Merge commit 'qt/master-stable' into 4.6-stable

Bring Qt 4.6 into the Qt-S60 repo.

Conflicts:
	configure.exe
	mkspecs/features/qttest_p4.prf
	qmake/generators/makefile.cpp
	src/corelib/io/qdir.cpp
	src/corelib/io/qprocess.h
	src/corelib/kernel/qcoreevent.h
	src/corelib/kernel/qobject.cpp
	src/corelib/kernel/qsharedmemory_unix.cpp
	src/corelib/thread/qthread_p.h
	src/corelib/tools/qvector.h
	src/gui/dialogs/qdialog.cpp
	src/gui/dialogs/qfiledialog.cpp
	src/gui/dialogs/qfiledialog_p.h
	src/gui/dialogs/qmessagebox.cpp
	src/gui/graphicsview/qgraphicsitem.cpp
	src/gui/graphicsview/qgraphicsview.cpp
	src/gui/image/qpixmapcache.cpp
	src/gui/kernel/qapplication.cpp
	src/gui/kernel/qapplication_p.h
	src/gui/kernel/qwidget.cpp
	src/gui/kernel/qwidget_p.h
	src/gui/painting/qdrawhelper.cpp
	src/gui/painting/qpaintengine_raster.cpp
	src/gui/text/qfontengine_qpf.cpp
	src/gui/widgets/qmenubar.cpp
	src/network/socket/qlocalserver.cpp
	src/testlib/qtestcase.cpp
	src/testlib/testlib.pro
	tests/auto/qimagereader/tst_qimagereader.cpp
	tests/auto/qitemdelegate/tst_qitemdelegate.cpp
	tests/auto/qnetworkreply/tst_qnetworkreply.cpp
	tests/auto/qpixmap/qpixmap.pro

39 files changed, 8131 insertions, 3351 deletions

diff --git a/src/opengl/gl2paintengineex/glgc_shader_source.h b/src/opengl/gl2paintengineex/glgc_shader_source.h
deleted file mode 100644
index 5b9d28b..0000000
--- a/src/opengl/gl2paintengineex/glgc_shader_source.h
+++ /dev/null
@@ -1,289 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Qt Software Information (qt-info@nokia.com)
-**
-** This file is part of the QtOpenGL module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the either Technology Preview License Agreement or the
-** Beta Release License Agreement.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain
-** additional rights. These rights are described in the Nokia Qt LGPL
-** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
-** package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
-**
-** If you are unsure which license is appropriate for your use, please
-** contact the sales department at qt-sales@nokia.com.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef GLGC_SHADER_SOURCE_H
-#define GLGC_SHADER_SOURCE_H
-
-QT_BEGIN_HEADER
-
-QT_BEGIN_NAMESPACE
-
-QT_MODULE(OpenGL)
-
-static const char* qglslImageVertexShader = "\
-    attribute highp vec4    inputVertex; \
-    attribute lowp  vec2    textureCoord; \
-    uniform   highp mat4    pmvMatrix; \
-    varying   lowp  vec2    fragTextureCoord; \
-    void main(void) \
-    {\
-            gl_Position = pmvMatrix * inputVertex;\
-            fragTextureCoord = textureCoord; \
-    }";
-
-static const char* qglslImageFragmentShader = "\
-    varying lowp vec2      fragTextureCoord;\
-    uniform      sampler2D textureSampler;\
-    uniform lowp float     opacity; \
-    void main(void) \
-    {\
-        gl_FragColor = texture2D(textureSampler, fragTextureCoord) * opacity; \
-    }";
-
-static const char* qglslTextFragmentShader = "\
-    varying lowp    vec2      fragTextureCoord;\
-    uniform mediump vec4      fragmentColor;\
-    uniform         sampler2D textureSampler;\
-    void main(void) \
-    {\
-        highp vec4 tex = texture2D(textureSampler, fragTextureCoord); \
-        tex = fragmentColor * tex.r; \
-        gl_FragColor = tex; \
-    }";
-
-static const char* qglslDefaultVertexShader = "\
-    attribute highp vec4    inputVertex;\
-    uniform   highp mat4    pmvMatrix;\
-    void main(void)\
-    {\
-            gl_Position = pmvMatrix * inputVertex;\
-    }";
-
-static const char* qglslSimpleFragmentShader = "\
-    void main (void)\
-    {\
-            gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);\
-    }";
-
-
-/**** FRAGMENT SHADER MAIN FUNCTIONS ****/
-// NOTE: Currently, the engine assumes brushes return colors already in pre-multiplied
-//       format. However, this may change if we add support for non-premultiplied 
-
-static const char* qglslNoOpacityFragmentShaderMain = "\n\
-    mediump vec4 brush();\
-    void main (void)\
-    {\
-            gl_FragColor = brush();\
-    }\n";
-
-static const char* qglslFragmentShaderMain = "\n\
-    mediump vec4    brush();\
-    uniform lowp    float   opacity; \
-    void main (void)\
-    {\
-        gl_FragColor = brush() * opacity;\
-    }\n";
-
-
-
-/**** BRUSH SHADERS ****/
-
-// This should never actually be used
-static const char* qglslNoBrushFragmentShader = "\n\
-    mediump vec4 brush() { \
-        discard; \
-        return vec4(1.0, 0.8, 0.8, 1.0);\
-    }\n";
-
-// Solid Fill Brush
-static const char* qglslSolidBrushFragmentShader = "\n\
-    uniform mediump vec4 fragmentColor; \
-    mediump vec4 brush() { \
-        return fragmentColor;\
-    }\n";
-
-// Texture Brush
-static const char* qglslTextureBrushVertexShader = "\
-    attribute highp   vec4  inputVertex; \
-    uniform   highp   mat4  pmvMatrix; \
-    uniform   mediump vec2  halfViewportSize; \
-    uniform   mediump vec2  invertedTextureSize; \
-    uniform   mediump mat3  brushTransform; \
-    varying   mediump vec2  texCoords; \
-    void main(void) { \
-            gl_Position = pmvMatrix * inputVertex;\
-            gl_Position.xy = gl_Position.xy / gl_Position.w; \
-            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
-            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-            gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
-            gl_Position.w = invertedHTexCoordsZ; \
-            texCoords.xy = (hTexCoords.xy * invertedTextureSize) * gl_Position.w; \
-            texCoords.y = -texCoords.y; \
-    }";
-
-static const char* qglslTextureBrushFragmentShader = "\n\
-    varying mediump vec2      texCoords;\
-    uniform         sampler2D brushTexture;\
-    mediump vec4 brush() { \
-        return texture2D(brushTexture, texCoords); \
-    }\n";
-
-
-// Pattern Brush - This assumes the texture size is 8x8 and thus, the inverted size is 0.125
-static const char* qglslPatternBrushVertexShader = "\
-    attribute highp   vec4  inputVertex; \
-    uniform   highp   mat4  pmvMatrix; \
-    uniform   mediump vec2  halfViewportSize; \
-    uniform   mediump vec2  invertedTextureSize; \
-    uniform   mediump mat3  brushTransform; \
-    varying   mediump vec2  texCoords; \
-    void main(void) { \
-            gl_Position = pmvMatrix * inputVertex;\
-            gl_Position.xy = gl_Position.xy / gl_Position.w; \
-            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
-            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-            gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
-            gl_Position.w = invertedHTexCoordsZ; \
-            texCoords.xy = (hTexCoords.xy * 0.125) * invertedHTexCoordsZ; \
-            texCoords.y = -texCoords.y; \
-    }";
-
-static const char* qglslPatternBrushFragmentShader = "\n\
-    uniform         sampler2D brushTexture;\
-    uniform lowp    vec4      patternColor; \
-    varying mediump vec2      texCoords;\
-    mediump vec4 brush() { \
-        return patternColor * texture2D(brushTexture, texCoords).r; \
-    }\n";
-
-
-// Linear Gradient Brush
-static const char* qglslLinearGradientBrushVertexShader = "\
-    attribute highp   vec4  inputVertex; \
-    uniform   highp   mat4  pmvMatrix; \
-    uniform   mediump vec2  halfViewportSize; \
-    uniform   highp   vec3  linearData; \
-    uniform   mediump mat3  brushTransform; \
-    varying   mediump float index ; \
-    void main() { \
-        gl_Position = pmvMatrix * inputVertex;\
-        gl_Position.xy = gl_Position.xy / gl_Position.w; \
-        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
-        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
-        gl_Position.w = invertedHTexCoordsZ; \
-        index = (dot(linearData.xy, hTexCoords.xy) * linearData.z) * invertedHTexCoordsZ; \
-    }";
-
-static const char* qglslLinearGradientBrushFragmentShader = "\n\
-    uniform         sampler2D   brushTexture; \
-    varying mediump float       index; \
-    mediump vec4 brush() { \
-        mediump vec2 val = vec2(index, 0.5); \
-        return texture2D(brushTexture, val); \
-    }\n";
-
-
-static const char* qglslRadialGradientBrushVertexShader = "\
-    attribute highp   vec4 inputVertex;\
-    uniform   highp   mat4 pmvMatrix;\
-    uniform   mediump vec2 halfViewportSize; \
-    uniform   highp   mat3 brushTransform; \
-    uniform   highp   vec2 fmp; \
-    varying   highp   float b; \
-    varying   highp   vec2  A; \
-    void main(void) \
-    {\
-        gl_Position = pmvMatrix * inputVertex;\
-        gl_Position.xy = gl_Position.xy / gl_Position.w; \
-        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
-        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
-        gl_Position.w = invertedHTexCoordsZ; \
-        A = hTexCoords.xy * invertedHTexCoordsZ; \
-        b = 2.0 * fmp * (A.x + A.y); \
-\
-    }";
-
-static const char* qglslRadialGradientBrushFragmentShader = "\n\
-    uniform         sampler2D   brushTexture; \
-    uniform highp   float       fmp2_m_radius2; \
-    uniform highp   float       inverse_2_fmp2_m_radius2; \
-    varying   highp   float b; \
-    varying   highp   vec2  A; \
-\
-    mediump vec4 brush() { \
-        highp float c = -dot(A, A); \
-        highp vec2 val = vec2((-b + sqrt(b*b - 4.0*fmp2_m_radius2*c)) * inverse_2_fmp2_m_radius2, 0.5); \
-        return texture2D(brushTexture, val); \
-    }\n";
-
-static const char* qglslConicalGradientBrushVertexShader = "\
-    attribute highp vec4    inputVertex;\
-    uniform   highp mat4    pmvMatrix;\
-    uniform   mediump vec2  halfViewportSize; \
-    uniform highp   mat3    brushTransform; \
-    varying highp   vec2    A; \
-    void main(void)\
-    {\
-        gl_Position = pmvMatrix * inputVertex;\
-        gl_Position.xy = gl_Position.xy / gl_Position.w; \
-        mediump vec2  viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
-        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
-        gl_Position.w = invertedHTexCoordsZ; \
-        A = hTexCoords.xy * invertedHTexCoordsZ; \
-    }";
-
-static const char* qglslConicalGradientBrushFragmentShader = "\n\
-    #define INVERSE_2PI 0.1591549430918953358 \n\
-    uniform         sampler2D   brushTexture; \
-    uniform mediump float       angle; \
-    varying highp   vec2        A; \
-    mediump vec4 brush() { \
-        if (abs(A.y) == abs(A.x)) \
-            A.y += 0.002; \
-        highp float t = (atan2(-A.y, A.x) + angle) * INVERSE_2PI; \
-        return texture2D(brushTexture, vec2(t - floor(t), 0.5)); \
-    }\n";
-
-
-QT_END_NAMESPACE
-
-QT_END_HEADER
-
-#endif // GLGC_SHADER_SOURCE_H
diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
index 0352d39..560ad3a 100644
--- a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
@@ -43,6 +43,8 @@
 
 #include <private/qbezier_p.h>
 
+QT_BEGIN_NAMESPACE
+
 void QGL2PEXVertexArray::clear()
 {
     vertexArray.reset();
@@ -59,6 +61,12 @@ QGLRect QGL2PEXVertexArray::boundingRect() const
         return QGLRect(minX, minY, maxX, maxY);
 }
 
+void QGL2PEXVertexArray::addRect(const QRectF &rect)
+{
+    vertexArray << rect.topLeft() << rect.topRight() << rect.bottomRight()
+                << rect.bottomRight() << rect.bottomLeft() << rect.topLeft();
+}
+
 void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseScale)
 {
     const QPointF* const points = reinterpret_cast<const QPointF*>(path.points());
@@ -154,3 +162,5 @@ void QGL2PEXVertexArray::curveToArray(const QGLPoint &cp1, const QGLPoint &cp2,
         }
     }
 }
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
index c205022..d7a9f73 100644
--- a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
@@ -50,19 +50,24 @@
 // We mean it.
 //
 
+#ifndef QGL2PEXVERTEXARRAY_P_H
+#define QGL2PEXVERTEXARRAY_P_H
+
 #include <QRectF>
 
 #include <private/qdatabuffer_p.h>
 #include <private/qvectorpath_p.h>
 #include <private/qgl_p.h>
 
+QT_BEGIN_NAMESPACE
+
 class QGLPoint
 {
 public:
     QGLPoint(GLfloat new_x, GLfloat new_y) :
         x(new_x), y(new_y) {};
 
-    QGLPoint(QPointF p) :
+    QGLPoint(const QPointF &p) :
         x(p.x()), y(p.y()) {};
 
     QGLPoint(const QPointF* p) :
@@ -77,7 +82,7 @@ public:
 
 struct QGLRect
 {
-    QGLRect(QRectF r)
+    QGLRect(const QRectF &r)
         :  left(r.left()), top(r.top()), right(r.right()), bottom(r.bottom()) {}
 
     QGLRect(GLfloat l, GLfloat t, GLfloat r, GLfloat b)
@@ -98,6 +103,7 @@ public:
         maxX(-2e10), maxY(-2e10), minX(2e10), minY(2e10),
         boundingRectDirty(true) {}
 
+    void addRect(const QRectF &rect);
     void addPath(const QVectorPath &path, GLfloat curveInverseScale);
     void clear();
 
@@ -119,3 +125,7 @@ private:
 
     inline void curveToArray(const QGLPoint &cp1, const QGLPoint &cp2, const QGLPoint &ep, GLfloat inverseScale);
 };
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
new file mode 100644
index 0000000..b71c4c1
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
@@ -0,0 +1,507 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qglengineshadermanager_p.h"
+#include "qglengineshadersource_p.h"
+
+#if defined(QT_DEBUG)
+#include <QMetaEnum>
+#endif
+
+
+QT_BEGIN_NAMESPACE
+
+const char* QGLEngineShaderManager::qglEngineShaderSourceCode[] = {
+    0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0
+};
+
+QGLEngineShaderManager::QGLEngineShaderManager(QGLContext* context)
+    : ctx(context),
+      shaderProgNeedsChanging(true),
+      srcPixelType(Qt::NoBrush),
+      useGlobalOpacity(false),
+      maskType(NoMask),
+      useTextureCoords(false),
+      compositionMode(QPainter::CompositionMode_SourceOver),
+      blitShaderProg(0),
+      simpleShaderProg(0),
+      currentShaderProg(0)
+{
+    memset(compiledShaders, 0, sizeof(compiledShaders));
+
+/*
+    Rather than having the shader source array statically initialised, it is initialised
+    here instead. This is to allow new shader names to be inserted or existing names moved
+    around without having to change the order of the glsl strings. It is hoped this will
+    make future hard-to-find runtime bugs more obvious and generally give more solid code.
+*/
+    static bool qglEngineShaderSourceCodePopulated = false;
+    if (!qglEngineShaderSourceCodePopulated) {
+
+        const char** code = qglEngineShaderSourceCode; // shortcut
+
+        code[MainVertexShader] = qglslMainVertexShader;
+        code[MainWithTexCoordsVertexShader] = qglslMainWithTexCoordsVertexShader;
+
+        code[UntransformedPositionVertexShader] = qglslUntransformedPositionVertexShader;
+        code[PositionOnlyVertexShader] = qglslPositionOnlyVertexShader;
+        code[PositionWithPatternBrushVertexShader] = qglslPositionWithPatternBrushVertexShader;
+        code[PositionWithLinearGradientBrushVertexShader] = qglslPositionWithLinearGradientBrushVertexShader;
+        code[PositionWithConicalGradientBrushVertexShader] = qglslPositionWithConicalGradientBrushVertexShader;
+        code[PositionWithRadialGradientBrushVertexShader] = qglslPositionWithRadialGradientBrushVertexShader;
+        code[PositionWithTextureBrushVertexShader] = qglslPositionWithTextureBrushVertexShader;
+        code[AffinePositionWithPatternBrushVertexShader] = qglslAffinePositionWithPatternBrushVertexShader;
+        code[AffinePositionWithLinearGradientBrushVertexShader] = qglslAffinePositionWithLinearGradientBrushVertexShader;
+        code[AffinePositionWithConicalGradientBrushVertexShader] = qglslAffinePositionWithConicalGradientBrushVertexShader;
+        code[AffinePositionWithRadialGradientBrushVertexShader] = qglslAffinePositionWithRadialGradientBrushVertexShader;
+        code[AffinePositionWithTextureBrushVertexShader] = qglslAffinePositionWithTextureBrushVertexShader;
+
+        code[MainFragmentShader_CMO] = qglslMainFragmentShader_CMO;
+        code[MainFragmentShader_CM] = qglslMainFragmentShader_CM;
+        code[MainFragmentShader_MO] = qglslMainFragmentShader_MO;
+        code[MainFragmentShader_M] = qglslMainFragmentShader_M;
+        code[MainFragmentShader_CO] = qglslMainFragmentShader_CO;
+        code[MainFragmentShader_C] = qglslMainFragmentShader_C;
+        code[MainFragmentShader_O] = qglslMainFragmentShader_O;
+        code[MainFragmentShader] = qglslMainFragmentShader;
+
+        code[ImageSrcFragmentShader] = qglslImageSrcFragmentShader;
+        code[ImageSrcWithPatternFragmentShader] = qglslImageSrcWithPatternFragmentShader;
+        code[NonPremultipliedImageSrcFragmentShader] = qglslNonPremultipliedImageSrcFragmentShader;
+        code[SolidBrushSrcFragmentShader] = qglslSolidBrushSrcFragmentShader;
+        code[TextureBrushSrcFragmentShader] = qglslTextureBrushSrcFragmentShader;
+        code[TextureBrushSrcWithPatternFragmentShader] = qglslTextureBrushSrcWithPatternFragmentShader;
+        code[PatternBrushSrcFragmentShader] = qglslPatternBrushSrcFragmentShader;
+        code[LinearGradientBrushSrcFragmentShader] = qglslLinearGradientBrushSrcFragmentShader;
+        code[RadialGradientBrushSrcFragmentShader] = qglslRadialGradientBrushSrcFragmentShader;
+        code[ConicalGradientBrushSrcFragmentShader] = qglslConicalGradientBrushSrcFragmentShader;
+        code[ShockingPinkSrcFragmentShader] = qglslShockingPinkSrcFragmentShader;
+
+        code[MaskFragmentShader] = qglslMaskFragmentShader;
+        code[RgbMaskFragmentShader] = ""; //###
+        code[RgbMaskWithGammaFragmentShader] = ""; //###
+
+        code[MultiplyCompositionModeFragmentShader] = ""; //###
+        code[ScreenCompositionModeFragmentShader] = ""; //###
+        code[OverlayCompositionModeFragmentShader] = ""; //###
+        code[DarkenCompositionModeFragmentShader] = ""; //###
+        code[LightenCompositionModeFragmentShader] = ""; //###
+        code[ColorDodgeCompositionModeFragmentShader] = ""; //###
+        code[ColorBurnCompositionModeFragmentShader] = ""; //###
+        code[HardLightCompositionModeFragmentShader] = ""; //###
+        code[SoftLightCompositionModeFragmentShader] = ""; //###
+        code[DifferenceCompositionModeFragmentShader] = ""; //###
+        code[ExclusionCompositionModeFragmentShader] = ""; //###
+
+#if defined(QT_DEBUG)
+        // Check that all the elements have been filled:
+        for (int i = 0; i < TotalShaderCount; ++i) {
+            if (qglEngineShaderSourceCode[i] == 0) {
+                int enumIndex = staticMetaObject.indexOfEnumerator("ShaderName");
+                QMetaEnum m = staticMetaObject.enumerator(enumIndex);
+
+                qCritical() << "qglEngineShaderSourceCode: Source for" << m.valueToKey(i)
+                            << "(shader" << i << ") missing!";
+            }
+        }
+#endif
+        qglEngineShaderSourceCodePopulated = true;
+    }
+
+    // Compile up the simple shader:
+    simpleShaderProg = new QGLShaderProgram(ctx, this);
+    compileNamedShader(MainVertexShader,              QGLShader::PartialVertexShader);
+    compileNamedShader(PositionOnlyVertexShader,      QGLShader::PartialVertexShader);
+    compileNamedShader(MainFragmentShader,            QGLShader::PartialFragmentShader);
+    compileNamedShader(ShockingPinkSrcFragmentShader, QGLShader::PartialFragmentShader);
+    simpleShaderProg->addShader(compiledShaders[MainVertexShader]);
+    simpleShaderProg->addShader(compiledShaders[PositionOnlyVertexShader]);
+    simpleShaderProg->addShader(compiledShaders[MainFragmentShader]);
+    simpleShaderProg->addShader(compiledShaders[ShockingPinkSrcFragmentShader]);
+    simpleShaderProg->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);
+    simpleShaderProg->link();
+    if (!simpleShaderProg->isLinked()) {
+        qCritical() << "Errors linking simple shader:"
+                    << simpleShaderProg->log();
+    }
+
+    // Compile the blit shader:
+    blitShaderProg = new QGLShaderProgram(ctx, this);
+    compileNamedShader(MainWithTexCoordsVertexShader,     QGLShader::PartialVertexShader);
+    compileNamedShader(UntransformedPositionVertexShader, QGLShader::PartialVertexShader);
+    compileNamedShader(MainFragmentShader,                QGLShader::PartialFragmentShader);
+    compileNamedShader(ImageSrcFragmentShader,            QGLShader::PartialFragmentShader);
+    blitShaderProg->addShader(compiledShaders[MainWithTexCoordsVertexShader]);
+    blitShaderProg->addShader(compiledShaders[UntransformedPositionVertexShader]);
+    blitShaderProg->addShader(compiledShaders[MainFragmentShader]);
+    blitShaderProg->addShader(compiledShaders[ImageSrcFragmentShader]);
+    blitShaderProg->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);
+    blitShaderProg->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);
+    blitShaderProg->link();
+    if (!blitShaderProg->isLinked()) {
+        qCritical() << "Errors linking blit shader:"
+                    << blitShaderProg->log();
+    }
+}
+
+QGLEngineShaderManager::~QGLEngineShaderManager()
+{
+    //###
+}
+
+
+
+
+
+void QGLEngineShaderManager::optimiseForBrushTransform(const QTransform &transform)
+{
+    Q_UNUSED(transform); // Currently ignored
+}
+
+void QGLEngineShaderManager::setDirty()
+{
+    shaderProgNeedsChanging = true;
+}
+
+void QGLEngineShaderManager::setSrcPixelType(Qt::BrushStyle style)
+{
+    srcPixelType = style;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setSrcPixelType(PixelSrcType type)
+{
+    srcPixelType = type;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setTextureCoordsEnabled(bool enabled)
+{
+    useTextureCoords = enabled;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setUseGlobalOpacity(bool useOpacity)
+{
+    useGlobalOpacity = useOpacity;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setMaskType(MaskType type)
+{
+    maskType = type;
+    shaderProgNeedsChanging = true; //###
+}
+
+void QGLEngineShaderManager::setCompositionMode(QPainter::CompositionMode mode)
+{
+    compositionMode = mode;
+    shaderProgNeedsChanging = true; //###
+}
+
+QGLShaderProgram* QGLEngineShaderManager::currentProgram()
+{
+    return currentShaderProg;
+}
+
+QGLShaderProgram* QGLEngineShaderManager::simpleProgram()
+{
+    return simpleShaderProg;
+}
+
+QGLShaderProgram* QGLEngineShaderManager::blitProgram()
+{
+    return blitShaderProg;
+}
+
+
+
+// Select & use the correct shader program using the current state.
+// Returns true if program needed changing.
+bool QGLEngineShaderManager::useCorrectShaderProg()
+{
+    if (!shaderProgNeedsChanging)
+        return false;
+
+    QGLEngineShaderProg requiredProgram;
+    requiredProgram.program = 0;
+
+    // Choose vertex shader main function
+    QGLEngineShaderManager::ShaderName mainVertexShaderName = InvalidShaderName;
+    if (useTextureCoords)
+        mainVertexShaderName = MainWithTexCoordsVertexShader;
+    else
+        mainVertexShaderName = MainVertexShader;
+    compileNamedShader(mainVertexShaderName, QGLShader::PartialVertexShader);
+    requiredProgram.mainVertexShader = compiledShaders[mainVertexShaderName];
+
+    // Choose vertex shader shader position function (which typically also sets
+    // varyings) and the source pixel (srcPixel) fragment shader function:
+    QGLEngineShaderManager::ShaderName positionVertexShaderName = InvalidShaderName;
+    QGLEngineShaderManager::ShaderName srcPixelFragShaderName = InvalidShaderName;
+    bool isAffine = brushTransform.isAffine();
+    if ( (srcPixelType >= Qt::Dense1Pattern) && (srcPixelType <= Qt::DiagCrossPattern) ) {
+        if (isAffine)
+            positionVertexShaderName = AffinePositionWithPatternBrushVertexShader;
+        else
+            positionVertexShaderName = PositionWithPatternBrushVertexShader;
+
+        srcPixelFragShaderName = PatternBrushSrcFragmentShader;
+    }
+    else switch (srcPixelType) {
+        default:
+        case Qt::NoBrush:
+            qCritical("QGLEngineShaderManager::useCorrectShaderProg() - I'm scared, Qt::NoBrush style is set");
+            break;
+        case QGLEngineShaderManager::ImageSrc:
+            srcPixelFragShaderName = ImageSrcFragmentShader;
+            positionVertexShaderName = PositionOnlyVertexShader;
+            break;
+        case QGLEngineShaderManager::PatternSrc:
+            srcPixelFragShaderName = ImageSrcWithPatternFragmentShader;
+            positionVertexShaderName = PositionOnlyVertexShader;
+            break;
+        case QGLEngineShaderManager::TextureSrcWithPattern:
+            srcPixelFragShaderName = TextureBrushSrcWithPatternFragmentShader;
+            positionVertexShaderName = isAffine ? AffinePositionWithTextureBrushVertexShader
+                                                : PositionWithTextureBrushVertexShader;
+            break;
+        case QGLEngineShaderManager::NonPremultipliedImageSrc:
+            srcPixelFragShaderName = NonPremultipliedImageSrcFragmentShader;
+            positionVertexShaderName = PositionOnlyVertexShader;
+            break;
+        case Qt::SolidPattern:
+            srcPixelFragShaderName = SolidBrushSrcFragmentShader;
+            positionVertexShaderName = PositionOnlyVertexShader;
+            break;
+        case Qt::LinearGradientPattern:
+            srcPixelFragShaderName = LinearGradientBrushSrcFragmentShader;
+            positionVertexShaderName = isAffine ? AffinePositionWithLinearGradientBrushVertexShader
+                                                : PositionWithLinearGradientBrushVertexShader;
+            break;
+        case Qt::ConicalGradientPattern:
+            srcPixelFragShaderName = ConicalGradientBrushSrcFragmentShader;
+            positionVertexShaderName = isAffine ? AffinePositionWithConicalGradientBrushVertexShader
+                                                : PositionWithConicalGradientBrushVertexShader;
+            break;
+        case Qt::RadialGradientPattern:
+            srcPixelFragShaderName = RadialGradientBrushSrcFragmentShader;
+            positionVertexShaderName = isAffine ? AffinePositionWithRadialGradientBrushVertexShader
+                                                : PositionWithRadialGradientBrushVertexShader;
+            break;
+        case Qt::TexturePattern:
+            srcPixelFragShaderName = TextureBrushSrcFragmentShader;
+            positionVertexShaderName = isAffine ? AffinePositionWithTextureBrushVertexShader
+                                                : PositionWithTextureBrushVertexShader;
+            break;
+    };
+    compileNamedShader(positionVertexShaderName, QGLShader::PartialVertexShader);
+    compileNamedShader(srcPixelFragShaderName, QGLShader::PartialFragmentShader);
+    requiredProgram.positionVertexShader = compiledShaders[positionVertexShaderName];
+    requiredProgram.srcPixelFragShader = compiledShaders[srcPixelFragShaderName];
+
+
+    const bool hasCompose = compositionMode > QPainter::CompositionMode_Plus;
+    const bool hasMask = maskType != QGLEngineShaderManager::NoMask;
+
+    // Choose fragment shader main function:
+    QGLEngineShaderManager::ShaderName mainFragShaderName;
+
+    if (hasCompose && hasMask && useGlobalOpacity)
+        mainFragShaderName = MainFragmentShader_CMO;
+    if (hasCompose && hasMask && !useGlobalOpacity)
+        mainFragShaderName = MainFragmentShader_CM;
+    if (!hasCompose && hasMask && useGlobalOpacity)
+        mainFragShaderName = MainFragmentShader_MO;
+    if (!hasCompose && hasMask && !useGlobalOpacity)
+        mainFragShaderName = MainFragmentShader_M;
+    if (hasCompose && !hasMask && useGlobalOpacity)
+        mainFragShaderName = MainFragmentShader_CO;
+    if (hasCompose && !hasMask && !useGlobalOpacity)
+        mainFragShaderName = MainFragmentShader_C;
+    if (!hasCompose && !hasMask && useGlobalOpacity)
+        mainFragShaderName = MainFragmentShader_O;
+    if (!hasCompose && !hasMask && !useGlobalOpacity)
+        mainFragShaderName = MainFragmentShader;
+
+    compileNamedShader(mainFragShaderName, QGLShader::PartialFragmentShader);
+    requiredProgram.mainFragShader = compiledShaders[mainFragShaderName];
+
+    if (hasMask) {
+        QGLEngineShaderManager::ShaderName maskShaderName = QGLEngineShaderManager::InvalidShaderName;
+        if (maskType == PixelMask)
+            maskShaderName = MaskFragmentShader;
+        else if (maskType == SubPixelMask)
+            maskShaderName = RgbMaskFragmentShader;
+        else if (maskType == SubPixelWithGammaMask)
+            maskShaderName = RgbMaskWithGammaFragmentShader;
+        else
+            qCritical("QGLEngineShaderManager::useCorrectShaderProg() - Unknown mask type");
+
+        compileNamedShader(maskShaderName, QGLShader::PartialFragmentShader);
+        requiredProgram.maskFragShader = compiledShaders[maskShaderName];
+    }
+    else
+        requiredProgram.maskFragShader = 0;
+
+    if (hasCompose) {
+        QGLEngineShaderManager::ShaderName compositionShaderName = QGLEngineShaderManager::InvalidShaderName;
+        switch (compositionMode) {
+            case QPainter::CompositionMode_Multiply:
+                compositionShaderName = MultiplyCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Screen:
+                compositionShaderName = ScreenCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Overlay:
+                compositionShaderName = OverlayCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Darken:
+                compositionShaderName = DarkenCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Lighten:
+                compositionShaderName = LightenCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_ColorDodge:
+                compositionShaderName = ColorDodgeCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_ColorBurn:
+                compositionShaderName = ColorBurnCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_HardLight:
+                compositionShaderName = HardLightCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_SoftLight:
+                compositionShaderName = SoftLightCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Difference:
+                compositionShaderName = DifferenceCompositionModeFragmentShader;
+                break;
+            case QPainter::CompositionMode_Exclusion:
+                compositionShaderName = ExclusionCompositionModeFragmentShader;
+                break;
+            default:
+                qWarning("QGLEngineShaderManager::useCorrectShaderProg() - Unsupported composition mode");
+        }
+        compileNamedShader(compositionShaderName, QGLShader::PartialFragmentShader);
+        requiredProgram.compositionFragShader = compiledShaders[compositionShaderName];
+    }
+    else
+        requiredProgram.compositionFragShader = 0;
+
+
+    // At this point, requiredProgram is fully populated so try to find the program in the cache
+    foreach (const QGLEngineShaderProg &prog, cachedPrograms) {
+        if (    (prog.mainVertexShader == requiredProgram.mainVertexShader)
+             && (prog.positionVertexShader == requiredProgram.positionVertexShader)
+             && (prog.mainFragShader == requiredProgram.mainFragShader)
+             && (prog.srcPixelFragShader == requiredProgram.srcPixelFragShader)
+             && (prog.compositionFragShader == requiredProgram.compositionFragShader) )
+        {
+            currentShaderProg = prog.program;
+            currentShaderProg->enable();
+            shaderProgNeedsChanging = false;
+            return true;
+        }
+    }
+
+    // Shader program not found in cache, create it now.
+    requiredProgram.program = new QGLShaderProgram(ctx, this);
+    requiredProgram.program->addShader(requiredProgram.mainVertexShader);
+    requiredProgram.program->addShader(requiredProgram.positionVertexShader);
+    requiredProgram.program->addShader(requiredProgram.mainFragShader);
+    requiredProgram.program->addShader(requiredProgram.srcPixelFragShader);
+    requiredProgram.program->addShader(requiredProgram.maskFragShader);
+    requiredProgram.program->addShader(requiredProgram.compositionFragShader);
+
+    // We have to bind the vertex attribute names before the program is linked:
+    requiredProgram.program->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);
+    if (useTextureCoords)
+        requiredProgram.program->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);
+
+    requiredProgram.program->link();
+    if (!requiredProgram.program->isLinked()) {
+        QString error;
+        qWarning() <<  "Shader program failed to link,"
+#if defined(QT_DEBUG)
+              << '\n'
+              << "  Shaders Used:" << '\n'
+              << "    mainVertexShader = "     << requiredProgram.mainVertexShader->objectName()  << '\n'
+              << "    positionVertexShader = " << requiredProgram.positionVertexShader->objectName() << '\n'
+              << "    mainFragShader = "       << requiredProgram.mainFragShader->objectName() << '\n'
+              << "    srcPixelFragShader = "   << requiredProgram.srcPixelFragShader->objectName() << '\n'
+              << "    maskFragShader = "       << requiredProgram.maskFragShader->objectName() << '\n'
+              << "    compositionFragShader = "<< requiredProgram.compositionFragShader->objectName() << '\n'
+#endif
+              << "  Error Log:" << '\n'
+              << "    " << requiredProgram.program->log();
+        qWarning() << error;
+    }
+    else {
+        cachedPrograms.append(requiredProgram);
+        currentShaderProg = requiredProgram.program;
+        currentShaderProg->enable();
+    }
+    shaderProgNeedsChanging = false;
+    return true;
+}
+
+void QGLEngineShaderManager::compileNamedShader(QGLEngineShaderManager::ShaderName name, QGLShader::ShaderType type)
+{
+    if (compiledShaders[name])
+        return;
+
+    QGLShader *newShader = new QGLShader(type, ctx, this);
+    newShader->compile(qglEngineShaderSourceCode[name]);
+
+#if defined(QT_DEBUG)
+    // Name the shader for easier debugging
+    QMetaEnum m = staticMetaObject.enumerator(staticMetaObject.indexOfEnumerator("ShaderName"));
+    newShader->setObjectName(QLatin1String(m.valueToKey(name)));
+#endif
+
+    compiledShaders[name] = newShader;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
new file mode 100644
index 0000000..4a55eca
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
@@ -0,0 +1,395 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+/*
+    VERTEX SHADERS
+    ==============
+
+    Vertex shaders are specified as multiple (partial) shaders. On desktop,
+    this works fine. On ES, QGLShader & QGLShaderProgram will make partial
+    shaders work by concatenating the source in each QGLShader and compiling
+    it as a single shader. This is abstracted nicely by QGLShaderProgram and
+    the GL2 engine doesn't need to worry about it.
+
+    Generally, there's two vertex shader objects. The position shaders are
+    the ones which set gl_Position. There's also two "main" vertex shaders,
+    one which just calls the position shader and another which also passes
+    through some texture coordinates from a vertex attribute array to a
+    varying. These texture coordinates are used for mask position in text
+    rendering and for the source coordinates in drawImage/drawPixmap. There's
+    also a "Simple" vertex shader for rendering a solid colour (used to render
+    into the stencil buffer where the actual colour value is discarded).
+
+    The position shaders for brushes look scary. This is because many of the
+    calculations which logically belong in the fragment shader have been moved
+    into the vertex shader to improve performance. This is why the position
+    calculation is in a seperate shader. Not only does it calculate the
+    position, but it also calculates some data to be passed to the fragment
+    shader as a varying. It is optimal to move as much of the calculation as
+    possible into the vertex shader as this is executed less often.
+
+    The varyings passed to the fragment shaders are interpolated (which is
+    cheap). Unfortunately, GL will apply perspective correction to the
+    interpolation calusing errors. To get around this, the vertex shader must
+    apply perspective correction itself and set the w-value of gl_Position to
+    zero. That way, GL will be tricked into thinking it doesn't need to apply a
+    perspective correction and use linear interpolation instead (which is what
+    we want). Of course, if the brush transform is affeine, no perspective
+    correction is needed and a simpler vertex shader can be used instead.
+
+    So there are the following "main" vertex shaders:
+        qglslMainVertexShader
+        qglslMainWithTexCoordsVertexShader
+
+    And the the following position vertex shaders:
+        qglslPositionOnlyVertexShader
+        qglslPositionWithTextureBrushVertexShader
+        qglslPositionWithPatternBrushVertexShader
+        qglslPositionWithLinearGradientBrushVertexShader
+        qglslPositionWithRadialGradientBrushVertexShader
+        qglslPositionWithConicalGradientBrushVertexShader
+        qglslAffinePositionWithTextureBrushVertexShader
+        qglslAffinePositionWithPatternBrushVertexShader
+        qglslAffinePositionWithLinearGradientBrushVertexShader
+        qglslAffinePositionWithRadialGradientBrushVertexShader
+        qglslAffinePositionWithConicalGradientBrushVertexShader
+
+    Leading to 23 possible vertex shaders
+
+
+    FRAGMENT SHADERS
+    ================
+
+    Fragment shaders are also specified as multiple (partial) shaders. The
+    different fragment shaders represent the different stages in Qt's fragment
+    pipeline. There are 1-3 stages in this pipeline: First stage is to get the
+    fragment's colour value. The next stage is to get the fragment's mask value
+    (coverage value for anti-aliasing) and the final stage is to blend the
+    incoming fragment with the background (for composition modes not supported
+    by GL).
+
+    Of these, the first stage will always be present. If Qt doesn't need to
+    apply anti-aliasing (because it's off or handled by multisampling) then
+    the coverage value doesn't need to be applied. (Note: There are two types
+    of mask, one for regular anti-aliasing and one for sub-pixel anti-
+    aliasing.) If the composition mode is one which GL supports natively then
+    the blending stage doesn't need to be applied.
+
+    As eash stage can have multiple implementations, they are abstracted as
+    GLSL function calls with the following signatures:
+
+    Brushes & image drawing are implementations of "qcolorp vec4 srcPixel()":
+        qglslImageSrcFragShader
+        qglslImageSrcWithPatternFragShader
+        qglslNonPremultipliedImageSrcFragShader
+        qglslSolidBrushSrcFragShader
+        qglslTextureBrushSrcFragShader
+        qglslTextureBrushWithPatternFragShader
+        qglslPatternBrushSrcFragShader
+        qglslLinearGradientBrushSrcFragShader
+        qglslRadialGradientBrushSrcFragShader
+        qglslConicalGradientBrushSrcFragShader
+    NOTE: It is assumed the colour returned by srcPixel() is pre-multiplied
+
+    Masks are implementations of "qcolorp vec4 applyMask(qcolorp vec4 src)":
+        qglslMaskFragmentShader
+        qglslRgbMaskFragmentShader
+        qglslRgbMaskWithGammaFragmentShader
+
+    Composition modes are "qcolorp vec4 compose(qcolorp vec4 src)":
+        qglslColorBurnCompositionModeFragmentShader
+        qglslColorDodgeCompositionModeFragmentShader
+        qglslDarkenCompositionModeFragmentShader
+        qglslDifferenceCompositionModeFragmentShader
+        qglslExclusionCompositionModeFragmentShader
+        qglslHardLightCompositionModeFragmentShader
+        qglslLightenCompositionModeFragmentShader
+        qglslMultiplyCompositionModeFragmentShader
+        qglslOverlayCompositionModeFragmentShader
+        qglslScreenCompositionModeFragmentShader
+        qglslSoftLightCompositionModeFragmentShader
+
+
+    Note: In the future, some GLSL compilers will support an extension allowing
+          a new 'color' precision specifier. To support this, qcolorp is used for
+          all color components so it can be defined to colorp or lowp depending upon
+          the implementation.
+
+    So there are differnt frament shader main functions, depending on the
+    number & type of pipelines the fragment needs to go through.
+
+    The choice of which main() fragment shader string to use depends on:
+        - Use of global opacity
+        - Brush style (some brushes apply opacity themselves)
+        - Use & type of mask (TODO: Need to support high quality anti-aliasing & text)
+        - Use of non-GL Composition mode
+
+    Leading to the following fragment shader main functions:
+        gl_FragColor = compose(applyMask(srcPixel()*globalOpacity));
+        gl_FragColor = compose(applyMask(srcPixel()));
+        gl_FragColor = applyMask(srcPixel()*globalOpacity);
+        gl_FragColor = applyMask(srcPixel());
+        gl_FragColor = compose(srcPixel()*globalOpacity);
+        gl_FragColor = compose(srcPixel());
+        gl_FragColor = srcPixel()*globalOpacity;
+        gl_FragColor = srcPixel();
+
+    Called:
+        qglslMainFragmentShader_CMO
+        qglslMainFragmentShader_CM
+        qglslMainFragmentShader_MO
+        qglslMainFragmentShader_M
+        qglslMainFragmentShader_CO
+        qglslMainFragmentShader_C
+        qglslMainFragmentShader_O
+        qglslMainFragmentShader
+
+    Where:
+        M = Mask
+        C = Composition
+        O = Global Opacity
+
+
+    CUSTOM SHADER CODE (idea, depricated)
+    ==================
+
+    The use of custom shader code is supported by the engine for drawImage and
+    drawPixmap calls. This is implemented via hooks in the fragment pipeline.
+    The custom shader is passed to the engine as a partial fragment shader
+    (QGLCustomizedShader). The shader will implement a pre-defined method name
+    which Qt's fragment pipeline will call. There are two different hooks which
+    can be implemented as custom shader code:
+
+        mediump vec4 customShader(sampler2d src, vec2 srcCoords)
+        mediump vec4 customShaderWithDest(sampler2d dest, sampler2d src, vec2 srcCoords)
+
+*/
+
+#ifndef QGLENGINE_SHADER_MANAGER_H
+#define QGLENGINE_SHADER_MANAGER_H
+
+#include <QGLShader>
+#include <QGLShaderProgram>
+#include <QPainter>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+
+struct QGLEngineShaderProg
+{
+    QGLShader*          mainVertexShader;
+    QGLShader*          positionVertexShader;
+    QGLShader*          mainFragShader;
+    QGLShader*          srcPixelFragShader;
+    QGLShader*          maskFragShader;        // Can be null for no mask
+    QGLShader*          compositionFragShader; // Can be null for GL-handled mode
+    QGLShaderProgram*   program;
+};
+
+/*
+struct QGLEngineCachedShaderProg
+{
+    QGLEngineCachedShaderProg(QGLEngineShaderManager::ShaderName vertexMain,
+                              QGLEngineShaderManager::ShaderName vertexPosition,
+                              QGLEngineShaderManager::ShaderName fragMain,
+                              QGLEngineShaderManager::ShaderName pixelSrc,
+                              QGLEngineShaderManager::ShaderName mask,
+                              QGLEngineShaderManager::ShaderName composition);
+
+    int cacheKey;
+    QGLShaderProgram* program;
+}
+*/
+
+static const GLuint QT_VERTEX_COORDS_ATTR  = 0;
+static const GLuint QT_TEXTURE_COORDS_ATTR = 1;
+
+class QGLEngineShaderManager : public QObject
+{
+    Q_OBJECT
+public:
+    QGLEngineShaderManager(QGLContext* context);
+    ~QGLEngineShaderManager();
+
+    enum MaskType {NoMask, PixelMask, SubPixelMask, SubPixelWithGammaMask};
+    enum PixelSrcType {
+        ImageSrc = Qt::TexturePattern+1,
+        NonPremultipliedImageSrc = Qt::TexturePattern+2,
+        PatternSrc = Qt::TexturePattern+3,
+        TextureSrcWithPattern = Qt::TexturePattern+4
+    };
+
+    // There are optimisations we can do, depending on the brush transform:
+    //    1) May not have to apply perspective-correction
+    //    2) Can use lower precision for matrix
+    void optimiseForBrushTransform(const QTransform &transform);
+    void setSrcPixelType(Qt::BrushStyle);
+    void setSrcPixelType(PixelSrcType); // For non-brush sources, like pixmaps & images
+    void setTextureCoordsEnabled(bool); // For images & text glyphs
+    void setUseGlobalOpacity(bool);
+    void setMaskType(MaskType);
+    void setCompositionMode(QPainter::CompositionMode);
+
+    void setDirty(); // someone has manually changed the current shader program
+    bool useCorrectShaderProg(); // returns true if the shader program needed to be changed
+
+    QGLShaderProgram* currentProgram(); // Returns pointer to the shader the manager has chosen
+    QGLShaderProgram* simpleProgram(); // Used to draw into e.g. stencil buffers
+    QGLShaderProgram* blitProgram(); // Used to blit a texture into the framebuffer
+
+    enum ShaderName {
+        MainVertexShader,
+        MainWithTexCoordsVertexShader,
+
+        UntransformedPositionVertexShader,
+        PositionOnlyVertexShader,
+        PositionWithPatternBrushVertexShader,
+        PositionWithLinearGradientBrushVertexShader,
+        PositionWithConicalGradientBrushVertexShader,
+        PositionWithRadialGradientBrushVertexShader,
+        PositionWithTextureBrushVertexShader,
+        AffinePositionWithPatternBrushVertexShader,
+        AffinePositionWithLinearGradientBrushVertexShader,
+        AffinePositionWithConicalGradientBrushVertexShader,
+        AffinePositionWithRadialGradientBrushVertexShader,
+        AffinePositionWithTextureBrushVertexShader,
+
+        MainFragmentShader_CMO,
+        MainFragmentShader_CM,
+        MainFragmentShader_MO,
+        MainFragmentShader_M,
+        MainFragmentShader_CO,
+        MainFragmentShader_C,
+        MainFragmentShader_O,
+        MainFragmentShader,
+
+        ImageSrcFragmentShader,
+        ImageSrcWithPatternFragmentShader,
+        NonPremultipliedImageSrcFragmentShader,
+        SolidBrushSrcFragmentShader,
+        TextureBrushSrcFragmentShader,
+        TextureBrushSrcWithPatternFragmentShader,
+        PatternBrushSrcFragmentShader,
+        LinearGradientBrushSrcFragmentShader,
+        RadialGradientBrushSrcFragmentShader,
+        ConicalGradientBrushSrcFragmentShader,
+        ShockingPinkSrcFragmentShader,
+
+        MaskFragmentShader,
+        RgbMaskFragmentShader,
+        RgbMaskWithGammaFragmentShader,
+
+        MultiplyCompositionModeFragmentShader,
+        ScreenCompositionModeFragmentShader,
+        OverlayCompositionModeFragmentShader,
+        DarkenCompositionModeFragmentShader,
+        LightenCompositionModeFragmentShader,
+        ColorDodgeCompositionModeFragmentShader,
+        ColorBurnCompositionModeFragmentShader,
+        HardLightCompositionModeFragmentShader,
+        SoftLightCompositionModeFragmentShader,
+        DifferenceCompositionModeFragmentShader,
+        ExclusionCompositionModeFragmentShader,
+
+        TotalShaderCount, InvalidShaderName
+    };
+
+/*
+    // These allow the ShaderName enum to be used as a cache key
+    const int mainVertexOffset = 0;
+    const int positionVertexOffset = (1<<2) - PositionOnlyVertexShader;
+    const int mainFragOffset = (1<<6) - MainFragmentShader_CMO;
+    const int srcPixelOffset = (1<<10) - ImageSrcFragmentShader;
+    const int maskOffset = (1<<14) - NoMaskShader;
+    const int compositionOffset = (1 << 16) - MultiplyCompositionModeFragmentShader;
+*/
+
+#if defined (QT_DEBUG)
+    Q_ENUMS(ShaderName)
+#endif
+
+
+private:
+    QGLContext*     ctx;
+    bool            shaderProgNeedsChanging;
+
+    // Current state variables which influence the choice of shader:
+    QTransform                  brushTransform;
+    int                         srcPixelType;
+    bool                        useGlobalOpacity;
+    MaskType                    maskType;
+    bool                        useTextureCoords;
+    QPainter::CompositionMode   compositionMode;
+
+    QGLShaderProgram*   blitShaderProg;
+    QGLShaderProgram*   simpleShaderProg;
+    QGLShaderProgram*   currentShaderProg;
+
+    // TODO: Possibly convert to a LUT
+    QList<QGLEngineShaderProg> cachedPrograms;
+
+    QGLShader* compiledShaders[TotalShaderCount];
+
+    void compileNamedShader(QGLEngineShaderManager::ShaderName name, QGLShader::ShaderType type);
+
+    static const char* qglEngineShaderSourceCode[TotalShaderCount];
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif //QGLENGINE_SHADER_MANAGER_H
diff --git a/src/opengl/gl2paintengineex/qglengineshadersource_p.h b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
new file mode 100644
index 0000000..61cc63e
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
@@ -0,0 +1,417 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QGL_ENGINE_SHADER_SOURCE_H
+#define QGL_ENGINE_SHADER_SOURCE_H
+
+#include "qglengineshadermanager_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+
+static const char* const qglslMainVertexShader = "\
+    void setPosition();\
+    void main(void)\
+    {\
+            setPosition();\
+    }";
+
+static const char* const qglslMainWithTexCoordsVertexShader = "\
+    attribute lowp  vec2    textureCoordArray; \
+    varying   lowp  vec2    textureCoords; \
+    void setPosition();\
+    void main(void) \
+    {\
+            setPosition();\
+            textureCoords = textureCoordArray; \
+    }";
+
+
+static const char* const qglslPositionOnlyVertexShader = "\
+    attribute highp vec4    vertexCoordsArray;\
+    uniform   highp mat4    pmvMatrix;\
+    uniform   highp float   depth;\
+    void setPosition(void)\
+    {\
+            gl_Position = pmvMatrix * vertexCoordsArray;\
+            gl_Position.z = depth;\
+    }";
+
+static const char* const qglslUntransformedPositionVertexShader = "\
+    attribute highp vec4    vertexCoordsArray;\
+    uniform   highp float   depth;\
+    void setPosition(void)\
+    {\
+            gl_Position = vertexCoordsArray;\
+            gl_Position.z = depth;\
+    }";
+
+// Pattern Brush - This assumes the texture size is 8x8 and thus, the inverted size is 0.125
+static const char* const qglslPositionWithPatternBrushVertexShader = "\
+    attribute highp   vec4  vertexCoordsArray; \
+    uniform   highp   mat4  pmvMatrix; \
+    uniform   mediump vec2  halfViewportSize; \
+    uniform   mediump vec2  invertedTextureSize; \
+    uniform   mediump mat3  brushTransform; \
+    varying   mediump vec2  patternTexCoords; \
+    uniform   highp   float depth;\
+    void setPosition(void) { \
+            gl_Position = pmvMatrix * vertexCoordsArray;\
+            gl_Position.xy = gl_Position.xy / gl_Position.w; \
+            gl_Position.z = depth;\
+            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+            gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+            gl_Position.w = invertedHTexCoordsZ; \
+            patternTexCoords.xy = (hTexCoords.xy * 0.125) * invertedHTexCoordsZ; \
+            patternTexCoords.y = -patternTexCoords.y; \
+    }";
+
+static const char* const qglslAffinePositionWithPatternBrushVertexShader
+                 = qglslPositionWithPatternBrushVertexShader;
+
+static const char* const qglslPatternBrushSrcFragmentShader = "\
+    uniform         sampler2D brushTexture;\
+    uniform lowp    vec4      patternColor; \
+    varying mediump vec2      patternTexCoords;\
+    lowp vec4 srcPixel() { \
+        return patternColor * (1.0 - texture2D(brushTexture, patternTexCoords).r); \
+    }\n";
+
+
+// Linear Gradient Brush
+static const char* const qglslPositionWithLinearGradientBrushVertexShader = "\
+    attribute highp   vec4  vertexCoordsArray; \
+    uniform   highp   mat4  pmvMatrix; \
+    uniform   mediump vec2  halfViewportSize; \
+    uniform   highp   vec3  linearData; \
+    uniform   highp   mat3  brushTransform; \
+    varying   mediump float index ; \
+    uniform   highp   float depth;\
+    void setPosition() { \
+        gl_Position = pmvMatrix * vertexCoordsArray;\
+        gl_Position.xy = gl_Position.xy / gl_Position.w; \
+        gl_Position.z = depth;\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+        gl_Position.w = invertedHTexCoordsZ; \
+        index = (dot(linearData.xy, hTexCoords.xy) * linearData.z) * invertedHTexCoordsZ; \
+    }";
+
+static const char* const qglslAffinePositionWithLinearGradientBrushVertexShader
+                 = qglslPositionWithLinearGradientBrushVertexShader;
+
+static const char* const qglslLinearGradientBrushSrcFragmentShader = "\
+    uniform         sampler2D   brushTexture; \
+    varying mediump float       index; \
+    lowp vec4 srcPixel() { \
+        mediump vec2 val = vec2(index, 0.5); \
+        return texture2D(brushTexture, val); \
+    }\n";
+
+
+// Conical Gradient Brush
+static const char* const qglslPositionWithConicalGradientBrushVertexShader = "\
+    attribute highp   vec4  vertexCoordsArray;\
+    uniform   highp   mat4  pmvMatrix;\
+    uniform   mediump vec2  halfViewportSize; \
+    uniform   highp   mat3  brushTransform; \
+    varying   highp   vec2  A; \
+    uniform   highp   float depth;\
+    void setPosition(void)\
+    {\
+        gl_Position = pmvMatrix * vertexCoordsArray;\
+        gl_Position.xy = gl_Position.xy / gl_Position.w; \
+        gl_Position.z = depth; \
+        mediump vec2  viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+        gl_Position.w = invertedHTexCoordsZ; \
+        A = hTexCoords.xy * invertedHTexCoordsZ; \
+    }";
+
+static const char* const qglslAffinePositionWithConicalGradientBrushVertexShader
+                 = qglslPositionWithConicalGradientBrushVertexShader;
+
+static const char* const qglslConicalGradientBrushSrcFragmentShader = "\n\
+    #define INVERSE_2PI 0.1591549430918953358 \n\
+    uniform         sampler2D   brushTexture; \n\
+    uniform mediump float       angle; \
+    varying highp   vec2        A; \
+    lowp vec4 srcPixel() { \
+        highp float t; \
+        if (abs(A.y) == abs(A.x)) \
+            t = (atan(-A.y + 0.002, A.x) + angle) * INVERSE_2PI; \
+        else \
+            t = (atan(-A.y, A.x) + angle) * INVERSE_2PI; \
+        return texture2D(brushTexture, vec2(t - floor(t), 0.5)); \
+    }";
+
+
+// Radial Gradient Brush
+static const char* const qglslPositionWithRadialGradientBrushVertexShader = "\
+    attribute highp   vec4 vertexCoordsArray;\
+    uniform   highp   mat4 pmvMatrix;\
+    uniform   mediump vec2 halfViewportSize; \
+    uniform   highp   mat3 brushTransform; \
+    uniform   highp   vec2 fmp; \
+    varying   highp   float b; \
+    varying   highp   vec2  A; \
+    uniform   highp   float depth;\
+    void setPosition(void) \
+    {\
+        gl_Position = pmvMatrix * vertexCoordsArray;\
+        gl_Position.xy = gl_Position.xy / gl_Position.w; \
+        gl_Position.z = depth; \
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+        gl_Position.w = invertedHTexCoordsZ; \
+        A = hTexCoords.xy * invertedHTexCoordsZ; \
+        b = 2.0 * dot(A, fmp); \
+    }";
+
+static const char* const qglslAffinePositionWithRadialGradientBrushVertexShader
+                 = qglslPositionWithRadialGradientBrushVertexShader;
+
+static const char* const qglslRadialGradientBrushSrcFragmentShader = "\
+    uniform         sampler2D   brushTexture; \
+    uniform highp   float       fmp2_m_radius2; \
+    uniform highp   float       inverse_2_fmp2_m_radius2; \
+    varying highp   float       b; \
+    varying highp   vec2        A; \
+    lowp vec4 srcPixel() { \
+        highp float c = -dot(A, A); \
+        highp vec2 val = vec2((-b + sqrt(b*b - 4.0*fmp2_m_radius2*c)) * inverse_2_fmp2_m_radius2, 0.5); \
+        return texture2D(brushTexture, val); \
+    }";
+
+
+// Texture Brush
+static const char* const qglslPositionWithTextureBrushVertexShader = "\
+    attribute highp   vec4  vertexCoordsArray; \
+    uniform   highp   mat4  pmvMatrix; \
+    uniform   mediump vec2  halfViewportSize; \
+    uniform   mediump vec2  invertedTextureSize; \
+    uniform   mediump mat3  brushTransform; \
+    varying   mediump vec2  brushTextureCoords; \
+    uniform   highp   float depth;\
+    void setPosition(void) { \
+            gl_Position = pmvMatrix * vertexCoordsArray;\
+            gl_Position.xy = gl_Position.xy / gl_Position.w; \
+            gl_Position.z = depth; \
+            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+            gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+            gl_Position.w = invertedHTexCoordsZ; \
+            brushTextureCoords.xy = (hTexCoords.xy * invertedTextureSize) * gl_Position.w; \
+            brushTextureCoords.y = -brushTextureCoords.y; \
+    }";
+
+static const char* const qglslAffinePositionWithTextureBrushVertexShader
+                 = qglslPositionWithTextureBrushVertexShader;
+
+static const char* const qglslTextureBrushSrcFragmentShader = "\
+    varying mediump vec2      brushTextureCoords; \
+    uniform         sampler2D brushTexture; \
+    lowp vec4 srcPixel() { \
+        return texture2D(brushTexture, brushTextureCoords); \
+    }";
+
+static const char* const qglslTextureBrushSrcWithPatternFragmentShader = "\
+    varying mediump vec2      brushTextureCoords; \
+    uniform lowp    vec4      patternColor; \
+    uniform         sampler2D brushTexture; \
+    lowp vec4 srcPixel() { \
+        return patternColor * (1.0 - texture2D(brushTexture, brushTextureCoords).r); \
+    }";
+
+// Solid Fill Brush
+static const char* const qglslSolidBrushSrcFragmentShader = "\
+    uniform lowp vec4 fragmentColor; \
+    lowp vec4 srcPixel() { \
+        return fragmentColor; \
+    }";
+
+static const char* const qglslImageSrcFragmentShader = "\
+    varying highp vec2      textureCoords; \
+    uniform       sampler2D imageTexture; \
+    lowp vec4 srcPixel() { \
+        return texture2D(imageTexture, textureCoords); \
+    }";
+
+static const char* const qglslImageSrcWithPatternFragmentShader = "\
+    varying highp vec2      textureCoords; \
+    uniform lowp  vec4      patternColor; \
+    uniform       sampler2D imageTexture; \
+    lowp vec4 srcPixel() { \
+        return patternColor * (1.0 - texture2D(imageTexture, textureCoords).r); \
+    }\n";
+
+static const char* const qglslNonPremultipliedImageSrcFragmentShader = "\
+    varying highp vec2      textureCoords; \
+    uniform       sampler2D imageTexture; \
+    lowp vec4 srcPixel() { \
+        lowp vec4 sample = texture2D(imageTexture, textureCoords); \
+        sample.rgb = sample.rgb * sample.a; \
+        return sample; \
+    }";
+
+static const char* const qglslShockingPinkSrcFragmentShader = "\
+    lowp vec4 srcPixel() { \
+        return vec4(0.98, 0.06, 0.75, 1.0); \
+    }";
+
+
+static const char* const qglslMainFragmentShader_CMO = "\
+    uniform lowp float globalOpacity; \
+    lowp vec4 srcPixel(); \
+    lowp vec4 applyMask(lowp vec4); \
+    lowp vec4 compose(lowp vec4); \
+    void main() { \
+        gl_FragColor = applyMask(compose(srcPixel()*globalOpacity))); \
+    }";
+
+static const char* const qglslMainFragmentShader_CM = "\
+    lowp vec4 srcPixel(); \
+    lowp vec4 applyMask(lowp vec4); \
+    lowp vec4 compose(lowp vec4); \
+    void main() { \
+        gl_FragColor = applyMask(compose(srcPixel())); \
+    }";
+
+static const char* const qglslMainFragmentShader_MO = "\
+    uniform lowp float globalOpacity; \
+    lowp vec4 srcPixel(); \
+    lowp vec4 applyMask(lowp vec4); \
+    void main() { \
+        gl_FragColor = applyMask(srcPixel()*globalOpacity); \
+    }";
+
+static const char* const qglslMainFragmentShader_M = "\
+    lowp vec4 srcPixel(); \
+    lowp vec4 applyMask(lowp vec4); \
+    void main() { \
+        gl_FragColor = applyMask(srcPixel()); \
+    }";
+
+static const char* const qglslMainFragmentShader_CO = "\
+    uniform lowp float globalOpacity; \
+    lowp vec4 srcPixel(); \
+    lowp vec4 compose(lowp vec4); \
+    void main() { \
+        gl_FragColor = compose(srcPixel()*globalOpacity); \
+    }";
+
+static const char* const qglslMainFragmentShader_C = "\
+    lowp vec4 srcPixel(); \
+    lowp vec4 compose(lowp vec4); \
+    void main() { \
+        gl_FragColor = compose(srcPixel()); \
+    }";
+
+static const char* const qglslMainFragmentShader_O = "\
+    uniform lowp float globalOpacity; \
+    lowp vec4 srcPixel(); \
+    void main() { \
+        gl_FragColor = srcPixel()*globalOpacity; \
+    }";
+
+static const char* const qglslMainFragmentShader = "\
+    lowp vec4 srcPixel(); \
+    void main() { \
+        gl_FragColor = srcPixel(); \
+    }";
+
+static const char* const qglslMaskFragmentShader = "\
+    varying highp   vec2      textureCoords;\
+    uniform         sampler2D maskTexture;\
+    lowp vec4 applyMask(lowp vec4 src) \
+    {\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \
+        return src * mask.a; \
+    }";
+
+/*
+    Left to implement:
+        RgbMaskFragmentShader,
+        RgbMaskWithGammaFragmentShader,
+
+        MultiplyCompositionModeFragmentShader,
+        ScreenCompositionModeFragmentShader,
+        OverlayCompositionModeFragmentShader,
+        DarkenCompositionModeFragmentShader,
+        LightenCompositionModeFragmentShader,
+        ColorDodgeCompositionModeFragmentShader,
+        ColorBurnCompositionModeFragmentShader,
+        HardLightCompositionModeFragmentShader,
+        SoftLightCompositionModeFragmentShader,
+        DifferenceCompositionModeFragmentShader,
+        ExclusionCompositionModeFragmentShader,
+*/
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // GLGC_SHADER_SOURCE_H
diff --git a/src/opengl/gl2paintengineex/qglgradientcache.cpp b/src/opengl/gl2paintengineex/qglgradientcache.cpp
index b4591b2..f1a8850 100644
--- a/src/opengl/gl2paintengineex/qglgradientcache.cpp
+++ b/src/opengl/gl2paintengineex/qglgradientcache.cpp
@@ -44,7 +44,9 @@
 
