Merge branch '4.7' of git@scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.7

Conflicts:

	doc/src/modules.qdoc
	mkspecs/common/symbian/symbian.conf
	src/gui/graphicsview/qgraphicswidget.h
	src/s60installs/bwins/QtGuiu.def
	src/s60installs/eabi/QtGuiu.def

44 files changed, 5953 insertions, 1310 deletions

diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
index 516b847..559a6fd 100644
--- a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
@@ -61,12 +61,6 @@ 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::addClosingLine(int index)
 {
     if (QPointF(vertexArray.at(index)) != QPointF(vertexArray.last()))
@@ -145,7 +139,7 @@ void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseSc
                 // threshold based on same algorithm as in qtriangulatingstroker.cpp
                 int threshold = qMin<float>(64, qMax(bounds.width(), bounds.height()) * 3.14f / (curveInverseScale * 6));
                 if (threshold < 3) threshold = 3;
-                qreal one_over_threshold_minus_1 = 1.f / (threshold - 1);
+                qreal one_over_threshold_minus_1 = qreal(1) / (threshold - 1);
                 for (int t=0; t<threshold; ++t) {
                     QPointF pt = b.pointAt(t * one_over_threshold_minus_1);
                     lineToArray(pt.x(), pt.y());
diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
index e0497b1..adc69ee 100644
--- a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
@@ -102,8 +102,41 @@ public:
     QGL2PEXVertexArray() :
         maxX(-2e10), maxY(-2e10), minX(2e10), minY(2e10),
         boundingRectDirty(true) {}
+    
+    inline void addRect(const QRectF &rect)
+    {
+        qreal top = rect.top();
+        qreal left = rect.left();
+        qreal bottom = rect.bottom();
+        qreal right = rect.right();
+    
+        vertexArray << QGLPoint(left, top)
+                    << QGLPoint(right, top)
+                    << QGLPoint(right, bottom)
+                    << QGLPoint(right, bottom)
+                    << QGLPoint(left, bottom)
+                    << QGLPoint(left, top);        
+    }
+
+    inline void addQuad(const QRectF &rect)
+    {
+        qreal top = rect.top();
+        qreal left = rect.left();
+        qreal bottom = rect.bottom();
+        qreal right = rect.right();
+
+        vertexArray << QGLPoint(left, top)
+                    << QGLPoint(right, top)
+                    << QGLPoint(left, bottom)
+                    << QGLPoint(right, bottom);
+
+    }
+
+    inline void addVertex(const GLfloat x, const GLfloat y)
+    {
+        vertexArray.add(QGLPoint(x, y));
+    }
 
-    void addRect(const QRectF &rect);
     void addPath(const QVectorPath &path, GLfloat curveInverseScale, bool outline = true);
     void clear();
 
diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
index 8183f08..ac25597 100644
--- a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
@@ -96,6 +96,7 @@ QGLEngineSharedShaders::QGLEngineSharedShaders(const QGLContext* context)
 
         code[UntransformedPositionVertexShader] = qglslUntransformedPositionVertexShader;
         code[PositionOnlyVertexShader] = qglslPositionOnlyVertexShader;
+        code[ComplexGeometryPositionOnlyVertexShader] = qglslComplexGeometryPositionOnlyVertexShader;
         code[PositionWithPatternBrushVertexShader] = qglslPositionWithPatternBrushVertexShader;
         code[PositionWithLinearGradientBrushVertexShader] = qglslPositionWithLinearGradientBrushVertexShader;
         code[PositionWithConicalGradientBrushVertexShader] = qglslPositionWithConicalGradientBrushVertexShader;
@@ -327,7 +328,7 @@ QGLEngineShaderProg *QGLEngineSharedShaders::findProgramInCache(const QGLEngineS
             newProg->program->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);
         if (newProg->useOpacityAttribute)
             newProg->program->bindAttributeLocation("opacityArray", QT_OPACITY_ATTR);
-        if (newProg->usePmvMatrix) {
+        if (newProg->usePmvMatrixAttribute) {
             newProg->program->bindAttributeLocation("pmvMatrix1", QT_PMV_MATRIX_1_ATTR);
             newProg->program->bindAttributeLocation("pmvMatrix2", QT_PMV_MATRIX_2_ATTR);
             newProg->program->bindAttributeLocation("pmvMatrix3", QT_PMV_MATRIX_3_ATTR);
@@ -401,6 +402,7 @@ void QGLEngineSharedShaders::cleanupCustomStage(QGLCustomShaderStage* stage)
 QGLEngineShaderManager::QGLEngineShaderManager(QGLContext* context)
     : ctx(context),
       shaderProgNeedsChanging(true),
+      complexGeometry(false),
       srcPixelType(Qt::NoBrush),
       opacityMode(NoOpacity),
       maskType(NoMask),
@@ -442,7 +444,8 @@ GLuint QGLEngineShaderManager::getUniformLocation(Uniform id)
         "inverse_2_fmp2_m_radius2",
         "invertedTextureSize",
         "brushTransform",
-        "brushTexture"
+        "brushTexture",
+        "matrix"
     };
 
     if (uniformLocations.at(id) == GLuint(-1))
@@ -750,7 +753,16 @@ bool QGLEngineShaderManager::useCorrectShaderProg()
     }
     requiredProgram.useTextureCoords = texCoords;
     requiredProgram.useOpacityAttribute = (opacityMode == AttributeOpacity);
-    requiredProgram.usePmvMatrix = true;
+    if (complexGeometry && srcPixelType == Qt::SolidPattern) {
+        requiredProgram.positionVertexShader = QGLEngineSharedShaders::ComplexGeometryPositionOnlyVertexShader;
+        requiredProgram.usePmvMatrixAttribute = false;
+    } else {
+        requiredProgram.usePmvMatrixAttribute = true;
+
+        // Force complexGeometry off, since we currently don't support that mode for
+        // non-solid brushes
+        complexGeometry = false;
+    }
 
     // At this point, requiredProgram is fully populated so try to find the program in the cache
     currentShaderProg = sharedShaders->findProgramInCache(requiredProgram);
diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
index 3ab4ebe..06b96ae 100644
--- a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
@@ -272,6 +272,7 @@ public:
         // UntransformedPositionVertexShader must be first in the list:
         UntransformedPositionVertexShader,
         PositionOnlyVertexShader,
+        ComplexGeometryPositionOnlyVertexShader,
         PositionWithPatternBrushVertexShader,
         PositionWithLinearGradientBrushVertexShader,
         PositionWithConicalGradientBrushVertexShader,
@@ -400,7 +401,7 @@ public:
 
     bool                useTextureCoords;
     bool                useOpacityAttribute;
-    bool                usePmvMatrix;
+    bool                usePmvMatrixAttribute;
 
     bool operator==(const QGLEngineShaderProg& other) {
         // We don't care about the program
@@ -446,6 +447,7 @@ public:
         InvertedTextureSize,
         BrushTransform,
         BrushTexture,
+        Matrix,
         NumUniforms
     };
 
@@ -474,6 +476,15 @@ public:
 
     void useSimpleProgram();
     void useBlitProgram();
+    void setHasComplexGeometry(bool hasComplexGeometry)
+    {
+        complexGeometry = hasComplexGeometry;
+        shaderProgNeedsChanging = true;
+    }
+    bool hasComplexGeometry() const
+    {
+        return complexGeometry;
+    }
 
     QGLShaderProgram* currentProgram(); // Returns pointer to the shader the manager has chosen
     QGLShaderProgram* simpleProgram(); // Used to draw into e.g. stencil buffers
@@ -487,6 +498,7 @@ private slots:
 private:
     QGLContext*     ctx;
     bool            shaderProgNeedsChanging;
+    bool            complexGeometry;
 
     // Current state variables which influence the choice of shader:
     QTransform                  brushTransform;
diff --git a/src/opengl/gl2paintengineex/qglengineshadersource_p.h b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
index c88c041..3379296 100644
--- a/src/opengl/gl2paintengineex/qglengineshadersource_p.h
+++ b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
@@ -107,6 +107,14 @@ static const char* const qglslPositionOnlyVertexShader = "\n\
         gl_Position = vec4(transformedPos.xy, 0.0, transformedPos.z); \n\
     }\n";
 
+static const char* const qglslComplexGeometryPositionOnlyVertexShader = "\n\
+    uniform highp mat3 matrix; \n\
+    attribute highp vec2 vertexCoordsArray; \n\
+    void setPosition(void) \n\
+    { \n\
+      gl_Position = vec4(matrix * vec3(vertexCoordsArray, 1), 1);\n\
+    } \n";
+
 static const char* const qglslUntransformedPositionVertexShader = "\n\
     attribute highp   vec4      vertexCoordsArray; \n\
     void setPosition(void) \n\
diff --git a/src/opengl/gl2paintengineex/qglgradientcache.cpp b/src/opengl/gl2paintengineex/qglgradientcache.cpp
index 192e01c..a1495dd 100644
--- a/src/opengl/gl2paintengineex/qglgradientcache.cpp
+++ b/src/opengl/gl2paintengineex/qglgradientcache.cpp
@@ -39,10 +39,10 @@
 **
 ****************************************************************************/
 
+#include "qglgradientcache_p.h"
 #include <private/qdrawhelper_p.h>
 #include <private/qgl_p.h>
 
-#include "qglgradientcache_p.h"
 
 QT_BEGIN_NAMESPACE
 
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index 2b8e097..9ed722f 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -64,6 +64,7 @@
 
 // #define QT_OPENGL_CACHE_AS_VBOS
 
+#include "qglgradientcache_p.h"
 #include "qpaintengineex_opengl2_p.h"
 
 #include <string.h> //for memcpy
@@ -77,8 +78,9 @@
 #include <private/qfontengine_p.h>
 #include <private/qpixmapdata_gl_p.h>
 #include <private/qdatabuffer_p.h>
+#include <private/qstatictext_p.h>
+#include <private/qtriangulator_p.h>
 
-#include "qglgradientcache_p.h"
 #include "qglengineshadermanager_p.h"
 #include "qgl2pexvertexarray_p.h"
 #include "qtriangulatingstroker_p.h"
@@ -107,6 +109,11 @@ QGL2PaintEngineExPrivate::~QGL2PaintEngineExPrivate()
         e->data = 0;
         e->engine = 0;
     }
+
+    if (elementIndicesVBOId != 0) {
+        glDeleteBuffers(1, &elementIndicesVBOId);
+        elementIndicesVBOId = 0;
+    }
 }
 
 void QGL2PaintEngineExPrivate::updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform, GLuint id)
@@ -388,6 +395,7 @@ void QGL2PaintEngineExPrivate::updateMatrix()
                         qreal(0.0001));
 
     matrixDirty = false;
+    matrixUniformDirty = true;
 
     // Set the PMV matrix attribute. As we use an attributes rather than uniforms, we only
     // need to do this once for every matrix change and persists across all shader programs.
@@ -521,10 +529,10 @@ void QGL2PaintEngineEx::beginNativePainting()
 
     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() }
+        { float(mtx.m11()), float(mtx.m12()),     0, float(mtx.m13()) },
+        { float(mtx.m21()), float(mtx.m22()),     0, float(mtx.m23()) },
+        {                0,                0,     1,                0 },
+        {  float(mtx.dx()),  float(mtx.dy()),     0, float(mtx.m33()) }
     };
 
     const QSize sz = d->device->size();
@@ -587,6 +595,9 @@ void QGL2PaintEngineExPrivate::transferMode(EngineMode newMode)
     if (newMode == TextDrawingMode) {
         setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinateArray.data());
         setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinateArray.data());
+        shaderManager->setHasComplexGeometry(true);
+    } else {
+        shaderManager->setHasComplexGeometry(false);
     }
 
     if (newMode == ImageDrawingMode) {
@@ -611,10 +622,13 @@ struct QGL2PEVectorPathCache
 {
 #ifdef QT_OPENGL_CACHE_AS_VBOS
     GLuint vbo;
+    GLuint ibo;
 #else
     float *vertices;
+    quint32 *indices;
 #endif
     int vertexCount;
+    int indexCount;
     GLenum primitiveType;
     qreal iscale;
 };
@@ -625,9 +639,12 @@ void QGL2PaintEngineExPrivate::cleanupVectorPath(QPaintEngineEx *engine, void *d
 #ifdef QT_OPENGL_CACHE_AS_VBOS
     Q_ASSERT(engine->type() == QPaintEngine::OpenGL2);
     static_cast<QGL2PaintEngineEx *>(engine)->d_func()->unusedVBOSToClean << c->vbo;
+    if (c->ibo)
+        d->unusedIBOSToClean << c->ibo;
 #else
     Q_UNUSED(engine);
     qFree(c->vertices);
+    qFree(c->indices);
 #endif
     delete c;
 }
@@ -658,6 +675,9 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
 
     const QPointF* const points = reinterpret_cast<const QPointF*>(path.points());
 
+    // ### Remove before release...
+    static bool do_vectorpath_cache = qgetenv("QT_OPENGL_NO_PATH_CACHE").isEmpty();
+
     // 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());
@@ -669,6 +689,8 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
             QVectorPath::CacheEntry *data = path.lookupCacheData(q);
             QGL2PEVectorPathCache *cache;
 
+            bool updateCache = false;
+
             if (data) {
                 cache = (QGL2PEVectorPathCache *) data->data;
                 // Check if scale factor is exceeded for curved paths and generate curves if so...
@@ -678,34 +700,39 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
 #ifdef QT_OPENGL_CACHE_AS_VBOS
                         glDeleteBuffers(1, &cache->vbo);
                         cache->vbo = 0;
+                        Q_ASSERT(cache->ibo == 0);
 #else
                         qFree(cache->vertices);
+                        Q_ASSERT(cache->indices == 0);
 #endif
-                        cache->vertexCount = 0;
+                        updateCache = true;
                     }
                 }
             } else {
                 cache = new QGL2PEVectorPathCache;
-                cache->vertexCount = 0;
                 data = const_cast<QVectorPath &>(path).addCacheData(q, cache, cleanupVectorPath);
+                updateCache = true;
             }
 
             // Flatten the path at the current scale factor and fill it into the cache struct.
-            if (!cache->vertexCount) {
+            if (updateCache) {
                 vertexCoordinateArray.clear();
                 vertexCoordinateArray.addPath(path, inverseScale, false);
                 int vertexCount = vertexCoordinateArray.vertexCount();
                 int floatSizeInBytes = vertexCount * 2 * sizeof(float);
                 cache->vertexCount = vertexCount;
+                cache->indexCount = 0;
                 cache->primitiveType = GL_TRIANGLE_FAN;
                 cache->iscale = inverseScale;
 #ifdef QT_OPENGL_CACHE_AS_VBOS
                 glGenBuffers(1, &cache->vbo);
                 glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
                 glBufferData(GL_ARRAY_BUFFER, floatSizeInBytes, vertexCoordinateArray.data(), GL_STATIC_DRAW);
+                cache->ibo = 0;
 #else
                 cache->vertices = (float *) qMalloc(floatSizeInBytes);
                 memcpy(cache->vertices, vertexCoordinateArray.data(), floatSizeInBytes);
+                cache->indices = 0;
 #endif
             }
 
@@ -721,8 +748,6 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
         } else {
       //        printf(" - Marking path as cachable...\n");
             // Tag it for later so that if the same path is drawn twice, it is assumed to be static and thus cachable
-            // ### Remove before release...
-            static bool do_vectorpath_cache = qgetenv("QT_OPENGL_NO_PATH_CACHE").isEmpty();
             if (do_vectorpath_cache)
                 path.makeCacheable();
             vertexCoordinateArray.clear();
@@ -732,31 +757,117 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
         }
 
     } else {
-        // The path is too complicated & needs the stencil technique
-        vertexCoordinateArray.clear();
-        vertexCoordinateArray.addPath(path, inverseScale, false);
+        bool useCache = path.isCacheable();
+        if (useCache) {
+            QRectF bbox = path.controlPointRect();
+            // If the path doesn't fit within these limits, it is possible that the triangulation will fail.
+            useCache &= (bbox.left() > -0x8000 * inverseScale)
+                     && (bbox.right() < 0x8000 * inverseScale)
+                     && (bbox.top() > -0x8000 * inverseScale)
+                     && (bbox.bottom() < 0x8000 * inverseScale);
+        }
 
-        fillStencilWithVertexArray(vertexCoordinateArray, path.hasWindingFill());
+        if (useCache) {
+            QVectorPath::CacheEntry *data = path.lookupCacheData(q);
+            QGL2PEVectorPathCache *cache;
 
-        glStencilMask(0xff);
-        glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE);
+            bool updateCache = false;
+
+            if (data) {
+                cache = (QGL2PEVectorPathCache *) data->data;
+                // Check if scale factor is exceeded for curved paths and generate curves if so...
+                if (path.isCurved()) {
+                    qreal scaleFactor = cache->iscale / inverseScale;
+                    if (scaleFactor < 0.5 || scaleFactor > 2.0) {
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+                        glDeleteBuffers(1, &cache->vbo);
+                        glDeleteBuffers(1, &cache->ibo);
+#else
+                        qFree(cache->vertices);
+                        qFree(cache->indices);
+#endif
+                        updateCache = true;
+                    }
+                }
+            } else {
+                cache = new QGL2PEVectorPathCache;
+                data = const_cast<QVectorPath &>(path).addCacheData(q, cache, cleanupVectorPath);
+                updateCache = true;
+            }
+
+            // Flatten the path at the current scale factor and fill it into the cache struct.
+            if (updateCache) {
+                QTriangleSet polys = qTriangulate(path, QTransform().scale(1 / inverseScale, 1 / inverseScale));
+                cache->vertexCount = polys.vertices.size() / 2;
+                cache->indexCount = polys.indices.size();
+                cache->primitiveType = GL_TRIANGLES;
+                cache->iscale = inverseScale;
+
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+                glGenBuffers(1, &cache->vbo);
+                glGenBuffers(1, &cache->ibo);
+                glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
+                glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cache->ibo);
+                glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(quint32) * polys.indices.size(), polys.indices.data(), GL_STATIC_DRAW);
+
+                QVarLengthArray<float> vertices(polys.vertices.size());
+                for (int i = 0; i < polys.vertices.size(); ++i)
+                    vertices[i] = float(inverseScale * polys.vertices.at(i));
+                glBufferData(GL_ARRAY_BUFFER, sizeof(float) * vertices.size(), vertices.data(), GL_STATIC_DRAW);
+#else
+                cache->vertices = (float *) qMalloc(sizeof(float) * polys.vertices.size());
+                cache->indices = (quint32 *) qMalloc(sizeof(quint32) * polys.indices.size());
+                memcpy(cache->indices, polys.indices.data(), sizeof(quint32) * polys.indices.size());
+                for (int i = 0; i < polys.vertices.size(); ++i)
+                    cache->vertices[i] = float(inverseScale * polys.vertices.at(i));
+#endif
+            }
+
+            prepareForDraw(currentBrush.isOpaque());
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+            glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
+            glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cache->ibo);
+            setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, 0);
+            glDrawElements(cache->primitiveType, cache->indexCount, GL_UNSIGNED_INT, 0);
+            glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+            glBindBuffer(GL_ARRAY_BUFFER, 0);
+#else
+            setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, cache->vertices);
+            glDrawElements(cache->primitiveType, cache->indexCount, GL_UNSIGNED_INT, cache->indices);
+#endif
 
-        if (q->state()->clipTestEnabled) {
-            // Pass when high bit is set, replace stencil value with current clip
-            glStencilFunc(GL_NOTEQUAL, q->state()->currentClip, GL_STENCIL_HIGH_BIT);
-        } else if (path.hasWindingFill()) {
-            // Pass when any bit is set, replace stencil value with 0
-            glStencilFunc(GL_NOTEQUAL, 0, 0xff);
         } else {
-            // Pass when high bit is set, replace stencil value with 0
-            glStencilFunc(GL_NOTEQUAL, 0, GL_STENCIL_HIGH_BIT);
-        }
-        prepareForDraw(currentBrush.isOpaque());
+      //        printf(" - Marking path as cachable...\n");
+            // Tag it for later so that if the same path is drawn twice, it is assumed to be static and thus cachable
+            if (do_vectorpath_cache)
+                path.makeCacheable();
 
-        // Stencil the brush onto the dest buffer
-        composite(vertexCoordinateArray.boundingRect());
-        glStencilMask(0);
-        updateClipScissorTest();
+            // The path is too complicated & needs the stencil technique
+            vertexCoordinateArray.clear();
+            vertexCoordinateArray.addPath(path, inverseScale, false);
+
+            fillStencilWithVertexArray(vertexCoordinateArray, path.hasWindingFill());
+
+            glStencilMask(0xff);
+            glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE);
+
+            if (q->state()->clipTestEnabled) {
+                // Pass when high bit is set, replace stencil value with current clip
+                glStencilFunc(GL_NOTEQUAL, q->state()->currentClip, GL_STENCIL_HIGH_BIT);
+            } else if (path.hasWindingFill()) {
+                // Pass when any bit is set, replace stencil value with 0
+                glStencilFunc(GL_NOTEQUAL, 0, 0xff);
+            } else {
+                // Pass when high bit is set, replace stencil value with 0
+                glStencilFunc(GL_NOTEQUAL, 0, GL_STENCIL_HIGH_BIT);
+            }
+            prepareForDraw(currentBrush.isOpaque());
+
+            // Stencil the brush onto the dest buffer
+            composite(vertexCoordinateArray.boundingRect());
+            glStencilMask(0);
+            updateClipScissorTest();
+        }
     }
 }
 
@@ -938,6 +1049,7 @@ bool QGL2PaintEngineExPrivate::prepareForDraw(bool srcPixelsAreOpaque)
         // The shader program has changed so mark all uniforms as dirty:
         brushUniformsDirty = true;
         opacityUniformDirty = true;
+        matrixUniformDirty = true;
     }
 
     if (brushUniformsDirty && mode != ImageDrawingMode && mode != ImageArrayDrawingMode)
@@ -948,6 +1060,12 @@ bool QGL2PaintEngineExPrivate::prepareForDraw(bool srcPixelsAreOpaque)
         opacityUniformDirty = false;
     }
 
+    if (matrixUniformDirty && shaderManager->hasComplexGeometry()) {
+        shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::Matrix),
+                                                         pmvMatrix);
+        matrixUniformDirty = false;
+    }
+
     return changed;
 }
 
@@ -1048,16 +1166,20 @@ void QGL2PaintEngineExPrivate::stroke(const QVectorPath &path, const QPen &pen)
     // prepareForDraw() down below.
     updateMatrix();
 
+    QRectF clip = q->state()->matrix.inverted().mapRect(q->state()->clipEnabled
+                                                        ? q->state()->rectangleClip
+                                                        : QRectF(0, 0, width, height));
+
     if (penStyle == Qt::SolidLine) {
-        stroker.process(path, pen);
+        stroker.process(path, pen, clip);
 
     } else { // Some sort of dash
-        dasher.process(path, pen);
+        dasher.process(path, pen, clip);
 
         QVectorPath dashStroke(dasher.points(),
                                dasher.elementCount(),
                                dasher.elementTypes());
-        stroker.process(dashStroke, pen);
+        stroker.process(dashStroke, pen, clip);
     }
 
     if (opaque) {
@@ -1192,6 +1314,19 @@ void QGL2PaintEngineEx::drawImage(const QRectF& dest, const QImage& image, const
     d->drawTexture(dest, src, image.size(), !image.hasAlphaChannel());
 }
 
+void QGL2PaintEngineEx::drawStaticTextItem(QStaticTextItem *textItem)
+{
+    Q_D(QGL2PaintEngineEx);
+
+    ensureActive();
+
+    QFontEngineGlyphCache::Type glyphType = textItem->fontEngine->glyphFormat >= 0
+                                            ? QFontEngineGlyphCache::Type(textItem->fontEngine->glyphFormat)
+                                            : d->glyphCacheType;
+
+    d->drawCachedGlyphs(glyphType, textItem, true);
+}
+
 void QGL2PaintEngineEx::drawTexture(const QRectF &dest, GLuint textureId, const QSize &size, const QRectF &src)
 {
     Q_D(QGL2PaintEngineEx);
@@ -1245,33 +1380,72 @@ void QGL2PaintEngineEx::drawTextItem(const QPointF &p, const QTextItem &textItem
     }
 
     if (drawCached) {
-        d->drawCachedGlyphs(p, glyphType, ti);
+        QVarLengthArray<QFixedPoint> positions;
+        QVarLengthArray<glyph_t> glyphs;
+        QTransform matrix = QTransform::fromTranslate(p.x(), p.y());
+        ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
+
+        {
+            QStaticTextItem staticTextItem;
+            staticTextItem.chars = ti.chars;
+            staticTextItem.fontEngine = ti.fontEngine;
+            staticTextItem.glyphs = glyphs.data();
+            staticTextItem.numChars = ti.num_chars;
+            staticTextItem.numGlyphs = glyphs.size();
+            staticTextItem.glyphPositions = positions.data();
+
+            d->drawCachedGlyphs(glyphType, &staticTextItem, false);
+        }
         return;
     }
 
     QPaintEngineEx::drawTextItem(p, ti);
 }
 
-void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGlyphCache::Type glyphType,
-                                                const QTextItemInt &ti)
+namespace {
+
+    class QOpenGLStaticTextUserData: public QStaticTextUserData
+    {
+    public:
+        QOpenGLStaticTextUserData()
+            : QStaticTextUserData(OpenGLUserData)
+        {
+        }
+
+        ~QOpenGLStaticTextUserData()
+        {
+        }
+
+        QGL2PEXVertexArray vertexCoordinateArray;
+        QGL2PEXVertexArray textureCoordinateArray;
+    };
+
+}
+
+// #define QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO
+
+void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyphType,
+                                                QStaticTextItem *staticTextItem,
+                                                bool includeMatrixInCache)
 {
     Q_Q(QGL2PaintEngineEx);
 
-    QVarLengthArray<QFixedPoint> positions;
-    QVarLengthArray<glyph_t> glyphs;
-    QTransform matrix = QTransform::fromTranslate(p.x(), p.y());
-    ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
+    QOpenGL2PaintEngineState *s = q->state();
 
     QGLTextureGlyphCache *cache =
-            (QGLTextureGlyphCache *) ti.fontEngine->glyphCache(ctx, glyphType, QTransform());
-
+        (QGLTextureGlyphCache *) staticTextItem->fontEngine->glyphCache(ctx, glyphType,
+                                                                        includeMatrixInCache
+                                                                          ? s->matrix
+                                                                          : QTransform());
     if (!cache || cache->cacheType() != glyphType) {
-        cache = new QGLTextureGlyphCache(ctx, glyphType, QTransform());
-        ti.fontEngine->setGlyphCache(ctx, cache);
+        cache = new QGLTextureGlyphCache(ctx, glyphType,
+                                         includeMatrixInCache ? s->matrix : QTransform());
+        staticTextItem->fontEngine->setGlyphCache(ctx, cache);
     }
 
     cache->setPaintEnginePrivate(this);
-    cache->populate(ti, glyphs, positions);
+    cache->populate(staticTextItem->fontEngine, staticTextItem->numGlyphs, staticTextItem->glyphs,
+                    staticTextItem->glyphPositions);
 
     if (cache->width() == 0 || cache->height() == 0)
         return;
@@ -1283,20 +1457,83 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly
     GLfloat dx = 1.0 / cache->width();
     GLfloat dy = 1.0 / cache->height();
 
-    vertexCoordinateArray.clear();
-    textureCoordinateArray.clear();
+    bool recreateVertexArrays = false;
+    if (staticTextItem->userDataNeedsUpdate)
+        recreateVertexArrays = true;
+    else if (staticTextItem->userData == 0)
+        recreateVertexArrays = true;
+    else if (staticTextItem->userData->type != QStaticTextUserData::OpenGLUserData)
+        recreateVertexArrays = true;
 
-    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;
+    // Use global arrays by default
+    QGL2PEXVertexArray *vertexCoordinates = &vertexCoordinateArray;
+    QGL2PEXVertexArray *textureCoordinates = &textureCoordinateArray;
 
-        vertexCoordinateArray.addRect(QRectF(x, y, c.w, c.h));
-        textureCoordinateArray.addRect(QRectF(c.x*dx, c.y*dy, c.w * dx, c.h * dy));
+    if (staticTextItem->useBackendOptimizations) {
+        QOpenGLStaticTextUserData *userData = 0;
+
+        if (staticTextItem->userData == 0
+            || staticTextItem->userData->type != QStaticTextUserData::OpenGLUserData) {
+
+            userData = new QOpenGLStaticTextUserData();
+            staticTextItem->setUserData(userData);
+
+        } else {
+            userData = static_cast<QOpenGLStaticTextUserData*>(staticTextItem->userData);
+        }
+
+        // Use cache if backend optimizations is turned on
+        vertexCoordinates = &userData->vertexCoordinateArray;
+        textureCoordinates = &userData->textureCoordinateArray;
     }
 
-    setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinateArray.data());
-    setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinateArray.data());
+
+    if (recreateVertexArrays) {
+        vertexCoordinates->clear();
+        textureCoordinates->clear();
+
+        for (int i=0; i<staticTextItem->numGlyphs; ++i) {
+            const QTextureGlyphCache::Coord &c = cache->coords.value(staticTextItem->glyphs[i]);
+            int x = staticTextItem->glyphPositions[i].x.toInt() + c.baseLineX - margin;
+            int y = staticTextItem->glyphPositions[i].y.toInt() - c.baseLineY - margin;
+
+            vertexCoordinates->addQuad(QRectF(x, y, c.w, c.h));
+            textureCoordinates->addQuad(QRectF(c.x*dx, c.y*dy, c.w * dx, c.h * dy));
+        }
+
+        staticTextItem->userDataNeedsUpdate = false;
+    }
+
+    if (elementIndices.size() < staticTextItem->numGlyphs*6) {
+        Q_ASSERT(elementIndices.size() % 6 == 0);
+        int j = elementIndices.size() / 6 * 4;
+        while (j < staticTextItem->numGlyphs*4) {
+            elementIndices.append(j + 0);
+            elementIndices.append(j + 0);
+            elementIndices.append(j + 1);
+            elementIndices.append(j + 2);
+            elementIndices.append(j + 3);
+            elementIndices.append(j + 3);
+
+            j += 4;
+        }
+
+#if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO)
+        if (elementIndicesVBOId == 0)
+            glGenBuffers(1, &elementIndicesVBOId);
+
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementIndicesVBOId);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, elementIndices.size() * sizeof(GLushort),
+                     elementIndices.constData(), GL_STATIC_DRAW);
+#endif
+    } else {
+#if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO)
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementIndicesVBOId);
+#endif
+    }
+
+    setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinates->data());
+    setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinates->data());
 
     if (addOffset) {
         addOffset = false;
@@ -1310,6 +1547,13 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly
     QBrush pensBrush = q->state()->pen.brush();
     setBrush(pensBrush);
 
+    // When painting a QStaticTextItem, the glyph positions are already in device coordinates,
+    // therefore we temporarily set an identity matrix on the painter for the draw call to
+    // avoid transforming the positions twice.
+    QTransform old = s->matrix;
+    if (includeMatrixInCache)
+        s->matrix = QTransform();
+
     if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) {
 
         // Subpixel antialiasing without gamma correction
@@ -1363,7 +1607,11 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly
             updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, false);
 
             shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::MaskTexture), QT_MASK_TEXTURE_UNIT);
-            glDrawArrays(GL_TRIANGLES, 0, 6 * glyphs.size());
+#if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO)
+            glDrawElements(GL_TRIANGLE_STRIP, 6 * staticTextItem->numGlyphs, GL_UNSIGNED_SHORT, 0);
+#else
+            glDrawElements(GL_TRIANGLE_STRIP, 6 * staticTextItem->numGlyphs, GL_UNSIGNED_SHORT, elementIndices.data());
+#endif
 
             shaderManager->setMaskType(QGLEngineShaderManager::SubPixelMaskPass2);
 
@@ -1389,28 +1637,42 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly
     //### TODO: Gamma correction
 
     glActiveTexture(GL_TEXTURE0 + QT_MASK_TEXTURE_UNIT);
-    glBindTexture(GL_TEXTURE_2D, cache->texture());
+    if (lastMaskTextureUsed != cache->texture()) {
+        glBindTexture(GL_TEXTURE_2D, cache->texture());
+        lastMaskTextureUsed = cache->texture();
+    }
     updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, false);
-
     shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::MaskTexture), QT_MASK_TEXTURE_UNIT);
-    glDrawArrays(GL_TRIANGLES, 0, 6 * glyphs.size());
+
+#if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO)
+    glDrawElements(GL_TRIANGLE_STRIP, 6 * staticTextItem->numGlyphs, GL_UNSIGNED_SHORT, 0);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+#else
+    glDrawElements(GL_TRIANGLE_STRIP, 6 * staticTextItem->numGlyphs, GL_UNSIGNED_SHORT, elementIndices.data());
+#endif
+
+    if (includeMatrixInCache)
+        s->matrix = old;
 }
 