 #include "qglgradientcache_p.h"
 
-void QGLGradientCache::cleanCache() {
+QT_BEGIN_NAMESPACE
+
+void QGL2GradientCache::cleanCache() {
     QGLGradientColorTableHash::const_iterator it = cache.constBegin();
     for (; it != cache.constEnd(); ++it) {
         const CacheInfo &cache_info = it.value();
@@ -53,7 +55,7 @@ void QGLGradientCache::cleanCache() {
     cache.clear();
 }
 
-GLuint QGLGradientCache::getBuffer(const QGradient &gradient, qreal opacity, const QGLContext *ctx)
+GLuint QGL2GradientCache::getBuffer(const QGradient &gradient, qreal opacity, const QGLContext *ctx)
 {
     if (buffer_ctx && !qgl_share_reg()->checkSharing(buffer_ctx, ctx))
         cleanCache();
@@ -84,7 +86,7 @@ GLuint QGLGradientCache::getBuffer(const QGradient &gradient, qreal opacity, con
 }
 
 
-GLuint QGLGradientCache::addCacheElement(quint64 hash_val, const QGradient &gradient, qreal opacity)
+GLuint QGL2GradientCache::addCacheElement(quint64 hash_val, const QGradient &gradient, qreal opacity)
 {
     if (cache.size() == maxCacheSize()) {
         int elem_to_remove = qrand() % maxCacheSize();
@@ -109,34 +111,31 @@ GLuint QGLGradientCache::addCacheElement(quint64 hash_val, const QGradient &grad
 }
 
 
-// GL's expects pixels in RGBA, bin-endian (ABGR on x86).
-// Qt stores in ARGB using whatever byte-order the mancine uses.
+// GL's expects pixels in RGBA (when using GL_RGBA), bin-endian (ABGR on x86).
+// Qt always stores in ARGB reguardless of the byte-order the mancine uses.
 static inline uint qtToGlColor(uint c)
 {
     uint o;
 #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
-    o = c & 0xFF00FF00; // alpha & green already in the right place
-    o |= (c >> 16) & 0x000000FF; // red
-    o |= (c << 16) & 0x00FF0000; // blue
-
+    o = (c & 0xff00ff00)  // alpha & green already in the right place
+        | ((c >> 16) & 0x000000ff) // red
+        | ((c << 16) & 0x00ff0000); // blue
 #else //Q_BIG_ENDIAN
-    o = c & 0x00FF00FF; // alpha & green already in the right place
-    o |= (c << 16) & 0xFF000000; // red
-    o |= (c >> 16) & 0x0000FF00; // blue
-#error big endian not tested with QGLGraphicsContext
+    o = (c << 8)
+        | ((c >> 24) & 0x000000ff);
 #endif // Q_BYTE_ORDER
     return o;
 }
 
 //TODO: Let GL generate the texture using an FBO
-void QGLGradientCache::generateGradientColorTable(const QGradient& gradient, uint *colorTable, int size, qreal opacity) const
+void QGL2GradientCache::generateGradientColorTable(const QGradient& gradient, uint *colorTable, int size, qreal opacity) const
 {
     int pos = 0;
     QGradientStops s = gradient.stops();
     QVector<uint> colors(s.size());
 
     for (int i = 0; i < s.size(); ++i)
-        colors[i] = s[i].second.rgba(); // Qt LIES! It returns ARGB
+        colors[i] = s[i].second.rgba(); // Qt LIES! It returns ARGB (on little-endian AND on big-endian)
 
     bool colorInterpolation = (gradient.interpolationMode() == QGradient::ColorInterpolation);
 
@@ -183,3 +182,5 @@ void QGLGradientCache::generateGradientColorTable(const QGradient& gradient, uin
     // Make sure the last color stop is represented at the end of the table
     colorTable[size-1] = last_color;
 }
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qglgradientcache_p.h b/src/opengl/gl2paintengineex/qglgradientcache_p.h
index 346ea13..f088359 100644
--- a/src/opengl/gl2paintengineex/qglgradientcache_p.h
+++ b/src/opengl/gl2paintengineex/qglgradientcache_p.h
@@ -52,9 +52,11 @@
 
 #include <QMultiHash>
 #include <QObject>
-#include <QtOpenGL>
+#include <QtOpenGL/QtOpenGL>
 
-class QGLGradientCache : public QObject
+QT_BEGIN_NAMESPACE
+
+class QGL2GradientCache : public QObject
 {
     Q_OBJECT
     struct CacheInfo
@@ -71,7 +73,7 @@ class QGLGradientCache : public QObject
     typedef QMultiHash<quint64, CacheInfo> QGLGradientColorTableHash;
 
 public:
-    QGLGradientCache() : QObject(), buffer_ctx(0)
+    QGL2GradientCache() : QObject(), buffer_ctx(0)
     {
 /*
         connect(QGLSignalProxy::instance(),
@@ -104,5 +106,5 @@ public slots:
     }
 };
 
-
+QT_END_NAMESPACE
 
diff --git a/src/opengl/gl2paintengineex/qglpexshadermanager.cpp b/src/opengl/gl2paintengineex/qglpexshadermanager.cpp
deleted file mode 100644
index e460e08..0000000
--- a/src/opengl/gl2paintengineex/qglpexshadermanager.cpp
+++ /dev/null
@@ -1,450 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Qt Software Information (qt-info@nokia.com)
-**
-** This file is part of the QtOpenGL module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the either Technology Preview License Agreement or the
-** Beta Release License Agreement.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain
-** additional rights. These rights are described in the Nokia Qt LGPL
-** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
-** package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
-**
-** If you are unsure which license is appropriate for your use, please
-** contact the sales department at qt-sales@nokia.com.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qglpexshadermanager_p.h"
-
-#include "glgc_shader_source.h"
-
-QGLPEXShaderManager::QGLPEXShaderManager(const QGLContext* context)
-{
-    ctx = const_cast<QGLContext*>(context);
-
-    defaultVertexShader= new QGLShader(QGLShader::VertexShader, context);
-    defaultVertexShader->addSource(QLatin1String(qglslDefaultVertexShader));
-    if (!defaultVertexShader->compile())
-        qWarning() << "Default vertex shader failed to compile: " << defaultVertexShader->log();
-
-    noBrushShader = new QGLShader(QGLShader::FragmentShader, context);
-    noBrushShader->addSource(QLatin1String(qglslFragmentShaderMain));
-    noBrushShader->addSource(QLatin1String(qglslNoBrushFragmentShader));
-    if (!noBrushShader->compile())
-        qWarning() << "No brush shader failed to compile:" << noBrushShader->log();
-
-
-    // Create a program for noBrush:
-    QGLShaderProgram* noBrushProg = new QGLShaderProgram(ctx);
-    noBrushProg->addShader(defaultVertexShader);
-    noBrushProg->addShader(noBrushShader);
-    if (!noBrushProg->link())
-        qWarning() << "NoBrush shader program failed to link:" << noBrushProg->log();
-
-    // Add noBrush Program to cache:
-    QGLCachedShaderProg cachedProg;
-    cachedProg.vertexShader = defaultVertexShader;
-    cachedProg.brushShader = noBrushShader;
-    cachedProg.compositionShader = 0;
-    cachedProg.shader = noBrushProg;
-    cachedPrograms.append(cachedProg);
-
-
-    // Set state
-    useGlobalOpacity = true;
-    currentBrushStyle = Qt::NoBrush;
-    currentTransformType = FullTransform;
-    shaderProgNeedsChanging = false;
-    activeProgram = noBrushProg;
-
-    solidBrushShader    = 0;
-
-    conicalBrushVertexShader = 0;
-    conicalBrushFragmentShader = 0;
-
-    radialBrushVertexShader   = 0;
-    radialBrushFragmentShader   = 0;
-
-    linearBrushVertexShader = 0;
-    linearBrushFragmentShader = 0;
-
-    patternBrushVertexShader  = 0;
-    patternBrushFragmentShader  = 0;
-
-    textureBrushFragmentShader  = 0;
-    textureBrushVertexShader  = 0;
-
-    simpleFragmentShader = 0;
-    simpleShaderProgram  = 0;
-
-    imageVertexShader = 0;
-    imageFragmentShader = 0;
-    imageShaderProgram = 0;
-
-    textVertexShader = 0;
-    textFragmentShader = 0;
-    textShaderProgram = 0;
-}
-
-QGLPEXShaderManager::~QGLPEXShaderManager()
-{
-    delete defaultVertexShader;
-    delete imageVertexShader;
-    delete imageFragmentShader;
-    delete imageShaderProgram;
-    delete textVertexShader;
-    delete textFragmentShader;
-    delete textShaderProgram;
-    delete noBrushShader;
-    delete solidBrushShader;
-
-    delete conicalBrushVertexShader;
-    delete conicalBrushFragmentShader;
-
-    delete radialBrushVertexShader;
-    delete radialBrushFragmentShader;
-
-    delete linearBrushFragmentShader;
-    delete linearBrushVertexShader;
-
-    delete patternBrushFragmentShader;
-    delete patternBrushVertexShader;
-
-    delete textureBrushFragmentShader;
-    delete textureBrushVertexShader;
-
-    delete simpleFragmentShader;
-    delete simpleShaderProgram;
-}
-
-void QGLPEXShaderManager::setUseGlobalOpacity(bool value)
-{
-    if (value != useGlobalOpacity)
-        shaderProgNeedsChanging = true;
-
-    useGlobalOpacity = value;
-}
-
-void QGLPEXShaderManager::setBrushStyle(Qt::BrushStyle style)
-{
-    if (currentBrushStyle != style)
-        shaderProgNeedsChanging = true;
-
-    currentBrushStyle = style;
-}
-
-void QGLPEXShaderManager::setAffineOnlyBrushTransform(bool value)
-{
-    Q_UNUSED(value);
-    // TODO
-}
-
-bool QGLPEXShaderManager::useCorrectShaderProg()
-{
-    if (!shaderProgNeedsChanging) {
-        activeProgram->use();
-        return false;
-    }
-
-    const char* fragmentShaderMainSrc = qglslFragmentShaderMain;
-    QGLShader* vertexShader = defaultVertexShader;
-    QGLShader* fragmentShader = noBrushShader;
-
-    // Make sure we compile up the correct brush shader
-    switch (currentBrushStyle) {
-    case Qt::NoBrush:
-        break;
-    case Qt::SolidPattern:
-        if (!solidBrushShader) {
-            qDebug("Compiling qglslSolidBrushFragmentShader");
-            solidBrushShader = new QGLShader(QGLShader::FragmentShader, ctx);
-            solidBrushShader->addSource(QLatin1String(qglslNoOpacityFragmentShaderMain));
-            solidBrushShader->addSource(QLatin1String(qglslSolidBrushFragmentShader));
-            if (!solidBrushShader->compile())
-                qWarning() << "qglslSolidBrush failed to compile:" << solidBrushShader->log();
-        }
-        fragmentShader = solidBrushShader;
-        break;
-    case Qt::TexturePattern:
-        if (!textureBrushVertexShader) {
-            qDebug("Compiling qglslTextureBrushVertexShader");
-            textureBrushVertexShader = new QGLShader(QGLShader::VertexShader, ctx);
-            textureBrushVertexShader->addSource(QLatin1String(qglslTextureBrushVertexShader));
-            if (!textureBrushVertexShader->compile()) {
-                qWarning() << "qglslTextureBrushVertexShader failed to compile: "
-                           << textureBrushVertexShader->log();
-            }
-        }
-        vertexShader = textureBrushVertexShader;
-
-        if (!textureBrushFragmentShader) {
-            qDebug("Compiling qglslTextureBrushFragmentShader");
-            textureBrushFragmentShader = new QGLShader(QGLShader::FragmentShader, ctx);
-            textureBrushFragmentShader->addSource(QLatin1String(fragmentShaderMainSrc));
-            textureBrushFragmentShader->addSource(QLatin1String(qglslTextureBrushFragmentShader));
-            if (!textureBrushFragmentShader->compile()) {
-                qWarning() << "qglslTextureBrushFragmentShader failed to compile:"
-                           << textureBrushFragmentShader->log();
-            }
-        }
-        fragmentShader = textureBrushFragmentShader;
-        break;
-    case Qt::LinearGradientPattern:
-        if (!linearBrushVertexShader) {
-            qDebug("Compiling qglslLinearGradientBrushVertexShader");
-            linearBrushVertexShader = new QGLShader(QGLShader::VertexShader, ctx);
-            linearBrushVertexShader->addSource(QLatin1String(qglslLinearGradientBrushVertexShader));
-            if (!linearBrushVertexShader->compile()) {
-                qWarning() << "qglslLinearGradientBrushVertexShader failed to compile: "
-                           << linearBrushVertexShader->log();
-            }
-        }
-        vertexShader = linearBrushVertexShader;
-
-        if (!linearBrushFragmentShader) {
-            qDebug("Compiling qglslLinearGradientBrushFragmentShader");
-            linearBrushFragmentShader = new QGLShader(QGLShader::FragmentShader, ctx);
-            linearBrushFragmentShader->addSource(QLatin1String(fragmentShaderMainSrc));
-            linearBrushFragmentShader->addSource(QLatin1String(qglslLinearGradientBrushFragmentShader));
-            if (!linearBrushFragmentShader->compile()) {
-                qWarning() << "qglslLinearGradientBrushFragmentShader failed to compile:"
-                           << linearBrushFragmentShader->log();
-            }
-        }
-        fragmentShader = linearBrushFragmentShader;
-        break;
-    case Qt::RadialGradientPattern:
-        if (!radialBrushVertexShader) {
-            qDebug("Compiling qglslRadialGradientBrushVertexShader");
-            radialBrushVertexShader = new QGLShader(QGLShader::VertexShader, ctx);
-            radialBrushVertexShader->addSource(QLatin1String(qglslRadialGradientBrushVertexShader));
-            if (!radialBrushVertexShader->compile()) {
-                qWarning() << "qglslRadialGradientBrushVertexShader failed to compile: "
-                           << radialBrushVertexShader->log();
-            }
-        }
-        vertexShader = radialBrushVertexShader;
-
-        if (!radialBrushFragmentShader) {
-            qDebug("Compiling qglslRadialGradientBrushFragmentShader");
-            radialBrushFragmentShader = new QGLShader(QGLShader::FragmentShader, ctx);
-            radialBrushFragmentShader->addSource(QLatin1String(fragmentShaderMainSrc));
-            radialBrushFragmentShader->addSource(QLatin1String(qglslRadialGradientBrushFragmentShader));
-            if (!radialBrushFragmentShader->compile()) {
-                qWarning() << "qglslRadialGradientBrushFragmentShader failed to compile:"
-                           << radialBrushFragmentShader->log();
-            }
-        }
-        fragmentShader = radialBrushFragmentShader;
-        break;
-    case Qt::ConicalGradientPattern:
-        // FIXME: We currently use the same vertex shader as radial brush
-        if (!conicalBrushVertexShader) {
-            qDebug("Compiling qglslConicalGradientBrushVertexShader");
-            conicalBrushVertexShader = new QGLShader(QGLShader::VertexShader, ctx);
-            conicalBrushVertexShader->addSource(QLatin1String(qglslConicalGradientBrushVertexShader));
-            if (!conicalBrushVertexShader->compile()) {
-                qWarning() << "qglslConicalGradientBrushVertexShader failed to compile: "
-                           << conicalBrushVertexShader->log();
-            }
-        }
-        vertexShader = conicalBrushVertexShader;
-
-        if (!conicalBrushFragmentShader) {
-            qDebug("Compiling qglslConicalGradientBrushFragmentShader");
-            conicalBrushFragmentShader = new QGLShader(QGLShader::FragmentShader, ctx);
-            conicalBrushFragmentShader->addSource(QLatin1String(fragmentShaderMainSrc));
-            conicalBrushFragmentShader->addSource(QLatin1String(qglslConicalGradientBrushFragmentShader));
-            if (!conicalBrushFragmentShader->compile()) {
-                qWarning() << "qglslConicalGradientBrushFragmentShader failed to compile:"
-                           << conicalBrushFragmentShader->log();
-            }
-        }
-        fragmentShader = conicalBrushFragmentShader;
-        break;
-    case Qt::Dense1Pattern:
-    case Qt::Dense2Pattern:
-    case Qt::Dense3Pattern:
-    case Qt::Dense4Pattern:
-    case Qt::Dense5Pattern:
-    case Qt::Dense6Pattern:
-    case Qt::Dense7Pattern:
-    case Qt::HorPattern:
-    case Qt::VerPattern:
-    case Qt::CrossPattern:
-    case Qt::BDiagPattern:
-    case Qt::FDiagPattern:
-    case Qt::DiagCrossPattern:
-        if (!patternBrushVertexShader) {
-            qDebug("Compiling qglslPatternBrushVertexShader");
-            patternBrushVertexShader = new QGLShader(QGLShader::VertexShader, ctx);
-            patternBrushVertexShader->addSource(QLatin1String(qglslPatternBrushVertexShader));
-            if (!patternBrushVertexShader->compile()) {
-                qWarning() << "qglslPatternBrushVertexShader failed to compile: "
-                           << patternBrushVertexShader->log();
-            }
-        }
-        vertexShader = patternBrushVertexShader;
-
-        if (!patternBrushFragmentShader) {
-            qDebug("Compiling qglslPatternBrushFragmentShader");
-            patternBrushFragmentShader = new QGLShader(QGLShader::FragmentShader, ctx);
-            patternBrushFragmentShader->addSource(QLatin1String(qglslNoOpacityFragmentShaderMain));
-            patternBrushFragmentShader->addSource(QLatin1String(qglslPatternBrushFragmentShader));
-            if (!patternBrushFragmentShader->compile()) {
-                qWarning() << "qglslPatternBrushFragmentShader failed to compile:"
-                           << patternBrushFragmentShader->log();
-            }
-        }
-        fragmentShader = patternBrushFragmentShader;
-        break;
-    default:
-        qWarning("Unimplemented brush style (%d)", currentBrushStyle);
-    }
-
-    // Now newBrushShader is set correctly, check to see if we already have the program
-    // already linked and ready to go in the cache:
-    bool foundProgram = false;
-    foreach (QGLCachedShaderProg cachedProg, cachedPrograms) {
-        if ((cachedProg.vertexShader == vertexShader) &&
-            (cachedProg.brushShader == fragmentShader) &&
-            (cachedProg.compositionShader == 0) ) {
-
-            activeProgram = cachedProg.shader;
-            foundProgram = true;
-            break;
-        }
-    }
-
-    if (!foundProgram) {
-        qDebug() << "Linking shader program for " << currentBrushStyle;
-        // Required program not found - create it.
-        QGLShaderProgram* newProg = new QGLShaderProgram(ctx);
-
-        newProg->addShader(vertexShader);
-        newProg->addShader(fragmentShader);
-
-        if (!newProg->link())
-            qWarning() << "Shader program for " << currentBrushStyle << "failed to link:" << newProg->log();
-
-        QGLCachedShaderProg cachedProg;
-        cachedProg.vertexShader = vertexShader;
-        cachedProg.brushShader = fragmentShader;
-        cachedProg.compositionShader = 0;
-        cachedProg.shader = newProg;
-
-        cachedPrograms.append(cachedProg);
-        activeProgram = newProg;
-    }
-
-    activeProgram->use();
-    shaderProgNeedsChanging = false;
-    return true;
-}
-
-QGLShaderProgram* QGLPEXShaderManager::brushShader()
-{
-    return activeProgram;
-}
-
-// The only uniform the simple shader has is the PMV matrix
-QGLShaderProgram* QGLPEXShaderManager::simpleShader()
-{
-    if (!simpleShaderProgram) {
-        simpleShaderProgram = new QGLShaderProgram(ctx);
-
-        if (!simpleFragmentShader) {
-            simpleFragmentShader = new QGLShader(QGLShader::FragmentShader, ctx);
-            simpleFragmentShader->addSource(QLatin1String(qglslSimpleFragmentShader));
-            if (!simpleFragmentShader->compile())
-                qWarning() << "qglslSimpleFragmentShader failed to compile:" << simpleFragmentShader->log();
-        }
-
-        simpleShaderProgram->addShader(defaultVertexShader);
-        simpleShaderProgram->addShader(simpleFragmentShader);
-        if (!simpleShaderProgram->link())
-            qWarning() << "Simple shader program failed to link:" << simpleShaderProgram->log();
-    }
-
-    return simpleShaderProgram;
-}
-
-QGLShaderProgram* QGLPEXShaderManager::imageShader()
-{
-    if (!imageShaderProgram) {
-        if (!imageVertexShader) {
-            imageVertexShader = new QGLShader(QGLShader::VertexShader, ctx);
-            imageVertexShader->addSource(QLatin1String(qglslImageVertexShader));
-            if (!imageVertexShader->compile())
-                qWarning() << "Image/Pixmap vertex shader failed to compile:" << imageVertexShader->log();
-        }
-
-        if (!imageFragmentShader) {
-            imageFragmentShader = new QGLShader(QGLShader::FragmentShader, ctx);
-            imageFragmentShader->addSource(QLatin1String(qglslImageFragmentShader));
-            if (!imageFragmentShader->compile())
-                qWarning() << "Image/Pixmap fragment shader failed to compile:" << imageFragmentShader->log();
-        }
-
-        imageShaderProgram = new QGLShaderProgram(ctx);
-        imageShaderProgram->addShader(imageVertexShader);
-        imageShaderProgram->addShader(imageFragmentShader);
-        if (!imageShaderProgram->link())
-            qWarning() << "Image/Pixmap shader program failed to link:" << imageShaderProgram->log();
-    }
-
-    return imageShaderProgram;
-}
-
-QGLShaderProgram* QGLPEXShaderManager::textShader()
-{
-    if (!textShaderProgram) {
-        if (!textVertexShader) {
-            textVertexShader = new QGLShader(QGLShader::VertexShader, ctx);
-            textVertexShader->addSource(QLatin1String(qglslImageVertexShader));
-            if (!textVertexShader->compile())
-                qWarning() << "Text vertex shader failed to compile:" << textVertexShader->log();
-        }
-
-        if (!textFragmentShader) {
-            textFragmentShader = new QGLShader(QGLShader::FragmentShader, ctx);
-            textFragmentShader->addSource(QLatin1String(qglslTextFragmentShader));
-            if (!textFragmentShader->compile())
-                qWarning() << "Text fragment shader failed to compile:" << textFragmentShader->log();
-        }
-
-        textShaderProgram = new QGLShaderProgram(ctx);
-        textShaderProgram->addShader(textVertexShader);
-        textShaderProgram->addShader(textFragmentShader);
-        if (!textShaderProgram->link())
-            qWarning() << "Text shader program failed to link:" << textShaderProgram->log();
-    }
-
-    return textShaderProgram;
-}
-
diff --git a/src/opengl/gl2paintengineex/qglpexshadermanager_p.h b/src/opengl/gl2paintengineex/qglpexshadermanager_p.h
deleted file mode 100644
index c8f47b2..0000000
--- a/src/opengl/gl2paintengineex/qglpexshadermanager_p.h
+++ /dev/null
@@ -1,156 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Qt Software Information (qt-info@nokia.com)
-**
-** This file is part of the QtOpenGL module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the either Technology Preview License Agreement or the
-** Beta Release License Agreement.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain
-** additional rights. These rights are described in the Nokia Qt LGPL
-** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
-** package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
-**
-** If you are unsure which license is appropriate for your use, please
-** contact the sales department at qt-sales@nokia.com.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-//
-//  W A R N I N G
-//  -------------
-//
-// This file is not part of the Qt API.  It exists purely as an
-// implementation detail.  This header file may change from version to
-// version without notice, or even be removed.
-//
-// We mean it.
-//
-
-#include "qglshader_p.h"
-
-
-// Worstcase combo: Brush->Mask->Composition
-
-/*
-    Vertex shader source is specified with a single string. This string
-    contains the main function and sets the gl_Position. The choice of
-    which vertex shader to use depends on:
-        - Brush style
-        - Brush transform->isAffine()
-
-    Fragment shaders are specified as multiple strings, one for the main
-    function, one for the brush calculation and optionally one for the
-    extended composition mode. Brushes are implementations of
-        "mediump vec4 brush()" 
-    Composition modes are implemented as a
-        "mediump vec4 compose(mediump vec4 color)"
-    NOTE: Precision may change in future.
-
-    The choice of which main() fragment shader string to use depends on:
-        - Global opacity
-        - Brush style (some brushes apply opacity themselves)
-        - Use of mask (TODO: Need to support high quality anti-aliasing & text)
-        - Composition mode
-
-    The choice of which brush() fragment shader to use depends on:
-        - Brush style
-
-*/
-
-
-struct QGLCachedShaderProg
-{
-    QGLShader*          vertexShader;
-    QGLShader*          brushShader;
-    QGLShader*          compositionShader;
-    QGLShaderProgram*   shader;
-};
-
-class QGLPEXShaderManager
-{
-public:
-    QGLPEXShaderManager(const QGLContext* context);
-    ~QGLPEXShaderManager();
-
-    enum TransformType {IdentityTransform, ScaleTransform, TranslateTransform, FullTransform};
-
-    void optimiseForBrushTransform(const QTransform& transform);
-    void setBrushStyle(Qt::BrushStyle style);
-    void setUseGlobalOpacity(bool value);
-    void setAffineOnlyBrushTransform(bool value); // I.e. Do we need to apply perspective-correction?
-                                                  // Not doing so saves some vertex shader calculations.
-
-    bool useCorrectShaderProg(); // returns true if the shader program has changed
-
-    QGLShaderProgram* brushShader();
-    QGLShaderProgram* simpleShader(); // Used to draw into e.g. stencil buffers
-    QGLShaderProgram* imageShader();
-    QGLShaderProgram* textShader();
-
-private:
-    QGLShader* defaultVertexShader;
-
-    QGLShader* imageVertexShader;
-    QGLShader* imageFragmentShader;
-    QGLShaderProgram* imageShaderProgram;
-
-    QGLShader* textVertexShader;
-    QGLShader* textFragmentShader;
-    QGLShaderProgram* textShaderProgram;
-
-    QGLShader* noBrushShader;
-    QGLShader* solidBrushShader;
-
-    QGLShader* conicalBrushVertexShader;
-    QGLShader* conicalBrushFragmentShader;
-
-    QGLShader* radialBrushVertexShader;
-    QGLShader* radialBrushFragmentShader;
-
-    QGLShader* linearBrushVertexShader;
-    QGLShader* linearBrushFragmentShader;
-
-    QGLShader* patternBrushVertexShader;
-    QGLShader* patternBrushFragmentShader;
-
-    QGLShader* textureBrushFragmentShader;
-    QGLShader* textureBrushVertexShader;
-
-    QGLShader*          simpleFragmentShader;
-    QGLShaderProgram*   simpleShaderProgram;
-
-    QGLShaderProgram*   activeProgram;
-
-    Qt::BrushStyle      currentBrushStyle;
-    bool                useGlobalOpacity;
-    TransformType       currentTransformType;
-    bool                shaderProgNeedsChanging;
-
-    QList<QGLCachedShaderProg> cachedPrograms;
-
-    QGLContext*          ctx;
-};
diff --git a/src/opengl/gl2paintengineex/qglshader.cpp b/src/opengl/gl2paintengineex/qglshader.cpp
deleted file mode 100644
index 634be84..0000000
--- a/src/opengl/gl2paintengineex/qglshader.cpp
+++ /dev/null
@@ -1,605 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Qt Software Information (qt-info@nokia.com)
-**
-** This file is part of the QtOpenGL module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the either Technology Preview License Agreement or the
-** Beta Release License Agreement.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain
-** additional rights. These rights are described in the Nokia Qt LGPL
-** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
-** package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
-**
-** If you are unsure which license is appropriate for your use, please
-** contact the sales department at qt-sales@nokia.com.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qglshader_p.h"
-
-
-// Windows needs to resolve OpenGL 2.0 function pointers for each context. The
-// QGL OpenGL 2.0 functions are actually macros, which take a "ctx" parameter.
-#define Q_CTX   QGLContext* ctx = d->ctx; \
-                if (!ctx) \
-                    return false; \
-                ctx->makeCurrent(); \
-
-
-
-
-class QGLShaderPrivate
-{
-public:
-    QGLShaderPrivate() : shaderId(0), valid(false), ctx(0) {}
-
-    GLuint                  shaderId;
-    QString                 source;
-    bool                    valid;
-    QGLShader::ShaderType   type;
-    QGLContext*             ctx;
-};
-
-
-QGLShader::QGLShader(QGLShader::ShaderType type, const QGLContext* ctx)
-    : d_ptr(new QGLShaderPrivate)
-{
-    Q_D(QGLShader);
-
-    if (!ctx)
-        ctx = QGLContext::currentContext();
-
-    if (!ctx) {
-        qWarning("QGLShader being created without a context");
-        return;
-    }
-
-    d->ctx = const_cast<QGLContext*>(ctx);
-    d->ctx->makeCurrent();
-
-    if (type == QGLShader::FragmentShader)
-        d->shaderId = glCreateShader(GL_FRAGMENT_SHADER);
-    else
-        d->shaderId = glCreateShader(GL_VERTEX_SHADER);
-
-    if (d->shaderId == 0) {
-        qWarning("Error creating shader object");
-        return;
-    }
-
-    d->type = type;
-}
-
-GLuint QGLShader::id()
-{
-    Q_D(QGLShader);
-    return d->shaderId;
-}
-
-const QGLContext* QGLShader::context()
-{
-    Q_D(QGLShader);
-    return d->ctx;
-}
-
-void QGLShader::clearSource()
-{
-    Q_D(QGLShader);
-    d->source.clear();
-    d->valid = false;
-}
-
-void QGLShader::addSource(const QLatin1String& newSource)
-{
-    Q_D(QGLShader);
-    d->source += newSource;
-    d->valid = false;
-}
-
-
-bool QGLShader::compile()
-{
-    Q_D(QGLShader);
-
-    d->valid = false;
-
-    if (d->source.size() == 0)
-        return false;
-
-    const QByteArray src_ba = d->source.toAscii();
-    const char* src = src_ba.constData();
-
-    glShaderSource(d->shaderId, 1, &src, 0);
-
-    glCompileShader(d->shaderId);
-
-    GLint shaderCompiled;
-    glGetShaderiv(d->shaderId, GL_COMPILE_STATUS, &shaderCompiled);
-    if (!shaderCompiled)
-        return false;
-
-    d->valid = true;
-    return true;
-}
-
-bool QGLShader::isValid()
-{
-    Q_D(QGLShader);
-    return d->valid;
-}
-
-QString QGLShader::log()
-{
-    Q_D(QGLShader);
-
-    char*  logData;
-    GLint  logSize;
-    GLint  logLength;
-
-    glGetShaderiv(d->shaderId, GL_INFO_LOG_LENGTH, &logSize);
-
-    if (!logSize)
-        return QString();
-
-    logData = new char[logSize];
-    glGetShaderInfoLog(d->shaderId, logSize, &logLength, logData);
-    QString result = QString::fromAscii(logData);
-    delete [] logData;
-
-    return result;
-}
-
-
-
-
-
-
-
-
-
-
-
-
-class QGLShaderProgramPrivate
-{
-public:
-    QGLShaderProgramPrivate() : valid(false), programId(0), ctx(0) {}
-    void populateVariableLists();
-
-    QVector<QGLShader*>     shaders;
-    QGLUniformList          uniforms;
-    QGLVertexAttributeList  attributeArrays;
-    bool                    valid;
-    GLuint                  programId;
-    QGLContext*             ctx;
-};
-
-
-
-void QGLShaderProgramPrivate::populateVariableLists()
-{
-    attributeArrays.clear();
-    uniforms.clear();
-
-    int count;
-    int sizeOfNameBuff;
-    char* name;
-    GLint nameLength;
-    GLenum type;
-    GLint  size;
-    GLint  location;
-
-    glGetProgramiv(programId, GL_ACTIVE_ATTRIBUTES, &count);
-    glGetProgramiv(programId, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &sizeOfNameBuff);
-    name = new char[sizeOfNameBuff];
-
-    for (int i = 0; i < count; ++i) {
-        nameLength = -1;
-        glGetActiveAttrib(programId, i, sizeOfNameBuff, &nameLength, &size, &type, name);
-        if (nameLength == -1)
-            continue;
-
-        location = glGetAttribLocation(programId, name);
-        attributeArrays.insert(QString::fromAscii(name), QGLVertexAttribute(type, location, ctx));
-    }
-
-    delete [] name;
-
-
-    glGetProgramiv(programId, GL_ACTIVE_UNIFORMS, &count);
-    glGetProgramiv(programId, GL_ACTIVE_UNIFORM_MAX_LENGTH, &sizeOfNameBuff);
-
-    name = new char[sizeOfNameBuff];
-
-    for (int i = 0; i < count; ++i) {
-        nameLength = -1;
-        glGetActiveUniform(programId, i, sizeOfNameBuff, &nameLength, &size, &type, name);
-        if (nameLength == -1)
-            continue;
-
-        location = glGetUniformLocation(programId, name);
-        uniforms.insert(QString::fromAscii(name), QGLUniform(type, location, ctx));
-    }
-}
-
-
-QGLShaderProgram::QGLShaderProgram(const QGLContext* ctx)
-    : d_ptr(new QGLShaderProgramPrivate)
-{
-    Q_D(QGLShaderProgram);
-    if (!ctx)
-        ctx = QGLContext::currentContext();
-
-    if (!ctx) {
-        qWarning("QGLShaderProgram being created without a context");
-        return;
-    }
-
-    d->ctx = const_cast<QGLContext*>(ctx);
-    d->ctx->makeCurrent();
-
-    d->programId = glCreateProgram();
-
-    d->valid = false;
-}
-
-
-const QGLUniformList & QGLShaderProgram::uniforms()
-{
-    Q_D(QGLShaderProgram);
-    return const_cast<const QGLUniformList&>(d->uniforms);
-}
-
-
-const QGLVertexAttributeList& QGLShaderProgram::vertexAttributes()
-{
-    Q_D(QGLShaderProgram);
-    return const_cast<const QGLVertexAttributeList&>(d->attributeArrays);
-}
-
-
-bool QGLShaderProgram::addShader(QGLShader* newShader)
-{
-    Q_D(QGLShaderProgram);
-    if (!newShader || !d->ctx)
-        return false;
-
-    if (newShader->context() != d->ctx) {
-        qWarning("Shader object's context does not match program's context");
-        return false;
-    }
-
-    if (!newShader->isValid())
-        return false;
-
-    QGLContext* ctx = d->ctx;
-    if (!ctx)
-        return false;
-    ctx->makeCurrent();
-
-    glAttachShader(d->programId, newShader->id());
-
-    d->shaders.append(newShader);
-    return true;
-}
-
-
-bool QGLShaderProgram::removeShader(QGLShader* oldShader)
-{
-    Q_D(QGLShaderProgram);
-
-    int idx = d->shaders.indexOf(oldShader);
-
-    if (idx == -1)
-        return false;
-
-    d->shaders.remove(idx);
-
-    QGLContext* ctx = d->ctx;
-    if (!ctx)
-        return false;
-    ctx->makeCurrent();
-
-    glDetachShader(d->programId, oldShader->id());
-    return true;
-}
-
-
-bool QGLShaderProgram::removeAllShaders()
-{
-    Q_D(QGLShaderProgram);
-
-    QGLContext* ctx = d->ctx;
-    if (!ctx)
-        return false;
-    ctx->makeCurrent();
-
-    foreach (QGLShader* shader, d->shaders)
-        glDetachShader(d->programId, shader->id());
-
-    d->shaders.clear();
-    return true;
-}
-
-#include <stdio.h>
-
-bool QGLShaderProgram::link()
-{
-    Q_D(QGLShaderProgram);
-
-    QGLContext* ctx = d->ctx;
-    if (!ctx)
-        return false;
-    ctx->makeCurrent();
-
-    glLinkProgram(d->programId);
-
-
-    GLint linked;
-    glGetProgramiv(d->programId, GL_LINK_STATUS, &linked);
-
-    if (!linked)
-        return false;
-
-    d->populateVariableLists();
-
-    d->valid = true;
-    return true;
-}
-
-void QGLShaderProgram::use()
-{
-    Q_D(QGLShaderProgram);
-    if (!d->valid)
-        return;
-
-    glUseProgram(d->programId);
-}
-
-
-QString QGLShaderProgram::log()
-{
-    Q_D(QGLShaderProgram);
-
-    QGLContext* ctx = d->ctx;
-    if (!ctx)
-        return QString();
-    ctx->makeCurrent();
-
-    GLint  logSize = -666;
-    glGetProgramiv(d->programId, GL_INFO_LOG_LENGTH, &logSize);
-
-    char* logData = new char[logSize];
-    GLint  logLength;
-
-    glGetProgramInfoLog(d->programId, logSize, &logLength, logData);
-
-    QString result = QString::fromAscii(logData);
-    delete [] logData;
-
-    return result;
-}
-
-GLuint QGLShaderProgram::id()
-{
-    Q_D(QGLShaderProgram);
-    return d->programId;
-}
-
-/////////////////////////////////////////////////////////////////////////
-
-
-
-
-QGLUniform::QGLUniform()
-    : m_id(0), m_type(QGLInvalidType), ctx(0)
-{
-    qWarning("Unknown uniform! Either the uniform doesn't exist or it was removed at shader link");
-}
-
-const QGLUniform& QGLUniform::operator=(const GLfloat& rhs) const
-{
-    if (m_type != QGLFloatType)
-        return *this;
-
-    glUniform1f(m_id, rhs);
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const QGLVec2& rhs) const
-{
-    if (m_type != QGLVec2Type)
-        return *this;
-
-    glUniform2fv(m_id, 1, (const GLfloat*)&rhs);
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const QSizeF& rhs) const
-{
-    if (m_type != QGLVec2Type)
-        return *this;
-
-    glUniform2f(m_id, rhs.width(), rhs.height());
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const QPointF& rhs) const
-{
-    if (m_type != QGLVec2Type)
-        return *this;
-
-    glUniform2f(m_id, rhs.x(), rhs.y());
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const QGLVec3& rhs) const
-{
-    if (m_type != QGLVec3Type)
-        return *this;
-
-    glUniform3fv(m_id, 1, (const GLfloat*)&rhs);
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const QGLVec4& rhs) const
-{
-    if (m_type != QGLVec4Type)
-        return *this;
-
-    glUniform4fv(m_id, 1, (const GLfloat*)&rhs);
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const QColor& rhs) const
-{
-    if (m_type != QGLVec4Type)
-        return *this;
-
-    glUniform4f(m_id, rhs.redF(), rhs.greenF(), rhs.blueF(), rhs.alphaF());
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const GLfloat rhs[2][2]) const
-{
-    if (m_type != QGLMat2Type)
-        return *this;
-
-    glUniformMatrix2fv(m_id, 1, GL_FALSE, (GLfloat*)rhs);
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const GLfloat rhs[3][3]) const
-{
-    if (m_type != QGLMat3Type)
-        return *this;
-
-    glUniformMatrix3fv(m_id, 1, GL_FALSE, (GLfloat*)rhs);
-
-    return *this;
-}
-
-// Transposes ready for GL
-const QGLUniform& QGLUniform::operator=(const QTransform& rhs) const
-{
-    if (m_type != QGLMat3Type)
-        return *this;
-
-    GLfloat mat3[3][3] = {
-        {rhs.m11(), rhs.m12(), rhs.m13()},
-        {rhs.m21(), rhs.m22(), rhs.m23()},
-        {rhs.m31(), rhs.m32(), rhs.m33()}
-    };
-
-    glUniformMatrix3fv(m_id, 1, GL_FALSE, (GLfloat*)mat3);
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const GLfloat rhs[4][4]) const
-{
-    if (m_type != QGLMat4Type)
-        return *this;
-
-    glUniformMatrix4fv(m_id, 1, GL_FALSE, (GLfloat*)rhs);
-
-    return *this;
-}
-
-const QGLUniform& QGLUniform::operator=(const GLuint& rhs) const
-{
-    if ((m_type != QGLSampler2DType) || (m_type != QGLSamplerCubeType))
-        return *this;
-
-    glUniform1i(m_id, rhs);
-
-    return *this;
-}
-
-
-
-
-/////////////////////////////////////////////////////////////////////////
-
-QGLVertexAttribute::QGLVertexAttribute()
-    : m_id(0), m_type(QGLInvalidType), ctx(0)
-{
-    qWarning("Unknown vertex attribute!");
-}
-
-void QGLVertexAttribute::enable() const
-{
-    glEnableVertexAttribArray(m_id);
-}
-
-void QGLVertexAttribute::disable() const
-{
-    glDisableVertexAttribArray(m_id);
-}
-
-// NOTE: Under PC emulation, QGLVec4Type is _always_ returned as the type, so this
-// method isn't very useful. I.e. The datatypes are needed to distinguish the different
-// sizes for the function signatures.
-const QGLVertexAttribute& QGLVertexAttribute::operator=(const GLfloat* rhs) const
-{
-    int size = -1;
-    if (m_type == QGLFloatType)
-        size = 1;
-    else if (m_type == QGLVec2Type)
-        size = 2;
-    else if (m_type == QGLVec3Type)
-        size = 3;
-    else if (m_type == QGLVec4Type)
-        size = 4;
-    else if (m_type == QGLMat2Type) //### Not sure if this is right for matrix attributes...
-        size = 4;
-    else if (m_type == QGLMat3Type) //### Not sure if this is right for matrix attributes...
-        size = 9;
-    else if (m_type == QGLMat4Type) //### Not sure if this is right for matrix attributes...
-        size = 16;
-    else
-        return *this;
-
-    glVertexAttribPointer(m_id, size, GL_FLOAT, GL_FALSE, 0, rhs);
-
-    return *this;
-}
-
-const QGLVertexAttribute& QGLVertexAttribute::operator=(const QGLVec3* rhs) const
-{
-    glVertexAttribPointer(m_id, 3, GL_FLOAT, GL_FALSE, 0, (GLfloat*)rhs);
-
-    return *this;
-}
diff --git a/src/opengl/gl2paintengineex/qglshader_p.h b/src/opengl/gl2paintengineex/qglshader_p.h
deleted file mode 100644
index 1625b84..0000000
--- a/src/opengl/gl2paintengineex/qglshader_p.h
+++ /dev/null
@@ -1,260 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Qt Software Information (qt-info@nokia.com)
-**
-** This file is part of the QtOpenGL module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the either Technology Preview License Agreement or the
-** Beta Release License Agreement.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain
-** additional rights. These rights are described in the Nokia Qt LGPL
-** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
-** package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
-**
-** If you are unsure which license is appropriate for your use, please
-** contact the sales department at qt-sales@nokia.com.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-//
-//  W A R N I N G
-//  -------------
-//
-// This file is not part of the Qt API.  It exists purely as an
-// implementation detail.  This header file may change from version to
-// version without notice, or even be removed.
-//
-// We mean it.
-//
-
-/*
-Uniform Types in OpenGL ES 2.0
-==============================
-GL_FLOAT        GLfloat         GLfloat
-GL_FLOAT_VEC2   QGLVec2         GLfloat[2]
-GL_FLOAT_VEC3   QGLVec3         GLfloat[3]
-GL_FLOAT_VEC4   QGLVec4         GLfloat[4]
-GL_INT          GLint           GLint
-GL_INT_VEC2     QGLIVec2        GLint[2]
-GL_INT_VEC3     QGLIVec3        GLint[3]
-GL_INT_VEC4     QGLIVec4        GLint[4]
-GL_BOOL         GLbool          GLbool
-GL_BOOL_VEC2    QGLBVec2        GLbool[2]
-GL_BOOL_VEC3    QGLBVec3        GLbool[3]
-GL_BOOL_VEC4    QGLBVec4        GLbool[4]
-GL_FLOAT_MAT2   QGLMat2         GLfloat[2][2]
-GL_FLOAT_MAT3   QGLMat3         GLfloat[3][3]
-GL_FLOAT_MAT4   QGLMat4         GLfloat[4][4]
-GL_SAMPLER_2D   QGLSampler2D    GLuint
-GL_SAMPLER_CUBE QGLSamplerCube  GLuint
-
-Additional Types in Desktop OpenGL 2.0
-======================================
-SAMPLER_1D,
-SAMPLER_3D,
-SAMPLER_1D_SHADOW,
-SAMPLER_2D_SHADOW.
-*/
-
-#include <QtOpenGL>
-
-
-typedef struct {
-    GLfloat a;
-    GLfloat b;
-} QGLVec2;
-
-typedef struct {
-    GLfloat a;
-    GLfloat b;
-    GLfloat c;
-} QGLVec3;
-
-typedef struct {
-    GLfloat a;
-    GLfloat b;
-    GLfloat c;
-    GLfloat d;
-} QGLVec4;
-
-
-class QGLShaderProgram;
-
-class QGLShaderPrivate;
-
-class QGLShader : QObject
-{
-    Q_OBJECT
-public:
-    enum ShaderType {VertexShader, FragmentShader};
-
-    QGLShader(ShaderType type, const QGLContext* ctx = 0);
-
-    GLuint id();
-    void clearSource();
-    void addSource(const QLatin1String& newSource);
-    bool compile();
-    bool isValid();
-    QString log();
-    const QGLContext* context(); //maybe make private with prog a friend?
-
-private:
-    QGLShaderPrivate* d_ptr;
-    Q_DECLARE_PRIVATE(QGLShader);
-
-/*
-public slots:
-    void cleanupGLContextRefs(const QGLContext *context);
-*/
-};
-
-
-enum QGLType {
-    QGLInvalidType      = 0,
-    QGLFloatType        = GL_FLOAT,
-    QGLVec2Type         = GL_FLOAT_VEC2,
-    QGLVec3Type         = GL_FLOAT_VEC3,
-    QGLVec4Type         = GL_FLOAT_VEC4,
-    QGLIntType          = GL_INT,
-    QGLIVec2Type        = GL_INT_VEC2,
-    QGLIVec3Type        = GL_INT_VEC3,
-    QGLIVec4Type        = GL_INT_VEC4,
-    QGLBoolType         = GL_BOOL,
-    QGLBVec2Type        = GL_BOOL_VEC2,
-    QGLBVec3Type        = GL_BOOL_VEC3,
-    QGLBVec4Type        = GL_BOOL_VEC4,
-    QGLMat2Type         = GL_FLOAT_MAT2,
-    QGLMat3Type         = GL_FLOAT_MAT3,
-    QGLMat4Type         = GL_FLOAT_MAT4,
-    QGLSampler2DType    = GL_SAMPLER_2D,
-    QGLSamplerCubeType  = GL_SAMPLER_CUBE
-};
-
-class QGLUniform
-{
-public:
-
-    QGLUniform(GLenum glType, GLint location, QGLContext* context)
-        : m_id(location), m_type(QGLType(glType)), ctx(context) {}
-    
-    QGLUniform(); // Called by QMap when there's no match on the name
-
-    QGLType type() const {return m_type;}
-    GLuint  id()   const {return m_id;}
-
-    // Seems odd to be const, but it doesn't actually modify any of the
-    // class members, only the GL state!
-    const QGLUniform& operator=(const GLfloat&) const;
-
-    const QGLUniform& operator=(const QGLVec2&) const;
-    const QGLUniform& operator=(const QSizeF&) const;
-    const QGLUniform& operator=(const QPointF&) const;
-
-    const QGLUniform& operator=(const QGLVec3&) const;
-
-    const QGLUniform& operator=(const QGLVec4&) const;
-    const QGLUniform& operator=(const QColor&) const;
-
-    const QGLUniform& operator=(const GLfloat[2][2]) const;
-
-    const QGLUniform& operator=(const GLfloat[3][3]) const;
-    const QGLUniform& operator=(const QTransform&) const;
-
-    const QGLUniform& operator=(const GLfloat[4][4]) const;
-
-    const QGLUniform& operator=(const GLuint&) const;   // sampler2d, specifying a texture unit
-
-
-protected:
-    GLuint      m_id;
-    QGLType     m_type;
-    QGLContext* ctx;
-};
-
-typedef QMap<QString, QGLUniform> QGLUniformList;
-typedef QMapIterator<QString, QGLUniform> QGLUniformListIterator;
-
-
-class QGLVertexAttribute
-{
-public:
-    QGLVertexAttribute(GLenum glType, GLuint location, QGLContext* context)
-        : m_id(location), m_type(QGLType(glType)), ctx(context) {}
-
-    QGLVertexAttribute(); // Called by QMap when there's no match on the name
-
-    QGLType type() const {return m_type;}
-    GLuint  id()   const {return m_id;}
-    void    enable() const;
-    void    disable() const;
-
-    const QGLVertexAttribute& operator=(const GLfloat* rhs) const;
-    const QGLVertexAttribute& operator=(const QGLVec3* rhs) const;
-
-protected:
-    GLuint        m_id;
-    QGLType       m_type;
-    QGLContext*   ctx;
-};
-
-//TODO: Convert into setter overloads on QGLShaderProgram
-typedef QMap<QString, QGLVertexAttribute> QGLVertexAttributeList;
-typedef QMapIterator<QString, QGLVertexAttribute> QGLVertexAttributeListIterator;
-
-
-
-class QGLShaderProgramPrivate;
-
-class QGLShaderProgram : QObject
-{
-    Q_OBJECT
-public:
-    QGLShaderProgram(const QGLContext* ctx = 0);
-
-    const QGLUniformList &          uniforms();
-    const QGLVertexAttributeList&   vertexAttributes();
-
-    bool addShader(QGLShader* newShader);
-    bool removeShader(QGLShader* oldShader);
-    bool removeAllShaders();
-
-    bool link();
-    QString log();
-    bool isValid();
-    void use();
-
-    GLuint id();
-
-private:
-    QGLShaderProgramPrivate* d_ptr;
-    Q_DECLARE_PRIVATE(QGLShaderProgram);
-
-/*
-public slots:
-    void cleanupGLContextRefs(const QGLContext *context);
-*/
-};
-
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index beb4da6..19cb02a 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -62,7 +62,6 @@
     and use the correct program when we really need it.
 */
 
-
 #include "qpaintengineex_opengl2_p.h"
 
 #include <string.h> //for memcpy
@@ -77,93 +76,167 @@
 #include <private/qtextureglyphcache_p.h>
 
 #include "qglgradientcache_p.h"
-#include "qglpexshadermanager_p.h"
+#include "qglengineshadermanager_p.h"
 #include "qgl2pexvertexarray_p.h"
 
+#include <QDebug>
 
-extern QImage qt_imageForBrush(int brushStyle, bool invert); //in qbrush.cpp
+QT_BEGIN_NAMESPACE
 
+static const GLuint QT_BRUSH_TEXTURE_UNIT       = 0;
+static const GLuint QT_IMAGE_TEXTURE_UNIT       = 0; //Can be the same as brush texture unit
+static const GLuint QT_MASK_TEXTURE_UNIT        = 1;
+static const GLuint QT_BACKGROUND_TEXTURE_UNIT  = 2;
 
-#include <QDebug>
+class QGLTextureGlyphCache : public QTextureGlyphCache
+{
+public:
+    QGLTextureGlyphCache(QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix);
+    ~QGLTextureGlyphCache();
+
+    virtual void createTextureData(int width, int height);
+    virtual void resizeTextureData(int width, int height);
+    virtual void fillTexture(const Coord &c, glyph_t glyph);
+
+    inline GLuint texture() const { return m_texture; }
+
+    inline int width() const { return m_width; }
+    inline int height() const { return m_height; }
+
+    inline void setPaintEnginePrivate(QGL2PaintEngineExPrivate *p) { pex = p; }
+
+private:
+    QGLContext *ctx;
 
+    QGL2PaintEngineExPrivate *pex;
 
-static const GLuint QT_VERTEX_COORDS_ATTR  = 0;
-static const GLuint QT_TEXTURE_COORDS_ATTR = 1;
-static const GLuint QT_BRUSH_TEXTURE_UNIT  = 0;
+    GLuint m_texture;
+    GLuint m_fbo;
 
-class QGL2PaintEngineExPrivate : public QPaintEngineExPrivate
+    int m_width;
+    int m_height;
+
+    QGLShaderProgram *m_program;
+};
+
+QGLTextureGlyphCache::QGLTextureGlyphCache(QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix)
+    : QTextureGlyphCache(type, matrix)
+    , ctx(context)
+    , m_width(0)
+    , m_height(0)
 {
-    Q_DECLARE_PUBLIC(QGL2PaintEngineEx)
-public:
-    QGL2PaintEngineExPrivate(QGL2PaintEngineEx *q_ptr) :
-            q(q_ptr),
-            width(0), height(0),
-            ctx(0),
-            currentBrush( &(q->state()->brush) ),
-            inverseScale(1),
-            shaderManager(0)
-    { }
+    glGenFramebuffers(1, &m_fbo);
+}
+
+QGLTextureGlyphCache::~QGLTextureGlyphCache()
+{
+    glDeleteFramebuffers(1, &m_fbo);
+
+    if (m_width || m_height)
+        glDeleteTextures(1, &m_texture);
+}
 
-    ~QGL2PaintEngineExPrivate();
+void QGLTextureGlyphCache::createTextureData(int width, int height)
+{
+    glGenTextures(1, &m_texture);
+    glBindTexture(GL_TEXTURE_2D, m_texture);
 
-    void updateBrushTexture();
-    void updateBrushUniforms();
-    void updateMatrix();
-    void updateCompositionMode();
-    void updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform);
+    m_width = width;
+    m_height = height;
 
-    void setBrush(const QBrush* brush);
+    QVarLengthArray<uchar> data(width * height);
+    for (int i = 0; i < width * height; ++i)
+        data[i] = 0;
 
-    void drawTexture(const QGLRect& dest, const QGLRect& src, int txtWidth, int txtHeight);
+    if (m_type == QFontEngineGlyphCache::Raster_RGBMask)
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]);
+    else
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]);
 
-    void fill(const QVectorPath &path);
-    void drawOutline(const QVectorPath& path);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+}
+
+void QGLTextureGlyphCache::resizeTextureData(int width, int height)
+{
+    // ### the QTextureGlyphCache API needs to be reworked to allow
+    // ### resizeTextureData to fail
 
-    void drawVertexArrays(QGL2PEXVertexArray& vertexArray, GLenum primitive);
-        // ^ draws whatever is in the vertex array
-    void composite(const QGLRect& boundingRect);
-        // ^ Composites the bounding rect onto dest buffer
-    void fillStencilWithVertexArray(QGL2PEXVertexArray& vertexArray, bool useWindingFill);
-        // ^ Calls drawVertexArrays to render into stencil buffer
-    void cleanStencilBuffer(const QGLRect& area);
+    int oldWidth = m_width;
+    int oldHeight = m_height;
 
-    void prepareForDraw();
+    GLuint oldTexture = m_texture;
+    createTextureData(width, height);
 
-    inline void useSimpleShader();
-    inline QColor premultiplyColor(QColor c, GLfloat opacity);
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, m_fbo);
 
-    QGL2PaintEngineEx* q;
+    GLuint colorBuffer;
+    glGenRenderbuffers(1, &colorBuffer);
+    glBindRenderbuffer(GL_RENDERBUFFER_EXT, colorBuffer);
+    glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_RGBA, oldWidth, oldHeight);
+    glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                              GL_RENDERBUFFER_EXT, colorBuffer);
+    glBindRenderbuffer(GL_RENDERBUFFER_EXT, 0);
 
-    //### Move into QGLDrawable
-    int width, height;
-    QGLContext* ctx;
+    glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
+    glBindTexture(GL_TEXTURE_2D, oldTexture);
 
-    // Dirty flags
-    bool matrixDirty; // Implies matrix uniforms are also dirty
-    bool compositionModeDirty;
-    bool brushTextureDirty;
-    bool brushUniformsDirty;
-    bool simpleShaderMatrixUniformDirty;
-    bool brushShaderMatrixUniformDirty;
-    bool imageShaderMatrixUniformDirty;
-    bool textShaderMatrixUniformDirty;
-    bool stencilBuferDirty;
+    pex->transferMode(BrushDrawingMode);
 
-    const QBrush*    currentBrush; // May not be the state's brush!
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_SCISSOR_TEST);
 
-    GLfloat     inverseScale;
+    glViewport(0, 0, oldWidth, oldHeight);
 
-    QGL2PEXVertexArray pathVertexArray;
+    float vertexCoordinateArray[] = { -1, -1, 1, -1, 1, 1, -1, 1 };
+    float textureCoordinateArray[] = { 0, 0, 1, 0, 1, 1, 0, 1 };
 
-    GLfloat pmvMatrix[4][4];
+    glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
 
-    QGLPEXShaderManager* shaderManager;
+    glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray);
+    glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray);
 
-    // Clipping & state stuff stolen from QOpenGLPaintEngine:
-    void updateDepthClip();
-    uint use_system_clip : 1;
-};
+    pex->shaderManager->blitProgram()->enable();
+    pex->shaderManager->blitProgram()->setUniformValue("imageTexture", QT_IMAGE_TEXTURE_UNIT);
+    pex->shaderManager->setDirty();
 
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+    glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
+
+    glBindTexture(GL_TEXTURE_2D, m_texture);
+    glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, oldWidth, oldHeight);
+
+    glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                              GL_RENDERBUFFER_EXT, 0);
+    glDeleteRenderbuffers(1, &colorBuffer);
+    glDeleteTextures(1, &oldTexture);
+
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+
+    glViewport(0, 0, pex->width, pex->height);
+    pex->updateDepthScissorTest();
+}
+
+void QGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph)
+{
+    QImage mask = textureMapForGlyph(glyph);
+
+    const uint maskWidth = mask.width();
+    const uint maskHeight = mask.height();
+
+    glBindTexture(GL_TEXTURE_2D, m_texture);
+    if (mask.format() == QImage::Format_RGB32) {
+        glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, m_height - c.y, maskWidth, maskHeight, GL_BGRA, GL_UNSIGNED_BYTE, mask.bits());
+    } else {
+        mask = mask.convertToFormat(QImage::Format_Indexed8);
+        glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_ALPHA, GL_UNSIGNED_BYTE, mask.bits());
+    }
+}
+
+extern QImage qt_imageForBrush(int brushStyle, bool invert);
 
 ////////////////////////////////// Private Methods //////////////////////////////////////////
 
@@ -177,7 +250,7 @@ QGL2PaintEngineExPrivate::~QGL2PaintEngineExPrivate()
 
 void QGL2PaintEngineExPrivate::updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform)
 {
-    glActiveTexture(QT_BRUSH_TEXTURE_UNIT);
+//    glActiveTexture(GL_TEXTURE0 + QT_BRUSH_TEXTURE_UNIT); //### Is it always this texture unit?
 
     if (smoothPixmapTransform) {
         glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
@@ -193,11 +266,11 @@ void QGL2PaintEngineExPrivate::updateTextureFilter(GLenum target, GLenum wrapMod
 
 QColor QGL2PaintEngineExPrivate::premultiplyColor(QColor c, GLfloat opacity)
 {
-    uint alpha = qRound(c.alpha() * opacity);
-    return QColor ( ((c.red() * alpha + 128) >> 8),
-                    ((c.green() * alpha + 128) >> 8),
-                    ((c.blue() * alpha + 128) >> 8),
-                    alpha);
+    qreal alpha = c.alphaF() * opacity;
+    c.setRedF(c.redF() * alpha);
+    c.setGreenF(c.greenF() * alpha);
+    c.setBlueF(c.blueF() * alpha);
+    return c;
 }
 
 
@@ -206,27 +279,39 @@ void QGL2PaintEngineExPrivate::setBrush(const QBrush* brush)
     currentBrush = brush;
     brushTextureDirty = true;
     brushUniformsDirty = true;
-    shaderManager->setBrushStyle(currentBrush->style());
-    shaderManager->setAffineOnlyBrushTransform(currentBrush->transform().isAffine());
+    if (currentBrush->style() == Qt::TexturePattern
+        && qHasPixmapTexture(*brush) && brush->texture().isQBitmap())
+    {
+        shaderManager->setSrcPixelType(QGLEngineShaderManager::TextureSrcWithPattern);
+    } else {
+        shaderManager->setSrcPixelType(currentBrush->style());
+    }
+    shaderManager->optimiseForBrushTransform(currentBrush->transform());
 }
 
 
 // Unless this gets used elsewhere, it's probably best to merge it into fillStencilWithVertexArray
 void QGL2PaintEngineExPrivate::useSimpleShader()
 {
-    shaderManager->simpleShader()->use();
+    shaderManager->simpleProgram()->enable();
+    shaderManager->setDirty();
 
     if (matrixDirty)
         updateMatrix();
 
     if (simpleShaderMatrixUniformDirty) {
-        shaderManager->simpleShader()->uniforms()[QLatin1String("pmvMatrix")] = pmvMatrix;
+        shaderManager->simpleProgram()->setUniformValue("pmvMatrix", pmvMatrix);
         simpleShaderMatrixUniformDirty = false;
     }
+
+    if (simpleShaderDepthUniformDirty) {
+        shaderManager->simpleProgram()->setUniformValue("depth", (GLfloat)q->state()->currentDepth);
+        simpleShaderDepthUniformDirty = false;
+    }
 }
 
 
-Q_GLOBAL_STATIC(QGLGradientCache, qt_opengl_gradient_cache)
+Q_GLOBAL_STATIC(QGL2GradientCache, qt_opengl_gradient_cache)
 
 void QGL2PaintEngineExPrivate::updateBrushTexture()
 {
@@ -235,9 +320,9 @@ void QGL2PaintEngineExPrivate::updateBrushTexture()
 
     if ( (style >= Qt::Dense1Pattern) && (style <= Qt::DiagCrossPattern) ) {
         // Get the image data for the pattern
-        QImage texImage = qt_imageForBrush(style, true);
+        QImage texImage = qt_imageForBrush(style, false);
 
-        glActiveTexture(QT_BRUSH_TEXTURE_UNIT);
+        glActiveTexture(GL_TEXTURE0 + QT_BRUSH_TEXTURE_UNIT);
         ctx->d_func()->bindTexture(texImage, GL_TEXTURE_2D, GL_RGBA, true);
         updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, true);
     }
@@ -257,12 +342,13 @@ void QGL2PaintEngineExPrivate::updateBrushTexture()
         else
             updateTextureFilter(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE, true);
 
+        glActiveTexture(GL_TEXTURE0 + QT_BRUSH_TEXTURE_UNIT);
         glBindTexture(GL_TEXTURE_2D, texId);
     }
     else if (style == Qt::TexturePattern) {
         const QPixmap& texPixmap = currentBrush->texture();
 
-        glActiveTexture(QT_BRUSH_TEXTURE_UNIT);
+        glActiveTexture(GL_TEXTURE0 + QT_BRUSH_TEXTURE_UNIT);
         ctx->d_func()->bindTexture(texPixmap, GL_TEXTURE_2D, GL_RGBA, true);
         updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, true);
     }
@@ -278,17 +364,11 @@ void QGL2PaintEngineExPrivate::updateBrushUniforms()
     if (style == Qt::NoBrush)
         return;
 
-    GLfloat opacity = 1.0;
-    if (q->state()->opacity < 0.99f)
-        opacity = (GLfloat)q->state()->opacity;
-    bool setOpacity = true;
-
     QTransform brushQTransform = currentBrush->transform();
 
     if (style == Qt::SolidPattern) {
-        QColor col = premultiplyColor(currentBrush->color(), opacity);
-        shaderManager->brushShader()->uniforms()[QLatin1String("fragmentColor")] = col;
-        setOpacity = false;
+        QColor col = premultiplyColor(currentBrush->color(), (GLfloat)q->state()->opacity);
+        shaderManager->currentProgram()->setUniformValue("fragmentColor", col);
     }
     else {
         // All other brushes have a transform and thus need the translation point:
@@ -297,13 +377,12 @@ void QGL2PaintEngineExPrivate::updateBrushUniforms()
         if (style <= Qt::DiagCrossPattern) {
             translationPoint = q->state()->brushOrigin;
 
-            QColor col = premultiplyColor(currentBrush->color(), opacity);
+            QColor col = premultiplyColor(currentBrush->color(), (GLfloat)q->state()->opacity);
 
-            shaderManager->brushShader()->uniforms()[QLatin1String("patternColor")] = col;
-            setOpacity = false; //So code below doesn't try to set the opacity uniform
+            shaderManager->currentProgram()->setUniformValue("patternColor", col);
 
-            QGLVec2 halfViewportSize = { width*0.5, height*0.5 };
-            shaderManager->brushShader()->uniforms()[QLatin1String("halfViewportSize")] = halfViewportSize;
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue("halfViewportSize", halfViewportSize);
         }
         else if (style == Qt::LinearGradientPattern) {
             const QLinearGradient *g = static_cast<const QLinearGradient *>(currentBrush->gradient());
@@ -314,17 +393,16 @@ void QGL2PaintEngineExPrivate::updateBrushUniforms()
 
             QPointF l = realFinal - realStart;
 
-            // ###
-            QGLVec3 linearData = {
+            QVector3D linearData(
                 l.x(),
                 l.y(),
                 1.0f / (l.x() * l.x() + l.y() * l.y())
-            };
+            );
 
-            shaderManager->brushShader()->uniforms()[QLatin1String("linearData")] = linearData;
+            shaderManager->currentProgram()->setUniformValue("linearData", linearData);
 
-            QGLVec2 halfViewportSize = { width*0.5, height*0.5 };
-            shaderManager->brushShader()->uniforms()[QLatin1String("halfViewportSize")] = halfViewportSize;
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue("halfViewportSize", halfViewportSize);
         }
         else if (style == Qt::ConicalGradientPattern) {
             const QConicalGradient *g = static_cast<const QConicalGradient *>(currentBrush->gradient());
@@ -332,10 +410,10 @@ void QGL2PaintEngineExPrivate::updateBrushUniforms()
 
             GLfloat angle = -(g->angle() * 2 * Q_PI) / 360.0;
 
-            shaderManager->brushShader()->uniforms()[QLatin1String("angle")] = angle;
+            shaderManager->currentProgram()->setUniformValue("angle", angle);
 
-            QGLVec2 halfViewportSize = { width*0.5, height*0.5 };
-            shaderManager->brushShader()->uniforms()[QLatin1String("halfViewportSize")] = halfViewportSize;
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue("halfViewportSize", halfViewportSize);
         }
         else if (style == Qt::RadialGradientPattern) {
             const QRadialGradient *g = static_cast<const QRadialGradient *>(currentBrush->gradient());
@@ -345,27 +423,31 @@ void QGL2PaintEngineExPrivate::updateBrushUniforms()
             translationPoint   = realFocal;
 
             QPointF fmp = realCenter - realFocal;
-            shaderManager->brushShader()->uniforms()[QLatin1String("fmp")] = fmp;
+            shaderManager->currentProgram()->setUniformValue("fmp", fmp);
 
             GLfloat fmp2_m_radius2 = -fmp.x() * fmp.x() - fmp.y() * fmp.y() + realRadius*realRadius;
-            shaderManager->brushShader()->uniforms()[QLatin1String("fmp2_m_radius2")] = fmp2_m_radius2;
-
-            shaderManager->brushShader()->uniforms()[QLatin1String("inverse_2_fmp2_m_radius2")] =
-                                                        GLfloat(1.0 / (2.0*fmp2_m_radius2));
+            shaderManager->currentProgram()->setUniformValue("fmp2_m_radius2", fmp2_m_radius2);
+            shaderManager->currentProgram()->setUniformValue("inverse_2_fmp2_m_radius2",
+                                                             GLfloat(1.0 / (2.0*fmp2_m_radius2)));
 
-            QGLVec2 halfViewportSize = { width*0.5, height*0.5 };
-            shaderManager->brushShader()->uniforms()[QLatin1String("halfViewportSize")] = halfViewportSize;
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue("halfViewportSize", halfViewportSize);
         }
         else if (style == Qt::TexturePattern) {
             translationPoint = q->state()->brushOrigin;
 
             const QPixmap& texPixmap = currentBrush->texture();
 
+            if (qHasPixmapTexture(*currentBrush) && currentBrush->texture().isQBitmap()) {
+                QColor col = premultiplyColor(currentBrush->color(), (GLfloat)q->state()->opacity);
+                shaderManager->currentProgram()->setUniformValue("patternColor", col);
+            }
+
             QSizeF invertedTextureSize( 1.0 / texPixmap.width(), 1.0 / texPixmap.height() );
-            shaderManager->brushShader()->uniforms()[QLatin1String("invertedTextureSize")] = invertedTextureSize;
+            shaderManager->currentProgram()->setUniformValue("invertedTextureSize", invertedTextureSize);
 
-            QGLVec2 halfViewportSize = { width*0.5, height*0.5 };
-            shaderManager->brushShader()->uniforms()[QLatin1String("halfViewportSize")] = halfViewportSize;
+            QVector2D halfViewportSize(width*0.5, height*0.5);
+            shaderManager->currentProgram()->setUniformValue("halfViewportSize", halfViewportSize);
         }
         else
             qWarning("QGL2PaintEngineEx: Unimplemented fill style");
@@ -374,11 +456,8 @@ void QGL2PaintEngineExPrivate::updateBrushUniforms()
         QTransform gl_to_qt(1, 0, 0, -1, 0, height);
         QTransform inv_matrix = gl_to_qt * (brushQTransform * q->state()->matrix).inverted() * translate;
 
-        shaderManager->brushShader()->uniforms()[QLatin1String("brushTransform")] = inv_matrix;
-        shaderManager->brushShader()->uniforms()[QLatin1String("brushTexture")] = QT_BRUSH_TEXTURE_UNIT;
-
-        if (setOpacity)
-            shaderManager->brushShader()->uniforms()[QLatin1String("opacity")] = opacity;
+        shaderManager->currentProgram()->setUniformValue("brushTransform", inv_matrix);
+        shaderManager->currentProgram()->setUniformValue("brushTexture", QT_BRUSH_TEXTURE_UNIT);
     }
     brushUniformsDirty = false;
 }
@@ -397,38 +476,51 @@ void QGL2PaintEngineExPrivate::updateMatrix()
         {0.0,        0.0,        0.0,  1.0}
     };
 
-    // Use the (3x3) transform for the Model~View matrix:
     const QTransform& transform = q->state()->matrix;
-    GLfloat MV[4][4] = {
-        {transform.m11(), transform.m21(), 0.0, transform.dx() + 0.5},
-        {transform.m12(), transform.m22(), 0.0, transform.dy() + 0.5},
-        {0.0,             0.0,             1.0, 0.0},
-        {transform.m13(), transform.m23(), 0.0, transform.m33()}
-    };
 
-    // NOTE: OpenGL ES works with column-major matrices, so when we multiply the matrices,
-    //       we also transpose them ready for GL.
-    for (int row = 0; row < 4; ++row) {
-        for (int col = 0; col < 4; ++col) {
-            pmvMatrix[col][row] = 0.0;
-            for (int n = 0; n < 4; ++n)
-                pmvMatrix[col][row] += P[row][n] * MV[n][col];
+    if (mode == TextDrawingMode) {
+        // Text drawing mode is only used for non-scaling transforms
+        for (int row = 0; row < 4; ++row)
+            for (int col = 0; col < 4; ++col)
+                pmvMatrix[col][row] = P[row][col];
+
+        pmvMatrix[3][0] += P[0][0] * qRound(transform.dx());
+        pmvMatrix[3][1] += P[1][1] * qRound(transform.dy());
+
+        inverseScale = 1;
+    } else {
+        // Use the (3x3) transform for the Model~View matrix:
+        GLfloat MV[4][4] = {
+            {transform.m11(), transform.m21(), 0.0, transform.dx()},
+            {transform.m12(), transform.m22(), 0.0, transform.dy()},
+            {0.0,             0.0,             1.0, 0.0},
+            {transform.m13(), transform.m23(), 0.0, transform.m33()}
+        };
+
+        // NOTE: OpenGL ES works with column-major matrices, so when we multiply the matrices,
+        //       we also transpose them ready for GL.
+        for (int row = 0; row < 4; ++row) {
+            for (int col = 0; col < 4; ++col) {
+                pmvMatrix[col][row] = 0.0;
+
+                // P[row][n] is 0.0 for n < row
+                for (int n = row; n < 4; ++n)
+                    pmvMatrix[col][row] += P[row][n] * MV[n][col];
+            }
         }
-    }
 
-    // 1/10000 == 0.0001, so we have good enough res to cover curves
-    // that span the entire widget...
-    inverseScale = qMax(1 / qMax( qMax(qAbs(transform.m11()), qAbs(transform.m22())),
-                                  qMax(qAbs(transform.m12()), qAbs(transform.m21())) ),
-                        qreal(0.0001));
+        // 1/10000 == 0.0001, so we have good enough res to cover curves
+        // that span the entire widget...
+        inverseScale = qMax(1 / qMax( qMax(qAbs(transform.m11()), qAbs(transform.m22())),
+                    qMax(qAbs(transform.m12()), qAbs(transform.m21())) ),
+                qreal(0.0001));
+    }
 
     matrixDirty = false;
 
     // The actual data has been updated so both shader program's uniforms need updating
     simpleShaderMatrixUniformDirty = true;
-    brushShaderMatrixUniformDirty = true;
-    imageShaderMatrixUniformDirty = true;
-    textShaderMatrixUniformDirty = true;
+    shaderMatrixUniformDirty = true;
 }
 
 
@@ -485,120 +577,185 @@ void QGL2PaintEngineExPrivate::updateCompositionMode()
     compositionModeDirty = false;
 }
 
+static inline void setCoords(GLfloat *coords, const QGLRect &rect)
+{
+    coords[0] = rect.left;
+    coords[1] = rect.top;
+    coords[2] = rect.right;
+    coords[3] = rect.top;
+    coords[4] = rect.right;
+    coords[5] = rect.bottom;
+    coords[6] = rect.left;
+    coords[7] = rect.bottom;
+}
 
-void QGL2PaintEngineExPrivate::drawTexture(const QGLRect& dest, const QGLRect& src, int txtWidth, int txtHeight)
+void QGL2PaintEngineExPrivate::drawTexture(const QGLRect& dest, const QGLRect& src, const QSize &textureSize, bool opaque, bool pattern)
 {
-//     qDebug("QGL2PaintEngineExPrivate::drawImage()");
+    transferMode(ImageDrawingMode);
 
-    // We have a shader specifically for drawPixmap/drawImage...
-    shaderManager->imageShader()->use();
+    updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, q->state()->renderHints & QPainter::SmoothPixmapTransform);
 
-    updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, false);
+    // Setup for texture drawing
+    shaderManager->setSrcPixelType(pattern ? QGLEngineShaderManager::PatternSrc : QGLEngineShaderManager::ImageSrc);
+    shaderManager->setTextureCoordsEnabled(true);
+    prepareForDraw(opaque);
 
-    if (compositionModeDirty)
-        updateCompositionMode();
+    if (pattern) {
+        QColor col = premultiplyColor(q->state()->pen.color(), (GLfloat)q->state()->opacity);
+        shaderManager->currentProgram()->setUniformValue("patternColor", col);
+    }
 
-    if (matrixDirty)
-        updateMatrix();
+    shaderManager->currentProgram()->setUniformValue("imageTexture", QT_IMAGE_TEXTURE_UNIT);
 
-    if (imageShaderMatrixUniformDirty) {
-        shaderManager->imageShader()->uniforms()[QLatin1String("pmvMatrix")] = pmvMatrix;
-        imageShaderMatrixUniformDirty = false;
-    }
+    GLfloat dx = 1.0 / textureSize.width();
+    GLfloat dy = 1.0 / textureSize.height();
 
-    shaderManager->imageShader()->uniforms()[QLatin1String("textureSampler")] = QT_BRUSH_TEXTURE_UNIT;
+    QGLRect srcTextureRect(src.left*dx, 1.0 - src.top*dy, src.right*dx, 1.0 - src.bottom*dy);
 
-//    if (q->state()->opacity < 0.99f)
-        shaderManager->imageShader()->uniforms()[QLatin1String("opacity")] = (GLfloat)q->state()->opacity;
+    setCoords(staticVertexCoordinateArray, dest);
+    setCoords(staticTextureCoordinateArray, srcTextureRect);
 
-    GLfloat vertexCoords[] = {
-        dest.left,  dest.top,
-        dest.left,  dest.bottom,
-        dest.right, dest.bottom,
-        dest.right, dest.top
-    };
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+}
 
-    glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
-    glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoords);
+void QGL2PaintEngineEx::sync()
+{
+    Q_D(QGL2PaintEngineEx);
+    ensureActive();
+    d->transferMode(BrushDrawingMode);
 
-    GLfloat dx = 1.0 / txtWidth;
-    GLfloat dy = 1.0 / txtHeight;
+    QGLContext *ctx = d->ctx;
+    glUseProgram(0);
 
-    QGLRect srcTextureRect(src.left*dx, 1.0 - src.top*dy, src.right*dx, 1.0 - src.bottom*dy);
+#ifndef QT_OPENGL_ES_2
+    // be nice to people who mix OpenGL 1.x code with QPainter commands
+    // by setting modelview and projection matrices to mirror the GL 1
+    // paint engine
+    const QTransform& mtx = state()->matrix;
 
-    GLfloat textureCoords[] = {
-        srcTextureRect.left,  srcTextureRect.top,
-        srcTextureRect.left,  srcTextureRect.bottom,
-        srcTextureRect.right, srcTextureRect.bottom,
-        srcTextureRect.right, srcTextureRect.top
+    float mv_matrix[4][4] =
+    {
+        { mtx.m11(), mtx.m12(),     0, mtx.m13() },
+        { mtx.m21(), mtx.m22(),     0, mtx.m23() },
+        {         0,         0,     1,         0 },
+        {  mtx.dx(),  mtx.dy(),     0, mtx.m33() }
     };
 
-    glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
-    glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoords);
+    const QSize sz = d->drawable.size();
 
-    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(0, sz.width(), sz.height(), 0, -999999, 999999);
 
-    glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
-    glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    glMatrixMode(GL_MODELVIEW);
+    glLoadMatrixf(&mv_matrix[0][0]);
+#endif
+
+    glDisable(GL_BLEND);
+    glActiveTexture(GL_TEXTURE0);
 }
 
+void QGL2PaintEngineExPrivate::transferMode(EngineMode newMode)
+{
+    if (newMode == mode)
+        return;
+
+    if (mode == TextDrawingMode || mode == ImageDrawingMode) {
+        glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
+        glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    }
+
+    if (mode == TextDrawingMode)
+        matrixDirty = true;
+
+    if (newMode == TextDrawingMode) {
+        glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+        glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
+
+        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray.data());
+        glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray.data());
+
+        matrixDirty = true;
+    }
+
+    if (newMode == ImageDrawingMode) {
+        glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+        glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
+
+        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, staticVertexCoordinateArray);
+        glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, staticTextureCoordinateArray);
+    }
+
+    // This needs to change when we implement high-quality anti-aliasing...
+    if (newMode != TextDrawingMode)
+        shaderManager->setMaskType(QGLEngineShaderManager::NoMask);
+
+    mode = newMode;
+}
 
 void QGL2PaintEngineExPrivate::drawOutline(const QVectorPath& path)
 {
-//     qDebug("QGL2PaintEngineExPrivate::drawOutline()");
+    transferMode(BrushDrawingMode);
+
+    // Might need to call updateMatrix to re-calculate inverseScale
     if (matrixDirty)
         updateMatrix();
 
-    pathVertexArray.clear();
-    pathVertexArray.addPath(path, inverseScale);
+    vertexCoordinateArray.clear();
+    vertexCoordinateArray.addPath(path, inverseScale);
 
     if (path.hasImplicitClose()) {
         // Close the path's outline
-        pathVertexArray.lineToArray(path.points()[0], path.points()[1]);
-        pathVertexArray.stops().last() += 1;
+        vertexCoordinateArray.lineToArray(path.points()[0], path.points()[1]);
+        vertexCoordinateArray.stops().last() += 1;
     }
 
-    prepareForDraw();
-    drawVertexArrays(pathVertexArray, GL_LINE_STRIP);
+    prepareForDraw(currentBrush->isOpaque());
+    drawVertexArrays(vertexCoordinateArray, GL_LINE_STRIP);
 }
 
 
 // Assumes everything is configured for the brush you want to use
 void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
 {
+    transferMode(BrushDrawingMode);
+
+    // Might need to call updateMatrix to re-calculate inverseScale
     if (matrixDirty)
         updateMatrix();
 
     const QPointF* const points = reinterpret_cast<const QPointF*>(path.points());
 
-
     // Check to see if there's any hints
     if (path.shape() == QVectorPath::RectangleHint) {
         QGLRect rect(points[0].x(), points[0].y(), points[2].x(), points[2].y());
-        prepareForDraw();
+        prepareForDraw(currentBrush->isOpaque());
+
         composite(rect);
     }
     else if (path.shape() == QVectorPath::EllipseHint) {
-        pathVertexArray.clear();
-        pathVertexArray.addPath(path, inverseScale);
-        prepareForDraw();
-        drawVertexArrays(pathVertexArray, GL_TRIANGLE_FAN);
+        vertexCoordinateArray.clear();
+        vertexCoordinateArray.addPath(path, inverseScale);
+        prepareForDraw(currentBrush->isOpaque());
+        drawVertexArrays(vertexCoordinateArray, GL_TRIANGLE_FAN);
     }
     else {
         // The path is too complicated & needs the stencil technique
-        pathVertexArray.clear();
-        pathVertexArray.addPath(path, inverseScale);
+        vertexCoordinateArray.clear();
+        vertexCoordinateArray.addPath(path, inverseScale);
 
-        fillStencilWithVertexArray(pathVertexArray, path.hasWindingFill());
+        fillStencilWithVertexArray(vertexCoordinateArray, path.hasWindingFill());
 
         // Stencil the brush onto the dest buffer
         glStencilFunc(GL_NOTEQUAL, 0, 0xFFFF); // Pass if stencil buff value != 0
+        glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
+
         glEnable(GL_STENCIL_TEST);
-        prepareForDraw();
-        composite(pathVertexArray.boundingRect());
+        prepareForDraw(currentBrush->isOpaque());
+        composite(vertexCoordinateArray.boundingRect());
         glDisable(GL_STENCIL_TEST);
 
-        cleanStencilBuffer(pathVertexArray.boundingRect());
+        glStencilMask(0);
     }
 }
 
@@ -606,17 +763,17 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
 void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(QGL2PEXVertexArray& vertexArray, bool useWindingFill)
 {
 //     qDebug("QGL2PaintEngineExPrivate::fillStencilWithVertexArray()");
-    if (stencilBuferDirty) {
+    glStencilMask(0xFFFF); // Enable stencil writes
+
+    if (stencilBufferDirty) {
         // Clear the stencil buffer to zeros
         glDisable(GL_STENCIL_TEST);
-        glStencilMask(0xFFFF); // Enable writing to stencil buffer, otherwise glClear wont do anything.
         glClearStencil(0); // Clear to zero
         glClear(GL_STENCIL_BUFFER_BIT);
-        stencilBuferDirty = false;
+        stencilBufferDirty = false;
     }
 
     glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); // Disable color writes
-    glStencilMask(0xFFFF); // Enable stencil writes
     glStencilFunc(GL_ALWAYS, 0, 0xFFFF); // Always pass the stencil test
 
     // Setup the stencil op:
@@ -626,7 +783,7 @@ void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(QGL2PEXVertexArray& ve
     } else
         glStencilOp(GL_KEEP, GL_KEEP, GL_INVERT); // Simply invert the stencil bit
 
-    // No point in using a fancy gradiant shader for writing into the stencil buffer!
+    // No point in using a fancy gradient shader for writing into the stencil buffer!
     useSimpleShader();
 
     glEnable(GL_STENCIL_TEST); // For some reason, this has to happen _after_ the simple shader is use()'d
@@ -637,69 +794,62 @@ void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(QGL2PEXVertexArray& ve
 
     // Enable color writes & disable stencil writes
     glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
-    glStencilMask(0);
 }
 
-void QGL2PaintEngineExPrivate::cleanStencilBuffer(const QGLRect& area)
+void QGL2PaintEngineExPrivate::prepareForDraw(bool srcPixelsAreOpaque)
 {
-//     qDebug("QGL2PaintEngineExPrivate::cleanStencilBuffer()");
-    useSimpleShader();
-
-    GLfloat rectVerts[] = {
-        area.left,  area.top,
-        area.left,  area.bottom,
-        area.right, area.bottom,
-        area.right, area.top
-    };
-
-    glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
-    glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, rectVerts);
-
-    glEnable(GL_STENCIL_TEST);
-    glStencilFunc(GL_ALWAYS, 0, 0xFFFF); // Always pass the stencil test
-
-    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); // Disable color writes
-    glStencilMask(0xFFFF); // Enable writing to stencil buffer
-    glStencilOp(GL_ZERO, GL_ZERO, GL_ZERO); // Write 0's to stencil buffer
+    if (brushTextureDirty && mode != ImageDrawingMode)
+        updateBrushTexture();
 
-    glDisable(GL_BLEND);
+    if (compositionModeDirty)
+        updateCompositionMode();
 
-    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    if (matrixDirty)
+        updateMatrix();
 
-    glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    const bool stateHasOpacity = q->state()->opacity < 0.99f;
+    if (q->state()->compositionMode() == QPainter::CompositionMode_Source
+        || (q->state()->compositionMode() == QPainter::CompositionMode_SourceOver
+            && srcPixelsAreOpaque && !stateHasOpacity))
+        glDisable(GL_BLEND);
+    else
+        glEnable(GL_BLEND);
 
-    // Enable color writes & disable stencil writes
-    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
-    glStencilMask(0);
-    glDisable(GL_STENCIL_TEST);
-}
+    bool useGlobalOpacityUniform = stateHasOpacity;
+    if (stateHasOpacity && (mode != ImageDrawingMode)) {
+        // Using a brush
+        bool brushIsPattern = (currentBrush->style() >= Qt::Dense1Pattern) &&
+                              (currentBrush->style() <= Qt::DiagCrossPattern);
 
-void QGL2PaintEngineExPrivate::prepareForDraw()
-{
-    if (brushTextureDirty)
-        updateBrushTexture();
+        if ((currentBrush->style() == Qt::SolidPattern) || brushIsPattern)
+            useGlobalOpacityUniform = false; // Global opacity handled by srcPixel shader
+    }
+    shaderManager->setUseGlobalOpacity(useGlobalOpacityUniform);
 
-    if (compositionModeDirty)
-        updateCompositionMode();
 
+    // If the shader program needs changing, we change it and mark all uniforms as dirty
     if (shaderManager->useCorrectShaderProg()) {
         // The shader program has changed so mark all uniforms as dirty:
         brushUniformsDirty = true;
-        brushShaderMatrixUniformDirty = true;
+        shaderMatrixUniformDirty = true;
+        depthUniformDirty = true;
     }
 
-    if (brushUniformsDirty)
+    if (brushUniformsDirty && mode != ImageDrawingMode)
         updateBrushUniforms();
 
-    if (brushShaderMatrixUniformDirty) {
-        shaderManager->brushShader()->uniforms()[QLatin1String("pmvMatrix")] = pmvMatrix;
-        brushShaderMatrixUniformDirty = false;
+    if (shaderMatrixUniformDirty) {
+        shaderManager->currentProgram()->setUniformValue("pmvMatrix", pmvMatrix);
+        shaderMatrixUniformDirty = false;
     }
 
-    if ((q->state()->opacity < 0.99f) || !currentBrush->isOpaque())
-        glEnable(GL_BLEND);
-    else
-        glDisable(GL_BLEND);
+    if (depthUniformDirty) {
+        shaderManager->currentProgram()->setUniformValue("depth", (GLfloat)q->state()->currentDepth);
+        depthUniformDirty = false;
+    }
+
+    if (useGlobalOpacityUniform)
+        shaderManager->currentProgram()->setUniformValue("globalOpacity", (GLfloat)q->state()->opacity);
 }
 
 void QGL2PaintEngineExPrivate::composite(const QGLRect& boundingRect)
@@ -749,8 +899,6 @@ void QGL2PaintEngineExPrivate::drawVertexArrays(QGL2PEXVertexArray& vertexArray,
 QGL2PaintEngineEx::QGL2PaintEngineEx()
     : QPaintEngineEx(*(new QGL2PaintEngineExPrivate(this)))
 {
-    qDebug("QGL2PaintEngineEx::QGL2PaintEngineEx()");
-
 }
 
 QGL2PaintEngineEx::~QGL2PaintEngineEx()
@@ -761,8 +909,10 @@ void QGL2PaintEngineEx::fill(const QVectorPath &path, const QBrush &brush)
 {
     Q_D(QGL2PaintEngineEx);
 
-    QTime startTime = QTime::currentTime();
+    if (brush.style() == Qt::NoBrush)
+        return;
 
+    ensureActive();
     d->setBrush(&brush);
     d->fill(path);
     d->setBrush(&(state()->brush)); // reset back to the state's brush
@@ -775,6 +925,8 @@ void QGL2PaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
     if (pen.style() == Qt::NoPen)
         return;
 
+    ensureActive();
+
     if ( (pen.isCosmetic() && (pen.style() == Qt::SolidLine)) && (pen.widthF() < 2.5f) )
     {
         // We only handle solid, cosmetic pens with a width of 1 pixel
@@ -790,7 +942,6 @@ void QGL2PaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
         d->setBrush(&(state()->brush));
     } else
         return QPaintEngineEx::stroke(path, pen);
-
 }
 
 void QGL2PaintEngineEx::penChanged()
@@ -819,7 +970,6 @@ void QGL2PaintEngineEx::opacityChanged()
     Q_D(QGL2PaintEngineEx);
 
     Q_ASSERT(d->shaderManager);
-    d->shaderManager->setUseGlobalOpacity(state()->opacity > 0.999);
     d->brushUniformsDirty = true;
 }
 
@@ -845,45 +995,44 @@ void QGL2PaintEngineEx::transformChanged()
 void QGL2PaintEngineEx::drawPixmap(const QRectF& dest, const QPixmap & pixmap, const QRectF & src)
 {
     Q_D(QGL2PaintEngineEx);
-    glActiveTexture(QT_BRUSH_TEXTURE_UNIT);
+    ensureActive();
+    d->transferMode(ImageDrawingMode);
 
-    d->ctx->d_func()->bindTexture(pixmap, GL_TEXTURE_2D, GL_RGBA, true);
+    QGLContext *ctx = d->ctx;
+    glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
+    ctx->d_func()->bindTexture(pixmap, GL_TEXTURE_2D, GL_RGBA, true);
 
-    //FIXME: we should use hasAlpha() instead, but that's SLOW at the moment
-    if ((state()->opacity < 0.99f) || pixmap.hasAlphaChannel())
-        glEnable(GL_BLEND);
-    else
-        glDisable(GL_BLEND);
+    bool isBitmap = pixmap.isQBitmap();
+    bool isOpaque = !isBitmap && !pixmap.hasAlphaChannel();
 
-    d->drawTexture(dest, src, pixmap.width(), pixmap.height());
+    d->drawTexture(dest, src, pixmap.size(), isOpaque, isBitmap);
 }
 
 void QGL2PaintEngineEx::drawImage(const QRectF& dest, const QImage& image, const QRectF& src,
                         Qt::ImageConversionFlags)
 {
     Q_D(QGL2PaintEngineEx);
-    glActiveTexture(QT_BRUSH_TEXTURE_UNIT);
-    d->ctx->d_func()->bindTexture(image, GL_TEXTURE_2D, GL_RGBA, true);
+    ensureActive();
+    d->transferMode(ImageDrawingMode);
 
-    if ((state()->opacity < 0.99f) || image.hasAlphaChannel())
-        glEnable(GL_BLEND);
-    else
-        glDisable(GL_BLEND);
+    QGLContext *ctx = d->ctx;
+    glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
+    ctx->d_func()->bindTexture(image, GL_TEXTURE_2D, GL_RGBA, true);
 
-    d->drawTexture(dest, src, image.width(), image.height());
+    d->drawTexture(dest, src, image.size(), !image.hasAlphaChannel());
 }
 
 void QGL2PaintEngineEx::drawTextItem(const QPointF &p, const QTextItem &textItem)
 {
-    QOpenGLPaintEngineState *s = state();
+    Q_D(QGL2PaintEngineEx);
+
+    ensureActive();
+    QOpenGL2PaintEngineState *s = state();
 
     const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem);
 
     bool drawCached = true;
 
-    if (state()->pen.brush().style() != Qt::SolidPattern)
-        drawCached = false;
-
     if (s->matrix.type() > QTransform::TxTranslate)
         drawCached = false;
 
@@ -892,17 +1041,17 @@ void QGL2PaintEngineEx::drawTextItem(const QPointF &p, const QTextItem &textItem
         drawCached = false;
 
     if (drawCached) {
-        drawCachedGlyphs(p, ti);
+        d->drawCachedGlyphs(p, ti);
         return;
     }
 
     QPaintEngineEx::drawTextItem(p, ti);
 }
 
-void QGL2PaintEngineEx::drawCachedGlyphs(const QPointF &p, const QTextItemInt &ti)
+void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, const QTextItemInt &ti)
 {
-    Q_D(QGL2PaintEngineEx);
-    QOpenGLPaintEngineState *s = state();
+    Q_Q(QGL2PaintEngineEx);
+    QOpenGL2PaintEngineState *s = q->state();
 
     QVarLengthArray<QFixedPoint> positions;
     QVarLengthArray<glyph_t> glyphs;
@@ -914,81 +1063,67 @@ void QGL2PaintEngineEx::drawCachedGlyphs(const QPointF &p, const QTextItemInt &t
         ? QFontEngineGlyphCache::Type(ti.fontEngine->glyphFormat)
         : QFontEngineGlyphCache::Raster_A8;
 
-    QImageTextureGlyphCache *cache =
-        (QImageTextureGlyphCache *) ti.fontEngine->glyphCache(glyphType, s->matrix);
+    QGLTextureGlyphCache *cache =
+        (QGLTextureGlyphCache *) ti.fontEngine->glyphCache(ctx, s->matrix);
     if (!cache) {
-        cache = new QImageTextureGlyphCache(glyphType, s->matrix);
-        ti.fontEngine->setGlyphCache(glyphType, cache);
+        cache = new QGLTextureGlyphCache(ctx, glyphType, s->matrix);
+        ti.fontEngine->setGlyphCache(ctx, cache);
     }
 
+    cache->setPaintEnginePrivate(this);
     cache->populate(ti, glyphs, positions);
 
-    const QImage &image = cache->image();
-    int margin = cache->glyphMargin();
-
-    if (image.isNull())
+    if (cache->width() == 0 || cache->height() == 0)
         return;
 
-    glActiveTexture(QT_BRUSH_TEXTURE_UNIT);
-    d->ctx->d_func()->bindTexture(image, GL_TEXTURE_2D, GL_RGBA, true);
-
-    glEnable(GL_BLEND);
+    transferMode(TextDrawingMode);
 
-    d->shaderManager->textShader()->use();
-    d->updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, false);
+    if (glyphType == QFontEngineGlyphCache::Raster_A8)
+        shaderManager->setMaskType(QGLEngineShaderManager::PixelMask);
+    else if (glyphType == QFontEngineGlyphCache::Raster_RGBMask)
+        shaderManager->setMaskType(QGLEngineShaderManager::SubPixelMask);
+    //### TODO: Gamma correction
+    shaderManager->setTextureCoordsEnabled(true);
 
-    if (d->compositionModeDirty)
-        d->updateCompositionMode();
+    int margin = cache->glyphMargin();
 
-    if (d->matrixDirty)
-        d->updateMatrix();
+    GLfloat dx = 1.0 / cache->width();
+    GLfloat dy = 1.0 / cache->height();
 
-    if (d->textShaderMatrixUniformDirty) {
-        d->shaderManager->textShader()->uniforms()[QLatin1String("pmvMatrix")] = d->pmvMatrix;
-        d->textShaderMatrixUniformDirty = false;
-    }
+    QGLPoint *oldVertexCoordinateDataPtr = vertexCoordinateArray.data();
+    QGLPoint *oldTextureCoordinateDataPtr = textureCoordinateArray.data();
 
-    d->shaderManager->textShader()->uniforms()[QLatin1String("textureSampler")] = QT_BRUSH_TEXTURE_UNIT;
-    QColor col = d->premultiplyColor(state()->pen.color(), (GLfloat)state()->opacity);
-    d->shaderManager->textShader()->uniforms()[QLatin1String("fragmentColor")] = col;
+    vertexCoordinateArray.clear();
+    textureCoordinateArray.clear();
 
-    GLfloat dx = 1.0 / image.width();
-    GLfloat dy = 1.0 / image.height();
-
-    glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
-    glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
     for (int i=0; i<glyphs.size(); ++i) {
         const QTextureGlyphCache::Coord &c = cache->coords.value(glyphs[i]);
         int x = positions[i].x.toInt() + c.baseLineX - margin;
         int y = positions[i].y.toInt() - c.baseLineY - margin;
 
-        QGLRect dest = QRectF(x, y, c.w, c.h);
-        QGLRect src = QRectF(c.x, c.y, c.w, c.h);
+        vertexCoordinateArray.addRect(QRectF(x, y, c.w, c.h));
+        textureCoordinateArray.addRect(QRectF(c.x*dx, c.y*dy, c.w * dx, c.h * dy));
+    }
+
+    glActiveTexture(GL_TEXTURE0 + QT_MASK_TEXTURE_UNIT);
+    glBindTexture(GL_TEXTURE_2D, cache->texture());
+    updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, false);
 
-        GLfloat vertexCoords[] = {
-            dest.left,  dest.top,
-            dest.left,  dest.bottom,
-            dest.right, dest.bottom,
-            dest.right, dest.top
-        };
+    QBrush pensBrush = q->state()->pen.brush();
+    setBrush(&pensBrush);
 
-        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoords);
+    prepareForDraw(false); // Text always causes src pixels to be transparent
 
-        QGLRect srcTextureRect(src.left*dx, 1.0 - src.top*dy, src.right*dx, 1.0 - src.bottom*dy);
+    shaderManager->currentProgram()->setUniformValue("maskTexture", QT_MASK_TEXTURE_UNIT);
 
-        GLfloat textureCoords[] = {
-            srcTextureRect.left,  srcTextureRect.top,
-            srcTextureRect.left,  srcTextureRect.bottom,
-            srcTextureRect.right, srcTextureRect.bottom,
-            srcTextureRect.right, srcTextureRect.top
-        };
+    if (vertexCoordinateArray.data() != oldVertexCoordinateDataPtr)
+        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray.data());
+    if (textureCoordinateArray.data() != oldTextureCoordinateDataPtr)
+        glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray.data());
 
-        glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoords);
+    glDrawArrays(GL_TRIANGLES, 0, 6 * glyphs.size());
 
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-    }
-    glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
-    glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    setBrush(&(q->state()->brush)); //###
 }
 
 bool QGL2PaintEngineEx::begin(QPaintDevice *pdev)
@@ -996,15 +1131,31 @@ bool QGL2PaintEngineEx::begin(QPaintDevice *pdev)
     Q_D(QGL2PaintEngineEx);
 
 //     qDebug("QGL2PaintEngineEx::begin()");
+    d->drawable.setDevice(pdev);
+    d->ctx = d->drawable.context();
+
+    if (d->ctx->d_ptr->active_engine) {
+        QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx *>(d->ctx->d_ptr->active_engine);
+        QGL2PaintEngineExPrivate *p = static_cast<QGL2PaintEngineExPrivate *>(engine->d_ptr);
+        p->transferMode(BrushDrawingMode);
+        p->drawable.doneCurrent();
+    }
+
+    d->ctx->d_ptr->active_engine = this;
+    d->last_created_state = 0;
 
-    QGLWidget* widget = static_cast<QGLWidget*>(pdev);
-    d->ctx = const_cast<QGLContext*>(widget->context());
-    d->ctx->makeCurrent();
-    d->width = widget->width();
-    d->height = widget->height();
+    d->drawable.makeCurrent();
+    QSize sz = d->drawable.size();
+    d->width = sz.width();
+    d->height = sz.height();
+    d->mode = BrushDrawingMode;
+
+#if !defined(QT_OPENGL_ES_2)
+    qt_resolve_version_2_0_functions(d->ctx);
+#endif
 
     if (!d->shaderManager)
-        d->shaderManager = new QGLPEXShaderManager(d->ctx);
+        d->shaderManager = new QGLEngineShaderManager(d->ctx);
 
     glViewport(0, 0, d->width, d->height);
 
@@ -1018,264 +1169,378 @@ bool QGL2PaintEngineEx::begin(QPaintDevice *pdev)
     d->brushUniformsDirty = true;
     d->matrixDirty = true;
     d->compositionModeDirty = true;
-    d->stencilBuferDirty = true;
+    d->stencilBufferDirty = true;
+    d->simpleShaderDepthUniformDirty = true;
+    d->depthUniformDirty = true;
 
     d->use_system_clip = !systemClip().isEmpty();
 
     glDisable(GL_DEPTH_TEST);
+    glDisable(GL_SCISSOR_TEST);
+    glDepthFunc(GL_LEQUAL);
+    glDepthMask(false);
+
+    QGLPixmapData *source = d->drawable.copyOnBegin();
+    if (d->drawable.context()->d_func()->clear_on_painter_begin && d->drawable.autoFillBackground()) {
+        if (d->drawable.hasTransparentBackground())
+            glClearColor(0.0, 0.0, 0.0, 0.0);
+        else {
+            const QColor &c = d->drawable.backgroundColor();
+            float alpha = c.alphaF();
+            glClearColor(c.redF() * alpha, c.greenF() * alpha, c.blueF() * alpha, alpha);
+        }
+        glClear(GL_COLOR_BUFFER_BIT);
+    } else if (source) {
+        QGLContext *ctx = d->ctx;
+
+        d->transferMode(ImageDrawingMode);
+
+        glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);
+        source->bind(false);
+
+        QRect rect(0, 0, source->width(), source->height());
+        d->drawTexture(QRectF(rect), QRectF(rect), rect.size(), true);
+    }
 
+    d->systemStateChanged();
     return true;
 }
 
 bool QGL2PaintEngineEx::end()
 {
     Q_D(QGL2PaintEngineEx);
-    d->ctx->swapBuffers();
+    QGLContext *ctx = d->ctx;
+    if (ctx->d_ptr->active_engine != this) {
+        QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx *>(ctx->d_ptr->active_engine);
+        if (engine && engine->isActive()) {
+            QGL2PaintEngineExPrivate *p = static_cast<QGL2PaintEngineExPrivate *>(engine->d_ptr);
+            p->transferMode(BrushDrawingMode);
+            p->drawable.doneCurrent();
+        }
+        d->drawable.makeCurrent();
+    }
+
+    glUseProgram(0);
+    d->transferMode(BrushDrawingMode);
+    d->drawable.swapBuffers();
+    d->drawable.doneCurrent();
+    d->ctx->d_ptr->active_engine = 0;
+
     return false;
 }
 
+void QGL2PaintEngineEx::ensureActive()
+{
+    Q_D(QGL2PaintEngineEx);
+    QGLContext *ctx = d->ctx;
+
+    if (isActive() && ctx->d_ptr->active_engine != this) {
+        QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx *>(ctx->d_ptr->active_engine);
+        if (engine && engine->isActive()) {
+            QGL2PaintEngineExPrivate *p = static_cast<QGL2PaintEngineExPrivate *>(engine->d_ptr);
+            p->transferMode(BrushDrawingMode);
+            p->drawable.doneCurrent();
+        }
+        d->drawable.makeCurrent();
+
+        ctx->d_ptr->active_engine = this;
+
+        glDisable(GL_DEPTH_TEST);
 
-/////////////////////////////////// State/Clipping stolen from QOpenGLPaintEngine //////////////////////////////////////////
+        glViewport(0, 0, d->width, d->height);
+
+        setState(state());
+    }
+}
+
+void QGL2PaintEngineExPrivate::updateDepthScissorTest()
+{
+    Q_Q(QGL2PaintEngineEx);
+    if (q->state()->depthTestEnabled)
+        glEnable(GL_DEPTH_TEST);
+    else
+        glDisable(GL_DEPTH_TEST);
+
+    if (q->state()->scissorTestEnabled)
+        glEnable(GL_SCISSOR_TEST);
+    else
+        glDisable(GL_SCISSOR_TEST);
+}
 
 void QGL2PaintEngineEx::clipEnabledChanged()
 {
     Q_D(QGL2PaintEngineEx);
 
-    d->updateDepthClip();
+    d->simpleShaderDepthUniformDirty = true;
+    d->depthUniformDirty = true;
+
+    if (painter()->hasClipping()) {
+        d->regenerateDepthClip();
+    } else {
+        if (d->use_system_clip) {
+            state()->currentDepth = -0.5f;
+        } else {
+            glDisable(GL_DEPTH_TEST);
+            state()->depthTestEnabled = false;
+        }
+    }
 }
 
-void QGL2PaintEngineEx::clip(const QVectorPath &path, Qt::ClipOperation op)
+void QGL2PaintEngineExPrivate::writeClip(const QVectorPath &path, float depth)
 {
-//     qDebug("QGL2PaintEngineEx::clip()");
-    const qreal *points = path.points();
-    const QPainterPath::ElementType *types = path.elements();
-    if (!types && path.shape() == QVectorPath::RectangleHint) {
-        QRectF r(points[0], points[1], points[4]-points[0], points[5]-points[1]);
-        updateClipRegion(QRegion(r.toRect()), op);
-        return;
-    }
+    transferMode(BrushDrawingMode);
 
-    QPainterPath p;
-    if (types) {
-        int id = 0;
-        for (int i=0; i<path.elementCount(); ++i) {
-            switch(types[i]) {
-            case QPainterPath::MoveToElement:
-                p.moveTo(QPointF(points[id], points[id+1]));
-                id+=2;
-                break;
-            case QPainterPath::LineToElement:
-                p.lineTo(QPointF(points[id], points[id+1]));
-                id+=2;
-                break;
-            case QPainterPath::CurveToElement: {
-                QPointF p1(points[id], points[id+1]);
-                QPointF p2(points[id+2], points[id+3]);
-                QPointF p3(points[id+4], points[id+5]);
-                p.cubicTo(p1, p2, p3);
-                id+=6;
-                break;
-            }
-            case QPainterPath::CurveToDataElement:
-                ;
-                break;
-            }
-        }
-    } else if (!path.isEmpty()) {
-        p.moveTo(QPointF(points[0], points[1]));
-        int id = 2;
-        for (int i=1; i<path.elementCount(); ++i) {
-            p.lineTo(QPointF(points[id], points[id+1]));
-            id+=2;
-        }
+    if (matrixDirty)
+        updateMatrix();
+
+    if (q->state()->needsDepthBufferClear) {
+        glDepthMask(true);
+        glClearDepth(0.5);
+        glClear(GL_DEPTH_BUFFER_BIT);
+        q->state()->needsDepthBufferClear = false;
+        glDepthMask(false);
     }
-    if (path.hints() & QVectorPath::WindingFill)
-        p.setFillRule(Qt::WindingFill);
 
-    updateClipRegion(QRegion(p.toFillPolygon().toPolygon(), p.fillRule()), op);
-    return;
+    if (path.isEmpty())
+        return;
+
+    glDisable(GL_BLEND);
+    glDepthMask(false);
+
+    vertexCoordinateArray.clear();
+    vertexCoordinateArray.addPath(path, inverseScale);
+
+    glDepthMask(GL_FALSE);
+    fillStencilWithVertexArray(vertexCoordinateArray, path.hasWindingFill());
+
+    // Stencil the clip onto the clip buffer
+    glColorMask(false, false, false, false);
+    glDepthMask(true);
+
+    shaderManager->simpleProgram()->setUniformValue("depth", depth);
+    simpleShaderDepthUniformDirty = true;
+
+    glEnable(GL_DEPTH_TEST);
+    glDepthFunc(GL_ALWAYS);
+
+    glStencilFunc(GL_NOTEQUAL, 0, 0xFFFF); // Pass if stencil buff value != 0
+    glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
+
+    glEnable(GL_STENCIL_TEST);
+    composite(vertexCoordinateArray.boundingRect());
+    glDisable(GL_STENCIL_TEST);
+
+    glStencilMask(0);
+
+    glColorMask(true, true, true, true);
+    glDepthMask(false);
 }
 
-void QGL2PaintEngineEx::updateClipRegion(const QRegion &clipRegion, Qt::ClipOperation op)
+void QGL2PaintEngineEx::clip(const QVectorPath &path, Qt::ClipOperation op)
 {
-//     qDebug("QGL2PaintEngineEx::updateClipRegion()");
+//     qDebug("QGL2PaintEngineEx::clip()");
     Q_D(QGL2PaintEngineEx);
 
-    QRegion sysClip = systemClip();
-    if (op == Qt::NoClip && !d->use_system_clip) {
-        state()->hasClipping = false;
-        state()->clipRegion = QRegion();
-        d->updateDepthClip();
-        return;
-    }
+    if (op == Qt::ReplaceClip && !d->hasClipOperations())
+        op = Qt::IntersectClip;
 
-    bool isScreenClip = false;
-    if (!d->use_system_clip) {
-        QVector<QRect> untransformedRects = clipRegion.rects();
+    if (!path.isEmpty() && op == Qt::IntersectClip && (path.hints() & QVectorPath::RectangleHint)) {
+        const QPointF* const points = reinterpret_cast<const QPointF*>(path.points());
+        QRectF rect(points[0], points[2]);
 
-        if (untransformedRects.size() == 1) {
-            QPainterPath path;
-            path.addRect(untransformedRects[0]);
-            //path = d->matrix.map(path);
-            path = state()->matrix.map(path);
-
-//             if (path.contains(QRectF(QPointF(), d->drawable.size())))
-//                 isScreenClip = true;
-            if (path.contains(QRectF(0.0, 0.0, d->width, d->height)))
-                isScreenClip = true;
+        if (state()->matrix.type() <= QTransform::TxScale) {
+            rect = state()->matrix.mapRect(rect);
+
+            if (d->use_system_clip && rect.contains(d->systemClip.boundingRect())
+                || rect.contains(QRect(0, 0, d->width, d->height)))
+                return;
         }
     }
 
-//     QRegion region = isScreenClip ? QRegion() : clipRegion * d->matrix;
-    QRegion region = isScreenClip ? QRegion() : clipRegion * state()->matrix;
     switch (op) {
     case Qt::NoClip:
-        if (!d->use_system_clip)
-            break;
-        state()->clipRegion = sysClip;
+        if (d->use_system_clip) {
+            glEnable(GL_DEPTH_TEST);
+            state()->depthTestEnabled = true;
+            state()->currentDepth = -0.5;
+        } else {
+            glDisable(GL_DEPTH_TEST);
+            state()->depthTestEnabled = false;
+        }
+        state()->canRestoreClip = false;
         break;
     case Qt::IntersectClip:
-        if (isScreenClip)
-            return;
-        if (state()->hasClipping) {
-            state()->clipRegion &= region;
-            break;
-        }
-        // fall through
+        state()->maxDepth = (1.0f + state()->maxDepth) * 0.5;
+        d->writeClip(path, state()->maxDepth);
+        state()->currentDepth = 1.5 * state()->maxDepth - 0.5f;
+        state()->depthTestEnabled = true;
+        break;
     case Qt::ReplaceClip:
-        if (d->use_system_clip && !sysClip.isEmpty())
-            state()->clipRegion = region & sysClip;
-        else
-            state()->clipRegion = region;
+        d->systemStateChanged();
+        state()->maxDepth = 0.5f;
+        glDepthFunc(GL_ALWAYS);
+        d->writeClip(path, state()->maxDepth);
+        state()->currentDepth = 0.25f;
+        state()->canRestoreClip = false;
+        state()->depthTestEnabled = true;
         break;
     case Qt::UniteClip:
-        state()->clipRegion |= region;
-        if (d->use_system_clip && !sysClip.isEmpty())
-            state()->clipRegion &= sysClip;
-        break;
-    default:
+        glDepthFunc(GL_ALWAYS);
+        d->writeClip(path, state()->maxDepth);
+        state()->canRestoreClip = false;
+        state()->depthTestEnabled = true;
         break;
     }
 
-    if (isScreenClip) {
-        state()->hasClipping = false;
-        state()->clipRegion = QRegion();
-    } else {
-        state()->hasClipping = op != Qt::NoClip || d->use_system_clip;
+    glDepthFunc(GL_LEQUAL);
+    if (state()->depthTestEnabled) {
+        glEnable(GL_DEPTH_TEST);
+        d->simpleShaderDepthUniformDirty = true;
+        d->depthUniformDirty = true;
     }
-
-    if (state()->hasClipping && state()->clipRegion.rects().size() == 1)
-        state()->fastClip = state()->clipRegion.rects().at(0);
-    else
-        state()->fastClip = QRect();
-
-    d->updateDepthClip();
 }
 
-
-void QGL2PaintEngineExPrivate::updateDepthClip()
+void QGL2PaintEngineExPrivate::regenerateDepthClip()
 {
-//     qDebug("QGL2PaintEngineExPrivate::updateDepthClip()");
+    systemStateChanged();
+    replayClipOperations();
+}
 
+void QGL2PaintEngineExPrivate::systemStateChanged()
+{
     Q_Q(QGL2PaintEngineEx);
+    use_system_clip = !systemClip.isEmpty();
 
     glDisable(GL_DEPTH_TEST);
+    q->state()->depthTestEnabled = false;
+    q->state()->scissorTestEnabled = false;
+    q->state()->needsDepthBufferClear = true;
+
     glDisable(GL_SCISSOR_TEST);
 
-    if (!q->state()->hasClipping)
-        return;
+    q->state()->currentDepth = -0.5f;
+    q->state()->maxDepth = 0.5f;
 
-    QRect fastClip;
-    if (q->state()->clipEnabled) {
-        fastClip = q->state()->fastClip;
-    } else if (use_system_clip && q->systemClip().rects().count() == 1) {
-        fastClip = q->systemClip().rects().at(0);
-    }
+    if (use_system_clip) {
+        QRect bounds = systemClip.boundingRect();
+        if (systemClip.numRects() == 1
+            && bounds == QRect(0, 0, width, height))
+        {
+            q->state()->needsDepthBufferClear = true;
+        } else {
+            glEnable(GL_SCISSOR_TEST);
 
-    if (!fastClip.isEmpty()) {
-        glEnable(GL_SCISSOR_TEST);
+            const int left = bounds.left();
+            const int width = bounds.width();
+            const int bottom = height - (bounds.top() + bounds.height());
+            const int height = bounds.height();
 
-        const int left = fastClip.left();
-        const int width = fastClip.width();
-        const int bottom = height - (fastClip.bottom() + 1);
-        const int height = fastClip.height();
+            glScissor(left, bottom, width, height);
 
-        glScissor(left, bottom, width, height);
-        return;
-    }
+            QTransform transform = q->state()->matrix;
+            q->state()->matrix = QTransform();
+            q->transformChanged();
 
-    glClearDepthf(0x0);
-    glDepthMask(true);
-    glClear(GL_DEPTH_BUFFER_BIT);
-    glClearDepthf(0x1);
+            q->state()->needsDepthBufferClear = false;
 
-    const QVector<QRect> rects = q->state()->clipEnabled ? q->state()->clipRegion.rects() : q->systemClip().rects();
-    glEnable(GL_SCISSOR_TEST);
-    for (int i = 0; i < rects.size(); ++i) {
-        QRect rect = rects.at(i);
+            glDepthMask(true);
 
-        const int left = rect.left();
-        const int width = rect.width();
-        const int bottom = height - (rect.bottom() + 1);
-        const int height = rect.height();
+            glClearDepth(0);
+            glClear(GL_DEPTH_BUFFER_BIT);
 
-        glScissor(left, bottom, width, height);
+            QPainterPath path;
+            path.addRegion(systemClip);
 
-        glClear(GL_DEPTH_BUFFER_BIT);
-    }
-    glDisable(GL_SCISSOR_TEST);
+            glDepthFunc(GL_ALWAYS);
+            writeClip(qtVectorPathForPath(path), 0.0f);
+            glDepthFunc(GL_LEQUAL);
 
-    glDepthMask(false);
-    glDepthFunc(GL_LEQUAL);
-    glEnable(GL_DEPTH_TEST);
-}
+            glEnable(GL_DEPTH_TEST);
+            q->state()->depthTestEnabled = true;
+            q->state()->scissorTestEnabled = true;
 
+            q->state()->matrix = transform;
+            q->transformChanged();
+        }
 
+        q->state()->currentDepth = -0.5f;
+        simpleShaderDepthUniformDirty = true;
+        depthUniformDirty = true;
+    }
+}
 
-void QGL2PaintEngineEx::setState(QPainterState *s)
+void QGL2PaintEngineEx::setState(QPainterState *new_state)
 {
-//     qDebug("QGL2PaintEngineEx::setState()");
+    //     qDebug("QGL2PaintEngineEx::setState()");
 
     Q_D(QGL2PaintEngineEx);
+
+    QOpenGL2PaintEngineState *s = static_cast<QOpenGL2PaintEngineState *>(new_state);
+    QOpenGL2PaintEngineState *old_state = state();
+
     QPaintEngineEx::setState(s);
 
-    d->updateDepthClip();
+    if (s == d->last_created_state) {
+        d->last_created_state = 0;
+        return;
+    }
 
     d->matrixDirty = true;
     d->compositionModeDirty = true;
     d->brushTextureDirty = true;
     d->brushUniformsDirty = true;
+    d->simpleShaderDepthUniformDirty = true;
+    d->depthUniformDirty = true;
     d->simpleShaderMatrixUniformDirty = true;
-    d->brushShaderMatrixUniformDirty = true;
-    d->imageShaderMatrixUniformDirty = true;
-    d->textShaderMatrixUniformDirty = true;
+    d->shaderMatrixUniformDirty = true;
+
+    if (old_state && old_state != s && old_state->canRestoreClip) {
+        d->updateDepthScissorTest();
+        glDepthMask(false);
+        glDepthFunc(GL_LEQUAL);
+        s->maxDepth = old_state->maxDepth;
+    } else {
+        d->regenerateDepthClip();
+    }
 }
 
 QPainterState *QGL2PaintEngineEx::createState(QPainterState *orig) const
 {
-    QOpenGLPaintEngineState *s;
+    Q_D(const QGL2PaintEngineEx);
+
+    QOpenGL2PaintEngineState *s;
     if (!orig)
-        s = new QOpenGLPaintEngineState();
+        s = new QOpenGL2PaintEngineState();
     else
-        s = new QOpenGLPaintEngineState(*static_cast<QOpenGLPaintEngineState *>(orig));
+        s = new QOpenGL2PaintEngineState(*static_cast<QOpenGL2PaintEngineState *>(orig));
 
+    d->last_created_state = s;
     return s;
 }
 
-QOpenGLPaintEngineState::QOpenGLPaintEngineState(QOpenGLPaintEngineState &other)
+QOpenGL2PaintEngineState::QOpenGL2PaintEngineState(QOpenGL2PaintEngineState &other)
     : QPainterState(other)
 {
-    clipRegion = other.clipRegion;
-    hasClipping = other.hasClipping;
-    fastClip = other.fastClip;
+    needsDepthBufferClear = other.needsDepthBufferClear;
+    depthTestEnabled = other.depthTestEnabled;
+    scissorTestEnabled = other.scissorTestEnabled;
+    currentDepth = other.currentDepth;
+    maxDepth = other.maxDepth;
+    canRestoreClip = other.canRestoreClip;
 }
 
-QOpenGLPaintEngineState::QOpenGLPaintEngineState()
+QOpenGL2PaintEngineState::QOpenGL2PaintEngineState()
 {
-    hasClipping = false;
+    needsDepthBufferClear = true;
+    depthTestEnabled = false;
+    scissorTestEnabled = false;
+    currentDepth = -0.5f;
+    maxDepth = 0.5f;
+    canRestoreClip = true;
 }
 
-QOpenGLPaintEngineState::~QOpenGLPaintEngineState()
+QOpenGL2PaintEngineState::~QOpenGL2PaintEngineState()
 {
 }
 
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
index ce66e4b..8a50096 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
@@ -53,21 +53,39 @@
 // We mean it.
 //
 
+#include <QDebug>
+
 #include <private/qpaintengineex_p.h>
+#include <private/qglengineshadermanager_p.h>
+#include <private/qgl2pexvertexarray_p.h>
+
+enum EngineMode {
+    ImageDrawingMode,
+    TextDrawingMode,
+    BrushDrawingMode
+};
+
+QT_BEGIN_NAMESPACE
 
 class QGL2PaintEngineExPrivate;
 
 
-class QOpenGLPaintEngineState : public QPainterState
+class QOpenGL2PaintEngineState : public QPainterState
 {
 public:
-    QOpenGLPaintEngineState(QOpenGLPaintEngineState &other);
-    QOpenGLPaintEngineState();
-    ~QOpenGLPaintEngineState();
+    QOpenGL2PaintEngineState(QOpenGL2PaintEngineState &other);
+    QOpenGL2PaintEngineState();
+    ~QOpenGL2PaintEngineState();
 
-    QRegion clipRegion;
-    bool hasClipping;
-    QRect fastClip;
+    bool needsDepthBufferClear;
+    qreal depthBufferClearValue;
+
+    bool depthTestEnabled;
+    bool scissorTestEnabled;
+    qreal currentDepth;
+    qreal maxDepth;
+
+    bool canRestoreClip;
 };
 
 
@@ -81,6 +99,8 @@ public:
     bool begin(QPaintDevice *device);
     bool end();
 