-void QGL2PaintEngineEx::drawPixmaps(const QDrawPixmaps::Data *drawingData, int dataCount, const QPixmap &pixmap, QDrawPixmaps::DrawingHints hints)
+void QGL2PaintEngineEx::drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap,
+                                            QPainter::PixmapFragmentHints hints)
 {
     Q_D(QGL2PaintEngineEx);
     // Use fallback for extended composition modes.
     if (state()->composition_mode > QPainter::CompositionMode_Plus) {
-        QPaintEngineEx::drawPixmaps(drawingData, dataCount, pixmap, hints);
+        QPaintEngineEx::drawPixmapFragments(fragments, fragmentCount, pixmap, hints);
         return;
     }
 
     ensureActive();
-    d->drawPixmaps(drawingData, dataCount, pixmap, hints);
+    d->drawPixmapFragments(fragments, fragmentCount, pixmap, hints);
 }
 
 
-void QGL2PaintEngineExPrivate::drawPixmaps(const QDrawPixmaps::Data *drawingData, int dataCount, const QPixmap &pixmap, QDrawPixmaps::DrawingHints hints)
+void QGL2PaintEngineExPrivate::drawPixmapFragments(const QPainter::PixmapFragment *fragments,
+                                                   int fragmentCount, const QPixmap &pixmap,
+                                                   QPainter::PixmapFragmentHints hints)
 {
     GLfloat dx = 1.0f / pixmap.size().width();
     GLfloat dy = 1.0f / pixmap.size().height();
@@ -1431,37 +1693,38 @@ void QGL2PaintEngineExPrivate::drawPixmaps(const QDrawPixmaps::Data *drawingData
 
     bool allOpaque = true;
 
-    for (int i = 0; i < dataCount; ++i) {
+    for (int i = 0; i < fragmentCount; ++i) {
         qreal s = 0;
         qreal c = 1;
-        if (drawingData[i].rotation != 0) {
-            s = qFastSin(drawingData[i].rotation * Q_PI / 180);
-            c = qFastCos(drawingData[i].rotation * Q_PI / 180);
+        if (fragments[i].rotation != 0) {
+            s = qFastSin(fragments[i].rotation * Q_PI / 180);
+            c = qFastCos(fragments[i].rotation * Q_PI / 180);
         }
 
-        qreal right = 0.5 * drawingData[i].scaleX * drawingData[i].source.width();
-        qreal bottom = 0.5 * drawingData[i].scaleY * drawingData[i].source.height();
+        qreal right = 0.5 * fragments[i].scaleX * fragments[i].width;
+        qreal bottom = 0.5 * fragments[i].scaleY * fragments[i].height;
         QGLPoint bottomRight(right * c - bottom * s, right * s + bottom * c);
         QGLPoint bottomLeft(-right * c - bottom * s, -right * s + bottom * c);
 
-        vertexCoordinateArray.lineToArray(bottomRight.x + drawingData[i].point.x(), bottomRight.y + drawingData[i].point.y());
-        vertexCoordinateArray.lineToArray(-bottomLeft.x + drawingData[i].point.x(), -bottomLeft.y + drawingData[i].point.y());
-        vertexCoordinateArray.lineToArray(-bottomRight.x + drawingData[i].point.x(), -bottomRight.y + drawingData[i].point.y());
-        vertexCoordinateArray.lineToArray(-bottomRight.x + drawingData[i].point.x(), -bottomRight.y + drawingData[i].point.y());
-        vertexCoordinateArray.lineToArray(bottomLeft.x + drawingData[i].point.x(), bottomLeft.y + drawingData[i].point.y());
-        vertexCoordinateArray.lineToArray(bottomRight.x + drawingData[i].point.x(), bottomRight.y + drawingData[i].point.y());
-
-        QGLRect src(drawingData[i].source.left() * dx, drawingData[i].source.top() * dy,
-                    drawingData[i].source.right() * dx, drawingData[i].source.bottom() * dy);
-
-        textureCoordinateArray.lineToArray(src.right, src.bottom);
-        textureCoordinateArray.lineToArray(src.right, src.top);
-        textureCoordinateArray.lineToArray(src.left, src.top);
-        textureCoordinateArray.lineToArray(src.left, src.top);
-        textureCoordinateArray.lineToArray(src.left, src.bottom);
-        textureCoordinateArray.lineToArray(src.right, src.bottom);
-
-        qreal opacity = drawingData[i].opacity * q->state()->opacity;
+        vertexCoordinateArray.addVertex(bottomRight.x + fragments[i].x, bottomRight.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(-bottomLeft.x + fragments[i].x, -bottomLeft.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(-bottomRight.x + fragments[i].x, -bottomRight.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(-bottomRight.x + fragments[i].x, -bottomRight.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(bottomLeft.x + fragments[i].x, bottomLeft.y + fragments[i].y);
+        vertexCoordinateArray.addVertex(bottomRight.x + fragments[i].x, bottomRight.y + fragments[i].y);
+
+        QGLRect src(fragments[i].sourceLeft * dx, fragments[i].sourceTop * dy,
+                    (fragments[i].sourceLeft + fragments[i].width) * dx,
+                    (fragments[i].sourceTop + fragments[i].height) * dy);
+
+        textureCoordinateArray.addVertex(src.right, src.bottom);
+        textureCoordinateArray.addVertex(src.right, src.top);
+        textureCoordinateArray.addVertex(src.left, src.top);
+        textureCoordinateArray.addVertex(src.left, src.top);
+        textureCoordinateArray.addVertex(src.left, src.bottom);
+        textureCoordinateArray.addVertex(src.right, src.bottom);
+
+        qreal opacity = fragments[i].opacity * q->state()->opacity;
         opacityArray << opacity << opacity << opacity << opacity << opacity << opacity;
         allOpaque &= (opacity >= 0.99f);
     }
@@ -1474,21 +1737,22 @@ void QGL2PaintEngineExPrivate::drawPixmaps(const QDrawPixmaps::Data *drawingData
     if (texture->options & QGLContext::InvertedYBindOption) {
         // Flip texture y-coordinate.
         QGLPoint *data = textureCoordinateArray.data();
-        for (int i = 0; i < 6 * dataCount; ++i)
+        for (int i = 0; i < 6 * fragmentCount; ++i)
             data[i].y = 1 - data[i].y;
     }
 
     transferMode(ImageArrayDrawingMode);
 
     bool isBitmap = pixmap.isQBitmap();
-    bool isOpaque = !isBitmap && (!pixmap.hasAlphaChannel() || (hints & QDrawPixmaps::OpaqueHint)) && allOpaque;
+    bool isOpaque = !isBitmap && (!pixmap.hasAlphaChannel() || (hints & QPainter::OpaqueHint)) && allOpaque;
 
     updateTextureFilter(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE,
                            q->state()->renderHints & QPainter::SmoothPixmapTransform, texture->id);
 
     // Setup for texture drawing
     currentBrush = noBrush;
-    shaderManager->setSrcPixelType(isBitmap ? QGLEngineShaderManager::PatternSrc : QGLEngineShaderManager::ImageSrc);
+    shaderManager->setSrcPixelType(isBitmap ? QGLEngineShaderManager::PatternSrc
+                                            : QGLEngineShaderManager::ImageSrc);
     if (prepareForDraw(isOpaque))
         shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::ImageTexture), QT_IMAGE_TEXTURE_UNIT);
 
@@ -1497,7 +1761,7 @@ void QGL2PaintEngineExPrivate::drawPixmaps(const QDrawPixmaps::Data *drawingData
         shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::PatternColor), col);
     }
 
-    glDrawArrays(GL_TRIANGLES, 0, 6 * dataCount);
+    glDrawArrays(GL_TRIANGLES, 0, 6 * fragmentCount);
 }
 
 bool QGL2PaintEngineEx::begin(QPaintDevice *pdev)
@@ -1522,6 +1786,7 @@ bool QGL2PaintEngineEx::begin(QPaintDevice *pdev)
     d->mode = BrushDrawingMode;
     d->brushTextureDirty = true;
     d->brushUniformsDirty = true;
+    d->matrixUniformDirty = true;
     d->matrixDirty = true;
     d->compositionModeDirty = true;
     d->opacityUniformDirty = true;
@@ -1532,6 +1797,27 @@ bool QGL2PaintEngineEx::begin(QPaintDevice *pdev)
     d->dirtyStencilRegion = QRect(0, 0, d->width, d->height);
     d->stencilClean = true;
 
+    switch (pdev->devType()) {
+    case QInternal::Pixmap:
+        d->deviceHasAlpha = static_cast<QPixmap *>(pdev)->hasAlphaChannel();
+        break;
+    case QInternal::FramebufferObject:
+        {
+            GLenum f = static_cast<QGLFramebufferObject *>(pdev)->format().internalTextureFormat();
+#ifndef QT_OPENGL_ES
+            d->deviceHasAlpha = (f != GL_RGB && f != GL_RGB5 && f != GL_RGB8);
+#else
+            d->deviceHasAlpha = (f == GL_RGBA);
+#endif
+        }
+        break;
+    default:
+        // widget, pbuffer
+        d->deviceHasAlpha = d->ctx->d_func()->reqFormat.alpha();
+        break;
+    }
+
+
     // Calling begin paint should make the correct context current. So, any
     // code which calls into GL or otherwise needs a current context *must*
     // go after beginPaint:
@@ -1604,6 +1890,10 @@ bool QGL2PaintEngineEx::end()
         glDeleteBuffers(d->unusedVBOSToClean.size(), d->unusedVBOSToClean.constData());
         d->unusedVBOSToClean.clear();
     }
+    if (!d->unusedIBOSToClean.isEmpty()) {
+        glDeleteBuffers(d->unusedIBOSToClean.size(), d->unusedIBOSToClean.constData());
+        d->unusedIBOSToClean.clear();
+    }
 #endif
 
     return false;
@@ -1625,6 +1915,7 @@ void QGL2PaintEngineEx::ensureActive()
         d->transferMode(BrushDrawingMode);
         glViewport(0, 0, d->width, d->height);
         d->needsSync = false;
+        d->lastMaskTextureUsed = 0;
         d->shaderManager->setDirty();
         d->ctx->d_func()->syncGlState();
         for (int i = 0; i < 3; ++i)
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
index 8fa0eff..34d72d1 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
@@ -125,7 +125,8 @@ public:
 
     virtual void drawTexture(const QRectF &r, GLuint textureId, const QSize &size, const QRectF &sr);
     virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
-    virtual void drawPixmaps(const QDrawPixmaps::Data *drawingData, int dataCount, const QPixmap &pixmap, QDrawPixmaps::DrawingHints hints);
+    virtual void drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap,
+                                     QPainter::PixmapFragmentHints hints);
     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);
@@ -133,6 +134,7 @@ public:
     virtual void stroke(const QVectorPath &path, const QPen &pen);
     virtual void clip(const QVectorPath &path, Qt::ClipOperation op);
 
+    virtual void drawStaticTextItem(QStaticTextItem *textItem);
 
     Type type() const { return OpenGL2; }
 
@@ -173,9 +175,11 @@ public:
             width(0), height(0),
             ctx(0),
             useSystemClip(true),
+            elementIndicesVBOId(0),
             snapToPixelGrid(false),
             addOffset(false),
-            inverseScale(1)
+            inverseScale(1),
+            lastMaskTextureUsed(0)
     { }
 
     ~QGL2PaintEngineExPrivate();
@@ -193,8 +197,10 @@ public:
     void fill(const QVectorPath &path);
     void stroke(const QVectorPath &path, const QPen &pen);
     void drawTexture(const QGLRect& dest, const QGLRect& src, const QSize &textureSize, bool opaque, bool pattern = false);
-    void drawPixmaps(const QDrawPixmaps::Data *drawingData, int dataCount, const QPixmap &pixmap, QDrawPixmaps::DrawingHints hints);
-    void drawCachedGlyphs(const QPointF &p, QFontEngineGlyphCache::Type glyphType, const QTextItemInt &ti);
+    void drawPixmapFragments(const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap,
+                             QPainter::PixmapFragmentHints hints);
+    void drawCachedGlyphs(QFontEngineGlyphCache::Type glyphType, QStaticTextItem *staticTextItem,
+                          bool includeMatrixInCache);
 
     // Calls glVertexAttributePointer if the pointer has changed
     inline void setVertexAttributePointer(unsigned int arrayIndex, const GLfloat *pointer);
@@ -253,6 +259,7 @@ public:
     bool brushTextureDirty;
     bool brushUniformsDirty;
     bool opacityUniformDirty;
+    bool matrixUniformDirty;
 
     bool stencilClean; // Has the stencil not been used for clipping so far?
     bool useSystemClip;
@@ -265,6 +272,8 @@ public:
 
     QGL2PEXVertexArray vertexCoordinateArray;
     QGL2PEXVertexArray textureCoordinateArray;
+    QVector<GLushort> elementIndices;
+    GLuint elementIndicesVBOId;
     QDataBuffer<GLfloat> opacityArray;
     GLfloat staticVertexCoordinateArray[8];
     GLfloat staticTextureCoordinateArray[8];
@@ -275,9 +284,11 @@ public:
     GLfloat inverseScale;
 
     GLuint lastTextureUsed;
+    GLuint lastMaskTextureUsed;
 
     bool needsSync;
     bool multisamplingAlwaysEnabled;
+    bool deviceHasAlpha;
 
     GLfloat depthRange[2];
 
@@ -293,6 +304,7 @@ public:
 
     QSet<QVectorPath::CacheEntry *> pathCaches;
     QVector<GLuint> unusedVBOSToClean;
+    QVector<GLuint> unusedIBOSToClean;
 
     const GLfloat *vertexAttribPointers[3];
 };
diff --git a/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
index 5229d3f..d952988 100644
--- a/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
+++ b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
@@ -73,7 +73,7 @@ void QTriangulatingStroker::endCapOrJoinClosed(const qreal *start, const qreal *
 }
 
 
-void QTriangulatingStroker::process(const QVectorPath &path, const QPen &pen)
+void QTriangulatingStroker::process(const QVectorPath &path, const QPen &pen, const QRectF &)
 {
     const qreal *pts = path.points();
     const QPainterPath::ElementType *types = path.elements();
@@ -480,7 +480,7 @@ QDashedStrokeProcessor::QDashedStrokeProcessor()
     m_dash_stroker.setCubicToHook(qdashprocessor_cubicTo);
 }
 
-void QDashedStrokeProcessor::process(const QVectorPath &path, const QPen &pen)
+void QDashedStrokeProcessor::process(const QVectorPath &path, const QPen &pen, const QRectF &clip)
 {
 
     const qreal *pts = path.points();
@@ -497,6 +497,7 @@ void QDashedStrokeProcessor::process(const QVectorPath &path, const QPen &pen)
     m_dash_stroker.setDashPattern(pen.dashPattern());
     m_dash_stroker.setStrokeWidth(pen.isCosmetic() ? width * m_inv_scale : width);
     m_dash_stroker.setMiterLimit(pen.miterLimit());
+    m_dash_stroker.setClipRect(clip);
     qreal curvyness = sqrt(width) * m_inv_scale / 8;
 
     if (count < 2)
diff --git a/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h b/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h
index 06b8a44..956d7cc 100644
--- a/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h
+++ b/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h
@@ -54,7 +54,7 @@ QT_BEGIN_NAMESPACE
 class QTriangulatingStroker
 {
 public:
-    void process(const QVectorPath &path, const QPen &pen);
+    void process(const QVectorPath &path, const QPen &pen, const QRectF &clip);
 
     inline int vertexCount() const { return m_vertices.size(); }
     inline const float *vertices() const { return m_vertices.data(); }
@@ -96,7 +96,7 @@ class QDashedStrokeProcessor
 public:
     QDashedStrokeProcessor();
 
-    void process(const QVectorPath &path, const QPen &pen);
+    void process(const QVectorPath &path, const QPen &pen, const QRectF &clip);
 
     inline void addElement(QPainterPath::ElementType type, qreal x, qreal y) {
         m_points.add(x);
diff --git a/src/opengl/gl2paintengineex/qtriangulator.cpp b/src/opengl/gl2paintengineex/qtriangulator.cpp
new file mode 100644
index 0000000..ce917ff
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qtriangulator.cpp
@@ -0,0 +1,2983 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qtriangulator_p.h"
+
+#include <QtGui/qdialog.h>
+#include <QtGui/qevent.h>
+#include <QtGui/qpainter.h>
+#include <QtGui/qpainterpath.h>
+#include <QtGui/private/qbezier_p.h>
+#include <QtGui/private/qdatabuffer_p.h>
+#include <QtCore/qbitarray.h>
+#include <QtCore/qvarlengtharray.h>
+#include <QtCore/qqueue.h>
+#include <QtCore/qglobal.h>
+#include <QtCore/qpoint.h>
+#include <QtCore/qalgorithms.h>
+#include <QtDebug>
+
+#include <math.h>
+
+QT_BEGIN_NAMESPACE
+
+//#define Q_TRIANGULATOR_DEBUG
+
+#define Q_FIXED_POINT_SCALE 32
+
+// Quick sort.
+template <class T, class LessThan>
+static void sort(T *array, int count, LessThan lessThan)
+{
+    // If the number of elements fall below some threshold, use insertion sort.
+    const int INSERTION_SORT_LIMIT = 7; // About 7 is fastest on my computer...
+    if (count <= INSERTION_SORT_LIMIT) {
+        for (int i = 1; i < count; ++i) {
+            T temp = array[i];
+            int j = i;
+            while (j > 0 && lessThan(temp, array[j - 1])) {
+                array[j] = array[j - 1];
+                --j;
+            }
+            array[j] = temp;
+        }
+        return;
+    }
+
+    int high = count - 1;
+    int low = 0;
+    int mid = high / 2;
+    if (lessThan(array[mid], array[low]))
+        qSwap(array[mid], array[low]);
+    if (lessThan(array[high], array[mid]))
+        qSwap(array[high], array[mid]);
+    if (lessThan(array[mid], array[low]))
+        qSwap(array[mid], array[low]);
+
+    --high;
+    ++low;
+    qSwap(array[mid], array[high]);
+    int pivot = high;
+    --high;
+
+    while (low <= high) {
+        while (!lessThan(array[pivot], array[low])) {
+            ++low;
+            if (low > high)
+                goto sort_loop_end;
+        }
+        while (!lessThan(array[high], array[pivot])) {
+            --high;
+            if (low > high)
+                goto sort_loop_end;
+        }
+        qSwap(array[low], array[high]);
+        ++low;
+        --high;
+    }
+sort_loop_end:
+    if (low != pivot)
+        qSwap(array[pivot], array[low]);
+    sort(array, low, lessThan);
+    sort(array + low + 1, count - low - 1, lessThan);
+}
+
+// Quick sort.
+template <class T>
+static void sort(T *array, int count)
+{
+    // If the number of elements fall below some threshold, use insertion sort.
+    const int INSERTION_SORT_LIMIT = 25; // About 25 is fastest on my computer...
+    if (count <= INSERTION_SORT_LIMIT) {
+        for (int i = 1; i < count; ++i) {
+            T temp = array[i];
+            int j = i;
+            while (j > 0 && (temp < array[j - 1])) {
+                array[j] = array[j - 1];
+                --j;
+            }
+            array[j] = temp;
+        }
+        return;
+    }
+
+    int high = count - 1;
+    int low = 0;
+    int mid = high / 2;
+    if ((array[mid] < array[low]))
+        qSwap(array[mid], array[low]);
+    if ((array[high] < array[mid]))
+        qSwap(array[high], array[mid]);
+    if ((array[mid] < array[low]))
+        qSwap(array[mid], array[low]);
+
+    --high;
+    ++low;
+    qSwap(array[mid], array[high]);
+    int pivot = high;
+    --high;
+
+    while (low <= high) {
+        while (!(array[pivot] < array[low])) {
+            ++low;
+            if (low > high)
+                goto sort_loop_end;
+        }
+        while (!(array[high] < array[pivot])) {
+            --high;
+            if (low > high)
+                goto sort_loop_end;
+        }
+        qSwap(array[low], array[high]);
+        ++low;
+        --high;
+    }
+sort_loop_end:
+    if (low != pivot)
+        qSwap(array[pivot], array[low]);
+    sort(array, low);
+    sort(array + low + 1, count - low - 1);
+}
+
+//============================================================================//
+//                                 QFraction                                  //
+//============================================================================//
+
+// Fraction must be in the range [0, 1)
+struct QFraction
+{
+    // Comparison operators must not be called on invalid fractions.
+    inline bool operator < (const QFraction &other) const;
+    inline bool operator == (const QFraction &other) const;
+    inline bool operator != (const QFraction &other) const {return !(*this == other);}
+    inline bool operator > (const QFraction &other) const {return other < *this;}
+    inline bool operator >= (const QFraction &other) const {return !(*this < other);}
+    inline bool operator <= (const QFraction &other) const {return !(*this > other);}
+
+    inline bool isValid() const {return denominator != 0;}
+
+    // numerator and denominator must not have common denominators.
+    quint64 numerator, denominator;
+};
+
+static inline quint64 gcd(quint64 x, quint64 y)
+{
+    while (y != 0) {
+        quint64 z = y;
+        y = x % y;
+        x = z;
+    }
+    return x;
+}
+
+static inline int compare(quint64 a, quint64 b)
+{
+    return (a > b) - (a < b);
+}
+
+// Compare a/b with c/d.
+// Return negative if less, 0 if equal, positive if greater.
+// a < b, c < d
+static int qCompareFractions(quint64 a, quint64 b, quint64 c, quint64 d)
+{
+    const quint64 LIMIT = Q_UINT64_C(0x100000000);
+    for (;;) {
+        // If the products 'ad' and 'bc' fit into 64 bits, they can be directly compared.
+        if (b < LIMIT && d < LIMIT)
+            return compare(a * d, b * c);
+
+        if (a == 0 || c == 0)
+            return compare(a, c);
+
+        // a/b < c/d  <=>  d/c < b/a
+        quint64 b_div_a = b / a;
+        quint64 d_div_c = d / c;
+        if (b_div_a != d_div_c)
+            return compare(d_div_c, b_div_a);
+
+        // floor(d/c) == floor(b/a)
+        // frac(d/c) < frac(b/a) ?
+        // frac(x/y) = (x%y)/y
+        d -= d_div_c * c; //d %= c;
+        b -= b_div_a * a; //b %= a;
+        qSwap(a, d);
+        qSwap(b, c);
+    }
+}
+
+// Fraction must be in the range [0, 1)
+// Assume input is valid.
+static QFraction qFraction(quint64 n, quint64 d) {
+    QFraction result;
+    if (n == 0) {
+        result.numerator = 0;
+        result.denominator = 1;
+    } else {
+        quint64 g = gcd(n, d);
+        result.numerator = n / g;
+        result.denominator = d / g;
+    }
+    return result;
+}
+
+inline bool QFraction::operator < (const QFraction &other) const
+{
+    return qCompareFractions(numerator, denominator, other.numerator, other.denominator) < 0;
+}
+
+inline bool QFraction::operator == (const QFraction &other) const
+{
+    return numerator == other.numerator && denominator == other.denominator;
+}
+
+//============================================================================//
+//                                 QPodPoint                                  //
+//============================================================================//
+
+struct QPodPoint
+{
+    inline bool operator < (const QPodPoint &other) const
+    {
+        if (y != other.y)
+            return y < other.y;
+        return x < other.x;
+    }
+
+    inline bool operator > (const QPodPoint &other) const {return other < *this;}
+    inline bool operator <= (const QPodPoint &other) const {return !(*this > other);}
+    inline bool operator >= (const QPodPoint &other) const {return !(*this < other);}
+    inline bool operator == (const QPodPoint &other) const {return x == other.x && y == other.y;}
+    inline bool operator != (const QPodPoint &other) const {return x != other.x || y != other.y;}
+
+    inline QPodPoint &operator += (const QPodPoint &other) {x += other.x; y += other.y; return *this;}
+    inline QPodPoint &operator -= (const QPodPoint &other) {x -= other.x; y -= other.y; return *this;}
+    inline QPodPoint operator + (const QPodPoint &other) const {QPodPoint result = {x + other.x, y + other.y}; return result;}
+    inline QPodPoint operator - (const QPodPoint &other) const {QPodPoint result = {x - other.x, y - other.y}; return result;}
+
+    int x;
+    int y;
+};
+
+static inline qint64 qCross(const QPodPoint &u, const QPodPoint &v)
+{
+    return qint64(u.x) * qint64(v.y) - qint64(u.y) * qint64(v.x);
+}
+
+static inline qint64 qDot(const QPodPoint &u, const QPodPoint &v)
+{
+    return qint64(u.x) * qint64(v.x) + qint64(u.y) * qint64(v.y);
+}
+
+// Return positive value if 'p' is to the right of the line 'v1'->'v2', negative if left of the
+// line and zero if exactly on the line.
+// The returned value is the z-component of the qCross product between 'v2-v1' and 'p-v1',
+// which is twice the signed area of the triangle 'p'->'v1'->'v2' (positive for CW order).
+static inline qint64 qPointDistanceFromLine(const QPodPoint &p, const QPodPoint &v1, const QPodPoint &v2)
+{
+    return qCross(v2 - v1, p - v1);
+}
+
+static inline bool qPointIsLeftOfLine(const QPodPoint &p, const QPodPoint &v1, const QPodPoint &v2)
+{
+    return qPointDistanceFromLine(p, v1, v2) < 0;
+}
+
+// Return:
+// -1 if u < v
+//  0 if u == v
+//  1 if u > v
+static int comparePoints(const QPodPoint &u, const QPodPoint &v)
+{
+    if (u.y < v.y)
+        return -1;
+    if (u.y > v.y)
+        return 1;
+    if (u.x < v.x)
+        return -1;
+    if (u.x > v.x)
+        return 1;
+    return 0;
+}
+
+//============================================================================//
+//                             QIntersectionPoint                             //
+//============================================================================//
+
+struct QIntersectionPoint
+{
+    inline bool isValid() const {return xOffset.isValid() && yOffset.isValid();}
+    QPodPoint round() const;
+    inline bool isAccurate() const {return xOffset.numerator == 0 && yOffset.numerator == 0;}
+    bool operator < (const QIntersectionPoint &other) const;
+    bool operator == (const QIntersectionPoint &other) const;
+    inline bool operator != (const QIntersectionPoint &other) const {return !(*this == other);}
+    inline bool operator > (const QIntersectionPoint &other) const {return other < *this;}
+    inline bool operator >= (const QIntersectionPoint &other) const {return !(*this < other);}
+    inline bool operator <= (const QIntersectionPoint &other) const {return !(*this > other);}
+    bool isOnLine(const QPodPoint &u, const QPodPoint &v) const;
+
+    QPodPoint upperLeft;
+    QFraction xOffset;
+    QFraction yOffset;
+};
+
+static inline QIntersectionPoint qIntersectionPoint(const QPodPoint &point)
+{
+    // upperLeft = point, xOffset = 0/1, yOffset = 0/1.
+    QIntersectionPoint p = {{point.x, point.y}, {0, 1}, {0, 1}};
+    return p;
+}
+
+static inline QIntersectionPoint qIntersectionPoint(int x, int y)
+{
+    // upperLeft = (x, y), xOffset = 0/1, yOffset = 0/1.
+    QIntersectionPoint p = {{x, y}, {0, 1}, {0, 1}};
+    return p;
+}
+
+static QIntersectionPoint qIntersectionPoint(const QPodPoint &u1, const QPodPoint &u2, const QPodPoint &v1, const QPodPoint &v2)
+{
+    QIntersectionPoint result = {{0, 0}, {0, 0}, {0, 0}};
+
+    QPodPoint u = u2 - u1;
+    QPodPoint v = v2 - v1;
+    qint64 d1 = qCross(u, v1 - u1);
+    qint64 d2 = qCross(u, v2 - u1);
+    qint64 det = d2 - d1;
+    qint64 d3 = qCross(v, u1 - v1);
+    qint64 d4 = d3 - det; //qCross(v, u2 - v1);
+
+    // Check that the math is correct.
+    Q_ASSERT(d4 == qCross(v, u2 - v1));
+
+    // The intersection point can be expressed as:
+    // v1 - v * d1/det
+    // v2 - v * d2/det
+    // u1 + u * d3/det
+    // u2 + u * d4/det
+
+    // I'm only interested in lines that are crossing, so ignore parallel lines even if they overlap.
+    if (det == 0)
+        return result;
+
+    if (det < 0) {
+        det = -det;
+        d1 = -d1;
+        d2 = -d2;
+        d3 = -d3;
+        d4 = -d4;
+    }
+
+    // I'm only interested in lines intersecting at their interior, not at their end points.
+    // The lines intersect at their interior if and only if 'd1 < 0', 'd2 > 0', 'd3 < 0' and 'd4 > 0'.
+    if (d1 >= 0 || d2 <= 0 || d3 <= 0 || d4 >= 0)
+        return result;
+
+    // Calculate the intersection point as follows:
+    // v1 - v * d1/det | v1 <= v2 (component-wise)
+    // v2 - v * d2/det | v2 < v1 (component-wise)
+
+    // Assuming 21 bits per vector component.
+    // TODO: Make code path for 31 bits per vector component.
+    if (v.x >= 0) {
+        result.upperLeft.x = v1.x + (-v.x * d1) / det;
+        result.xOffset = qFraction(quint64(-v.x * d1) % quint64(det), quint64(det));
+    } else {
+        result.upperLeft.x = v2.x + (-v.x * d2) / det;
+        result.xOffset = qFraction(quint64(-v.x * d2) % quint64(det), quint64(det));
+    }
+
+    if (v.y >= 0) {
+        result.upperLeft.y = v1.y + (-v.y * d1) / det;
+        result.yOffset = qFraction(quint64(-v.y * d1) % quint64(det), quint64(det));
+    } else {
+        result.upperLeft.y = v2.y + (-v.y * d2) / det;
+        result.yOffset = qFraction(quint64(-v.y * d2) % quint64(det), quint64(det));
+    }
+
+    Q_ASSERT(result.xOffset.isValid());
+    Q_ASSERT(result.yOffset.isValid());
+    return result;
+}
+
+QPodPoint QIntersectionPoint::round() const
+{
+    QPodPoint result = upperLeft;
+    if (2 * xOffset.numerator >= xOffset.denominator)
+        ++result.x;
+    if (2 * yOffset.numerator >= yOffset.denominator)
+        ++result.y;
+    return result;
+}
+
+bool QIntersectionPoint::operator < (const QIntersectionPoint &other) const
+{
+    if (upperLeft.y != other.upperLeft.y)
+        return upperLeft.y < other.upperLeft.y;
+    if (yOffset != other.yOffset)
+        return yOffset < other.yOffset;
+    if (upperLeft.x != other.upperLeft.x)
+        return upperLeft.x < other.upperLeft.x;
+    return xOffset < other.xOffset;
+}
+
+bool QIntersectionPoint::operator == (const QIntersectionPoint &other) const
+{
+    return upperLeft == other.upperLeft && xOffset == other.xOffset && yOffset == other.yOffset;
+}
+
+// Returns true if this point is on the infinite line passing through 'u' and 'v'.
+bool QIntersectionPoint::isOnLine(const QPodPoint &u, const QPodPoint &v) const
+{
+    // TODO: Make code path for coordinates with more than 21 bits.
+    const QPodPoint p = upperLeft - u;
+    const QPodPoint q = v - u;
+    bool isHorizontal = p.y == 0 && yOffset.numerator == 0;
+    bool isVertical = p.x == 0 && xOffset.numerator == 0;
+    if (isHorizontal && isVertical)
+        return true;
+    if (isHorizontal)
+        return q.y == 0;
+    if (q.y == 0)
+        return false;
+    if (isVertical)
+        return q.x == 0;
+    if (q.x == 0)
+        return false;
+
+    // At this point, 'p+offset' and 'q' cannot lie on the x or y axis.
+
+    if (((q.x < 0) == (q.y < 0)) != ((p.x < 0) == (p.y < 0)))
+        return false; // 'p + offset' and 'q' pass through different quadrants.
+    
+    // Move all coordinates into the first quadrant.
+    quint64 nx, ny;
+    if (p.x < 0)
+        nx = quint64(-p.x) * xOffset.denominator - xOffset.numerator;
+    else
+        nx = quint64(p.x) * xOffset.denominator + xOffset.numerator;
+    if (p.y < 0)
+        ny = quint64(-p.y) * yOffset.denominator - yOffset.numerator;
+    else
+        ny = quint64(p.y) * yOffset.denominator + yOffset.numerator;
+
+    return qFraction(quint64(qAbs(q.x)) * xOffset.denominator, quint64(qAbs(q.y)) * yOffset.denominator) == qFraction(nx, ny);
+}
+
+//============================================================================//
+//                                  QMaxHeap                                  //
+//============================================================================//
+
+template <class T>
+class QMaxHeap
+{
+public:
+    inline int size() const {return m_data.size();}
+    inline bool empty() const {return m_data.isEmpty();}
+    inline bool isEmpty() const {return m_data.isEmpty();}
+    void push(const T &x);
+    T pop();
+    inline const T &top() const {return m_data.first();}
+private:
+    static inline int parent(int i) {return (i - 1) / 2;}
+    static inline int left(int i) {return 2 * i + 1;}
+    static inline int right(int i) {return 2 * i + 2;}
+
+    QDataBuffer<T> m_data;
+};
+
+template <class T>
+void QMaxHeap<T>::push(const T &x)
+{
+    int current = m_data.size();
+    int parent = QMaxHeap::parent(current);
+    m_data.add(x);
+    while (current != 0 && m_data.at(parent) < x) {
+        m_data.at(current) = m_data.at(parent);
+        current = parent;
+        parent = QMaxHeap::parent(current);
+    }
+    m_data.at(current) = x;
+}
+
+template <class T>
+T QMaxHeap<T>::pop()
+{
+    T result = m_data.first();
+    T back = m_data.last();
+    m_data.pop_back();
+    if (!m_data.isEmpty()) {
+        int current = 0;
+        for (;;) {
+            int left = QMaxHeap::left(current);
+            int right = QMaxHeap::right(current);
+            if (left >= m_data.size())
+                break;
+            int greater = left;
+            if (right < m_data.size() && m_data.at(left) < m_data.at(right))
+                greater = right;
+            if (m_data.at(greater) < back)
+                break;
+            m_data.at(current) = m_data.at(greater);
+            current = greater;
+        }
+        m_data.at(current) = back;
+    }
+    return result;
+}
+
+//============================================================================//
+//                                  QRBTree                                   //
+//============================================================================//
+
+template <class T>
+struct QRBTree
+{
+    struct Node
+    {
+        inline Node() : parent(0), left(0), right(0), red(true) { }
+        inline ~Node() {if (left) delete left; if (right) delete right;}
+        T data;
+        Node *parent;
+        Node *left;
+        Node *right;
+        bool red;
+    };
+
+    inline QRBTree() : root(0), freeList(0) { }
+    inline ~QRBTree();
+
+    inline void clear();
+
+    void attachBefore(Node *parent, Node *child);
+    void attachAfter(Node *parent, Node *child);
+
+    inline Node *front(Node *node) const;
+    inline Node *back(Node *node) const;
+    Node *next(Node *node) const;
+    Node *previous(Node *node) const;
+
+    inline void deleteNode(Node *&node);
+    inline Node *newNode();
+
+    // Return 1 if 'left' comes after 'right', 0 if equal, and -1 otherwise.
+    // 'left' and 'right' cannot be null.
+    int order(Node *left, Node *right);
+    inline bool verify() const;
+
+private:
+    void rotateLeft(Node *node);
+    void rotateRight(Node *node);
+    void update(Node *node);
+
+    inline void attachLeft(Node *parent, Node *child);
+    inline void attachRight(Node *parent, Node *child);
+
+    int blackDepth(Node *top) const;
+    bool checkRedBlackProperty(Node *top) const;
+
+    void swapNodes(Node *n1, Node *n2);
+    void detach(Node *node);
+
+    // 'node' must be black. rebalance will reduce the depth of black nodes by one in the sibling tree.
+    void rebalance(Node *node);
+
+public:
+    Node *root;
+private:
+    Node *freeList;
+};
+
+template <class T>
+inline QRBTree<T>::~QRBTree()
+{
+    clear();
+    while (freeList) {
+        // Avoid recursively calling the destructor, as this list may become large.
+        Node *next = freeList->right;
+        freeList->right = 0;
+        delete freeList;
+        freeList = next;
+    }
+}
+
+template <class T>
+inline void QRBTree<T>::clear()
+{
+    if (root)
+        delete root;
+    root = 0;
+}
+
+template <class T>
+void QRBTree<T>::rotateLeft(Node *node)
+{
+    //   |            |      //
+    //   N            B      //
+    //  / \          / \     //
+    // A   B  --->  N   D    //
+    //    / \      / \       //
+    //   C   D    A   C      //
+
+    Node *&ref = (node->parent ? (node == node->parent->left ? node->parent->left : node->parent->right) : root);
+    ref = node->right;
+    node->right->parent = node->parent;
+
+    //   :        //
+    //   N        //
+    //  / :|      //
+    // A   B      //
+    //    / \     //
+    //   C   D    //
+
+    node->right = ref->left;
+    if (ref->left)
+        ref->left->parent = node;
+
+    //   :   |     //
+    //   N   B     //
+    //  / \ : \    //
+    // A   C   D   //
+
+    ref->left = node;
+    node->parent = ref;
+
+    //     |       //
+    //     B       //
+    //    / \      //
+    //   N   D     //
+    //  / \        //
+    // A   C       //
+}
+
+template <class T>
+void QRBTree<T>::rotateRight(Node *node)
+{
+    //     |            |        //
+    //     N            A        //
+    //    / \          / \       //
+    //   A   B  --->  C   N      //
+    //  / \              / \     //
+    // C   D            D   B    //
+
+    Node *&ref = (node->parent ? (node == node->parent->left ? node->parent->left : node->parent->right) : root);
+    ref = node->left;
+    node->left->parent = node->parent;
+
+    node->left = ref->right;
+    if (ref->right)
+        ref->right->parent = node;
+
+    ref->right = node;
+    node->parent = ref;
+}
+
+template <class T>
+void QRBTree<T>::update(Node *node) // call this after inserting a node
+{
+    for (;;) {
+        Node *parent = node->parent;
+
+        // if the node is the root, color it black
+        if (!parent) {
+            node->red = false;
+            return;
+        }
+
+        // if the parent is black, the node can be left red
+        if (!parent->red)
+            return;
+
+        // at this point, the parent is red and cannot be the root
+        Node *grandpa = parent->parent;
+        Q_ASSERT(grandpa);
+
+        Node *uncle = (parent == grandpa->left ? grandpa->right : grandpa->left);
+        if (uncle && uncle->red) {
+            // grandpa's black, parent and uncle are red.
+            // let parent and uncle be black, grandpa red and recursively update grandpa.
+            Q_ASSERT(!grandpa->red);
+            parent->red = false;
+            uncle->red = false;
+            grandpa->red = true;
+            node = grandpa;
+            continue;
+        }
+
+        // at this point, uncle is black
+        if (node == parent->right && parent == grandpa->left)
+            rotateLeft(node = parent);
+        else if (node == parent->left && parent == grandpa->right)
+            rotateRight(node = parent);
+        parent = node->parent;
+
+        if (parent == grandpa->left) {
+            rotateRight(grandpa);
+            parent->red = false;
+            grandpa->red = true;
+        } else {
+            rotateLeft(grandpa);
+            parent->red = false;
+            grandpa->red = true;
+        }
+        return;
+    }
+}
+
+template <class T>
+inline void QRBTree<T>::attachLeft(Node *parent, Node *child)
+{
+    Q_ASSERT(!parent->left);
+    parent->left = child;
+    child->parent = parent;
+    update(child);
+}
+
+template <class T>
+inline void QRBTree<T>::attachRight(Node *parent, Node *child)
+{
+    Q_ASSERT(!parent->right);
+    parent->right = child;
+    child->parent = parent;
+    update(child);
+}
+
+template <class T>
+void QRBTree<T>::attachBefore(Node *parent, Node *child)
+{
+    if (!root)
+        update(root = child);
+    else if (!parent)
+        attachRight(back(root), child);
+    else if (parent->left)
+        attachRight(back(parent->left), child);
+    else
+        attachLeft(parent, child);
+}
+
+template <class T>
+void QRBTree<T>::attachAfter(Node *parent, Node *child)
+{
+    if (!root)
+        update(root = child);
+    else if (!parent)
+        attachLeft(front(root), child);
+    else if (parent->right)
+        attachLeft(front(parent->right), child);
+    else
+        attachRight(parent, child);
+}
+
+template <class T>
+void QRBTree<T>::swapNodes(Node *n1, Node *n2)
+{
+    // Since iterators must not be invalidated, it is not sufficient to only swap the data.
+    if (n1->parent == n2) {
+        n1->parent = n2->parent;
+        n2->parent = n1;
+    } else if (n2->parent == n1) {
+        n2->parent = n1->parent;
+        n1->parent = n2;
+    } else {
+        qSwap(n1->parent, n2->parent);
+    }
+
+    qSwap(n1->left, n2->left);
+    qSwap(n1->right, n2->right);
+    qSwap(n1->red, n2->red);
+
+    if (n1->parent) {
+        if (n1->parent->left == n2)
+            n1->parent->left = n1;
+        else
+            n1->parent->right = n1;
+    } else {
+        root = n1;
+    }
+
+    if (n2->parent) {
+        if (n2->parent->left == n1)
+            n2->parent->left = n2;
+        else
+            n2->parent->right = n2;
+    } else {
+        root = n2;
+    }
+
+    if (n1->left)
+        n1->left->parent = n1;
+    if (n1->right)
+        n1->right->parent = n1;
+
+    if (n2->left)
+        n2->left->parent = n2;
+    if (n2->right)
+        n2->right->parent = n2;
+}
+
+template <class T>
+void QRBTree<T>::detach(Node *node) // call this before removing a node.
+{
+    if (node->right)
+        swapNodes(node, front(node->right));
+
+    Node *child = (node->left ? node->left : node->right);
+
+    if (!node->red) {
+        if (child && child->red)
+            child->red = false;
+        else
+            rebalance(node);
+    }
+
+    Node *&ref = (node->parent ? (node == node->parent->left ? node->parent->left : node->parent->right) : root);
+    ref = child;
+    if (child)
+        child->parent = node->parent;
+    node->left = node->right = node->parent = 0;
+}
+
+// 'node' must be black. rebalance will reduce the depth of black nodes by one in the sibling tree.
+template <class T>
+void QRBTree<T>::rebalance(Node *node)
+{
+    Q_ASSERT(!node->red);
+    for (;;) {
+        if (!node->parent)
+            return;
+
+        // at this point, node is not a parent, it is black, thus it must have a sibling.
+        Node *sibling = (node == node->parent->left ? node->parent->right : node->parent->left);
+        Q_ASSERT(sibling);
+
+        if (sibling->red) {
+            sibling->red = false;
+            node->parent->red = true;
+            if (node == node->parent->left)
+                rotateLeft(node->parent);
+            else
+                rotateRight(node->parent);
+            sibling = (node == node->parent->left ? node->parent->right : node->parent->left);
+            Q_ASSERT(sibling);
+        }
+
+        // at this point, the sibling is black.
+        Q_ASSERT(!sibling->red);
+
+        if ((!sibling->left || !sibling->left->red) && (!sibling->right || !sibling->right->red)) {
+            bool parentWasRed = node->parent->red;
+            sibling->red = true;
+            node->parent->red = false;
+            if (parentWasRed)
+                return;
+            node = node->parent;
+            continue;
+        }
+
+        // at this point, at least one of the sibling's children is red.
+
+        if (node == node->parent->left) {
+            if (!sibling->right || !sibling->right->red) {
+                Q_ASSERT(sibling->left);
+                sibling->red = true;
+                sibling->left->red = false;
+                rotateRight(sibling);
+
+                sibling = sibling->parent;
+                Q_ASSERT(sibling);
+            }
+            sibling->red = node->parent->red;
+            node->parent->red = false;
+
+            Q_ASSERT(sibling->right->red);
+            sibling->right->red = false;
+            rotateLeft(node->parent);
+        } else {
+            if (!sibling->left || !sibling->left->red) {
+                Q_ASSERT(sibling->right);
+                sibling->red = true;
+                sibling->right->red = false;
+                rotateLeft(sibling);
+
+                sibling = sibling->parent;
+                Q_ASSERT(sibling);
+            }
+            sibling->red = node->parent->red;
+            node->parent->red = false;
+
+            Q_ASSERT(sibling->left->red);
+            sibling->left->red = false;
+            rotateRight(node->parent);
+        }
+        return;
+    }
+}
+
+template <class T>
+inline typename QRBTree<T>::Node *QRBTree<T>::front(Node *node) const
+{
+    while (node->left)
+        node = node->left;
+    return node;
+}
+
+template <class T>
+inline typename QRBTree<T>::Node *QRBTree<T>::back(Node *node) const
+{
+    while (node->right)
+        node = node->right;
+    return node;
+}
+
+template <class T>
+typename QRBTree<T>::Node *QRBTree<T>::next(Node *node) const
+{
+    if (node->right)
+        return front(node->right);
+    while (node->parent && node == node->parent->right)
+        node = node->parent;
+    return node->parent;
+}
+
+template <class T>
+typename QRBTree<T>::Node *QRBTree<T>::previous(Node *node) const
+{
+    if (node->left)
+        return back(node->left);
+    while (node->parent && node == node->parent->left)
+        node = node->parent;
+    return node->parent;
+}
+
+template <class T>
+int QRBTree<T>::blackDepth(Node *top) const
+{
+    if (!top)
+        return 0;
+    int leftDepth = blackDepth(top->left);
+    int rightDepth = blackDepth(top->right);
+    if (leftDepth != rightDepth)
+        return -1;
+    if (!top->red)
+        ++leftDepth;
+    return leftDepth;
+}
+
+template <class T>
+bool QRBTree<T>::checkRedBlackProperty(Node *top) const
+{
+    if (!top)
+        return true;
+    if (top->left && !checkRedBlackProperty(top->left))
+        return false;
+    if (top->right && !checkRedBlackProperty(top->right))
+        return false;
+    return !(top->red && ((top->left && top->left->red) || (top->right && top->right->red)));
+}
+
+template <class T>
+inline bool QRBTree<T>::verify() const
+{
+    return checkRedBlackProperty(root) && blackDepth(root) != -1;
+}
+
+template <class T>
+inline void QRBTree<T>::deleteNode(Node *&node)
+{
+    Q_ASSERT(node);
+    detach(node);
+    node->right = freeList;
+    freeList = node;
+    node = 0;
+}
+
+template <class T>
+inline typename QRBTree<T>::Node *QRBTree<T>::newNode()
+{
+    if (freeList) {
+        Node *node = freeList;
+        freeList = freeList->right;
+        node->parent = node->left = node->right = 0;
+        node->red = true;
+        return node;
+    }
+    return new Node;
+}
+
+// Return 1 if 'left' comes after 'right', 0 if equal, and -1 otherwise.
+// 'left' and 'right' cannot be null.
+template <class T>
+int QRBTree<T>::order(Node *left, Node *right)
+{
+    Q_ASSERT(left && right);
+    if (left == right)
+        return 0;
+
+    QVector<Node *> leftAncestors;
+    QVector<Node *> rightAncestors;
+    while (left) {
+        leftAncestors.push_back(left);
+        left = left->parent;
+    }
+    while (right) {
+        rightAncestors.push_back(right);
+        right = right->parent;
+    }
+    Q_ASSERT(leftAncestors.back() == root && rightAncestors.back() == root);
+
+    while (!leftAncestors.empty() && !rightAncestors.empty() && leftAncestors.back() == rightAncestors.back()) {
+        leftAncestors.pop_back();
+        rightAncestors.pop_back();
+    }
+
+    if (!leftAncestors.empty())
+        return (leftAncestors.back() == leftAncestors.back()->parent->left ? -1 : 1);
+
+    if (!rightAncestors.empty())
+        return (rightAncestors.back() == rightAncestors.back()->parent->right ? -1 : 1);
+
+    // The code should never reach this point.
+    Q_ASSERT(!leftAncestors.empty() || !rightAncestors.empty());
+    return 0;
+}
+
+//============================================================================//
+//                                 QInt64Hash                                 //
+//============================================================================//
+
+// Copied from qhash.cpp
+static const uchar prime_deltas[] = {
+    0,  0,  1,  3,  1,  5,  3,  3,  1,  9,  7,  5,  3,  9, 25,  3,
+    1, 21,  3, 21,  7, 15,  9,  5,  3, 29, 15,  0,  0,  0,  0,  0
+};
+
+// Copied from qhash.cpp
+static inline int primeForNumBits(int numBits)
+{
+    return (1 << numBits) + prime_deltas[numBits];
+}
+
+static inline int primeForCount(int count)
+{
+    int low = 0;
+    int high = 32;
+    for (int i = 0; i < 5; ++i) {
+        int mid = (high + low) / 2;
+        if (count >= 1 << mid)
+            low = mid;
+        else
+            high = mid;
+    }
+    return primeForNumBits(high);
+}
+
+// Hash set of quint64s. Elements cannot be removed without clearing the
+// entire set. A value of -1 is used to mark unused entries.
+class QInt64Set
+{
+public:
+    inline QInt64Set(int capacity = 64);
+    inline ~QInt64Set() {if (m_array) delete[] m_array;}
+    inline bool isValid() const {return m_array;}
+    void insert(quint64 key);
+    bool contains(quint64 key) const;
+    inline void clear();
+private:
+    bool rehash(int capacity);
+
+    static const quint64 UNUSED;
+
+    quint64 *m_array;
+    int m_capacity;
+    int m_count;
+};
+
+const quint64 QInt64Set::UNUSED = quint64(-1);
+
+inline QInt64Set::QInt64Set(int capacity)
+{
+    m_capacity = primeForCount(capacity);
+    m_array = new quint64[m_capacity];
+    if (m_array)
+        clear();
+    else
+        m_capacity = 0;
+}
+
+bool QInt64Set::rehash(int capacity)
+{
+    quint64 *oldArray = m_array;
+    int oldCapacity = m_capacity;
+
+    m_capacity = capacity;
+    m_array = new quint64[m_capacity];
+    if (m_array) {
+        clear();
+        if (oldArray) {
+            for (int i = 0; i < oldCapacity; ++i) {
+                if (oldArray[i] != UNUSED)
+                    insert(oldArray[i]);
+            }
+            delete[] oldArray;
+        }
+        return true;
+    } else {
+        m_capacity = oldCapacity;
+        m_array = oldArray;
+        return false;
+    }
+}
+
+void QInt64Set::insert(quint64 key)
+{
+    if (m_count > 3 * m_capacity / 4)
+        rehash(primeForCount(2 * m_capacity));
+    Q_ASSERT_X(m_array, "QInt64Hash<T>::insert", "Hash set not allocated.");
+    int index = int(key % m_capacity);
+    for (int i = 0; i < m_capacity; ++i) {
+        index += i;
+        if (index >= m_capacity)
+            index -= m_capacity;
+        if (m_array[index] == key)
+            return;
+        if (m_array[index] == UNUSED) {
+            ++m_count;
+            m_array[index] = key;
+            return;
+        }
+    }
+    Q_ASSERT_X(0, "QInt64Hash<T>::insert", "Hash set full.");
+}
+
+bool QInt64Set::contains(quint64 key) const
+{
+    Q_ASSERT_X(m_array, "QInt64Hash<T>::contains", "Hash set not allocated.");
+    int index = int(key % m_capacity);
+    for (int i = 0; i < m_capacity; ++i) {
+        index += i;
+        if (index >= m_capacity)
+            index -= m_capacity;
+        if (m_array[index] == key)
+            return true;
+        if (m_array[index] == UNUSED)
+            return false;
+    }
+    return false;
+}
+
+inline void QInt64Set::clear()
+{
+    Q_ASSERT_X(m_array, "QInt64Hash<T>::clear", "Hash set not allocated.");
+    for (int i = 0; i < m_capacity; ++i)
+        m_array[i] = UNUSED;
+    m_count = 0;
+}
+
+//============================================================================//
+//                                QRingBuffer                                 //
+//============================================================================//
+
+// T must be POD.
+template <class T>
+class QRingBuffer
+{
+public:
+    inline QRingBuffer() : m_array(0), m_head(0), m_size(0), m_capacity(0) { }
+    inline ~QRingBuffer() {if (m_array) delete[] m_array;}
+    bool reallocate(int capacity);
+    inline const T &head() const {Q_ASSERT(m_size > 0); return m_array[m_head];}
+    inline const T &dequeue();
+    inline void enqueue(const T &x);
+    inline bool isEmpty() const {return m_size == 0;}
+private:
+    T *m_array;
+    int m_head;
+    int m_size;
+    int m_capacity;
+};
+
+template <class T>
+bool QRingBuffer<T>::reallocate(int capacity)
+{
+    T *oldArray = m_array;
+    m_array = new T[capacity];
+    if (m_array) {
+        if (oldArray) {
+            if (m_head + m_size > m_capacity) {
+                memcpy(m_array, oldArray + m_head, (m_capacity - m_head) * sizeof(T));
+                memcpy(m_array + (m_capacity - m_head), oldArray, (m_head + m_size - m_capacity) * sizeof(T));
+            } else {
+                memcpy(m_array, oldArray + m_head, m_size * sizeof(T));
+            }
+            delete[] oldArray;
+        }
+        m_capacity = capacity;
+        m_head = 0;
+        return true;
+    } else {
+        m_array = oldArray;
+        return false;
+    }
+}
+
+template <class T>
+inline const T &QRingBuffer<T>::dequeue()
+{
+    Q_ASSERT(m_size > 0);
+    Q_ASSERT(m_array);
+    Q_ASSERT(m_capacity >= m_size);
+    int index = m_head;
+    if (++m_head >= m_capacity)
+        m_head -= m_capacity;
+    --m_size;
+    return m_array[index];
+}
+
+template <class T>
+inline void QRingBuffer<T>::enqueue(const T &x)
+{
+    if (m_size == m_capacity)
+        reallocate(qMax(2 * m_capacity, 64));
+    int index = m_head + m_size;
+    if (index >= m_capacity)
+        index -= m_capacity;
+    m_array[index] = x;
+    ++m_size;
+}
+
+//============================================================================//
+//                               QTriangulator                                //
+//============================================================================//
+
+class QTriangulator
+{
+public:
+    typedef QVarLengthArray<int, 6> ShortArray;
+
+    //================================//
+    // QTriangulator::ComplexToSimple //
+    //================================//
+    friend class ComplexToSimple;
+    class ComplexToSimple
+    {
+    public:
+        inline ComplexToSimple(QTriangulator *parent) : m_parent(parent) { }
+        void decompose();
+    private:
+        struct Edge
+        {
+            inline int &upper() {return pointingUp ? to : from;}
+            inline int &lower() {return pointingUp ? from : to;}
+            inline int upper() const {return pointingUp ? to : from;}
+            inline int lower() const {return pointingUp ? from : to;}
+
+            QRBTree<int>::Node *node;
+            int from, to; // vertex
+            int next, previous; // edge
+            int winding;
+            bool mayIntersect;
+            bool pointingUp, originallyPointingUp;
+        };
+
+        friend class CompareEdges;
+        class CompareEdges
+        {
+        public:
+            inline CompareEdges(ComplexToSimple *parent) : m_parent(parent) { }
+            bool operator () (int i, int j) const;
+        private:
+            ComplexToSimple *m_parent;
+        };
+
+        struct Intersection
+        {
+            bool operator < (const Intersection &other) const {return other.intersectionPoint < intersectionPoint;}
+
+            QIntersectionPoint intersectionPoint;
+            int vertex;
+            int leftEdge;
+            int rightEdge;
+        };
+
+        struct Split
+        {
+            int vertex;
+            int edge;
+            bool accurate;
+        };
+
+        struct Event
+        {
+            enum Type {Upper, Lower};
+            inline bool operator < (const Event &other) const;
+
+            QPodPoint point;
+            Type type;
+            int edge;
+        };
+
+#ifdef Q_TRIANGULATOR_DEBUG
+        friend class DebugDialog;
+        friend class QTriangulator;
+        class DebugDialog : public QDialog
+        {
+        public:
+            DebugDialog(ComplexToSimple *parent, int currentVertex);
+        protected:
+            void paintEvent(QPaintEvent *);
+            void wheelEvent(QWheelEvent *);
+            void mouseMoveEvent(QMouseEvent *);
+            void mousePressEvent(QMouseEvent *);
+        private:
+            ComplexToSimple *m_parent;
+            QRectF m_window;
+            QPoint m_lastMousePos;
+            int m_vertex;
+        };
+#endif
+
+        void initEdges();
+        bool calculateIntersection(int left, int right);
+        bool edgeIsLeftOfEdge(int leftEdgeIndex, int rightEdgeIndex) const;
+        QRBTree<int>::Node *searchEdgeLeftOf(int edgeIndex) const;
+        QRBTree<int>::Node *searchEdgeLeftOf(int edgeIndex, QRBTree<int>::Node *after) const;
+        QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> bounds(const QPodPoint &point) const;
+        QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> outerBounds(const QPodPoint &point) const;
+        void splitEdgeListRange(QRBTree<int>::Node *leftmost, QRBTree<int>::Node *rightmost, int vertex, const QIntersectionPoint &intersectionPoint);
+        void reorderEdgeListRange(QRBTree<int>::Node *leftmost, QRBTree<int>::Node *rightmost);
+        void sortEdgeList(const QPodPoint eventPoint);
+        void fillPriorityQueue();
+        void calculateIntersections();
+        int splitEdge(int splitIndex);
+        bool splitEdgesAtIntersections();
+        void insertEdgeIntoVectorIfWanted(ShortArray &orderedEdges, int i);
+        void removeUnwantedEdgesAndConnect();
+        void removeUnusedPoints();
+
+        QTriangulator *m_parent;
+        QDataBuffer<Edge> m_edges;
+        QRBTree<int> m_edgeList;
+        QDataBuffer<Event> m_events;
+        QDataBuffer<Split> m_splits;
+        QMaxHeap<Intersection> m_topIntersection;
+        QInt64Set m_processedEdgePairs;
+        int m_initialPointCount;
+    };
+#ifdef Q_TRIANGULATOR_DEBUG
+    friend class ComplexToSimple::DebugDialog;
+#endif
+
+    //=================================//
+    // QTriangulator::SimpleToMonotone //
+    //=================================//
+    friend class SimpleToMonotone;
+    class SimpleToMonotone
+    {
+    public:
+        inline SimpleToMonotone(QTriangulator *parent) : m_parent(parent) { }
+        void decompose();
+    private:
+        enum VertexType {MergeVertex, EndVertex, RegularVertex, StartVertex, SplitVertex};
+
+        struct Edge
+        {
+            QRBTree<int>::Node *node;
+            int helper, twin, next, previous;
+            quint32 from, to;
+            VertexType type;
+            bool pointingUp;
+            int upper() const {return (pointingUp ? to : from);}
+            int lower() const {return (pointingUp ? from : to);}
+        };
+
+        friend class CompareVertices;
+        class CompareVertices
+        {
+        public:
+            CompareVertices(SimpleToMonotone *parent) : m_parent(parent) { }
+            bool operator () (int i, int j) const;
+        private:
+            SimpleToMonotone *m_parent;
+        };
+
+        void setupDataStructures();
+        void removeZeroLengthEdges();
+        void fillPriorityQueue();
+        bool edgeIsLeftOfEdge(int leftEdgeIndex, int rightEdgeIndex) const;
+        // Returns the rightmost edge not to the right of the given edge.
+        QRBTree<int>::Node *searchEdgeLeftOfEdge(int edgeIndex) const;
+        // Returns the rightmost edge left of the given point.
+        QRBTree<int>::Node *searchEdgeLeftOfPoint(int pointIndex) const;
+        void classifyVertex(int i);
+        void classifyVertices();
+        bool pointIsInSector(const QPodPoint &p, const QPodPoint &v1, const QPodPoint &v2, const QPodPoint &v3);
+        bool pointIsInSector(int vertex, int sector);
+        int findSector(int edge, int vertex);
+        void createDiagonal(int lower, int upper);
+        void monotoneDecomposition();
+
+        QTriangulator *m_parent;
+        QRBTree<int> m_edgeList;
+        QDataBuffer<Edge> m_edges;
+        QDataBuffer<int> m_upperVertex;
+        bool m_clockwiseOrder;
+    };
+
+    //====================================//
+    // QTriangulator::MonotoneToTriangles //
+    //====================================//
+    friend class MonotoneToTriangles;
+    class MonotoneToTriangles
+    {
+    public:
+        inline MonotoneToTriangles(QTriangulator *parent) : m_parent(parent) { }
+        void decompose();
+    private:
+        inline quint32 indices(int index) const {return m_parent->m_indices.at(index + m_first);}
+        inline int next(int index) const {return (index + 1) % m_length;}
+        inline int previous(int index) const {return (index + m_length - 1) % m_length;}
+        inline bool less(int i, int j) const {return m_parent->m_vertices.at(indices(i)) < m_parent->m_vertices.at(indices(j));}
+        inline bool leftOfEdge(int i, int j, int k) const
+        {
+            return qPointIsLeftOfLine(m_parent->m_vertices.at(indices(i)),
+                m_parent->m_vertices.at(indices(j)), m_parent->m_vertices.at(indices(k)));
+        }
+
+        QTriangulator *m_parent;
+        int m_first;
+        int m_length;
+    };
+
+    inline QTriangulator() { }
+
+    // Call this only once.
+    void initialize(const qreal *polygon, int count, uint hint, const QTransform &matrix);
+    // Call this only once.
+    void initialize(const QVectorPath &path, const QTransform &matrix, qreal lod);
+    // Call this only once.
+    void initialize(const QPainterPath &path, const QTransform &matrix, qreal lod);
+    // Call either triangulate() or polyline() only once.
+    QTriangleSet triangulate();
+    QPolylineSet polyline();
+private:
+    QDataBuffer<QPodPoint> m_vertices;
+    QVector<quint32> m_indices;
+    uint m_hint;
+};
+
+//============================================================================//
+//                               QTriangulator                                //
+//============================================================================//
+
+QTriangleSet QTriangulator::triangulate()
+{
+    for (int i = 0; i < m_vertices.size(); ++i) {
+        Q_ASSERT(qAbs(m_vertices.at(i).x) < (1 << 21));
+        Q_ASSERT(qAbs(m_vertices.at(i).y) < (1 << 21));
+    }
+
+    if (!(m_hint & (QVectorPath::OddEvenFill | QVectorPath::WindingFill)))
+        m_hint |= QVectorPath::OddEvenFill;
+
+    if (m_hint & QVectorPath::NonConvexShapeMask) {
+        ComplexToSimple c2s(this);
+        c2s.decompose();
+        SimpleToMonotone s2m(this);
+        s2m.decompose();
+    }
+    MonotoneToTriangles m2t(this);
+    m2t.decompose();
+
+    QTriangleSet result;
+    result.indices = m_indices;
+    result.vertices.resize(2 * m_vertices.size());
+    for (int i = 0; i < m_vertices.size(); ++i) {
+        result.vertices[2 * i + 0] = qreal(m_vertices.at(i).x) / Q_FIXED_POINT_SCALE;
+        result.vertices[2 * i + 1] = qreal(m_vertices.at(i).y) / Q_FIXED_POINT_SCALE;
+    }
+    return result;
+}
+
+QPolylineSet QTriangulator::polyline()
+{
+    QPolylineSet result;
+    result.indices = m_indices;
+    result.vertices.resize(2 * m_vertices.size());
+    for (int i = 0; i < m_vertices.size(); ++i) {
+        result.vertices[2 * i + 0] = qreal(m_vertices.at(i).x) / Q_FIXED_POINT_SCALE;
+        result.vertices[2 * i + 1] = qreal(m_vertices.at(i).y) / Q_FIXED_POINT_SCALE;
+    }
+    return result;
+}
+
+void QTriangulator::initialize(const qreal *polygon, int count, uint hint, const QTransform &matrix)
+{
+    m_hint = hint;
+    m_vertices.resize(count);
+    m_indices.resize(count + 1);
+    for (int i = 0; i < count; ++i) {
+        qreal x, y;
+        matrix.map(polygon[2 * i + 0], polygon[2 * i + 1], &x, &y);
+        m_vertices.at(i).x = qRound(x * Q_FIXED_POINT_SCALE);
+        m_vertices.at(i).y = qRound(y * Q_FIXED_POINT_SCALE);
+        m_indices[i] = i;
+    }
+    m_indices[count] = Q_TRIANGULATE_END_OF_POLYGON;
+}
+
+void QTriangulator::initialize(const QVectorPath &path, const QTransform &matrix, qreal lod)
+{
+    m_hint = path.hints();
+    // Curved paths will be converted to complex polygons.
+    m_hint &= ~QVectorPath::CurvedShapeMask;
+
+    const qreal *p = path.points();
+    const QPainterPath::ElementType *e = path.elements();
+    if (e) {
+        for (int i = 0; i < path.elementCount(); ++i, ++e, p += 2) {
+            switch (*e) {
+            case QPainterPath::MoveToElement:
+                if (!m_indices.isEmpty())
+                    m_indices.push_back(Q_TRIANGULATE_END_OF_POLYGON);
+                // Fall through.
+            case QPainterPath::LineToElement:
+                m_indices.push_back(quint32(m_vertices.size()));
+                m_vertices.resize(m_vertices.size() + 1);
+                qreal x, y;
+                matrix.map(p[0], p[1], &x, &y);
+                m_vertices.last().x = qRound(x * Q_FIXED_POINT_SCALE);
+                m_vertices.last().y = qRound(y * Q_FIXED_POINT_SCALE);
+                break;
+            case QPainterPath::CurveToElement:
+                {
+                    qreal pts[8];
+                    for (int i = 0; i < 4; ++i)
+                        matrix.map(p[2 * i - 2], p[2 * i - 1], &pts[2 * i + 0], &pts[2 * i + 1]);
+                    for (int i = 0; i < 8; ++i)
+                        pts[i] *= lod;
+                    QBezier bezier = QBezier::fromPoints(QPointF(pts[0], pts[1]), QPointF(pts[2], pts[3]), QPointF(pts[4], pts[5]), QPointF(pts[6], pts[7]));
+                    QPolygonF poly = bezier.toPolygon();
+                    // Skip first point, it already exists in 'm_vertices'.
+                    for (int j = 1; j < poly.size(); ++j) {
+                        m_indices.push_back(quint32(m_vertices.size()));
+                        m_vertices.resize(m_vertices.size() + 1);
+                        m_vertices.last().x = qRound(poly.at(j).x() * Q_FIXED_POINT_SCALE / lod);
+                        m_vertices.last().y = qRound(poly.at(j).y() * Q_FIXED_POINT_SCALE / lod);
+                    }
+                }
+                i += 2;
+                e += 2;
+                p += 4;
+                break;
+            default:
+                Q_ASSERT_X(0, "QTriangulator::triangulate", "Unexpected element type.");
+                break;
+            }
+        }
+    } else {
+        for (int i = 0; i < path.elementCount(); ++i, p += 2) {
+            m_indices.push_back(quint32(m_vertices.size()));
+            m_vertices.resize(m_vertices.size() + 1);
+            qreal x, y;
+            matrix.map(p[0], p[1], &x, &y);
+            m_vertices.last().x = qRound(x * Q_FIXED_POINT_SCALE);
+            m_vertices.last().y = qRound(y * Q_FIXED_POINT_SCALE);
+        }
+    }
+    m_indices.push_back(Q_TRIANGULATE_END_OF_POLYGON);
+}
+
+void QTriangulator::initialize(const QPainterPath &path, const QTransform &matrix, qreal lod)
+{
+    initialize(qtVectorPathForPath(path), matrix, lod);
+}
+
+//============================================================================//
+//                       QTriangulator::ComplexToSimple                       //
+//============================================================================//
+
+void QTriangulator::ComplexToSimple::decompose()
+{
+    m_initialPointCount = m_parent->m_vertices.size();
+    initEdges();
+    do {
+        calculateIntersections();
+    } while (splitEdgesAtIntersections());
+
+    removeUnwantedEdgesAndConnect();
+    removeUnusedPoints();
+
+    m_parent->m_indices.clear();
+    QBitArray processed(m_edges.size(), false);
+    for (int first = 0; first < m_edges.size(); ++first) {
+        // If already processed, or if unused path, skip.
+        if (processed.at(first) || m_edges.at(first).next == -1)
+            continue;
+
+        int i = first;
+        do {
+            Q_ASSERT(!processed.at(i));
+            Q_ASSERT(m_edges.at(m_edges.at(i).next).previous == i);
+            m_parent->m_indices.push_back(m_edges.at(i).from);
+            processed.setBit(i);
+            i = m_edges.at(i).next; // CCW order
+        } while (i != first);
+        m_parent->m_indices.push_back(Q_TRIANGULATE_END_OF_POLYGON);
+    }
+}
+
+void QTriangulator::ComplexToSimple::initEdges()
+{
+    // Initialize edge structure.
+    // 'next' and 'previous' are not being initialized at this point.
+    int first = 0;
+    for (int i = 0; i < m_parent->m_indices.size(); ++i) {
+        if (m_parent->m_indices.at(i) == Q_TRIANGULATE_END_OF_POLYGON) {
+            if (m_edges.size() != first)
+                m_edges.last().to = m_edges.at(first).from;
+            first = m_edges.size();
+        } else {
+            Q_ASSERT(i + 1 < m_parent->m_indices.size());
+            // {node, from, to, next, previous, winding, mayIntersect, pointingUp, originallyPointingUp}
+            Edge edge = {0, m_parent->m_indices.at(i), m_parent->m_indices.at(i + 1), -1, -1, 0, true, false, false};
+            m_edges.add(edge);
+        }
+    }
+    if (first != m_edges.size())
+        m_edges.last().to = m_edges.at(first).from;
+    for (int i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).originallyPointingUp = m_edges.at(i).pointingUp = 
+            m_parent->m_vertices.at(m_edges.at(i).to) < m_parent->m_vertices.at(m_edges.at(i).from);
+    }
+}
+
+// Return true if new intersection was found
+bool QTriangulator::ComplexToSimple::calculateIntersection(int left, int right)
+{
+    const Edge &e1 = m_edges.at(left);
+    const Edge &e2 = m_edges.at(right);
+
+    const QPodPoint &u1 = m_parent->m_vertices.at(e1.from);