+    void ensureActive();
+
     virtual void fill(const QVectorPath &path, const QBrush &brush);
     virtual void stroke(const QVectorPath &path, const QPen &pen);
     virtual void clip(const QVectorPath &path, Qt::ClipOperation op);
@@ -100,26 +120,106 @@ public:
     virtual void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr,
                            Qt::ImageConversionFlags flags = Qt::AutoColor);
     virtual void drawTextItem(const QPointF &p, const QTextItem &textItem);
-    void drawCachedGlyphs(const QPointF &p, const QTextItemInt &ti);
 
     Type type() const { return OpenGL; }
 
-
-    // State stuff is just for clipping and ripped off from QGLPaintEngine
     void setState(QPainterState *s);
     QPainterState *createState(QPainterState *orig) const;
-    inline QOpenGLPaintEngineState *state() {
-        return static_cast<QOpenGLPaintEngineState *>(QPaintEngineEx::state());
+    inline QOpenGL2PaintEngineState *state() {
+        return static_cast<QOpenGL2PaintEngineState *>(QPaintEngineEx::state());
     }
-    inline const QOpenGLPaintEngineState *state() const {
-        return static_cast<const QOpenGLPaintEngineState *>(QPaintEngineEx::state());
+    inline const QOpenGL2PaintEngineState *state() const {
+        return static_cast<const QOpenGL2PaintEngineState *>(QPaintEngineEx::state());
     }
-    void updateClipRegion(const QRegion &clipRegion, Qt::ClipOperation op);
+    virtual void sync();
 
 private:
     Q_DISABLE_COPY(QGL2PaintEngineEx)
 };
 
+class QGL2PaintEngineExPrivate : public QPaintEngineExPrivate
+{
+    Q_DECLARE_PUBLIC(QGL2PaintEngineEx)
+public:
+    QGL2PaintEngineExPrivate(QGL2PaintEngineEx *q_ptr) :
+            q(q_ptr),
+            width(0), height(0),
+            ctx(0),
+            currentBrush( &(q->state()->brush) ),
+            inverseScale(1),
+            shaderManager(0)
+    { }
+
+    ~QGL2PaintEngineExPrivate();
+
+    void updateBrushTexture();
+    void updateBrushUniforms();
+    void updateMatrix();
+    void updateCompositionMode();
+    void updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform);
+
+    void setBrush(const QBrush* brush);
+
+    void transferMode(EngineMode newMode);
+
+    // fill, drawOutline, drawTexture & drawCachedGlyphs are the rendering entry points:
+    void fill(const QVectorPath &path);
+    void drawOutline(const QVectorPath& path);
+    void drawTexture(const QGLRect& dest, const QGLRect& src, const QSize &textureSize, bool opaque, bool pattern = false);
+    void drawCachedGlyphs(const QPointF &p, const QTextItemInt &ti);
+
+    void drawVertexArrays(QGL2PEXVertexArray& vertexArray, GLenum primitive);
+        // ^ draws whatever is in the vertex array
+    void composite(const QGLRect& boundingRect);
+        // ^ Composites the bounding rect onto dest buffer
+    void fillStencilWithVertexArray(QGL2PEXVertexArray& vertexArray, bool useWindingFill);
+        // ^ Calls drawVertexArrays to render into stencil buffer
+
+    void prepareForDraw(bool srcPixelsAreOpaque);
+
+    inline void useSimpleShader();
+    inline QColor premultiplyColor(QColor c, GLfloat opacity);
+
+    QGL2PaintEngineEx* q;
+    QGLDrawable drawable;
+    int width, height;
+    QGLContext *ctx;
+    EngineMode mode;
+
+    mutable QOpenGL2PaintEngineState *last_created_state;
+
+    // Dirty flags
+    bool matrixDirty; // Implies matrix uniforms are also dirty
+    bool compositionModeDirty;
+    bool brushTextureDirty;
+    bool brushUniformsDirty;
+    bool simpleShaderMatrixUniformDirty;
+    bool shaderMatrixUniformDirty;
+    bool stencilBufferDirty;
+    bool depthUniformDirty;
+    bool simpleShaderDepthUniformDirty;
+
+    const QBrush*    currentBrush; // May not be the state's brush!
+
+    GLfloat     inverseScale;
+
+    QGL2PEXVertexArray vertexCoordinateArray;
+    QGL2PEXVertexArray textureCoordinateArray;
+
+    GLfloat staticVertexCoordinateArray[8];
+    GLfloat staticTextureCoordinateArray[8];
+
+    GLfloat pmvMatrix[4][4];
+
+    QGLEngineShaderManager* shaderManager;
+
+    void writeClip(const QVectorPath &path, float depth);
+    void updateDepthScissorTest();
+    void regenerateDepthClip();
+    void systemStateChanged();
+    uint use_system_clip : 1;
+};
 
+QT_END_NAMESPACE
 
 #endif
diff --git a/src/opengl/opengl.pro b/src/opengl/opengl.pro
index 78aaddb..73af174 100644
--- a/src/opengl/opengl.pro
+++ b/src/opengl/opengl.pro
@@ -13,18 +13,15 @@ include(../qbase.pri)
 !win32:!embedded:!mac:CONFIG	   += x11
 contains(QT_CONFIG, opengl):CONFIG += opengl
 contains(QT_CONFIG, opengles1):CONFIG += opengles1
+contains(QT_CONFIG, opengles1):CONFIG += opengles1cl
 contains(QT_CONFIG, opengles2):CONFIG += opengles2
 
-!contains(QT_CONFIG, opengles2) {
-    HEADERS += qgraphicssystem_gl_p.h qwindowsurface_gl_p.h qpixmapdata_gl_p.h
-    SOURCES += qgraphicssystem_gl.cpp qwindowsurface_gl.cpp qpixmapdata_gl.cpp
-}
-
 HEADERS += qgl.h \
 	   qgl_p.h \
 	   qglcolormap.h \
 	   qglpixelbuffer.h \
 	   qglframebufferobject.h  \
+        qglextensions_p.h
 
 SOURCES	+= qgl.cpp \
 	   qglcolormap.cpp \
@@ -33,25 +30,34 @@ SOURCES	+= qgl.cpp \
            qglextensions.cpp \
 
 !contains(QT_CONFIG, opengles2) {
-    HEADERS += qpaintengine_opengl_p.h qglpixmapfilter_p.h 
-    SOURCES += qpaintengine_opengl.cpp qglpixmapfilter.cpp
+    HEADERS += qpaintengine_opengl_p.h
+    SOURCES += qpaintengine_opengl.cpp
 }
 
-contains(QT_CONFIG, opengles2) {
-    SOURCES +=  gl2paintengineex/qglgradientcache.cpp \
-                gl2paintengineex/qglpexshadermanager.cpp \
-                gl2paintengineex/qglshader.cpp \
+!contains(QT_CONFIG, opengles1):!contains(QT_CONFIG, opengles1cl) {
+    HEADERS +=  qglshaderprogram.h \
+                qglpixmapfilter_p.h  \
+                qgraphicssystem_gl_p.h \
+                qwindowsurface_gl_p.h \
+                qpixmapdata_gl_p.h \
+                gl2paintengineex/qglgradientcache_p.h \
+                gl2paintengineex/qglengineshadermanager_p.h \
+                gl2paintengineex/qgl2pexvertexarray_p.h \
+                gl2paintengineex/qpaintengineex_opengl2_p.h \
+                gl2paintengineex/qglengineshadersource_p.h
+
+    SOURCES +=  qglshaderprogram.cpp \
+                qglpixmapfilter.cpp \
+                qgraphicssystem_gl.cpp \
+                qwindowsurface_gl.cpp \
+                qpixmapdata_gl.cpp \
+                gl2paintengineex/qglgradientcache.cpp \
+                gl2paintengineex/qglengineshadermanager.cpp \
                 gl2paintengineex/qgl2pexvertexarray.cpp \
                 gl2paintengineex/qpaintengineex_opengl2.cpp
 
-    HEADERS +=  gl2paintengineex/qglgradientcache_p.h \
-                gl2paintengineex/qglpexshadermanager_p.h \
-                gl2paintengineex/qglshader_p.h \
-                gl2paintengineex/qgl2pexvertexarray_p.h \
-                gl2paintengineex/qpaintengineex_opengl2_p.h
 }
 
-
 x11 {
     contains(QT_CONFIG, opengles1)|contains(QT_CONFIG, opengles1cl)|contains(QT_CONFIG, opengles2) {
         SOURCES +=  qgl_x11egl.cpp \
diff --git a/src/opengl/qegl.cpp b/src/opengl/qegl.cpp
index 165a0f3..290f77c 100644
--- a/src/opengl/qegl.cpp
+++ b/src/opengl/qegl.cpp
@@ -119,7 +119,7 @@ bool QEglContext::chooseConfig
             if (red == props.value(EGL_RED_SIZE) &&
                     green == props.value(EGL_GREEN_SIZE) &&
                     blue == props.value(EGL_BLUE_SIZE) &&
-                    (props.value(EGL_ALPHA_SIZE) == EGL_DONT_CARE ||
+                    (props.value(EGL_ALPHA_SIZE) == 0 ||
                      alpha == props.value(EGL_ALPHA_SIZE))) {
                 cfg = configs[index];
                 delete [] configs;
@@ -405,7 +405,62 @@ int QEglProperties::value(int name) const
         if (props[index] == name)
             return props[index + 1];
     }
-    return EGL_DONT_CARE;
+
+    // If the attribute has not been explicitly set, return the EGL default
+    // The following defaults were taken from the EGL 1.4 spec:
+    switch(name) {
+    case EGL_BUFFER_SIZE: return 0;
+    case EGL_RED_SIZE: return 0;
+    case EGL_GREEN_SIZE: return 0;
+    case EGL_BLUE_SIZE: return 0;
+    case EGL_ALPHA_SIZE: return 0;
+#if defined(EGL_LUMINANCE_SIZE)
+    case EGL_LUMINANCE_SIZE: return 0;
+#endif
+#if defined(EGL_ALPHA_MASK_SIZE)
+    case EGL_ALPHA_MASK_SIZE: return 0;
+#endif
+    case EGL_BIND_TO_TEXTURE_RGB: return EGL_DONT_CARE;
+    case EGL_BIND_TO_TEXTURE_RGBA: return EGL_DONT_CARE;
+#if defined(EGL_COLOR_BUFFER_TYPE)
+    case EGL_COLOR_BUFFER_TYPE: return EGL_RGB_BUFFER;
+#endif
+    case EGL_CONFIG_CAVEAT: return EGL_DONT_CARE;
+    case EGL_CONFIG_ID: return EGL_DONT_CARE;
+    case EGL_DEPTH_SIZE: return 0;
+    case EGL_LEVEL: return 0;
+    case EGL_NATIVE_RENDERABLE: return EGL_DONT_CARE;
+    case EGL_NATIVE_VISUAL_TYPE: return EGL_DONT_CARE;
+    case EGL_MAX_SWAP_INTERVAL: return EGL_DONT_CARE;
+    case EGL_MIN_SWAP_INTERVAL: return EGL_DONT_CARE;
+#if defined(EGL_RENDERABLE_TYPE)
+    case EGL_RENDERABLE_TYPE: return EGL_OPENGL_ES_BIT;
+#endif
+    case EGL_SAMPLE_BUFFERS: return 0;
+    case EGL_SAMPLES: return 0;
+    case EGL_STENCIL_SIZE: return 0;
+    case EGL_SURFACE_TYPE: return EGL_WINDOW_BIT;
+    case EGL_TRANSPARENT_TYPE: return EGL_NONE;
+    case EGL_TRANSPARENT_RED_VALUE: return EGL_DONT_CARE;
+    case EGL_TRANSPARENT_GREEN_VALUE: return EGL_DONT_CARE;
+    case EGL_TRANSPARENT_BLUE_VALUE: return EGL_DONT_CARE;
+
+#if defined(EGL_VERSION_1_3)
+    case EGL_CONFORMANT: return 0;
+    case EGL_MATCH_NATIVE_PIXMAP: return EGL_NONE;
+#endif
+
+    case EGL_MAX_PBUFFER_HEIGHT:
+    case EGL_MAX_PBUFFER_WIDTH:
+    case EGL_MAX_PBUFFER_PIXELS:
+    case EGL_NATIVE_VISUAL_ID:
+    case EGL_NONE:
+        qWarning("QEglProperties::value() - Attibute %d does not affect config selection", name);
+        return EGL_DONT_CARE;
+    default:
+        qWarning("QEglProperties::value() - Attibute %d is unknown in EGL <=1.4", name);
+        return EGL_DONT_CARE;
+    }
 }
 
 // Set the value associated with a property, replacing an existing
@@ -535,7 +590,7 @@ QString QEglProperties::toString() const
     if (val != EGL_DONT_CARE) {
         str += QLatin1String("id=");
         str += QString::number(val);
-        str += QLatin1String(" ");
+        str += QLatin1Char(' ');
     }
 
 #ifdef EGL_RENDERABLE_TYPE
@@ -570,11 +625,11 @@ QString QEglProperties::toString() const
         bufferSize = EGL_DONT_CARE;
     str += QLatin1String(" rgba=");
     str += QString::number(red);
-    str += QLatin1String(",");
+    str += QLatin1Char(',');
     str += QString::number(green);
-    str += QLatin1String(",");
+    str += QLatin1Char(',');
     str += QString::number(blue);
-    str += QLatin1String(",");
+    str += QLatin1Char(',');
     str += QString::number(alpha);
     if (bufferSize != EGL_DONT_CARE) {
         // Only report buffer size if different than r+g+b+a.
@@ -593,13 +648,13 @@ QString QEglProperties::toString() const
 #endif
 
     val = value(EGL_DEPTH_SIZE);
-    if (val != EGL_DONT_CARE) {
+    if (val != 0) {
         addTag(str, QLatin1String(" depth="));
         str += QString::number(val);
     }
 
     val = value(EGL_STENCIL_SIZE);
-    if (val != EGL_DONT_CARE) {
+    if (val != 0) {
         addTag(str, QLatin1String(" stencil="));
         str += QString::number(val);
     }
@@ -649,7 +704,7 @@ QString QEglProperties::toString() const
     }
 
     val = value(EGL_LEVEL);
-    if (val != EGL_DONT_CARE) {
+    if (val != 0) {
         addTag(str, QLatin1String(" level="));
         str += QString::number(val);
     }
@@ -661,7 +716,7 @@ QString QEglProperties::toString() const
     if (height != EGL_DONT_CARE || width != EGL_DONT_CARE) {
         addTag(str, QLatin1String(" max-pbuffer-size="));
         str += QString::number(width);
-        str += QLatin1String("x");
+        str += QLatin1Char('x');
         str += QString::number(height);
         if (pixels != (width * height)) {
             addTag(str, QLatin1String(" max-pbuffer-pixels="));
@@ -700,13 +755,13 @@ QString QEglProperties::toString() const
 #endif
 
     val = value(EGL_SAMPLES);
-    if (val != EGL_DONT_CARE) {
+    if (val != 0) {
         addTag(str, QLatin1String(" samples="));
         str += QString::number(val);
     }
 
     val = value(EGL_SAMPLE_BUFFERS);
-    if (val != EGL_DONT_CARE) {
+    if (val != 0) {
         addTag(str, QLatin1String(" sample-buffers="));
         str += QString::number(val);
     }
@@ -715,9 +770,9 @@ QString QEglProperties::toString() const
     if (val == EGL_TRANSPARENT_RGB) {
         addTag(str, QLatin1String(" transparent-rgb="));
         str += QString::number(value(EGL_TRANSPARENT_RED_VALUE));
-        str += QLatin1String(",");
+        str += QLatin1Char(',');
         str += QString::number(value(EGL_TRANSPARENT_GREEN_VALUE));
-        str += QLatin1String(",");
+        str += QLatin1Char(',');
         str += QString::number(value(EGL_TRANSPARENT_BLUE_VALUE));
     }
 
@@ -755,7 +810,7 @@ QString QEglProperties::toString() const
 
 #ifdef EGL_LUMINANCE_SIZE
     val = value(EGL_LUMINANCE_SIZE);
-    if (val != EGL_DONT_CARE) {
+    if (val != 0) {
         addTag(str, QLatin1String(" luminance="));
         str += QString::number(val);
     }
@@ -763,7 +818,7 @@ QString QEglProperties::toString() const
 
 #ifdef EGL_ALPHA_MASK_SIZE
     val = value(EGL_ALPHA_MASK_SIZE);
-    if (val != EGL_DONT_CARE) {
+    if (val != 0) {
         addTag(str, QLatin1String(" alpha-mask="));
         str += QString::number(val);
     }
@@ -771,7 +826,7 @@ QString QEglProperties::toString() const
 
 #ifdef EGL_CONFORMANT
     val = value(EGL_CONFORMANT);
-    if (val != EGL_DONT_CARE) {
+    if (val != 0) {
         if (val)
             addTag(str, QLatin1String(" conformant=true"));
         else
diff --git a/src/opengl/qegl_x11egl.cpp b/src/opengl/qegl_x11egl.cpp
index 8efe7e7..c703900 100644
--- a/src/opengl/qegl_x11egl.cpp
+++ b/src/opengl/qegl_x11egl.cpp
@@ -42,6 +42,7 @@
 #include <QtGui/qpaintdevice.h>
 #include <QtGui/qpixmap.h>
 #include <QtGui/qwidget.h>
+#include <QtCore/qdebug.h>
 #include "qegl_p.h"
 
 #if defined(QT_OPENGL_ES) || defined(QT_OPENVG)
@@ -80,8 +81,10 @@ bool QEglContext::createSurface(QPaintDevice *device)
         surf = eglCreateWindowSurface(dpy, cfg, windowDrawable, 0);
     else
         surf = eglCreatePixmapSurface(dpy, cfg, pixmapDrawable, 0);
+
     if (surf == EGL_NO_SURFACE) {
-        qWarning("QEglContext::createSurface(): Unable to create EGL surface, error = 0x%x", eglGetError());
+        qWarning() << "QEglContext::createSurface(): Unable to create EGL surface:"
+                   << errorString(eglGetError());
         return false;
     }
     return true;
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index cd7a7f0..c0c7781 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -65,15 +65,27 @@
 #include "qimage.h"
 #include "qgl_p.h"
 
-#if defined(QT_OPENGL_ES_2)
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
 #include "gl2paintengineex/qpaintengineex_opengl2_p.h"
-#else
+#endif
+
+#ifndef QT_OPENGL_ES_2
 #include <private/qpaintengine_opengl_p.h>
 #endif
 
+#ifdef Q_WS_QWS
+#include <private/qglpaintdevice_qws_p.h>
+#include <private/qglwindowsurface_qws_p.h>
+#endif
+
+#include <qglpixelbuffer.h>
+#include <qglframebufferobject.h>
+
 #include <private/qimage_p.h>
 #include <private/qpixmapdata_p.h>
 #include <private/qpixmapdata_gl_p.h>
+#include <private/qglpixelbuffer_p.h>
+#include <private/qwindowsurface_gl_p.h>
 #include "qcolormap.h"
 #include "qcache.h"
 #include "qfile.h"
@@ -1290,6 +1302,7 @@ void QGLContextPrivate::init(QPaintDevice *dev, const QGLFormat &format)
     eglContext = 0;
 #endif
     pbo = 0;
+    fbo = 0;
     crWin = false;
     initDone = false;
     sharing = false;
@@ -1297,6 +1310,8 @@ void QGLContextPrivate::init(QPaintDevice *dev, const QGLFormat &format)
     max_texture_size = -1;
     version_flags_cached = false;
     version_flags = QGLFormat::OpenGL_Version_None;
+    current_fbo = 0;
+    active_engine = 0;
 }
 
 QGLContext* QGLContext::currentCtx = 0;
@@ -1307,12 +1322,8 @@ QGLContext* QGLContext::currentCtx = 0;
    QGLFramebufferObject::toImage()
 */
 
-QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_format, bool include_alpha)
+static void convertFromGLImage(QImage &img, int w, int h, bool alpha_format, bool include_alpha)
 {
-    QImage img(size, alpha_format ? QImage::Format_ARGB32 : QImage::Format_RGB32);
-    int w = size.width();
-    int h = size.height();
-    glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, img.bits());
     if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
         // OpenGL gives RGBA; Qt wants ARGB
         uint *p = (uint*)img.bits();
@@ -1343,7 +1354,30 @@ QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_format, bool include
         }
 
     }
-    return img.mirrored();
+    img = img.mirrored();
+}
+
+QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_format, bool include_alpha)
+{
+    QImage img(size, alpha_format ? QImage::Format_ARGB32 : QImage::Format_RGB32);
+    int w = size.width();
+    int h = size.height();
+    glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, img.bits());
+    convertFromGLImage(img, w, h, alpha_format, include_alpha);
+    return img;
+}
+
+QImage qt_gl_read_texture(const QSize &size, bool alpha_format, bool include_alpha)
+{
+    QImage img(size, alpha_format ? QImage::Format_ARGB32 : QImage::Format_RGB32);
+    int w = size.width();
+    int h = size.height();
+#if !defined(QT_OPENGL_ES_2) && !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    //### glGetTexImage not in GL ES 2.0, need to do something else here!
+    glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, img.bits());
+#endif
+    convertFromGLImage(img, w, h, alpha_format, include_alpha);
+    return img;
 }
 
 // returns the highest number closest to v, which is a power of 2
@@ -1429,7 +1463,7 @@ struct DDSFormat {
 #define GL_GENERATE_MIPMAP_HINT_SGIS  0x8192
 #endif
 
-Q_GLOBAL_STATIC(QGLShareRegister, _qgl_share_reg);
+Q_GLOBAL_STATIC(QGLShareRegister, _qgl_share_reg)
 Q_OPENGL_EXPORT QGLShareRegister* qgl_share_reg()
 {
     return _qgl_share_reg();
@@ -1546,7 +1580,7 @@ void QGLContextPrivate::cleanup()
     Q_Q(QGLContext);
     if (pbo) {
         QGLContext *ctx = q;
-        glDeleteBuffersARB(1, &pbo);
+        glDeleteBuffers(1, &pbo);
         pbo = 0;
     }
 }
@@ -1683,58 +1717,105 @@ static void qt_gl_clean_cache(qint64 cacheKey)
 
 static void convertToGLFormatHelper(QImage &dst, const QImage &img, GLenum texture_format)
 {
-    Q_ASSERT(dst.size() == img.size());
     Q_ASSERT(dst.depth() == 32);
     Q_ASSERT(img.depth() == 32);
 
-    const int width = img.width();
-    const int height = img.height();
-    const uint *p = (const uint*) img.scanLine(img.height() - 1);
-    uint *q = (uint*) dst.scanLine(0);
-
-    if (texture_format == GL_BGRA) {
-        if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
-            // mirror + swizzle
-            for (int i=0; i < height; ++i) {
-                const uint *end = p + width;
-                while (p < end) {
-                    *q = ((*p << 24) & 0xff000000)
-                         | ((*p >> 24) & 0x000000ff)
-                         | ((*p << 8) & 0x00ff0000)
-                         | ((*p >> 8) & 0x0000ff00);
-                    p++;
-                    q++;
+    if (dst.size() != img.size()) {
+        int target_width = dst.width();
+        int target_height = dst.height();
+        qreal sx = target_width / qreal(img.width());
+        qreal sy = target_height / qreal(img.height());
+
+        quint32 *dest = (quint32 *) dst.scanLine(0); // NB! avoid detach here
+        uchar *srcPixels = (uchar *) img.scanLine(img.height() - 1);
+        int sbpl = img.bytesPerLine();
+        int dbpl = dst.bytesPerLine();
+
+        int ix = 0x00010000 / sx;
+        int iy = 0x00010000 / sy;
+
+        quint32 basex = int(0.5 * ix);
+        quint32 srcy = int(0.5 * iy);
+
+        // scale, swizzle and mirror in one loop
+        while (target_height--) {
+            const uint *src = (const quint32 *) (srcPixels - (srcy >> 16) * sbpl);
+            int srcx = basex;
+            for (int x=0; x<target_width; ++x) {
+                uint src_pixel = src[srcx >> 16];
+                if (texture_format == GL_BGRA) {
+                    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+                        dest[x] = ((src_pixel << 24) & 0xff000000)
+                                  | ((src_pixel >> 24) & 0x000000ff)
+                                  | ((src_pixel << 8) & 0x00ff0000)
+                                  | ((src_pixel >> 8) & 0x0000ff00);
+                    } else {
+                        dest[x] = src_pixel;
+                    }
+                } else {  // GL_RGBA
+                    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+                        dest[x] = (src_pixel << 8) | ((src_pixel >> 24) & 0xff);
+                    } else {
+                        dest[x] = ((src_pixel << 16) & 0xff0000)
+                                  | ((src_pixel >> 16) & 0xff)
+                                  | (src_pixel & 0xff00ff00);
+                    }
                 }
-                p -= 2 * width;
-            }
-        } else {
-            const uint bytesPerLine = img.bytesPerLine();
-            for (int i=0; i < height; ++i) {
-                memcpy(q, p, bytesPerLine);
-                q += width;
-                p -= width;
+                srcx += ix;
             }
+            dest = (quint32 *)(((uchar *) dest) + dbpl);
+            srcy += iy;
         }
     } else {
-        if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
-            for (int i=0; i < height; ++i) {
-                const uint *end = p + width;
-                while (p < end) {
-                    *q = (*p << 8) | ((*p >> 24) & 0xFF);
-                    p++;
-                    q++;
+        const int width = img.width();
+        const int height = img.height();
+        const uint *p = (const uint*) img.scanLine(img.height() - 1);
+        uint *q = (uint*) dst.scanLine(0);
+
+        if (texture_format == GL_BGRA) {
+            if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+                // mirror + swizzle
+                for (int i=0; i < height; ++i) {
+                    const uint *end = p + width;
+                    while (p < end) {
+                        *q = ((*p << 24) & 0xff000000)
+                             | ((*p >> 24) & 0x000000ff)
+                             | ((*p << 8) & 0x00ff0000)
+                             | ((*p >> 8) & 0x0000ff00);
+                        p++;
+                        q++;
+                    }
+                    p -= 2 * width;
+                }
+            } else {
+                const uint bytesPerLine = img.bytesPerLine();
+                for (int i=0; i < height; ++i) {
+                    memcpy(q, p, bytesPerLine);
+                    q += width;
+                    p -= width;
                 }
-                p -= 2 * width;
             }
         } else {
-            for (int i=0; i < height; ++i) {
-                const uint *end = p + width;
-                while (p < end) {
-                    *q = ((*p << 16) & 0xff0000) | ((*p >> 16) & 0xff) | (*p & 0xff00ff00);
-                    p++;
-                    q++;
+            if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
+                for (int i=0; i < height; ++i) {
+                    const uint *end = p + width;
+                    while (p < end) {
+                        *q = (*p << 8) | ((*p >> 24) & 0xff);
+                        p++;
+                        q++;
+                    }
+                    p -= 2 * width;
+                }
+            } else {
+                for (int i=0; i < height; ++i) {
+                    const uint *end = p + width;
+                    while (p < end) {
+                        *q = ((*p << 16) & 0xff0000) | ((*p >> 16) & 0xff) | (*p & 0xff00ff00);
+                        p++;
+                        q++;
+                    }
+                    p -= 2 * width;
                 }
-                p -= 2 * width;
             }
         }
     }
@@ -1764,7 +1845,7 @@ GLuint QGLContextPrivate::bindTexture(const QImage &image, GLenum target, GLint
 
         use_pbo = qt_resolve_buffer_extensions(ctx);
         if (use_pbo && pbo == 0)
-            glGenBuffersARB(1, &pbo);
+            glGenBuffers(1, &pbo);
     }
 
     // the GL_BGRA format is only present in GL version >= 1.2
@@ -1777,19 +1858,18 @@ GLuint QGLContextPrivate::bindTexture(const QImage &image, GLenum target, GLint
     }
 
     // Scale the pixmap if needed. GL textures needs to have the
-    // dimensions 2^n+2(border) x 2^m+2(border).
+    // dimensions 2^n+2(border) x 2^m+2(border), unless we're using GL
+    // 2.0 or use the GL_TEXTURE_RECTANGLE texture target
     int tx_w = qt_next_power_of_two(image.width());
     int tx_h = qt_next_power_of_two(image.height());
+    bool scale = false;
 
-    // Note: the clean param is only true when a texture is bound
-    // from the QOpenGLPaintEngine - in that case we have to force
-    // a premultiplied texture format
     QImage img = image;
     if (( !(QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0) &&
           !(QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_ES_Version_2_0) )
         && (target == GL_TEXTURE_2D && (tx_w != image.width() || tx_h != image.height())))
     {
-        img = image.scaled(tx_w, tx_h);
+        scale = true;
     }
 
     GLuint tx_id;
@@ -1816,28 +1896,35 @@ GLuint QGLContextPrivate::bindTexture(const QImage &image, GLenum target, GLint
 
     uchar *ptr = 0;
     if (use_pbo) {
-        glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
-        glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, img.width() * img.height() * 4, 0, GL_STREAM_DRAW_ARB);
+        glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
+        glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, img.width() * img.height() * 4, 0, GL_STREAM_DRAW_ARB);
         ptr = reinterpret_cast<uchar *>(glMapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, GL_WRITE_ONLY_ARB));
     }
 
-    if (ptr) {
-        QImage::Format target_format = img.format();
-        if (clean || img.format() != QImage::Format_ARGB32)
-            target_format = QImage::Format_ARGB32_Premultiplied;
+    QImage::Format target_format = img.format();
+    // Note: the clean param is only true when a texture is bound
+    // from the QOpenGLPaintEngine - in that case we have to force
+    // a premultiplied texture format
+    if (clean || img.format() != QImage::Format_ARGB32)
+        target_format = QImage::Format_ARGB32_Premultiplied;
+    if (img.format() != target_format)
+        img = img.convertToFormat(target_format);
 
+    if (ptr) {
         QImage buffer(ptr, img.width(), img.height(), target_format);
-        convertToGLFormatHelper(buffer, img.convertToFormat(target_format), texture_format);
+        convertToGLFormatHelper(buffer, img, texture_format);
         glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB);
-        glTexImage2D(target, 0, format, img.width(), img.height(), 0, texture_format, GL_UNSIGNED_BYTE, 0);
+        glTexImage2D(target, 0, format, img.width(), img.height(), 0, texture_format,
+                     GL_UNSIGNED_BYTE, 0);
     } else {
-        QImage tx = convertToGLFormat(img, clean, texture_format);
+        QImage tx(scale ? QSize(tx_w, tx_h) : img.size(), target_format);
+        convertToGLFormatHelper(tx, img, texture_format);
         glTexImage2D(target, 0, format, tx.width(), tx.height(), 0, texture_format,
                      GL_UNSIGNED_BYTE, tx.bits());
     }
 
     if (use_pbo)
-        glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+        glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
 
     // this assumes the size of a texture is always smaller than the max cache size
     int cost = img.width()*img.height()*4/1024;
@@ -1889,11 +1976,13 @@ GLuint QGLContextPrivate::bindTexture(const QImage &image, GLenum target, GLint
 /*! \internal */
 GLuint QGLContextPrivate::bindTexture(const QPixmap &pixmap, GLenum target, GLint format, bool clean)
 {
-#if !defined(QT_OPENGL_ES_2)
-    if (target == qt_gl_preferredTextureTarget() && pixmap.pixmapData()->classId() == QPixmapData::OpenGLClass) {
-        const QGLPixmapData *data = static_cast<const QGLPixmapData *>(pixmap.pixmapData());
+    Q_Q(QGLContext);
+    QPixmapData *pd = pixmap.pixmapData();
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    if (target == GL_TEXTURE_2D && pd->classId() == QPixmapData::OpenGLClass) {
+        const QGLPixmapData *data = static_cast<const QGLPixmapData *>(pd);
 
-        if (data->isValidContext(QGLContext::currentContext()))
+        if (data->isValidContext(q))
             return data->bind();
     }
 #endif
@@ -2045,12 +2134,34 @@ void QGLContext::deleteTexture(QMacCompatGLuint id)
 }
 #endif
 
-// qpaintengine_opengl.cpp
-#if !defined(QT_OPENGL_ES_2)
-extern void qt_add_rect_to_array(const QRectF &r, q_vertexType *array);
-#else
-void qt_add_rect_to_array(const QRectF &r, q_vertexType *array) {};
-#endif
+void qt_add_rect_to_array(const QRectF &r, q_vertexType *array)
+{
+    qreal left = r.left();
+    qreal right = r.right();
+    qreal top = r.top();
+    qreal bottom = r.bottom();
+
+    array[0] = f2vt(left);
+    array[1] = f2vt(top);
+    array[2] = f2vt(right);
+    array[3] = f2vt(top);
+    array[4] = f2vt(right);
+    array[5] = f2vt(bottom);
+    array[6] = f2vt(left);
+    array[7] = f2vt(bottom);
+}
+
+void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, q_vertexType *array)
+{
+    array[0] = f2vt(x1);
+    array[1] = f2vt(y1);
+    array[2] = f2vt(x2);
+    array[3] = f2vt(y1);
+    array[4] = f2vt(x2);
+    array[5] = f2vt(y2);
+    array[6] = f2vt(x1);
+    array[7] = f2vt(y2);
+}
 
 static void qDrawTextureRect(const QRectF &target, GLint textureWidth, GLint textureHeight, GLenum textureTarget)
 {
@@ -2504,7 +2615,7 @@ const QGLContext* QGLContext::currentContext()
 */
 
 /*! \fn int QGLContext::choosePixelFormat(void* dummyPfd, HDC pdc)
-  
+
     \bold{Win32 only:} This virtual function chooses a pixel format
     that matches the OpenGL \link setFormat() format\endlink.
     Reimplement this function in a subclass if you need a custom
@@ -2518,7 +2629,7 @@ const QGLContext* QGLContext::currentContext()
 */
 
 /*! \fn void *QGLContext::chooseVisual()
-  
+
   \bold{X11 only:} This virtual function tries to find a visual that
   matches the format, reducing the demands if the original request
   cannot be met.
@@ -3237,7 +3348,7 @@ bool QGLWidget::event(QEvent *e)
         glFinish();
         doneCurrent();
     } else if (e->type() == QEvent::ParentChange) {
-        if (d->glcx->d_func()->screen != d->xinfo.screen()) {
+        if (d->glcx->d_func()->screen != d->xinfo.screen() || testAttribute(Qt::WA_TranslucentBackground)) {
             setContext(new QGLContext(d->glcx->requestedFormat(), this));
             // ### recreating the overlay isn't supported atm
         }
@@ -4093,14 +4204,16 @@ void QGLWidget::drawTexture(const QPointF &point, QMacCompatGLuint textureId, QM
 }
 #endif
 
-#if defined(QT_OPENGL_ES_2)
-Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_gl_engine)
-#else
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_gl_2_engine)
+#endif
+
+#ifndef QT_OPENGL_ES_2
 Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_gl_engine)
 #endif
 
 #ifdef Q_WS_QWS
-Q_OPENGL_EXPORT QOpenGLPaintEngine* qt_qgl_paint_engine()
+Q_OPENGL_EXPORT QPaintEngine* qt_qgl_paint_engine()
 {
 #if !defined(QT_OPENGL_ES_2)
     return qt_gl_engine();
@@ -4118,7 +4231,16 @@ Q_OPENGL_EXPORT QOpenGLPaintEngine* qt_qgl_paint_engine()
 */
 QPaintEngine *QGLWidget::paintEngine() const
 {
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL)
     return qt_gl_engine();
+#elif defined(QT_OPENGL_ES_2)
+    return qt_gl_2_engine();
+#else
+    if (!qt_gl_preferGL2Engine())
+        return qt_gl_engine();
+    else
+        return qt_gl_2_engine();
+#endif
 }
 
 #ifdef QT3_SUPPORT
@@ -4207,6 +4329,8 @@ void QGLExtensions::init_extensions()
     glExtensions |= FramebufferObject;
     glExtensions |= GenerateMipmap;
 #endif
+    if (extensions.contains(QLatin1String("EXT_framebuffer_blit")))
+        glExtensions |= FramebufferBlit;
 
     QGLContext cx(QGLFormat::defaultFormat());
     if (glExtensions & TextureCompression) {
@@ -4236,7 +4360,7 @@ void QGLWidgetPrivate::initContext(QGLContext *context, const QGLWidget* shareWi
 }
 
 #if defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_WS_QWS)
-Q_GLOBAL_STATIC(QString, qt_gl_lib_name);
+Q_GLOBAL_STATIC(QString, qt_gl_lib_name)
 
 Q_OPENGL_EXPORT void qt_set_gl_library_name(const QString& name)
 {
@@ -4247,7 +4371,7 @@ Q_OPENGL_EXPORT const QString qt_gl_library_name()
 {
     if (qt_gl_lib_name()->isNull()) {
 #if defined(Q_WS_X11) || defined(Q_WS_QWS)
-        return QString(QLatin1String("GL"));
+        return QLatin1String("GL");
 #else // Q_WS_MAC
         return QLatin1String("/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib");
 #endif
@@ -4256,4 +4380,234 @@ Q_OPENGL_EXPORT const QString qt_gl_library_name()
 }
 #endif
 
+void QGLDrawable::setDevice(QPaintDevice *pdev)
+{
+    wasBound = false;
+    widget = 0;
+    buffer = 0;
+    fbo = 0;
+#ifdef Q_WS_QWS
+    wsurf = 0;
+#endif
+
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    if (pdev->devType() == QInternal::Pixmap) {
+        QPixmapData *data = static_cast<QPixmap *>(pdev)->pixmapData();
+        Q_ASSERT(data->classId() == QPixmapData::OpenGLClass);
+        pixmapData = static_cast<QGLPixmapData *>(data);
+
+        fbo = pixmapData->fbo();
+    }
+#else
+    Q_ASSERT(pdev->devType() != QInternal::Pixmap);
+#endif
+
+    if (pdev->devType() == QInternal::Widget)
+        widget = static_cast<QGLWidget *>(pdev);
+    else if (pdev->devType() == QInternal::Pbuffer)
+        buffer = static_cast<QGLPixelBuffer *>(pdev);
+    else if (pdev->devType() == QInternal::FramebufferObject)
+        fbo = static_cast<QGLFramebufferObject *>(pdev);
+#ifdef Q_WS_QWS
+    else if (pdev->devType() == QInternal::UnknownDevice)
+        wsurf = static_cast<QWSGLPaintDevice*>(pdev)->windowSurface();
+#elif !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    else if (pdev->devType() == QInternal::UnknownDevice)
+        wsurf = static_cast<QGLWindowSurface *>(pdev);
+#endif
+}
+
+void QGLDrawable::swapBuffers()
+{
+    if (widget) {
+        if (widget->autoBufferSwap())
+            widget->swapBuffers();
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    } else if (pixmapData) {
+        pixmapData->swapBuffers();
+#endif
+    } else {
+        glFlush();
+    }
+}
+
+void QGLDrawable::makeCurrent()
+{
+    previous_fbo = 0;
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    if (!pixmapData && !fbo) {
+#else
+    if (!fbo) {
+#endif
+        QGLContext *ctx = context();
+        previous_fbo = ctx->d_ptr->current_fbo;
+        ctx->d_ptr->current_fbo = 0;
+        if (previous_fbo)
+            glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0);
+    }
+
+    if (widget)
+        widget->makeCurrent();
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    else if (pixmapData)
+        pixmapData->makeCurrent();
+#endif
+    else if (buffer)
+        buffer->makeCurrent();
+#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
+    else if (wsurf)
+        wsurf->context()->makeCurrent();
+#endif
+    else if (fbo) {
+        wasBound = fbo->isBound();
+        if (!wasBound)
+            fbo->bind();
+    }
+}
+
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+QGLPixmapData *QGLDrawable::copyOnBegin() const
+{
+    if (!pixmapData || pixmapData->isUninitialized())
+        return 0;
+    return pixmapData;
+}
+#endif
+
+void QGLDrawable::doneCurrent()
+{
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    if (pixmapData) {
+        pixmapData->doneCurrent();
+        return;
+    }
+#endif
+
+    if (previous_fbo) {
+        QGLContext *ctx = context();
+        ctx->d_ptr->current_fbo = previous_fbo;
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, previous_fbo);
+    }
+
+    if (fbo && !wasBound)
+        fbo->release();
+}
+
+QSize QGLDrawable::size() const
+{
+    if (widget) {
+        return QSize(widget->d_func()->glcx->device()->width(),
+                     widget->d_func()->glcx->device()->height());
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    } else if (pixmapData) {
+        return pixmapData->size();
+#endif
+    } else if (buffer) {
+        return buffer->size();
+    } else if (fbo) {
+        return fbo->size();
+    }
+#ifdef Q_WS_QWS
+    else if (wsurf)
+        return wsurf->window()->frameSize();
+#elif !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    else if (wsurf)
+        return QSize(wsurf->width(), wsurf->height());
+#endif
+    return QSize();
+}
+
+QGLFormat QGLDrawable::format() const
+{
+    if (widget)
+        return widget->format();
+    else if (buffer)
+        return buffer->format();
+#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
+    else if (wsurf)
+        return wsurf->context()->format();
+#endif
+    else if (fbo && QGLContext::currentContext()) {
+        QGLFormat fmt = QGLContext::currentContext()->format();
+        fmt.setStencil(fbo->attachment() == QGLFramebufferObject::CombinedDepthStencil);
+        fmt.setDepth(fbo->attachment() != QGLFramebufferObject::NoAttachment);
+        return fmt;
+    }
+
+    return QGLFormat();
+}
+
+GLuint QGLDrawable::bindTexture(const QImage &image, GLenum target, GLint format)
+{
+    if (widget)
+        return widget->d_func()->glcx->d_func()->bindTexture(image, target, format, true);
+    else if (buffer)
+        return buffer->d_func()->qctx->d_func()->bindTexture(image, target, format, true);
+    else if (fbo && QGLContext::currentContext())
+        return const_cast<QGLContext *>(QGLContext::currentContext())->d_func()->bindTexture(image, target, format, true);
+#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
+    else if (wsurf)
+        return wsurf->context()->d_func()->bindTexture(image, target, format, true);
+#endif
+    return 0;
+}
+
+GLuint QGLDrawable::bindTexture(const QPixmap &pixmap, GLenum target, GLint format)
+{
+    if (widget)
+        return widget->d_func()->glcx->d_func()->bindTexture(pixmap, target, format, true);
+    else if (buffer)
+        return buffer->d_func()->qctx->d_func()->bindTexture(pixmap, target, format, true);
+    else if (fbo && QGLContext::currentContext())
+        return const_cast<QGLContext *>(QGLContext::currentContext())->d_func()->bindTexture(pixmap, target, format, true);
+#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
+    else if (wsurf)
+        return wsurf->context()->d_func()->bindTexture(pixmap, target, format, true);
+#endif
+    return 0;
+}
+
+QColor QGLDrawable::backgroundColor() const
+{
+    if (widget)
+        return widget->palette().brush(widget->backgroundRole()).color();
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    else if (pixmapData)
+        return pixmapData->fillColor();
+#endif
+    return QApplication::palette().brush(QPalette::Background).color();
+}
+
+bool QGLDrawable::hasTransparentBackground() const
+{
+    return widget && widget->testAttribute(Qt::WA_TranslucentBackground);
+}
+
+QGLContext *QGLDrawable::context() const
+{
+    if (widget)
+        return widget->d_func()->glcx;
+    else if (buffer)
+        return buffer->d_func()->qctx;
+    else if (fbo)
+        return const_cast<QGLContext *>(QGLContext::currentContext());
+#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
+    else if (wsurf)
+        return wsurf->context();
+#endif
+    return 0;
+}
+
+bool QGLDrawable::autoFillBackground() const
+{
+    if (widget)
+        return widget->autoFillBackground();
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    else if (pixmapData)
+        return pixmapData->needsFill();
+#endif
+    else
+        return false;
+}
+
 QT_END_NAMESPACE
diff --git a/src/opengl/qgl.h b/src/opengl/qgl.h
index b7b2f36..2d987fe 100644
--- a/src/opengl/qgl.h
+++ b/src/opengl/qgl.h
@@ -364,6 +364,7 @@ private:
     friend class QGLWindowSurface;
     friend class QGLPixmapData;
     friend class QGLPixmapFilterBase;
+    friend class QGLTextureGlyphCache;
     friend QGLFormat::OpenGLVersionFlags QGLFormat::openGLVersionFlags();
 #ifdef Q_WS_MAC
 public:
@@ -372,9 +373,9 @@ private:
     friend class QMacGLWindowChangeEvent;
     friend QGLContextPrivate *qt_phonon_get_dptr(const QGLContext *);
 #endif
-#ifdef Q_WS_WIN
     friend class QGLFramebufferObject;
     friend class QGLFramebufferObjectPrivate;
+#ifdef Q_WS_WIN
     friend bool qt_resolve_GLSL_functions(QGLContext *ctx);
     friend bool qt_createGLSLProgram(QGLContext *ctx, GLuint &program, const char *shader_src, GLuint &shader);
 #endif
diff --git a/src/opengl/qgl_egl.cpp b/src/opengl/qgl_egl.cpp
index 98c5710..287c537 100644
--- a/src/opengl/qgl_egl.cpp
+++ b/src/opengl/qgl_egl.cpp
@@ -57,14 +57,14 @@ void qt_egl_set_format(QEglProperties& props, int deviceType, const QGLFormat& f
     // Set the pixel format to that contained in the QGLFormat
     // if the system hasn't already chosen a fixed format to
     // match the pixmap, widget, etc.
-    if (props.value(EGL_RED_SIZE) == EGL_DONT_CARE || f.redBufferSize() != -1)
+    if (props.value(EGL_RED_SIZE) == 0 || f.redBufferSize() != -1)
         props.setValue(EGL_RED_SIZE, f.redBufferSize() == -1 ? 1 : f.redBufferSize());
-    if (props.value(EGL_GREEN_SIZE) == EGL_DONT_CARE || f.greenBufferSize() != -1)
+    if (props.value(EGL_GREEN_SIZE) == 0 || f.greenBufferSize() != -1)
         props.setValue(EGL_GREEN_SIZE, f.greenBufferSize() == -1 ? 1 : f.greenBufferSize());
-    if (props.value(EGL_BLUE_SIZE) == EGL_DONT_CARE || f.blueBufferSize() != -1)
+    if (props.value(EGL_BLUE_SIZE) == 0 || f.blueBufferSize() != -1)
         props.setValue(EGL_BLUE_SIZE, f.blueBufferSize() == -1 ? 1 : f.blueBufferSize());
     if (f.alpha()) {
-        if (props.value(EGL_ALPHA_SIZE) == EGL_DONT_CARE || f.alphaBufferSize() != -1)
+        if (props.value(EGL_ALPHA_SIZE) == 0 || f.alphaBufferSize() != -1)
             props.setValue(EGL_ALPHA_SIZE, f.alphaBufferSize() == -1 ? 1 : f.alphaBufferSize());
     }
 
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h
index 16aaa96..4af8598 100644
--- a/src/opengl/qgl_p.h
+++ b/src/opengl/qgl_p.h
@@ -61,6 +61,10 @@
 #include "QtCore/qhash.h"
 #include "private/qwidget_p.h"
 
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#include "private/qpixmapdata_gl_p.h"
+#endif
+
 #ifndef QT_OPENGL_ES_1_CL
 #define q_vertexType float
 #define q_vertexTypeEnum GL_FLOAT
@@ -239,6 +243,7 @@ public:
     QGLFormat glFormat;
     QGLFormat reqFormat;
     GLuint pbo;
+    GLuint fbo;
 
     uint valid : 1;
     uint sharing : 1;
@@ -255,6 +260,9 @@ public:
     QGLExtensionFuncs extensionFuncs;
     GLint max_texture_size;
 
+    GLuint current_fbo;
+    QPaintEngine *active_engine;
+
 #ifdef Q_WS_WIN
     static inline QGLExtensionFuncs& qt_get_extension_funcs(const QGLContext *ctx) { return ctx->d_ptr->extensionFuncs; }
 #endif
@@ -268,7 +276,7 @@ public:
 };
 
 // ### make QGLContext a QObject in 5.0 and remove the proxy stuff
-class QGLSignalProxy : public QObject
+class Q_OPENGL_EXPORT QGLSignalProxy : public QObject
 {
     Q_OBJECT
 public:
@@ -281,6 +289,54 @@ Q_SIGNALS:
     void aboutToDestroyContext(const QGLContext *context);
 };
 
+class QGLPixelBuffer;
+class QGLFramebufferObject;
+class QWSGLWindowSurface;
+class QGLWindowSurface;
+class QGLDrawable {
+public:
+    QGLDrawable() : widget(0), buffer(0), fbo(0)
+#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL))
+                  , wsurf(0)
+#endif
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+                  , pixmapData(0)
+#endif
+        {}
+    void setDevice(QPaintDevice *pdev);
+    void swapBuffers();
+    void makeCurrent();
+    void doneCurrent();
+    QSize size() const;
+    QGLFormat format() const;
+    GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D, GLint format = GL_RGBA);
+    GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D, GLint format = GL_RGBA);
+    QColor backgroundColor() const;
+    QGLContext *context() const;
+    bool autoFillBackground() const;
+    bool hasTransparentBackground() const;
+
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    QGLPixmapData *copyOnBegin() const;
+#endif
+
+private:
+    bool wasBound;
+    QGLWidget *widget;
+    QGLPixelBuffer *buffer;
+    QGLFramebufferObject *fbo;
+#ifdef Q_WS_QWS
+    QWSGLWindowSurface *wsurf;
+#elif !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    QGLWindowSurface *wsurf;
+#endif
+
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+    QGLPixmapData *pixmapData;
+#endif
+    int previous_fbo;
+};
+
 // GL extension definitions
 class QGLExtensions {
 public:
@@ -296,7 +352,8 @@ public:
         StencilWrap             = 0x00000100,
         PackedDepthStencil      = 0x00000200,
         NVFloatBuffer           = 0x00000400,
-        PixelBufferObject       = 0x00000800
+        PixelBufferObject       = 0x00000800,
+        FramebufferBlit         = 0x00001000
     };
     Q_DECLARE_FLAGS(Extensions, Extension)
 
@@ -371,12 +428,21 @@ private:
 extern Q_OPENGL_EXPORT QGLShareRegister* qgl_share_reg();
 
 #ifdef Q_WS_QWS
-class QOpenGLPaintEngine;
-extern QOpenGLPaintEngine* qt_qgl_paint_engine();
+extern QPaintEngine* qt_qgl_paint_engine();
 
 extern EGLDisplay qt_qgl_egl_display();
 #endif
 
+inline bool qt_gl_preferGL2Engine()
+{
+#if defined(QT_OPENGL_ES_2)
+    return true;
+#else
+    return (QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0)
+           && qgetenv("QT_GL_USE_OPENGL1ENGINE").isEmpty();
+#endif
+}
+
 inline GLenum qt_gl_preferredTextureFormat()
 {
     return QSysInfo::ByteOrder == QSysInfo::BigEndian ? GL_RGBA : GL_BGRA;
@@ -384,12 +450,16 @@ inline GLenum qt_gl_preferredTextureFormat()
 
 inline GLenum qt_gl_preferredTextureTarget()
 {
+#if defined(QT_OPENGL_ES_2)
+    return GL_TEXTURE_2D;
+#else
     return (QGLExtensions::glExtensions & QGLExtensions::TextureRectangle)
+           && !qt_gl_preferGL2Engine()
            ? GL_TEXTURE_RECTANGLE_NV
            : GL_TEXTURE_2D;
+#endif
 }
 
-
 QT_END_NAMESPACE
 
 #endif // QGL_P_H
diff --git a/src/opengl/qgl_x11.cpp b/src/opengl/qgl_x11.cpp
index 7ed7a23..da61634 100644
--- a/src/opengl/qgl_x11.cpp
+++ b/src/opengl/qgl_x11.cpp
@@ -129,7 +129,7 @@ struct QGLCMapCleanupHandler {
     CMapEntryHash *cmap_hash;
     GLCMapHash *qglcmap_hash;
 };
-Q_GLOBAL_STATIC(QGLCMapCleanupHandler, cmap_handler);
+Q_GLOBAL_STATIC(QGLCMapCleanupHandler, cmap_handler)
 
 static void cleanup_cmaps()
 {
@@ -433,7 +433,7 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
         if (!d->gpm)
             return false;
     }
-    QString glxExt = QString(QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS)));
+    QString glxExt = QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS));
     if (glxExt.contains(QLatin1String("GLX_SGI_video_sync"))) {
         if (d->glFormat.swapInterval() == -1)
             d->glFormat.setSwapInterval(0);
@@ -515,11 +515,22 @@ void *QGLContext::chooseVisual()
 void *QGLContext::tryVisual(const QGLFormat& f, int bufDepth)
 {
     Q_D(QGLContext);
-    int spec[40];
+    int spec[45];
     int i = 0;
     spec[i++] = GLX_LEVEL;
     spec[i++] = f.plane();
     const QX11Info *xinfo = qt_x11Info(d->paintDevice);
+    bool useFBConfig = false;
+
+#if defined(GLX_VERSION_1_3) && !defined(QT_NO_XRENDER)
+    QWidget* widget = 0;
+    if (d->paintDevice->devType() == QInternal::Widget)
+        widget = static_cast<QWidget*>(d->paintDevice);
+
+    // Only use glXChooseFBConfig for widgets if we're trying to get an ARGB visual
+    if (widget && widget->testAttribute(Qt::WA_TranslucentBackground) && X11->use_xrender)
+        useFBConfig = true;
+#endif
 
 #if defined(GLX_VERSION_1_1) && defined(GLX_EXT_visual_info)
     static bool useTranspExt = false;
@@ -547,28 +558,41 @@ void *QGLContext::tryVisual(const QGLFormat& f, int bufDepth)
 
         useTranspExtChecked = true;
     }
-    if (f.plane() && useTranspExt) {
+    if (f.plane() && useTranspExt && !useFBConfig) {
         // Required to avoid non-transparent overlay visual(!) on some systems
         spec[i++] = GLX_TRANSPARENT_TYPE_EXT;
         spec[i++] = f.rgba() ? GLX_TRANSPARENT_RGB_EXT : GLX_TRANSPARENT_INDEX_EXT;
     }
 #endif
 
+#if defined(GLX_VERSION_1_3)
+    // GLX_RENDER_TYPE is only in glx >=1.3
+    if (useFBConfig) {
+        spec[i++] = GLX_RENDER_TYPE;
+        spec[i++] = f.rgba() ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
+    }
+#endif
+
     if (f.doubleBuffer())
         spec[i++] = GLX_DOUBLEBUFFER;
+        if (useFBConfig)
+            spec[i++] = True;
     if (f.depth()) {
         spec[i++] = GLX_DEPTH_SIZE;
         spec[i++] = f.depthBufferSize() == -1 ? 1 : f.depthBufferSize();
     }
     if (f.stereo()) {
         spec[i++] = GLX_STEREO;
+        if (useFBConfig)
+            spec[i++] = True;
     }
     if (f.stencil()) {
         spec[i++] = GLX_STENCIL_SIZE;
         spec[i++] = f.stencilBufferSize() == -1 ? 1 : f.stencilBufferSize();
     }
     if (f.rgba()) {
-        spec[i++] = GLX_RGBA;
+        if (!useFBConfig)
+            spec[i++] = GLX_RGBA;
         spec[i++] = GLX_RED_SIZE;
         spec[i++] = f.redBufferSize() == -1 ? 1 : f.redBufferSize();
         spec[i++] = GLX_GREEN_SIZE;
@@ -603,8 +627,86 @@ void *QGLContext::tryVisual(const QGLFormat& f, int bufDepth)
         spec[i++] = f.samples() == -1 ? 4 : f.samples();
     }
 
+#if defined(GLX_VERSION_1_3)
+    if (useFBConfig) {
+        spec[i++] = GLX_DRAWABLE_TYPE;
+        switch(d->paintDevice->devType()) {
+        case QInternal::Pixmap:
+            spec[i++] = GLX_PIXMAP_BIT;
+            break;
+        case QInternal::Pbuffer:
+            spec[i++] = GLX_PBUFFER_BIT;
+            break;
+        default:
+            qWarning("QGLContext: Unknown paint device type %d", d->paintDevice->devType());
+            // Fall-through & assume it's a window
+        case QInternal::Widget:
+            spec[i++] = GLX_WINDOW_BIT;
+            break;
+        };
+    }
+#endif
+
     spec[i] = XNone;
-    return glXChooseVisual(xinfo->display(), xinfo->screen(), spec);
+
+
+    XVisualInfo* chosenVisualInfo = 0;
+
+#if defined(GLX_VERSION_1_3)
+    while (useFBConfig) {
+        GLXFBConfig *configs;
+        int configCount = 0;
+        configs = glXChooseFBConfig(xinfo->display(), xinfo->screen(), spec, &configCount);
+
+        if (!configs)
+            break; // fallback to trying glXChooseVisual
+
+        for (i = 0; i < configCount; ++i) {
+            XVisualInfo* vi;
+            vi = glXGetVisualFromFBConfig(xinfo->display(), configs[i]);
+            if (!vi)
+                continue;
+
+#if !defined(QT_NO_XRENDER)
+            QWidget* w = 0;
+            if (d->paintDevice->devType() == QInternal::Widget)
+                w = static_cast<QWidget*>(d->paintDevice);
+
+            if (w && w->testAttribute(Qt::WA_TranslucentBackground) && f.alpha()) {
+                // Attempt to find a config who's visual has a proper alpha channel
+                XRenderPictFormat *pictFormat;
+                pictFormat = XRenderFindVisualFormat(xinfo->display(), vi->visual);
+
+                if (pictFormat && (pictFormat->type == PictTypeDirect) && pictFormat->direct.alphaMask) {
+                    // The pict format for the visual matching the FBConfig indicates ARGB
+                    if (chosenVisualInfo)
+                        XFree(chosenVisualInfo);
+                    chosenVisualInfo = vi;
+                    break;
+                }
+            } else
+#endif //QT_NO_XRENDER
+            if (chosenVisualInfo) {
+                // If we've got a visual we can use and we're not trying to find one with a
+                // real alpha channel, we might as well just use the one we've got
+                break;
+            }
+
+            if (!chosenVisualInfo)
+                chosenVisualInfo = vi; // Have something to fall back to
+            else
+                XFree(vi);
+        }
+
+        XFree(configs);
+        break;
+    }
+#endif // defined(GLX_VERSION_1_3)
+
+    if (!chosenVisualInfo)
+        chosenVisualInfo = glXChooseVisual(xinfo->display(), xinfo->screen(), spec);
+
+    return chosenVisualInfo;
 }
 
 
@@ -685,7 +787,7 @@ void QGLContext::swapBuffers() const
             static qt_glXWaitVideoSyncSGI glXWaitVideoSyncSGI = 0;
             static bool resolved = false;
             if (!resolved) {
-                QString glxExt = QString(QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS)));
+                QString glxExt = QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS));
                 if (glxExt.contains(QLatin1String("GLX_SGI_video_sync"))) {
 #if defined(Q_OS_LINUX) || defined(Q_OS_BSD4)
                     void *handle = dlopen(NULL, RTLD_LAZY);
@@ -930,7 +1032,7 @@ void *QGLContext::getProcAddress(const QString &proc) const
     if (resolved && !glXGetProcAddressARB)
         return 0;
     if (!glXGetProcAddressARB) {
-        QString glxExt = QString(QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS)));
+        QString glxExt = QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS));
         if (glxExt.contains(QLatin1String("GLX_ARB_get_proc_address"))) {
 #if defined(Q_OS_LINUX) || defined(Q_OS_BSD4)
             void *handle = dlopen(NULL, RTLD_LAZY);
@@ -1173,6 +1275,12 @@ void QGLWidget::setContext(QGLContext *context,
             d_func()->xinfo = parentWidget()->d_func()->xinfo;
     }
 
+    // If the application has set WA_TranslucentBackground and not explicitly set
+    // the alpha buffer size to zero, modify the format so it have an alpha channel
+    QGLFormat& fmt = d->glcx->d_func()->glFormat;
+    if (testAttribute(Qt::WA_TranslucentBackground) && fmt.alphaBufferSize() == -1)
+        fmt.setAlphaBufferSize(1);
+
     bool createFailed = false;
     if (!d->glcx->isValid()) {
         if (!d->glcx->create(shareContext ? shareContext : oldcx))
diff --git a/src/opengl/qgl_x11egl.cpp b/src/opengl/qgl_x11egl.cpp
index 480a2dc..3c745b8 100644
--- a/src/opengl/qgl_x11egl.cpp
+++ b/src/opengl/qgl_x11egl.cpp
@@ -114,13 +114,6 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
         eglSwapInterval(d->eglContext->display(), d->glFormat.swapInterval());
 #endif
 
-    // Create the EGL surface to draw into.
-    if (!d->eglContext->createSurface(device())) {
-        delete d->eglContext;
-        d->eglContext = 0;
-        return false;
-    }
-
     return true;
 }
 
@@ -262,21 +255,125 @@ void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext,
             d_func()->xinfo = parentWidget()->d_func()->xinfo;
     }
 
+    // If the application has set WA_TranslucentBackground and not explicitly set
+    // the alpha buffer size to zero, modify the format so it have an alpha channel
+    QGLFormat& fmt = d->glcx->d_func()->glFormat;
+    if (testAttribute(Qt::WA_TranslucentBackground) && fmt.alphaBufferSize() == -1)
+        fmt.setAlphaBufferSize(1);
+
+    bool createFailed = false;
+    if (!d->glcx->isValid()) {
+        if (!d->glcx->create(shareContext ? shareContext : oldcx))
+            createFailed = true;
+    }
+    if (createFailed) {
+        if (deleteOldContext)
+            delete oldcx;
+        return;
+    }
+
+    if (d->glcx->windowCreated() || d->glcx->deviceIsPixmap()) {
+        if (deleteOldContext)
+            delete oldcx;
+        return;
+    }
+
     bool visible = isVisible();
     if (visible)
         hide();
 
     XVisualInfo vi;
+    memset(&vi, 0, sizeof(XVisualInfo));
+
+    // Check to see if EGL is suggesting an appropriate visual id:
+    EGLint nativeVisualId;
+    QEglContext* qeglCtx = d->glcx->d_func()->eglContext;
+    qeglCtx->configAttrib(EGL_NATIVE_VISUAL_ID, &nativeVisualId);
+    vi.visualid = nativeVisualId;
+
+    if (vi.visualid) {
+        // EGL has suggested a visual id, so get the rest of the visual info for that id:
+        XVisualInfo *chosenVisualInfo;
+        int matchingCount = 0;
+        chosenVisualInfo = XGetVisualInfo(x11Info().display(), VisualIDMask, &vi, &matchingCount);
+        if (chosenVisualInfo) {
+            qDebug("Using X Visual ID (%d) provided by EGL", (int)vi.visualid);
+            vi = *chosenVisualInfo;
+            XFree(chosenVisualInfo);
+        }
+        else {
+            qWarning("Warning: EGL suggested using X visual ID %d for config %d, but this seems to be invalid!",
+                     nativeVisualId, (int)qeglCtx->config());
+            vi.visualid = 0;
+        }
+    }
 
-    int err = XMatchVisualInfo(x11Info().display(), x11Info().screen(), x11Info().depth(), TrueColor, &vi);
-    if (err == 0) {
-        qWarning("Error: Couldn't get a matching X visual for format");
-        return;
+    // If EGL does not know the visual ID, so try to select an appropriate one ourselves, first
+    // using XRender if we're supposed to have an alpha, then falling back to XGetVisualInfo
+
+    bool useArgb = context->format().alpha() && !context->deviceIsPixmap();
+#if !defined(QT_NO_XRENDER)
+    if (vi.visualid == 0 && useArgb) {
+        // Try to use XRender to find an ARGB visual we can use
+        vi.screen  = x11Info().screen();
+        vi.depth   = 32;
+        vi.c_class = TrueColor;
+        XVisualInfo *matchingVisuals;
+        int matchingCount = 0;
+        matchingVisuals = XGetVisualInfo(x11Info().display(),
+                                         VisualScreenMask|VisualDepthMask|VisualClassMask,
+                                         &vi, &matchingCount);
+
+        for (int i = 0; i < matchingCount; ++i) {
+            XRenderPictFormat *format;
+            format = XRenderFindVisualFormat(x11Info().display(), matchingVisuals[i].visual);
+            if (format->type == PictTypeDirect && format->direct.alphaMask) {
+                vi = matchingVisuals[i];
+                qDebug("Using X Visual ID (%d) for ARGB visual as provided by XRender", (int)vi.visualid);
+                break;
+            }
+        }
+        XFree(matchingVisuals);
+    }
+#endif
+
+    if (vi.visualid == 0) {
+        EGLint depth;
+        qeglCtx->configAttrib(EGL_BUFFER_SIZE, &depth);
+        int err;
+        err = XMatchVisualInfo(x11Info().display(), x11Info().screen(), depth, TrueColor, &vi);
+        if (err == 0) {
+            qWarning("Warning: Can't find an X visual which matches the EGL config(%d)'s depth (%d)!",
+                     (int)qeglCtx->config(), depth);
+            depth = x11Info().depth();
+            err = XMatchVisualInfo(x11Info().display(), x11Info().screen(), depth, TrueColor, &vi);
+            if (err == 0) {
+                qWarning("Error: Couldn't get any matching X visual!");
+                return;
+            } else
+                qWarning("         - Falling back to X11 suggested depth (%d)", depth);
+        } else
+            qDebug("Using X Visual ID (%d) for EGL provided depth (%d)", (int)vi.visualid, depth);
+
+        // Don't try to use ARGB now unless the visual is 32-bit - even then it might stil fail :-(
+        if (useArgb)
+            useArgb = vi.depth == 32;
     }
 
+//    qDebug("Visual Info:");
+//    qDebug("   bits_per_rgb=%d", vi.bits_per_rgb);
+//    qDebug("   red_mask=0x%x", vi.red_mask);
+//    qDebug("   green_mask=0x%x", vi.green_mask);
+//    qDebug("   blue_mask=0x%x", vi.blue_mask);
+//    qDebug("   colormap_size=%d", vi.colormap_size);
+//    qDebug("   c_class=%d", vi.c_class);
+//    qDebug("   depth=%d", vi.depth);
+//    qDebug("   screen=%d", vi.screen);
+//    qDebug("   visualid=%d", vi.visualid);
+
     XSetWindowAttributes a;
 
-    Window p = RootWindow(X11->display, vi.screen);
+    Window p = RootWindow(x11Info().display(), x11Info().screen());
     if (parentWidget())
         p = parentWidget()->winId();
 
@@ -284,9 +381,14 @@ void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext,
     a.background_pixel = colmap.pixel(palette().color(backgroundRole()));
     a.border_pixel = colmap.pixel(Qt::black);
 
-    Window w = XCreateWindow(X11->display, p, x(), y(), width(), height(),
-                              0, vi.depth, InputOutput, vi.visual,
-                              CWBackPixel|CWBorderPixel, &a);
+    unsigned int valueMask = CWBackPixel|CWBorderPixel;
+    if(useArgb) {
+        a.colormap = XCreateColormap(x11Info().display(), p, vi.visual, AllocNone);
+        valueMask |= CWColormap;
+    }
+
+    Window w = XCreateWindow(x11Info().display(), p, x(), y(), width(), height(),
+                             0, vi.depth, InputOutput, vi.visual, valueMask, &a);
 
     if (deleteOldContext)
         delete oldcx;
@@ -294,28 +396,20 @@ void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext,
 
     create(w); // Create with the ID of the window we've just created
 
-    d->eglSurfaceWindowId = w; // Remember the window id we created the surface for
-
-    if (visible)
-        show();
 
-    bool createFailed = false;
-    if (!d->glcx->isValid()) {
-        if (!d->glcx->create(shareContext ? shareContext : oldcx))
-            createFailed = true;
-    }
-    if (createFailed) {
-        if (deleteOldContext)
-            delete oldcx;
+    // Create the EGL surface to draw into.
+    if (!d->glcx->d_func()->eglContext->createSurface(this)) {
+        delete d->glcx->d_func()->eglContext;
+        d->glcx->d_func()->eglContext = 0;
         return;
     }
 
-    if (d->glcx->windowCreated() || d->glcx->deviceIsPixmap()) {
-        if (deleteOldContext)
-            delete oldcx;
-        return;
-    }
+    d->eglSurfaceWindowId = w; // Remember the window id we created the surface for
+
+    if (visible)
+        show();
 
+    XFlush(X11->display);
     d->glcx->setWindowCreated(true);
 }
 
diff --git a/src/opengl/qglextensions.cpp b/src/opengl/qglextensions.cpp
index 8357cf9..10ca613 100644
--- a/src/opengl/qglextensions.cpp
+++ b/src/opengl/qglextensions.cpp
@@ -45,9 +45,15 @@ QT_BEGIN_NAMESPACE
 
 bool qt_resolve_framebufferobject_extensions(QGLContext *ctx)
 {
-#if !defined(QT_OPENGL_ES_2)
-    if (glIsRenderbufferEXT != 0)
+#if defined(QT_OPENGL_ES_2)
+    static bool have_resolved = false;
+    if (have_resolved)
+        return true;
+    have_resolved = true;
+#else
+    if (glIsRenderbuffer != 0)
         return true;
+#endif
 
     if (ctx == 0) {
         qWarning("QGLFramebufferObject: Unable to resolve framebuffer object extensions -"
@@ -55,32 +61,37 @@ bool qt_resolve_framebufferobject_extensions(QGLContext *ctx)
         return false;
     }
 
-    glIsRenderbufferEXT = (_glIsRenderbufferEXT) ctx->getProcAddress(QLatin1String("glIsRenderbufferEXT"));
-    glBindRenderbufferEXT = (_glBindRenderbufferEXT) ctx->getProcAddress(QLatin1String("glBindRenderbufferEXT"));
-    glDeleteRenderbuffersEXT = (_glDeleteRenderbuffersEXT) ctx->getProcAddress(QLatin1String("glDeleteRenderbuffersEXT"));
-    glGenRenderbuffersEXT = (_glGenRenderbuffersEXT) ctx->getProcAddress(QLatin1String("glGenRenderbuffersEXT"));
-    glRenderbufferStorageEXT = (_glRenderbufferStorageEXT) ctx->getProcAddress(QLatin1String("glRenderbufferStorageEXT"));
-    glGetRenderbufferParameterivEXT =
-        (_glGetRenderbufferParameterivEXT) ctx->getProcAddress(QLatin1String("glGetRenderbufferParameterivEXT"));
-    glIsFramebufferEXT = (_glIsFramebufferEXT) ctx->getProcAddress(QLatin1String("glIsFramebufferEXT"));
-    glBindFramebufferEXT = (_glBindFramebufferEXT) ctx->getProcAddress(QLatin1String("glBindFramebufferEXT"));
-    glDeleteFramebuffersEXT = (_glDeleteFramebuffersEXT) ctx->getProcAddress(QLatin1String("glDeleteFramebuffersEXT"));
-    glGenFramebuffersEXT = (_glGenFramebuffersEXT) ctx->getProcAddress(QLatin1String("glGenFramebuffersEXT"));
-    glCheckFramebufferStatusEXT = (_glCheckFramebufferStatusEXT) ctx->getProcAddress(QLatin1String("glCheckFramebufferStatusEXT"));
-    glFramebufferTexture1DEXT = (_glFramebufferTexture1DEXT) ctx->getProcAddress(QLatin1String("glFramebufferTexture1DEXT"));
-    glFramebufferTexture2DEXT = (_glFramebufferTexture2DEXT) ctx->getProcAddress(QLatin1String("glFramebufferTexture2DEXT"));
-    glFramebufferTexture3DEXT = (_glFramebufferTexture3DEXT) ctx->getProcAddress(QLatin1String("glFramebufferTexture3DEXT"));
-    glFramebufferRenderbufferEXT = (_glFramebufferRenderbufferEXT) ctx->getProcAddress(QLatin1String("glFramebufferRenderbufferEXT"));
-    glGetFramebufferAttachmentParameterivEXT =
-        (_glGetFramebufferAttachmentParameterivEXT) ctx->getProcAddress(QLatin1String("glGetFramebufferAttachmentParameterivEXT"));
-    glGenerateMipmapEXT = (_glGenerateMipmapEXT) ctx->getProcAddress(QLatin1String("glGenerateMipmapEXT"));
-    return glIsRenderbufferEXT;
+
+    glBlitFramebufferEXT = (_glBlitFramebufferEXT) ctx->getProcAddress(QLatin1String("glBlitFramebufferEXT"));
+    glRenderbufferStorageMultisampleEXT =
+        (_glRenderbufferStorageMultisampleEXT) ctx->getProcAddress(QLatin1String("glRenderbufferStorageMultisampleEXT"));
+
+#if !defined(QT_OPENGL_ES_2)
+    glIsRenderbuffer = (_glIsRenderbuffer) ctx->getProcAddress(QLatin1String("glIsRenderbufferEXT"));
+    glBindRenderbuffer = (_glBindRenderbuffer) ctx->getProcAddress(QLatin1String("glBindRenderbufferEXT"));
+    glDeleteRenderbuffers = (_glDeleteRenderbuffers) ctx->getProcAddress(QLatin1String("glDeleteRenderbuffersEXT"));
+    glGenRenderbuffers = (_glGenRenderbuffers) ctx->getProcAddress(QLatin1String("glGenRenderbuffersEXT"));
+    glRenderbufferStorage = (_glRenderbufferStorage) ctx->getProcAddress(QLatin1String("glRenderbufferStorageEXT"));
+    glGetRenderbufferParameteriv =
+        (_glGetRenderbufferParameteriv) ctx->getProcAddress(QLatin1String("glGetRenderbufferParameterivEXT"));
+    glIsFramebuffer = (_glIsFramebuffer) ctx->getProcAddress(QLatin1String("glIsFramebufferEXT"));
+    glBindFramebuffer = (_glBindFramebuffer) ctx->getProcAddress(QLatin1String("glBindFramebufferEXT"));
+    glDeleteFramebuffers = (_glDeleteFramebuffers) ctx->getProcAddress(QLatin1String("glDeleteFramebuffersEXT"));
+    glGenFramebuffers = (_glGenFramebuffers) ctx->getProcAddress(QLatin1String("glGenFramebuffersEXT"));
+    glCheckFramebufferStatus = (_glCheckFramebufferStatus) ctx->getProcAddress(QLatin1String("glCheckFramebufferStatusEXT"));
+    glFramebufferTexture2D = (_glFramebufferTexture2D) ctx->getProcAddress(QLatin1String("glFramebufferTexture2DEXT"));
+    glFramebufferRenderbuffer = (_glFramebufferRenderbuffer) ctx->getProcAddress(QLatin1String("glFramebufferRenderbufferEXT"));
+    glGetFramebufferAttachmentParameteriv =
+        (_glGetFramebufferAttachmentParameteriv) ctx->getProcAddress(QLatin1String("glGetFramebufferAttachmentParameterivEXT"));
+    glGenerateMipmap = (_glGenerateMipmap) ctx->getProcAddress(QLatin1String("glGenerateMipmapEXT"));
+
+    return glIsRenderbuffer;
 #else
-    Q_UNUSED(ctx);
     return true;
 #endif
 }
 
+#if !defined(QT_OPENGL_ES_2)
 bool qt_resolve_version_1_3_functions(QGLContext *ctx)
 {
     if (glMultiTexCoord4f != 0)
@@ -89,14 +100,12 @@ bool qt_resolve_version_1_3_functions(QGLContext *ctx)
     QGLContext cx(QGLFormat::defaultFormat());
     glMultiTexCoord4f = (_glMultiTexCoord4f) ctx->getProcAddress(QLatin1String("glMultiTexCoord4f"));
 
-#if defined(QT_OPENGL_ES_2)
-    return glMultiTexCoord4f;
-#else
     glActiveTexture = (_glActiveTexture) ctx->getProcAddress(QLatin1String("glActiveTexture"));
     return glMultiTexCoord4f && glActiveTexture;
-#endif
 }
+#endif
 
+#if !defined(QT_OPENGL_ES_2)
 bool qt_resolve_stencil_face_extension(QGLContext *ctx)
 {
     if (glActiveStencilFaceEXT != 0)
@@ -107,7 +116,10 @@ bool qt_resolve_stencil_face_extension(QGLContext *ctx)
 
     return glActiveStencilFaceEXT;
 }
+#endif
 
+
+#if !defined(QT_OPENGL_ES_2)
 bool qt_resolve_frag_program_extensions(QGLContext *ctx)
 {
     if (glProgramStringARB != 0)
@@ -126,60 +138,218 @@ bool qt_resolve_frag_program_extensions(QGLContext *ctx)
         && glGenProgramsARB
         && glProgramLocalParameter4fvARB;
 }
+#endif
+
 
 bool qt_resolve_buffer_extensions(QGLContext *ctx)
 {
-    if (glBindBufferARB && glDeleteBuffersARB && glGenBuffersARB && glBufferDataARB
-        && glMapBufferARB && glUnmapBufferARB)
+    if (glMapBufferARB && glUnmapBufferARB
+#if !defined(QT_OPENGL_ES_2)
+        && glBindBuffer && glDeleteBuffers && glGenBuffers && glBufferData
+#endif
+        )
         return true;
 
-    glBindBufferARB = (_glBindBufferARB) ctx->getProcAddress(QLatin1String("glBindBufferARB"));
-    glDeleteBuffersARB = (_glDeleteBuffersARB) ctx->getProcAddress(QLatin1String("glDeleteBuffersARB"));
-    glGenBuffersARB = (_glGenBuffersARB) ctx->getProcAddress(QLatin1String("glGenBuffersARB"));
-    glBufferDataARB = (_glBufferDataARB) ctx->getProcAddress(QLatin1String("glBufferDataARB"));
+#if !defined(QT_OPENGL_ES_2)
+    glBindBuffer = (_glBindBuffer) ctx->getProcAddress(QLatin1String("glBindBufferARB"));
+    glDeleteBuffers = (_glDeleteBuffers) ctx->getProcAddress(QLatin1String("glDeleteBuffersARB"));
+    glGenBuffers = (_glGenBuffers) ctx->getProcAddress(QLatin1String("glGenBuffersARB"));
+    glBufferData = (_glBufferData) ctx->getProcAddress(QLatin1String("glBufferDataARB"));
+#endif
     glMapBufferARB = (_glMapBufferARB) ctx->getProcAddress(QLatin1String("glMapBufferARB"));
     glUnmapBufferARB = (_glUnmapBufferARB) ctx->getProcAddress(QLatin1String("glUnmapBufferARB"));
 
-    return glBindBufferARB
-        && glDeleteBuffersARB
-        && glGenBuffersARB
-        && glBufferDataARB
-        && glMapBufferARB
-        && glUnmapBufferARB;
+    return glMapBufferARB
+        && glUnmapBufferARB
+#if !defined(QT_OPENGL_ES_2)
+        && glBindBuffer
+        && glDeleteBuffers
+        && glGenBuffers
+        && glBufferData
+#endif
+        ;
 }
 
 bool qt_resolve_glsl_extensions(QGLContext *ctx)
 {
+#if defined(QT_OPENGL_ES_2)
+    // The GLSL shader functions are always present in OpenGL/ES 2.0.
+    // The only exceptions are glGetProgramBinaryOES and glProgramBinaryOES.
+    if (!QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glslResolved) {
+        glGetProgramBinaryOES = (_glGetProgramBinaryOES) ctx->getProcAddress(QLatin1String("glGetProgramBinaryOES"));
+        glProgramBinaryOES = (_glProgramBinaryOES) ctx->getProcAddress(QLatin1String("glProgramBinaryOES"));
+        QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glslResolved = true;
+    }
+    return true;
+#else
     if (glCreateShader)
         return true;
 
     glCreateShader = (_glCreateShader) ctx->getProcAddress(QLatin1String("glCreateShader"));
-    glShaderSource = (_glShaderSource) ctx->getProcAddress(QLatin1String("glShaderSource"));
-    glCompileShader = (_glCompileShader) ctx->getProcAddress(QLatin1String("glCompileShader"));
-    glDeleteShader = (_glDeleteShader) ctx->getProcAddress(QLatin1String("glDeleteShader"));
-
-    glCreateProgram = (_glCreateProgram) ctx->getProcAddress(QLatin1String("glCreateProgram"));
-    glAttachShader = (_glAttachShader) ctx->getProcAddress(QLatin1String("glAttachShader"));
-    glDetachShader = (_glDetachShader) ctx->getProcAddress(QLatin1String("glDetachShader"));
-    glLinkProgram = (_glLinkProgram) ctx->getProcAddress(QLatin1String("glLinkProgram"));
-    glUseProgram = (_glUseProgram) ctx->getProcAddress(QLatin1String("glUseProgram"));
-    glDeleteProgram = (_glDeleteProgram) ctx->getProcAddress(QLatin1String("glDeleteProgram"));
-
-    glGetShaderInfoLog = (_glGetShaderInfoLog) ctx->getProcAddress(QLatin1String("glGetShaderInfoLog"));
-    glGetShaderiv = (_glGetShaderiv) ctx->getProcAddress(QLatin1String("glGetShaderiv"));
-    glGetProgramiv = (_glGetProgramiv) ctx->getProcAddress(QLatin1String("glGetProgramiv"));
-
-    glGetUniformLocation = (_glGetUniformLocation) ctx->getProcAddress(QLatin1String("glGetUniformLocation"));
-    glUniform4fv = (_glUniform4fv) ctx->getProcAddress(QLatin1String("glUniform4fv"));
-    glUniform3fv = (_glUniform3fv) ctx->getProcAddress(QLatin1String("glUniform3fv"));
-    glUniform2fv = (_glUniform2fv) ctx->getProcAddress(QLatin1String("glUniform2fv"));
-    glUniform1fv = (_glUniform1fv) ctx->getProcAddress(QLatin1String("glUniform1fv"));
-    glUniform1i = (_glUniform1i) ctx->getProcAddress(QLatin1String("glUniform1i"));
-
-    return glCreateShader && glShaderSource && glCompileShader && glDeleteProgram &&
-        glCreateProgram && glAttachShader && glDetachShader && glLinkProgram && glUseProgram &&
-        glDeleteProgram && glGetShaderInfoLog && glGetShaderiv && glGetProgramiv && glGetUniformLocation &&
-        glUniform1i && glUniform1fv && glUniform2fv && glUniform3fv && glUniform4fv;
+    if (glCreateShader) {
+        glShaderSource = (_glShaderSource) ctx->getProcAddress(QLatin1String("glShaderSource"));
+        glShaderBinary = (_glShaderBinary) ctx->getProcAddress(QLatin1String("glShaderBinary"));
+        glCompileShader = (_glCompileShader) ctx->getProcAddress(QLatin1String("glCompileShader"));
+        glDeleteShader = (_glDeleteShader) ctx->getProcAddress(QLatin1String("glDeleteShader"));
+        glIsShader = (_glIsShader) ctx->getProcAddress(QLatin1String("glIsShader"));
+
+        glCreateProgram = (_glCreateProgram) ctx->getProcAddress(QLatin1String("glCreateProgram"));
+        glAttachShader = (_glAttachShader) ctx->getProcAddress(QLatin1String("glAttachShader"));
+        glDetachShader = (_glDetachShader) ctx->getProcAddress(QLatin1String("glDetachShader"));
+        glLinkProgram = (_glLinkProgram) ctx->getProcAddress(QLatin1String("glLinkProgram"));
+        glUseProgram = (_glUseProgram) ctx->getProcAddress(QLatin1String("glUseProgram"));
+        glDeleteProgram = (_glDeleteProgram) ctx->getProcAddress(QLatin1String("glDeleteProgram"));
+        glIsProgram = (_glIsProgram) ctx->getProcAddress(QLatin1String("glIsProgram"));
+
+        glGetShaderInfoLog = (_glGetShaderInfoLog) ctx->getProcAddress(QLatin1String("glGetShaderInfoLog"));
+        glGetShaderiv = (_glGetShaderiv) ctx->getProcAddress(QLatin1String("glGetShaderiv"));
+        glGetShaderSource = (_glGetShaderSource) ctx->getProcAddress(QLatin1String("glGetShaderSource"));
+        glGetProgramiv = (_glGetProgramiv) ctx->getProcAddress(QLatin1String("glGetProgramiv"));
+        glGetProgramInfoLog = (_glGetProgramInfoLog) ctx->getProcAddress(QLatin1String("glGetProgramInfoLog"));
+
+        glGetUniformLocation = (_glGetUniformLocation) ctx->getProcAddress(QLatin1String("glGetUniformLocation"));
+        glUniform4fv = (_glUniform4fv) ctx->getProcAddress(QLatin1String("glUniform4fv"));
+        glUniform3fv = (_glUniform3fv) ctx->getProcAddress(QLatin1String("glUniform3fv"));
+        glUniform2fv = (_glUniform2fv) ctx->getProcAddress(QLatin1String("glUniform2fv"));
+        glUniform1fv = (_glUniform1fv) ctx->getProcAddress(QLatin1String("glUniform1fv"));
+        glUniform1i = (_glUniform1i) ctx->getProcAddress(QLatin1String("glUniform1i"));
+        glUniform1iv = (_glUniform1iv) ctx->getProcAddress(QLatin1String("glUniform1iv"));
+        glUniformMatrix2fv = (_glUniformMatrix2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2fv"));
+        glUniformMatrix3fv = (_glUniformMatrix3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3fv"));
+        glUniformMatrix4fv = (_glUniformMatrix4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4fv"));
+        glUniformMatrix2x3fv = (_glUniformMatrix2x3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2x3fv"));
+        glUniformMatrix2x4fv = (_glUniformMatrix2x4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2x4fv"));
+        glUniformMatrix3x2fv = (_glUniformMatrix3x2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3x2fv"));
+        glUniformMatrix3x4fv = (_glUniformMatrix3x4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3x4fv"));
+        glUniformMatrix4x2fv = (_glUniformMatrix4x2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4x2fv"));
+        glUniformMatrix4x3fv = (_glUniformMatrix4x3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4x3fv"));
+
+        glBindAttribLocation = (_glBindAttribLocation) ctx->getProcAddress(QLatin1String("glBindAttribLocation"));
+        glGetAttribLocation = (_glGetAttribLocation) ctx->getProcAddress(QLatin1String("glGetAttribLocation"));
+        glVertexAttrib1fv = (_glVertexAttrib1fv) ctx->getProcAddress(QLatin1String("glVertexAttrib1fv"));
+        glVertexAttrib2fv = (_glVertexAttrib2fv) ctx->getProcAddress(QLatin1String("glVertexAttrib2fv"));
+        glVertexAttrib3fv = (_glVertexAttrib3fv) ctx->getProcAddress(QLatin1String("glVertexAttrib3fv"));
+        glVertexAttrib4fv = (_glVertexAttrib4fv) ctx->getProcAddress(QLatin1String("glVertexAttrib4fv"));
+        glVertexAttribPointer = (_glVertexAttribPointer) ctx->getProcAddress(QLatin1String("glVertexAttribPointer"));
+        glDisableVertexAttribArray = (_glDisableVertexAttribArray) ctx->getProcAddress(QLatin1String("glDisableVertexAttribArray"));
+        glEnableVertexAttribArray = (_glEnableVertexAttribArray) ctx->getProcAddress(QLatin1String("glEnableVertexAttribArray"));
+
+    } else {
+        // We may not have the standard shader functions, but we might
+        // have the older ARB functions instead.
+        glCreateShader = (_glCreateShader) ctx->getProcAddress(QLatin1String("glCreateShaderObjectARB"));
+        glShaderSource = (_glShaderSource) ctx->getProcAddress(QLatin1String("glShaderSourceARB"));
+        glShaderBinary = (_glShaderBinary) ctx->getProcAddress(QLatin1String("glShaderBinaryARB"));
+        glCompileShader = (_glCompileShader) ctx->getProcAddress(QLatin1String("glCompileShaderARB"));
+        glDeleteShader = (_glDeleteShader) ctx->getProcAddress(QLatin1String("glDeleteObjectARB"));
+        glIsShader = 0;
+
+        glCreateProgram = (_glCreateProgram) ctx->getProcAddress(QLatin1String("glCreateProgramObjectARB"));
+        glAttachShader = (_glAttachShader) ctx->getProcAddress(QLatin1String("glAttachObjectARB"));
+        glDetachShader = (_glDetachShader) ctx->getProcAddress(QLatin1String("glDetachObjectARB"));
+        glLinkProgram = (_glLinkProgram) ctx->getProcAddress(QLatin1String("glLinkProgramARB"));
+        glUseProgram = (_glUseProgram) ctx->getProcAddress(QLatin1String("glUseProgramObjectARB"));
+        glDeleteProgram = (_glDeleteProgram) ctx->getProcAddress(QLatin1String("glDeleteObjectARB"));
+        glIsProgram = 0;
+
+        glGetShaderInfoLog = (_glGetShaderInfoLog) ctx->getProcAddress(QLatin1String("glGetInfoLogARB"));
+        glGetShaderiv = (_glGetShaderiv) ctx->getProcAddress(QLatin1String("glGetObjectParameterivARB"));
+        glGetShaderSource = (_glGetShaderSource) ctx->getProcAddress(QLatin1String("glGetShaderSourceARB"));
+        glGetProgramiv = (_glGetProgramiv) ctx->getProcAddress(QLatin1String("glGetObjectParameterivARB"));
+        glGetProgramInfoLog = (_glGetProgramInfoLog) ctx->getProcAddress(QLatin1String("glGetInfoLogARB"));
+
+        glGetUniformLocation = (_glGetUniformLocation) ctx->getProcAddress(QLatin1String("glGetUniformLocationARB"));
+        glUniform4fv = (_glUniform4fv) ctx->getProcAddress(QLatin1String("glUniform4fvARB"));
+        glUniform3fv = (_glUniform3fv) ctx->getProcAddress(QLatin1String("glUniform3fvARB"));
+        glUniform2fv = (_glUniform2fv) ctx->getProcAddress(QLatin1String("glUniform2fvARB"));
+        glUniform1fv = (_glUniform1fv) ctx->getProcAddress(QLatin1String("glUniform1fvARB"));
+        glUniform1i = (_glUniform1i) ctx->getProcAddress(QLatin1String("glUniform1iARB"));
+        glUniform1iv = (_glUniform1iv) ctx->getProcAddress(QLatin1String("glUniform1ivARB"));
+        glUniformMatrix2fv = (_glUniformMatrix2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2fvARB"));
+        glUniformMatrix3fv = (_glUniformMatrix3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3fvARB"));
+        glUniformMatrix4fv = (_glUniformMatrix4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4fvARB"));
+        glUniformMatrix2x3fv = (_glUniformMatrix2x3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2x3fvARB"));
+        glUniformMatrix2x4fv = (_glUniformMatrix2x4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix2x4fvARB"));
+        glUniformMatrix3x2fv = (_glUniformMatrix3x2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3x2fvARB"));
+        glUniformMatrix3x4fv = (_glUniformMatrix3x4fv) ctx->getProcAddress(QLatin1String("glUniformMatrix3x4fvARB"));
+        glUniformMatrix4x2fv = (_glUniformMatrix4x2fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4x2fvARB"));
+        glUniformMatrix4x3fv = (_glUniformMatrix4x3fv) ctx->getProcAddress(QLatin1String("glUniformMatrix4x3fvARB"));
+
+        glBindAttribLocation = (_glBindAttribLocation) ctx->getProcAddress(QLatin1String("glBindAttribLocationARB"));
+        glGetAttribLocation = (_glGetAttribLocation) ctx->getProcAddress(QLatin1String("glGetAttribLocationARB"));
+        glVertexAttrib1fv = (_glVertexAttrib1fv) ctx->getProcAddress(QLatin1String("glVertexAttrib1fvARB"));
+        glVertexAttrib2fv = (_glVertexAttrib2fv) ctx->getProcAddress(QLatin1String("glVertexAttrib2fvARB"));
+        glVertexAttrib3fv = (_glVertexAttrib3fv) ctx->getProcAddress(QLatin1String("glVertexAttrib3fvARB"));
+        glVertexAttrib4fv = (_glVertexAttrib4fv) ctx->getProcAddress(QLatin1String("glVertexAttrib4fvARB"));
+        glVertexAttribPointer = (_glVertexAttribPointer) ctx->getProcAddress(QLatin1String("glVertexAttribPointerARB"));
+        glDisableVertexAttribArray = (_glDisableVertexAttribArray) ctx->getProcAddress(QLatin1String("glDisableVertexAttribArrayARB"));
+        glEnableVertexAttribArray = (_glEnableVertexAttribArray) ctx->getProcAddress(QLatin1String("glEnableVertexAttribArrayARB"));
+    }
+
+    // Note: glShaderBinary(), glIsShader(), glIsProgram(), and
+    // glUniformMatrixNxMfv() are optional, but all other functions
+    // are required.
+
+    return glCreateShader &&
+        glShaderSource &&
+        glCompileShader &&
+        glDeleteProgram &&
+        glCreateProgram &&
+        glAttachShader &&
+        glDetachShader &&
+        glLinkProgram &&
+        glUseProgram &&
+        glDeleteProgram &&
+        glGetShaderInfoLog &&
+        glGetShaderiv &&
+        glGetShaderSource &&
+        glGetProgramiv &&
+        glGetProgramInfoLog &&
+        glGetUniformLocation &&
+        glUniform1fv &&
+        glUniform2fv &&
+        glUniform3fv &&
+        glUniform4fv &&
+        glUniform1i &&
+        glUniform1iv &&
+        glUniformMatrix2fv &&
+        glUniformMatrix3fv &&
+        glUniformMatrix4fv &&
+        glBindAttribLocation &&
+        glGetAttribLocation &&
+        glVertexAttrib1fv &&
+        glVertexAttrib2fv &&
+        glVertexAttrib3fv &&
+        glVertexAttrib4fv &&
+        glVertexAttribPointer &&
+        glDisableVertexAttribArray &&
+        glEnableVertexAttribArray;
+#endif
 }
 
+#if !defined(QT_OPENGL_ES_2)
+bool qt_resolve_version_2_0_functions(QGLContext *ctx)
+{
+    bool gl2supported = true;
+    if (!qt_resolve_glsl_extensions(ctx))
+        gl2supported = false;
+
+    if (!qt_resolve_version_1_3_functions(ctx))
+        gl2supported = false;
+
+    if (!qt_resolve_framebufferobject_extensions(ctx))
+        gl2supported = false;
+
+    if (glStencilOpSeparate)
+        return gl2supported;
+
+    glStencilOpSeparate = (_glStencilOpSeparate) ctx->getProcAddress(QLatin1String("glStencilOpSeparate"));
+    if (!glStencilOpSeparate)
+        gl2supported = false;
+
+    return gl2supported;
+}
+#endif
+
+
 QT_END_NAMESPACE
diff --git a/src/opengl/qglextensions_p.h b/src/opengl/qglextensions_p.h
index a0517f5..d6edfb6 100644
--- a/src/opengl/qglextensions_p.h
+++ b/src/opengl/qglextensions_p.h
@@ -74,11 +74,15 @@
 typedef ptrdiff_t GLsizeiptrARB;
 #endif
 
+#ifndef GL_VERSION_2_0
+typedef char GLchar;
+#endif
+
 // ARB_pixel_buffer_object
-typedef void (APIENTRY *_glBindBufferARB) (GLenum, GLuint);
-typedef void (APIENTRY *_glDeleteBuffersARB) (GLsizei, const GLuint *);
-typedef void (APIENTRY *_glGenBuffersARB) (GLsizei, GLuint *);
-typedef void (APIENTRY *_glBufferDataARB) (GLenum, GLsizeiptrARB, const GLvoid *, GLenum);
+typedef void (APIENTRY *_glBindBuffer) (GLenum, GLuint);
+typedef void (APIENTRY *_glDeleteBuffers) (GLsizei, const GLuint *);
+typedef void (APIENTRY *_glGenBuffers) (GLsizei, GLuint *);
+typedef void (APIENTRY *_glBufferData) (GLenum, GLsizeiptrARB, const GLvoid *, GLenum);
 typedef GLvoid* (APIENTRY *_glMapBufferARB) (GLenum, GLenum);
 typedef GLboolean (APIENTRY *_glUnmapBufferARB) (GLenum);
 
@@ -92,8 +96,10 @@ typedef void (APIENTRY *_glProgramLocalParameter4fvARB) (GLenum, GLuint, const G
 // GLSL
 typedef GLuint (APIENTRY *_glCreateShader) (GLenum);
 typedef void (APIENTRY *_glShaderSource) (GLuint, GLsizei, const char **, const GLint *);
+typedef void (APIENTRY *_glShaderBinary) (GLint, const GLuint*, GLenum, const void*, GLint);
 typedef void (APIENTRY *_glCompileShader) (GLuint);
 typedef void (APIENTRY *_glDeleteShader) (GLuint);
+typedef GLboolean (APIENTRY *_glIsShader) (GLuint);
 
 typedef GLuint (APIENTRY *_glCreateProgram) ();
 typedef void (APIENTRY *_glAttachShader) (GLuint, GLuint);
@@ -101,62 +107,101 @@ typedef void (APIENTRY *_glDetachShader) (GLuint, GLuint);
 typedef void (APIENTRY *_glLinkProgram) (GLuint);
 typedef void (APIENTRY *_glUseProgram) (GLuint);
 typedef void (APIENTRY *_glDeleteProgram) (GLuint);
+typedef GLboolean (APIENTRY *_glIsProgram) (GLuint);
 
 typedef void (APIENTRY *_glGetShaderInfoLog) (GLuint, GLsizei, GLsizei *, char *);
 typedef void (APIENTRY *_glGetShaderiv) (GLuint, GLenum, GLint *);
+typedef void (APIENTRY *_glGetShaderSource) (GLuint, GLsizei, GLsizei *, char *);
 typedef void (APIENTRY *_glGetProgramiv) (GLuint, GLenum, GLint *);
+typedef void (APIENTRY *_glGetProgramInfoLog) (GLuint, GLsizei, GLsizei *, char *);
 
 typedef GLuint (APIENTRY *_glGetUniformLocation) (GLuint, const char*);
-typedef void (APIENTRY *_glUniform4fv) (GLint, GLsizei, GLfloat *);
-typedef void (APIENTRY *_glUniform3fv) (GLint, GLsizei, GLfloat *);
-typedef void (APIENTRY *_glUniform2fv) (GLint, GLsizei, GLfloat *);
-typedef void (APIENTRY *_glUniform1fv) (GLint, GLsizei, GLfloat *);
+typedef void (APIENTRY *_glUniform4fv) (GLint, GLsizei, const GLfloat *);
+typedef void (APIENTRY *_glUniform3fv) (GLint, GLsizei, const GLfloat *);
+typedef void (APIENTRY *_glUniform2fv) (GLint, GLsizei, const GLfloat *);
+typedef void (APIENTRY *_glUniform1fv) (GLint, GLsizei, const GLfloat *);
 typedef void (APIENTRY *_glUniform1i) (GLint, GLint);
+typedef void (APIENTRY *_glUniform1iv) (GLint, GLsizei, const GLint *);
+typedef void (APIENTRY *_glUniformMatrix2fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix3fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix4fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix2x3fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix2x4fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix3x2fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix3x4fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix4x2fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+typedef void (APIENTRY *_glUniformMatrix4x3fv) (GLint, GLsizei, GLboolean, const GLfloat *);
+
+typedef void (APIENTRY *_glBindAttribLocation) (GLuint, GLuint, const char *);
+typedef GLint (APIENTRY *_glGetAttribLocation) (GLuint, const char *);
+typedef void (APIENTRY *_glVertexAttrib1fv) (GLuint, const GLfloat *);
+typedef void (APIENTRY *_glVertexAttrib2fv) (GLuint, const GLfloat *);
+typedef void (APIENTRY *_glVertexAttrib3fv) (GLuint, const GLfloat *);
+typedef void (APIENTRY *_glVertexAttrib4fv) (GLuint, const GLfloat *);
+typedef void (APIENTRY *_glVertexAttribPointer) (GLuint, GLint, GLenum, GLboolean, GLsizei, const GLvoid *);
+typedef void (APIENTRY *_glDisableVertexAttribArray) (GLuint);
+typedef void (APIENTRY *_glEnableVertexAttribArray) (GLuint);
+
+typedef void (APIENTRY *_glGetProgramBinaryOES) (GLuint, GLsizei, GLsizei *, GLenum *, void *);
+typedef void (APIENTRY *_glProgramBinaryOES) (GLuint, GLenum, const void *, GLint);
 
-typedef void (APIENTRY *_glActiveStencilFaceEXT) (GLenum );
 
 typedef void (APIENTRY *_glMultiTexCoord4f) (GLenum, GLfloat, GLfloat, GLfloat, GLfloat);
+typedef void (APIENTRY *_glActiveStencilFaceEXT) (GLenum );
+
+// Needed for GL2 engine:
+typedef void (APIENTRY *_glStencilOpSeparate) (GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass);
 typedef void (APIENTRY *_glActiveTexture) (GLenum);
 
+
 // EXT_GL_framebuffer_object
-typedef GLboolean (APIENTRY *_glIsRenderbufferEXT) (GLuint renderbuffer);
-typedef void (APIENTRY *_glBindRenderbufferEXT) (GLenum target, GLuint renderbuffer);
-typedef void (APIENTRY *_glDeleteRenderbuffersEXT) (GLsizei n, const GLuint *renderbuffers);
-typedef void (APIENTRY *_glGenRenderbuffersEXT) (GLsizei n, GLuint *renderbuffers);
-typedef void (APIENTRY *_glRenderbufferStorageEXT) (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
-typedef void (APIENTRY *_glGetRenderbufferParameterivEXT) (GLenum target, GLenum pname, GLint *params);
-typedef GLboolean (APIENTRY *_glIsFramebufferEXT) (GLuint framebuffer);
-typedef void (APIENTRY *_glBindFramebufferEXT) (GLenum target, GLuint framebuffer);
-typedef void (APIENTRY *_glDeleteFramebuffersEXT) (GLsizei n, const GLuint *framebuffers);
-typedef void (APIENTRY *_glGenFramebuffersEXT) (GLsizei n, GLuint *framebuffers);
-typedef GLenum (APIENTRY *_glCheckFramebufferStatusEXT) (GLenum target);
-typedef void (APIENTRY *_glFramebufferTexture1DEXT) (GLenum target, GLenum attachment, GLenum textarget,
-                                                           GLuint texture, GLint level);
-typedef void (APIENTRY *_glFramebufferTexture2DEXT) (GLenum target, GLenum attachment, GLenum textarget,
+typedef GLboolean (APIENTRY *_glIsRenderbuffer) (GLuint renderbuffer);
+typedef void (APIENTRY *_glBindRenderbuffer) (GLenum target, GLuint renderbuffer);
+typedef void (APIENTRY *_glDeleteRenderbuffers) (GLsizei n, const GLuint *renderbuffers);
+typedef void (APIENTRY *_glGenRenderbuffers) (GLsizei n, GLuint *renderbuffers);
+typedef void (APIENTRY *_glRenderbufferStorage) (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (APIENTRY *_glGetRenderbufferParameteriv) (GLenum target, GLenum pname, GLint *params);
+typedef GLboolean (APIENTRY *_glIsFramebuffer) (GLuint framebuffer);
+typedef void (APIENTRY *_glBindFramebuffer) (GLenum target, GLuint framebuffer);
+typedef void (APIENTRY *_glDeleteFramebuffers) (GLsizei n, const GLuint *framebuffers);
+typedef void (APIENTRY *_glGenFramebuffers) (GLsizei n, GLuint *framebuffers);
+typedef GLenum (APIENTRY *_glCheckFramebufferStatus) (GLenum target);
+typedef void (APIENTRY *_glFramebufferTexture2D) (GLenum target, GLenum attachment, GLenum textarget,
                                                            GLuint texture, GLint level);
-typedef void (APIENTRY *_glFramebufferTexture3DEXT) (GLenum target, GLenum attachment, GLenum textarget,
-                                                           GLuint texture, GLint level, GLint zoffset);
-typedef void (APIENTRY *_glFramebufferRenderbufferEXT) (GLenum target, GLenum attachment, GLenum renderbuffertarget,
+typedef void (APIENTRY *_glFramebufferRenderbuffer) (GLenum target, GLenum attachment, GLenum renderbuffertarget,
                                                               GLuint renderbuffer);
-typedef void (APIENTRY *_glGetFramebufferAttachmentParameterivEXT) (GLenum target, GLenum attachment, GLenum pname,
+typedef void (APIENTRY *_glGetFramebufferAttachmentParameteriv) (GLenum target, GLenum attachment, GLenum pname,
                                                                           GLint *params);
-typedef void (APIENTRY *_glGenerateMipmapEXT) (GLenum target);
+typedef void (APIENTRY *_glGenerateMipmap) (GLenum target);
+
+// EXT_GL_framebuffer_blit
+typedef void (APIENTRY *_glBlitFramebufferEXT) (int srcX0, int srcY0, int srcX1, int srcY1,
+                                                int dstX0, int dstY0, int dstX1, int dstY1,
+                                                GLbitfield mask, GLenum filter);
+
+// EXT_GL_framebuffer_multisample
+typedef void (APIENTRY *_glRenderbufferStorageMultisampleEXT) (GLenum target, GLsizei samples,
+                                                               GLenum internalformat, GLsizei width, GLsizei height);
 
 QT_BEGIN_NAMESPACE
 
 struct QGLExtensionFuncs
 {
     QGLExtensionFuncs() {
+#if !defined(QT_OPENGL_ES_2)
         qt_glProgramStringARB = 0;
         qt_glBindProgramARB = 0;
         qt_glDeleteProgramsARB = 0;
         qt_glGenProgramsARB = 0;
         qt_glProgramLocalParameter4fvARB = 0;
 
+        // GLSL
         qt_glCreateShader = 0;
         qt_glShaderSource = 0;
+        qt_glShaderBinary = 0;
         qt_glCompileShader = 0;
         qt_glDeleteShader = 0;
+        qt_glIsShader = 0;
 
         qt_glCreateProgram = 0;
         qt_glAttachShader = 0;
@@ -164,10 +209,13 @@ struct QGLExtensionFuncs
         qt_glLinkProgram = 0;
         qt_glUseProgram = 0;
         qt_glDeleteProgram = 0;
+        qt_glIsProgram = 0;
 
         qt_glGetShaderInfoLog = 0;
         qt_glGetShaderiv = 0;
+        qt_glGetShaderSource = 0;
         qt_glGetProgramiv = 0;
+        qt_glGetProgramInfoLog = 0;
 
         qt_glGetUniformLocation = 0;
         qt_glUniform4fv = 0;
@@ -175,40 +223,74 @@ struct QGLExtensionFuncs
         qt_glUniform2fv = 0;
         qt_glUniform1fv = 0;
         qt_glUniform1i = 0;
+        qt_glUniform1iv = 0;
+        qt_glUniformMatrix2fv = 0;
+        qt_glUniformMatrix3fv = 0;
+        qt_glUniformMatrix4fv = 0;
+        qt_glUniformMatrix2x3fv = 0;
+        qt_glUniformMatrix2x4fv = 0;
+        qt_glUniformMatrix3x2fv = 0;
+        qt_glUniformMatrix3x4fv = 0;
+        qt_glUniformMatrix4x2fv = 0;
+        qt_glUniformMatrix4x3fv = 0;
+
+        qt_glBindAttribLocation = 0;
+        qt_glGetAttribLocation = 0;
+        qt_glVertexAttrib1fv = 0;
+        qt_glVertexAttrib2fv = 0;
+        qt_glVertexAttrib3fv = 0;
+        qt_glVertexAttrib4fv = 0;
+        qt_glVertexAttribPointer = 0;
+        qt_glDisableVertexAttribArray = 0;
+        qt_glEnableVertexAttribArray = 0;
+
+        // Extras for GL2 engine:
+        qt_glActiveTexture = 0;
+        qt_glStencilOpSeparate = 0;
 
         qt_glActiveStencilFaceEXT = 0;
-
         qt_glMultiTexCoord4f = 0;
-        qt_glActiveTexture = 0;
+#else
+        qt_glslResolved = false;
+
+        qt_glGetProgramBinaryOES = 0;
+        qt_glProgramBinaryOES = 0;
+#endif
 
+        // FBOs
 #if !defined(QT_OPENGL_ES_2)
-        qt_glIsRenderbufferEXT = 0;
-        qt_glBindRenderbufferEXT = 0;
-        qt_glDeleteRenderbuffersEXT = 0;
-        qt_glGenRenderbuffersEXT = 0;
-        qt_glRenderbufferStorageEXT = 0;
-        qt_glGetRenderbufferParameterivEXT = 0;
-        qt_glIsFramebufferEXT = 0;
-        qt_glBindFramebufferEXT = 0;
-        qt_glDeleteFramebuffersEXT = 0;
-        qt_glGenFramebuffersEXT = 0;
-        qt_glCheckFramebufferStatusEXT = 0;
-        qt_glFramebufferTexture1DEXT = 0;
-        qt_glFramebufferTexture2DEXT = 0;
-        qt_glFramebufferTexture3DEXT = 0;
-        qt_glFramebufferRenderbufferEXT = 0;
-        qt_glGetFramebufferAttachmentParameterivEXT = 0;
-        qt_glGenerateMipmapEXT = 0;
-#endif
-
-        qt_glBindBufferARB = 0;
-        qt_glDeleteBuffersARB = 0;
-        qt_glGenBuffersARB = 0;
-        qt_glBufferDataARB = 0;
+        qt_glIsRenderbuffer = 0;
+        qt_glBindRenderbuffer = 0;
+        qt_glDeleteRenderbuffers = 0;
+        qt_glGenRenderbuffers = 0;
+        qt_glRenderbufferStorage = 0;
+        qt_glGetRenderbufferParameteriv = 0;
+        qt_glIsFramebuffer = 0;
+        qt_glBindFramebuffer = 0;
+        qt_glDeleteFramebuffers = 0;
+        qt_glGenFramebuffers = 0;
+        qt_glCheckFramebufferStatus = 0;
+        qt_glFramebufferTexture2D = 0;
+        qt_glFramebufferRenderbuffer = 0;
+        qt_glGetFramebufferAttachmentParameteriv = 0;
+        qt_glGenerateMipmap = 0;
+#endif
+        qt_glBlitFramebufferEXT = 0;
+        qt_glRenderbufferStorageMultisampleEXT = 0;
+
+        // Buffer objects:
+#if !defined(QT_OPENGL_ES_2)
+        qt_glBindBuffer = 0;
+        qt_glDeleteBuffers = 0;
+        qt_glGenBuffers = 0;
+        qt_glBufferData = 0;
+#endif
         qt_glMapBufferARB = 0;
         qt_glUnmapBufferARB = 0;
     }
 
+
+#if !defined(QT_OPENGL_ES_2)
     _glProgramStringARB qt_glProgramStringARB;
     _glBindProgramARB qt_glBindProgramARB;
     _glDeleteProgramsARB qt_glDeleteProgramsARB;
@@ -218,8 +300,10 @@ struct QGLExtensionFuncs
     // GLSL definitions
     _glCreateShader qt_glCreateShader;
     _glShaderSource qt_glShaderSource;
+    _glShaderBinary qt_glShaderBinary;
     _glCompileShader qt_glCompileShader;
     _glDeleteShader qt_glDeleteShader;
+    _glIsShader qt_glIsShader;
 
     _glCreateProgram qt_glCreateProgram;
     _glAttachShader qt_glAttachShader;
@@ -227,10 +311,13 @@ struct QGLExtensionFuncs
     _glLinkProgram qt_glLinkProgram;
     _glUseProgram qt_glUseProgram;
     _glDeleteProgram qt_glDeleteProgram;
+    _glIsProgram qt_glIsProgram;
 
     _glGetShaderInfoLog qt_glGetShaderInfoLog;
     _glGetShaderiv qt_glGetShaderiv;
+    _glGetShaderSource qt_glGetShaderSource;
     _glGetProgramiv qt_glGetProgramiv;
+    _glGetProgramInfoLog qt_glGetProgramInfoLog;
 
     _glGetUniformLocation qt_glGetUniformLocation;
     _glUniform4fv qt_glUniform4fv;
@@ -238,38 +325,74 @@ struct QGLExtensionFuncs
     _glUniform2fv qt_glUniform2fv;
     _glUniform1fv qt_glUniform1fv;
     _glUniform1i qt_glUniform1i;
+    _glUniform1iv qt_glUniform1iv;
+    _glUniformMatrix2fv qt_glUniformMatrix2fv;
+    _glUniformMatrix3fv qt_glUniformMatrix3fv;
+    _glUniformMatrix4fv qt_glUniformMatrix4fv;
+    _glUniformMatrix2x3fv qt_glUniformMatrix2x3fv;
+    _glUniformMatrix2x4fv qt_glUniformMatrix2x4fv;
+    _glUniformMatrix3x2fv qt_glUniformMatrix3x2fv;
+    _glUniformMatrix3x4fv qt_glUniformMatrix3x4fv;
+    _glUniformMatrix4x2fv qt_glUniformMatrix4x2fv;
+    _glUniformMatrix4x3fv qt_glUniformMatrix4x3fv;
+
+    _glBindAttribLocation qt_glBindAttribLocation;
+    _glGetAttribLocation qt_glGetAttribLocation;
+    _glVertexAttrib1fv qt_glVertexAttrib1fv;
+    _glVertexAttrib2fv qt_glVertexAttrib2fv;
+    _glVertexAttrib3fv qt_glVertexAttrib3fv;
+    _glVertexAttrib4fv qt_glVertexAttrib4fv;
+    _glVertexAttribPointer qt_glVertexAttribPointer;
+    _glDisableVertexAttribArray qt_glDisableVertexAttribArray;
+    _glEnableVertexAttribArray qt_glEnableVertexAttribArray;
 
-    _glActiveStencilFaceEXT qt_glActiveStencilFaceEXT;
+#else
+    bool qt_glslResolved;
+
+    _glGetProgramBinaryOES qt_glGetProgramBinaryOES;
+    _glProgramBinaryOES qt_glProgramBinaryOES;
+#endif
 
+    _glActiveStencilFaceEXT qt_glActiveStencilFaceEXT;
     _glMultiTexCoord4f qt_glMultiTexCoord4f;
+
+#if !defined(QT_OPENGL_ES_2)
+    // Extras needed for GL2 engine:
     _glActiveTexture qt_glActiveTexture;
+    _glStencilOpSeparate qt_glStencilOpSeparate;
+#endif
 
+    // FBOs
 #if !defined(QT_OPENGL_ES_2)
-    _glIsRenderbufferEXT qt_glIsRenderbufferEXT;
-    _glBindRenderbufferEXT qt_glBindRenderbufferEXT;
-    _glDeleteRenderbuffersEXT qt_glDeleteRenderbuffersEXT;
-    _glGenRenderbuffersEXT qt_glGenRenderbuffersEXT;
-    _glRenderbufferStorageEXT qt_glRenderbufferStorageEXT;
-    _glGetRenderbufferParameterivEXT qt_glGetRenderbufferParameterivEXT;
-    _glIsFramebufferEXT qt_glIsFramebufferEXT;
-    _glBindFramebufferEXT qt_glBindFramebufferEXT;
-    _glDeleteFramebuffersEXT qt_glDeleteFramebuffersEXT;
-    _glGenFramebuffersEXT qt_glGenFramebuffersEXT;
-    _glCheckFramebufferStatusEXT qt_glCheckFramebufferStatusEXT;
-    _glFramebufferTexture1DEXT qt_glFramebufferTexture1DEXT;
-    _glFramebufferTexture2DEXT qt_glFramebufferTexture2DEXT;
-    _glFramebufferTexture3DEXT qt_glFramebufferTexture3DEXT;
-    _glFramebufferRenderbufferEXT qt_glFramebufferRenderbufferEXT;
-    _glGetFramebufferAttachmentParameterivEXT qt_glGetFramebufferAttachmentParameterivEXT;
-    _glGenerateMipmapEXT qt_glGenerateMipmapEXT;
-#endif
-
-    _glBindBufferARB qt_glBindBufferARB;
-    _glDeleteBuffersARB qt_glDeleteBuffersARB;
-    _glGenBuffersARB qt_glGenBuffersARB;
-    _glBufferDataARB qt_glBufferDataARB;
+    _glIsRenderbuffer qt_glIsRenderbuffer;
+    _glBindRenderbuffer qt_glBindRenderbuffer;
+    _glDeleteRenderbuffers qt_glDeleteRenderbuffers;
+    _glGenRenderbuffers qt_glGenRenderbuffers;
+    _glRenderbufferStorage qt_glRenderbufferStorage;
+    _glGetRenderbufferParameteriv qt_glGetRenderbufferParameteriv;
+    _glIsFramebuffer qt_glIsFramebuffer;
+    _glBindFramebuffer qt_glBindFramebuffer;
+    _glDeleteFramebuffers qt_glDeleteFramebuffers;
+    _glGenFramebuffers qt_glGenFramebuffers;
+    _glCheckFramebufferStatus qt_glCheckFramebufferStatus;
+    _glFramebufferTexture2D qt_glFramebufferTexture2D;
+    _glFramebufferRenderbuffer qt_glFramebufferRenderbuffer;
+    _glGetFramebufferAttachmentParameteriv qt_glGetFramebufferAttachmentParameteriv;
+    _glGenerateMipmap qt_glGenerateMipmap;
+#endif
+    _glBlitFramebufferEXT qt_glBlitFramebufferEXT;
+    _glRenderbufferStorageMultisampleEXT qt_glRenderbufferStorageMultisampleEXT;
+
+    // Buffer objects
+#if !defined(QT_OPENGL_ES_2)
+    _glBindBuffer qt_glBindBuffer;
+    _glDeleteBuffers qt_glDeleteBuffers;
+    _glGenBuffers qt_glGenBuffers;
+    _glBufferData qt_glBufferData;
+#endif
     _glMapBufferARB qt_glMapBufferARB;
     _glUnmapBufferARB qt_glUnmapBufferARB;
+
 };
 
 
@@ -397,6 +520,28 @@ struct QGLExtensionFuncs
 #define GL_RENDERBUFFER_STENCIL_SIZE_EXT                        0x8D55
 #endif
 
+// GL_EXT_framebuffer_blit
+#ifndef GL_READ_FRAMEBUFFER_EXT
+#define GL_READ_FRAMEBUFFER_EXT                                 0x8CA8
+#endif
+
+// GL_EXT_framebuffer_multisample
+#ifndef GL_RENDERBUFFER_SAMPLES_EXT
+#define GL_RENDERBUFFER_SAMPLES_EXT                             0x8CAB
+#endif
+
+#ifndef GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT               0x8D56
+#endif
+
+#ifndef GL_MAX_SAMPLES_EXT
+#define GL_MAX_SAMPLES_EXT                                      0x8D5
+#endif
+
+#ifndef GL_DRAW_FRAMEBUFFER_EXT
+#define GL_DRAW_FRAMEBUFFER_EXT                                 0x8CA9
+#endif
+
 #ifndef GL_EXT_packed_depth_stencil
 #define GL_DEPTH_STENCIL_EXT                                    0x84F9
 #define GL_UNSIGNED_INT_24_8_EXT                                0x84FA
@@ -416,6 +561,42 @@ struct QGLExtensionFuncs
 #define GL_UNPACK_IMAGE_HEIGHT            0x806E
 #endif
 
+#ifndef GL_VERSION_1_4
+#define GL_INCR_WRAP 0x8507
+#define GL_DECR_WRAP 0x8508
+#endif
+
+#ifndef GL_VERSION_2_0
+#define GL_FRAGMENT_SHADER 0x8B30
+#define GL_VERTEX_SHADER 0x8B31
+#define GL_FLOAT_VEC2 0x8B50
+#define GL_FLOAT_VEC3 0x8B51
+#define GL_FLOAT_VEC4 0x8B52
+#define GL_INT_VEC2 0x8B53
+#define GL_INT_VEC3 0x8B54
+#define GL_INT_VEC4 0x8B55
+#define GL_BOOL 0x8B56
+#define GL_BOOL_VEC2 0x8B57
+#define GL_BOOL_VEC3 0x8B58
+#define GL_BOOL_VEC4 0x8B59
+#define GL_FLOAT_MAT2 0x8B5A
+#define GL_FLOAT_MAT3 0x8B5B
+#define GL_FLOAT_MAT4 0x8B5C
+#define GL_SAMPLER_1D 0x8B5D
+#define GL_SAMPLER_2D 0x8B5E
+#define GL_SAMPLER_3D 0x8B5F
+#define GL_SAMPLER_CUBE 0x8B60
+#define GL_COMPILE_STATUS 0x8B81
+#define GL_LINK_STATUS 0x8B82
+#define GL_INFO_LOG_LENGTH 0x8B84
+#define GL_ACTIVE_UNIFORMS 0x8B86
+#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
+#define GL_ACTIVE_ATTRIBUTES 0x8B89
+#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
+#endif
+
+
+#if !defined(QT_OPENGL_ES_2)
 #define glProgramStringARB QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glProgramStringARB
 #define glBindProgramARB QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBindProgramARB
 #define glDeleteProgramsARB QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDeleteProgramsARB
@@ -426,63 +607,52 @@ struct QGLExtensionFuncs
 
 #define glMultiTexCoord4f QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glMultiTexCoord4f
 
-#if !defined(QT_OPENGL_ES_2)
 #define glActiveTexture QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glActiveTexture
-#endif
-
-#if !defined(QT_OPENGL_ES_2)
-
-#define glIsRenderbufferEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glIsRenderbufferEXT
-#define glBindRenderbufferEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBindRenderbufferEXT
-#define glDeleteRenderbuffersEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDeleteRenderbuffersEXT
-#define glGenRenderbuffersEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGenRenderbuffersEXT
-#define glRenderbufferStorageEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glRenderbufferStorageEXT
-#define glGetRenderbufferParameterivEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetRenderbufferParameterivEXT
-#define glIsFramebufferEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glIsFramebufferEXT
-#define glBindFramebufferEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBindFramebufferEXT
-#define glDeleteFramebuffersEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDeleteFramebuffersEXT
-#define glGenFramebuffersEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGenFramebuffersEXT
-#define glCheckFramebufferStatusEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glCheckFramebufferStatusEXT
-#define glFramebufferTexture1DEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glFramebufferTexture1DEXT
-#define glFramebufferTexture2DEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glFramebufferTexture2DEXT
-#define glFramebufferTexture3DEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glFramebufferTexture3DEXT
-#define glFramebufferRenderbufferEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glFramebufferRenderbufferEXT
-#define glGetFramebufferAttachmentParameterivEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetFramebufferAttachmentParameterivEXT
-#define glGenerateMipmapEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGenerateMipmapEXT
-
-#else // QT_OPENGL_ES_2
+#endif // !defined(QT_OPENGL_ES_2)
 
-#define glIsRenderbufferEXT glIsRenderbuffer
-#define glBindRenderbufferEXT glBindRenderbuffer
-#define glDeleteRenderbuffersEXT glDeleteRenderbuffers
-#define glGenRenderbuffersEXT glGenRenderbuffers
-#define glRenderbufferStorageEXT glRenderbufferStorage
-#define glGetRenderbufferParameterivEXT glGetRenderbufferParameteriv
-#define glIsFramebufferEXT glIsFramebuffer
-#define glBindFramebufferEXT glBindFramebuffer
-#define glDeleteFramebuffersEXT glDeleteFramebuffers
-#define glGenFramebuffersEXT glGenFramebuffers
-#define glCheckFramebufferStatusEXT glCheckFramebufferStatus
-#define glFramebufferTexture1DEXT glFramebufferTexture1D
-#define glFramebufferTexture2DEXT glFramebufferTexture2D
-#define glFramebufferTexture3DEXT glFramebufferTexture3D
-#define glFramebufferRenderbufferEXT glFramebufferRenderbuffer
-#define glGetFramebufferAttachmentParameterivEXT glGetFramebufferAttachmentParameteriv
-#define glGenerateMipmapEXT glGenerateMipmap
 