+    const QPodPoint &u2 = m_parent->m_vertices.at(e1.to);
+    const QPodPoint &v1 = m_parent->m_vertices.at(e2.from);
+    const QPodPoint &v2 = m_parent->m_vertices.at(e2.to);
+    if (qMax(u1.x, u2.x) <= qMin(v1.x, v2.x))
+        return false;
+
+    quint64 key = (left > right ? (quint64(right) << 32) | quint64(left) : (quint64(left) << 32) | quint64(right));
+    if (m_processedEdgePairs.contains(key))
+        return false;
+    m_processedEdgePairs.insert(key);
+
+    Intersection intersection;
+    intersection.leftEdge = left;
+    intersection.rightEdge = right;
+    intersection.intersectionPoint = qIntersectionPoint(u1, u2, v1, v2);
+
+    if (!intersection.intersectionPoint.isValid())
+        return false;
+
+    Q_ASSERT(intersection.intersectionPoint.isOnLine(u1, u2));
+    Q_ASSERT(intersection.intersectionPoint.isOnLine(v1, v2));
+
+    intersection.vertex = m_parent->m_vertices.size();
+    m_topIntersection.push(intersection);
+    m_parent->m_vertices.add(intersection.intersectionPoint.round());
+    return true;
+}
+
+bool QTriangulator::ComplexToSimple::edgeIsLeftOfEdge(int leftEdgeIndex, int rightEdgeIndex) const
+{
+    const Edge &leftEdge = m_edges.at(leftEdgeIndex);
+    const Edge &rightEdge = m_edges.at(rightEdgeIndex);
+    const QPodPoint &u = m_parent->m_vertices.at(rightEdge.upper());
+    const QPodPoint &l = m_parent->m_vertices.at(rightEdge.lower());
+    const QPodPoint &upper = m_parent->m_vertices.at(leftEdge.upper());
+    if (upper.x < qMin(l.x, u.x))
+        return true;
+    if (upper.x > qMax(l.x, u.x))
+        return false;
+    qint64 d = qPointDistanceFromLine(upper, l, u);
+    // d < 0: left, d > 0: right, d == 0: on top
+    if (d == 0)
+        d = qPointDistanceFromLine(m_parent->m_vertices.at(leftEdge.lower()), l, u);
+    return d < 0;
+}
+
+QRBTree<int>::Node *QTriangulator::ComplexToSimple::searchEdgeLeftOf(int edgeIndex) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QRBTree<int>::Node *result = 0;
+    while (current) {
+        if (edgeIsLeftOfEdge(edgeIndex, current->data)) {
+            current = current->left;
+        } else {
+            result = current;
+            current = current->right;
+        }
+    }
+    return result;
+}
+
+QRBTree<int>::Node *QTriangulator::ComplexToSimple::searchEdgeLeftOf(int edgeIndex, QRBTree<int>::Node *after) const
+{
+    if (!m_edgeList.root)
+        return after;
+    QRBTree<int>::Node *result = after;
+    QRBTree<int>::Node *current = (after ? m_edgeList.next(after) : m_edgeList.front(m_edgeList.root));
+    while (current) {
+        if (edgeIsLeftOfEdge(edgeIndex, current->data))
+            return result;
+        result = current;
+        current = m_edgeList.next(current);
+    }
+    return result;
+}
+
+QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> QTriangulator::ComplexToSimple::bounds(const QPodPoint &point) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> result(0, 0);
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = qPointDistanceFromLine(point, v1, v2);
+        if (d == 0) {
+            result.first = result.second = current;
+            break;
+        }
+        current = (d < 0 ? current->left : current->right);
+    }
+    if (current == 0)
+        return result;
+
+    current = result.first->left;
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = qPointDistanceFromLine(point, v1, v2);
+        Q_ASSERT(d >= 0);
+        if (d == 0) {
+            result.first = current;
+            current = current->left;
+        } else {
+            current = current->right;
+        }
+    }
+
+    current = result.second->right;
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = qPointDistanceFromLine(point, v1, v2);
+        Q_ASSERT(d <= 0);
+        if (d == 0) {
+            result.second = current;
+            current = current->right;
+        } else {
+            current = current->left;
+        }
+    }
+
+    return result;
+}
+
+QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> QTriangulator::ComplexToSimple::outerBounds(const QPodPoint &point) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> result(0, 0);
+
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = qPointDistanceFromLine(point, v1, v2);
+        if (d == 0)
+            break;
+        if (d < 0) {
+            result.second = current;
+            current = current->left;
+        } else {
+            result.first = current;
+            current = current->right;
+        }
+    }
+
+    if (!current)
+        return result;
+
+    QRBTree<int>::Node *mid = current;
+
+    current = mid->left;
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = qPointDistanceFromLine(point, v1, v2);
+        Q_ASSERT(d >= 0);
+        if (d == 0) {
+            current = current->left;
+        } else {
+            result.first = current;
+            current = current->right;
+        }
+    }
+
+    current = mid->right;
+    while (current) {
+        const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = qPointDistanceFromLine(point, v1, v2);
+        Q_ASSERT(d <= 0);
+        if (d == 0) {
+            current = current->right;
+        } else {
+            result.second = current;
+            current = current->left;
+        }
+    }
+
+    return result;
+}
+
+void QTriangulator::ComplexToSimple::splitEdgeListRange(QRBTree<int>::Node *leftmost, QRBTree<int>::Node *rightmost, int vertex, const QIntersectionPoint &intersectionPoint)
+{
+    Q_ASSERT(leftmost && rightmost);
+
+    // Split.
+    for (;;) {
+        const QPodPoint &u = m_parent->m_vertices.at(m_edges.at(leftmost->data).from);
+        const QPodPoint &v = m_parent->m_vertices.at(m_edges.at(leftmost->data).to);
+        Q_ASSERT(intersectionPoint.isOnLine(u, v));
+        const Split split = {vertex, leftmost->data, intersectionPoint.isAccurate()};
+        if (intersectionPoint.xOffset.numerator != 0 || intersectionPoint.yOffset.numerator != 0 || (intersectionPoint.upperLeft != u && intersectionPoint.upperLeft != v))
+            m_splits.add(split);
+        if (leftmost == rightmost)
+            break;
+        leftmost = m_edgeList.next(leftmost);
+    }
+}
+
+
+void QTriangulator::ComplexToSimple::reorderEdgeListRange(QRBTree<int>::Node *leftmost, QRBTree<int>::Node *rightmost)
+{
+    Q_ASSERT(leftmost && rightmost);
+
+    QRBTree<int>::Node *storeLeftmost = leftmost;
+    QRBTree<int>::Node *storeRightmost = rightmost;
+
+    // Reorder.
+    while (leftmost != rightmost) {
+        Edge &left = m_edges.at(leftmost->data);
+        Edge &right = m_edges.at(rightmost->data);
+        qSwap(left.node, right.node);
+        qSwap(leftmost->data, rightmost->data);
+        leftmost = m_edgeList.next(leftmost);
+        if (leftmost == rightmost)
+            break;
+        rightmost = m_edgeList.previous(rightmost);
+    }
+
+    rightmost = m_edgeList.next(storeRightmost);
+    leftmost = m_edgeList.previous(storeLeftmost);
+    if (leftmost)
+        calculateIntersection(leftmost->data, storeLeftmost->data);
+    if (rightmost)
+        calculateIntersection(storeRightmost->data, rightmost->data);
+}
+
+void QTriangulator::ComplexToSimple::sortEdgeList(const QPodPoint eventPoint)
+{
+    QIntersectionPoint eventPoint2 = qIntersectionPoint(eventPoint);
+    while (!m_topIntersection.isEmpty() && m_topIntersection.top().intersectionPoint < eventPoint2) {
+        Intersection intersection = m_topIntersection.pop();
+
+        QIntersectionPoint currentIntersectionPoint = intersection.intersectionPoint;
+        int currentVertex = intersection.vertex;
+
+        QRBTree<int>::Node *leftmost = m_edges.at(intersection.leftEdge).node;
+        QRBTree<int>::Node *rightmost = m_edges.at(intersection.rightEdge).node;
+
+        for (;;) {
+            QRBTree<int>::Node *previous = m_edgeList.previous(leftmost);
+            if (!previous)
+                break;
+            const Edge &edge = m_edges.at(previous->data);
+            const QPodPoint &u = m_parent->m_vertices.at(edge.from);
+            const QPodPoint &v = m_parent->m_vertices.at(edge.to);
+            if (!currentIntersectionPoint.isOnLine(u, v)) {
+                Q_ASSERT(!currentIntersectionPoint.isAccurate() || qCross(currentIntersectionPoint.upperLeft - u, v - u) != 0);
+                break;
+            }
+            leftmost = previous;
+        }
+
+        for (;;) {
+            QRBTree<int>::Node *next = m_edgeList.next(rightmost);
+            if (!next)
+                break;
+            const Edge &edge = m_edges.at(next->data);
+            const QPodPoint &u = m_parent->m_vertices.at(edge.from);
+            const QPodPoint &v = m_parent->m_vertices.at(edge.to);
+            if (!currentIntersectionPoint.isOnLine(u, v)) {
+                Q_ASSERT(!currentIntersectionPoint.isAccurate() || qCross(currentIntersectionPoint.upperLeft - u, v - u) != 0);
+                break;
+            }
+            rightmost = next;
+        }
+
+        Q_ASSERT(leftmost && rightmost);
+        splitEdgeListRange(leftmost, rightmost, currentVertex, currentIntersectionPoint);
+        reorderEdgeListRange(leftmost, rightmost);
+
+        while (!m_topIntersection.isEmpty() && m_topIntersection.top().intersectionPoint <= currentIntersectionPoint)
+            m_topIntersection.pop();
+
+#ifdef Q_TRIANGULATOR_DEBUG
+        DebugDialog dialog(this, intersection.vertex);
+        dialog.exec();
+#endif
+
+    }
+}
+
+void QTriangulator::ComplexToSimple::fillPriorityQueue()
+{
+    m_events.reset();
+    m_events.reserve(m_edges.size() * 2);
+    for (int i = 0; i < m_edges.size(); ++i) {
+        Q_ASSERT(m_edges.at(i).previous == -1 && m_edges.at(i).next == -1);
+        Q_ASSERT(m_edges.at(i).node == 0);
+        Q_ASSERT(m_edges.at(i).pointingUp == m_edges.at(i).originallyPointingUp);
+        Q_ASSERT(m_edges.at(i).pointingUp == (m_parent->m_vertices.at(m_edges.at(i).to) < m_parent->m_vertices.at(m_edges.at(i).from)));
+        // Ignore zero-length edges.
+        if (m_parent->m_vertices.at(m_edges.at(i).to) != m_parent->m_vertices.at(m_edges.at(i).from)) {
+            QPodPoint upper = m_parent->m_vertices.at(m_edges.at(i).upper());
+            QPodPoint lower = m_parent->m_vertices.at(m_edges.at(i).lower());
+            Event upperEvent = {{upper.x, upper.y}, Event::Upper, i};
+            Event lowerEvent = {{lower.x, lower.y}, Event::Lower, i};
+            m_events.add(upperEvent);
+            m_events.add(lowerEvent);
+        }
+    }
+    //qSort(m_events.data(), m_events.data() + m_events.size());
+    sort(m_events.data(), m_events.size());
+}
+
+void QTriangulator::ComplexToSimple::calculateIntersections()
+{
+    fillPriorityQueue();
+
+    Q_ASSERT(m_topIntersection.empty());
+    Q_ASSERT(m_edgeList.root == 0);
+
+    // Find all intersection points.
+    while (!m_events.isEmpty()) {
+        Event event = m_events.last();
+        sortEdgeList(event.point);
+
+        // Find all edges in the edge list that contain the current vertex and mark them to be split later.
+        QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> range = bounds(event.point);
+        QRBTree<int>::Node *leftNode = range.first ? m_edgeList.previous(range.first) : 0;
+        int vertex = (event.type == Event::Upper ? m_edges.at(event.edge).upper() : m_edges.at(event.edge).lower());
+        QIntersectionPoint eventPoint = qIntersectionPoint(event.point);
+
+        if (range.first != 0) {
+            splitEdgeListRange(range.first, range.second, vertex, eventPoint);
+            reorderEdgeListRange(range.first, range.second);
+        }
+
+        // Handle the edges with start or end point in the current vertex.
+        while (!m_events.isEmpty() && m_events.last().point == event.point) {
+            event = m_events.last();
+            m_events.pop_back();
+            int i = event.edge;
+
+            if (m_edges.at(i).node) {
+                // Remove edge from edge list.
+                Q_ASSERT(event.type == Event::Lower);
+                QRBTree<int>::Node *left = m_edgeList.previous(m_edges.at(i).node);
+                QRBTree<int>::Node *right = m_edgeList.next(m_edges.at(i).node);
+                m_edgeList.deleteNode(m_edges.at(i).node);
+                if (!left || !right)
+                    continue;
+                calculateIntersection(left->data, right->data);
+            } else {
+                // Insert edge into edge list.
+                Q_ASSERT(event.type == Event::Upper);
+                QRBTree<int>::Node *left = searchEdgeLeftOf(i, leftNode);
+                m_edgeList.attachAfter(left, m_edges.at(i).node = m_edgeList.newNode());
+                m_edges.at(i).node->data = i;
+                QRBTree<int>::Node *right = m_edgeList.next(m_edges.at(i).node);
+                if (left)
+                    calculateIntersection(left->data, i);
+                if (right)
+                    calculateIntersection(i, right->data);
+            }
+        }
+        while (!m_topIntersection.isEmpty() && m_topIntersection.top().intersectionPoint <= eventPoint)
+            m_topIntersection.pop();
+#ifdef Q_TRIANGULATOR_DEBUG
+        DebugDialog dialog(this, vertex);
+        dialog.exec();
+#endif
+    }
+    m_processedEdgePairs.clear();
+}
+
+// Split an edge into two pieces at the given point.
+// The upper piece is pushed to the end of the 'm_edges' vector.
+// The lower piece replaces the old edge.
+// Return the edge whose 'from' is 'pointIndex'.
+int QTriangulator::ComplexToSimple::splitEdge(int splitIndex)
+{
+    const Split &split = m_splits.at(splitIndex);
+    Edge &lowerEdge = m_edges.at(split.edge);
+    Q_ASSERT(lowerEdge.node == 0);
+    Q_ASSERT(lowerEdge.previous == -1 && lowerEdge.next == -1);
+
+    if (lowerEdge.from == split.vertex)
+        return split.edge;
+    if (lowerEdge.to == split.vertex)
+        return lowerEdge.next;
+
+    // Check that angle >= 90 degrees.
+    //Q_ASSERT(qDot(m_points.at(m_edges.at(edgeIndex).from) - m_points.at(pointIndex),
+    //    m_points.at(m_edges.at(edgeIndex).to) - m_points.at(pointIndex)) <= 0);
+
+    Edge upperEdge = lowerEdge;
+    upperEdge.mayIntersect |= !split.accurate; // The edge may have been split before at an inaccurate split point.
+    lowerEdge.mayIntersect = !split.accurate;
+    if (lowerEdge.pointingUp) {
+        lowerEdge.to = upperEdge.from = split.vertex;
+        m_edges.add(upperEdge);
+        return m_edges.size() - 1;
+    } else {
+        lowerEdge.from = upperEdge.to = split.vertex;
+        m_edges.add(upperEdge);
+        return split.edge;
+    }
+}
+
+bool QTriangulator::ComplexToSimple::splitEdgesAtIntersections()
+{
+    for (int i = 0; i < m_edges.size(); ++i)
+        m_edges.at(i).mayIntersect = false;
+    bool checkForNewIntersections = false;
+    for (int i = 0; i < m_splits.size(); ++i) {
+        splitEdge(i);
+        checkForNewIntersections |= !m_splits.at(i).accurate;
+    }
+    for (int i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).originallyPointingUp = m_edges.at(i).pointingUp =
+            m_parent->m_vertices.at(m_edges.at(i).to) < m_parent->m_vertices.at(m_edges.at(i).from);
+    }
+    m_splits.reset();
+    return checkForNewIntersections;
+}
+
+void QTriangulator::ComplexToSimple::insertEdgeIntoVectorIfWanted(ShortArray &orderedEdges, int i)
+{
+    // Edges with zero length should not reach this part.
+    Q_ASSERT(m_parent->m_vertices.at(m_edges.at(i).from) != m_parent->m_vertices.at(m_edges.at(i).to));
+
+    // Skip edges with unwanted winding number.
+    int windingNumber = m_edges.at(i).winding;
+    if (m_edges.at(i).originallyPointingUp)
+        ++windingNumber;
+
+    // Make sure exactly one fill rule is specified.
+    Q_ASSERT(((m_parent->m_hint & QVectorPath::WindingFill) != 0) != ((m_parent->m_hint & QVectorPath::OddEvenFill) != 0));
+
+    if ((m_parent->m_hint & QVectorPath::WindingFill) && windingNumber != 0 && windingNumber != 1)
+        return;
+
+    // Skip cancelling edges.
+    if (!orderedEdges.isEmpty()) {
+        int j = orderedEdges[orderedEdges.size() - 1];
+        // If the last edge is already connected in one end, it should not be cancelled.
+        if (m_edges.at(j).next == -1 && m_edges.at(j).previous == -1
+            && (m_parent->m_vertices.at(m_edges.at(i).from) == m_parent->m_vertices.at(m_edges.at(j).to))
+            && (m_parent->m_vertices.at(m_edges.at(i).to) == m_parent->m_vertices.at(m_edges.at(j).from))) {
+            orderedEdges.removeLast();
+            return;
+        }
+    }
+    orderedEdges.append(i);
+}
+
+void QTriangulator::ComplexToSimple::removeUnwantedEdgesAndConnect()
+{
+    Q_ASSERT(m_edgeList.root == 0);
+    // Initialize priority queue.
+    fillPriorityQueue();
+
+    ShortArray orderedEdges;
+
+    while (!m_events.isEmpty()) {
+        Event event = m_events.last();
+        int edgeIndex = event.edge;
+
+        // Check that all the edges in the list crosses the current scanline
+        //if (m_edgeList.root) {
+        //    for (QRBTree<int>::Node *node = m_edgeList.front(m_edgeList.root); node; node = m_edgeList.next(node)) {
+        //        Q_ASSERT(event.point <= m_points.at(m_edges.at(node->data).lower()));
+        //    }
+        //}
+
+        orderedEdges.clear();
+        QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> b = outerBounds(event.point);
+        if (m_edgeList.root) {
+            QRBTree<int>::Node *current = (b.first ? m_edgeList.next(b.first) : m_edgeList.front(m_edgeList.root));
+            // Process edges that are going to be removed from the edge list at the current event point.
+            while (current != b.second) {
+                Q_ASSERT(current);
+                Q_ASSERT(m_edges.at(current->data).node == current);
+                Q_ASSERT(qIntersectionPoint(event.point).isOnLine(m_parent->m_vertices.at(m_edges.at(current->data).from), m_parent->m_vertices.at(m_edges.at(current->data).to)));
+                Q_ASSERT(m_parent->m_vertices.at(m_edges.at(current->data).from) == event.point || m_parent->m_vertices.at(m_edges.at(current->data).to) == event.point);
+                insertEdgeIntoVectorIfWanted(orderedEdges, current->data);
+                current = m_edgeList.next(current);
+            }
+        }
+
+        // Remove edges above the event point, insert edges below the event point.
+        do {
+            event = m_events.last();
+            m_events.pop_back();
+            edgeIndex = event.edge;
+
+            // Edges with zero length should not reach this part.
+            Q_ASSERT(m_parent->m_vertices.at(m_edges.at(edgeIndex).from) != m_parent->m_vertices.at(m_edges.at(edgeIndex).to));
+
+            if (m_edges.at(edgeIndex).node) {
+                Q_ASSERT(event.type == Event::Lower);
+                Q_ASSERT(event.point == m_parent->m_vertices.at(m_edges.at(event.edge).lower()));
+                m_edgeList.deleteNode(m_edges.at(edgeIndex).node);
+            } else {
+                Q_ASSERT(event.type == Event::Upper);
+                Q_ASSERT(event.point == m_parent->m_vertices.at(m_edges.at(event.edge).upper()));
+                QRBTree<int>::Node *left = searchEdgeLeftOf(edgeIndex, b.first);
+                m_edgeList.attachAfter(left, m_edges.at(edgeIndex).node = m_edgeList.newNode());
+                m_edges.at(edgeIndex).node->data = edgeIndex;
+            }
+        } while (!m_events.isEmpty() && m_events.last().point == event.point);
+
+        if (m_edgeList.root) {
+            QRBTree<int>::Node *current = (b.first ? m_edgeList.next(b.first) : m_edgeList.front(m_edgeList.root));
+
+            // Calculate winding number and turn counter-clockwise.
+            int currentWindingNumber = (b.first ? m_edges.at(b.first->data).winding : 0);
+            while (current != b.second) {
+                Q_ASSERT(current);
+                //Q_ASSERT(b.second == 0 || m_edgeList.order(current, b.second) < 0);
+                int i = current->data;
+                Q_ASSERT(m_edges.at(i).node == current);
+
+                // Winding number.
+                int ccwWindingNumber = m_edges.at(i).winding = currentWindingNumber;
+                if (m_edges.at(i).originallyPointingUp) {
+                    --m_edges.at(i).winding;
+                } else {
+                    ++m_edges.at(i).winding;
+                    ++ccwWindingNumber;
+                }
+                currentWindingNumber = m_edges.at(i).winding;
+
+                // Turn counter-clockwise.
+                if ((ccwWindingNumber & 1) == 0) {
+                    Q_ASSERT(m_edges.at(i).previous == -1 && m_edges.at(i).next == -1);
+                    qSwap(m_edges.at(i).from, m_edges.at(i).to);
+                    m_edges.at(i).pointingUp = !m_edges.at(i).pointingUp;
+                }
+
+                current = m_edgeList.next(current);
+            }
+
+            // Process edges that were inserted into the edge list at the current event point.
+            current = (b.second ? m_edgeList.previous(b.second) : m_edgeList.back(m_edgeList.root));
+            while (current != b.first) {
+                Q_ASSERT(current);
+                Q_ASSERT(m_edges.at(current->data).node == current);
+                insertEdgeIntoVectorIfWanted(orderedEdges, current->data);
+                current = m_edgeList.previous(current);
+            }
+        }
+        if (orderedEdges.isEmpty())
+            continue;
+
+        Q_ASSERT((orderedEdges.size() & 1) == 0);
+
+        // Connect edges.
+        // First make sure the first edge point towards the current point.
+        int i;
+        if (m_parent->m_vertices.at(m_edges.at(orderedEdges[0]).from) == event.point) {
+            i = 1;
+            int copy = orderedEdges[0]; // Make copy in case the append() will cause a reallocation.
+            orderedEdges.append(copy);
+        } else {
+            Q_ASSERT(m_parent->m_vertices.at(m_edges.at(orderedEdges[0]).to) == event.point);
+            i = 0;
+        }
+
+        // Remove references to duplicate points. First find the point with lowest index.
+        int pointIndex = INT_MAX;
+        for (int j = i; j < orderedEdges.size(); j += 2) {
+            Q_ASSERT(j + 1 < orderedEdges.size());
+            Q_ASSERT(m_parent->m_vertices.at(m_edges.at(orderedEdges[j]).to) == event.point);
+            Q_ASSERT(m_parent->m_vertices.at(m_edges.at(orderedEdges[j + 1]).from) == event.point);
+            if (m_edges.at(orderedEdges[j]).to < pointIndex)
+                pointIndex = m_edges.at(orderedEdges[j]).to;
+            if (m_edges.at(orderedEdges[j + 1]).from < pointIndex)
+                pointIndex = m_edges.at(orderedEdges[j + 1]).from;
+        }
+
+        for (; i < orderedEdges.size(); i += 2) {
+            // Remove references to duplicate points by making all edges reference one common point.
+            m_edges.at(orderedEdges[i]).to = m_edges.at(orderedEdges[i + 1]).from = pointIndex;
+
+            Q_ASSERT(m_edges.at(orderedEdges[i]).pointingUp || m_edges.at(orderedEdges[i]).previous != -1);
+            Q_ASSERT(!m_edges.at(orderedEdges[i + 1]).pointingUp || m_edges.at(orderedEdges[i + 1]).next != -1);
+
+            m_edges.at(orderedEdges[i]).next = orderedEdges[i + 1];
+            m_edges.at(orderedEdges[i + 1]).previous = orderedEdges[i];
+        }
+    } // end while
+}
+
+void QTriangulator::ComplexToSimple::removeUnusedPoints() {
+    QBitArray used(m_parent->m_vertices.size(), false);
+    for (int i = 0; i < m_edges.size(); ++i) {
+        Q_ASSERT((m_edges.at(i).previous == -1) == (m_edges.at(i).next == -1));
+        if (m_edges.at(i).next != -1)
+            used.setBit(m_edges.at(i).from);
+    }
+    QDataBuffer<quint32> newMapping(m_parent->m_vertices.size());
+    newMapping.resize(m_parent->m_vertices.size());
+    int count = 0;
+    for (int i = 0; i < m_parent->m_vertices.size(); ++i) {
+        if (used.at(i)) {
+            m_parent->m_vertices.at(count) = m_parent->m_vertices.at(i);
+            newMapping.at(i) = count;
+            ++count;
+        }
+    }
+    m_parent->m_vertices.resize(count);
+    for (int i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).from = newMapping.at(m_edges.at(i).from);
+        m_edges.at(i).to = newMapping.at(m_edges.at(i).to);
+    }
+}
+
+bool QTriangulator::ComplexToSimple::CompareEdges::operator () (int i, int j) const
+{
+    int cmp = comparePoints(m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(i).from),
+        m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(j).from));
+    if (cmp == 0) {
+        cmp = comparePoints(m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(i).to),
+            m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(j).to));
+    }
+    return cmp > 0;
+}
+
+inline bool QTriangulator::ComplexToSimple::Event::operator < (const Event &other) const
+{
+    if (point == other.point)
+        return type < other.type; // 'Lower' has higher priority than 'Upper'.
+    return other.point < point;
+}
+
+//============================================================================//
+//                QTriangulator::ComplexToSimple::DebugDialog                 //
+//============================================================================//
+
+#ifdef Q_TRIANGULATOR_DEBUG
+
+QTriangulator::ComplexToSimple::DebugDialog::DebugDialog(ComplexToSimple *parent, int currentVertex)
+    : m_parent(parent), m_vertex(currentVertex)
+{
+    QDataBuffer<QPodPoint> &vertices = m_parent->m_parent->m_vertices;
+    if (vertices.isEmpty())
+        return;
+    
+    int minX, maxX, minY, maxY;
+    minX = maxX = vertices.at(0).x;
+    minY = maxY = vertices.at(0).y;
+    for (int i = 1; i < vertices.size(); ++i) {
+        minX = qMin(minX, vertices.at(i).x);
+        maxX = qMax(maxX, vertices.at(i).x);
+        minY = qMin(minY, vertices.at(i).y);
+        maxY = qMax(maxY, vertices.at(i).y);
+    }
+    int w = maxX - minX;
+    int h = maxY - minY;
+    qreal border = qMin(w, h) / 10.0;
+    m_window = QRectF(minX - border, minY - border, (maxX - minX + 2 * border), (maxY - minY + 2 * border));
+}
+
+void QTriangulator::ComplexToSimple::DebugDialog::paintEvent(QPaintEvent *)
+{
+    QPainter p(this);
+    p.setRenderHint(QPainter::Antialiasing, true);
+    p.fillRect(rect(), Qt::black);
+    QDataBuffer<QPodPoint> &vertices = m_parent->m_parent->m_vertices;
+    if (vertices.isEmpty())
+        return;
+    
+    qreal halfPointSize = qMin(m_window.width(), m_window.height()) / 300.0;
+    p.setWindow(m_window.toRect());
+
+    p.setPen(Qt::white);
+
+    QDataBuffer<Edge> &edges = m_parent->m_edges;
+    for (int i = 0; i < edges.size(); ++i) {
+        QPodPoint u = vertices.at(edges.at(i).from);
+        QPodPoint v = vertices.at(edges.at(i).to);
+        p.drawLine(u.x, u.y, v.x, v.y);
+    }
+
+    for (int i = 0; i < vertices.size(); ++i) {
+        QPodPoint q = vertices.at(i);
+        p.fillRect(QRectF(q.x - halfPointSize, q.y - halfPointSize, 2 * halfPointSize, 2 * halfPointSize), Qt::red);
+    }
+
+    Qt::GlobalColor colors[6] = {Qt::red, Qt::green, Qt::blue, Qt::cyan, Qt::magenta, Qt::yellow};
+    p.setOpacity(0.5);
+    int count = 0;
+    if (m_parent->m_edgeList.root) {
+        QRBTree<int>::Node *current = m_parent->m_edgeList.front(m_parent->m_edgeList.root);
+        while (current) {
+            p.setPen(colors[count++ % 6]);
+            QPodPoint u = vertices.at(edges.at(current->data).from);
+            QPodPoint v = vertices.at(edges.at(current->data).to);
+            p.drawLine(u.x, u.y, v.x, v.y);
+            current = m_parent->m_edgeList.next(current);
+        }
+    }
+
+    p.setOpacity(1.0);
+    QPodPoint q = vertices.at(m_vertex);
+    p.fillRect(QRectF(q.x - halfPointSize, q.y - halfPointSize, 2 * halfPointSize, 2 * halfPointSize), Qt::green);
+
+    p.setPen(Qt::gray);
+    QDataBuffer<Split> &splits = m_parent->m_splits;
+    for (int i = 0; i < splits.size(); ++i) {
+        QPodPoint q = vertices.at(splits.at(i).vertex);
+        QPodPoint u = vertices.at(edges.at(splits.at(i).edge).from) - q;
+        QPodPoint v = vertices.at(edges.at(splits.at(i).edge).to) - q;
+        qreal uLen = sqrt(qreal(qDot(u, u)));
+        qreal vLen = sqrt(qreal(qDot(v, v)));
+        if (uLen) {
+            u.x *= 2 * halfPointSize / uLen;
+            u.y *= 2 * halfPointSize / uLen;
+        }
+        if (vLen) {
+            v.x *= 2 * halfPointSize / vLen;
+            v.y *= 2 * halfPointSize / vLen;
+        }
+        u += q;
+        v += q;
+        p.drawLine(u.x, u.y, v.x, v.y);        
+    }
+}
+
+void QTriangulator::ComplexToSimple::DebugDialog::wheelEvent(QWheelEvent *event)
+{
+    qreal scale = exp(-0.001 * event->delta());
+    QPointF center = m_window.center();
+    QPointF delta = scale * (m_window.bottomRight() - center);
+    m_window = QRectF(center - delta, center + delta);
+    event->accept();
+    update();
+}
+
+void QTriangulator::ComplexToSimple::DebugDialog::mouseMoveEvent(QMouseEvent *event)
+{
+    if (event->buttons() & Qt::LeftButton) {
+        QPointF delta = event->pos() - m_lastMousePos;
+        delta.setX(delta.x() * m_window.width() / width());
+        delta.setY(delta.y() * m_window.height() / height());
+        m_window.translate(-delta.x(), -delta.y());
+        m_lastMousePos = event->pos();
+        event->accept();
+        update();
+    }
+}
+
+void QTriangulator::ComplexToSimple::DebugDialog::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton)
+        m_lastMousePos = event->pos();
+    event->accept();
+}
+
+
+#endif
+
+//============================================================================//
+//                      QTriangulator::SimpleToMonotone                       //
+//============================================================================//
+
+void QTriangulator::SimpleToMonotone::decompose()
+{
+    setupDataStructures();
+    removeZeroLengthEdges();
+    monotoneDecomposition();
+
+    m_parent->m_indices.clear();
+    QBitArray processed(m_edges.size(), false);
+    for (int first = 0; first < m_edges.size(); ++first) {
+        if (processed.at(first))
+            continue;
+        int i = first;
+        do {
+            Q_ASSERT(!processed.at(i));
+            Q_ASSERT(m_edges.at(m_edges.at(i).next).previous == i);
+            m_parent->m_indices.push_back(m_edges.at(i).from);
+            processed.setBit(i);
+            i = m_edges.at(i).next;
+        } while (i != first);
+        if (m_parent->m_indices.size() > 0 && m_parent->m_indices.back() != Q_TRIANGULATE_END_OF_POLYGON)
+            m_parent->m_indices.push_back(Q_TRIANGULATE_END_OF_POLYGON);
+    }
+}
+
+void QTriangulator::SimpleToMonotone::setupDataStructures()
+{
+    int i = 0;
+    Edge e;
+    e.node = 0;
+    e.twin = -1;
+
+    while (i + 3 <= m_parent->m_indices.size()) {
+        int start = m_edges.size();
+
+        do {
+            e.from = m_parent->m_indices.at(i);
+            e.type = RegularVertex;
+            e.next = m_edges.size() + 1;
+            e.previous = m_edges.size() - 1;
+            m_edges.add(e);
+            ++i;
+            Q_ASSERT(i < m_parent->m_indices.size());
+        } while (m_parent->m_indices.at(i) != Q_TRIANGULATE_END_OF_POLYGON);
+
+        m_edges.last().next = start;
+        m_edges.at(start).previous = m_edges.size() - 1;
+        ++i; // Skip Q_TRIANGULATE_END_OF_POLYGON.
+    }
+
+    for (i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).to = m_edges.at(m_edges.at(i).next).from;
+        m_edges.at(i).pointingUp = m_parent->m_vertices.at(m_edges.at(i).to) < m_parent->m_vertices.at(m_edges.at(i).from);
+        m_edges.at(i).helper = -1; // Not initialized here.
+    }
+}
+
+void QTriangulator::SimpleToMonotone::removeZeroLengthEdges()
+{
+    for (int i = 0; i < m_edges.size(); ++i) {
+        if (m_parent->m_vertices.at(m_edges.at(i).from) == m_parent->m_vertices.at(m_edges.at(i).to)) {
+            m_edges.at(m_edges.at(i).previous).next = m_edges.at(i).next;
+            m_edges.at(m_edges.at(i).next).previous = m_edges.at(i).previous;
+            m_edges.at(m_edges.at(i).next).from = m_edges.at(i).from;
+            m_edges.at(i).next = -1; // Mark as removed.
+        }
+    }
+
+    QDataBuffer<int> newMapping(m_edges.size());
+    newMapping.resize(m_edges.size());
+    int count = 0;
+    for (int i = 0; i < m_edges.size(); ++i) {
+        if (m_edges.at(i).next != -1) {
+            m_edges.at(count) = m_edges.at(i);
+            newMapping.at(i) = count;
+            ++count;
+        }
+    }
+    m_edges.resize(count);
+    for (int i = 0; i < m_edges.size(); ++i) {
+        m_edges.at(i).next = newMapping.at(m_edges.at(i).next);
+        m_edges.at(i).previous = newMapping.at(m_edges.at(i).previous);
+    }
+}
+
+void QTriangulator::SimpleToMonotone::fillPriorityQueue()
+{
+    m_upperVertex.reset();
+    m_upperVertex.reserve(m_edges.size());
+    for (int i = 0; i < m_edges.size(); ++i)
+        m_upperVertex.add(i);
+    CompareVertices cmp(this);
+    //qSort(m_upperVertex.data(), m_upperVertex.data() + m_upperVertex.size(), cmp);
+    sort(m_upperVertex.data(), m_upperVertex.size(), cmp);
+    //for (int i = 1; i < m_upperVertex.size(); ++i) {
+    //    Q_ASSERT(!cmp(m_upperVertex.at(i), m_upperVertex.at(i - 1)));
+    //}
+}
+
+bool QTriangulator::SimpleToMonotone::edgeIsLeftOfEdge(int leftEdgeIndex, int rightEdgeIndex) const
+{
+    const Edge &leftEdge = m_edges.at(leftEdgeIndex);
+    const Edge &rightEdge = m_edges.at(rightEdgeIndex);
+    const QPodPoint &u = m_parent->m_vertices.at(rightEdge.upper());
+    const QPodPoint &l = m_parent->m_vertices.at(rightEdge.lower());
+    qint64 d = qPointDistanceFromLine(m_parent->m_vertices.at(leftEdge.upper()), l, u);
+    // d < 0: left, d > 0: right, d == 0: on top
+    if (d == 0)
+        d = qPointDistanceFromLine(m_parent->m_vertices.at(leftEdge.lower()), l, u);
+    return d < 0;
+}
+
+// Returns the rightmost edge not to the right of the given edge.
+QRBTree<int>::Node *QTriangulator::SimpleToMonotone::searchEdgeLeftOfEdge(int edgeIndex) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QRBTree<int>::Node *result = 0;
+    while (current) {
+        if (edgeIsLeftOfEdge(edgeIndex, current->data)) {
+            current = current->left;
+        } else {
+            result = current;
+            current = current->right;
+        }
+    }
+    return result;
+}
+
+// Returns the rightmost edge left of the given point.
+QRBTree<int>::Node *QTriangulator::SimpleToMonotone::searchEdgeLeftOfPoint(int pointIndex) const
+{
+    QRBTree<int>::Node *current = m_edgeList.root;
+    QRBTree<int>::Node *result = 0;
+    while (current) {
+        const QPodPoint &p1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
+        const QPodPoint &p2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
+        qint64 d = qPointDistanceFromLine(m_parent->m_vertices.at(pointIndex), p1, p2);
+        if (d <= 0) {
+            current = current->left;
+        } else {
+            result = current;
+            current = current->right;
+        }
+    }
+    return result;
+}
+
+void QTriangulator::SimpleToMonotone::classifyVertex(int i)
+{
+    Edge &e2 = m_edges.at(i);
+    const Edge &e1 = m_edges.at(e2.previous);
+
+    bool startOrSplit = (e1.pointingUp && !e2.pointingUp);
+    bool endOrMerge = (!e1.pointingUp && e2.pointingUp);
+
+    const QPodPoint &p1 = m_parent->m_vertices.at(e1.from);
+    const QPodPoint &p2 = m_parent->m_vertices.at(e2.from);
+    const QPodPoint &p3 = m_parent->m_vertices.at(e2.to);
+    qint64 d = qPointDistanceFromLine(p1, p2, p3);
+    Q_ASSERT(d != 0 || (!startOrSplit && !endOrMerge));
+
+    e2.type = RegularVertex;
+
+    if (m_clockwiseOrder) {
+        if (startOrSplit)
+            e2.type = (d < 0 ? SplitVertex : StartVertex);
+        else if (endOrMerge)
+            e2.type = (d < 0 ? MergeVertex : EndVertex);
+    } else {
+        if (startOrSplit)
+            e2.type = (d > 0 ? SplitVertex : StartVertex);
+        else if (endOrMerge)
+            e2.type = (d > 0 ? MergeVertex : EndVertex);
+    }
+}
+
+void QTriangulator::SimpleToMonotone::classifyVertices()
+{
+    for (int i = 0; i < m_edges.size(); ++i)
+        classifyVertex(i);
+}
+
+bool QTriangulator::SimpleToMonotone::pointIsInSector(const QPodPoint &p, const QPodPoint &v1, const QPodPoint &v2, const QPodPoint &v3)
+{
+    bool leftOfPreviousEdge = !qPointIsLeftOfLine(p, v2, v1);
+    bool leftOfNextEdge = !qPointIsLeftOfLine(p, v3, v2);
+
+    if (qPointIsLeftOfLine(v1, v2, v3))
+        return leftOfPreviousEdge && leftOfNextEdge;
+    else
+        return leftOfPreviousEdge || leftOfNextEdge;
+}
+
+bool QTriangulator::SimpleToMonotone::pointIsInSector(int vertex, int sector)
+{
+    const QPodPoint &center = m_parent->m_vertices.at(m_edges.at(sector).from);
+    // Handle degenerate edges.
+    while (m_parent->m_vertices.at(m_edges.at(vertex).from) == center)
+        vertex = m_edges.at(vertex).next;
+    int next = m_edges.at(sector).next;
+    while (m_parent->m_vertices.at(m_edges.at(next).from) == center)
+        next = m_edges.at(next).next;
+    int previous = m_edges.at(sector).previous;
+    while (m_parent->m_vertices.at(m_edges.at(previous).from) == center)
+        previous = m_edges.at(previous).previous;
+
+    const QPodPoint &p = m_parent->m_vertices.at(m_edges.at(vertex).from);
+    const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(previous).from);
+    const QPodPoint &v3 = m_parent->m_vertices.at(m_edges.at(next).from);
+    if (m_clockwiseOrder)
+        return pointIsInSector(p, v3, center, v1);
+    else
+        return pointIsInSector(p, v1, center, v3);
+}
+
+int QTriangulator::SimpleToMonotone::findSector(int edge, int vertex)
+{
+    while (!pointIsInSector(vertex, edge)) {
+        edge = m_edges.at(m_edges.at(edge).previous).twin;
+        Q_ASSERT(edge != -1);
+    }
+    return edge;
+}
+
+void QTriangulator::SimpleToMonotone::createDiagonal(int lower, int upper)
+{
+    lower = findSector(lower, upper);
+    upper = findSector(upper, lower);
+
+    int prevLower = m_edges.at(lower).previous;
+    int prevUpper = m_edges.at(upper).previous;
+
+    Edge e;
+
+    e.twin = m_edges.size() + 1;
+    e.next = upper;
+    e.previous = prevLower;
+    e.from = m_edges.at(lower).from;
+    e.to = m_edges.at(upper).from;
+    m_edges.at(upper).previous = m_edges.at(prevLower).next = int(m_edges.size());
+    m_edges.add(e);
+
+    e.twin = m_edges.size() - 1;
+    e.next = lower;
+    e.previous = prevUpper;
+    e.from = m_edges.at(upper).from;
+    e.to = m_edges.at(lower).from;
+    m_edges.at(lower).previous = m_edges.at(prevUpper).next = int(m_edges.size());
+    m_edges.add(e);
+}
+
+void QTriangulator::SimpleToMonotone::monotoneDecomposition()
+{
+    if (m_edges.isEmpty())
+        return;
+
+    Q_ASSERT(!m_edgeList.root);
+    QDataBuffer<QPair<int, int> > diagonals;
+
+    int i = 0;
+    for (int index = 1; index < m_edges.size(); ++index) {
+        if (m_parent->m_vertices.at(m_edges.at(index).from) < m_parent->m_vertices.at(m_edges.at(i).from))
+            i = index;
+    }
+    Q_ASSERT(i < m_edges.size());
+    int j = m_edges.at(i).previous;
+    Q_ASSERT(j < m_edges.size());
+    m_clockwiseOrder = qPointIsLeftOfLine(m_parent->m_vertices.at(m_edges.at(i).from),
+        m_parent->m_vertices.at(m_edges.at(j).from), m_parent->m_vertices.at(m_edges.at(i).to));
+
+    classifyVertices();
+    fillPriorityQueue();
+
+    // debug: set helpers explicitly (shouldn't be necessary)
+    //for (int i = 0; i < m_edges.size(); ++i)
+    //    m_edges.at(i).helper = m_edges.at(i).upper();
+
+    while (!m_upperVertex.isEmpty()) {
+        i = m_upperVertex.last();
+        Q_ASSERT(i < m_edges.size());
+        m_upperVertex.pop_back();
+        j = m_edges.at(i).previous;
+        Q_ASSERT(j < m_edges.size());
+
+        QRBTree<int>::Node *leftEdgeNode = 0;
+
+        switch (m_edges.at(i).type) {
+        case RegularVertex:
+            // If polygon interior is to the right of the vertex...
+            if (m_edges.at(i).pointingUp == m_clockwiseOrder) {
+                if (m_edges.at(i).node) {
+                    Q_ASSERT(!m_edges.at(j).node);
+                    if (m_edges.at(m_edges.at(i).helper).type == MergeVertex)
+                        diagonals.add(QPair<int, int>(i, m_edges.at(i).helper));
+                    m_edges.at(j).node = m_edges.at(i).node;
+                    m_edges.at(i).node = 0;
+                    m_edges.at(j).node->data = j;
+                    m_edges.at(j).helper = i;
+                } else if (m_edges.at(j).node) {
+                    Q_ASSERT(!m_edges.at(i).node);
+                    if (m_edges.at(m_edges.at(j).helper).type == MergeVertex)
+                        diagonals.add(QPair<int, int>(i, m_edges.at(j).helper));
+                    m_edges.at(i).node = m_edges.at(j).node;
+                    m_edges.at(j).node = 0;
+                    m_edges.at(i).node->data = i;
+                    m_edges.at(i).helper = i;
+                } else {
+                    qWarning("Inconsistent polygon. (#1)");
+                }
+            } else {
+                leftEdgeNode = searchEdgeLeftOfPoint(m_edges.at(i).from);
+                if (leftEdgeNode) {
+                    if (m_edges.at(m_edges.at(leftEdgeNode->data).helper).type == MergeVertex)
+                        diagonals.add(QPair<int, int>(i, m_edges.at(leftEdgeNode->data).helper));
+                    m_edges.at(leftEdgeNode->data).helper = i;
+                } else {
+                    qWarning("Inconsistent polygon. (#2)");
+                }
+            }
+            break;
+        case SplitVertex:
+            leftEdgeNode = searchEdgeLeftOfPoint(m_edges.at(i).from);
+            if (leftEdgeNode) {
+                diagonals.add(QPair<int, int>(i, m_edges.at(leftEdgeNode->data).helper));
+                m_edges.at(leftEdgeNode->data).helper = i;
+            } else {
+                qWarning("Inconsistent polygon. (#3)");
+            }
+            // Fall through.
+        case StartVertex:
+            if (m_clockwiseOrder) {
+                leftEdgeNode = searchEdgeLeftOfEdge(j);
+                QRBTree<int>::Node *node = m_edgeList.newNode();
+                node->data = j;
+                m_edges.at(j).node = node;
+                m_edges.at(j).helper = i;
+                m_edgeList.attachAfter(leftEdgeNode, node);
+                Q_ASSERT(m_edgeList.verify());
+            } else  {
+                leftEdgeNode = searchEdgeLeftOfEdge(i);
+                QRBTree<int>::Node *node = m_edgeList.newNode();
+                node->data = i;
+                m_edges.at(i).node = node;
+                m_edges.at(i).helper = i;
+                m_edgeList.attachAfter(leftEdgeNode, node);
+                Q_ASSERT(m_edgeList.verify());
+            }
+            break;
+        case MergeVertex:
+            leftEdgeNode = searchEdgeLeftOfPoint(m_edges.at(i).from);
+            if (leftEdgeNode) {
+                if (m_edges.at(m_edges.at(leftEdgeNode->data).helper).type == MergeVertex)
+                    diagonals.add(QPair<int, int>(i, m_edges.at(leftEdgeNode->data).helper));
+                m_edges.at(leftEdgeNode->data).helper = i;
+            } else {
+                qWarning("Inconsistent polygon. (#4)");
+            }
+            // Fall through.
+        case EndVertex:
+            if (m_clockwiseOrder) {
+                if (m_edges.at(m_edges.at(i).helper).type == MergeVertex)
+                    diagonals.add(QPair<int, int>(i, m_edges.at(i).helper));
+                if (m_edges.at(i).node) {
+                    m_edgeList.deleteNode(m_edges.at(i).node);
+                    Q_ASSERT(m_edgeList.verify());
+                } else {
+                    qWarning("Inconsistent polygon. (#5)");
+                }
+            } else {
+                if (m_edges.at(m_edges.at(j).helper).type == MergeVertex)
+                    diagonals.add(QPair<int, int>(i, m_edges.at(j).helper));
+                if (m_edges.at(j).node) {
+                    m_edgeList.deleteNode(m_edges.at(j).node);
+                    Q_ASSERT(m_edgeList.verify());
+                } else {
+                    qWarning("Inconsistent polygon. (#6)");
+                }
+            }
+            break;
+        }
+    }
+
+    for (int i = 0; i < diagonals.size(); ++i)
+        createDiagonal(diagonals.at(i).first, diagonals.at(i).second);
+}
+
+bool QTriangulator::SimpleToMonotone::CompareVertices::operator () (int i, int j) const
+{
+    if (m_parent->m_edges.at(i).from == m_parent->m_edges.at(j).from)
+        return m_parent->m_edges.at(i).type > m_parent->m_edges.at(j).type;
+    return m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(i).from) >
+        m_parent->m_parent->m_vertices.at(m_parent->m_edges.at(j).from);
+}
+
+//============================================================================//
+//                     QTriangulator::MonotoneToTriangles                     //
+//============================================================================//
+
+void QTriangulator::MonotoneToTriangles::decompose()
+{
+    QVector<quint32> result;
+    QDataBuffer<int> stack;
+    m_first = 0;
+    // Require at least three more indices.
+    while (m_first + 3 <= m_parent->m_indices.size()) {
+        m_length = 0;
+        while (m_parent->m_indices.at(m_first + m_length) != Q_TRIANGULATE_END_OF_POLYGON) {
+            ++m_length;
+            Q_ASSERT(m_first + m_length < m_parent->m_indices.size());
+        }
+        if (m_length < 3) {
+            m_first += m_length + 1;
+            continue;
+        }
+
+        int minimum = 0;
+        while (less(next(minimum), minimum))
+            minimum = next(minimum);
+        while (less(previous(minimum), minimum))
+            minimum = previous(minimum);
+
+        stack.reset();
+        stack.add(minimum);
+        int left = previous(minimum);
+        int right = next(minimum);
+        bool stackIsOnLeftSide;
+        bool clockwiseOrder = leftOfEdge(minimum, left, right);
+
+        if (less(left, right)) {
+            stack.add(left);
+            left = previous(left);
+            stackIsOnLeftSide = true;
+        } else {
+            stack.add(right);
+            right = next(right);
+            stackIsOnLeftSide = false;
+        }
+
+        for (int count = 0; count + 2 < m_length; ++count)
+        {
+            Q_ASSERT(stack.size() >= 2);
+            if (less(left, right)) {
+                if (stackIsOnLeftSide == false) {
+                    for (int i = 0; i + 1 < stack.size(); ++i) {
+                        result.push_back(indices(stack.at(i + 1)));
+                        result.push_back(indices(left));
+                        result.push_back(indices(stack.at(i)));
+                    }
+                    stack.first() = stack.last();
+                    stack.resize(1);
+                } else {
+                    while (stack.size() >= 2 && (clockwiseOrder ^ !leftOfEdge(left, stack.at(stack.size() - 2), stack.last()))) {
+                        result.push_back(indices(stack.at(stack.size() - 2)));
+                        result.push_back(indices(left));
+                        result.push_back(indices(stack.last()));
+                        stack.pop_back();
+                    }
+                }
+                stack.add(left);
+                left = previous(left);
+                stackIsOnLeftSide = true;
+            } else {
+                if (stackIsOnLeftSide == true) {
+                    for (int i = 0; i + 1 < stack.size(); ++i) {
+                        result.push_back(indices(stack.at(i)));
+                        result.push_back(indices(right));
+                        result.push_back(indices(stack.at(i + 1)));
+                    }
+                    stack.first() = stack.last();
+                    stack.resize(1);
+                } else {
+                    while (stack.size() >= 2 && (clockwiseOrder ^ !leftOfEdge(right, stack.last(), stack.at(stack.size() - 2)))) {
+                        result.push_back(indices(stack.last()));
+                        result.push_back(indices(right));
+                        result.push_back(indices(stack.at(stack.size() - 2)));
+                        stack.pop_back();
+                    }
+                }
+                stack.add(right);
+                right = next(right);
+                stackIsOnLeftSide = false;
+            }
+        }
+
+        m_first += m_length + 1;
+    }
+    m_parent->m_indices = result;
+}
+
+//============================================================================//
+//                                qTriangulate                                //
+//============================================================================//
+
+QTriangleSet qTriangulate(const qreal *polygon, int count, uint hint, const QTransform &matrix)
+{
+    QTriangulator triangulator;
+    triangulator.initialize(polygon, count, hint, matrix);
+    return triangulator.triangulate();
+}
+
+QTriangleSet qTriangulate(const QVectorPath &path, const QTransform &matrix, qreal lod)
+{
+    QTriangulator triangulator;
+    triangulator.initialize(path, matrix, lod);
+    return triangulator.triangulate();
+}
+
+QTriangleSet qTriangulate(const QPainterPath &path, const QTransform &matrix, qreal lod)
+{
+    QTriangulator triangulator;
+    triangulator.initialize(path, matrix, lod);
+    return triangulator.triangulate();
+}
+
+QPolylineSet qPolyline(const QVectorPath &path, const QTransform &matrix, qreal lod)
+{
+    QTriangulator triangulator;
+    triangulator.initialize(path, matrix, lod);
+    return triangulator.polyline();
+}
+
+QPolylineSet qPolyline(const QPainterPath &path, const QTransform &matrix, qreal lod)
+{
+    QTriangulator triangulator;
+    triangulator.initialize(path, matrix, lod);
+    return triangulator.polyline();
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qtriangulator_p.h b/src/opengl/gl2paintengineex/qtriangulator_p.h
new file mode 100644
index 0000000..e5eec39
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qtriangulator_p.h
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTRIANGULATOR_P_H
+#define QTRIANGULATOR_P_H
+
+//
+//  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 <QtCore/qvector.h>
+#include <QtGui/private/qvectorpath_p.h>
+
+QT_BEGIN_NAMESPACE
+
+#define Q_TRIANGULATE_END_OF_POLYGON quint32(-1)
+
+struct QTriangleSet
+{
+    inline QTriangleSet() { }
+    inline QTriangleSet(const QTriangleSet &other) : vertices(other.vertices), indices(other.indices) { }
+    QTriangleSet &operator = (const QTriangleSet &other) {vertices = other.vertices; indices = other.indices; return *this;}
+
+    // The vertices of a triangle are given by: (x[i[n]], y[i[n]]), (x[j[n]], y[j[n]]), (x[k[n]], y[k[n]]), n = 0, 1, ...
+    QVector<qreal> vertices; // [x[0], y[0], x[1], y[1], x[2], ...]
+    QVector<quint32> indices; // [i[0], j[0], k[0], i[1], j[1], k[1], i[2], ...]
+};
+
+struct QPolylineSet
+{
+    inline QPolylineSet() { }
+    inline QPolylineSet(const QPolylineSet &other) : vertices(other.vertices), indices(other.indices) { }
+    QPolylineSet &operator = (const QPolylineSet &other) {vertices = other.vertices; indices = other.indices; return *this;}
+
+    QVector<qreal> vertices; // [x[0], y[0], x[1], y[1], x[2], ...]
+    QVector<quint32> indices;
+
+};
+
+// The vertex coordinates of the returned triangle set will be rounded to a grid with a mesh size
+// of 1/32. The polygon is first transformed, then scaled by 32, the coordinates are rounded to
+// integers, the polygon is triangulated, and then scaled back by 1/32.
+// 'hint' should be a combination of QVectorPath::Hints.
+// 'lod' is the level of detail. Default is 1. Curves are split into more lines when 'lod' is higher.
+QTriangleSet qTriangulate(const qreal *polygon, int count, uint hint = QVectorPath::PolygonHint | QVectorPath::OddEvenFill, const QTransform &matrix = QTransform());
+QTriangleSet qTriangulate(const QVectorPath &path, const QTransform &matrix = QTransform(), qreal lod = 1);
+QTriangleSet qTriangulate(const QPainterPath &path, const QTransform &matrix = QTransform(), qreal lod = 1);
+QPolylineSet qPolyline(const QVectorPath &path, const QTransform &matrix = QTransform(), qreal lod = 1);
+QPolylineSet qPolyline(const QPainterPath &path, const QTransform &matrix = QTransform(), qreal lod = 1);
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/opengl/opengl.pro b/src/opengl/opengl.pro
index 6076891..9473343 100644
--- a/src/opengl/opengl.pro
+++ b/src/opengl/opengl.pro
@@ -13,7 +13,6 @@ include(../qbase.pri)
 !win32:!embedded:!mac:CONFIG	   += x11
 contains(QT_CONFIG, opengl):CONFIG += opengl
 contains(QT_CONFIG, opengles1):CONFIG += opengles1
-contains(QT_CONFIG, opengles1cl):CONFIG += opengles1cl
 contains(QT_CONFIG, opengles2):CONFIG += opengles2
 contains(QT_CONFIG, egl):CONFIG += egl
 
@@ -26,6 +25,7 @@ HEADERS += qgl.h \
            qglframebufferobject_p.h  \
            qglextensions_p.h \
            qglpaintdevice_p.h \
+           qglbuffer.h \
 
 
 SOURCES	+= qgl.cpp \
@@ -34,6 +34,7 @@ SOURCES	+= qgl.cpp \
 	   qglframebufferobject.cpp \
            qglextensions.cpp \
            qglpaintdevice.cpp \
+           qglbuffer.cpp \
 
 
 !contains(QT_CONFIG, opengles2) {
@@ -41,7 +42,7 @@ SOURCES	+= qgl.cpp \
     SOURCES += qpaintengine_opengl.cpp
 }
 
-!contains(QT_CONFIG, opengles1):!contains(QT_CONFIG, opengles1cl) {
+!contains(QT_CONFIG, opengles1) {
     HEADERS +=  qglshaderprogram.h \
                 qglpixmapfilter_p.h  \
                 qgraphicsshadereffect_p.h \
@@ -55,6 +56,7 @@ SOURCES	+= qgl.cpp \
                 gl2paintengineex/qglengineshadersource_p.h \
                 gl2paintengineex/qglcustomshaderstage_p.h \
                 gl2paintengineex/qtriangulatingstroker_p.h \
+                gl2paintengineex/qtriangulator_p.h \
                 gl2paintengineex/qtextureglyphcache_gl_p.h
 
     SOURCES +=  qglshaderprogram.cpp \
@@ -69,12 +71,13 @@ SOURCES	+= qgl.cpp \
                 gl2paintengineex/qpaintengineex_opengl2.cpp \
                 gl2paintengineex/qglcustomshaderstage.cpp \
                 gl2paintengineex/qtriangulatingstroker.cpp \
+                gl2paintengineex/qtriangulator.cpp \
                 gl2paintengineex/qtextureglyphcache_gl.cpp
 
 }
 
 x11 {
-    contains(QT_CONFIG, opengles1)|contains(QT_CONFIG, opengles1cl)|contains(QT_CONFIG, opengles2) {
+    contains(QT_CONFIG, opengles1)|contains(QT_CONFIG, opengles2) {
         SOURCES +=  qgl_x11egl.cpp \
                     qglpixelbuffer_egl.cpp \
                     qgl_egl.cpp \
@@ -113,6 +116,7 @@ mac {
     LIBS_PRIVATE += -framework AppKit -framework Carbon
 }
 win32:!wince*: {
+    DEFINES += QT_NO_EGL
     SOURCES += qgl_win.cpp \
 	       qglpixelbuffer_win.cpp
 }
@@ -121,8 +125,7 @@ wince*: {
                qglpixelbuffer_egl.cpp \
                qgl_egl.cpp
 
-    HEADERS += qgl_cl_p.h \
-               qgl_egl_p.h \
+    HEADERS += qgl_egl_p.h
 }
 
 embedded {
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index ca898c7..e56b149 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -67,7 +67,7 @@
 #include "qimage.h"
 #include "qgl_p.h"
 
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
 #include "gl2paintengineex/qpaintengineex_opengl2_p.h"
 #endif
 
@@ -95,11 +95,6 @@
 
 QT_BEGIN_NAMESPACE
 
-#ifdef QT_OPENGL_ES_1_CL
-#include "qgl_cl_p.h"
-#endif
-
-
 #if defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_WS_QWS)
 QGLExtensionFuncs QGLContextPrivate::qt_extensionFuncs;
 #endif
@@ -226,6 +221,9 @@ bool qt_gl_preferGL2Engine()
     \value DirectRendering   Specifies that the context is used for direct rendering to a display.
     \value HasOverlay        Enables the use of an overlay.
     \value SampleBuffers     Enables the use of sample buffers.
+    \value DeprecatedFunctions      Enables the use of deprecated functionality for OpenGL 3.x
+                                    contexts. A context with deprecated functionality enabled is
+                                    called a full context in the OpenGL specification.
     \value SingleBuffer      Specifies the use of a single buffer, as opposed to double buffers.
     \value NoDepthBuffer     Disables the use of a depth buffer.
     \value ColorIndex        Specifies that the context should use a color index as its pixel format.
@@ -236,6 +234,9 @@ bool qt_gl_preferGL2Engine()
     \value IndirectRendering Specifies that the context is used for indirect rendering to a buffer.
     \value NoOverlay         Disables the use of an overlay.
     \value NoSampleBuffers   Disables the use of sample buffers.
+    \value NoDeprecatedFunctions    Disables the use of deprecated functionality for OpenGL 3.x
+                                    contexts. A context with deprecated functionality disabled is
+                                    called a forward compatible context in the OpenGL specification.
 