+// FBOs
+#if !defined(QT_OPENGL_ES_2)
+#define glIsRenderbuffer QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glIsRenderbuffer
+#define glBindRenderbuffer QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBindRenderbuffer
+#define glDeleteRenderbuffers QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDeleteRenderbuffers
+#define glGenRenderbuffers QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGenRenderbuffers
+#define glRenderbufferStorage QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glRenderbufferStorage
+#define glGetRenderbufferParameteriv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetRenderbufferParameteriv
+#define glIsFramebuffer QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glIsFramebuffer
+#define glBindFramebuffer QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBindFramebuffer
+#define glDeleteFramebuffers QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDeleteFramebuffers
+#define glGenFramebuffers QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGenFramebuffers
+#define glCheckFramebufferStatus QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glCheckFramebufferStatus
+#define glFramebufferTexture2D QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glFramebufferTexture2D
+#define glFramebufferRenderbuffer QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glFramebufferRenderbuffer
+#define glGetFramebufferAttachmentParameteriv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetFramebufferAttachmentParameteriv
+#define glGenerateMipmap QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGenerateMipmap
 #endif // QT_OPENGL_ES_2
+#define glBlitFramebufferEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBlitFramebufferEXT
+#define glRenderbufferStorageMultisampleEXT QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glRenderbufferStorageMultisampleEXT
+
 
-#define glBindBufferARB QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBindBufferARB
-#define glDeleteBuffersARB QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDeleteBuffersARB
-#define glGenBuffersARB QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGenBuffersARB
-#define glBufferDataARB QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBufferDataARB
+// Buffer objects
+#if !defined(QT_OPENGL_ES_2)
+#define glBindBuffer QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBindBuffer
+#define glDeleteBuffers QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDeleteBuffers
+#define glGenBuffers QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGenBuffers
+#define glBufferData QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBufferData
+#endif
 #define glMapBufferARB QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glMapBufferARB
 #define glUnmapBufferARB QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUnmapBufferARB
 
+
+// GLSL
+#if !defined(QT_OPENGL_ES_2)
+
 #define glCreateShader QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glCreateShader
 #define glShaderSource QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glShaderSource
+#define glShaderBinary QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glShaderBinary
 #define glCompileShader QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glCompileShader
 #define glDeleteShader QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDeleteShader
+#define glIsShader QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glIsShader
 
 #define glCreateProgram QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glCreateProgram
 #define glAttachShader QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glAttachShader
@@ -490,10 +660,13 @@ struct QGLExtensionFuncs
 #define glLinkProgram QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glLinkProgram
 #define glUseProgram QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUseProgram
 #define glDeleteProgram QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDeleteProgram
+#define glIsProgram QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glIsProgram
 
 #define glGetShaderInfoLog QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetShaderInfoLog
 #define glGetShaderiv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetShaderiv
+#define glGetShaderSource QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetShaderSource
 #define glGetProgramiv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetProgramiv
+#define glGetProgramInfoLog QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetProgramInfoLog
 
 #define glGetUniformLocation QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetUniformLocation
 #define glUniform4fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniform4fv
@@ -501,11 +674,48 @@ struct QGLExtensionFuncs
 #define glUniform2fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniform2fv
 #define glUniform1fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniform1fv
 #define glUniform1i QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniform1i
+#define glUniform1iv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniform1iv
+#define glUniformMatrix2fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniformMatrix2fv
+#define glUniformMatrix3fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniformMatrix3fv
+#define glUniformMatrix4fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniformMatrix4fv
+#define glUniformMatrix2x3fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniformMatrix2x3fv
+#define glUniformMatrix2x4fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniformMatrix2x4fv
+#define glUniformMatrix3x2fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniformMatrix3x2fv
+#define glUniformMatrix3x4fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniformMatrix3x4fv
+#define glUniformMatrix4x2fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniformMatrix4x2fv
+#define glUniformMatrix4x3fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glUniformMatrix4x3fv
+
+#define glBindAttribLocation QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glBindAttribLocation
+#define glGetAttribLocation QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetAttribLocation
+#define glVertexAttrib1fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glVertexAttrib1fv
+#define glVertexAttrib2fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glVertexAttrib2fv
+#define glVertexAttrib3fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glVertexAttrib3fv
+#define glVertexAttrib4fv QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glVertexAttrib4fv
+#define glVertexAttribPointer QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glVertexAttribPointer
+#define glDisableVertexAttribArray QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glDisableVertexAttribArray
+#define glEnableVertexAttribArray QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glEnableVertexAttribArray
+
+#else // QT_OPENGL_ES_2
+
+#define glGetProgramBinaryOES QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glGetProgramBinaryOES
+#define glProgramBinaryOES QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glProgramBinaryOES
+
+#endif // QT_OPENGL_ES_2
+
+
+#if !defined(QT_OPENGL_ES_2)
+#define glStencilOpSeparate QGLContextPrivate::qt_get_extension_funcs(ctx).qt_glStencilOpSeparate
+#endif
+
+#if defined(QT_OPENGL_ES_2)
+#define glClearDepth glClearDepthf
+#endif
 
 extern bool qt_resolve_framebufferobject_extensions(QGLContext *ctx);
 bool qt_resolve_buffer_extensions(QGLContext *ctx);
 
 bool qt_resolve_version_1_3_functions(QGLContext *ctx);
+bool qt_resolve_version_2_0_functions(QGLContext *ctx);
 bool qt_resolve_stencil_face_extension(QGLContext *ctx);
 bool qt_resolve_frag_program_extensions(QGLContext *ctx);
 
diff --git a/src/opengl/qglframebufferobject.cpp b/src/opengl/qglframebufferobject.cpp
index 6e908e2..159a00a 100644
--- a/src/opengl/qglframebufferobject.cpp
+++ b/src/opengl/qglframebufferobject.cpp
@@ -43,7 +43,14 @@
 
 #include <qdebug.h>
 #include <private/qgl_p.h>
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#include <private/qpaintengineex_opengl2_p.h>
+#endif
+
+#ifndef QT_OPENGL_ES_2
 #include <private/qpaintengine_opengl_p.h>
+#endif
+
 #include <qglframebufferobject.h>
 #include <qlibrary.h>
 #include <qimage.h>
@@ -67,29 +74,242 @@ extern QImage qt_gl_read_framebuffer(const QSize&, bool, bool);
     }                                                     \
 }
 
+class QGLFramebufferObjectFormatPrivate
+{
+public:
+    int samples;
+    QGLFramebufferObject::Attachment attachment;
+    GLenum target;
+    GLenum internal_format;
+};
+
+/*!
+    \class QGLFramebufferObjectFormat
+    \brief The QGLFramebufferObjectFormat class specifies the format of an OpenGL
+    framebuffer object.
+
+    \since 4.6
+
+    \ingroup multimedia
+
+    A framebuffer object has several characteristics:
+    \list
+    \i \link setSamples() Number of samples per pixels.\endlink
+    \i \link setAttachment() Depth and/or stencil attachments.\endlink
+    \i \link setTextureTarget() Texture target.\endlink
+    \i \link setInternalFormat() Internal format.\endlink
+    \endlist
+
+    Note that the desired attachments or number of samples per pixels might not
+    be supported by the hardware driver. Call QGLFramebufferObject::format()
+    after creating a QGLFramebufferObject to find the exact format that was
+    used to create the frame buffer object.
+
+    \sa QGLFramebufferObject
+*/
+
+/*!
+    \since 4.6
+
+    Creates a QGLFramebufferObjectFormat object with properties specifying
+    the format of an OpenGL framebuffer object.
+
+    A multisample framebuffer object is specified by setting \a samples
+    to a value different from zero. If the desired amount of samples per pixel is
+    not supported by the hardware then the maximum number of samples per pixel
+    will be used. Note that multisample framebuffer objects can not be bound as
+    textures. Also, the \c{GL_EXT_framebuffer_multisample} extension is required
+    to create a framebuffer with more than one sample per pixel.
+
+    For multisample framebuffer objects a color render buffer is created,
+    otherwise a texture with the texture target \a target is created.
+    The color render buffer or texture will have the internal format
+    \a internalFormat, and will be bound to the \c GL_COLOR_ATTACHMENT0
+    attachment in the framebuffer object.
+
+    The \a attachment parameter describes the depth/stencil buffer
+    configuration.
+
+    \sa samples(), attachment(), target(), internalFormat()
+*/
+
+QGLFramebufferObjectFormat::QGLFramebufferObjectFormat(int samples,
+                                                       QGLFramebufferObject::Attachment attachment,
+                                                       GLenum target,
+                                                       GLenum internalFormat)
+{
+    d = new QGLFramebufferObjectFormatPrivate;
+    d->samples = samples;
+    d->attachment = attachment;
+    d->target = target;
+    d->internal_format = internalFormat;
+}
+
+/*!
+    \since 4.6
+
+    Constructs a copy of \a other.
+*/
+
+QGLFramebufferObjectFormat::QGLFramebufferObjectFormat(const QGLFramebufferObjectFormat &other)
+{
+    d = new QGLFramebufferObjectFormatPrivate;
+    *d = *other.d;
+}
+
+/*!
+    \since 4.6
+
+    Assigns \a other to this object.
+*/
+
+QGLFramebufferObjectFormat &QGLFramebufferObjectFormat::operator=(const QGLFramebufferObjectFormat &other)
+{
+    *d = *other.d;
+    return *this;
+}
+
+/*!
+    \since 4.6
+
+    Destroys the QGLFramebufferObjectFormat.
+*/
+QGLFramebufferObjectFormat::~QGLFramebufferObjectFormat()
+{
+    delete d;
+}
+
+/*!
+    \since 4.6
+
+    Sets the number of samples per pixel for a multisample framebuffer object
+    to \a samples.
+    A sample count of 0 represents a regular non-multisample framebuffer object.
+
+    \sa samples()
+*/
+void QGLFramebufferObjectFormat::setSamples(int samples)
+{
+    d->samples = samples;
+}
+
+/*!
+    \since 4.6
+
+    Returns the number of samples per pixel if a framebuffer object
+    is a multisample framebuffer object. Otherwise, returns 0.
+
+    \sa setSamples()
+*/
+int QGLFramebufferObjectFormat::samples() const
+{
+    return d->samples;
+}
+
+/*!
+    \since 4.6
+
+    Sets the attachments a framebuffer object should have to \a attachment.
+
+    \sa attachment()
+*/
+void QGLFramebufferObjectFormat::setAttachment(QGLFramebufferObject::Attachment attachment)
+{
+    d->attachment = attachment;
+}
+
+/*!
+    \since 4.6
+
+    Returns the status of the depth and stencil buffers attached to
+    a framebuffer object.
+
+    \sa setAttachment()
+*/
+QGLFramebufferObject::Attachment QGLFramebufferObjectFormat::attachment() const
+{
+    return d->attachment;
+}
+
+/*!
+    \since 4.6
+
+    Sets the texture target of the texture attached to a framebuffer object to
+    \a target. Ignored for multisample framebuffer objects.
+
+    \sa textureTarget(), samples()
+*/
+void QGLFramebufferObjectFormat::setTextureTarget(GLenum target)
+{
+    d->target = target;
+}
+
+/*!
+    \since 4.6
+
+    Returns the texture target of the texture attached to a framebuffer object.
+    Ignored for multisample framebuffer objects.
+
+    \sa setTextureTarget(), samples()
+*/
+GLenum QGLFramebufferObjectFormat::textureTarget() const
+{
+    return d->target;
+}
+
+/*!
+    \since 4.6
+
+    Sets the internal format of a framebuffer object's texture or multisample
+    framebuffer object's color buffer to \a internalFormat.
+
+    \sa internalFormat()
+*/
+void QGLFramebufferObjectFormat::setInternalFormat(GLenum internalFormat)
+{
+    d->internal_format = internalFormat;
+}
+
+/*!
+    \since 4.6
+
+    Returns the internal format of a framebuffer object's texture or
+    multisample framebuffer object's color buffer.
+
+    \sa setInternalFormat()
+*/
+GLenum QGLFramebufferObjectFormat::internalFormat() const
+{
+    return d->internal_format;
+}
+
 class QGLFramebufferObjectPrivate
 {
 public:
-    QGLFramebufferObjectPrivate() : depth_stencil_buffer(0), valid(false), bound(false), ctx(0) {}
+    QGLFramebufferObjectPrivate() : depth_stencil_buffer(0), valid(false), bound(false), ctx(0), previous_fbo(0) {}
     ~QGLFramebufferObjectPrivate() {}
 
     void init(const QSize& sz, QGLFramebufferObject::Attachment attachment,
-              GLenum internal_format, GLenum texture_target);
+              GLenum internal_format, GLenum texture_target, GLint samples = 0);
     bool checkFramebufferStatus() const;
     GLuint texture;
     GLuint fbo;
     GLuint depth_stencil_buffer;
+    GLuint color_buffer;
     GLenum target;
     QSize size;
+    QGLFramebufferObjectFormat format;
+    int samples;
     uint valid : 1;
     uint bound : 1;
     QGLFramebufferObject::Attachment fbo_attachment;
     QGLContext *ctx; // for Windows extension ptrs
+    GLuint previous_fbo;
 };
 
 bool QGLFramebufferObjectPrivate::checkFramebufferStatus() const
 {
-    GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
+    GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER_EXT);
     switch(status) {
     case GL_NO_ERROR:
     case GL_FRAMEBUFFER_COMPLETE_EXT:
@@ -121,6 +341,9 @@ bool QGLFramebufferObjectPrivate::checkFramebufferStatus() const
     case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT:
         qDebug("QGLFramebufferObject: Framebuffer incomplete, missing read buffer.");
         break;
+    case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT:
+        qDebug("QGLFramebufferObject: Framebuffer incomplete, attachments must have same number of samples per pixel.");
+        break;
     default:
         qDebug() <<"QGLFramebufferObject: An undefined error has occurred: "<< status;
         break;
@@ -129,7 +352,7 @@ bool QGLFramebufferObjectPrivate::checkFramebufferStatus() const
 }
 
 void QGLFramebufferObjectPrivate::init(const QSize &sz, QGLFramebufferObject::Attachment attachment,
-                                       GLenum texture_target, GLenum internal_format)
+                                       GLenum texture_target, GLenum internal_format, GLint samples)
 {
     ctx = const_cast<QGLContext *>(QGLContext::currentContext());
     bool ext_detected = (QGLExtensions::glExtensions & QGLExtensions::FramebufferObject);
@@ -141,81 +364,137 @@ void QGLFramebufferObjectPrivate::init(const QSize &sz, QGLFramebufferObject::At
     // texture dimensions
 
     while (glGetError() != GL_NO_ERROR) {} // reset error state
-    glGenFramebuffersEXT(1, &fbo);
-    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
+    glGenFramebuffers(1, &fbo);
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo);
 
     QT_CHECK_GLERROR();
     // init texture
-    glGenTextures(1, &texture);
-    glBindTexture(target, texture);
-    glTexImage2D(target, 0, internal_format, size.width(), size.height(), 0,
-                 GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+    if (samples == 0) {
+        glGenTextures(1, &texture);
+        glBindTexture(target, texture);
+        glTexImage2D(target, 0, internal_format, size.width(), size.height(), 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 #ifndef QT_OPENGL_ES
-    glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+        glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 #else
-    glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameterf(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameterf(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+        glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterf(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        glTexParameterf(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 #endif
-    glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
-                              target, texture, 0);
+        glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                target, texture, 0);
 
-    QT_CHECK_GLERROR();
-    valid = checkFramebufferStatus();
+        QT_CHECK_GLERROR();
+        valid = checkFramebufferStatus();
+
+        color_buffer = 0;
+        samples = 0;
+    } else {
+        GLint maxSamples;
+        glGetIntegerv(GL_MAX_SAMPLES_EXT, &maxSamples);
+
+        samples = qBound(1, int(samples), int(maxSamples));
+
+        glGenRenderbuffers(1, &color_buffer);
+        glBindRenderbuffer(GL_RENDERBUFFER_EXT, color_buffer);
+        if (glRenderbufferStorageMultisampleEXT) {
+            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                internal_format, size.width(), size.height());
+        } else {
+            samples = 0;
+            glRenderbufferStorage(GL_RENDERBUFFER_EXT, internal_format,
+                size.width(), size.height());
+        }
+
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                                     GL_RENDERBUFFER_EXT, color_buffer);
+
+        QT_CHECK_GLERROR();
+        valid = checkFramebufferStatus();
+
+        if (valid)
+            glGetRenderbufferParameteriv(GL_RENDERBUFFER_EXT, GL_RENDERBUFFER_SAMPLES_EXT, &samples);
+    }
 
     if (attachment == QGLFramebufferObject::CombinedDepthStencil
         && (QGLExtensions::glExtensions & QGLExtensions::PackedDepthStencil)) {
         // depth and stencil buffer needs another extension
-        glGenRenderbuffersEXT(1, &depth_stencil_buffer);
-        Q_ASSERT(!glIsRenderbufferEXT(depth_stencil_buffer));
-        glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depth_stencil_buffer);
-        Q_ASSERT(glIsRenderbufferEXT(depth_stencil_buffer));
-        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH24_STENCIL8_EXT, size.width(), size.height());
+        glGenRenderbuffers(1, &depth_stencil_buffer);
+        Q_ASSERT(!glIsRenderbuffer(depth_stencil_buffer));
+        glBindRenderbuffer(GL_RENDERBUFFER_EXT, depth_stencil_buffer);
+        Q_ASSERT(glIsRenderbuffer(depth_stencil_buffer));
+        if (samples != 0 && glRenderbufferStorageMultisampleEXT)
+            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                GL_DEPTH24_STENCIL8_EXT, size.width(), size.height());
+        else
+            glRenderbufferStorage(GL_RENDERBUFFER_EXT,
+                GL_DEPTH24_STENCIL8_EXT, size.width(), size.height());
+
         GLint i = 0;
-        glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT, GL_RENDERBUFFER_DEPTH_SIZE_EXT, &i);
-        glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
+        glGetRenderbufferParameteriv(GL_RENDERBUFFER_EXT, GL_RENDERBUFFER_DEPTH_SIZE_EXT, &i);
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
                                      GL_RENDERBUFFER_EXT, depth_stencil_buffer);
-        glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT,
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT,
                                      GL_RENDERBUFFER_EXT, depth_stencil_buffer);
         fbo_attachment = QGLFramebufferObject::CombinedDepthStencil;
+
         valid = checkFramebufferStatus();
         if (!valid)
-            glDeleteRenderbuffersEXT(1, &depth_stencil_buffer);
+            glDeleteRenderbuffers(1, &depth_stencil_buffer);
     } else if (attachment == QGLFramebufferObject::Depth
                || attachment == QGLFramebufferObject::CombinedDepthStencil)
     {
-        glGenRenderbuffersEXT(1, &depth_stencil_buffer);
-        Q_ASSERT(!glIsRenderbufferEXT(depth_stencil_buffer));
-        glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depth_stencil_buffer);
-        Q_ASSERT(glIsRenderbufferEXT(depth_stencil_buffer));
+        glGenRenderbuffers(1, &depth_stencil_buffer);
+        Q_ASSERT(!glIsRenderbuffer(depth_stencil_buffer));
+        glBindRenderbuffer(GL_RENDERBUFFER_EXT, depth_stencil_buffer);
+        Q_ASSERT(glIsRenderbuffer(depth_stencil_buffer));
+        if (samples != 0 && glRenderbufferStorageMultisampleEXT) {
+#ifdef QT_OPENGL_ES
+#define GL_DEPTH_COMPONENT16 0x81A5
+            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                GL_DEPTH_COMPONENT16, size.width(), size.height());
+#else
+            glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, samples,
+                GL_DEPTH_COMPONENT, size.width(), size.height());
+#endif
+        } else {
 #ifdef QT_OPENGL_ES
 #define GL_DEPTH_COMPONENT16 0x81A5
-        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT16, size.width(), size.height());
+            glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT16, size.width(), size.height());
 #else
-        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, size.width(), size.height());
+            glRenderbufferStorage(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, size.width(), size.height());
 #endif
+        }
         GLint i = 0;
-        glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT, GL_RENDERBUFFER_DEPTH_SIZE_EXT, &i);
-        glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
+        glGetRenderbufferParameteriv(GL_RENDERBUFFER_EXT, GL_RENDERBUFFER_DEPTH_SIZE_EXT, &i);
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
                                      GL_RENDERBUFFER_EXT, depth_stencil_buffer);
         fbo_attachment = QGLFramebufferObject::Depth;
         valid = checkFramebufferStatus();
         if (!valid)
-            glDeleteRenderbuffersEXT(1, &depth_stencil_buffer);
+            glDeleteRenderbuffers(1, &depth_stencil_buffer);
     } else {
         fbo_attachment = QGLFramebufferObject::NoAttachment;
     }
 
-    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
     if (!valid) {
-        glDeleteTextures(1, &texture);
-        glDeleteFramebuffersEXT(1, &fbo);
+        if (color_buffer)
+            glDeleteRenderbuffers(1, &color_buffer);
+        else
+            glDeleteTextures(1, &texture);
+        glDeleteFramebuffers(1, &fbo);
     }
     QT_CHECK_GLERROR();
+
+    format.setTextureTarget(target);
+    format.setSamples(int(samples));
+    format.setAttachment(fbo_attachment);
+    format.setInternalFormat(internal_format);
 }
 
 /*!
@@ -263,13 +542,18 @@ void QGLFramebufferObjectPrivate::init(const QSize &sz, QGLFramebufferObject::At
     framebuffer objects more portable.
     \endlist
 
-    Note that primitives drawn to a QGLFramebufferObject with QPainter
-    will only be antialiased if the QPainter::HighQualityAntialiasing
-    render hint is set. This is because there is currently no support
-    for the \c{GL_EXT_framebuffer_multisample} extension, which is
-    required to do multisample based antialiasing. Also note that the
-    QPainter::HighQualityAntialiasing render hint requires the
-    \c{GL_ARB_fragment_program} extension to work in OpenGL.
+    Note that you need to create a QGLFramebufferObject with more than one
+    sample per pixel for primitives to be antialiased when drawing using a
+    QPainter, unless if the QPainter::HighQualityAntialiasing render hint is
+    set. The QPainter::HighQualityAntialiasing render hint will enable
+    antialiasing as long as the \c{GL_ARB_fragment_program} extension is
+    present. To create a multisample framebuffer object you should use one of
+    the constructors that take a QGLFramebufferObject parameter, and set the
+    QGLFramebufferObject::samples() property to a non-zero value.
+
+    If you want to use a framebuffer object with multisampling enabled
+    as a texture, you first need to copy from it to a regular framebuffer
+    object using QGLContext::blitFramebuffer().
 
     \sa {Framebuffer Object Example}
 */
@@ -357,6 +641,32 @@ QGLFramebufferObject::QGLFramebufferObject(int width, int height, GLenum target)
     d->init(QSize(width, height), NoAttachment, target, DEFAULT_FORMAT);
 }
 
+/*! \overload
+
+    Constructs an OpenGL framebuffer object of the given \a size based on the
+    supplied \a format.
+*/
+
+QGLFramebufferObject::QGLFramebufferObject(const QSize &size, const QGLFramebufferObjectFormat &format)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(size, format.attachment(), format.textureTarget(), format.internalFormat(), format.samples());
+}
+
+/*! \overload
+
+    Constructs an OpenGL framebuffer object of the given \a width and \a height
+    based on the supplied \a format.
+*/
+
+QGLFramebufferObject::QGLFramebufferObject(int width, int height, const QGLFramebufferObjectFormat &format)
+    : d_ptr(new QGLFramebufferObjectPrivate)
+{
+    Q_D(QGLFramebufferObject);
+    d->init(QSize(width, height), format.attachment(), format.textureTarget(), format.internalFormat(), format.samples());
+}
+
 #ifdef Q_MAC_COMPAT_GL_FUNCTIONS
 /*! \internal */
 QGLFramebufferObject::QGLFramebufferObject(int width, int height, QMacCompatGLenum target)
@@ -444,9 +754,11 @@ QGLFramebufferObject::~QGLFramebufferObject()
             || qgl_share_reg()->checkSharing(d->ctx, QGLContext::currentContext())))
     {
         glDeleteTextures(1, &d->texture);
+        if (d->color_buffer)
+            glDeleteRenderbuffers(1, &d->color_buffer);
         if (d->depth_stencil_buffer)
-            glDeleteRenderbuffersEXT(1, &d->depth_stencil_buffer);
-        glDeleteFramebuffersEXT(1, &d->fbo);
+            glDeleteRenderbuffers(1, &d->depth_stencil_buffer);
+        glDeleteFramebuffers(1, &d->fbo);
     }
 }
 
@@ -472,6 +784,15 @@ bool QGLFramebufferObject::isValid() const
     Switches rendering from the default, windowing system provided
     framebuffer to this framebuffer object.
     Returns true upon success, false otherwise.
+
+    Since 4.6: if another QGLFramebufferObject instance was already bound
+    to the current context, then its handle() will be remembered and
+    automatically restored when release() is called.  This allows multiple
+    framebuffer rendering targets to be stacked up.  It is important that
+    release() is called on the stacked framebuffer objects in the reverse
+    order of the calls to bind().
+
+    \sa release()
 */
 bool QGLFramebufferObject::bind()
 {
@@ -479,8 +800,16 @@ bool QGLFramebufferObject::bind()
 	return false;
     Q_D(QGLFramebufferObject);
     QGL_FUNC_CONTEXT;
-    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, d->fbo);
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, d->fbo);
     d->bound = d->valid = d->checkFramebufferStatus();
+    const QGLContext *context = QGLContext::currentContext();
+    if (d->valid && context) {
+        // Save the previous setting to automatically restore in release().
+        if (context->d_ptr->current_fbo != d->fbo) {
+            d->previous_fbo = context->d_ptr->current_fbo;
+            context->d_ptr->current_fbo = d->fbo;
+        }
+    }
     return d->valid;
 }
 
@@ -490,6 +819,12 @@ bool QGLFramebufferObject::bind()
     Switches rendering back to the default, windowing system provided
     framebuffer.
     Returns true upon success, false otherwise.
+
+    Since 4.6: if another QGLFramebufferObject instance was already bound
+    to the current context when bind() was called, then this function will
+    automatically re-bind it to the current context.
+
+    \sa bind()
 */
 bool QGLFramebufferObject::release()
 {
@@ -497,10 +832,19 @@ bool QGLFramebufferObject::release()
 	return false;
     Q_D(QGLFramebufferObject);
     QGL_FUNC_CONTEXT;
-    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-    d->valid = d->checkFramebufferStatus();
     d->bound = false;
-    return d->valid;
+
+    const QGLContext *context = QGLContext::currentContext();
+    if (context) {
+        // Restore the previous setting for stacked framebuffer objects.
+        if (d->previous_fbo != context->d_ptr->current_fbo) {
+            context->d_ptr->current_fbo = d->previous_fbo;
+            glBindFramebuffer(GL_FRAMEBUFFER_EXT, d->previous_fbo);
+        }
+        d->previous_fbo = 0;
+    }
+
+    return true;
 }
 
 /*!
@@ -509,6 +853,9 @@ bool QGLFramebufferObject::release()
     Returns the texture id for the texture attached as the default
     rendering target in this framebuffer object. This texture id can
     be bound as a normal texture in your own GL code.
+
+    If a multisample framebuffer object is used then the value returned
+    from this function will be invalid.
 */
 GLuint QGLFramebufferObject::texture() const
 {
@@ -529,6 +876,15 @@ QSize QGLFramebufferObject::size() const
 }
 
 /*!
+    Returns the format of this framebuffer object.
+*/
+const QGLFramebufferObjectFormat &QGLFramebufferObject::format() const
+{
+    Q_D(const QGLFramebufferObject);
+    return d->format;
+}
+
+/*!
     \fn QImage QGLFramebufferObject::toImage() const
 
     Returns the contents of this framebuffer object as a QImage.
@@ -546,17 +902,27 @@ QImage QGLFramebufferObject::toImage() const
     return image;
 }
 
-#if !defined(QT_OPENGL_ES_2)
-Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_buffer_paintengine)
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_buffer_2_engine)
+#endif
+
+#ifndef QT_OPENGL_ES_2
+Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_buffer_engine)
 #endif
 
 /*! \reimp */
 QPaintEngine *QGLFramebufferObject::paintEngine() const
 {
-#if !defined(QT_OPENGL_ES_2)
-    return qt_buffer_paintengine();
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL)
+    return qt_buffer_engine();
+#elif defined(QT_OPENGL_ES_2)
+    return qt_buffer_2_engine();
 #else
-    return 0;
+    Q_D(const QGLFramebufferObject);
+    if (d->ctx->d_func()->internal_context || qt_gl_preferGL2Engine())
+        return qt_buffer_2_engine();
+    else
+        return qt_buffer_engine();
 #endif
 }
 
@@ -568,7 +934,8 @@ QPaintEngine *QGLFramebufferObject::paintEngine() const
 */
 bool QGLFramebufferObject::hasOpenGLFramebufferObjects()
 {
-    QGLWidget dmy; // needed to detect and init the QGLExtensions object
+    if (!QGLContext::currentContext())
+        QGLWidget dmy; // needed to detect and init the QGLExtensions object
     return (QGLExtensions::glExtensions & QGLExtensions::FramebufferObject);
 }
 
@@ -623,15 +990,16 @@ void QGLFramebufferObject::drawTexture(const QPointF &point, QMacCompatGLuint te
 }
 #endif
 
-extern int qt_defaultDpi();
+extern int qt_defaultDpiX();
+extern int qt_defaultDpiY();
 
 /*! \reimp */
 int QGLFramebufferObject::metric(PaintDeviceMetric metric) const
 {
     Q_D(const QGLFramebufferObject);
 
-    float dpmx = qt_defaultDpi()*100./2.54;
-    float dpmy = qt_defaultDpi()*100./2.54;
+    float dpmx = qt_defaultDpiX()*100./2.54;
+    float dpmy = qt_defaultDpiY()*100./2.54;
     int w = d->size.width();
     int h = d->size.height();
     switch (metric) {
@@ -654,16 +1022,16 @@ int QGLFramebufferObject::metric(PaintDeviceMetric metric) const
         return 32;//d->depth;
 
     case PdmDpiX:
-        return (int)(dpmx * 0.0254);
+        return qRound(dpmx * 0.0254);
 
     case PdmDpiY:
-        return (int)(dpmy * 0.0254);
+        return qRound(dpmy * 0.0254);
 
     case PdmPhysicalDpiX:
-        return (int)(dpmx * 0.0254);
+        return qRound(dpmx * 0.0254);
 
     case PdmPhysicalDpiY:
-        return (int)(dpmy * 0.0254);
+        return qRound(dpmy * 0.0254);
 
     default:
         qWarning("QGLFramebufferObject::metric(), Unhandled metric type: %d.\n", metric);
@@ -719,4 +1087,85 @@ bool QGLFramebufferObject::isBound() const
     return d->bound;
 }
 
+/*!
+    \fn bool QGLFramebufferObject::hasOpenGLFramebufferBlit()
+
+    \since 4.6
+
+    Returns true if the OpenGL \c{GL_EXT_framebuffer_blit} extension
+    is present on this system; otherwise returns false.
+*/
+bool QGLFramebufferObject::hasOpenGLFramebufferBlit()
+{
+    if (!QGLContext::currentContext())
+        QGLWidget dmy; // needed to detect and init the QGLExtensions object
+    return (QGLExtensions::glExtensions & QGLExtensions::FramebufferBlit);
+}
+
+/*!
+    \since 4.6
+
+    Blits from the \a sourceRect rectangle in the \a source framebuffer
+    object to the \a targetRect rectangle in the \a target framebuffer object.
+
+    If \a source or \a target is 0, the default framebuffer will be used
+    instead of a framebuffer object as source or target respectively.
+
+    The \a buffers parameter should be a mask consisting of any combination of
+    COLOR_BUFFER_BIT, DEPTH_BUFFER_BIT, and STENCIL_BUFFER_BIT. Any buffer type
+    that is not present both in the source and target buffers is ignored.
+
+    The \a sourceRect and \a targetRect rectangles may have different sizes;
+    in this case \a buffers should not contain DEPTH_BUFFER_BIT or
+    STENCIL_BUFFER_BIT. The \a filter parameter should be set to GL_LINEAR or
+    GL_NEAREST, and specifies whether linear or nearest interpolation should
+    be used when scaling is performed.
+
+    If \a source equals \a target a copy is performed within the same buffer.
+    Results are undefined if the source and target rectangles overlap and
+    have different sizes. The sizes must also be the same if any of the
+    framebuffer objects are multisample framebuffers.
+
+    Note that the scissor test will restrict the blit area if enabled.
+
+    This function will have no effect unless hasOpenGLFramebufferBlit() returns
+    true.
+*/
+void QGLFramebufferObject::blitFramebuffer(QGLFramebufferObject *target, const QRect &targetRect,
+                                           QGLFramebufferObject *source, const QRect &sourceRect,
+                                           GLbitfield buffers,
+                                           GLenum filter)
+{
+    if (!(QGLExtensions::glExtensions & QGLExtensions::FramebufferBlit))
+        return;
+
+    const QGLContext *ctx = QGLContext::currentContext();
+    if (!ctx)
+        return;
+
+    const int height = ctx->device()->height();
+
+    const int sh = source ? source->height() : height;
+    const int th = target ? target->height() : height;
+
+    const int sx0 = sourceRect.left();
+    const int sx1 = sourceRect.left() + sourceRect.width();
+    const int sy0 = sh - (sourceRect.top() + sourceRect.height());
+    const int sy1 = sh - sourceRect.top();
+
+    const int tx0 = targetRect.left();
+    const int tx1 = targetRect.left() + targetRect.width();
+    const int ty0 = th - (targetRect.top() + targetRect.height());
+    const int ty1 = th - targetRect.top();
+
+    glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, source ? source->handle() : 0);
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, target ? target->handle() : 0);
+
+    glBlitFramebufferEXT(sx0, sy0, sx1, sy1,
+                         tx0, ty0, tx1, ty1,
+                         buffers, filter);
+
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+}
+
 QT_END_NAMESPACE
diff --git a/src/opengl/qglframebufferobject.h b/src/opengl/qglframebufferobject.h
index fea8920..935f4ee 100644
--- a/src/opengl/qglframebufferobject.h
+++ b/src/opengl/qglframebufferobject.h
@@ -52,6 +52,7 @@ QT_BEGIN_NAMESPACE
 QT_MODULE(OpenGL)
 
 class QGLFramebufferObjectPrivate;
+class QGLFramebufferObjectFormat;
 
 class Q_OPENGL_EXPORT QGLFramebufferObject : public QPaintDevice
 {
@@ -77,6 +78,9 @@ public:
                          GLenum target = GL_TEXTURE_2D, GLenum internal_format = GL_RGBA);
 #endif
 
+    QGLFramebufferObject(const QSize &size, const QGLFramebufferObjectFormat &format);
+    QGLFramebufferObject(int width, int height, const QGLFramebufferObjectFormat &format);
+
 #ifdef Q_MAC_COMPAT_GL_FUNCTIONS
     QGLFramebufferObject(const QSize &size, QMacCompatGLenum target = GL_TEXTURE_2D);
     QGLFramebufferObject(int width, int height, QMacCompatGLenum target = GL_TEXTURE_2D);
@@ -89,10 +93,13 @@ public:
 
     virtual ~QGLFramebufferObject();
 
+    const QGLFramebufferObjectFormat &format() const;
+
     bool isValid() const;
     bool isBound() const;
     bool bind();
     bool release();
+
     GLuint texture() const;
     QSize size() const;
     QImage toImage() const;
@@ -110,6 +117,12 @@ public:
     void drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
 #endif
 
+    static bool hasOpenGLFramebufferBlit();
+    static void blitFramebuffer(QGLFramebufferObject *target, const QRect &targetRect,
+                                QGLFramebufferObject *source, const QRect &sourceRect,
+                                GLbitfield buffers = GL_COLOR_BUFFER_BIT,
+                                GLenum filter = GL_NEAREST);
+
 protected:
     int metric(PaintDeviceMetric metric) const;
     int devType() const { return QInternal::FramebufferObject; }
@@ -120,6 +133,42 @@ private:
     friend class QGLDrawable;
 };
 
+class QGLFramebufferObjectFormatPrivate;
+class Q_OPENGL_EXPORT QGLFramebufferObjectFormat
+{
+public:
+#if !defined(QT_OPENGL_ES) || defined(Q_QDOC)
+    QGLFramebufferObjectFormat(int samples = 0,
+                               QGLFramebufferObject::Attachment attachment = QGLFramebufferObject::NoAttachment,
+                               GLenum target = GL_TEXTURE_2D,
+                               GLenum internalFormat = GL_RGBA8);
+#else
+    QGLFramebufferObjectFormat(int samples = 0,
+                               QGLFramebufferObject::Attachment attachment = QGLFramebufferObject::NoAttachment,
+                               GLenum target = GL_TEXTURE_2D,
+                               GLenum internalFormat = GL_RGBA);
+#endif
+
+    QGLFramebufferObjectFormat(const QGLFramebufferObjectFormat &other);
+    QGLFramebufferObjectFormat &operator=(const QGLFramebufferObjectFormat &other);
+    ~QGLFramebufferObjectFormat();
+
+    void setSamples(int samples);
+    int samples() const;
+
+    void setAttachment(QGLFramebufferObject::Attachment attachment);
+    QGLFramebufferObject::Attachment attachment() const;
+
+    void setTextureTarget(GLenum target);
+    GLenum textureTarget() const;
+
+    void setInternalFormat(GLenum internalFormat);
+    GLenum internalFormat() const;
+
+private:
+    QGLFramebufferObjectFormatPrivate *d;
+};
+
 QT_END_NAMESPACE
 
 QT_END_HEADER
diff --git a/src/opengl/qglpixelbuffer.cpp b/src/opengl/qglpixelbuffer.cpp
index 8ff2e1d..dbd76a2 100644
--- a/src/opengl/qglpixelbuffer.cpp
+++ b/src/opengl/qglpixelbuffer.cpp
@@ -76,12 +76,17 @@
     \sa {opengl/pbuffers}{Pbuffers Example}
 */
 
+#include <QtCore/qglobal.h>
+
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#include <private/qpaintengineex_opengl2_p.h>
+#endif
 
 #include <qglpixelbuffer.h>
 #include <private/qglpixelbuffer_p.h>
 #include <qimage.h>
 
-#if !defined(QT_OPENGL_ES_2)
+#ifndef QT_OPENGL_ES_2
 #include <private/qpaintengine_opengl_p.h>
 #endif
 
@@ -362,29 +367,39 @@ bool QGLPixelBuffer::isValid() const
     return !d->invalid;
 }
 
-#if !defined(QT_OPENGL_ES_2)
-Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_buffer_paintengine)
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_buffer_2_engine)
+#endif
+
+#ifndef QT_OPENGL_ES_2
+Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_buffer_engine)
 #endif
 
 /*! \reimp */
 QPaintEngine *QGLPixelBuffer::paintEngine() const
 {
-#if !defined(QT_OPENGL_ES_2)
-    return qt_buffer_paintengine();
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL)
+    return qt_buffer_engine();
+#elif defined(QT_OPENGL_ES_2)
+    return qt_buffer_2_engine();
 #else
-    return 0;
+    if (d_ptr->qctx->d_func()->internal_context || qt_gl_preferGL2Engine())
+        return qt_buffer_2_engine();
+    else
+        return qt_buffer_engine();
 #endif
 }
 
-extern int qt_defaultDpi();
+extern int qt_defaultDpiX();
+extern int qt_defaultDpiY();
 
 /*! \reimp */
 int QGLPixelBuffer::metric(PaintDeviceMetric metric) const
 {
     Q_D(const QGLPixelBuffer);
 
-    float dpmx = qt_defaultDpi()*100./2.54;
-    float dpmy = qt_defaultDpi()*100./2.54;
+    float dpmx = qt_defaultDpiX()*100./2.54;
+    float dpmy = qt_defaultDpiY()*100./2.54;
     int w = d->req_size.width();
     int h = d->req_size.height();
     switch (metric) {
@@ -407,16 +422,16 @@ int QGLPixelBuffer::metric(PaintDeviceMetric metric) const
         return 32;//d->depth;
 
     case PdmDpiX:
-        return (int)(dpmx * 0.0254);
+        return qRound(dpmx * 0.0254);
 
     case PdmDpiY:
-        return (int)(dpmy * 0.0254);
+        return qRound(dpmy * 0.0254);
 
     case PdmPhysicalDpiX:
-        return (int)(dpmx * 0.0254);
+        return qRound(dpmx * 0.0254);
 
     case PdmPhysicalDpiY:
-        return (int)(dpmy * 0.0254);
+        return qRound(dpmy * 0.0254);
 
     default:
         qWarning("QGLPixelBuffer::metric(), Unhandled metric type: %d\n", metric);
diff --git a/src/opengl/qglpixmapfilter.cpp b/src/opengl/qglpixmapfilter.cpp
index ff23948..275bbed 100644
--- a/src/opengl/qglpixmapfilter.cpp
+++ b/src/opengl/qglpixmapfilter.cpp
@@ -45,27 +45,12 @@
 #include "qpaintengine_opengl_p.h"
 
 #include "qglpixelbuffer.h"
-#include "qglextensions_p.h"
+#include "qglshaderprogram.h"
 #include "qgl_p.h"
 
 #include "private/qapplication_p.h"
 
 
-#ifndef GL_FRAGMENT_SHADER
-#define GL_FRAGMENT_SHADER 0x8B30
-#endif
-
-#ifndef GL_COMPILE_STATUS
-#define GL_COMPILE_STATUS 0x8B81
-#endif
-
-#ifndef GL_LINK_STATUS
-#define GL_LINK_STATUS 0x8B82
-#endif
-
-
-
-
 QT_BEGIN_NAMESPACE
 
 
@@ -79,117 +64,6 @@ void QGLPixmapFilterBase::drawImpl(QPainter *painter, const QPointF &pos, const
     processGL(painter, pos, src, source);
 }
 
-QGLSLProgram::QGLSLProgram(const QString &src)
-    : ctx(QGLContext::currentContext())
-{
-    if (!qt_resolve_glsl_extensions(const_cast<QGLContext *>(ctx))) {
-        qWarning("Failed to resolve GLSL functions");
-        m_valid = false;
-        return;
-    }
-
-    m_shader = glCreateShader(GL_FRAGMENT_SHADER);
-
-    const QByteArray src_ba = src.toAscii();
-    const char *src_cstr = src_ba.constData();
-
-    glShaderSource(m_shader, 1, &src_cstr, 0);
-    glCompileShader(m_shader);
-    glGetShaderiv(m_shader, GL_COMPILE_STATUS, &m_valid);
-    if (!m_valid) {
-        char data[4096];
-        GLsizei len;
-        glGetShaderInfoLog(m_shader, 4096, &len, data);
-        qWarning("Failed to compile GLSL shader:\n%s\nCODE:\n%s\n", data, src_cstr);
-        return;
-    }
-
-    m_program = glCreateProgram();
-    glAttachShader(m_program, m_shader);
-    glLinkProgram(m_program);
-    glGetProgramiv(m_program, GL_LINK_STATUS, &m_valid);
-    if (!m_valid) {
-        char data[4096];
-        GLsizei len;
-        glGetShaderInfoLog(m_shader, 4096, &len, data);
-        qWarning("Failed to link GLSL program:\n%s\nCODE:\n%s\n", data, src_cstr);
-        return;
-    }
-}
-
-QGLSLProgram::~QGLSLProgram()
-{
-    glDeleteProgram(m_program);
-    glDeleteShader(m_shader);
-}
-
-bool QGLSLProgram::success() const
-{
-    return m_valid;
-}
-
-void QGLSLProgram::enable()
-{
-    glUseProgram(m_program);
-}
-
-void QGLSLProgram::disable()
-{
-    glUseProgram(0);
-}
-
-typedef GLuint (APIENTRY *_glGetUniformLocation) (GLuint, const char*);
-typedef void (APIENTRY *_glUniform4fv) (GLint, GLsizei, GLfloat *);
-typedef void (APIENTRY *_glUniform3fv) (GLint, GLsizei, GLfloat *);
-typedef void (APIENTRY *_glUniform2fv) (GLint, GLsizei, GLfloat *);
-typedef void (APIENTRY *_glUniform1fv) (GLint, GLsizei, GLfloat *);
-typedef void (APIENTRY *_glUniform1i) (GLint, GLint);
-
-int QGLSLProgram::getUniformLocation(const QString &name)
-{
-    return glGetUniformLocation(m_program, name.toAscii().constData());
-}
-
-void QGLSLProgram::setUniform(int uniform, int value)
-{
-    enable();
-    glUniform1i(uniform, value);
-}
-
-void QGLSLProgram::setUniform(int uniform, qreal value)
-{
-    enable();
-    GLfloat v[] = { value };
-    glUniform1fv(uniform, 1, v);
-}
-
-void QGLSLProgram::setUniform(int uniform, qreal v1, qreal v2)
-{
-    enable();
-    GLfloat v[] = { v1, v2 };
-    glUniform2fv(uniform, 1, v);
-}
-
-void QGLSLProgram::setUniform(int uniform, qreal v1, qreal v2, qreal v3)
-{
-    enable();
-    GLfloat v[] = { v1, v2, v3 };
-    glUniform3fv(uniform, 1, v);
-}
-
-void QGLSLProgram::setUniform(int uniform, qreal v1, qreal v2, qreal v3, qreal v4)
-{
-    enable();
-    GLfloat v[] = { v1, v2, v3, v4 };
-    glUniform4fv(uniform, 1, v);
-}
-
-void QGLSLProgram::setUniform(int uniform, int count, float *v)
-{
-    enable();
-    glUniform1fv(uniform, count, v);
-}
-
 class QGLPixmapColorizeFilter: public QGLPixmapFilter<QPixmapColorizeFilter>
 {
 public:
@@ -199,8 +73,8 @@ protected:
     bool processGL(QPainter *painter, const QPointF &pos, const QPixmap &pixmap, const QRectF &srcRect) const;
 
 private:
-    mutable QGLSLProgram m_program;
-    uint m_colorUniform;
+    mutable QGLShaderProgram m_program;
+    int m_colorUniform;
 };
 
 class QGLPixmapConvolutionFilter: public QGLPixmapFilter<QPixmapConvolutionFilter>
@@ -213,11 +87,11 @@ protected:
     bool processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect) const;
 
 private:
-    QString generateConvolutionShader() const;
+    QByteArray generateConvolutionShader() const;
 
-    mutable QGLSLProgram *m_program;
-    mutable uint m_scaleUniform;
-    mutable uint m_matrixUniform;
+    mutable QGLShaderProgram *m_program;
+    mutable int m_scaleUniform;
+    mutable int m_matrixUniform;
 
     mutable int m_kernelWidth;
     mutable int m_kernelHeight;
@@ -242,10 +116,8 @@ QPixmapFilter *QGLContextPrivate::createPixmapFilter(int type) const
     return 0;
 }
 
-#if !defined(QT_OPENGL_ES_2)
 extern void qt_add_rect_to_array(const QRectF &r, q_vertexType *array);
 extern void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, q_vertexType *array);
-#endif
 
 static void qgl_drawTexture(const QRectF &rect, int tx_width, int tx_height, const QRectF & src)
 {
@@ -294,10 +166,12 @@ static const char *qt_gl_colorize_filter =
         "}";
 
 QGLPixmapColorizeFilter::QGLPixmapColorizeFilter()
-    : m_program(QLatin1String(qt_gl_colorize_filter))
 {
-    m_program.setUniform(m_program.getUniformLocation(QLatin1String("texture")), 0); // GL_TEXTURE_0
-    m_colorUniform = m_program.getUniformLocation(QLatin1String("color"));
+    m_program.addShader(QGLShader::FragmentShader, qt_gl_colorize_filter);
+    m_program.link();
+    m_program.enable();
+    m_program.setUniformValue(m_program.uniformLocation("texture"), GLint(0)); // GL_TEXTURE_0
+    m_colorUniform = m_program.uniformLocation("color");
 }
 
 bool QGLPixmapColorizeFilter::processGL(QPainter *, const QPointF &pos, const QPixmap &src, const QRectF &srcRect) const
@@ -305,10 +179,10 @@ bool QGLPixmapColorizeFilter::processGL(QPainter *, const QPointF &pos, const QP
     bindTexture(src);
 
     QColor col = color();
-    m_program.setUniform(m_colorUniform, col.redF(), col.greenF(), col.blueF());
+    m_program.enable();
+    m_program.setUniformValue(m_colorUniform, col.redF(), col.greenF(), col.blueF());
 
     QRectF target = (srcRect.isNull() ? QRectF(src.rect()) : srcRect).translated(pos);
-    m_program.enable();
     qgl_drawTexture(target, src.width(), src.height(), srcRect);
     m_program.disable();
 
@@ -316,17 +190,17 @@ bool QGLPixmapColorizeFilter::processGL(QPainter *, const QPointF &pos, const QP
 }
 
 // generates convolution filter code for arbitrary sized kernel
-QString QGLPixmapConvolutionFilter::generateConvolutionShader() const {
+QByteArray QGLPixmapConvolutionFilter::generateConvolutionShader() const {
     QByteArray code;
-    code.append("uniform sampler2D texture;\n");
-    code.append("uniform vec2 inv_texture_size;\n");
-    code.append("uniform float matrix[");
+    code.append("uniform sampler2D texture;\n"
+                "uniform vec2 inv_texture_size;\n"
+                "uniform float matrix[");
     code.append(QByteArray::number(m_kernelWidth * m_kernelHeight));
-    code.append("];\n");
-    code.append("vec2 offset[");
+    code.append("];\n"
+                "vec2 offset[");
     code.append(QByteArray::number(m_kernelWidth*m_kernelHeight));
-    code.append("];\n");
-    code.append("void main(void) {\n");
+    code.append("];\n"
+                "void main(void) {\n");
 
     for(int y = 0; y < m_kernelHeight; y++) {
         for(int x = 0; x < m_kernelWidth; x++) {
@@ -336,23 +210,22 @@ QString QGLPixmapConvolutionFilter::generateConvolutionShader() const {
             code.append(QByteArray::number(x-(int)(m_kernelWidth/2)));
             code.append(".0, inv_texture_size.y * ");
             code.append(QByteArray::number((int)(m_kernelHeight/2)-y));
-            code.append(".0)");
-            code.append(";\n");
+            code.append(".0);\n");
         }
     }
 
-    code.append("  int i = 0;\n");
-    code.append("  vec2 coords = gl_TexCoord[0].st;\n");
-    code.append("  vec4 sum = vec4(0.0);\n");
-    code.append("  for (i = 0; i < ");
+    code.append("  int i = 0;\n"
+                "  vec2 coords = gl_TexCoord[0].st;\n"
+                "  vec4 sum = vec4(0.0);\n"
+                "  for (i = 0; i < ");
     code.append(QByteArray::number(m_kernelWidth * m_kernelHeight));
-    code.append("; i++) {\n");
-    code.append("    vec4 tmp = texture2D(texture,coords+offset[i]);\n");
-    code.append("    sum += matrix[i] * tmp;\n");
-    code.append("  }\n");
-    code.append("  gl_FragColor = sum;\n");
-    code.append("}");
-    return QLatin1String(code);
+    code.append("; i++) {\n"
+                "    vec4 tmp = texture2D(texture,coords+offset[i]);\n"
+                "    sum += matrix[i] * tmp;\n"
+                "  }\n"
+                "  gl_FragColor = sum;\n"
+                "}");
+    return code;
 }
 
 QGLPixmapConvolutionFilter::QGLPixmapConvolutionFilter()
@@ -384,10 +257,12 @@ bool QGLPixmapConvolutionFilter::processGL(QPainter *, const QPointF &pos, const
         m_kernelWidth = columns();
         m_kernelHeight = rows();
 
-        QString code = generateConvolutionShader();
-        m_program = new QGLSLProgram(code);
-        m_scaleUniform = m_program->getUniformLocation(QLatin1String("inv_texture_size"));
-        m_matrixUniform = m_program->getUniformLocation(QLatin1String("matrix"));
+        QByteArray code = generateConvolutionShader();
+        m_program = new QGLShaderProgram();
+        m_program->addShader(QGLShader::FragmentShader, code);
+        m_program->link();
+        m_scaleUniform = m_program->uniformLocation("inv_texture_size");
+        m_matrixUniform = m_program->uniformLocation("matrix");
     }
 
     const qreal *kernel = convolutionKernel();
@@ -397,10 +272,10 @@ bool QGLPixmapConvolutionFilter::processGL(QPainter *, const QPointF &pos, const
 
     const qreal iw = 1.0 / src.width();
     const qreal ih = 1.0 / src.height();
-    m_program->setUniform(m_scaleUniform, iw, ih);
-    m_program->setUniform(m_matrixUniform, m_kernelWidth * m_kernelHeight, conv);
-
     m_program->enable();
+    m_program->setUniformValue(m_scaleUniform, iw, ih);
+    m_program->setUniformValueArray(m_matrixUniform, conv, m_kernelWidth * m_kernelHeight, 1);
+
     qgl_drawTexture(target, src.width(), src.height(), boundingRectFor(srcRect));
     m_program->disable();
     return true;
diff --git a/src/opengl/qglpixmapfilter_p.h b/src/opengl/qglpixmapfilter_p.h
index dc2eea6..d6742fc 100644
--- a/src/opengl/qglpixmapfilter_p.h
+++ b/src/opengl/qglpixmapfilter_p.h
@@ -87,35 +87,6 @@ public:
     }
 };
 
-class Q_OPENGL_EXPORT QGLSLProgram
-{
-public:
-    QGLSLProgram(const QString &src);
-    ~QGLSLProgram();
-
-    bool success() const;
-
-    void enable();
-    void disable();
-
-    int getUniformLocation(const QString &name);
-
-    void setUniform(int uniform, int value);
-    void setUniform(int uniform, qreal value);
-    void setUniform(int uniform, qreal v1, qreal v2);
-    void setUniform(int uniform, qreal v1, qreal v2, qreal v3);
-    void setUniform(int uniform, qreal v1, qreal v2, qreal v3, qreal v4);
-    void setUniform(int uniform, int count, float *v);
-
-private:
-    GLuint m_shader;
-    GLuint m_program;
-
-    GLint m_valid;
-
-    const QGLContext *ctx;
-};
-
 QT_END_NAMESPACE
 