     \sa {Sample Buffers Example}
 */
@@ -765,6 +766,7 @@ void QGLFormat::setSamples(int numSamples)
         return;
     }
     d->numSamples = numSamples;
+    setSampleBuffers(numSamples > 0);
 }
 
 /*!
@@ -903,6 +905,7 @@ void QGLFormat::setDepthBufferSize(int size)
         return;
     }
     d->depthSize = size;
+    setDepth(size > 0);
 }
 
 /*!
@@ -1016,7 +1019,7 @@ void QGLFormat::setAlphaBufferSize(int size)
         return;
     }
     d->alphaSize = size;
-    setOption(QGL::AlphaChannel);
+    setAlpha(size > 0);
 }
 
 /*!
@@ -1043,6 +1046,7 @@ void QGLFormat::setAccumBufferSize(int size)
         return;
     }
     d->accumSize = size;
+    setAccum(size > 0);
 }
 
 /*!
@@ -1068,6 +1072,7 @@ void QGLFormat::setStencilBufferSize(int size)
         return;
     }
     d->stencilSize = size;
+    setStencil(size > 0);
 }
 
 /*!
@@ -1081,6 +1086,90 @@ int QGLFormat::stencilBufferSize() const
 }
 
 /*!
+    \since 4.7
+
+    Set the OpenGL version to the \a major and \a minor numbers. If a
+    context compatible with the requested OpenGL version cannot be
+    created, a context compatible with version 1.x is created instead.
+
+    \sa majorVersion(), minorVersion()
+*/
+void QGLFormat::setVersion(int major, int minor)
+{
+    if (major < 1 || minor < 0) {
+        qWarning("QGLFormat::setVersion: Cannot set zero or negative version number %d.%d", major, minor);
+        return;
+    }
+    detach();
+    d->majorVersion = major;
+    d->minorVersion = minor;
+}
+
+/*!
+    \since 4.7
+
+    Returns the OpenGL major version.
+
+    \sa setVersion(), minorVersion()
+*/
+int QGLFormat::majorVersion() const
+{
+    return d->majorVersion;
+}
+
+/*!
+    \since 4.7
+
+    Returns the OpenGL minor version.
+
+    \sa setVersion(), majorVersion()
+*/
+int QGLFormat::minorVersion() const
+{
+    return d->minorVersion;
+}
+
+/*!
+    \enum QGLFormat::OpenGLContextProfile
+    \since 4.7
+
+    This enum describes the OpenGL context profiles that can be
+    specified for contexts implementing OpenGL version 3.2 or
+    higher. These profiles are different from OpenGL ES profiles.
+
+    \value NoProfile            OpenGL version is lower than 3.2.
+    \value CoreProfile          Functionality deprecated in OpenGL version 3.0 is not available.
+    \value CompatibilityProfile Functionality from earlier OpenGL versions is available.
+*/
+
+/*!
+    \since 4.7
+
+    Set the OpenGL context profile to \a profile. The \a profile is
+    ignored if the requested OpenGL version is less than 3.2.
+
+    \sa profile()
+*/
+void QGLFormat::setProfile(OpenGLContextProfile profile)
+{
+    detach();
+    d->profile = profile;
+}
+
+/*!
+    \since 4.7
+
+    Returns the OpenGL context profile.
+
+    \sa setProfile()
+*/
+QGLFormat::OpenGLContextProfile QGLFormat::profile() const
+{
+    return d->profile;
+}
+
+
+/*!
     \fn bool QGLFormat::hasOpenGL()
 
     Returns true if the window system has any OpenGL support;
@@ -1116,25 +1205,21 @@ QGLFormat::OpenGLVersionFlags Q_AUTOTEST_EXPORT qOpenGLVersionFlagsFromString(co
                     if (parts[2].startsWith(QLatin1String("1.1")))
                         versionFlags |= QGLFormat::OpenGL_ES_Common_Version_1_1 |
                                         QGLFormat::OpenGL_ES_CommonLite_Version_1_1;
-                }
-                else {
+                } else {
                     // Not -CM, must be CL, CommonLite
                     versionFlags |= QGLFormat::OpenGL_ES_CommonLite_Version_1_0;
                     if (parts[2].startsWith(QLatin1String("1.1")))
                         versionFlags |= QGLFormat::OpenGL_ES_CommonLite_Version_1_1;
                 }
-            }
-            else {
+            } else {
                 // OpenGL ES version 2.0 or higher
                 versionFlags |= QGLFormat::OpenGL_ES_Version_2_0;
             }
-        }
-        else {
+        } else {
             // if < 3 parts to the name, it is an unrecognised OpenGL ES
             qWarning("Unrecognised OpenGL ES version");
         }
-    }
-    else {
+    } else {
         // not ES, regular OpenGL, the version numbers are first in the string
         if (versionString.startsWith(QLatin1String("1."))) {
             switch (versionString[2].toAscii()) {
@@ -1151,30 +1236,35 @@ QGLFormat::OpenGLVersionFlags Q_AUTOTEST_EXPORT qOpenGLVersionFlagsFromString(co
             default:
                 break;
             }
-        }
-        else if (versionString.startsWith(QLatin1String("2."))) {
+        } else if (versionString.startsWith(QLatin1String("2."))) {
             versionFlags |= QGLFormat::OpenGL_Version_1_1 |
                             QGLFormat::OpenGL_Version_1_2 |
                             QGLFormat::OpenGL_Version_1_3 |
                             QGLFormat::OpenGL_Version_1_4 |
                             QGLFormat::OpenGL_Version_1_5 |
                             QGLFormat::OpenGL_Version_2_0;
-            QString minorVersion = versionString.section(QLatin1Char(' '), 0, 0).section(QLatin1Char('.'), 1, 1);
-            if (minorVersion == QChar(QLatin1Char('1')))
+            if (versionString[2].toAscii() == '1')
                 versionFlags |= QGLFormat::OpenGL_Version_2_1;
-        }
-        else if (versionString.startsWith(QLatin1String("3."))) {
-         versionFlags |= QGLFormat::OpenGL_Version_1_1 |
-                         QGLFormat::OpenGL_Version_1_2 |
-                         QGLFormat::OpenGL_Version_1_3 |
-                         QGLFormat::OpenGL_Version_1_4 |
-                         QGLFormat::OpenGL_Version_1_5 |
-                         QGLFormat::OpenGL_Version_2_0 |
-                         QGLFormat::OpenGL_Version_2_1 |
-                         QGLFormat::OpenGL_Version_3_0;
-        }
-        else
+        } else if (versionString.startsWith(QLatin1String("3."))) {
+            versionFlags |= QGLFormat::OpenGL_Version_1_1 |
+                            QGLFormat::OpenGL_Version_1_2 |
+                            QGLFormat::OpenGL_Version_1_3 |
+                            QGLFormat::OpenGL_Version_1_4 |
+                            QGLFormat::OpenGL_Version_1_5 |
+                            QGLFormat::OpenGL_Version_2_0 |
+                            QGLFormat::OpenGL_Version_2_1 |
+                            QGLFormat::OpenGL_Version_3_0;
+            switch (versionString[2].toAscii()) {
+            case '2':
+                versionFlags |= QGLFormat::OpenGL_Version_3_2;
+            case '1':
+                versionFlags |= QGLFormat::OpenGL_Version_3_1;
+            default:
+                break;
+            }
+        } else {
             qWarning("Unrecognised OpenGL version");
+        }
     }
     return versionFlags;
 }
@@ -1206,6 +1296,12 @@ QGLFormat::OpenGLVersionFlags Q_AUTOTEST_EXPORT qOpenGLVersionFlagsFromString(co
 
     \value OpenGL_Version_3_0  OpenGL version 3.0 or higher is present.
 
+    \value OpenGL_Version_3_1  OpenGL version 3.1 or higher is present.
+    Note that OpenGL version 3.1 or higher does not necessarily support all the features of
+    version 3.0 and lower.
+
+    \value OpenGL_Version_3_2  OpenGL version 3.2 or higher is present.
+
     \value OpenGL_ES_CommonLite_Version_1_0  OpenGL ES version 1.0 Common Lite or higher is present.
 
     \value OpenGL_ES_Common_Version_1_0  OpenGL ES version 1.0 Common or higher is present.
@@ -1377,14 +1473,20 @@ void QGLFormat::setDefaultOverlayFormat(const QGLFormat &f)
 
 bool operator==(const QGLFormat& a, const QGLFormat& b)
 {
-    return (int) a.d->opts == (int) b.d->opts && a.d->pln == b.d->pln && a.d->alphaSize == b.d->alphaSize
-        && a.d->accumSize == b.d->accumSize && a.d->stencilSize == b.d->stencilSize
+    return (a.d == b.d) || ((int) a.d->opts == (int) b.d->opts
+        && a.d->pln == b.d->pln
+        && a.d->alphaSize == b.d->alphaSize
+        && a.d->accumSize == b.d->accumSize
+        && a.d->stencilSize == b.d->stencilSize
         && a.d->depthSize == b.d->depthSize
         && a.d->redSize == b.d->redSize
         && a.d->greenSize == b.d->greenSize
         && a.d->blueSize == b.d->blueSize
         && a.d->numSamples == b.d->numSamples
-        && a.d->swapInterval == b.d->swapInterval;
+        && a.d->swapInterval == b.d->swapInterval
+        && a.d->majorVersion == b.d->majorVersion
+        && a.d->minorVersion == b.d->minorVersion
+        && a.d->profile == b.d->profile);
 }
 
 
@@ -1481,6 +1583,7 @@ void QGLContextPrivate::init(QPaintDevice *dev, const QGLFormat &format)
     vi = 0;
 #endif
 #if defined(QT_OPENGL_ES)
+    ownsEglContext = false;
     eglContext = 0;
     eglSurface = EGL_NO_SURFACE;
 #endif
@@ -1558,7 +1661,7 @@ QImage qt_gl_read_texture(const QSize &size, bool alpha_format, bool include_alp
     QImage img(size, alpha_format ? QImage::Format_ARGB32_Premultiplied : 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)
+#if !defined(QT_OPENGL_ES_2) && !defined(QT_OPENGL_ES_1)
     //### 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
@@ -1586,14 +1689,12 @@ typedef void (*_qt_image_cleanup_hook_64)(qint64);
 extern Q_GUI_EXPORT _qt_pixmap_cleanup_hook_64 qt_pixmap_cleanup_hook_64;
 extern Q_GUI_EXPORT _qt_image_cleanup_hook_64 qt_image_cleanup_hook_64;
 
-static QGLTextureCache *qt_gl_texture_cache = 0;
+
+Q_GLOBAL_STATIC(QGLTextureCache, qt_gl_texture_cache)
 
 QGLTextureCache::QGLTextureCache()
     : m_cache(64*1024) // cache ~64 MB worth of textures - this is not accurate though
 {
-    Q_ASSERT(qt_gl_texture_cache == 0);
-    qt_gl_texture_cache = this;
-
     QImagePixmapCleanupHooks::instance()->addPixmapDataModificationHook(cleanupTexturesForPixampData);
     QImagePixmapCleanupHooks::instance()->addPixmapDataDestructionHook(cleanupBeforePixmapDestruction);
     QImagePixmapCleanupHooks::instance()->addImageHook(cleanupTexturesForCacheKey);
@@ -1601,8 +1702,7 @@ QGLTextureCache::QGLTextureCache()
 
 QGLTextureCache::~QGLTextureCache()
 {
-    qt_gl_texture_cache = 0;
-
+    Q_ASSERT(size() == 0);
     QImagePixmapCleanupHooks::instance()->removePixmapDataModificationHook(cleanupTexturesForPixampData);
     QImagePixmapCleanupHooks::instance()->removePixmapDataDestructionHook(cleanupBeforePixmapDestruction);
     QImagePixmapCleanupHooks::instance()->removeImageHook(cleanupTexturesForCacheKey);
@@ -1610,6 +1710,7 @@ QGLTextureCache::~QGLTextureCache()
 
 void QGLTextureCache::insert(QGLContext* ctx, qint64 key, QGLTexture* texture, int cost)
 {
+    QWriteLocker locker(&m_lock);
     if (m_cache.totalCost() + cost > m_cache.maxCost()) {
         // the cache is full - make an attempt to remove something
         const QList<qint64> keys = m_cache.keys();
@@ -1627,6 +1728,7 @@ void QGLTextureCache::insert(QGLContext* ctx, qint64 key, QGLTexture* texture, i
 
 bool QGLTextureCache::remove(QGLContext* ctx, GLuint textureId)
 {
+    QWriteLocker locker(&m_lock);
     QList<qint64> keys = m_cache.keys();
     for (int i = 0; i < keys.size(); ++i) {
         QGLTexture *tex = m_cache.object(keys.at(i));
@@ -1641,6 +1743,7 @@ bool QGLTextureCache::remove(QGLContext* ctx, GLuint textureId)
 
 void QGLTextureCache::removeContextTextures(QGLContext* ctx)
 {
+    QWriteLocker locker(&m_lock);
     QList<qint64> keys = m_cache.keys();
     for (int i = 0; i < keys.size(); ++i) {
         const qint64 &key = keys.at(i);
@@ -1649,25 +1752,14 @@ void QGLTextureCache::removeContextTextures(QGLContext* ctx)
     }
 }
 
-QGLTextureCache* QGLTextureCache::instance()
-{
-    if (!qt_gl_texture_cache)
-        qt_gl_texture_cache = new QGLTextureCache;
-
-    return qt_gl_texture_cache;
-}
-
 /*
   a hook that removes textures from the cache when a pixmap/image
   is deref'ed
 */
 void QGLTextureCache::cleanupTexturesForCacheKey(qint64 cacheKey)
 {
-    // ### remove when the GL texture cache becomes thread-safe
-    if (qApp->thread() == QThread::currentThread()) {
-        instance()->remove(cacheKey);
-        Q_ASSERT(instance()->getTexture(cacheKey) == 0);
-    }
+    qt_gl_texture_cache()->remove(cacheKey);
+    Q_ASSERT(qt_gl_texture_cache()->getTexture(cacheKey) == 0);
 }
 
 
@@ -1689,10 +1781,9 @@ void QGLTextureCache::cleanupBeforePixmapDestruction(QPixmapData* pmd)
 #endif
 }
 
-void QGLTextureCache::deleteIfEmpty()
+QGLTextureCache *QGLTextureCache::instance()
 {
-    if (instance()->size() == 0)
-        delete instance();
+    return qt_gl_texture_cache();
 }
 
 // DDS format structure
@@ -1858,7 +1949,6 @@ QGLContext::~QGLContext()
 {
     // remove any textures cached in this context
     QGLTextureCache::instance()->removeContextTextures(this);
-    QGLTextureCache::deleteIfEmpty(); // ### thread safety
 
     d_ptr->group->cleanupResources(this);
 
@@ -2118,8 +2208,8 @@ QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G
     Q_Q(QGLContext);
 
 #ifdef QGL_BIND_TEXTURE_DEBUG
-    printf("QGLContextPrivate::bindTexture(), imageSize=(%d,%d), internalFormat =0x%x, options=%x\n",
-           image.width(), image.height(), internalFormat, int(options));
+    printf("QGLContextPrivate::bindTexture(), imageSize=(%d,%d), internalFormat =0x%x, options=%x, key=%llx\n",
+           image.width(), image.height(), internalFormat, int(options), key);
     QTime time;
     time.start();
 #endif
@@ -2290,7 +2380,7 @@ QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G
 #ifndef QT_NO_DEBUG
     GLenum error = glGetError();
     if (error != GL_NO_ERROR) {
-        qWarning(" - texture upload failed, error code 0x%x\n", error);
+        qWarning(" - texture upload failed, error code 0x%x, enum: %d (%x)\n", error, target, target);
     }
 #endif
 
@@ -2327,7 +2417,7 @@ QGLTexture *QGLContextPrivate::bindTexture(const QPixmap &pixmap, GLenum target,
 {
     Q_Q(QGLContext);
     QPixmapData *pd = pixmap.pixmapData();
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
     if (target == GL_TEXTURE_2D && pd->classId() == QPixmapData::OpenGLClass) {
         const QGLPixmapData *data = static_cast<const QGLPixmapData *>(pd);
 
@@ -2354,7 +2444,7 @@ QGLTexture *QGLContextPrivate::bindTexture(const QPixmap &pixmap, GLenum target,
     if (pd->classId() == QPixmapData::X11Class && pd->pixelType() == QPixmapData::PixmapType
         && xinfo && xinfo->screen() == pixmap.x11Info().screen())
     {
-        texture = bindTextureFromNativePixmap(pd, key, options);
+        texture = bindTextureFromNativePixmap(const_cast<QPixmap*>(&pixmap), key, options);
         if (texture) {
             texture->options |= QGLContext::MemoryManagedBindOption;
             texture->boundPixmap = pd;
@@ -2363,8 +2453,15 @@ QGLTexture *QGLContextPrivate::bindTexture(const QPixmap &pixmap, GLenum target,
     }
 #endif
 
-    if (!texture)
-        texture = bindTexture(pixmap.toImage(), target, format, key, options);
+    if (!texture) {
+        QImage image = pixmap.toImage();
+        // If the system depth is 16 and the pixmap doesn't have an alpha channel
+        // then we convert it to RGB16 in the hope that it gets uploaded as a 16
+        // bit texture which is much faster to access than a 32-bit one.
+        if (pixmap.depth() == 16 && !image.hasAlphaChannel() )
+            image = image.convertToFormat(QImage::Format_RGB16);
+        texture = bindTexture(image, target, format, key, options);
+    }
     // NOTE: bindTexture(const QImage&, GLenum, GLint, const qint64, bool) should never return null
     Q_ASSERT(texture);
 
@@ -2457,7 +2554,7 @@ GLuint QGLContext::bindTexture(const QImage &image, GLenum target, GLint format,
         return 0;
 
     Q_D(QGLContext);
-    QGLTexture *texture = d->bindTexture(image, target, format, false, options);
+    QGLTexture *texture = d->bindTexture(image, target, format, options);
     return texture->id;
 }
 
@@ -2469,7 +2566,7 @@ GLuint QGLContext::bindTexture(const QImage &image, QMacCompatGLenum target, QMa
         return 0;
 
     Q_D(QGLContext);
-    QGLTexture *texture = d->bindTexture(image, GLenum(target), GLint(format), false, DefaultBindOption);
+    QGLTexture *texture = d->bindTexture(image, GLenum(target), GLint(format), DefaultBindOption);
     return texture->id;
 }
 
@@ -2481,7 +2578,7 @@ GLuint QGLContext::bindTexture(const QImage &image, QMacCompatGLenum target, QMa
         return 0;
 
     Q_D(QGLContext);
-    QGLTexture *texture = d->bindTexture(image, GLenum(target), GLint(format), false, options);
+    QGLTexture *texture = d->bindTexture(image, GLenum(target), GLint(format), options);
     return texture->id;
 }
 #endif
@@ -2579,41 +2676,41 @@ void QGLContext::deleteTexture(QMacCompatGLuint id)
 }
 #endif
 
-void qt_add_rect_to_array(const QRectF &r, q_vertexType *array)
+void qt_add_rect_to_array(const QRectF &r, GLfloat *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);
+    array[0] = left;
+    array[1] = top;
+    array[2] = right;
+    array[3] = top;
+    array[4] = right;
+    array[5] = bottom;
+    array[6] = left;
+    array[7] = bottom;
 }
 
-void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, q_vertexType *array)
+void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, GLfloat *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);
+    array[0] = x1;
+    array[1] = y1;
+    array[2] = x2;
+    array[3] = y1;
+    array[4] = x2;
+    array[5] = y2;
+    array[6] = x1;
+    array[7] = y2;
 }
 
 #if !defined(QT_OPENGL_ES_2)
 
 static void qDrawTextureRect(const QRectF &target, GLint textureWidth, GLint textureHeight, GLenum textureTarget)
 {
-    q_vertexType tx = f2vt(1);
-    q_vertexType ty = f2vt(1);
+    GLfloat tx = 1.0f;
+    GLfloat ty = 1.0f;
 
 #ifdef QT_OPENGL_ES
     Q_UNUSED(textureWidth);
@@ -2626,20 +2723,20 @@ static void qDrawTextureRect(const QRectF &target, GLint textureWidth, GLint tex
             glGetTexLevelParameteriv(textureTarget, 0, GL_TEXTURE_HEIGHT, &textureHeight);
         }
 
-        tx = f2vt(textureWidth);
-        ty = f2vt(textureHeight);
+        tx = GLfloat(textureWidth);
+        ty = GLfloat(textureHeight);
     }
 #endif
 
-    q_vertexType texCoordArray[4*2] = {
+    GLfloat texCoordArray[4*2] = {
         0, ty, tx, ty, tx, 0, 0, 0
     };
 
-    q_vertexType vertexArray[4*2];
+    GLfloat vertexArray[4*2];
     qt_add_rect_to_array(target, vertexArray);
 
-    glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
-    glTexCoordPointer(2, q_vertexTypeEnum, 0, texCoordArray);
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
 
     glEnableClientState(GL_VERTEX_ARRAY);
     glEnableClientState(GL_TEXTURE_COORD_ARRAY);
@@ -3192,6 +3289,7 @@ void QGLContextPrivate::setCurrentContext(QGLContext *context)
 */
 
 
+
 /*****************************************************************************
   QGLWidget implementation
  *****************************************************************************/
@@ -3312,6 +3410,15 @@ void QGLContextPrivate::setCurrentContext(QGLContext *context)
     One approach to doing this is shown in the
     \l{Overpainting Example}{Overpainting} example.
 
+    \section1 Threading
+
+    It is possible to render into a QGLWidget from another thread, but it
+    requires that all access to the GL context is safe guarded. The Qt GUI
+    thread will try to use the context in resizeEvent and paintEvent, so in
+    order for threaded rendering using a GL widget to work, these functions
+    need to be intercepted in the GUI thread and handled accordingly in the
+    application.
+
     \e{OpenGL is a trademark of Silicon Graphics, Inc. in the United States and other
     countries.}
 
@@ -4801,7 +4908,7 @@ void QGLWidget::drawTexture(const QPointF &point, QMacCompatGLuint textureId, QM
 }
 #endif
 
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
 Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_gl_2_engine)
 #endif
 
@@ -4811,7 +4918,7 @@ Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_gl_engine)
 
 Q_OPENGL_EXPORT QPaintEngine* qt_qgl_paint_engine()
 {
-#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL)
+#if defined(QT_OPENGL_ES_1)
     return qt_gl_engine();
 #elif defined(QT_OPENGL_ES_2)
     return qt_gl_2_engine();
@@ -4934,7 +5041,7 @@ QGLExtensions::Extensions QGLExtensions::currentContextExtensions()
     glExtensions |= GenerateMipmap;
     glExtensions |= FragmentShader;
 #endif
-#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL)
+#if defined(QT_OPENGL_ES_1)
     if (extensions.match("GL_OES_framebuffer_object"))
         glExtensions |= FramebufferObject;
 #endif
@@ -4960,6 +5067,20 @@ QGLExtensions::Extensions QGLExtensions::currentContextExtensions()
     return glExtensions;
 }
 
+
+class QGLDefaultExtensions
+{
+public:
+    QGLDefaultExtensions() {
+        QGLTemporaryContext tempContext;
+        extensions = QGLExtensions::currentContextExtensions();
+    }
+
+    QGLExtensions::Extensions extensions;
+};
+
+Q_GLOBAL_STATIC(QGLDefaultExtensions, qtDefaultExtensions)
+
 /*
     Returns the GL extensions for the current QGLContext. If there is no
     current QGLContext, a default context will be created and the extensions
@@ -4967,34 +5088,19 @@ QGLExtensions::Extensions QGLExtensions::currentContextExtensions()
 */
 QGLExtensions::Extensions QGLExtensions::glExtensions()
 {
-    QGLTemporaryContext *tmpContext = 0;
-    static bool cachedDefault = false;
-    static Extensions defaultExtensions = 0;
+    Extensions extensionFlags = 0;
     QGLContext *currentCtx = const_cast<QGLContext *>(QGLContext::currentContext());
 
     if (currentCtx && currentCtx->d_func()->extension_flags_cached)
         return currentCtx->d_func()->extension_flags;
 
     if (!currentCtx) {
-        if (cachedDefault) {
-            return defaultExtensions;
-        } else {
-            tmpContext = new QGLTemporaryContext;
-            cachedDefault = true;
-        }
-    }
-
-    Extensions extensionFlags = currentContextExtensions();
-    if (currentCtx) {
+        extensionFlags = qtDefaultExtensions()->extensions;
+    } else {
+        extensionFlags = currentContextExtensions();
         currentCtx->d_func()->extension_flags_cached = true;
         currentCtx->d_func()->extension_flags = extensionFlags;
-    } else {
-        defaultExtensions = extensionFlags;
     }
-
-    if (tmpContext)
-        delete tmpContext;
-
     return extensionFlags;
 }
 
diff --git a/src/opengl/qgl.h b/src/opengl/qgl.h
index 1a04ff9..64f54a3 100644
--- a/src/opengl/qgl.h
+++ b/src/opengl/qgl.h
@@ -57,7 +57,7 @@ QT_BEGIN_HEADER
 #if defined(Q_WS_MAC)
 # include <OpenGL/gl.h>
 # include <OpenGL/glu.h>
-#elif defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL)
+#elif defined(QT_OPENGL_ES_1)
 # include <GLES/gl.h>
 #ifndef GL_DOUBLE
 # define GL_DOUBLE GL_FLOAT
@@ -144,6 +144,7 @@ namespace QGL
         DirectRendering         = 0x0080,
         HasOverlay              = 0x0100,
         SampleBuffers           = 0x0200,
+        DeprecatedFunctions     = 0x0400,
         SingleBuffer            = DoubleBuffer    << 16,
         NoDepthBuffer           = DepthBuffer     << 16,
         ColorIndex              = Rgba            << 16,
@@ -153,7 +154,8 @@ namespace QGL
         NoStereoBuffers         = StereoBuffers   << 16,
         IndirectRendering       = DirectRendering << 16,
         NoOverlay               = HasOverlay      << 16,
-        NoSampleBuffers         = SampleBuffers   << 16
+        NoSampleBuffers         = SampleBuffers   << 16,
+        NoDeprecatedFunctions   = DeprecatedFunctions << 16
     };
     Q_DECLARE_FLAGS(FormatOptions, FormatOption)
 }
@@ -235,7 +237,20 @@ public:
     static bool hasOpenGL();
     static bool hasOpenGLOverlays();
 
-    enum  OpenGLVersionFlag {
+    void setVersion(int major, int minor);
+    int majorVersion() const;
+    int minorVersion() const;
+
+    enum OpenGLContextProfile {
+        NoProfile,
+        CoreProfile,
+        CompatibilityProfile
+    };
+
+    void setProfile(OpenGLContextProfile profile);
+    OpenGLContextProfile profile() const;
+
+    enum OpenGLVersionFlag {
         OpenGL_Version_None               = 0x00000000,
         OpenGL_Version_1_1                = 0x00000001,
         OpenGL_Version_1_2                = 0x00000002,
@@ -249,7 +264,9 @@ public:
         OpenGL_ES_Common_Version_1_1      = 0x00000200,
         OpenGL_ES_CommonLite_Version_1_1  = 0x00000400,
         OpenGL_ES_Version_2_0             = 0x00000800,
-        OpenGL_Version_3_0                = 0x00001000
+        OpenGL_Version_3_0                = 0x00001000,
+        OpenGL_Version_3_1                = 0x00002000,
+        OpenGL_Version_3_2                = 0x00004000
     };
     Q_DECLARE_FLAGS(OpenGLVersionFlags, OpenGLVersionFlag)
 
diff --git a/src/opengl/qgl_cl_p.h b/src/opengl/qgl_cl_p.h
deleted file mode 100644
index 82b492b..0000000
--- a/src/opengl/qgl_cl_p.h
+++ /dev/null
@@ -1,141 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
-** this package.
-**
-** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-
-#ifdef QT_OPENGL_ES_1_CL
-
-//
-//  W A R N I N G
-//  -------------
-//
-// This file is not part of the Qt API.  It exists for the convenience
-// of the QGLWidget class.  This header file may change from
-// version to version without notice, or even be removed.
-//
-// We mean it.
-//
-
-QT_BEGIN_NAMESPACE
-
-inline void glTexParameterf (GLenum target, GLenum pname, GLfloat param)
-{
-    glTexParameterx(target, pname, FLOAT2X(param));
-}
-inline void glClearColor (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)
-{
-    glClearColorx(FLOAT2X(red) ,FLOAT2X(green), FLOAT2X(blue), FLOAT2X(alpha));
-}
-inline void glColor4f (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha)
-{
-    glColor4x(FLOAT2X(red) ,FLOAT2X(green), FLOAT2X(blue), FLOAT2X(alpha));
-}
-
-inline void glOrthof (GLfloat left, GLfloat right, GLfloat bottom, GLfloat top, GLfloat zNear, GLfloat zFar)
-{
-    glOrthox(FLOAT2X(left), FLOAT2X(right), FLOAT2X(bottom), FLOAT2X(top), FLOAT2X(zNear), FLOAT2X(zFar));
-}
-
-inline  void glPointSize (GLfloat size)
-{
-    glPointSizex(FLOAT2X(size));
-}
-
-inline void glPolygonOffset (GLfloat factor, GLfloat units)
-{
-    glPolygonOffsetx (FLOAT2X(factor), FLOAT2X(units));
-}
-
-inline void glRotatef (GLfloat angle, GLfloat x, GLfloat y, GLfloat z)
-{
-    glRotatex(FLOAT2X(angle), FLOAT2X(x), FLOAT2X(y), FLOAT2X(z));
-}
-
-inline void glTranslatef (GLfloat x, GLfloat y, GLfloat z)
-{
-    glTranslatex(FLOAT2X(x) ,FLOAT2X(y) ,FLOAT2X(z));
-}
-
-inline void glNormal3f (GLfloat nx, GLfloat ny, GLfloat nz)
-{
-    glNormal3x(FLOAT2X(nx), FLOAT2X(ny), FLOAT2X(nz));
-}
-
-inline void glScalef(GLfloat x, GLfloat y, GLfloat z)
-{
-    glScalex(FLOAT2X(x), FLOAT2X(y), FLOAT2X(z));
-}
-
-inline void glClearDepthf (GLclampf depth)
-{
-    glClearDepthx(FLOAT2X(depth));
-}
-
-inline void glAlphaFunc (GLenum func, GLclampf ref)
-{
-    glAlphaFuncx(func, FLOAT2X(ref));
-}
-
-inline void glLoadMatrixf (const GLfloat *_m)
-{
-    GLfixed m[16];
-    for (int i =0; i < 16; i++)
-        m[i] = FLOAT2X(_m[i]);
-    glLoadMatrixx(m);
-}
-
-inline void glMultMatrixf (const GLfloat *_m)
-{
-    GLfixed m[16];
-    for (int i =0; i < 16; i++)
-        m[i] = FLOAT2X(_m[i]);
-    glMultMatrixx (m);
-}
-
-
-inline void glLineWidth (GLfloat width)
-{
-    glLineWidthx(FLOAT2X(width));
-}
-
-QT_END_NAMESPACE
-
-#endif  //QT_OPENGL_ES_1_CL
-
diff --git a/src/opengl/qgl_egl.cpp b/src/opengl/qgl_egl.cpp
index 3addea1..822c9f6 100644
--- a/src/opengl/qgl_egl.cpp
+++ b/src/opengl/qgl_egl.cpp
@@ -40,93 +40,114 @@
 ****************************************************************************/
 
 #include <QtOpenGL/qgl.h>
+#include <QtOpenGL/qglpixelbuffer.h>
 #include "qgl_p.h"
 #include "qgl_egl_p.h"
+#include "qglpixelbuffer_p.h"
+
+#ifdef Q_WS_X11
+#include <QtGui/private/qpixmap_x11_p.h>
+#endif
 
 QT_BEGIN_NAMESPACE
 
-// Set device configuration attributes from a QGLFormat instance.
-void qt_egl_set_format(QEglProperties& props, int deviceType, const QGLFormat& f)
+void qt_eglproperties_set_glformat(QEglProperties& eglProperties, const QGLFormat& glFormat)
 {
-    if (deviceType == QInternal::Pixmap || deviceType == QInternal::Image)
-        props.setValue(EGL_SURFACE_TYPE, EGL_PIXMAP_BIT);
-    else if (deviceType == QInternal::Pbuffer)
-        props.setValue(EGL_SURFACE_TYPE, EGL_PBUFFER_BIT);
-    else
-        props.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT);
-
-    // 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) == 0 || f.redBufferSize() != -1)
-        props.setValue(EGL_RED_SIZE, f.redBufferSize() == -1 ? 1 : f.redBufferSize());
-    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) == 0 || f.blueBufferSize() != -1)
-        props.setValue(EGL_BLUE_SIZE, f.blueBufferSize() == -1 ? 1 : f.blueBufferSize());
-    if (f.alpha()) {
-        if (props.value(EGL_ALPHA_SIZE) == 0 || f.alphaBufferSize() != -1)
-            props.setValue(EGL_ALPHA_SIZE, f.alphaBufferSize() == -1 ? 1 : f.alphaBufferSize());
-    }
+    int redSize     = glFormat.redBufferSize();
+    int greenSize   = glFormat.greenBufferSize();
+    int blueSize    = glFormat.blueBufferSize();
+    int alphaSize   = glFormat.alphaBufferSize();
+    int depthSize   = glFormat.depthBufferSize();
+    int stencilSize = glFormat.stencilBufferSize();
+    int sampleCount = glFormat.samples();
 
-    if (f.depth())
-        props.setValue(EGL_DEPTH_SIZE, f.depthBufferSize() == -1 ? 1 : f.depthBufferSize());
-    if (f.stencil())
-        props.setValue(EGL_STENCIL_SIZE, f.stencilBufferSize() == -1 ? 1 : f.stencilBufferSize());
-    if (f.sampleBuffers()) {
-        props.setValue(EGL_SAMPLE_BUFFERS, 1);
-        props.setValue(EGL_SAMPLES, f.samples() == -1 ? 1 : f.samples());
-    } else {
-        props.setValue(EGL_SAMPLE_BUFFERS, 0);
-    }
-    if (deviceType == QInternal::Widget)
-        props.setValue(EGL_LEVEL, f.plane());
+    // QGLFormat uses a magic value of -1 to indicate "don't care", even when a buffer of that
+    // type has been requested. So we must check QGLFormat's booleans too if size is -1:
+    if (glFormat.alpha() && alphaSize <= 0)
+        alphaSize = 1;
+    if (glFormat.depth() && depthSize <= 0)
+        depthSize = 1;
+    if (glFormat.stencil() && stencilSize <= 0)
+        stencilSize = 1;
+    if (glFormat.sampleBuffers() && sampleCount <= 0)
+        sampleCount = 1;
+
+    // We want to make sure 16-bit configs are chosen over 32-bit configs as they will provide
+    // the best performance. The EGL config selection algorithm is a bit stange in this regard:
+    // The selection criteria for EGL_BUFFER_SIZE is "AtLeast", so we can't use it to discard
+    // 32-bit configs completely from the selection. So it then comes to the sorting algorithm.
+    // The red/green/blue sizes have a sort priority of 3, so they are sorted by first. The sort
+    // order is special and described as "by larger _total_ number of color bits.". So EGL will
+    // put 32-bit configs in the list before the 16-bit configs. However, the spec also goes on
+    // to say "If the requested number of bits in attrib_list for a particular component is 0,
+    // then the number of bits for that component is not considered". This part of the spec also
+    // seems to imply that setting the red/green/blue bits to zero means none of the components
+    // are considered and EGL disregards the entire sorting rule. It then looks to the next
+    // highest priority rule, which is EGL_BUFFER_SIZE. Despite the selection criteria being
+    // "AtLeast" for EGL_BUFFER_SIZE, it's sort order is "smaller" meaning 16-bit configs are
+    // put in the list before 32-bit configs. So, to make sure 16-bit is preffered over 32-bit,
+    // we must set the red/green/blue sizes to zero. This has an unfortunate consequence that
+    // if the application sets the red/green/blue size to 5/6/5 on the QGLFormat, they will
+    // probably get a 32-bit config, even when there's an RGB565 config avaliable. Oh well.
+
+    // Now normalize the values so -1 becomes 0
+    redSize   = redSize   > 0 ? redSize   : 0;
+    greenSize = greenSize > 0 ? greenSize : 0;
+    blueSize  = blueSize  > 0 ? blueSize  : 0;
+    alphaSize = alphaSize > 0 ? alphaSize : 0;
+    depthSize = depthSize > 0 ? depthSize : 0;
+    stencilSize = stencilSize > 0 ? stencilSize : 0;
+    sampleCount = sampleCount > 0 ? sampleCount : 0;
+
+    eglProperties.setValue(EGL_RED_SIZE,   redSize);
+    eglProperties.setValue(EGL_GREEN_SIZE, greenSize);
+    eglProperties.setValue(EGL_BLUE_SIZE,  blueSize);
+    eglProperties.setValue(EGL_ALPHA_SIZE, alphaSize);
+    eglProperties.setValue(EGL_DEPTH_SIZE, depthSize);
+    eglProperties.setValue(EGL_STENCIL_SIZE, stencilSize);
+    eglProperties.setValue(EGL_SAMPLES, sampleCount);
+    eglProperties.setValue(EGL_SAMPLE_BUFFERS, sampleCount ? 1 : 0);
 }
 
 // Updates "format" with the parameters of the selected configuration.
-void qt_egl_update_format(const QEglContext& context, QGLFormat& format)
+void qt_glformat_from_eglconfig(QGLFormat& format, const EGLConfig config)
 {
-    EGLint value = 0;
-
-    if (context.configAttrib(EGL_RED_SIZE, &value))
-        format.setRedBufferSize(value);
-    if (context.configAttrib(EGL_GREEN_SIZE, &value))
-        format.setGreenBufferSize(value);
-    if (context.configAttrib(EGL_BLUE_SIZE, &value))
-        format.setBlueBufferSize(value);
-    if (context.configAttrib(EGL_ALPHA_SIZE, &value)) {
-        format.setAlpha(value != 0);
-        if (format.alpha())
-            format.setAlphaBufferSize(value);
-    }
-
-    if (context.configAttrib(EGL_DEPTH_SIZE, &value)) {
-        format.setDepth(value != 0);
-        if (format.depth())
-            format.setDepthBufferSize(value);
-    }
-
-    if (context.configAttrib(EGL_LEVEL, &value))
-        format.setPlane(value);
+    EGLint redSize     = 0;
+    EGLint greenSize   = 0;
+    EGLint blueSize    = 0;
+    EGLint alphaSize   = 0;
+    EGLint depthSize   = 0;
+    EGLint stencilSize = 0;
+    EGLint sampleCount = 0;
+    EGLint level       = 0;
 
-    if (context.configAttrib(EGL_SAMPLE_BUFFERS, &value)) {
-        format.setSampleBuffers(value != 0);
-        if (format.sampleBuffers()) {
-            context.configAttrib(EGL_SAMPLES, &value);
-            format.setSamples(value);
-        }
-    }
+    EGLDisplay display = QEgl::display();
+    eglGetConfigAttrib(display, config, EGL_RED_SIZE,     &redSize);
+    eglGetConfigAttrib(display, config, EGL_GREEN_SIZE,   &greenSize);
+    eglGetConfigAttrib(display, config, EGL_BLUE_SIZE,    &blueSize);
+    eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE,   &alphaSize);
+    eglGetConfigAttrib(display, config, EGL_DEPTH_SIZE,   &depthSize);
+    eglGetConfigAttrib(display, config, EGL_STENCIL_SIZE, &stencilSize);
+    eglGetConfigAttrib(display, config, EGL_SAMPLES,      &sampleCount);
+    eglGetConfigAttrib(display, config, EGL_LEVEL,        &level);
 
-    if (context.configAttrib(EGL_STENCIL_SIZE, &value)) {
-        format.setStencil(value != 0);
-        if (format.stencil())
-            format.setStencilBufferSize(value);
-    }
+    format.setRedBufferSize(redSize);
+    format.setGreenBufferSize(greenSize);
+    format.setBlueBufferSize(blueSize);
+    format.setAlphaBufferSize(alphaSize);
+    format.setDepthBufferSize(depthSize);
+    format.setStencilBufferSize(stencilSize);
+    format.setSamples(sampleCount);
+    format.setPlane(level + 1);      // EGL calls level 0 "normal" whereas Qt calls 1 "normal"
+    format.setDirectRendering(true); // All EGL contexts are direct-rendered
+    format.setRgba(true);            // EGL doesn't support colour index rendering
+    format.setStereo(false);         // EGL doesn't support stereo buffers
+    format.setAccumBufferSize(0);    // EGL doesn't support accululation buffers
 
     // Clear the EGL error state because some of the above may
     // have errored out because the attribute is not applicable
     // to the surface type.  Such errors don't matter.
-    context.clearError();
+    QEgl::clearError();
 }
 
 bool QGLFormat::hasOpenGL()
@@ -141,10 +162,11 @@ void QGLContext::reset()
         return;
     d->cleanup();
     doneCurrent();
-    if (d->eglContext) {
+    if (d->eglContext && d->ownsEglContext) {
         d->destroyEglSurfaceForDevice();
         delete d->eglContext;
     }
+    d->ownsEglContext = false;
     d->eglContext = 0;
     d->eglSurface = EGL_NO_SURFACE;
     d->crWin = false;
@@ -158,12 +180,12 @@ void QGLContext::reset()
 void QGLContext::makeCurrent()
 {
     Q_D(QGLContext);
-    if (!d->valid || !d->eglContext || d->eglSurface == EGL_NO_SURFACE) {
+    if (!d->valid || !d->eglContext || d->eglSurfaceForDevice() == EGL_NO_SURFACE) {
         qWarning("QGLContext::makeCurrent(): Cannot make invalid context current");
         return;
     }
 
-    if (d->eglContext->makeCurrent(d->eglSurface))
+    if (d->eglContext->makeCurrent(d->eglSurfaceForDevice()))
         QGLContextPrivate::setCurrentContext(this);
 }
 
@@ -183,7 +205,7 @@ void QGLContext::swapBuffers() const
     if (!d->valid || !d->eglContext)
         return;
 
-    d->eglContext->swapBuffers(d->eglSurface);
+    d->eglContext->swapBuffers(d->eglSurfaceForDevice());
 }
 
 void QGLContextPrivate::destroyEglSurfaceForDevice()
@@ -192,7 +214,7 @@ void QGLContextPrivate::destroyEglSurfaceForDevice()
 #ifdef Q_WS_X11
         // Make sure we don't call eglDestroySurface on a surface which
         // was created for a different winId:
-        if (paintDevice->devType() == QInternal::Widget) {
+        if (paintDevice && paintDevice->devType() == QInternal::Widget) {
             QGLWidget* w = static_cast<QGLWidget*>(paintDevice);
 
             if (w->d_func()->eglSurfaceWindowId == w->winId())
@@ -206,6 +228,30 @@ void QGLContextPrivate::destroyEglSurfaceForDevice()
     }
 }
 
+EGLSurface QGLContextPrivate::eglSurfaceForDevice() const
+{
+    // If a QPixmapData had to create the QGLContext, we don't have a paintDevice
+    if (!paintDevice)
+        return eglSurface;
+
+#ifdef Q_WS_X11
+    if (paintDevice->devType() == QInternal::Pixmap) {
+        QPixmapData *pmd = static_cast<QPixmap*>(paintDevice)->data_ptr().data();
+        if (pmd->classId() == QPixmapData::X11Class) {
+            QX11PixmapData* x11PixmapData = static_cast<QX11PixmapData*>(pmd);
+            return (EGLSurface)x11PixmapData->gl_surface;
+        }
+    }
+#endif
+
+    if (paintDevice->devType() == QInternal::Pbuffer) {
+        QGLPixelBuffer* pbuf = static_cast<QGLPixelBuffer*>(paintDevice);
+        return pbuf->d_func()->pbuf;
+    }
+
+    return eglSurface;
+}
+
 void QGLWidget::setMouseTracking(bool enable)
 {
     QWidget::setMouseTracking(enable);
diff --git a/src/opengl/qgl_egl_p.h b/src/opengl/qgl_egl_p.h
index c503724..85d7f32 100644
--- a/src/opengl/qgl_egl_p.h
+++ b/src/opengl/qgl_egl_p.h
@@ -54,14 +54,15 @@
 //
 
 #include <QtGui/private/qegl_p.h>
+#include <QtGui/private/qeglcontext_p.h>
+#include <QtGui/private/qeglproperties_p.h>
 
 QT_BEGIN_NAMESPACE
 
 class QGLFormat;
 
-void qt_egl_set_format(QEglProperties& props, int deviceType, const QGLFormat& f);
-void qt_egl_update_format(const QEglContext& context, QGLFormat& format);
-void qt_egl_add_platform_config(QEglProperties& props, QPaintDevice *device);
+void qt_eglproperties_set_glformat(QEglProperties& props, const QGLFormat& format);
+void qt_glformat_from_eglconfig(QGLFormat& format, const EGLConfig config);
 
 QT_END_NAMESPACE
 
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h
index 191131e..1f28b08 100644
--- a/src/opengl/qgl_p.h
+++ b/src/opengl/qgl_p.h
@@ -64,36 +64,8 @@
 #include "qcache.h"
 #include "qglpaintdevice_p.h"
 
-#ifndef QT_OPENGL_ES_1_CL
-#define q_vertexType float
-#define q_vertexTypeEnum GL_FLOAT
-#define f2vt(f)     (f)
-#define vt2f(x)     (x)
-#define i2vt(i)     (float(i))
-#else
-#define FLOAT2X(f)      (int( (f) * (65536)))
-#define X2FLOAT(x)      (float(x) / 65536.0f)
-#define f2vt(f)     FLOAT2X(f)
-#define i2vt(i)     ((i)*65536)
-#define vt2f(x)     X2FLOAT(x)
-#define q_vertexType GLfixed
-#define q_vertexTypeEnum GL_FIXED
-#endif //QT_OPENGL_ES_1_CL
-
 #if defined(QT_OPENGL_ES) || defined(QT_OPENGL_ES_2)
-QT_BEGIN_INCLUDE_NAMESPACE
-
-#if defined(QT_OPENGL_ES_2)
-#   include <GLES2/gl2.h>
-#endif
-
-#if defined(QT_GLES_EGL)
-#   include <GLES/egl.h>
-#else
-#   include <EGL/egl.h>
-#endif
-
-QT_END_INCLUDE_NAMESPACE
+#include <QtGui/private/qegl_p.h>
 #endif
 
 QT_BEGIN_NAMESPACE
@@ -138,11 +110,15 @@ public:
     QGLFormatPrivate()
         : ref(1)
     {
-        opts = QGL::DoubleBuffer | QGL::DepthBuffer | QGL::Rgba | QGL::DirectRendering | QGL::StencilBuffer;
+        opts = QGL::DoubleBuffer | QGL::DepthBuffer | QGL::Rgba | QGL::DirectRendering
+             | QGL::StencilBuffer | QGL::DeprecatedFunctions;
         pln = 0;
         depthSize = accumSize = stencilSize = redSize = greenSize = blueSize = alphaSize = -1;
         numSamples = -1;
         swapInterval = -1;
+        majorVersion = 1;
+        minorVersion = 0;
+        profile = QGLFormat::NoProfile;
     }
     QGLFormatPrivate(const QGLFormatPrivate *other)
         : ref(1),
@@ -156,7 +132,10 @@ public:
           blueSize(other->blueSize),
           alphaSize(other->alphaSize),
           numSamples(other->numSamples),
-          swapInterval(other->swapInterval)
+          swapInterval(other->swapInterval),
+          majorVersion(other->majorVersion),
+          minorVersion(other->minorVersion),
+          profile(other->profile)
     {
     }
     QAtomicInt ref;
@@ -171,6 +150,9 @@ public:
     int alphaSize;
     int numSamples;
     int swapInterval;
+    int majorVersion;
+    int minorVersion;
+    QGLFormat::OpenGLContextProfile profile;
 };
 
 class QGLWidgetPrivate : public QWidgetPrivate
@@ -296,8 +278,6 @@ public:
     Q_DECLARE_FLAGS(Extensions, Extension)
 
     static Extensions glExtensions();
-
-private:
     static Extensions currentContextExtensions();
 };
 
@@ -352,6 +332,10 @@ public:
     void syncGlState(); // Makes sure the GL context's state is what we think it is
 
 #if defined(Q_WS_WIN)
+    void updateFormatVersion();
+#endif
+
+#if defined(Q_WS_WIN)
     HGLRC rc;
     HDC dc;
     WId        win;
@@ -361,9 +345,11 @@ public:
     HDC hbitmap_hdc;
 #endif
 #if defined(QT_OPENGL_ES)
+    bool ownsEglContext;
     QEglContext *eglContext;
     EGLSurface eglSurface;
     void destroyEglSurfaceForDevice();
+    EGLSurface eglSurfaceForDevice() const;
 #elif defined(Q_WS_X11) || defined(Q_WS_MAC)
     void* cx;
 #endif
@@ -375,7 +361,7 @@ public:
     quint32 gpm;
     int screen;
     QHash<QPixmapData*, QPixmap> boundPixmaps;
-    QGLTexture *bindTextureFromNativePixmap(QPixmapData*, const qint64 key,
+    QGLTexture *bindTextureFromNativePixmap(QPixmap*, const qint64 key,
                                             QGLContext::BindOptions options);
     static void destroyGlSurfaceForPixmap(QPixmapData*);
     static void unbindPixmapFromTexture(QPixmapData*);
@@ -536,24 +522,53 @@ public:
     ~QGLTextureCache();
 
     void insert(QGLContext *ctx, qint64 key, QGLTexture *texture, int cost);
-    void remove(quint64 key) { m_cache.remove(key); }
+    inline void remove(quint64 key);
+    inline int size();
+    inline void setMaxCost(int newMax);
+    inline int maxCost();
+    inline QGLTexture* getTexture(quint64 key);
+
     bool remove(QGLContext *ctx, GLuint textureId);
     void removeContextTextures(QGLContext *ctx);
-    int size() { return m_cache.size(); }
-    void setMaxCost(int newMax) { m_cache.setMaxCost(newMax); }
-    int maxCost() {return m_cache.maxCost(); }
-    QGLTexture* getTexture(quint64 key) { return m_cache.object(key); }
-
     static QGLTextureCache *instance();
-    static void deleteIfEmpty();
     static void cleanupTexturesForCacheKey(qint64 cacheKey);
     static void cleanupTexturesForPixampData(QPixmapData* pixmap);
     static void cleanupBeforePixmapDestruction(QPixmapData* pixmap);
 
 private:
     QCache<qint64, QGLTexture> m_cache;
+    QReadWriteLock m_lock;
 };
 
+int QGLTextureCache::size() {
+    QReadLocker locker(&m_lock);
+    return m_cache.size();
+}
+
+void QGLTextureCache::setMaxCost(int newMax)
+{
+    QWriteLocker locker(&m_lock);
+    m_cache.setMaxCost(newMax);
+}
+
+int QGLTextureCache::maxCost()
+{
+    QReadLocker locker(&m_lock);
+    return m_cache.maxCost();
+}
+
+QGLTexture* QGLTextureCache::getTexture(quint64 key)
+{
+    QReadLocker locker(&m_lock);
+    return m_cache.object(key);
+}
+
+void QGLTextureCache::remove(quint64 key)
+{
+    QWriteLocker locker(&m_lock);
+    m_cache.remove(key);
+}
+
 
 extern Q_OPENGL_EXPORT QPaintEngine* qt_qgl_paint_engine();
 
diff --git a/src/opengl/qgl_qws.cpp b/src/opengl/qgl_qws.cpp
index fd17a27..38c3774 100644
--- a/src/opengl/qgl_qws.cpp
+++ b/src/opengl/qgl_qws.cpp
@@ -119,21 +119,6 @@ bool QGLFormat::hasOpenGLOverlays()
         return false;
 }
 
-void qt_egl_add_platform_config(QEglProperties& props, QPaintDevice *device)
-{
-    // Find the QGLScreen for this paint device.
-    QGLScreen *glScreen = glScreenForDevice(device);
-    if (!glScreen) {
-        qWarning("QGLContext::chooseContext(): The screen is not a QGLScreen");
-        return;
-    }
-    int devType = device->devType();
-    if (devType == QInternal::Image)
-        props.setPixelFormat(static_cast<QImage *>(device)->format());
-    else
-        props.setPixelFormat(glScreen->pixelFormat());
-}
-
 static EGLSurface qt_egl_create_surface
     (QEglContext *context, QPaintDevice *device,
      const QEglProperties *properties = 0)
@@ -197,12 +182,14 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
 
     // Get the display and initialize it.
     d->eglContext = new QEglContext();
+    d->ownsEglContext = true;
     d->eglContext->setApi(QEgl::OpenGL);
 
     // Construct the configuration we need for this surface.
     QEglProperties configProps;
-    qt_egl_add_platform_config(configProps, device());
-    qt_egl_set_format(configProps, devType, d->glFormat);
+    qt_eglproperties_set_glformat(configProps, d->glFormat);
+    configProps.setDeviceType(devType);
+    configProps.setPaintDeviceFormat(device());
     configProps.setRenderableType(QEgl::OpenGL);
 
     // Search for a matching configuration, reducing the complexity
@@ -214,7 +201,7 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
     }
 
     // Inform the higher layers about the actual format properties.
-    qt_egl_update_format(*(d->eglContext), d->glFormat);
+    qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
 
     // Create a new context for the configuration.
     if (!d->eglContext->createContext
diff --git a/src/opengl/qgl_win.cpp b/src/opengl/qgl_win.cpp
index ed4814f..5ab944a 100644
--- a/src/opengl/qgl_win.cpp
+++ b/src/opengl/qgl_win.cpp
@@ -122,6 +122,30 @@ typedef bool (APIENTRY *PFNWGLCHOOSEPIXELFORMATARB)(HDC hdc,
 #define WGL_TYPE_COLORINDEX_ARB        0x202C
 #endif
 
+#ifndef WGL_ARB_create_context
+#define WGL_CONTEXT_MAJOR_VERSION_ARB               0x2091
+#define WGL_CONTEXT_MINOR_VERSION_ARB               0x2092
+#define WGL_CONTEXT_LAYER_PLANE_ARB                 0x2093
+#define WGL_CONTEXT_FLAGS_ARB                       0x2094
+#define WGL_CONTEXT_PROFILE_MASK_ARB                0x9126
+#define WGL_CONTEXT_DEBUG_BIT_ARB                   0x0001
+#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB      0x0002
+#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB            0x0001
+#define WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB   0x0002
+// Error codes returned by GetLastError().
+#define ERROR_INVALID_VERSION_ARB                   0x2095
+#define ERROR_INVALID_PROFILE_ARB                   0x2096
+#endif
+
+#ifndef GL_VERSION_3_2
+#define GL_CONTEXT_PROFILE_MASK                     0x9126
+#define GL_MAJOR_VERSION                            0x821B
+#define GL_MINOR_VERSION                            0x821C
+#define GL_NUM_EXTENSIONS                           0x821D
+#define GL_CONTEXT_FLAGS                            0x821E
+#define GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT      0x0001
+#endif
+
 QT_BEGIN_NAMESPACE
 
 class QGLCmapPrivate
@@ -682,8 +706,118 @@ QGLTemporaryContext::~QGLTemporaryContext()
         wglMakeCurrent(d->old_dc, d->old_context);
 }
 
+static bool qgl_create_context(HDC hdc, QGLContextPrivate *d, QGLContextPrivate *shareContext)
+{
+    d->rc = 0;
+
+    typedef HGLRC (APIENTRYP PFNWGLCREATECONTEXTATTRIBSARB)(HDC, HGLRC, const int *);
+    PFNWGLCREATECONTEXTATTRIBSARB wglCreateContextAttribsARB =
+        (PFNWGLCREATECONTEXTATTRIBSARB) wglGetProcAddress("wglCreateContextAttribsARB");
+    if (wglCreateContextAttribsARB) {
+        int attributes[11];
+        int attribIndex = 0;
+        const int major = d->reqFormat.majorVersion();
+        const int minor = d->reqFormat.minorVersion();
+        attributes[attribIndex++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
+        attributes[attribIndex++] = major;
+        attributes[attribIndex++] = WGL_CONTEXT_MINOR_VERSION_ARB;
+        attributes[attribIndex++] = minor;
+
+        if (major >= 3 && !d->reqFormat.testOption(QGL::DeprecatedFunctions)) {
+            attributes[attribIndex++] = WGL_CONTEXT_FLAGS_ARB;
+            attributes[attribIndex++] = WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
+        }
+
+        if ((major == 3 && minor >= 2) || major > 3) {
+            switch (d->reqFormat.profile()) {
+            case QGLFormat::NoProfile:
+                break;
+            case QGLFormat::CoreProfile:
+                attributes[attribIndex++] = WGL_CONTEXT_PROFILE_MASK_ARB;
+                attributes[attribIndex++] = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
+                break;
+            case QGLFormat::CompatibilityProfile:
+                attributes[attribIndex++] = WGL_CONTEXT_PROFILE_MASK_ARB;
+                attributes[attribIndex++] = WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
+                break;
+            default:
+                qWarning("QGLContext::chooseContext(): Context profile not supported.");
+                return false;
+            }
+        }
+
+        if (d->reqFormat.plane() != 0) {
+            attributes[attribIndex++] = WGL_CONTEXT_LAYER_PLANE_ARB;
+            attributes[attribIndex++] = d->reqFormat.plane();
+        }
+
+        attributes[attribIndex++] = 0; // Terminate list.
+        d->rc = wglCreateContextAttribsARB(hdc, shareContext && shareContext->valid
+                                           ? shareContext->rc : 0, attributes);
+        if (d->rc) {
+            if (shareContext)
+                shareContext->sharing = d->sharing = true;
+            return true;
+        }
+    }
+
+    d->rc = wglCreateLayerContext(hdc, d->reqFormat.plane());
+    if (d->rc && shareContext && shareContext->valid)
+        shareContext->sharing = d->sharing = wglShareLists(shareContext->rc, d->rc);
+    return d->rc != 0;
+}
+
+void QGLContextPrivate::updateFormatVersion()
+{
+    const GLubyte *s = glGetString(GL_VERSION);
+
+    if (!(s && s[0] >= '0' && s[0] <= '9' && s[1] == '.' && s[2] >= '0' && s[2] <= '9')) {
+        if (!s)
+            qWarning("QGLContext::chooseContext(): OpenGL version string is null.");
+        else
+            qWarning("QGLContext::chooseContext(): Unexpected OpenGL version string format.");
+        glFormat.setVersion(0, 0);
+        glFormat.setProfile(QGLFormat::NoProfile);
+        glFormat.setOption(QGL::DeprecatedFunctions);
+        return;
+    }
+
+    int major = s[0] - '0';
+    int minor = s[2] - '0';
+    glFormat.setVersion(major, minor);
+
+    if (major < 3) {
+        glFormat.setProfile(QGLFormat::NoProfile);
+        glFormat.setOption(QGL::DeprecatedFunctions);
+    } else {
+        GLint value = 0;
+        if (major > 3 || minor >= 2)
+            glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &value);
+
+        switch (value) {
+        case WGL_CONTEXT_CORE_PROFILE_BIT_ARB:
+            glFormat.setProfile(QGLFormat::CoreProfile);
+            break;
+        case WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
+            glFormat.setProfile(QGLFormat::CompatibilityProfile);
+            break;
+        default:
+            glFormat.setProfile(QGLFormat::NoProfile);
+            break;
+        }
+
+        glGetIntegerv(GL_CONTEXT_FLAGS, &value);
+        if (value & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
+            glFormat.setOption(QGL::NoDeprecatedFunctions);
+        else
+            glFormat.setOption(QGL::DeprecatedFunctions);
+    }
+}
+
 bool QGLContext::chooseContext(const QGLContext* shareContext)
 {
+    QGLContextPrivate *share = shareContext ? const_cast<QGLContext *>(shareContext)->d_func() : 0;
+
     Q_D(QGLContext);
     // workaround for matrox driver:
     // make a cheap call to opengl to force loading of DLL
@@ -741,8 +875,7 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
             goto end;
         }
 
-        d->rc = wglCreateLayerContext(myDc, d->glFormat.plane());
-        if (!d->rc) {
+        if (!qgl_create_context(myDc, d, share)) {
             qwglError("QGLContext::chooseContext()", "CreateLayerContext");
             result = false;
             goto end;
@@ -792,16 +925,7 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
             d->cmap = new QGLCmap(1 << lpfd.cColorBits);
             d->cmap->setEntry(lpfd.crTransparent, qRgb(1, 2, 3));//, QGLCmap::Reserved);
         }
-
-        if (shareContext && shareContext->isValid()) {
-            QGLContext *share = const_cast<QGLContext *>(shareContext);
-            d->sharing = (wglShareLists(shareContext->d_func()->rc, d->rc) != 0);
-            share->d_func()->sharing = d->sharing;
-        }
-
-        goto end;
-    }
-    {
+    } else {
         PIXELFORMATDESCRIPTOR pfd;
         PIXELFORMATDESCRIPTOR realPfd;
         d->pixelFormatId = choosePixelFormat(&pfd, myDc);
@@ -840,17 +964,12 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
             goto end;
         }
 
-        if (!(d->rc = wglCreateLayerContext(myDc, 0))) {
+        if (!qgl_create_context(myDc, d, share)) {
             qwglError("QGLContext::chooseContext()", "wglCreateContext");
             result = false;
             goto end;
         }
 
-        if (shareContext && shareContext->isValid()) {
-            d->sharing = (wglShareLists(shareContext->d_func()->rc, d->rc) != 0);
-            const_cast<QGLContext *>(shareContext)->d_func()->sharing = d->sharing;
-        }
-
         if(!deviceIsPixmap()) {
             QRgb* pal = qgl_create_rgb_palette(&realPfd);
             if (pal) {
@@ -865,6 +984,9 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
 end:
     // vblanking
     wglMakeCurrent(myDc, d->rc);
+    if (d->rc)
+        d->updateFormatVersion();
+
     typedef BOOL (APIENTRYP PFNWGLSWAPINTERVALEXT) (int interval);
     typedef int (APIENTRYP PFNWGLGETSWAPINTERVALEXT) (void);
     PFNWGLSWAPINTERVALEXT wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXT) wglGetProcAddress("wglSwapIntervalEXT");
@@ -1158,8 +1280,9 @@ void QGLContext::reset()
 void QGLContext::makeCurrent()
 {
     Q_D(QGLContext);
-    if (d->rc == wglGetCurrentContext() || !d->valid)        // already current
+    if (d->rc == wglGetCurrentContext() || !d->valid)       // already current
         return;
+
     if (d->win) {
         d->dc = GetDC(d->win);
         if (!d->dc) {
diff --git a/src/opengl/qgl_wince.cpp b/src/opengl/qgl_wince.cpp
index f81115c..47a19b5 100644
--- a/src/opengl/qgl_wince.cpp
+++ b/src/opengl/qgl_wince.cpp
@@ -54,7 +54,8 @@
 
 #include <windows.h>
 
-#include <private/qegl_p.h>
+#include <private/qeglproperties_p.h>
+#include <private/qeglcontext_p.h>
 #include <private/qgl_egl_p.h>
 #include <private/qgl_cl_p.h>
 
@@ -121,16 +122,6 @@ QGLTemporaryContext::~QGLTemporaryContext()
   QGLFormat Win32/WGL-specific code
  *****************************************************************************/
 
-void qt_egl_add_platform_config(QEglProperties& props, QPaintDevice *device)
-{
-    int devType = device->devType();
-    if (devType == QInternal::Image)
-        props.setPixelFormat(static_cast<QImage *>(device)->format());
-    else
-        props.setPixelFormat(QImage::Format_RGB16);
-}
-
-
 static bool opengl32dll = false;
 
 bool QGLFormat::hasOpenGLOverlays()
@@ -154,12 +145,14 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
 
     // Get the display and initialize it.
     d->eglContext = new QEglContext();
+    d->ownsEglContext = true;
     d->eglContext->setApi(QEgl::OpenGL);
 
     // Construct the configuration we need for this surface.
     QEglProperties configProps;
-    qt_egl_add_platform_config(configProps, device());
-    qt_egl_set_format(configProps, devType, d->glFormat);
+    qt_eglproperties_set_glformat(configProps, d->glFormat);
+    configProps.setDeviceType(devType);
+    configProps.setPaintDeviceFormat(device());
     configProps.setRenderableType(QEgl::OpenGL);
 
     // Search for a matching configuration, reducing the complexity
@@ -171,7 +164,7 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
     }
 
     // Inform the higher layers about the actual format properties.
-    qt_egl_update_format(*(d->eglContext), d->glFormat);
+    qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
 
     // Create a new context for the configuration.
     if (!d->eglContext->createContext
diff --git a/src/opengl/qgl_x11.cpp b/src/opengl/qgl_x11.cpp
index f0b06ef5..e1a202f 100644
--- a/src/opengl/qgl_x11.cpp
+++ b/src/opengl/qgl_x11.cpp
@@ -1671,7 +1671,7 @@ static bool qt_resolveTextureFromPixmap(QPaintDevice *paintDevice)
 #endif //defined(GLX_VERSION_1_3) && !defined(Q_OS_HPUX)
 
 
-QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmapData *pmd, const qint64 key,
+QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmap *pixmap, const qint64 key,
                                                            QGLContext::BindOptions options)
 {
 #if !defined(GLX_VERSION_1_3) || defined(Q_OS_HPUX)
@@ -1679,12 +1679,12 @@ QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmapData *pmd, con
 #else
     Q_Q(QGLContext);
 
-    Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pixmap->data_ptr().data());
+    Q_ASSERT(pixmapData->classId() == QPixmapData::X11Class);
 
     if (!qt_resolveTextureFromPixmap(paintDevice))
         return 0;
 
-    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
     const QX11Info &x11Info = pixmapData->xinfo;
 