 QT_END_HEADER
diff --git a/src/opengl/qglshaderprogram.cpp b/src/opengl/qglshaderprogram.cpp
new file mode 100644
index 0000000..37732dd
--- /dev/null
+++ b/src/opengl/qglshaderprogram.cpp
@@ -0,0 +1,2986 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qglshaderprogram.h"
+#include "qglextensions_p.h"
+#include "qgl_p.h"
+#include <QtCore/qdebug.h>
+#include <QtCore/qfile.h>
+#include <QtCore/qvarlengtharray.h>
+#include <QtCore/qvector.h>
+
+QT_BEGIN_NAMESPACE
+
+#if !defined(QT_OPENGL_ES_1_CL) && !defined(QT_OPENGL_ES_1)
+
+/*!
+    \class QGLShaderProgram
+    \brief The QGLShaderProgram class allows OpenGL shader programs to be linked and used.
+    \since 4.6
+
+    \section1 Introduction
+
+    This class supports shader programs written in the OpenGL Shading
+    Language (GLSL) and in the OpenGL/ES Shading Language (GLSL/ES).
+
+    QGLShader and QGLShaderProgram shelter the programmer from the details of
+    compiling and linking vertex and fragment shaders.
+
+    The following example creates a vertex shader program using the
+    supplied source \c{code}.  Once compiled and linked, the shader
+    program is activated in the current QGLContext by calling
+    QGLShaderProgram::enable():
+
+    \code
+    QGLShader shader(QGLShader::VertexShader);
+    shader.compile(code);
+
+    QGLShaderProgram program(context);
+    program.addShader(shader);
+    program.link();
+
+    program.enable();
+    \endcode
+
+    \section1 Writing portable shaders
+
+    Shader programs can be difficult to reuse across OpenGL implementations
+    because of varying levels of support for standard vertex attributes and
+    uniform variables.  In particular, GLSL/ES lacks all of the
+    standard variables that are present on desktop OpenGL systems:
+    \c{gl_Vertex}, \c{gl_Normal}, \c{gl_Color}, and so on.  Desktop OpenGL
+    lacks the variable qualifiers \c{highp}, \c{mediump}, and \c{lowp}.
+
+    The QGLShaderProgram class makes the process of writing portable shaders
+    easier by prefixing all shader programs with the following lines on
+    desktop OpenGL:
+
+    \code
+    #define highp
+    #define mediump
+    #define lowp
+    \endcode
+
+    This makes it possible to run most GLSL/ES shader programs
+    on desktop systems.  The programmer should restrict themselves
+    to just features that are present in GLSL/ES, and avoid
+    standard variable names that only work on the desktop.
+    
+    \section1 Simple shader example
+
+    \code
+    program.addShader(QGLShader::VertexShader,
+        "attribute highp vec4 vertex;\n"
+        "attribute mediump mat4 matrix;\n"
+        "void main(void)\n"
+        "{\n"
+        "   gl_Position = matrix * vertex;\n"
+        "}");
+    program.addShader(QGLShader::FragmentShader,
+        "uniform mediump vec4 color;\n"
+        "void main(void)\n"
+        "{\n"
+        "   gl_FragColor = color;\n"
+        "}");
+    program.link();
+    program.enable();
+
+    int vertexLocation = program.attributeLocation("vertex");
+    int matrixLocation = program.attributeLocation("matrix");
+    int colorLocation = program.uniformLocation("color");
+    \endcode
+
+    With the above shader program active, we can draw a green triangle
+    as follows:
+
+    \code
+    static GLfloat const triangleVertices[] = {
+        60.0f,  10.0f,  0.0f,
+        110.0f, 110.0f, 0.0f,
+        10.0f,  110.0f, 0.0f
+    };
+
+    QColor color(0, 255, 0, 255);
+
+    QMatrix4x4 pmvMatrix;
+    pmvMatrix.ortho(rect());
+
+    program.setAttributeArray(vertexLocation, triangleVertices, 3);
+    program.setUniformValue(matrixLocation, pmvMatrix);
+    program.setUniformValue(colorLocation, color);
+
+    glDrawArrays(GL_TRIANGLES, 0, 3);
+    \endcode
+
+    \section1 Partial shaders
+
+    Desktop GLSL can attach an arbitrary number of vertex and fragment
+    shaders to a shader program.  Embedded GLSL/ES on the other hand
+    supports only a single shader of each type on a shader program.
+
+    Multiple shaders of the same type can be useful when large libraries
+    of shaders are needed.  Common functions can be factored out into
+    library shaders that can be reused in multiple shader programs.
+
+    To support this use of shaders, the application programmer can
+    create shaders with the QGLShader::PartialVertexShader and
+    QGLShader::PartialFragmentShader types.  These types direct
+    QGLShader and QGLShaderProgram to delay shader compilation until
+    link time.
+
+    When link() is called, the sources for the partial shaders are
+    concatenated, and a single vertex or fragment shader is compiled
+    and linked into the shader program.
+
+    It is more efficient to use the QGLShader::VertexShader and
+    QGLShader::FragmentShader when there is only one shader of that
+    type in the program.
+
+    \sa QGLShader
+*/
+
+/*!
+    \class QGLShader
+    \brief The QGLShader class allows OpenGL shaders to be compiled.
+    \since 4.6
+
+    This class supports shaders written in the OpenGL Shading Language (GLSL)
+    and in the OpenGL/ES Shading Language (GLSL/ES).
+
+    QGLShader and QGLShaderProgram shelter the programmer from the details of
+    compiling and linking vertex and fragment shaders.
+
+    \sa QGLShaderProgram
+*/
+
+/*!
+    \enum QGLShader::ShaderType
+    This enum specifies the type of QGLShader that is being created.
+
+    \value VertexShader Vertex shader written in the OpenGL Shading Language (GLSL).
+    \value FragmentShader Fragment shader written in the OpenGL Shading Language (GLSL).
+    \value PartialVertexShader Partial vertex shader that will be concatenated with all other partial vertex shaders at link time.
+    \value PartialFragmentShader Partial fragment shader that will be concatenated with all other partial fragment shaders at link time.
+*/
+
+#ifndef GL_FRAGMENT_SHADER
+#define GL_FRAGMENT_SHADER 0x8B30
+#endif
+#ifndef GL_VERTEX_SHADER
+#define GL_VERTEX_SHADER 0x8B31
+#endif
+#ifndef GL_COMPILE_STATUS
+#define GL_COMPILE_STATUS 0x8B81
+#endif
+#ifndef GL_LINK_STATUS
+#define GL_LINK_STATUS 0x8B82
+#endif
+#ifndef GL_INFO_LOG_LENGTH
+#define GL_INFO_LOG_LENGTH 0x8B84
+#endif
+#ifndef GL_ACTIVE_UNIFORMS
+#define GL_ACTIVE_UNIFORMS 0x8B86
+#endif
+#ifndef GL_ACTIVE_UNIFORM_MAX_LENGTH
+#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
+#endif
+#ifndef GL_ACTIVE_ATTRIBUTES
+#define GL_ACTIVE_ATTRIBUTES 0x8B89
+#endif
+#ifndef GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
+#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
+#endif
+#ifndef GL_CURRENT_VERTEX_ATTRIB
+#define GL_CURRENT_VERTEX_ATTRIB 0x8626
+#endif
+#ifndef GL_SHADER_SOURCE_LENGTH
+#define GL_SHADER_SOURCE_LENGTH 0x8B88
+#endif
+#ifndef GL_SHADER_BINARY_FORMATS
+#define GL_SHADER_BINARY_FORMATS          0x8DF8
+#endif
+#ifndef GL_NUM_SHADER_BINARY_FORMATS
+#define GL_NUM_SHADER_BINARY_FORMATS      0x8DF9
+#endif
+
+class QGLShaderPrivate
+{
+public:
+    QGLShaderPrivate(QGLShader::ShaderType type, const QGLContext *ctx)
+        : context(ctx)
+        , shader(0)
+        , shaderType(type)
+        , compiled(false)
+        , isPartial(type == QGLShader::PartialVertexShader ||
+                    type == QGLShader::PartialFragmentShader)
+        , hasPartialSource(false)
+    {
+    }
+
+    const QGLContext *context;
+    GLuint shader;
+    QGLShader::ShaderType shaderType;
+    bool compiled;
+    bool isPartial;
+    bool hasPartialSource;
+    QString log;
+    QByteArray partialSource;
+
+    bool create();
+    bool compile(QGLShader *q);
+};
+
+#define ctx     context
+
+bool QGLShaderPrivate::create()
+{
+    if (isPartial)
+        return true;
+    if (!context)
+        context = QGLContext::currentContext();
+    if (!context)
+        return false;
+    if (qt_resolve_glsl_extensions(const_cast<QGLContext *>(context))) {
+        if (shaderType == QGLShader::VertexShader)
+            shader = glCreateShader(GL_VERTEX_SHADER);
+        else
+            shader = glCreateShader(GL_FRAGMENT_SHADER);
+        if (!shader) {
+            qWarning() << "QGLShader: could not create shader";
+            return false;
+        }
+        return true;
+    } else {
+        return false;
+    }
+}
+
+bool QGLShaderPrivate::compile(QGLShader *q)
+{
+    // Partial shaders are compiled during QGLShaderProgram::link().
+    if (isPartial && hasPartialSource) {
+        compiled = true;
+        return true;
+    }
+    if (!shader)
+        return false;
+    glCompileShader(shader);
+    GLint value = 0;
+    glGetShaderiv(shader, GL_COMPILE_STATUS, &value);
+    compiled = (value != 0);
+    value = 0;
+    glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &value);
+    if (!compiled && value > 1) {
+        char *logbuf = new char [value];
+        GLint len;
+        glGetShaderInfoLog(shader, value, &len, logbuf);
+        log = QString::fromLatin1(logbuf);
+        QString name = q->objectName();
+        if (name.isEmpty())
+            qWarning() << "QGLShader::compile:" << log;
+        else
+            qWarning() << "QGLShader::compile[" << name << "]:" << log;
+        delete [] logbuf;
+    }
+    return compiled;
+}
+
+#undef ctx
+#define ctx d->context
+
+/*!
+    Constructs a new QGLShader object of the specified \a type
+    and attaches it to \a parent.  If shader programs are not supported,
+    QGLShaderProgram::hasShaderPrograms() will return false.
+
+    This constructor is normally followed by a call to compile()
+    or compileFile().
+
+    The shader will be associated with the current QGLContext.
+
+    \sa compile(), compileFile()
+*/
+QGLShader::QGLShader(QGLShader::ShaderType type, QObject *parent)
+    : QObject(parent)
+{
+    d = new QGLShaderPrivate(type, QGLContext::currentContext());
+    d->create();
+}
+
+/*!
+    Constructs a new QGLShader object from the source code in \a fileName
+    and attaches it to \a parent.  If the filename ends in \c{.fsh},
+    it is assumed to be a fragment shader, otherwise it is assumed to
+    be a vertex shader (normally the extension is \c{.vsh} for vertex shaders).
+    If the shader could not be loaded, then isCompiled() will return false.
+
+    The shader will be associated with the current QGLContext.
+
+    \sa isCompiled()
+*/
+QGLShader::QGLShader(const QString& fileName, QObject *parent)
+    : QObject(parent)
+{
+    if (fileName.endsWith(QLatin1String(".fsh"), Qt::CaseInsensitive))
+        d = new QGLShaderPrivate(QGLShader::FragmentShader, QGLContext::currentContext());
+    else
+        d = new QGLShaderPrivate(QGLShader::VertexShader, QGLContext::currentContext());
+    if (d->create() && !compileFile(fileName)) {
+        if (d->shader)
+            glDeleteShader(d->shader);
+        d->shader = 0;
+    }
+}
+
+/*!
+    Constructs a new QGLShader object of the specified \a type from the
+    source code in \a fileName and attaches it to \a parent.
+    If the shader could not be loaded, then isCompiled() will return false.
+
+    The shader will be associated with the current QGLContext.
+
+    \sa isCompiled()
+*/
+QGLShader::QGLShader
+        (const QString& fileName, QGLShader::ShaderType type, QObject *parent)
+    : QObject(parent)
+{
+    d = new QGLShaderPrivate(type, QGLContext::currentContext());
+    if (d->create() && !compileFile(fileName)) {
+        if (d->shader)
+            glDeleteShader(d->shader);
+        d->shader = 0;
+    }
+}
+
+/*!
+    Constructs a new QGLShader object of the specified \a type
+    and attaches it to \a parent.  If shader programs are not supported,
+    then QGLShaderProgram::hasShaderPrograms() will return false.
+
+    This constructor is normally followed by a call to compile()
+    or compileFile().
+
+    The shader will be associated with \a context.
+
+    \sa compile(), compileFile()
+*/
+QGLShader::QGLShader(QGLShader::ShaderType type, const QGLContext *context, QObject *parent)
+    : QObject(parent)
+{
+    d = new QGLShaderPrivate(type, context);
+    d->create();
+}
+
+/*!
+    Constructs a new QGLShader object from the source code in \a fileName
+    and attaches it to \a parent.  If the filename ends in \c{.fsh},
+    it is assumed to be a fragment shader, otherwise it is assumed to
+    be a vertex shader (normally the extension is \c{.vsh} for vertex shaders).
+    If the shader could not be loaded, then isCompiled() will return false.
+
+    The shader will be associated with \a context.
+
+    \sa isCompiled()
+*/
+QGLShader::QGLShader(const QString& fileName, const QGLContext *context, QObject *parent)
+    : QObject(parent)
+{
+    if (fileName.endsWith(QLatin1String(".fsh"), Qt::CaseInsensitive))
+        d = new QGLShaderPrivate(QGLShader::FragmentShader, context);
+    else
+        d = new QGLShaderPrivate(QGLShader::VertexShader, context);
+    if (d->create() && !compileFile(fileName)) {
+        if (d->shader)
+            glDeleteShader(d->shader);
+        d->shader = 0;
+    }
+}
+
+/*!
+    Constructs a new QGLShader object of the specified \a type from the
+    source code in \a fileName and attaches it to \a parent.
+    If the shader could not be loaded, then isCompiled() will return false.
+
+    The shader will be associated with \a context.
+
+    \sa isCompiled()
+*/
+QGLShader::QGLShader
+        (const QString& fileName, QGLShader::ShaderType type, const QGLContext *context, QObject *parent)
+    : QObject(parent)
+{
+    d = new QGLShaderPrivate(type, context);
+    if (d->create() && !compileFile(fileName)) {
+        if (d->shader)
+            glDeleteShader(d->shader);
+        d->shader = 0;
+    }
+}
+
+/*!
+    Deletes this shader.  If the shader has been attached to a
+    QGLShaderProgram object, then the actual shader will stay around
+    until the QGLShaderProgram is destroyed.
+*/
+QGLShader::~QGLShader()
+{
+    if (d->shader)
+        glDeleteShader(d->shader);
+    delete d;
+}
+
+/*!
+    Returns the type of this shader.
+*/
+QGLShader::ShaderType QGLShader::shaderType() const
+{
+    return d->shaderType;
+}
+
+// The precision qualifiers are useful on OpenGL/ES systems,
+// but usually not present on desktop systems.  Define the
+// keywords to empty strings on desktop systems.
+#ifndef QT_OPENGL_ES
+#define QGL_DEFINE_QUALIFIERS 1
+static const char qualifierDefines[] =
+    "#define lowp\n"
+    "#define mediump\n"
+    "#define highp\n";
+#endif
+
+/*!
+    Sets the \a source code for this shader and compiles it.
+    Returns true if the source was successfully compiled, false otherwise.
+
+    If shaderType() is PartialVertexShader or PartialFragmentShader,
+    then this function will always return true, even if the source code
+    is invalid.  Partial shaders are compiled when QGLShaderProgram::link()
+    is called.
+
+    \sa compileFile()
+*/
+bool QGLShader::compile(const char *source)
+{
+    if (d->isPartial) {
+        d->partialSource = QByteArray(source);
+        d->hasPartialSource = true;
+        return d->compile(this);
+    } else if (d->shader) {
+        QVarLengthArray<const char *> src;
+#ifdef QGL_DEFINE_QUALIFIERS
+        src.append(qualifierDefines);
+#endif
+        src.append(source);
+        glShaderSource(d->shader, src.size(), src.data(), 0);
+        return d->compile(this);
+    } else {
+        return false;
+    }
+}
+
+/*!
+    \overload
+
+    Sets the \a source code for this shader and compiles it.
+    Returns true if the source was successfully compiled, false otherwise.
+
+    If shaderType() is PartialVertexShader or PartialFragmentShader,
+    then this function will always return true, even if the source code
+    is invalid.  Partial shaders are compiled when QGLShaderProgram::link()
+    is called.
+
+    \sa compileFile()
+*/
+bool QGLShader::compile(const QByteArray& source)
+{
+    return compile(source.constData());
+}
+
+/*!
+    \overload
+
+    Sets the \a source code for this shader and compiles it.
+    Returns true if the source was successfully compiled, false otherwise.
+
+    If shaderType() is PartialVertexShader or PartialFragmentShader,
+    then this function will always return true, even if the source code
+    is invalid.  Partial shaders are compiled when QGLShaderProgram::link()
+    is called.
+
+    \sa compileFile()
+*/
+bool QGLShader::compile(const QString& source)
+{
+    return compile(source.toLatin1().constData());
+}
+
+/*!
+    Sets the source code for this shader to the contents of \a fileName
+    and compiles it.  Returns true if the file could be opened and the
+    source compiled, false otherwise.
+
+    If shaderType() is PartialVertexShader or PartialFragmentShader,
+    then this function will always return true, even if the source code
+    is invalid.  Partial shaders are compiled when QGLShaderProgram::link()
+    is called.
+
+    \sa compile()
+*/
+bool QGLShader::compileFile(const QString& fileName)
+{
+    QFile file(fileName);
+    if (!file.open(QFile::ReadOnly)) {
+        qWarning() << "QGLShader: Unable to open file" << fileName;
+        return false;
+    }
+
+    QByteArray contents = file.readAll();
+    return compile(contents.constData());
+}
+
+/*!
+    Sets the binary code for this shader to the \a length bytes from
+    the array \a binary.  The \a format specifies how the binary data
+    should be interpreted by the OpenGL engine.  Returns true if the
+    binary was set on the shader; false otherwise.
+
+    This function cannot be used with PartialVertexShader or
+    PartialFragmentShader.
+
+    If this function succeeds, then the shader will be considered compiled.
+
+    \sa shaderBinaryFormats()
+*/
+bool QGLShader::setShaderBinary(GLenum format, const void *binary, int length)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (!glShaderBinary)
+        return false;
+#endif
+    if (d->isPartial || !d->shader)
+        return false;
+    glGetError();   // Clear error state.
+    glShaderBinary(1, &(d->shader), format, binary, length);
+    d->compiled = (glGetError() == GL_NO_ERROR);
+    return d->compiled;
+}
+
+/*!
+    Sets the binary code for this shader to the \a length bytes from
+    the array \a binary.  The \a format specifies how the binary data
+    should be interpreted by the OpenGL engine.  Returns true if the
+    binary was set on the shader; false otherwise.
+
+    The \a otherShader will also have binary code set on it.  This is
+    for the case where \a binary contains both vertex and fragment
+    shader code.
+
+    This function cannot be used with PartialVertexShader or
+    PartialFragmentShader.
+
+    If this function succeeds, then the shader will be considered compiled.
+
+    \sa shaderBinaryFormats()
+*/
+bool QGLShader::setShaderBinary
+    (QGLShader& otherShader, GLenum format, const void *binary, int length)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (!glShaderBinary)
+        return false;
+#endif
+    if (d->isPartial || !d->shader)
+        return false;
+    if (otherShader.d->isPartial || !otherShader.d->shader)
+        return false;
+    glGetError();   // Clear error state.
+    GLuint shaders[2];
+    shaders[0] = d->shader;
+    shaders[1] = otherShader.d->shader;
+    glShaderBinary(2, shaders, format, binary, length);
+    d->compiled = (glGetError() == GL_NO_ERROR);
+    otherShader.d->compiled = d->compiled;
+    return d->compiled;
+}
+
+/*!
+    Returns a list of all binary formats that are supported by
+    setShaderBinary() on this system.
+
+    \sa setShaderBinary()
+*/
+QList<GLenum> QGLShader::shaderBinaryFormats()
+{
+    GLint num;
+    QList<GLenum> list;
+    glGetError();   // Clear error state.
+    glGetIntegerv(GL_NUM_SHADER_BINARY_FORMATS, &num);
+    if (glGetError() != GL_NO_ERROR || num <= 0)
+        return list;
+    QVarLengthArray<GLint> formats(num);
+    glGetIntegerv(GL_SHADER_BINARY_FORMATS, formats.data());
+    for (GLint i = 0; i < num; ++i)
+        list += (GLenum)(formats[i]);
+    return list;
+}
+
+/*!
+    Returns the source code for this shader.
+
+    \sa compile()
+*/
+QByteArray QGLShader::sourceCode() const
+{
+    if (d->isPartial)
+        return d->partialSource;
+    if (!d->shader)
+        return QByteArray();
+    GLint size = 0;
+    glGetShaderiv(d->shader, GL_SHADER_SOURCE_LENGTH, &size);
+    if (size <= 0)
+        return QByteArray();
+    GLint len = 0;
+    char *source = new char [size];
+    glGetShaderSource(d->shader, size, &len, source);
+    QByteArray src(source);
+    delete [] source;
+    return src;
+}
+
+/*!
+    Returns true if this shader has been compiled; false otherwise.
+
+    \sa compile()
+*/
+bool QGLShader::isCompiled() const
+{
+    return d->compiled;
+}
+
+/*!
+    Returns the errors and warnings that occurred during the last compile.
+
+    \sa compile()
+*/
+QString QGLShader::log() const
+{
+    return d->log;
+}
+
+/*!
+    Returns the OpenGL identifier associated with this shader.
+
+    If shaderType() is PartialVertexShader or PartialFragmentShader,
+    this function will always return zero.  Partial shaders are
+    created and compiled when QGLShaderProgram::link() is called.
+
+    \sa QGLShaderProgram::programId()
+*/
+GLuint QGLShader::shaderId() const
+{
+    return d->shader;
+}
+
+#undef ctx
+#define ctx context
+
+class QGLShaderProgramPrivate
+{
+public:
+    QGLShaderProgramPrivate(const QGLContext *ctx)
+        : context(ctx)
+        , program(0)
+        , linked(false)
+        , inited(false)
+        , hasPartialShaders(false)
+        , vertexShader(0)
+        , fragmentShader(0)
+    {
+    }
+    ~QGLShaderProgramPrivate()
+    {
+        if (program)
+            glDeleteProgram(program);
+    }
+
+    const QGLContext *context;
+    GLuint program;
+    bool linked;
+    bool inited;
+    bool hasPartialShaders;
+    QString log;
+    QList<QGLShader *> shaders;
+    QList<QGLShader *> anonShaders;
+    QGLShader *vertexShader;
+    QGLShader *fragmentShader;
+};
+
+#undef ctx
+#define ctx d->context
+
+/*!
+    Constructs a new shader program and attaches it to \a parent.
+    The program will be invalid until addShader() is called.
+
+    The shader program will be associated with the current QGLContext.
+
+    \sa addShader()
+*/
+QGLShaderProgram::QGLShaderProgram(QObject *parent)
+    : QObject(parent)
+{
+    d = new QGLShaderProgramPrivate(QGLContext::currentContext());
+}
+
+/*!
+    Constructs a new shader program and attaches it to \a parent.
+    The program will be invalid until addShader() is called.
+
+    The shader program will be associated with \a context.
+
+    \sa addShader()
+*/
+QGLShaderProgram::QGLShaderProgram(const QGLContext *context, QObject *parent)
+    : QObject(parent)
+{
+    d = new QGLShaderProgramPrivate(context);
+}
+
+/*!
+    Deletes this shader program.
+*/
+QGLShaderProgram::~QGLShaderProgram()
+{
+    delete d;
+}
+
+bool QGLShaderProgram::init()
+{
+    if (d->program || d->inited)
+        return true;
+    d->inited = true;
+    if (!d->context)
+        d->context = QGLContext::currentContext();
+    if (!d->context)
+        return false;
+    if (qt_resolve_glsl_extensions(const_cast<QGLContext *>(d->context))) {
+        d->program = glCreateProgram();
+        if (!(d->program)) {
+            qWarning() << "QGLShaderProgram: could not create shader program";
+            return false;
+        }
+        return true;
+    } else {
+        qWarning() << "QGLShaderProgram: shader programs are not supported";
+        return false;
+    }
+}
+
+/*!
+    Adds a compiled \a shader to this shader program.  Returns true
+    if the shader could be added, or false otherwise.
+
+    Ownership of the \a shader object remains with the caller.
+    It will not be deleted when this QGLShaderProgram instance
+    is deleted.  This allows the caller to add the same shader
+    to multiple shader programs.
+
+    \sa removeShader(), link(), removeAllShaders()
+*/
+bool QGLShaderProgram::addShader(QGLShader *shader)
+{
+    if (!init())
+        return false;
+    if (d->shaders.contains(shader))
+        return true;    // Already added to this shader program.
+    if (d->program && shader) {
+        if (!shader->d->compiled)
+            return false;
+        if (!shader->d->isPartial) {
+            if (!shader->d->shader)
+                return false;
+            glAttachShader(d->program, shader->d->shader);
+        } else {
+            d->hasPartialShaders = true;
+        }
+        d->linked = false;  // Program needs to be relinked.
+        d->shaders.append(shader);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+/*!
+    Compiles \a source as a shader of the specified \a type and
+    adds it to this shader program.  Returns true if compilation
+    was successful, false otherwise.  The compilation errors
+    and warnings will be made available via log().
+
+    This function is intended to be a short-cut for quickly
+    adding vertex and fragment shaders to a shader program without
+    creating an instance of QGLShader first.
+
+    \sa removeShader(), link(), log(), removeAllShaders()
+*/
+bool QGLShaderProgram::addShader(QGLShader::ShaderType type, const char *source)
+{
+    if (!init())
+        return false;
+    QGLShader *shader = new QGLShader(type, this);
+    if (!shader->compile(source)) {
+        d->log = shader->log();
+        delete shader;
+        return false;
+    }
+    d->anonShaders.append(shader);
+    return addShader(shader);
+}
+
+/*!
+    \overload
+
+    Compiles \a source as a shader of the specified \a type and
+    adds it to this shader program.  Returns true if compilation
+    was successful, false otherwise.  The compilation errors
+    and warnings will be made available via log().
+
+    This function is intended to be a short-cut for quickly
+    adding vertex and fragment shaders to a shader program without
+    creating an instance of QGLShader first.
+
+    \sa removeShader(), link(), log(), removeAllShaders()
+*/
+bool QGLShaderProgram::addShader(QGLShader::ShaderType type, const QByteArray& source)
+{
+    return addShader(type, source.constData());
+}
+
+/*!
+    \overload
+
+    Compiles \a source as a shader of the specified \a type and
+    adds it to this shader program.  Returns true if compilation
+    was successful, false otherwise.  The compilation errors
+    and warnings will be made available via log().
+
+    This function is intended to be a short-cut for quickly
+    adding vertex and fragment shaders to a shader program without
+    creating an instance of QGLShader first.
+
+    \sa removeShader(), link(), log(), removeAllShaders()
+*/
+bool QGLShaderProgram::addShader(QGLShader::ShaderType type, const QString& source)
+{
+    return addShader(type, source.toLatin1().constData());
+}
+
+/*!
+    Removes \a shader from this shader program.  The object is not deleted.
+
+    \sa addShader(), link(), removeAllShaders()
+*/
+void QGLShaderProgram::removeShader(QGLShader *shader)
+{
+    if (d->program && shader && shader->d->shader) {
+        glDetachShader(d->program, shader->d->shader);
+        d->linked = false;  // Program needs to be relinked.
+    }
+    d->shaders.removeAll(shader);
+    d->anonShaders.removeAll(shader);
+}
+
+/*!
+    Returns a list of all shaders that have been added to this shader
+    program using addShader().
+
+    \sa addShader(), removeShader()
+*/
+QList<QGLShader *> QGLShaderProgram::shaders() const
+{
+    return d->shaders;
+}
+
+/*!
+    Removes all of the shaders that were added to this program previously.
+    The QGLShader objects for the shaders will not be deleted if they
+    were constructed externally.  QGLShader objects that are constructed
+    internally by QGLShaderProgram will be deleted.
+
+    \sa addShader(), removeShader()
+*/
+void QGLShaderProgram::removeAllShaders()
+{
+    foreach (QGLShader *shader, d->shaders) {
+        if (d->program && shader && shader->d->shader)
+            glDetachShader(d->program, shader->d->shader);
+    }
+    foreach (QGLShader *shader, d->anonShaders) {
+        // Delete shader objects that were created anonymously.
+        delete shader;
+    }
+    d->shaders.clear();
+    d->anonShaders.clear();
+    d->linked = false;  // Program needs to be relinked.
+}
+
+#if defined(QT_OPENGL_ES_2)
+
+#ifndef GL_PROGRAM_BINARY_LENGTH_OES
+#define GL_PROGRAM_BINARY_LENGTH_OES        0x8741
+#endif
+#ifndef GL_NUM_PROGRAM_BINARY_FORMATS_OES
+#define GL_NUM_PROGRAM_BINARY_FORMATS_OES   0x87FE
+#endif
+#ifndef GL_PROGRAM_BINARY_FORMATS_OES
+#define GL_PROGRAM_BINARY_FORMATS_OES       0x87FF
+#endif
+
+#endif
+
+/*!
+    Returns the program binary associated with this shader program.
+    The numeric identifier of the program binary format is returned
+    in \a format.  The \c OES_get_program_binary extension will need
+    to be supported by the system for binary retrieval to succeed.
+
+    Returns an empty QByteArray if the program binary cannot be
+    retrieved on this system, or the shader program has not yet
+    been linked.
+
+    The returned binary can be supplied to setProgramBinary() on the
+    same machine at some future point to reload the program.  It contains
+    the compiled code of all of the shaders that were attached to the
+    program at the time programBinary() is called.
+
+    \sa setProgramBinary(), programBinaryFormats()
+*/
+QByteArray QGLShaderProgram::programBinary(int *format) const
+{
+#if defined(QT_OPENGL_ES_2)
+    if (!isLinked())
+        return QByteArray();
+
+    // Get the length of the binary data, bailing out if there is none.
+    GLint length = 0;
+    glGetProgramiv(d->program, GL_PROGRAM_BINARY_LENGTH_OES, &length);
+    if (length <= 0)
+        return QByteArray();
+
+    // Retrieve the binary data.
+    QByteArray binary(length, 0);
+    GLenum binaryFormat;
+    glGetProgramBinaryOES(d->program, length, 0, &binaryFormat, binary.data());
+    if (format)
+        *format = (int)binaryFormat;
+    return binary;
+#else
+    Q_UNUSED(format);
+    return QByteArray();
+#endif
+}
+
+/*!
+    Sets the \a binary for this shader program according to \a format.
+    Returns true if the binary was set, or false if the binary format
+    is not supported or this system does not support program binaries.
+    The program will be linked if the load succeeds.
+
+    \sa programBinary(), programBinaryFormats(), isLinked()
+*/
+bool QGLShaderProgram::setProgramBinary(int format, const QByteArray& binary)
+{
+#if defined(QT_OPENGL_ES_2)
+    // Load the binary and check that it was linked correctly.
+    glProgramBinaryOES(d->program, (GLenum)format,
+                       binary.constData(), binary.size());
+    GLint value = 0;
+    glGetProgramiv(d->program, GL_LINK_STATUS, &value);
+    d->linked = (value != 0);
+    value = 0;
+    glGetProgramiv(d->program, GL_INFO_LOG_LENGTH, &value);
+    d->log = QString();
+    if (value > 1) {
+        char *logbuf = new char [value];
+        GLint len;
+        glGetProgramInfoLog(d->program, value, &len, logbuf);
+        d->log = QString::fromLatin1(logbuf);
+        QString name = objectName();
+        if (name.isEmpty())
+            qWarning() << "QGLShader::setProgramBinary:" << d->log;
+        else
+            qWarning() << "QGLShader::setProgramBinary[" << name << "]:" << d->log;
+        delete [] logbuf;
+    }
+    return d->linked;
+#else
+    Q_UNUSED(format);
+    Q_UNUSED(binary);
+    return false;
+#endif
+}
+
+/*!
+    Returns the list of program binary formats that are accepted by
+    this system for use with setProgramBinary().
+
+    \sa programBinary(), setProgramBinary()
+*/
+QList<int> QGLShaderProgram::programBinaryFormats()
+{
+#if defined(QT_OPENGL_ES_2)
+    GLint count = 0;
+    glGetIntegerv(GL_NUM_PROGRAM_BINARY_FORMATS_OES, &count);
+    if (count <= 0)
+        return QList<int>();
+    QVector<int> list;
+    list.resize(count);
+    glGetIntegerv(GL_PROGRAM_BINARY_FORMATS_OES, list.data());
+    return list.toList();
+#else
+    return QList<int>();
+#endif
+}
+
+/*!
+    Links together the shaders that were added to this program with
+    addShader().  Returns true if the link was successful or
+    false otherwise.  If the link failed, the error messages can
+    be retrieved with log().
+
+    Subclasses can override this function to initialize attributes
+    and uniform variables for use in specific shader programs.
+
+    If the shader program was already linked, calling this
+    function again will force it to be re-linked.
+
+    \sa addShader(), log()
+*/
+bool QGLShaderProgram::link()
+{
+    if (!d->program)
+        return false;
+    if (d->hasPartialShaders) {
+        // Compile the partial vertex and fragment shaders.
+        QByteArray vertexSource;
+        QByteArray fragmentSource;
+        foreach (QGLShader *shader, d->shaders) {
+            if (shader->shaderType() == QGLShader::PartialVertexShader)
+                vertexSource += shader->sourceCode();
+            else if (shader->shaderType() == QGLShader::PartialFragmentShader)
+                fragmentSource += shader->sourceCode();
+        }
+        if (vertexSource.isEmpty()) {
+            if (d->vertexShader) {
+                glDetachShader(d->program, d->vertexShader->d->shader);
+                delete d->vertexShader;
+                d->vertexShader = 0;
+            }
+        } else {
+            if (!d->vertexShader) {
+                d->vertexShader =
+                    new QGLShader(QGLShader::VertexShader, this);
+            }
+            if (!d->vertexShader->compile(vertexSource)) {
+                d->log = d->vertexShader->log();
+                return false;
+            }
+            glAttachShader(d->program, d->vertexShader->d->shader);
+        }
+        if (fragmentSource.isEmpty()) {
+            if (d->fragmentShader) {
+                glDetachShader(d->program, d->fragmentShader->d->shader);
+                delete d->fragmentShader;
+                d->fragmentShader = 0;
+            }
+        } else {
+            if (!d->fragmentShader) {
+                d->fragmentShader =
+                    new QGLShader(QGLShader::FragmentShader, this);
+            }
+            if (!d->fragmentShader->compile(fragmentSource)) {
+                d->log = d->fragmentShader->log();
+                return false;
+            }
+            glAttachShader(d->program, d->fragmentShader->d->shader);
+        }
+    }
+    glLinkProgram(d->program);
+    GLint value = 0;
+    glGetProgramiv(d->program, GL_LINK_STATUS, &value);
+    d->linked = (value != 0);
+    value = 0;
+    glGetProgramiv(d->program, GL_INFO_LOG_LENGTH, &value);
+    d->log = QString();
+    if (value > 1) {
+        char *logbuf = new char [value];
+        GLint len;
+        glGetProgramInfoLog(d->program, value, &len, logbuf);
+        d->log = QString::fromLatin1(logbuf);
+        QString name = objectName();
+        if (name.isEmpty())
+            qWarning() << "QGLShader::link:" << d->log;
+        else
+            qWarning() << "QGLShader::link[" << name << "]:" << d->log;
+        delete [] logbuf;
+    }
+    return d->linked;
+}
+
+/*!
+    Returns true if this shader program has been linked; false otherwise.
+
+    \sa link()
+*/
+bool QGLShaderProgram::isLinked() const
+{
+    return d->linked;
+}
+
+/*!
+    Returns the errors and warnings that occurred during the last link()
+    or addShader() with explicitly specified source code.
+
+    \sa link()
+*/
+QString QGLShaderProgram::log() const
+{
+    return d->log;
+}
+
+/*!
+    Enable use of this shader program in the currently active QGLContext.
+    Returns true if the program was successfully enabled; false
+    otherwise.  If the shader program has not yet been linked,
+    or it needs to be re-linked, this function will call link().
+
+    \sa link(), disable()
+*/
+bool QGLShaderProgram::enable()
+{
+    if (!d->program)
+        return false;
+    if (!d->linked && !link())
+        return false;
+    glUseProgram(d->program);
+    return true;
+}
+
+#undef ctx
+#define ctx QGLContext::currentContext()
+
+/*!
+    Disables the active shader program in the current QGLContext.
+    This is equivalent to calling \c{glUseProgram(0)}.
+
+    \sa enable()
+*/
+void QGLShaderProgram::disable()
+{
+#if defined(QT_OPENGL_ES_2)
+    glUseProgram(0);
+#else
+    if (glUseProgram)
+        glUseProgram(0);
+#endif
+}
+
+#undef ctx
+#define ctx d->context
+
+/*!
+    Returns the OpenGL identifier associated with this shader program.
+
+    \sa QGLShader::shaderId()
+*/
+GLuint QGLShaderProgram::programId() const
+{
+    return d->program;
+}
+
+/*!
+    Binds the attribute \a name to the specified \a location.  This
+    function can be called before or after the program has been linked.
+    Any attributes that have not been explicitly bound when the program
+    is linked will be assigned locations automatically.
+
+    \sa attributeLocation()
+*/
+void QGLShaderProgram::bindAttributeLocation(const char *name, int location)
+{
+    glBindAttribLocation(d->program, location, name);
+}
+
+/*!
+    \overload
+
+    Binds the attribute \a name to the specified \a location.  This
+    function can be called before or after the program has been linked.
+    Any attributes that have not been explicitly bound when the program
+    is linked will be assigned locations automatically.
+
+    \sa attributeLocation()
+*/
+void QGLShaderProgram::bindAttributeLocation(const QByteArray& name, int location)
+{
+    glBindAttribLocation(d->program, location, name.constData());
+}
+
+/*!
+    \overload
+
+    Binds the attribute \a name to the specified \a location.  This
+    function can be called before or after the program has been linked.
+    Any attributes that have not been explicitly bound when the program
+    is linked will be assigned locations automatically.
+
+    \sa attributeLocation()
+*/
+void QGLShaderProgram::bindAttributeLocation(const QString& name, int location)
+{
+    glBindAttribLocation(d->program, location, name.toLatin1().constData());
+}
+
+/*!
+    Returns the location of the attribute \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    attribute for this shader program.
+
+    \sa uniformLocation(), bindAttributeLocation()
+*/
+int QGLShaderProgram::attributeLocation(const char *name) const
+{
+    if (d->linked) {
+        return glGetAttribLocation(d->program, name);
+    } else {
+        qWarning() << "QGLShaderProgram::attributeLocation(" << name
+                   << "): shader program is not linked";
+        return -1;
+    }
+}
+
+/*!
+    \overload
+
+    Returns the location of the attribute \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    attribute for this shader program.
+
+    \sa uniformLocation(), bindAttributeLocation()
+*/
+int QGLShaderProgram::attributeLocation(const QByteArray& name) const
+{
+    return attributeLocation(name.constData());
+}
+
+/*!
+    \overload
+
+    Returns the location of the attribute \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    attribute for this shader program.
+
+    \sa uniformLocation(), bindAttributeLocation()
+*/
+int QGLShaderProgram::attributeLocation(const QString& name) const
+{
+    return attributeLocation(name.toLatin1().constData());
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, GLfloat value)
+{
+    if (location != -1)
+        glVertexAttrib1fv(location, &value);
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, GLfloat value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to
+    the 2D vector (\a x, \a y).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, GLfloat x, GLfloat y)
+{
+    if (location != -1) {
+        GLfloat values[2] = {x, y};
+        glVertexAttrib2fv(location, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to
+    the 2D vector (\a x, \a y).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, GLfloat x, GLfloat y)
+{
+    setAttributeValue(attributeLocation(name), x, y);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to
+    the 3D vector (\a x, \a y, \a z).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+        (int location, GLfloat x, GLfloat y, GLfloat z)
+{
+    if (location != -1) {
+        GLfloat values[3] = {x, y, z};
+        glVertexAttrib3fv(location, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to
+    the 3D vector (\a x, \a y, \a z).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+        (const char *name, GLfloat x, GLfloat y, GLfloat z)
+{
+    setAttributeValue(attributeLocation(name), x, y, z);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to
+    the 4D vector (\a x, \a y, \a z, \a w).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+        (int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    if (location != -1) {
+        GLfloat values[4] = {x, y, z, w};
+        glVertexAttrib4fv(location, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to
+    the 4D vector (\a x, \a y, \a z, \a w).
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+        (const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    setAttributeValue(attributeLocation(name), x, y, z, w);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, const QVector2D& value)
+{
+    if (location != -1)
+        glVertexAttrib2fv(location, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, const QVector2D& value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, const QVector3D& value)
+{
+    if (location != -1)
+        glVertexAttrib3fv(location, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, const QVector3D& value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, const QVector4D& value)
+{
+    if (location != -1)
+        glVertexAttrib4fv(location, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, const QVector4D& value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(int location, const QColor& value)
+{
+    if (location != -1) {
+        GLfloat values[4] = {value.redF(), value.greenF(), value.blueF(), value.alphaF()};
+        glVertexAttrib4fv(location, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to \a value.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue(const char *name, const QColor& value)
+{
+    setAttributeValue(attributeLocation(name), value);
+}
+
+/*!
+    Sets the attribute at \a location in the current context to the
+    contents of \a values, which contains \a columns elements, each
+    consisting of \a rows elements.  The \a rows value should be
+    1, 2, 3, or 4.  This function is typically used to set matrix
+    values and column vectors.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+    (int location, const GLfloat *values, int columns, int rows)
+{
+    if (rows < 1 || rows > 4) {
+        qWarning() << "QGLShaderProgram::setAttributeValue: rows" << rows << "not supported";
+        return;
+    }
+    if (location != -1) {
+        while (columns-- > 0) {
+            if (rows == 1)
+                glVertexAttrib1fv(location, values);
+            else if (rows == 2)
+                glVertexAttrib2fv(location, values);
+            else if (rows == 3)
+                glVertexAttrib3fv(location, values);
+            else
+                glVertexAttrib4fv(location, values);
+            values += rows;
+            ++location;
+        }
+    }
+}
+
+/*!
+    \overload
+
+    Sets the attribute called \a name in the current context to the
+    contents of \a values, which contains \a columns elements, each
+    consisting of \a rows elements.  The \a rows value should be
+    1, 2, 3, or 4.  This function is typically used to set matrix
+    values and column vectors.
+
+    \sa setUniformValue()
+*/
+void QGLShaderProgram::setAttributeValue
+    (const char *name, const GLfloat *values, int columns, int rows)
+{
+    setAttributeValue(attributeLocation(name), values, columns, rows);
+}
+
+/*!
+    Sets an array of vertex \a values on the attribute at \a location
+    in this shader program.  The \a size indicates the number of
+    components per vertex (1, 2, 3, or 4), and the \a stride indicates
+    the number of bytes between vertices.  A default \a stride value
+    of zero indicates that the vertices are densely packed in \a values.
+
+    \sa setAttributeValue(), setUniformValue(), disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+    (int location, const GLfloat *values, int size, int stride)
+{
+    if (location != -1) {
+        glVertexAttribPointer(location, size, GL_FLOAT, GL_FALSE,
+                              stride, values);
+        glEnableVertexAttribArray(location);
+    }
+}
+
+/*!
+    Sets an array of 2D vertex \a values on the attribute at \a location
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    \sa setAttributeValue(), setUniformValue(), disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (int location, const QVector2D *values, int stride)
+{
+    if (location != -1) {
+        glVertexAttribPointer(location, 2, GL_FLOAT, GL_FALSE,
+                              stride, values);
+        glEnableVertexAttribArray(location);
+    }
+}
+
+/*!
+    Sets an array of 3D vertex \a values on the attribute at \a location
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    \sa setAttributeValue(), setUniformValue(), disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (int location, const QVector3D *values, int stride)
+{
+    if (location != -1) {
+        glVertexAttribPointer(location, 3, GL_FLOAT, GL_FALSE,
+                              stride, values);
+        glEnableVertexAttribArray(location);
+    }
+}
+
+/*!
+    Sets an array of 4D vertex \a values on the attribute at \a location
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    \sa setAttributeValue(), setUniformValue(), disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (int location, const QVector4D *values, int stride)
+{
+    if (location != -1) {
+        glVertexAttribPointer(location, 4, GL_FLOAT, GL_FALSE,
+                              stride, values);
+        glEnableVertexAttribArray(location);
+    }
+}
+
+/*!
+    \overload
+
+    Sets an array of vertex \a values on the attribute called \a name
+    in this shader program.  The \a size indicates the number of
+    components per vertex (1, 2, 3, or 4), and the \a stride indicates
+    the number of bytes between vertices.  A default \a stride value
+    of zero indicates that the vertices are densely packed in \a values.
+
+    \sa setAttributeValue(), setUniformValue(), disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+    (const char *name, const GLfloat *values, int size, int stride)
+{
+    setAttributeArray(attributeLocation(name), values, size, stride);
+}
+
+/*!
+    \overload
+
+    Sets an array of 2D vertex \a values on the attribute called \a name
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    \sa setAttributeValue(), setUniformValue(), disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (const char *name, const QVector2D *values, int stride)
+{
+    setAttributeArray(attributeLocation(name), values, stride);
+}
+
+/*!
+    \overload
+
+    Sets an array of 3D vertex \a values on the attribute called \a name
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    \sa setAttributeValue(), setUniformValue(), disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (const char *name, const QVector3D *values, int stride)
+{
+    setAttributeArray(attributeLocation(name), values, stride);
+}
+
+/*!
+    \overload
+
+    Sets an array of 4D vertex \a values on the attribute called \a name
+    in this shader program.  The \a stride indicates the number of bytes
+    between vertices.  A default \a stride value of zero indicates that
+    the vertices are densely packed in \a values.
+
+    \sa setAttributeValue(), setUniformValue(), disableAttributeArray()
+*/
+void QGLShaderProgram::setAttributeArray
+        (const char *name, const QVector4D *values, int stride)
+{
+    setAttributeArray(attributeLocation(name), values, stride);
+}
+
+/*!
+    Disables the vertex array at \a location in this shader program
+    that was enabled by a previous call to setAttributeArray().
+
+    \sa setAttributeArray(), setAttributeValue(), setUniformValue()
+*/
+void QGLShaderProgram::disableAttributeArray(int location)
+{
+    if (location != -1)
+        glDisableVertexAttribArray(location);
+}
+
+/*!
+    \overload
+
+    Disables the vertex array called \a name in this shader program
+    that was enabled by a previous call to setAttributeArray().
+
+    \sa setAttributeArray(), setAttributeValue(), setUniformValue()
+*/
+void QGLShaderProgram::disableAttributeArray(const char *name)
+{
+    disableAttributeArray(attributeLocation(name));
+}
+
+/*!
+    Returns the location of the uniform variable \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    uniform variable for this shader program.
+
+    \sa attributeLocation()
+*/
+int QGLShaderProgram::uniformLocation(const char *name) const
+{
+    if (d->linked) {
+        return glGetUniformLocation(d->program, name);
+    } else {
+        qWarning() << "QGLShaderProgram::uniformLocation(" << name
+                   << "): shader program is not linked";
+        return -1;
+    }
+}
+
+/*!
+    \overload
+
+    Returns the location of the uniform variable \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    uniform variable for this shader program.
+
+    \sa attributeLocation()
+*/
+int QGLShaderProgram::uniformLocation(const QByteArray& name) const
+{
+    return uniformLocation(name.constData());
+}
+
+/*!
+    \overload
+
+    Returns the location of the uniform variable \a name within this shader
+    program's parameter list.  Returns -1 if \a name is not a valid
+    uniform variable for this shader program.
+
+    \sa attributeLocation()
+*/
+int QGLShaderProgram::uniformLocation(const QString& name) const
+{
+    return uniformLocation(name.toLatin1().constData());
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, GLfloat value)
+{
+    if (location != -1)
+        glUniform1fv(location, 1, &value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, GLfloat value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, GLint value)
+{
+    if (location != -1)
+        glUniform1i(location, value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, GLint value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+    This function should be used when setting sampler values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, GLuint value)
+{
+    if (location != -1)
+        glUniform1i(location, value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.  This function should be used when setting sampler values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, GLuint value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the 2D vector (\a x, \a y).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, GLfloat x, GLfloat y)
+{
+    if (location != -1) {
+        GLfloat values[2] = {x, y};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to
+    the 2D vector (\a x, \a y).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, GLfloat x, GLfloat y)
+{
+    setUniformValue(uniformLocation(name), x, y);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the 3D vector (\a x, \a y, \a z).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue
+        (int location, GLfloat x, GLfloat y, GLfloat z)
+{
+    if (location != -1) {
+        GLfloat values[3] = {x, y, z};
+        glUniform3fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to
+    the 3D vector (\a x, \a y, \a z).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue
+        (const char *name, GLfloat x, GLfloat y, GLfloat z)
+{
+    setUniformValue(uniformLocation(name), x, y, z);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the 4D vector (\a x, \a y, \a z, \a w).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue
+        (int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    if (location != -1) {
+        GLfloat values[4] = {x, y, z, w};
+        glUniform4fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to
+    the 4D vector (\a x, \a y, \a z, \a w).
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue
+        (const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    setUniformValue(uniformLocation(name), x, y, z, w);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QVector2D& value)
+{
+    if (location != -1)
+        glUniform2fv(location, 1, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QVector2D& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QVector3D& value)
+{
+    if (location != -1)
+        glUniform3fv(location, 1, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QVector3D& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QVector4D& value)
+{
+    if (location != -1)
+        glUniform4fv(location, 1, reinterpret_cast<const GLfloat *>(&value));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QVector4D& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the red, green, blue, and alpha components of \a color.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QColor& color)
+{
+    if (location != -1) {
+        GLfloat values[4] = {color.redF(), color.greenF(), color.blueF(), color.alphaF()};
+        glUniform4fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to
+    the red, green, blue, and alpha components of \a color.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QColor& color)
+{
+    setUniformValue(uniformLocation(name), color);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the x and y coordinates of \a point.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QPoint& point)
+{
+    if (location != -1) {
+        GLfloat values[4] = {point.x(), point.y()};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable associated with \a name in the current
+    context to the x and y coordinates of \a point.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QPoint& point)
+{
+    setUniformValue(uniformLocation(name), point);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the x and y coordinates of \a point.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QPointF& point)
+{
+    if (location != -1) {
+        GLfloat values[4] = {point.x(), point.y()};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable associated with \a name in the current
+    context to the x and y coordinates of \a point.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QPointF& point)
+{
+    setUniformValue(uniformLocation(name), point);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the width and height of the given \a size.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QSize& size)
+{
+    if (location != -1) {
+        GLfloat values[4] = {size.width(), size.width()};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable associated with \a name in the current
+    context to the width and height of the given \a size.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QSize& size)
+{
+    setUniformValue(uniformLocation(name), size);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to
+    the width and height of the given \a size.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QSizeF& size)
+{
+    if (location != -1) {
+        GLfloat values[4] = {size.width(), size.height()};
+        glUniform2fv(location, 1, values);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable associated with \a name in the current
+    context to the width and height of the given \a size.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QSizeF& size)
+{
+    setUniformValue(uniformLocation(name), size);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 2x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix2x2& value)
+{
+    if (location != -1)
+        glUniformMatrix2fv(location, 1, GL_FALSE, value.data());
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 2x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix2x2& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 2x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix2x3& value)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (location != -1) {
+        if (glUniformMatrix2x3fv) {
+            // OpenGL 2.1+: pass the matrix directly.
+            glUniformMatrix2x3fv(location, 1, GL_FALSE, value.data());
+        } else {
+            // OpenGL 2.0: pass the matrix columns as a vector.
+            glUniform3fv(location, 2, value.data());
+        }
+    }
+#else
+    if (location != -1)
+        glUniform3fv(location, 2, value.data());
+#endif
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 2x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix2x3& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 2x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix2x4& value)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (location != -1) {
+        if (glUniformMatrix2x4fv) {
+            // OpenGL 2.1+: pass the matrix directly.
+            glUniformMatrix2x4fv(location, 1, GL_FALSE, value.data());
+        } else {
+            // OpenGL 2.0: pass the matrix columns as a vector.
+            glUniform4fv(location, 2, value.data());
+        }
+    }
+#else
+    if (location != -1)
+        glUniform4fv(location, 2, value.data());
+#endif
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 2x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix2x4& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 3x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix3x2& value)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (location != -1) {
+        if (glUniformMatrix3x2fv) {
+            // OpenGL 2.1+: pass the matrix directly.
+            glUniformMatrix3x2fv(location, 1, GL_FALSE, value.data());
+        } else {
+            // OpenGL 2.0: pass the matrix columns as a vector.
+            glUniform2fv(location, 3, value.data());
+        }
+    }
+#else
+    if (location != -1)
+        glUniform2fv(location, 3, value.data());
+#endif
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 3x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix3x2& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 3x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix3x3& value)
+{
+    if (location != -1)
+        glUniformMatrix3fv(location, 1, GL_FALSE, value.data());
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 3x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix3x3& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 3x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix3x4& value)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (location != -1) {
+        if (glUniformMatrix3x4fv) {
+            // OpenGL 2.1+: pass the matrix directly.
+            glUniformMatrix3x4fv(location, 1, GL_FALSE, value.data());
+        } else {
+            // OpenGL 2.0: pass the matrix columns as a vector.
+            glUniform4fv(location, 3, value.data());
+        }
+    }
+#else
+    if (location != -1)
+        glUniform4fv(location, 3, value.data());
+#endif
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 3x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix3x4& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 4x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix4x2& value)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (location != -1) {
+        if (glUniformMatrix4x2fv) {
+            // OpenGL 2.1+: pass the matrix directly.
+            glUniformMatrix4x2fv(location, 1, GL_FALSE, value.data());
+        } else {
+            // OpenGL 2.0: pass the matrix columns as a vector.
+            glUniform2fv(location, 4, value.data());
+        }
+    }
+#else
+    if (location != -1)
+        glUniform2fv(location, 4, value.data());
+#endif
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 4x2 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix4x2& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 4x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix4x3& value)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (location != -1) {
+        if (glUniformMatrix4x3fv) {
+            // OpenGL 2.1+: pass the matrix directly.
+            glUniformMatrix4x3fv(location, 1, GL_FALSE, value.data());
+        } else {
+            // OpenGL 2.0: pass the matrix columns as a vector.
+            glUniform3fv(location, 4, value.data());
+        }
+    }
+#else
+    if (location != -1)
+        glUniform3fv(location, 4, value.data());
+#endif
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 4x3 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix4x3& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context
+    to a 4x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const QMatrix4x4& value)
+{
+    if (location != -1)
+        glUniformMatrix4fv(location, 1, GL_FALSE, value.data());
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 4x4 matrix \a value.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const QMatrix4x4& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable at \a location in the current context
+    to a 4x4 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(int location, const GLfloat value[4][4])
+{
+    if (location != -1)
+        glUniformMatrix4fv(location, 1, GL_FALSE, value[0]);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 4x4 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[4][4])
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable at \a location in the current context to a
+    3x3 transformation matrix \a value that is specified as a QTransform value.
+
+    To set a QTransform value as a 4x4 matrix in a shader, use
+    \c{setUniformValue(location, QMatrix4x4(value))}.
+*/
+void QGLShaderProgram::setUniformValue(int location, const QTransform& value)
+{
+    if (location != -1) {
+        GLfloat mat[3][3] = {
+            {value.m11(), value.m12(), value.m13()},
+            {value.m21(), value.m22(), value.m23()},
+            {value.m31(), value.m32(), value.m33()}
+        };
+        glUniformMatrix3fv(location, 1, GL_FALSE, mat[0]);
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context to a
+    3x3 transformation matrix \a value that is specified as a QTransform value.
+
+    To set a QTransform value as a 4x4 matrix in a shader, use
+    \c{setUniformValue(name, QMatrix4x4(value))}.
+*/
+void QGLShaderProgram::setUniformValue
+        (const char *name, const QTransform& value)
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const GLint *values, int count)
+{
+    if (location != -1)
+        glUniform1iv(location, count, values);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray
+        (const char *name, const GLint *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count elements of \a values.  This overload
+    should be used when setting an array of sampler values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const GLuint *values, int count)
+{
+    if (location != -1)
+        glUniform1iv(location, count, reinterpret_cast<const GLint *>(values));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count elements of \a values.  This overload
+    should be used when setting an array of sampler values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray
+        (const char *name, const GLuint *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count elements of \a values.  Each element
+    has \a size components.  The \a size must be 1, 2, 3, or 4.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const GLfloat *values, int count, int size)
+{
+    if (location != -1) {
+        if (size == 1)
+            glUniform1fv(location, count, values);
+        else if (size == 2)
+            glUniform2fv(location, count, values);
+        else if (size == 3)
+            glUniform3fv(location, count, values);
+        else if (size == 4)
+            glUniform4fv(location, count, values);
+        else
+            qWarning() << "QGLShaderProgram::setUniformValue: size" << size << "not supported";
+    }
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count elements of \a values.  Each element
+    has \a size components.  The \a size must be 1, 2, 3, or 4.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray
+        (const char *name, const GLfloat *values, int count, int size)
+{
+    setUniformValueArray(uniformLocation(name), values, count, size);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 2D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QVector2D *values, int count)
+{
+    if (location != -1)
+        glUniform2fv(location, count, reinterpret_cast<const GLfloat *>(values));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 2D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QVector2D *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 3D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QVector3D *values, int count)
+{
+    if (location != -1)
+        glUniform3fv(location, count, reinterpret_cast<const GLfloat *>(values));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 3D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QVector3D *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 4D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QVector4D *values, int count)
+{
+    if (location != -1)
+        glUniform4fv(location, count, reinterpret_cast<const GLfloat *>(values));
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 4D vector elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QVector4D *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+// We may have to repack matrix arrays if the matrix types
+// contain additional flag bits.  Especially QMatrix4x4.
+#define setUniformMatrixArray(func,location,values,count,type,cols,rows) \
+    if (location == -1 || count <= 0) \
+        return; \
+    if (count == 1 || sizeof(type) == cols * rows * sizeof(GLfloat)) { \
+        func(location, count, GL_FALSE, values->constData()); \
+    } else { \
+        QVarLengthArray<GLfloat> temp(cols * rows * count); \
+        for (int index = 0; index < count; ++index) { \
+            qMemCopy(temp.data() + cols * rows * index, \
+                     values[index].constData(), cols * rows * sizeof(GLfloat)); \
+        } \
+        func(location, count, GL_FALSE, temp.constData()); \
+    }
+#if !defined(QT_OPENGL_ES_2)
+#define setUniformGenericMatrixArray(func,colfunc,location,values,count,type,cols,rows) \
+    if (location == -1 || count <= 0) \
+        return; \
+    if (count == 1 || sizeof(type) == cols * rows * sizeof(GLfloat)) { \
+        if (func) \
+            func(location, count, GL_FALSE, values->constData()); \
+        else \
+            colfunc(location, cols * count, values->constData()); \
+    } else { \
+        QVarLengthArray<GLfloat> temp(cols * rows * count); \
+        for (int index = 0; index < count; ++index) { \
+            qMemCopy(temp.data() + cols * rows * index, \
+                     values[index].constData(), cols * rows * sizeof(GLfloat)); \
+        } \
+        if (func) \
+            func(location, count, GL_FALSE, temp.constData()); \
+        else \
+            colfunc(location, count * cols, temp.constData()); \
+    }
+#else
+#define setUniformGenericMatrixArray(func,colfunc,location,values,count,type,cols,rows) \
+    if (location == -1 || count <= 0) \
+        return; \
+    if (count == 1 || sizeof(type) == cols * rows * sizeof(GLfloat)) { \
+        colfunc(location, cols * count, values->constData()); \
+    } else { \
+        QVarLengthArray<GLfloat> temp(cols * rows * count); \
+        for (int index = 0; index < count; ++index) { \
+            qMemCopy(temp.data() + cols * rows * index, \
+                     values[index].constData(), cols * rows * sizeof(GLfloat)); \
+        } \
+        colfunc(location, count * cols, temp.constData()); \
+    }
+#endif
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 2x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix2x2 *values, int count)
+{
+    setUniformMatrixArray
+        (glUniformMatrix2fv, location, values, count, QMatrix2x2, 2, 2);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 2x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix2x2 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 2x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix2x3 *values, int count)
+{
+    setUniformGenericMatrixArray
+        (glUniformMatrix2x3fv, glUniform3fv, location, values, count,
+         QMatrix2x3, 2, 3);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 2x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix2x3 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 2x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix2x4 *values, int count)
+{
+    setUniformGenericMatrixArray
+        (glUniformMatrix2x4fv, glUniform4fv, location, values, count,
+         QMatrix2x4, 2, 4);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 2x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix2x4 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 3x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix3x2 *values, int count)
+{
+    setUniformGenericMatrixArray
+        (glUniformMatrix3x2fv, glUniform2fv, location, values, count,
+         QMatrix3x2, 3, 2);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 3x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix3x2 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 3x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix3x3 *values, int count)
+{
+    setUniformMatrixArray
+        (glUniformMatrix3fv, location, values, count, QMatrix3x3, 3, 3);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 3x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix3x3 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 3x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix3x4 *values, int count)
+{
+    setUniformGenericMatrixArray
+        (glUniformMatrix3x4fv, glUniform4fv, location, values, count,
+         QMatrix3x4, 3, 4);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 3x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix3x4 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 4x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix4x2 *values, int count)
+{
+    setUniformGenericMatrixArray
+        (glUniformMatrix4x2fv, glUniform2fv, location, values, count,
+         QMatrix4x2, 4, 2);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 4x2 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix4x2 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 4x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix4x3 *values, int count)
+{
+    setUniformGenericMatrixArray
+        (glUniformMatrix4x3fv, glUniform3fv, location, values, count,
+         QMatrix4x3, 4, 3);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 4x3 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix4x3 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Sets the uniform variable array at \a location in the current
+    context to the \a count 4x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(int location, const QMatrix4x4 *values, int count)
+{
+    setUniformMatrixArray
+        (glUniformMatrix4fv, location, values, count, QMatrix4x4, 4, 4);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable array called \a name in the current
+    context to the \a count 4x4 matrix elements of \a values.
+
+    \sa setAttributeValue()
+*/
+void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix4x4 *values, int count)
+{
+    setUniformValueArray(uniformLocation(name), values, count);
+}
+
+/*!
+    Returns true if shader programs written in the OpenGL Shading
+    Language (GLSL) are supported on this system; false otherwise.
+
+    The \a context is used to resolve the GLSL extensions.
+    If \a context is null, then QGLContext::currentContext() is used.
+*/
+bool QGLShaderProgram::hasShaderPrograms(const QGLContext *context)
+{
+#if !defined(QT_OPENGL_ES_2)
+    if (!context)
+        context = QGLContext::currentContext();
+    if (!context)
+        return false;
+    return qt_resolve_glsl_extensions(const_cast<QGLContext *>(context));
+#else
+    Q_UNUSED(context);
+    return true;
+#endif
+}
+
+#endif
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglshaderprogram.h b/src/opengl/qglshaderprogram.h
new file mode 100644
index 0000000..06bff42
--- /dev/null
+++ b/src/opengl/qglshaderprogram.h
@@ -0,0 +1,293 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLSHADERPROGRAM_H
+#define QGLSHADERPROGRAM_H
+
+#include <QtOpenGL/qgl.h>
+#include <QtGui/qvector2d.h>
+#include <QtGui/qvector3d.h>
+#include <QtGui/qvector4d.h>
+#include <QtGui/qmatrix4x4.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+#if !defined(QT_OPENGL_ES_1_CL) && !defined(QT_OPENGL_ES_1)
+
+class QGLShaderProgram;
+class QGLShaderPrivate;
+
+class Q_OPENGL_EXPORT QGLShader : public QObject
+{
+    Q_OBJECT
+public:
+    enum ShaderType
+    {
+        VertexShader,
+        FragmentShader,
+        PartialVertexShader,
+        PartialFragmentShader
+    };
+
+    explicit QGLShader(QGLShader::ShaderType type, QObject *parent = 0);
+    explicit QGLShader(const QString& fileName, QObject *parent = 0);
+    QGLShader(const QString& fileName, QGLShader::ShaderType type, QObject *parent = 0);
+    QGLShader(QGLShader::ShaderType type, const QGLContext *context, QObject *parent = 0);
+    QGLShader(const QString& fileName, const QGLContext *context, QObject *parent = 0);
+    QGLShader(const QString& fileName, QGLShader::ShaderType type, const QGLContext *context, QObject *parent = 0);
+    virtual ~QGLShader();
+
+    QGLShader::ShaderType shaderType() const;
+
+    bool compile(const char *source);
+    bool compile(const QByteArray& source);
+    bool compile(const QString& source);
+    bool compileFile(const QString& fileName);
+
+    bool setShaderBinary(GLenum format, const void *binary, int length);
+    bool setShaderBinary(QGLShader& otherShader, GLenum format, const void *binary, int length);
+
+    static QList<GLenum> shaderBinaryFormats();
+
+    QByteArray sourceCode() const;
+
+    bool isCompiled() const;
+    QString log() const;
+
+    GLuint shaderId() const;
+
+private:
+    QGLShaderPrivate *d;
+
+    friend class QGLShaderProgram;
+
+    Q_DISABLE_COPY(QGLShader)
+};
+
+class QGLShaderProgramPrivate;
+
+class Q_OPENGL_EXPORT QGLShaderProgram : public QObject
+{
+    Q_OBJECT
+public:
+    explicit QGLShaderProgram(QObject *parent = 0);
+    explicit QGLShaderProgram(const QGLContext *context, QObject *parent = 0);
+    virtual ~QGLShaderProgram();
+
+    bool addShader(QGLShader *shader);
+    void removeShader(QGLShader *shader);
+    QList<QGLShader *> shaders() const;
+
+    bool addShader(QGLShader::ShaderType type, const char *source);
+    bool addShader(QGLShader::ShaderType type, const QByteArray& source);
+    bool addShader(QGLShader::ShaderType type, const QString& source);
+
+    void removeAllShaders();
+
+    QByteArray programBinary(int *format) const;
+    bool setProgramBinary(int format, const QByteArray& binary);
+    static QList<int> programBinaryFormats();
+
+    virtual bool link();
+    bool isLinked() const;
+    QString log() const;
+
+    bool enable();
+    static void disable();
+
+    GLuint programId() const;
+
+    void bindAttributeLocation(const char *name, int location);
+    void bindAttributeLocation(const QByteArray& name, int location);
+    void bindAttributeLocation(const QString& name, int location);
+
+    int attributeLocation(const char *name) const;
+    int attributeLocation(const QByteArray& name) const;
+    int attributeLocation(const QString& name) const;
+
+    void setAttributeValue(int location, GLfloat value);
+    void setAttributeValue(int location, GLfloat x, GLfloat y);
+    void setAttributeValue(int location, GLfloat x, GLfloat y, GLfloat z);
+    void setAttributeValue(int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void setAttributeValue(int location, const QVector2D& value);
+    void setAttributeValue(int location, const QVector3D& value);
+    void setAttributeValue(int location, const QVector4D& value);
+    void setAttributeValue(int location, const QColor& value);
+    void setAttributeValue(int location, const GLfloat *values, int columns, int rows);
+
+    void setAttributeValue(const char *name, GLfloat value);
+    void setAttributeValue(const char *name, GLfloat x, GLfloat y);
+    void setAttributeValue(const char *name, GLfloat x, GLfloat y, GLfloat z);
+    void setAttributeValue(const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void setAttributeValue(const char *name, const QVector2D& value);
+    void setAttributeValue(const char *name, const QVector3D& value);
+    void setAttributeValue(const char *name, const QVector4D& value);
+    void setAttributeValue(const char *name, const QColor& value);
+    void setAttributeValue(const char *name, const GLfloat *values, int columns, int rows);
+
+    void setAttributeArray
+        (int location, const GLfloat *values, int size, int stride = 0);
+    void setAttributeArray
+        (int location, const QVector2D *values, int stride = 0);
+    void setAttributeArray
+        (int location, const QVector3D *values, int stride = 0);
+    void setAttributeArray
+        (int location, const QVector4D *values, int stride = 0);
+    void setAttributeArray
+        (const char *name, const GLfloat *values, int size, int stride = 0);
+    void setAttributeArray
+        (const char *name, const QVector2D *values, int stride = 0);
+    void setAttributeArray
+        (const char *name, const QVector3D *values, int stride = 0);
+    void setAttributeArray
+        (const char *name, const QVector4D *values, int stride = 0);
+    void disableAttributeArray(int location);
+    void disableAttributeArray(const char *name);
+
+    int uniformLocation(const char *name) const;
+    int uniformLocation(const QByteArray& name) const;
+    int uniformLocation(const QString& name) const;
+
+    void setUniformValue(int location, GLfloat value);
+    void setUniformValue(int location, GLint value);
+    void setUniformValue(int location, GLuint value);
+    void setUniformValue(int location, GLfloat x, GLfloat y);
+    void setUniformValue(int location, GLfloat x, GLfloat y, GLfloat z);
+    void setUniformValue(int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void setUniformValue(int location, const QVector2D& value);
+    void setUniformValue(int location, const QVector3D& value);
+    void setUniformValue(int location, const QVector4D& value);
+    void setUniformValue(int location, const QColor& color);
+    void setUniformValue(int location, const QPoint& point);
+    void setUniformValue(int location, const QPointF& point);
+    void setUniformValue(int location, const QSize& size);
+    void setUniformValue(int location, const QSizeF& size);
+    void setUniformValue(int location, const QMatrix2x2& value);
+    void setUniformValue(int location, const QMatrix2x3& value);
+    void setUniformValue(int location, const QMatrix2x4& value);
+    void setUniformValue(int location, const QMatrix3x2& value);
+    void setUniformValue(int location, const QMatrix3x3& value);
+    void setUniformValue(int location, const QMatrix3x4& value);
+    void setUniformValue(int location, const QMatrix4x2& value);
+    void setUniformValue(int location, const QMatrix4x3& value);
+    void setUniformValue(int location, const QMatrix4x4& value);
+    void setUniformValue(int location, const GLfloat value[4][4]);
+    void setUniformValue(int location, const QTransform& value);
+
+    void setUniformValue(const char *name, GLfloat value);
+    void setUniformValue(const char *name, GLint value);
+    void setUniformValue(const char *name, GLuint value);
+    void setUniformValue(const char *name, GLfloat x, GLfloat y);
+    void setUniformValue(const char *name, GLfloat x, GLfloat y, GLfloat z);
+    void setUniformValue(const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    void setUniformValue(const char *name, const QVector2D& value);
+    void setUniformValue(const char *name, const QVector3D& value);
+    void setUniformValue(const char *name, const QVector4D& value);
+    void setUniformValue(const char *name, const QColor& color);
+    void setUniformValue(const char *name, const QPoint& point);
+    void setUniformValue(const char *name, const QPointF& point);
+    void setUniformValue(const char *name, const QSize& size);
+    void setUniformValue(const char *name, const QSizeF& size);
+    void setUniformValue(const char *name, const QMatrix2x2& value);
+    void setUniformValue(const char *name, const QMatrix2x3& value);
+    void setUniformValue(const char *name, const QMatrix2x4& value);
+    void setUniformValue(const char *name, const QMatrix3x2& value);
+    void setUniformValue(const char *name, const QMatrix3x3& value);
+    void setUniformValue(const char *name, const QMatrix3x4& value);
+    void setUniformValue(const char *name, const QMatrix4x2& value);
+    void setUniformValue(const char *name, const QMatrix4x3& value);
+    void setUniformValue(const char *name, const QMatrix4x4& value);
+    void setUniformValue(const char *name, const GLfloat value[4][4]);
+    void setUniformValue(const char *name, const QTransform& value);
+
+    void setUniformValueArray(int location, const GLfloat *values, int count, int size);
+    void setUniformValueArray(int location, const GLint *values, int count);
+    void setUniformValueArray(int location, const GLuint *values, int count);
+    void setUniformValueArray(int location, const QVector2D *values, int count);
+    void setUniformValueArray(int location, const QVector3D *values, int count);
+    void setUniformValueArray(int location, const QVector4D *values, int count);
+    void setUniformValueArray(int location, const QMatrix2x2 *values, int count);
+    void setUniformValueArray(int location, const QMatrix2x3 *values, int count);
+    void setUniformValueArray(int location, const QMatrix2x4 *values, int count);
+    void setUniformValueArray(int location, const QMatrix3x2 *values, int count);
+    void setUniformValueArray(int location, const QMatrix3x3 *values, int count);
+    void setUniformValueArray(int location, const QMatrix3x4 *values, int count);
+    void setUniformValueArray(int location, const QMatrix4x2 *values, int count);
+    void setUniformValueArray(int location, const QMatrix4x3 *values, int count);
+    void setUniformValueArray(int location, const QMatrix4x4 *values, int count);
+
+    void setUniformValueArray(const char *name, const GLfloat *values, int count, int size);
+    void setUniformValueArray(const char *name, const GLint *values, int count);
+    void setUniformValueArray(const char *name, const GLuint *values, int count);
+    void setUniformValueArray(const char *name, const QVector2D *values, int count);
+    void setUniformValueArray(const char *name, const QVector3D *values, int count);
+    void setUniformValueArray(const char *name, const QVector4D *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix2x2 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix2x3 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix2x4 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix3x2 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix3x3 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix3x4 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix4x2 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix4x3 *values, int count);
+    void setUniformValueArray(const char *name, const QMatrix4x4 *values, int count);
+
+    static bool hasShaderPrograms(const QGLContext *context = 0);
+
+private:
+    QGLShaderProgramPrivate *d;
+
+    Q_DISABLE_COPY(QGLShaderProgram)
+
+    bool init();
+};
+
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
diff --git a/src/opengl/qpaintengine_opengl.cpp b/src/opengl/qpaintengine_opengl.cpp
index c9fbc7e..5690c6b 100644
--- a/src/opengl/qpaintengine_opengl.cpp
+++ b/src/opengl/qpaintengine_opengl.cpp
@@ -39,7 +39,6 @@
 **
 ****************************************************************************/
 
-#include <private/qtextengine_p.h>
 #include <qdebug.h>
 #include <private/qfontengine_p.h>
 #include <qmath.h>
@@ -57,13 +56,11 @@
 #include "qpen.h"
 #include "qvarlengtharray.h"
 #include <private/qpainter_p.h>
-#include <qglpixelbuffer.h>
 #include <private/qglpixelbuffer_p.h>
 #include <private/qbezier_p.h>
 #include <qglframebufferobject.h>
 
 #include "private/qtessellator_p.h"
-#include "private/qwindowsurface_gl_p.h"
 
 #include "util/fragmentprograms_p.h"
 
@@ -125,35 +122,6 @@ struct QT_PointF {
     qreal y;
 };
 
-void qt_add_rect_to_array(const QRectF &r, q_vertexType *array)
-{
-    qreal left = r.left();
-    qreal right = r.right();
-    qreal top = r.top();
-    qreal bottom = r.bottom();
-
-    array[0] = f2vt(left);
-    array[1] = f2vt(top);
-    array[2] = f2vt(right);
-    array[3] = f2vt(top);
-    array[4] = f2vt(right);
-    array[5] = f2vt(bottom);
-    array[6] = f2vt(left);
-    array[7] = f2vt(bottom);
-}
-
-void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, q_vertexType *array)
-{
-    array[0] = f2vt(x1);
-    array[1] = f2vt(y1);
-    array[2] = f2vt(x2);
-    array[3] = f2vt(y1);
-    array[4] = f2vt(x2);
-    array[5] = f2vt(y2);
-    array[6] = f2vt(x1);
-    array[7] = f2vt(y2);
-}
-
 struct QGLTrapezoid
 {
     QGLTrapezoid()
@@ -190,180 +158,6 @@ const QGLTrapezoid QGLTrapezoid::translated(const QPointF &delta) const
     return trap;
 }
 
-class QGLDrawable {
-public:
-    QGLDrawable() : widget(0), buffer(0), fbo(0)
-                  , wsurf(0)
-        {}
-    inline void setDevice(QPaintDevice *pdev);
-    inline void swapBuffers();
-    inline void makeCurrent();
-    inline void doneCurrent();
-    inline QSize size() const;
-    inline QGLFormat format() const;
-    inline GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D, GLint format = GL_RGBA);
-    inline GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D, GLint format = GL_RGBA);
-    inline QColor backgroundColor() const;
-    inline QGLContext *context() const;
-    inline bool autoFillBackground() const;
-
-private:
-    bool wasBound;
-    QGLWidget *widget;
-    QGLPixelBuffer *buffer;
-    QGLFramebufferObject *fbo;
-#ifdef Q_WS_QWS
-    QWSGLWindowSurface *wsurf;
-#else
-    QGLWindowSurface *wsurf;
-#endif
-};
-
-void QGLDrawable::setDevice(QPaintDevice *pdev)
-{
-    wasBound = false;
-    widget = 0;
-    buffer = 0;
-    fbo = 0;
-#ifdef Q_WS_QWS
-    wsurf = 0;
-#endif
-    if (pdev->devType() == QInternal::Widget)
-        widget = static_cast<QGLWidget *>(pdev);
-    else if (pdev->devType() == QInternal::Pbuffer)
-        buffer = static_cast<QGLPixelBuffer *>(pdev);
-    else if (pdev->devType() == QInternal::FramebufferObject)
-        fbo = static_cast<QGLFramebufferObject *>(pdev);
-    else if (pdev->devType() == QInternal::UnknownDevice)
-#ifdef Q_WS_QWS
-        wsurf = static_cast<QWSGLPaintDevice*>(pdev)->windowSurface();
-#else
-        wsurf = static_cast<QGLWindowSurface *>(pdev);
-#endif
-}
-
-inline void QGLDrawable::swapBuffers()
-{
-    if (widget) {
-        if (widget->autoBufferSwap())
-            widget->swapBuffers();
-    } else {
-        glFlush();
-    }
-}
-
-inline void QGLDrawable::makeCurrent()
-{
-    if (widget)
-        widget->makeCurrent();
-    else if (buffer)
-        buffer->makeCurrent();
-    else if (wsurf)
-        wsurf->context()->makeCurrent();
-    else if (fbo) {
-        wasBound = fbo->isBound();
-        if (!wasBound)
-            fbo->bind();
-    }
-}
-
-inline void QGLDrawable::doneCurrent()
-{
-    if (fbo && !wasBound)
-        fbo->release();
-}
-
-inline QSize QGLDrawable::size() const
-{
-    if (widget) {
-        return QSize(widget->d_func()->glcx->device()->width(),
-                     widget->d_func()->glcx->device()->height());
-    } else if (buffer) {
-        return buffer->size();
-    } else if (fbo) {
-        return fbo->size();
-    } else if (wsurf) {
-#ifdef Q_WS_QWS
-        return wsurf->window()->frameSize();
-#else
-        return QSize(wsurf->width(), wsurf->height());
-#endif
-    }
-    return QSize();
-}
-
-inline QGLFormat QGLDrawable::format() const
-{
-    if (widget)
-        return widget->format();
-    else if (buffer)
-        return buffer->format();
-    else if (wsurf)
-        return wsurf->context()->format();
-    else if (fbo && QGLContext::currentContext()) {
-        QGLFormat fmt = QGLContext::currentContext()->format();
-        fmt.setStencil(fbo->attachment() == QGLFramebufferObject::CombinedDepthStencil);
-        fmt.setDepth(fbo->attachment() != QGLFramebufferObject::NoAttachment);
-        return fmt;
-    }
-
-    return QGLFormat();
-}
-
-inline GLuint QGLDrawable::bindTexture(const QImage &image, GLenum target, GLint format)
-{
-    if (widget)
-        return widget->d_func()->glcx->d_func()->bindTexture(image, target, format, true);
-    else if (buffer)
-        return buffer->d_func()->qctx->d_func()->bindTexture(image, target, format, true);
-    else if (fbo && QGLContext::currentContext())
-        return const_cast<QGLContext *>(QGLContext::currentContext())->d_func()->bindTexture(image, target, format, true);
-    else if (wsurf)
-        return wsurf->context()->d_func()->bindTexture(image, target, format, true);
-    return 0;
-}
-
-inline GLuint QGLDrawable::bindTexture(const QPixmap &pixmap, GLenum target, GLint format)
-{
-    if (widget)
-        return widget->d_func()->glcx->d_func()->bindTexture(pixmap, target, format, true);
-    else if (buffer)
-        return buffer->d_func()->qctx->d_func()->bindTexture(pixmap, target, format, true);
-    else if (fbo && QGLContext::currentContext())
-        return const_cast<QGLContext *>(QGLContext::currentContext())->d_func()->bindTexture(pixmap, target, format, true);
-    else if (wsurf)
-        return wsurf->context()->d_func()->bindTexture(pixmap, target, format, true);
-    return 0;
-}
-
-inline QColor QGLDrawable::backgroundColor() const
-{
-    if (widget)
-        return widget->palette().brush(widget->backgroundRole()).color();
-    return QApplication::palette().brush(QPalette::Background).color();
-}
-
-inline QGLContext *QGLDrawable::context() const
-{
-    if (widget)
-        return widget->d_func()->glcx;
-    else if (buffer)
-        return buffer->d_func()->qctx;
-    else if (fbo)
-        return const_cast<QGLContext *>(QGLContext::currentContext());
-    else if (wsurf)
-        return wsurf->context();
-    return 0;
-}
-
-inline bool QGLDrawable::autoFillBackground() const
-{
-    if (widget)
-        return widget->autoFillBackground();
-    else
-        return false;
-}
-
 
 class QOpenGLImmediateModeTessellator;
 class QGLMaskGenerator;
@@ -1536,9 +1330,15 @@ bool QOpenGLPaintEngine::begin(QPaintDevice *pdev)
 
     d->offscreen.begin();
 
-    const QColor &c = d->drawable.backgroundColor();
-    glClearColor(c.redF(), c.greenF(), c.blueF(), 1.0);
     if (d->drawable.context()->d_func()->clear_on_painter_begin && d->drawable.autoFillBackground()) {
+
+        if (d->drawable.hasTransparentBackground())
+            glClearColor(0.0, 0.0, 0.0, 0.0);
+        else {
+            const QColor &c = d->drawable.backgroundColor();
+            glClearColor(c.redF(), c.greenF(), c.blueF(), 1.0);
+        }
+
         GLbitfield clearBits = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT;
 #ifndef QT_OPENGL_ES
         clearBits |= GL_ACCUM_BUFFER_BIT;
@@ -1924,15 +1724,15 @@ static void drawTrapezoid(const QGLTrapezoid &trap, const qreal offscreenHeight,
     qreal leftB = trap.bottomLeftX + (trap.topLeftX - trap.bottomLeftX) * reciprocal;
     qreal rightB = trap.bottomRightX + (trap.topRightX - trap.bottomRightX) * reciprocal;
 
-    const bool topZero = qFuzzyCompare(topDist + 1, 1);
+    const bool topZero = qFuzzyIsNull(topDist);
 
     reciprocal = topZero ? 1.0 / bottomDist : 1.0 / topDist;
 
     qreal leftA = topZero ? (trap.bottomLeftX - leftB) * reciprocal : (trap.topLeftX - leftB) * reciprocal;
     qreal rightA = topZero ? (trap.bottomRightX - rightB) * reciprocal : (trap.topRightX - rightB) * reciprocal;
 
-    qreal invLeftA = qFuzzyCompare(leftA + 1, 1) ? 0.0 : 1.0 / leftA;
-    qreal invRightA = qFuzzyCompare(rightA + 1, 1) ? 0.0 : 1.0 / rightA;
+    qreal invLeftA = qFuzzyIsNull(leftA) ? 0.0 : 1.0 / leftA;
+    qreal invRightA = qFuzzyIsNull(rightA) ? 0.0 : 1.0 / rightA;
 
     // fragment program needs the negative of invRightA as it mirrors the line
     glTexCoord4f(topDist, bottomDist, invLeftA, -invRightA);
@@ -2233,7 +2033,7 @@ void QOpenGLPaintEnginePrivate::fillVertexArray(Qt::FillRule fillRule)
 
     // Enable color writes.
     glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
-    glStencilMask(0);
+    glStencilMask(stencilMask);
 
     setGradientOps(cbrush, QRectF(QPointF(min_x, min_y), QSizeF(max_x - min_x, max_y - min_y)));
 
@@ -2245,12 +2045,14 @@ void QOpenGLPaintEnginePrivate::fillVertexArray(Qt::FillRule fillRule)
 
         // Enable stencil func.
         glStencilFunc(GL_NOTEQUAL, 0, stencilMask);
+        glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
         composite(rect);
     } else {
         DEBUG_ONCE qDebug() << "QOpenGLPaintEnginePrivate: Drawing polygon using stencil method (no fragment programs)";
 
         // Enable stencil func.
         glStencilFunc(GL_NOTEQUAL, 0, stencilMask);
+        glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
 #ifndef QT_OPENGL_ES
         glBegin(GL_QUADS);
         glVertex2f(min_x, min_y);
@@ -2261,24 +2063,6 @@ void QOpenGLPaintEnginePrivate::fillVertexArray(Qt::FillRule fillRule)
 #endif
     }
 
-    glStencilMask(~0);
-    glStencilFunc(GL_ALWAYS, 0, 0);
-    glStencilOp(GL_ZERO, GL_ZERO, GL_ZERO);
-
-    // clear all stencil values to 0
-    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
-
-#ifndef QT_OPENGL_ES
-    glBegin(GL_QUADS);
-    glVertex2f(min_x, min_y);
-    glVertex2f(max_x, min_y);
-    glVertex2f(max_x, max_y);
-    glVertex2f(min_x, max_y);
-    glEnd();
-#endif
-
-    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
-
     // Disable stencil writes.
     glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
     glStencilMask(0);
@@ -2460,11 +2244,12 @@ void QOpenGLPaintEnginePrivate::updateDepthClip()
         return;
     }
 
-#ifndef QT_OPENGL_ES
-    glClearDepth(0.0f);
-#else
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2) || defined(QT_OPENGL_ES_1_CL)
     glClearDepthf(0.0f);
+#else
+    glClearDepth(0.0f);
 #endif
+
     glEnable(GL_DEPTH_TEST);
     glDepthMask(GL_TRUE);
     glClear(GL_DEPTH_BUFFER_BIT);
@@ -3300,6 +3085,9 @@ QGLTrapezoidMaskGenerator::QGLTrapezoidMaskGenerator(const QPainterPath &path, c
 {
 }
 
+extern void qt_add_rect_to_array(const QRectF &r, q_vertexType *array);
+extern void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, q_vertexType *array);
+
 void QGLTrapezoidMaskGenerator::drawMask(const QRect &rect)
 {
 #ifdef QT_OPENGL_ES
@@ -3445,8 +3233,7 @@ QVector<QGLTrapezoid> QGLRectMaskGenerator::generateTrapezoids()
         // manhattan distance (no rotation)
         qreal width = qAbs(delta.x()) + qAbs(delta.y());
 
-        Q_ASSERT(qFuzzyCompare(delta.x() + 1, static_cast<qreal>(1))
-                 || qFuzzyCompare(delta.y() + 1, static_cast<qreal>(1)));
+        Q_ASSERT(qFuzzyIsNull(delta.x()) || qFuzzyIsNull(delta.y()));
 
         tessellator.tessellateRect(first, last, width);
     } else {
@@ -5783,9 +5570,11 @@ void QOpenGLPaintEnginePrivate::ensureDrawableTexture()
 
 QPixmapFilter *QOpenGLPaintEngine::createPixmapFilter(int type) const
 {
+#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
     if (QGLContext::currentContext())
         return QGLContext::currentContext()->d_func()->createPixmapFilter(type);
     else
+#endif
         return 0;
 }
 
diff --git a/src/opengl/qpixmapdata_gl.cpp b/src/opengl/qpixmapdata_gl.cpp
index 5d668cd..48feb82 100644
--- a/src/opengl/qpixmapdata_gl.cpp
+++ b/src/opengl/qpixmapdata_gl.cpp
@@ -40,6 +40,7 @@
 ****************************************************************************/
 
 #include "qpixmap.h"
+#include "qglframebufferobject.h"
 
 #include <private/qpaintengine_raster_p.h>
 
@@ -48,6 +49,8 @@
 #include <private/qgl_p.h>
 #include <private/qdrawhelper_p.h>
 
+#include <private/qpaintengineex_opengl2_p.h>
+
 QT_BEGIN_NAMESPACE
 
 extern QGLWidget* qt_gl_share_widget();
@@ -57,12 +60,14 @@ class QGLShareContextScope
 public:
     QGLShareContextScope(const QGLContext *ctx)
         : m_oldContext(0)
-        , m_ctx(const_cast<QGLContext *>(ctx))
     {
-        const QGLContext *currentContext = QGLContext::currentContext();
+        QGLContext *currentContext = const_cast<QGLContext *>(QGLContext::currentContext());
         if (currentContext != ctx && !qgl_share_reg()->checkSharing(ctx, currentContext)) {
-            m_oldContext = const_cast<QGLContext *>(currentContext);
+            m_oldContext = currentContext;
+            m_ctx = const_cast<QGLContext *>(ctx);
             m_ctx->makeCurrent();
+        } else {
+            m_ctx = currentContext;
         }
     }
 
@@ -87,58 +92,30 @@ private:
     QGLContext *m_ctx;
 };
 
-void qt_gl_convertFromGLImage(QImage *img)
-{
-    const int w = img->width();
-    const int h = img->height();
-
-    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
-        uint *p = (uint*)img->bits();
-        uint *end = p + w*h;
-
-        while (p < end) {
-            uint a = *p << 24;
-            *p = (*p >> 8) | a;
-            p++;
-        }
-
-        *img = img->mirrored();
-    } else {
-        // mirror image
-        uint *data = (uint *)img->bits();
-
-        const int mid = h/2;
-
-        for (int y = 0; y < mid; ++y) {
-            uint *p = data + y * w;
-            uint *end = p + w;
-            uint *q = data + (h - y - 1) * w;
-
-            while (p < end)
-                qSwap(*p++, *q++);
-        }
-    }
-}
-
-
 static int qt_gl_pixmap_serial = 0;
 
 QGLPixmapData::QGLPixmapData(PixelType type)
     : QPixmapData(type, OpenGLClass)
     , m_width(0)
     , m_height(0)
-    , m_texture(0)
+    , m_renderFbo(0)
+    , m_textureId(0)
+    , m_engine(0)
+    , m_ctx(0)
     , m_dirty(false)
+    , m_hasFillColor(false)
+    , m_hasAlpha(false)
 {
     setSerialNumber(++qt_gl_pixmap_serial);
 }
 
 QGLPixmapData::~QGLPixmapData()
 {
-    if (m_texture && qt_gl_share_widget()) {
-        QGLShareContextScope ctx(qt_gl_share_widget()->context());
-        glDeleteTextures(1, &m_texture);
-    }
+    QGLWidget *shareWidget = qt_gl_share_widget();
+    if (!shareWidget)
+        return;
+    QGLShareContextScope ctx(shareWidget->context());
+    glDeleteTextures(1, &m_textureId);
 }
 
 bool QGLPixmapData::isValid() const
@@ -148,6 +125,9 @@ bool QGLPixmapData::isValid() const
 
 bool QGLPixmapData::isValidContext(const QGLContext *ctx) const
 {
+    if (ctx == m_ctx)
+        return true;
+
     const QGLContext *share_ctx = qt_gl_share_widget()->context();
     return ctx == share_ctx || qgl_share_reg()->checkSharing(ctx, share_ctx);
 }
@@ -157,9 +137,20 @@ void QGLPixmapData::resize(int width, int height)
     if (width == m_width && height == m_height)
         return;
 
+    if (width <= 0 || height <= 0) {
+        width = 0;
+        height = 0;
+    }
+
     m_width = width;
     m_height = height;
 
+    if (m_textureId) {
+        QGLShareContextScope ctx(qt_gl_share_widget()->context());
+        glDeleteTextures(1, &m_textureId);
+        m_textureId = 0;
+    }
+
     m_source = QImage();
     m_dirty = isValid();
     setSerialNumber(++qt_gl_pixmap_serial);
@@ -173,36 +164,82 @@ void QGLPixmapData::ensureCreated() const
     m_dirty = false;
 
     QGLShareContextScope ctx(qt_gl_share_widget()->context());
+    m_ctx = ctx;
 
     const GLenum format = qt_gl_preferredTextureFormat();
-    const GLenum target = qt_gl_preferredTextureTarget();
-
-    if (!m_texture)
-        glGenTextures(1, &m_texture);
-
-    glBindTexture(target, m_texture);
+    const GLenum target = GL_TEXTURE_2D;
+
+    if (!m_textureId) {
+        glGenTextures(1, &m_textureId);
+        glBindTexture(target, m_textureId);
+        GLenum format = m_hasAlpha ? GL_RGBA : GL_RGB;
+        glTexImage2D(target, 0, format, m_width, m_height, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, 0);
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    }
 
-    if (m_source.isNull()) {
-        glTexImage2D(target, 0, GL_RGBA, m_width, m_height, 0, format, GL_UNSIGNED_BYTE, 0);
-    } else {
+    if (!m_source.isNull()) {
         const QImage tx = ctx->d_func()->convertToGLFormat(m_source, true, format);
 
-        glBindTexture(target, m_texture);
-        glTexImage2D(target, 0, GL_RGBA, m_width, m_height, 0, format,
-                GL_UNSIGNED_BYTE, tx.bits());
+        glBindTexture(target, m_textureId);
+        glTexSubImage2D(target, 0, 0, 0, m_width, m_height, format,
+                        GL_UNSIGNED_BYTE, tx.bits());
 
-        m_source = QImage();
+        if (useFramebufferObjects())
+            m_source = QImage();
     }
 }
 
+QGLFramebufferObject *QGLPixmapData::fbo() const
+{
+    return m_renderFbo;
+}
+
 void QGLPixmapData::fromImage(const QImage &image,
                               Qt::ImageConversionFlags)
 {
     if (image.size() == QSize(m_width, m_height))
         setSerialNumber(++qt_gl_pixmap_serial);
     resize(image.width(), image.height());
-    m_source = image;
+
+    if (pixelType() == BitmapType) {
+        m_source = image.convertToFormat(QImage::Format_MonoLSB);
+    } else {
+        m_source = image.hasAlphaChannel()
+            ? image.convertToFormat(QImage::Format_ARGB32_Premultiplied)
+            : image.convertToFormat(QImage::Format_RGB32);
+    }
+
     m_dirty = true;
+    m_hasFillColor = false;
+
+    m_hasAlpha = image.hasAlphaChannel();
+
+    if (m_textureId) {
+        QGLShareContextScope ctx(qt_gl_share_widget()->context());
+        glDeleteTextures(1, &m_textureId);
+        m_textureId = 0;
+    }
+}
+
+bool QGLPixmapData::scroll(int dx, int dy, const QRect &rect)
+{
+    Q_UNUSED(dx);
+    Q_UNUSED(dy);
+    Q_UNUSED(rect);
+    return false;
+}
+
+void QGLPixmapData::copy(const QPixmapData *data, const QRect &rect)
+{
+    if (data->classId() != QPixmapData::OpenGLClass) {
+        QPixmapData::copy(data, rect);
+        return;
+    }
+
+    // can be optimized to do a framebuffer blit or similar ...
+    QPixmapData::copy(data, rect);
 }
 
 void QGLPixmapData::fill(const QColor &color)
@@ -210,20 +247,46 @@ void QGLPixmapData::fill(const QColor &color)
     if (!isValid())
         return;
 
-    if (!m_source.isNull()) {
-        m_source.fill(PREMUL(color.rgba()));
-    } else {
-        // ## TODO: improve performance here
-        QImage img(m_width, m_height, QImage::Format_ARGB32_Premultiplied);
-        img.fill(PREMUL(color.rgba()));
+    if (!m_textureId)
+        m_hasAlpha = color.alpha() != 255;
 
-        fromImage(img, 0);
+    if (useFramebufferObjects()) {
+        m_source = QImage();
+        m_hasFillColor = true;
+        m_fillColor = color;
+    } else {
+        QImage image = fillImage(color);
+        fromImage(image, 0);
     }
 }
 
 bool QGLPixmapData::hasAlphaChannel() const
 {
-    return true;
+    return m_hasAlpha;
+}
+
+QImage QGLPixmapData::fillImage(const QColor &color) const
+{
+    QImage img;
+    if (pixelType() == BitmapType) {
+        img = QImage(m_width, m_height, QImage::Format_MonoLSB);
+        img.setNumColors(2);
+        img.setColor(0, QColor(Qt::color0).rgba());
+        img.setColor(1, QColor(Qt::color1).rgba());
+
+        int gray = qGray(color.rgba());
+        if (qAbs(255 - gray) < gray)
+            img.fill(0);
+        else
+            img.fill(1);
+    } else {
+        img = QImage(m_width, m_height,
+                m_hasAlpha
+                ? QImage::Format_ARGB32_Premultiplied
+                : QImage::Format_RGB32);
+        img.fill(PREMUL(color.rgba()));
+    }
+    return img;
 }
 
 QImage QGLPixmapData::toImage() const
@@ -231,29 +294,111 @@ QImage QGLPixmapData::toImage() const
     if (!isValid())
         return QImage();
 
-    if (!m_source.isNull())
+    if (m_renderFbo) {
+        copyBackFromRenderFbo(true);
+    } else if (!m_source.isNull()) {
         return m_source;
-    else if (m_dirty)
-        return QImage(m_width, m_height, QImage::Format_ARGB32_Premultiplied);
+    } else if (m_dirty || m_hasFillColor) {
+        return fillImage(m_fillColor);
+    } else {
+        ensureCreated();
+    }
+
+    QGLShareContextScope ctx(qt_gl_share_widget()->context());
+    extern QImage qt_gl_read_texture(const QSize &size, bool alpha_format, bool include_alpha);
+    glBindTexture(GL_TEXTURE_2D, m_textureId);
+    return qt_gl_read_texture(QSize(m_width, m_height), true, true);
+}
+
+struct TextureBuffer
+{
+    QGLFramebufferObject *fbo;
+    QGL2PaintEngineEx *engine;
+};
+
+static QVector<TextureBuffer> textureBufferStack;
+static int currentTextureBuffer = 0;
+
+void QGLPixmapData::copyBackFromRenderFbo(bool keepCurrentFboBound) const
+{
+    if (!isValid())
+        return;
+
+    m_hasFillColor = false;
+
+    const QGLContext *share_ctx = qt_gl_share_widget()->context();
+    QGLShareContextScope ctx(share_ctx);
 
     ensureCreated();
 
-    QGLShareContextScope ctx(qt_gl_share_widget()->context());
-    QImage img(m_width, m_height, QImage::Format_ARGB32_Premultiplied);
+    if (!ctx->d_ptr->fbo)
+        glGenFramebuffers(1, &ctx->d_ptr->fbo);
 
-    GLenum format = qt_gl_preferredTextureFormat();
-    GLenum target = qt_gl_preferredTextureTarget();
+    glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->fbo);
+    glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+        GL_TEXTURE_2D, m_textureId, 0);
 
-    glBindTexture(target, m_texture);
-#ifndef QT_OPENGL_ES
-    glGetTexImage(target, 0, format, GL_UNSIGNED_BYTE, img.bits());
-#else
-    // XXX - cannot download textures this way on OpenGL/ES.
-#endif
+    const int x0 = 0;
+    const int x1 = m_width;
+    const int y0 = 0;
+    const int y1 = m_height;
 
-    qt_gl_convertFromGLImage(&img);
+    glBindFramebuffer(GL_READ_FRAMEBUFFER_EXT, m_renderFbo->handle());
 
-    return img;
+    glDisable(GL_SCISSOR_TEST);
+
+    glBlitFramebufferEXT(x0, y0, x1, y1,
+            x0, y0, x1, y1,
+            GL_COLOR_BUFFER_BIT,
+            GL_NEAREST);
+
+    if (keepCurrentFboBound)
+        glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+}
+
+void QGLPixmapData::swapBuffers()
+{
+    if (!isValid())
+        return;
+
+    copyBackFromRenderFbo(false);
+    m_renderFbo->release();
+
+    --currentTextureBuffer;
+
+    m_renderFbo = 0;
+    m_engine = 0;
+}
+
+void QGLPixmapData::makeCurrent()
+{
+    if (isValid() && m_renderFbo)
+        m_renderFbo->bind();
+}
+
+void QGLPixmapData::doneCurrent()
+{
+    if (isValid() && m_renderFbo)
+        m_renderFbo->release();
+}
+
+static TextureBuffer createTextureBuffer(const QSize &size, QGL2PaintEngineEx *engine = 0)
+{
+    TextureBuffer buffer;
+    QGLFramebufferObjectFormat fmt;
+    fmt.setAttachment(QGLFramebufferObject::CombinedDepthStencil);
+    fmt.setSamples(4);
+
+    buffer.fbo = new QGLFramebufferObject(size, fmt);
+    buffer.engine = engine ? engine : new QGL2PaintEngineEx;
+
+    return buffer;
+}
+
+bool QGLPixmapData::useFramebufferObjects()
+{
+    return QGLFramebufferObject::hasOpenGLFramebufferObjects()
+           && QGLFramebufferObject::hasOpenGLFramebufferBlit();
 }
 
 QPaintEngine* QGLPixmapData::paintEngine() const
@@ -261,23 +406,82 @@ QPaintEngine* QGLPixmapData::paintEngine() const
     if (!isValid())
         return 0;
 
-    m_source = toImage();
-    m_dirty = true;
+    if (m_engine)
+        return m_engine;
+
+    if (useFramebufferObjects()) {
+        extern QGLWidget* qt_gl_share_widget();
+
+        if (!QGLContext::currentContext())
+            qt_gl_share_widget()->makeCurrent();
+        QGLShareContextScope ctx(qt_gl_share_widget()->context());
+
+        if (textureBufferStack.size() <= currentTextureBuffer) {
+            textureBufferStack << createTextureBuffer(size());
+        } else {
+            QSize sz = textureBufferStack.at(currentTextureBuffer).fbo->size();
+            if (sz.width() < m_width || sz.height() < m_height) {
+                if (sz.width() < m_width)
+                    sz.setWidth(qMax(m_width, qRound(sz.width() * 1.5)));
+                if (sz.height() < m_height)
+                    sz.setHeight(qMax(m_height, qRound(sz.height() * 1.5)));
+
+                // wasting too much space?
+                if (sz.width() * sz.height() > m_width * m_height * 2.5)
+                    sz = QSize(m_width, m_height);
+
+                delete textureBufferStack.at(currentTextureBuffer).fbo;
+                textureBufferStack[currentTextureBuffer] =
+                    createTextureBuffer(sz, textureBufferStack.at(currentTextureBuffer).engine);
+                qDebug() << "Creating new pixmap texture buffer:" << sz;
+            }
+        }
 
+        if (textureBufferStack.at(currentTextureBuffer).fbo->isValid()) {
+            m_renderFbo = textureBufferStack.at(currentTextureBuffer).fbo;
+            m_engine = textureBufferStack.at(currentTextureBuffer).engine;
+
+            ++currentTextureBuffer;
+
+            return m_engine;
+        }
+
+        qWarning() << "Failed to create pixmap texture buffer of size " << size() << ", falling back to raster paint engine";
+    }
+
+    m_dirty = true;
+    if (m_source.size() != size())
+        m_source = QImage(size(), QImage::Format_ARGB32_Premultiplied);
+    if (m_hasFillColor) {
+        m_source.fill(PREMUL(m_fillColor.rgba()));
+        m_hasFillColor = false;
+    }
     return m_source.paintEngine();
 }
 
-GLuint QGLPixmapData::bind() const
+GLuint QGLPixmapData::bind(bool copyBack) const
 {
-    ensureCreated();
-    glBindTexture(qt_gl_preferredTextureTarget(), m_texture);
-    return m_texture;
+    if (m_renderFbo && copyBack) {
+        copyBackFromRenderFbo(true);
+    } else {
+        if (m_hasFillColor) {
+            m_dirty = true;
+            m_source = QImage(m_width, m_height, QImage::Format_ARGB32_Premultiplied);
+            m_source.fill(PREMUL(m_fillColor.rgba()));
+            m_hasFillColor = false;
+        }
+        ensureCreated();
+    }
+
+    GLuint id = m_textureId;
+    glBindTexture(GL_TEXTURE_2D, id);
+    return id;
 }
 
 GLuint QGLPixmapData::textureId() const
 {
     ensureCreated();
-    return m_texture;
+    return m_textureId;
 }
 
 extern int qt_defaultDpiX();
@@ -285,6 +489,9 @@ extern int qt_defaultDpiY();
 
 int QGLPixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const
 {
+    if (m_width == 0)
+        return 0;
+
     switch (metric) {
     case QPaintDevice::PdmWidth:
         return m_width;
diff --git a/src/opengl/qpixmapdata_gl_p.h b/src/opengl/qpixmapdata_gl_p.h
index 63703fd..af10f2c 100644
--- a/src/opengl/qpixmapdata_gl_p.h
+++ b/src/opengl/qpixmapdata_gl_p.h
@@ -60,6 +60,7 @@
 QT_BEGIN_NAMESPACE
 
 class QPaintEngine;
+class QGLFramebufferObject;
 
 class QGLPixmapData : public QPixmapData
 {
@@ -72,19 +73,37 @@ public:
     void resize(int width, int height);
     void fromImage(const QImage &image,
                    Qt::ImageConversionFlags flags);
+    void copy(const QPixmapData *data, const QRect &rect);
+
+    bool scroll(int dx, int dy, const QRect &rect);
 
     void fill(const QColor &color);
     bool hasAlphaChannel() const;
     QImage toImage() const;
     QPaintEngine* paintEngine() const;
 
-    GLuint bind() const;
+    GLuint bind(bool copyBack = true) const;
     GLuint textureId() const;
 
     bool isValidContext(const QGLContext *ctx) const;
 
     void ensureCreated() const;
 
+    bool isUninitialized() const { return m_dirty && m_source.isNull(); }
+
+    bool needsFill() const { return m_hasFillColor; }
+    QColor fillColor() const { return m_fillColor; }
+
+    QSize size() const { return QSize(m_width, m_height); }
+    int width() const { return m_width; }
+    int height() const { return m_height; }
+
+    QGLFramebufferObject *fbo() const;
+
+    void makeCurrent();
+    void doneCurrent();
+    void swapBuffers();
+
 protected:
     int metric(QPaintDevice::PaintDeviceMetric metric) const;
 
@@ -92,12 +111,30 @@ private:
     QGLPixmapData(const QGLPixmapData &other);
     QGLPixmapData &operator=(const QGLPixmapData &other);
 
+    void copyBackFromRenderFbo(bool keepCurrentFboBound) const;
+
+    static bool useFramebufferObjects();
+
+    QImage fillImage(const QColor &color) const;
+
     int m_width;
     int m_height;
 
-    mutable GLuint m_texture;
-    mutable bool m_dirty;
+    mutable QGLFramebufferObject *m_renderFbo;
+    mutable GLuint m_textureId;
+    mutable QPaintEngine *m_engine;
+    mutable QGLContext *m_ctx;
     mutable QImage m_source;
+
+    // the texture is not in sync with the source image
+    mutable bool m_dirty;
+
+    // fill has been called and no painting has been done, so the pixmap is
+    // represented by a single fill color
+    mutable QColor m_fillColor;
+    mutable bool m_hasFillColor;
+
+    mutable bool m_hasAlpha;
 };
 
 QT_END_NAMESPACE
diff --git a/src/opengl/qwindowsurface_gl.cpp b/src/opengl/qwindowsurface_gl.cpp
index b41adf9..01974a2 100644
--- a/src/opengl/qwindowsurface_gl.cpp
+++ b/src/opengl/qwindowsurface_gl.cpp
@@ -69,7 +69,8 @@
 
 #include <private/qglpixelbuffer_p.h>
 #include <private/qgraphicssystem_gl_p.h>
-#include <private/qpaintengine_opengl_p.h>
+
+#include <private/qpaintengineex_opengl2_p.h>
 
 #ifndef GLX_ARB_multisample
 #define GLX_SAMPLE_BUFFERS_ARB  100000
@@ -100,17 +101,19 @@ QGLGraphicsSystem::QGLGraphicsSystem()
         int i = 0;
         int spec[16];
         spec[i++] = GLX_RGBA;
-#if 0
         spec[i++] = GLX_DOUBLEBUFFER;
-        spec[i++] = GLX_DEPTH_SIZE;
-        spec[i++] = 8;
-        spec[i++] = GLX_STENCIL_SIZE;
-        spec[i++] = 8;
-        spec[i++] = GLX_SAMPLE_BUFFERS_ARB;
-        spec[i++] = 1;
-        spec[i++] = GLX_SAMPLES_ARB;
-        spec[i++] = 4;
-#endif
+
+        if (!qgetenv("QT_GL_SWAPBUFFER_PRESERVE").isNull()) {
+            spec[i++] = GLX_DEPTH_SIZE;
+            spec[i++] = 8;
+            spec[i++] = GLX_STENCIL_SIZE;
+            spec[i++] = 8;
+            spec[i++] = GLX_SAMPLE_BUFFERS_ARB;
+            spec[i++] = 1;
+            spec[i++] = GLX_SAMPLES_ARB;
+            spec[i++] = 4;
+        }
+
         spec[i++] = XNone;
 
         XVisualInfo *vi = glXChooseVisual(X11->display, X11->defaultScreen, spec);
@@ -187,9 +190,10 @@ public:
     }
 
     void cleanup() {
-        delete widget;
-        widget = 0;
+        QGLWidget *w = widget;
         cleanedUp = true;
+        widget = 0;
+        delete w;
     }
 
     static bool cleanedUp;
@@ -227,6 +231,7 @@ struct QGLWindowSurfacePrivate
 
     int tried_fbo : 1;
     int tried_pb : 1;
+    int destructive_swap_buffers : 1;
 
     QGLContext *ctx;
 
@@ -250,6 +255,7 @@ QGLWindowSurface::QGLWindowSurface(QWidget *window)
     d_ptr->ctx = 0;
     d_ptr->tried_fbo = false;
     d_ptr->tried_pb = false;
+    d_ptr->destructive_swap_buffers = qgetenv("QT_GL_SWAPBUFFER_PRESERVE").isNull();
 }
 
 QGLWindowSurface::~QGLWindowSurface()
@@ -266,6 +272,24 @@ QGLWindowSurface::~QGLWindowSurface()
     delete d_ptr;
 }
 
+void QGLWindowSurface::deleted(QObject *object)
+{
+    QWidget *widget = qobject_cast<QWidget *>(object);
+    if (widget) {
+        QWidgetPrivate *widgetPrivate = widget->d_func();
+        if (widgetPrivate->extraData()) {
+            union { QGLContext **ctxPtr; void **voidPtr; };
+            voidPtr = &widgetPrivate->extraData()->glContext;
+            int index = d_ptr->contexts.indexOf(ctxPtr);
+            if (index != -1) {
+                delete *ctxPtr;
+                *ctxPtr = 0;
+                d_ptr->contexts.removeAt(index);
+            }
+        }
+    }
+}
+
 void QGLWindowSurface::hijackWindow(QWidget *widget)
 {
     QWidgetPrivate *widgetPrivate = widget->d_func();
@@ -282,23 +306,19 @@ void QGLWindowSurface::hijackWindow(QWidget *widget)
 
     union { QGLContext **ctxPtr; void **voidPtr; };
 
+    connect(widget, SIGNAL(destroyed(QObject *)), this, SLOT(deleted(QObject *)));
+
     voidPtr = &widgetPrivate->extraData()->glContext;
     d_ptr->contexts << ctxPtr;
     qDebug() << "hijackWindow() context created for" << widget << d_ptr->contexts.size();
 }
 
-#if !defined(QT_OPENGL_ES_2)
-Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_gl_window_surface_paintengine)
-#endif
+Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_gl_window_surface_2_engine)
 
 /*! \reimp */
 QPaintEngine *QGLWindowSurface::paintEngine() const
 {
-#if !defined(QT_OPENGL_ES_2)
-    return qt_gl_window_surface_paintengine();
-#else
-    return 0;
-#endif
+    return qt_gl_window_surface_2_engine();
 }
 
 int QGLWindowSurface::metric(PaintDeviceMetric m) const
@@ -313,6 +333,8 @@ QGLContext *QGLWindowSurface::context() const
 
 QPaintDevice *QGLWindowSurface::paintDevice()
 {
+    updateGeometry();
+
     if (d_ptr->pb)
         return d_ptr->pb;
 
@@ -328,6 +350,7 @@ static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize,
 
 void QGLWindowSurface::beginPaint(const QRegion &)
 {
+    updateGeometry();
 }
 
 void QGLWindowSurface::endPaint(const QRegion &rgn)
@@ -343,6 +366,9 @@ void QGLWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &
     QWidget *parent = widget->internalWinId() ? widget : widget->nativeParentWidget();
     Q_ASSERT(parent);
 
+    if (!geometry().isValid())
+        return;
+
     hijackWindow(parent);
 
     QRect br = rgn.boundingRect().translated(offset);
@@ -350,53 +376,57 @@ void QGLWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &
     QPoint wOffset = qt_qwidget_data(parent)->wrect.topLeft();
     QRect rect = br.translated(-offset - wOffset);
 
-    const GLenum target = qt_gl_preferredTextureTarget();
+    const GLenum target = GL_TEXTURE_2D;
 
     if (context()) {
         context()->makeCurrent();
 
         if (context()->format().doubleBuffer()) {
-            glBindTexture(target, d_ptr->tex_id);
+#if !defined(QT_OPENGL_ES_2)
+            if (d_ptr->destructive_swap_buffers) {
+                glBindTexture(target, d_ptr->tex_id);
 
-            QVector<QRect> rects = d_ptr->paintedRegion.rects();
-            for (int i = 0; i < rects.size(); ++i) {
-                QRect br = rects.at(i);
-                if (br.isEmpty())
-                    continue;
+                QVector<QRect> rects = d_ptr->paintedRegion.rects();
+                for (int i = 0; i < rects.size(); ++i) {
+                    QRect br = rects.at(i);
+                    if (br.isEmpty())
+                        continue;
 
-                const uint bottom = window()->height() - (br.y() + br.height());
-                glCopyTexSubImage2D(target, 0, br.x(), bottom, br.x(), bottom, br.width(), br.height());
-            }
+                    const uint bottom = window()->height() - (br.y() + br.height());
+                    glCopyTexSubImage2D(target, 0, br.x(), bottom, br.x(), bottom, br.width(), br.height());
+                }
 
-            glBindTexture(target, 0);
+                glBindTexture(target, 0);
 
-            QRegion dirtyRegion = QRegion(window()->rect()) - d_ptr->paintedRegion;
+                QRegion dirtyRegion = QRegion(window()->rect()) - d_ptr->paintedRegion;
 
-            if (!dirtyRegion.isEmpty()) {
-                context()->makeCurrent();
+                if (!dirtyRegion.isEmpty()) {
+                    context()->makeCurrent();
 
-                glMatrixMode(GL_MODELVIEW);
-                glLoadIdentity();
+                    glMatrixMode(GL_MODELVIEW);
+                    glLoadIdentity();
 
-                glMatrixMode(GL_PROJECTION);
-                glLoadIdentity();
+                    glMatrixMode(GL_PROJECTION);
+                    glLoadIdentity();
 #ifndef QT_OPENGL_ES
-                glOrtho(0, window()->width(), window()->height(), 0, -999999, 999999);
+                    glOrtho(0, window()->width(), window()->height(), 0, -999999, 999999);
 #else
-                glOrthof(0, window()->width(), window()->height(), 0, -999999, 999999);
+                    glOrthof(0, window()->width(), window()->height(), 0, -999999, 999999);
 #endif
-                glViewport(0, 0, window()->width(), window()->height());
+                    glViewport(0, 0, window()->width(), window()->height());
 
-                QVector<QRect> rects = dirtyRegion.rects();
-                glColor4f(1, 1, 1, 1);
-                for (int i = 0; i < rects.size(); ++i) {
-                    QRect rect = rects.at(i);
-                    if (rect.isEmpty())
-                        continue;
+                    QVector<QRect> rects = dirtyRegion.rects();
+                    glColor4f(1, 1, 1, 1);
+                    for (int i = 0; i < rects.size(); ++i) {
+                        QRect rect = rects.at(i);
+                        if (rect.isEmpty())
+                            continue;
 
-                    drawTexture(rect, d_ptr->tex_id, window()->size(), rect);
+                        drawTexture(rect, d_ptr->tex_id, window()->size(), rect);
+                    }
                 }
             }
+#endif
             d_ptr->paintedRegion = QRegion();
 
             context()->swapBuffers();
@@ -421,48 +451,75 @@ void QGLWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &
     }
 
     QSize size = widget->rect().size();
-    if (ctx->format().doubleBuffer()) {
+    if (d_ptr->destructive_swap_buffers && ctx->format().doubleBuffer()) {
         rect = parent->rect();
         br = rect.translated(wOffset);
         size = parent->size();
     }
 
-    ctx->makeCurrent();
+    glDisable(GL_SCISSOR_TEST);
+
+    if (d_ptr->fbo && QGLExtensions::glExtensions & QGLExtensions::FramebufferBlit) {
+        const int h = d_ptr->fbo->height();
+
+        const int x0 = rect.left();
+        const int x1 = rect.left() + rect.width();
+        const int y0 = h - (rect.top() + rect.height());
+        const int y1 = h - rect.top();
+
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, 0);
+
+        glBlitFramebufferEXT(x0, y0, x1, y1,
+                x0, y0, x1, y1,
+                GL_COLOR_BUFFER_BIT,
+                GL_NEAREST);
+
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, d_ptr->fbo->handle());
+    }
+#if !defined(QT_OPENGL_ES_2)
+    else {
+        glDisable(GL_DEPTH_TEST);
+
+        if (d_ptr->fbo) {
+            d_ptr->fbo->release();
+        } else {
+            ctx->makeCurrent();
 #ifdef Q_WS_MAC
-    ctx->updatePaintDevice();
+            ctx->updatePaintDevice();
 #endif
-    if (d_ptr->fbo)
-        d_ptr->fbo->release();
+        }
 
-    glMatrixMode(GL_MODELVIEW);
-    glLoadIdentity();
+        glMatrixMode(GL_MODELVIEW);
+        glLoadIdentity();
 
-    glMatrixMode(GL_PROJECTION);
-    glLoadIdentity();
+        glMatrixMode(GL_PROJECTION);
+        glLoadIdentity();
 #ifndef QT_OPENGL_ES
-    glOrtho(0, size.width(), size.height(), 0, -999999, 999999);
+        glOrtho(0, size.width(), size.height(), 0, -999999, 999999);
 #else
-    glOrthof(0, size.width(), size.height(), 0, -999999, 999999);
+        glOrthof(0, size.width(), size.height(), 0, -999999, 999999);
 #endif
-    glViewport(0, 0, size.width(), size.height());
+        glViewport(0, 0, size.width(), size.height());
 
-    glColor4f(1, 1, 1, 1);
-    drawTexture(rect, texture, window()->size(), br);
+        glColor4f(1, 1, 1, 1);
+        drawTexture(rect, texture, window()->size(), br);
+
+        if (d_ptr->fbo)
+            d_ptr->fbo->bind();
+    }
+#endif
 
     if (ctx->format().doubleBuffer())
         ctx->swapBuffers();
     else
         glFlush();
-
-    if (d_ptr->fbo)
-        d_ptr->fbo->bind();
 }
 
-void QGLWindowSurface::setGeometry(const QRect &rect)
+void QGLWindowSurface::updateGeometry()
 {
-    QWindowSurface::setGeometry(rect);
+    QRect rect = QWindowSurface::geometry();
 
-    const GLenum target = qt_gl_preferredTextureTarget();
+    const GLenum target = GL_TEXTURE_2D;
 
     if (rect.width() <= 0 || rect.height() <= 0)
         return;
@@ -473,13 +530,51 @@ void QGLWindowSurface::setGeometry(const QRect &rect)
     d_ptr->size = rect.size();
 
     if (d_ptr->ctx) {
-        glBindTexture(target, d_ptr->tex_id);
-        glTexImage2D(target, 0, GL_RGBA, rect.width(), rect.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
-        glBindTexture(target, 0);
+        if (d_ptr->destructive_swap_buffers) {
+            glBindTexture(target, d_ptr->tex_id);
+            glTexImage2D(target, 0, GL_RGBA, rect.width(), rect.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
+            glBindTexture(target, 0);
+        }
         return;
     }
 
-    if (d_ptr->pb || !d_ptr->tried_pb) {
+    if (d_ptr->destructive_swap_buffers
+        && (QGLExtensions::glExtensions & QGLExtensions::FramebufferObject)
+#ifdef QT_OPENGL_ES_2
+        && (QGLExtensions::glExtensions & QGLExtensions::FramebufferBlit)
+#endif
+        && (d_ptr->fbo || !d_ptr->tried_fbo))
+    {
+        d_ptr->tried_fbo = true;
+        hijackWindow(window());
+        QGLContext *ctx = reinterpret_cast<QGLContext *>(window()->d_func()->extraData()->glContext);
+        ctx->d_ptr->internal_context = true;
+        ctx->makeCurrent();
+        delete d_ptr->fbo;
+
+        QGLFramebufferObjectFormat format;
+        format.setAttachment(QGLFramebufferObject::CombinedDepthStencil);
+        format.setInternalFormat(GL_RGBA);
+        format.setTextureTarget(target);
+
+        if (QGLExtensions::glExtensions & QGLExtensions::FramebufferBlit)
+            format.setSamples(8);
+
+        d_ptr->fbo = new QGLFramebufferObject(rect.size(), format);
+        d_ptr->fbo->bind();
+        if (d_ptr->fbo->isValid()) {
+            qDebug() << "Created Window Surface FBO" << rect.size()
+                     << "with samples" << d_ptr->fbo->format().samples();
+            return;
+        } else {
+            qDebug() << "QGLWindowSurface: Failed to create valid FBO, falling back";
+            delete d_ptr->fbo;
+            d_ptr->fbo = 0;
+        }
+    }
+
+#if !defined(QT_OPENGL_ES_2)
+    if (d_ptr->destructive_swap_buffers && (d_ptr->pb || !d_ptr->tried_pb)) {
         d_ptr->tried_pb = true;
 
         if (d_ptr->pb) {
@@ -494,7 +589,7 @@ void QGLWindowSurface::setGeometry(const QRect &rect)
                                         qt_gl_share_widget());
 
         if (d_ptr->pb->isValid()) {
-            qDebug() << "PB Sample buffers:" << d_ptr->pb->format().sampleBuffers();
+            qDebug() << "Created Window Surface Pixelbuffer, Sample buffers:" << d_ptr->pb->format().sampleBuffers();
             d_ptr->pb->makeCurrent();
 
             glGenTextures(1, &d_ptr->pb_tex_id);
@@ -521,44 +616,32 @@ void QGLWindowSurface::setGeometry(const QRect &rect)
             d_ptr->pb = 0;
         }
     }
-
-    if ((QGLExtensions::glExtensions & QGLExtensions::FramebufferObject) && (d_ptr->fbo || !d_ptr->tried_fbo)) {
-        d_ptr->tried_fbo = true;
-        hijackWindow(window());
-        QGLContext *ctx = reinterpret_cast<QGLContext *>(window()->d_func()->extraData()->glContext);
-        ctx->d_ptr->internal_context = true;
-        ctx->makeCurrent();
-        delete d_ptr->fbo;
-        d_ptr->fbo = new QGLFramebufferObject(rect.size(), QGLFramebufferObject::CombinedDepthStencil,
-                                              GLenum(target), GLenum(GL_RGBA));
-
-        d_ptr->fbo->bind();
-        if (d_ptr->fbo->isValid()) {
-            return;
-        } else {
-            qDebug() << "QGLWindowSurface: Failed to create valid FBO, falling back";
-            delete d_ptr->fbo;
-            d_ptr->fbo = 0;
-        }
-    }
+#endif // !defined(QT_OPENGL_ES_2)
 
     hijackWindow(window());
     QGLContext *ctx = reinterpret_cast<QGLContext *>(window()->d_func()->extraData()->glContext);
     ctx->makeCurrent();
 
-    glGenTextures(1, &d_ptr->tex_id);
-    glBindTexture(target, d_ptr->tex_id);
-    glTexImage2D(target, 0, GL_RGBA, rect.width(), rect.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
+    if (d_ptr->destructive_swap_buffers) {
+        glGenTextures(1, &d_ptr->tex_id);
+        glBindTexture(target, d_ptr->tex_id);
+        glTexImage2D(target, 0, GL_RGBA, rect.width(), rect.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
 
-    glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glBindTexture(target, 0);
+        glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glBindTexture(target, 0);
+    }
 
     qDebug() << "QGLWindowSurface: Using plain widget as window surface" << this;;
     d_ptr->ctx = ctx;
     d_ptr->ctx->d_ptr->internal_context = true;
 }
 
+void QGLWindowSurface::setGeometry(const QRect &rect)
+{
+    QWindowSurface::setGeometry(rect);
+}
+
 bool QGLWindowSurface::scroll(const QRegion &area, int dx, int dy)
 {
     // this code randomly fails currently for unknown reasons
@@ -582,7 +665,7 @@ bool QGLWindowSurface::scroll(const QRegion &area, int dx, int dy)
     return true;
 #endif
 
-    const GLenum target = qt_gl_preferredTextureTarget();
+    const GLenum target = GL_TEXTURE_2D;
 
     glBindTexture(target, d_ptr->tex_id);
     glCopyTexImage2D(target, 0, GL_RGBA, br.x(), d_ptr->pb->height() - (br.y() + br.height()), br.width(), br.height(), 0);
@@ -595,7 +678,7 @@ bool QGLWindowSurface::scroll(const QRegion &area, int dx, int dy)
 
 static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize, const QRectF &br)
 {
-    const GLenum target = qt_gl_preferredTextureTarget();
+    const GLenum target = GL_TEXTURE_2D;
     QRectF src = br.isEmpty()
         ? QRectF(QPointF(), texSize)
         : QRectF(QPointF(br.x(), texSize.height() - br.bottom()), br.size());
@@ -623,6 +706,7 @@ static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize,
     extern void qt_add_rect_to_array(const QRectF &r, q_vertexType *array); // qpaintengine_opengl.cpp
     qt_add_rect_to_array(rect, vertexArray);
 
+#if !defined(QT_OPENGL_ES_2)
     glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
     glTexCoordPointer(2, q_vertexTypeEnum, 0, texCoordArray);
 
@@ -634,6 +718,7 @@ static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize,
     glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
     glDisableClientState(GL_VERTEX_ARRAY);
     glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+#endif
 
     glDisable(target);
     glBindTexture(target, 0);
diff --git a/src/opengl/qwindowsurface_gl_p.h b/src/opengl/qwindowsurface_gl_p.h
index 0194378..9efd1ae 100644
--- a/src/opengl/qwindowsurface_gl_p.h
+++ b/src/opengl/qwindowsurface_gl_p.h
@@ -65,8 +65,9 @@ class QRegion;
 class QWidget;
 struct QGLWindowSurfacePrivate;
 
-class QGLWindowSurface : public QWindowSurface, public QPaintDevice
+class QGLWindowSurface : public QObject, public QWindowSurface, public QPaintDevice
 {
+    Q_OBJECT
 public:
     QGLWindowSurface(QWidget *window);
     ~QGLWindowSurface();
@@ -74,6 +75,7 @@ public:
     QPaintDevice *paintDevice();
     void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
     void setGeometry(const QRect &rect);
+    void updateGeometry();
     bool scroll(const QRegion &area, int dx, int dy);
 
     void beginPaint(const QRegion &region);
@@ -90,6 +92,9 @@ public:
 protected:
     int metric(PaintDeviceMetric metric) const;
 
+private slots:
+    void deleted(QObject *object);
+
 private:
     void hijackWindow(QWidget *widget);
 
diff --git a/src/opengl/util/fragmentprograms_p.h b/src/opengl/util/fragmentprograms_p.h
index ecf0bf8..d4b54d4 100644
--- a/src/opengl/util/fragmentprograms_p.h
+++ b/src/opengl/util/fragmentprograms_p.h
@@ -71,7 +71,7 @@ enum FragmentVariable {
     VAR_FMP2_M_RADIUS2,
     VAR_FMP,
     VAR_INV_MATRIX_M0,
-    VAR_ANGLE,
+    VAR_ANGLE
 };
 
 enum FragmentBrushType {
@@ -80,7 +80,7 @@ enum FragmentBrushType {
     FRAGMENT_PROGRAM_BRUSH_CONICAL,
     FRAGMENT_PROGRAM_BRUSH_LINEAR,
     FRAGMENT_PROGRAM_BRUSH_TEXTURE,
-    FRAGMENT_PROGRAM_BRUSH_PATTERN,
+    FRAGMENT_PROGRAM_BRUSH_PATTERN
 };
 
 enum FragmentCompositionModeType {
@@ -109,12 +109,12 @@ enum FragmentCompositionModeType {
     COMPOSITION_MODES_DIFFERENCE_NOMASK,
     COMPOSITION_MODES_EXCLUSION_NOMASK,
     COMPOSITION_MODE_BLEND_MODE_MASK,
-    COMPOSITION_MODE_BLEND_MODE_NOMASK,
+    COMPOSITION_MODE_BLEND_MODE_NOMASK
 };
 
 enum FragmentMaskType {
     FRAGMENT_PROGRAM_MASK_TRAPEZOID_AA,
-    FRAGMENT_PROGRAM_MASK_ELLIPSE_AA,
+    FRAGMENT_PROGRAM_MASK_ELLIPSE_AA
 };
 
 static const unsigned int num_fragment_variables = 19;
diff --git a/src/opengl/util/generator.cpp b/src/opengl/util/generator.cpp
index de2450d..430ced1 100644
--- a/src/opengl/util/generator.cpp
+++ b/src/opengl/util/generator.cpp
@@ -48,6 +48,7 @@
 #include <QTextStream>
 
 #include <QtDebug>
+#include <cstdlib>
 
 QT_BEGIN_NAMESPACE
 
@@ -116,7 +117,7 @@ QList<QStringPair> readConf(const QString &confFile)
         lineStream >> enumerator;
 
         if (lineStream.atEnd()) {
-            qDebug() << "Error in file" << confFile << "(" << enumerator << ")";
+            qDebug() << "Error in file" << confFile << '(' << enumerator << ')';
             exit(0);
         }