     // Store the configs (Can be static because configs aren't dependent on current context)
@@ -1753,7 +1753,7 @@ QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmapData *pmd, con
         if (!glxPixmap)
             return 0;
 
-        pixmapData->gl_surface = (Qt::HANDLE)glxPixmap;
+        pixmapData->gl_surface = (void*)glxPixmap;
 
         // Make sure the cleanup hook gets called so we can delete the glx pixmap
         QImagePixmapCleanupHooks::enableCleanupHooks(pixmapData);
diff --git a/src/opengl/qgl_x11egl.cpp b/src/opengl/qgl_x11egl.cpp
index 3d183ee..af0100b 100644
--- a/src/opengl/qgl_x11egl.cpp
+++ b/src/opengl/qgl_x11egl.cpp
@@ -42,20 +42,17 @@
 #include "qgl.h"
 #include <private/qt_x11_p.h>
 #include <private/qpixmap_x11_p.h>
-#include <private/qimagepixmapcleanuphooks_p.h>
 #include <private/qgl_p.h>
 #include <private/qpaintengine_opengl_p.h>
 #include "qgl_egl_p.h"
 #include "qcolormap.h"
 #include <QDebug>
+#include <QPixmap>
 
 
 QT_BEGIN_NAMESPACE
 
 
-bool qt_egl_setup_x11_visual(XVisualInfo &vi, EGLDisplay display, EGLConfig config,
-                             const QX11Info &x11Info, bool useArgbVisual);
-
 /*
     QGLTemporaryContext implementation
 */
@@ -79,12 +76,7 @@ QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
     d->surface = 0;
     int screen = 0;
 
-    d->display = eglGetDisplay(EGLNativeDisplayType(X11->display));
-
-    if (!eglInitialize(d->display, NULL, NULL)) {
-        qWarning("QGLTemporaryContext: Unable to initialize EGL display.");
-        return;
-    }
+    d->display = QEgl::display();
 
     EGLConfig config;
     int numConfigs = 0;
@@ -107,15 +99,7 @@ QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
     int numVisuals;
     EGLint id = 0;
 
-    eglGetConfigAttrib(d->display, config, EGL_NATIVE_VISUAL_ID, &id);
-    if (id == 0) {
-        // EGL_NATIVE_VISUAL_ID is optional and might not be supported
-        // on some implementations - we'll have to do it the hard way
-        QX11Info xinfo;
-        qt_egl_setup_x11_visual(visualInfo, d->display, config, xinfo, false);
-    } else {
-        visualInfo.visualid = id;
-    }
+    visualInfo.visualid = QEgl::getCompatibleVisualId(config);
     vi = XGetVisualInfo(X11->display, VisualIDMask, &visualInfo, &numVisuals);
     if (!vi || numVisuals < 1) {
         qWarning("QGLTemporaryContext: Unable to get X11 visual info id.");
@@ -170,12 +154,6 @@ bool QGLFormat::hasOpenGLOverlays()
     return false;
 }
 
-void qt_egl_add_platform_config(QEglProperties& props, QPaintDevice *device)
-{
-    if (device->devType() == QInternal::Image)
-        props.setPixelFormat(static_cast<QImage *>(device)->format());
-}
-
 // Chooses the EGL config and creates the EGL context
 bool QGLContext::chooseContext(const QGLContext* shareContext)
 {
@@ -186,54 +164,50 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
 
     int devType = device()->devType();
 
-    // Get the display and initialize it.
+    QX11PixmapData *x11PixmapData = 0;
+    if (devType == QInternal::Pixmap) {
+        QPixmapData *pmd = static_cast<QPixmap*>(device())->data_ptr().data();
+        if (pmd->classId() == QPixmapData::X11Class)
+            x11PixmapData = static_cast<QX11PixmapData*>(pmd);
+        else {
+            // TODO: Replace the pixmap's data with a new QX11PixmapData
+            qWarning("WARNING: Creating a QGLContext on a QPixmap is only supported for X11 pixmap backend");
+            return false;
+        }
+    } else if ((devType != QInternal::Widget) && (devType != QInternal::Pbuffer)) {
+        qWarning("WARNING: Creating a QGLContext not supported on device type %d", devType);
+        return false;
+    }
+
+    // Only create the eglContext if we don't already have one:
     if (d->eglContext == 0) {
         d->eglContext = new QEglContext();
+        d->ownsEglContext = true;
         d->eglContext->setApi(QEgl::OpenGL);
 
+        // If the device is a widget with WA_TranslucentBackground set, make sure the glFormat
+        // has the alpha channel option set:
+        if (devType == QInternal::Widget) {
+            QWidget* widget = static_cast<QWidget*>(device());
+            if (widget->testAttribute(Qt::WA_TranslucentBackground))
+                d->glFormat.setAlpha(true);
+        }
+
         // Construct the configuration we need for this surface.
         QEglProperties configProps;
-        qt_egl_set_format(configProps, devType, d->glFormat);
-        qt_egl_add_platform_config(configProps, device());
+        configProps.setDeviceType(devType);
         configProps.setRenderableType(QEgl::OpenGL);
-
-#if We_have_an_EGL_library_which_bothers_to_check_EGL_BUFFER_SIZE
-        if (device()->depth() == 16 && configProps.value(EGL_ALPHA_SIZE) <= 0) {
-            qDebug("Setting EGL_BUFFER_SIZE to 16");
-            configProps.setValue(EGL_BUFFER_SIZE, 16);
-            configProps.setValue(EGL_ALPHA_SIZE, 0);
-        }
+        qt_eglproperties_set_glformat(configProps, d->glFormat);
 
         if (!d->eglContext->chooseConfig(configProps, QEgl::BestPixelFormat)) {
             delete d->eglContext;
             d->eglContext = 0;
             return false;
         }
-#else
-        QEgl::PixelFormatMatch matchType = QEgl::BestPixelFormat;
-        if ((device()->depth() == 16) && configProps.value(EGL_ALPHA_SIZE) == 0) {
-            configProps.setValue(EGL_RED_SIZE, 5);
-            configProps.setValue(EGL_GREEN_SIZE, 6);
-            configProps.setValue(EGL_BLUE_SIZE, 5);
-            configProps.setValue(EGL_ALPHA_SIZE, 0);
-            matchType = QEgl::ExactPixelFormat;
-        }
-
-        // Search for a matching configuration, reducing the complexity
-        // each time until we get something that matches.
-        if (!d->eglContext->chooseConfig(configProps, matchType)) {
-            delete d->eglContext;
-            d->eglContext = 0;
-            return false;
-        }
-#endif
-
-//        qDebug("QGLContext::chooseContext() - using EGL config %d:", d->eglContext->config());
-//        qDebug() << QEglProperties(d->eglContext->config()).toString();
 
         // Create a new context for the configuration.
-        if (!d->eglContext->createContext
-                (shareContext ? shareContext->d_func()->eglContext : 0)) {
+        QEglContext* eglSharedContext = shareContext ? shareContext->d_func()->eglContext : 0;
+        if (!d->eglContext->createContext(eglSharedContext)) {
             delete d->eglContext;
             d->eglContext = 0;
             return false;
@@ -241,15 +215,32 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
         d->sharing = d->eglContext->isSharing();
         if (d->sharing && shareContext)
             const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
+    }
 
-#if defined(EGL_VERSION_1_1)
-        if (d->glFormat.swapInterval() != -1 && devType == QInternal::Widget)
-            eglSwapInterval(d->eglContext->display(), d->glFormat.swapInterval());
-#endif
+    // Inform the higher layers about the actual format properties
+    qt_glformat_from_eglconfig(d->glFormat, d->eglContext->config());
+
+    // Do don't create the EGLSurface for everything.
+    //    QWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
+    //    QGLWidget - yes, create the EGLSurface and store it in QGLContextPrivate::eglSurface
+    //    QPixmap - yes, create the EGLSurface but store it in QX11PixmapData::gl_surface
+    //    QGLPixelBuffer - no, it creates the surface itself and stores it in QGLPixelBufferPrivate::pbuf
+
+    if (devType == QInternal::Widget) {
+        if (d->eglSurface != EGL_NO_SURFACE)
+            eglDestroySurface(d->eglContext->display(), d->eglSurface);
+        d->eglSurface = QEgl::createSurface(device(), d->eglContext->config());
+        XFlush(X11->display);
+        setWindowCreated(true);
     }
 
-    // Inform the higher layers about the actual format properties.
-    qt_egl_update_format(*(d->eglContext), d->glFormat);
+    if (x11PixmapData) {
+        // TODO: Actually check to see if the existing surface can be re-used
+        if (x11PixmapData->gl_surface)
+            eglDestroySurface(d->eglContext->display(), (EGLSurface)x11PixmapData->gl_surface);
+
+        x11PixmapData->gl_surface = (void*)QEgl::createSurface(device(), d->eglContext->config());
+    }
 
     return true;
 }
@@ -281,142 +272,6 @@ void QGLWidget::updateOverlayGL()
     //handle overlay
 }
 
-//#define QT_DEBUG_X11_VISUAL_SELECTION 1
-
-bool qt_egl_setup_x11_visual(XVisualInfo &vi, EGLDisplay display, EGLConfig config, const QX11Info &x11Info, bool useArgbVisual)
-{
-    bool foundVisualIsArgb = useArgbVisual;
-
-#ifdef QT_DEBUG_X11_VISUAL_SELECTION
-    qDebug("qt_egl_setup_x11_visual() - useArgbVisual=%d", useArgbVisual);
-#endif
-
-    memset(&vi, 0, sizeof(XVisualInfo));
-
-    EGLint eglConfigColorSize;
-    eglGetConfigAttrib(display, config, EGL_BUFFER_SIZE, &eglConfigColorSize);
-
-    // Check to see if EGL is suggesting an appropriate visual id:
-    EGLint nativeVisualId;
-    eglGetConfigAttrib(display, config, 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) {
-#if !defined(QT_NO_XRENDER)
-            if (useArgbVisual) {
-                // Check to make sure the visual provided by EGL is ARGB
-                XRenderPictFormat *format;
-                format = XRenderFindVisualFormat(x11Info.display(), chosenVisualInfo->visual);
-                if (format->type == PictTypeDirect && format->direct.alphaMask) {
-#ifdef QT_DEBUG_X11_VISUAL_SELECTION
-                    qDebug("Using ARGB X Visual ID (%d) provided by EGL", (int)vi.visualid);
-#endif
-                    foundVisualIsArgb = true;
-                    vi = *chosenVisualInfo;
-                }
-                else {
-                    qWarning("Warning: EGL suggested using X visual ID %d for config %d, but this is not ARGB",
-                             nativeVisualId, (int)config);
-                    vi.visualid = 0;
-                }
-            } else
-#endif
-            {
-                if (eglConfigColorSize == chosenVisualInfo->depth) {
-#ifdef QT_DEBUG_X11_VISUAL_SELECTION
-                    qDebug("Using opaque X Visual ID (%d) provided by EGL", (int)vi.visualid);
-#endif
-                    vi = *chosenVisualInfo;
-                } else
-                    qWarning("Warning: EGL suggested using X visual ID %d (%d bpp) for config %d (%d bpp), but the depths do not match!",
-                             nativeVisualId, chosenVisualInfo->depth, (int)config, eglConfigColorSize);
-            }
-            XFree(chosenVisualInfo);
-        }
-        else {
-            qWarning("Warning: EGL suggested using X visual ID %d for config %d, but this seems to be invalid!",
-                     nativeVisualId, (int)config);
-            vi.visualid = 0;
-        }
-    }
-
-    // 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
-
-#if !defined(QT_NO_XRENDER)
-    if (vi.visualid == 0 && useArgbVisual) {
-        // Try to use XRender to find an ARGB visual we can use
-        vi.screen  = x11Info.screen();
-        vi.depth   = 32; //### We might at some point (soon) get ARGB4444
-        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];
-                foundVisualIsArgb = true;
-#ifdef QT_DEBUG_X11_VISUAL_SELECTION
-                qDebug("Using X Visual ID (%d) for ARGB visual as provided by XRender", (int)vi.visualid);
-#endif
-                break;
-            }
-        }
-        XFree(matchingVisuals);
-    }
-#endif
-
-    if (vi.visualid == 0) {
-        EGLint depth;
-        eglGetConfigAttrib(display, config, 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)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 false;
-            } else
-                qWarning("         - Falling back to X11 suggested depth (%d)", depth);
-        }
-#ifdef QT_DEBUG_X11_VISUAL_SELECTION
-        else
-            qDebug("Using X Visual ID (%d) for EGL provided depth (%d)", (int)vi.visualid, depth);
-#endif
-
-        // Don't try to use ARGB now unless the visual is 32-bit - even then it might stil fail :-(
-        if (useArgbVisual)
-            foundVisualIsArgb = vi.depth == 32; //### We might at some point (soon) get ARGB4444
-    }
-
-#ifdef QT_DEBUG_X11_VISUAL_SELECTION
-    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);
-#endif
-    return foundVisualIsArgb;
-}
-
 void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext, bool deleteOldContext)
 {
     Q_D(QGLWidget);
@@ -434,20 +289,6 @@ void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext,
     QGLContext* oldcx = d->glcx;
     d->glcx = context;
 
-    if (parentWidget()) {
-        // force creation of delay-created widgets
-        parentWidget()->winId();
-        if (parentWidget()->x11Info().screen() != x11Info().screen())
-            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;
-    const bool tryArgbVisual = testAttribute(Qt::WA_TranslucentBackground) || fmt.alpha();
-    if (tryArgbVisual && fmt.alphaBufferSize() == -1)
-        fmt.setAlphaBufferSize(1);
-
     bool createFailed = false;
     if (!d->glcx->isValid()) {
         // Create the QGLContext here, which in turn chooses the EGL config
@@ -461,63 +302,8 @@ void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext,
         return;
     }
 
-    if (d->glcx->windowCreated() || d->glcx->deviceIsPixmap()) {
-        if (deleteOldContext)
-            delete oldcx;
-        return;
-    }
-
-    bool visible = isVisible();
-    if (visible)
-        hide();
-
-    XVisualInfo vi;
-    QEglContext *eglContext = d->glcx->d_func()->eglContext;
-    bool usingArgbVisual = qt_egl_setup_x11_visual(vi, eglContext->display(), eglContext->config(),
-                                                   x11Info(), tryArgbVisual);
-
-    XSetWindowAttributes a;
-
-    Window p = RootWindow(x11Info().display(), x11Info().screen());
-    if (parentWidget())
-        p = parentWidget()->winId();
-
-    QColormap colmap = QColormap::instance(vi.screen);
-    a.background_pixel = colmap.pixel(palette().color(backgroundRole()));
-    a.border_pixel = colmap.pixel(Qt::black);
 
-    unsigned int valueMask = CWBackPixel|CWBorderPixel;
-    if (usingArgbVisual) {
-        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;
-    oldcx = 0;
-
-    create(w); // Create with the ID of the window we've just created
-
-
-    // Create the EGL surface to draw into.
-    QGLContextPrivate *ctxpriv = d->glcx->d_func();
-    ctxpriv->eglSurface = ctxpriv->eglContext->createSurface(this);
-    if (ctxpriv->eglSurface == EGL_NO_SURFACE) {
-        delete ctxpriv->eglContext;
-        ctxpriv->eglContext = 0;
-        return;
-    }
-
-    d->eglSurfaceWindowId = w; // Remember the window id we created the surface for
-
-    if (visible)
-        show();
-
-    XFlush(X11->display);
-    d->glcx->setWindowCreated(true);
+    d->eglSurfaceWindowId = winId(); // Remember the window id we created the surface for
 }
 
 void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget* shareWidget)
@@ -526,7 +312,7 @@ void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget* shareWidget)
 
     initContext(context, shareWidget);
 
-    if(q->isValid() && glcx->format().hasOverlay()) {
+    if (q->isValid() && glcx->format().hasOverlay()) {
         //no overlay
         qWarning("QtOpenGL ES doesn't currently support overlays");
     }
@@ -567,116 +353,8 @@ void QGLWidgetPrivate::recreateEglSurface(bool force)
     }
 }
 
-// Selects which configs should be used
-EGLConfig Q_OPENGL_EXPORT qt_chooseEGLConfigForPixmap(bool hasAlpha, bool readOnly)
-{
-    // Cache the configs we select as they wont change:
-    static EGLConfig roPixmapRGBConfig = 0;
-    static EGLConfig roPixmapRGBAConfig = 0;
-    static EGLConfig rwPixmapRGBConfig = 0;
-    static EGLConfig rwPixmapRGBAConfig = 0;
-
-    EGLConfig* targetConfig;
-
-    if (hasAlpha) {
-        if (readOnly)
-            targetConfig = &roPixmapRGBAConfig;
-        else
-            targetConfig = &rwPixmapRGBAConfig;
-    }
-    else {
-        if (readOnly)
-            targetConfig = &roPixmapRGBConfig;
-        else
-            targetConfig = &rwPixmapRGBConfig;
-    }
-
-    if (*targetConfig == 0) {
-        QEglProperties configAttribs;
-        configAttribs.setValue(EGL_SURFACE_TYPE, EGL_PIXMAP_BIT);
-        configAttribs.setRenderableType(QEgl::OpenGL);
-        if (hasAlpha)
-            configAttribs.setValue(EGL_BIND_TO_TEXTURE_RGBA, EGL_TRUE);
-        else
-            configAttribs.setValue(EGL_BIND_TO_TEXTURE_RGB, EGL_TRUE);
-
-        // If this is going to be a render target, it needs to have a depth, stencil & sample buffer
-        if (!readOnly) {
-            configAttribs.setValue(EGL_DEPTH_SIZE, 1);
-            configAttribs.setValue(EGL_STENCIL_SIZE, 1);
-            configAttribs.setValue(EGL_SAMPLE_BUFFERS, 1);
-        }
-
-        EGLint configCount = 0;
-        do {
-            eglChooseConfig(QEglContext::display(), configAttribs.properties(), targetConfig, 1, &configCount);
-            if (configCount > 0) {
-                // Got one
-                qDebug() << "Found an" << (hasAlpha ? "ARGB" : "RGB") << (readOnly ? "readonly" : "target" )
-                         << "config (" << int(*targetConfig) << ") to create a pixmap surface:";
-
-//                QEglProperties configProps(*targetConfig);
-//                qDebug() << configProps.toString();
-                break;
-            }
-            qWarning("choosePixmapConfig() - No suitible config found, reducing requirements");
-        } while (configAttribs.reduceConfiguration());
-    }
-
-    if (*targetConfig == 0)
-        qWarning("choosePixmapConfig() - Couldn't find a suitable config");
-
-    return *targetConfig;
-}
-
-bool Q_OPENGL_EXPORT qt_createEGLSurfaceForPixmap(QPixmapData* pmd, bool readOnly)
-{
-    Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
-    QX11PixmapData* pixmapData = static_cast<QX11PixmapData*>(pmd);
-
-    bool hasAlpha = pixmapData->hasAlphaChannel();
-
-    EGLConfig pixmapConfig = qt_chooseEGLConfigForPixmap(hasAlpha, readOnly);
-
-    QEglProperties pixmapAttribs;
-
-    // If the pixmap can't be bound to a texture, it's pretty useless
-    pixmapAttribs.setValue(EGL_TEXTURE_TARGET, EGL_TEXTURE_2D);
-    if (hasAlpha)
-        pixmapAttribs.setValue(EGL_TEXTURE_FORMAT, EGL_TEXTURE_RGBA);
-    else
-        pixmapAttribs.setValue(EGL_TEXTURE_FORMAT, EGL_TEXTURE_RGB);
-
-    EGLSurface pixmapSurface;
-    pixmapSurface = eglCreatePixmapSurface(QEglContext::display(),
-                                           pixmapConfig,
-                                           (EGLNativePixmapType) pixmapData->handle(),
-                                           pixmapAttribs.properties());
-//    qDebug("qt_createEGLSurfaceForPixmap() created surface 0x%x for pixmap 0x%x",
-//           pixmapSurface, pixmapData->handle());
-    if (pixmapSurface == EGL_NO_SURFACE) {
-        qWarning() << "Failed to create a pixmap surface using config" << (int)pixmapConfig
-                   << ":" << QEglContext::errorString(eglGetError());
-        return false;
-    }
-
-    static bool doneOnce = false;
-    if (!doneOnce) {
-        // Make sure QGLTextureCache is instanciated so it can install cleanup hooks
-        // which cleanup the EGL surface.
-        QGLTextureCache::instance();
-        doneOnce = true;
-    }
-
-    Q_ASSERT(sizeof(Qt::HANDLE) >= sizeof(EGLSurface)); // Just to make totally sure!
-    pixmapData->gl_surface = (Qt::HANDLE)pixmapSurface;
-    QImagePixmapCleanupHooks::enableCleanupHooks(pixmapData); // Make sure the cleanup hook gets called
-
-    return true;
-}
-
 
-QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmapData* pd, const qint64 key,
+QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmap *pixmap, const qint64 key,
                                                            QGLContext::BindOptions options)
 {
     Q_Q(QGLContext);
@@ -685,82 +363,160 @@ QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmapData* pd, cons
     if (!(options & QGLContext::CanFlipNativePixmapBindOption))
         return 0;
 
-    Q_ASSERT(pd->classId() == QPixmapData::X11Class);
 
     static bool checkedForTFP = false;
     static bool haveTFP = false;
+    static bool checkedForEglImageTFP = false;
+    static bool haveEglImageTFP = false;
+
+
+    if (!checkedForEglImageTFP) {
+        checkedForEglImageTFP = true;
+
+        // We need to be able to create an EGLImage from a native pixmap, which was split
+        // into a seperate EGL extension, EGL_KHR_image_pixmap. It is possible to have
+        // eglCreateImageKHR & eglDestroyImageKHR without support for pixmaps, so we must
+        // check we have the EGLImage from pixmap functionality.
+        if (QEgl::hasExtension("EGL_KHR_image") || QEgl::hasExtension("EGL_KHR_image_pixmap")) {
+            Q_ASSERT(eglCreateImageKHR);
+            Q_ASSERT(eglDestroyImageKHR);
+
+            // Being able to create an EGLImage from a native pixmap is also pretty useless
+            // without the ability to bind that EGLImage as a texture, which is provided by
+            // the GL_OES_EGL_image extension, which we try to resolve here:
+            haveEglImageTFP = qt_resolve_eglimage_gl_extensions(q);
+
+            if (haveEglImageTFP)
+                qDebug("Found EGL_KHR_image_pixmap & GL_OES_EGL_image extensions (preferred method)!");
+        }
+    }
 
     if (!checkedForTFP) {
         // Check for texture_from_pixmap egl extension
         checkedForTFP = true;
-        if (eglContext->hasExtension("EGL_NOKIA_texture_from_pixmap") ||
-            eglContext->hasExtension("EGL_EXT_texture_from_pixmap"))
+        if (QEgl::hasExtension("EGL_NOKIA_texture_from_pixmap") ||
+            QEgl::hasExtension("EGL_EXT_texture_from_pixmap"))
         {
             qDebug("Found texture_from_pixmap EGL extension!");
             haveTFP = true;
         }
     }
 
-    if (!haveTFP)
+    if (!haveTFP && !haveEglImageTFP)
         return 0;
 
-    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pd);
 
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pixmap->data_ptr().data());
+    Q_ASSERT(pixmapData->classId() == QPixmapData::X11Class);
     bool hasAlpha = pixmapData->hasAlphaChannel();
+    bool pixmapHasValidSurface = false;
+    bool textureIsBound = false;
+    GLuint textureId;
+    glGenTextures(1, &textureId);
+    glBindTexture(GL_TEXTURE_2D, textureId);
 
-    // Check to see if the surface is still valid
-    if (pixmapData->gl_surface &&
-        hasAlpha != (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
+    if (haveTFP && pixmapData->gl_surface &&
+        hasAlpha == (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
     {
-        // Surface is invalid!
-        destroyGlSurfaceForPixmap(pixmapData);
+        pixmapHasValidSurface = true;
     }
 
-    if (pixmapData->gl_surface == 0) {
-        bool success = qt_createEGLSurfaceForPixmap(pixmapData, true);
-        if (!success) {
-            haveTFP = false;
-            return 0;
-        }
+    // If we already have a valid EGL surface for the pixmap, we should use it
+    if (pixmapHasValidSurface) {
+        EGLBoolean success;
+        success = eglBindTexImage(QEgl::display(), (EGLSurface)pixmapData->gl_surface, EGL_BACK_BUFFER);
+        if (success == EGL_FALSE) {
+            qWarning() << "eglBindTexImage() failed:" << QEgl::errorString();
+            eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
+            pixmapData->gl_surface = (void*)EGL_NO_SURFACE;
+        } else
+            textureIsBound = true;
     }
 
-    Q_ASSERT(pixmapData->gl_surface);
+    // If the pixmap doesn't already have a valid surface, try binding it via EGLImage
+    // first, as going through EGLImage should be faster and better supported:
+    if (!textureIsBound && haveEglImageTFP) {
+        Q_ASSERT(eglCreateImageKHR);
 
-    GLuint textureId;
-    glGenTextures(1, &textureId);
-    glBindTexture(GL_TEXTURE_2D, textureId);
+        EGLImageKHR eglImage;
 
-    // bind the egl pixmap surface to a texture
-    EGLBoolean success;
-    success = eglBindTexImage(eglContext->display(), (EGLSurface)pixmapData->gl_surface, EGL_BACK_BUFFER);
-    if (success == EGL_FALSE) {
-        qWarning() << "eglBindTexImage() failed:" << eglContext->errorString(eglGetError());
-        eglDestroySurface(eglContext->display(), (EGLSurface)pixmapData->gl_surface);
-        pixmapData->gl_surface = (Qt::HANDLE)EGL_NO_SURFACE;
-        haveTFP = false;
-        return 0;
+        EGLint attribs[] = {
+            EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
+            EGL_NONE
+        };
+        eglImage = eglCreateImageKHR(QEgl::display(), EGL_NO_CONTEXT, EGL_NATIVE_PIXMAP_KHR,
+                                     (EGLClientBuffer)QEgl::nativePixmap(pixmap), attribs);
+
+        QGLContext* ctx = q;
+        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, eglImage);
+
+        GLint err = glGetError();
+        if (err == GL_NO_ERROR)
+            textureIsBound = true;
+
+        // Once the egl image is bound, the texture becomes a new sibling image and we can safely
+        // destroy the EGLImage we created for the pixmap:
+        if (eglImage != EGL_NO_IMAGE_KHR)
+            eglDestroyImageKHR(QEgl::display(), eglImage);
     }
 
-    QGLTexture *texture = new QGLTexture(q, textureId, GL_TEXTURE_2D, options);
-    pixmapData->flags |= QX11PixmapData::InvertedWhenBoundToTexture;
+    if (!textureIsBound && haveTFP) {
+        // Check to see if the surface is still valid
+        if (pixmapData->gl_surface &&
+            hasAlpha != (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
+        {
+            // Surface is invalid!
+            destroyGlSurfaceForPixmap(pixmapData);
+        }
 
-    // We assume the cost of bound pixmaps is zero
-    QGLTextureCache::instance()->insert(q, key, texture, 0);
+        if (pixmapData->gl_surface == 0) {
+            EGLConfig config = QEgl::defaultConfig(QInternal::Pixmap,
+                                                   QEgl::OpenGL,
+                                                   hasAlpha ? QEgl::Translucent : QEgl::NoOptions);
+
+            pixmapData->gl_surface = (void*)QEgl::createSurface(pixmap, config);
+            if (pixmapData->gl_surface == (void*)EGL_NO_SURFACE)
+                return false;
+        }
+
+        EGLBoolean success;
+        success = eglBindTexImage(QEgl::display(), (EGLSurface)pixmapData->gl_surface, EGL_BACK_BUFFER);
+        if (success == EGL_FALSE) {
+            qWarning() << "eglBindTexImage() failed:" << QEgl::errorString();
+            eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
+            pixmapData->gl_surface = (void*)EGL_NO_SURFACE;
+            haveTFP = false; // If TFP isn't working, disable it's use
+        } else
+            textureIsBound = true;
+    }
+
+    QGLTexture *texture = 0;
+
+    if (textureIsBound) {
+        texture = new QGLTexture(q, textureId, GL_TEXTURE_2D, options);
+        pixmapData->flags |= QX11PixmapData::InvertedWhenBoundToTexture;
+
+        // We assume the cost of bound pixmaps is zero
+        QGLTextureCache::instance()->insert(q, key, texture, 0);
+
+        glBindTexture(GL_TEXTURE_2D, textureId);
+    } else
+        glDeleteTextures(1, &textureId);
 
-    glBindTexture(GL_TEXTURE_2D, textureId);
     return texture;
 }
 
+
 void QGLContextPrivate::destroyGlSurfaceForPixmap(QPixmapData* pmd)
 {
     Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
     QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
     if (pixmapData->gl_surface) {
         EGLBoolean success;
-        success = eglDestroySurface(QEglContext::display(), (EGLSurface)pixmapData->gl_surface);
+        success = eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
         if (success == EGL_FALSE) {
             qWarning() << "destroyGlSurfaceForPixmap() - Error deleting surface: "
-                       << QEglContext::errorString(eglGetError());
+                       << QEgl::errorString();
         }
         pixmapData->gl_surface = 0;
     }
@@ -772,12 +528,12 @@ void QGLContextPrivate::unbindPixmapFromTexture(QPixmapData* pmd)
     QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
     if (pixmapData->gl_surface) {
         EGLBoolean success;
-        success = eglReleaseTexImage(QEglContext::display(),
+        success = eglReleaseTexImage(QEgl::display(),
                                      (EGLSurface)pixmapData->gl_surface,
                                      EGL_BACK_BUFFER);
         if (success == EGL_FALSE) {
             qWarning() << "unbindPixmapFromTexture() - Unable to release bound texture: "
-                       << QEglContext::errorString(eglGetError());
+                       << QEgl::errorString();
         }
     }
 }
diff --git a/src/opengl/qglbuffer.cpp b/src/opengl/qglbuffer.cpp
new file mode 100644
index 0000000..223243c
--- /dev/null
+++ b/src/opengl/qglbuffer.cpp
@@ -0,0 +1,502 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtOpenGL/qgl.h>
+#include <QtOpenGL/private/qgl_p.h>
+#include <QtOpenGL/private/qglextensions_p.h>
+#include "qglbuffer.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QGLBuffer
+    \brief The QGLBuffer class provides functions for creating and managing GL buffer objects.
+    \since 4.7
+    \ingroup painting-3D
+
+    Buffer objects are created in the GL server so that the
+    client application can avoid uploading vertices, indices,
+    texture image data, etc every time they are needed.
+*/
+
+/*!
+    \enum QGLBuffer::Type
+    This enum defines the type of GL buffer object to create with QGLBuffer.
+
+    \value VertexBuffer Vertex buffer object for use when specifying
+           vertex arrays.
+    \value IndexBuffer Index buffer object for use with \c{glDrawElements()}.
+    \value PixelPackBuffer Pixel pack buffer object for reading pixel
+           data from the GL server (for example, with \c{glReadPixels()}).
+           Not supported under OpenGL/ES.
+    \value PixelUnpackBuffer Pixel unpack buffer object for writing pixel
+           data to the GL server (for example, with \c{glTexImage2D()}).
+           Not supported under OpenGL/ES.
+*/
+
+/*!
+    \enum QGLBuffer::UsagePattern
+    This enum defines the usage pattern of a QGLBuffer object.
+
+    \value StreamDraw The data will be set once and used a few times
+           for drawing operations.  Under OpenGL/ES 1.1 this is identical
+           to StaticDraw.
+    \value StreamRead The data will be set once and used a few times
+           for reading data back from the GL server.  Not supported
+           under OpenGL/ES.
+    \value StreamCopy The data will be set once and used a few times
+           for reading data back from the GL server for use in further
+           drawing operations.  Not supported under OpenGL/ES.
+    \value StaticDraw The data will be set once and used many times
+           for drawing operations.
+    \value StaticRead The data will be set once and used many times
+           for reading data back from the GL server.  Not supported
+           under OpenGL/ES.
+    \value StaticCopy The data will be set once and used many times
+           for reading data back from the GL server for use in further
+           drawing operations.  Not supported under OpenGL/ES.
+    \value DynamicDraw The data will be modified repeatedly and used
+           many times for drawing operations.
+    \value DynamicRead The data will be modified repeatedly and used
+           many times for reading data back from the GL server.
+           Not supported under OpenGL/ES.
+    \value DynamicCopy The data will be modified repeatedly and used
+           many times for reading data back from the GL server for
+           use in further drawing operations.  Not supported under OpenGL/ES.
+*/
+
+/*!
+    \enum QGLBuffer::Access
+    This enum defines the access mode for QGLBuffer::map().
+
+    \value ReadOnly The buffer will be mapped for reading only.
+    \value WriteOnly The buffer will be mapped for writing only.
+    \value ReadWrite The buffer will be mapped for reading and writing.
+*/
+
+class QGLBufferPrivate
+{
+public:
+    QGLBufferPrivate(QGLBuffer::Type t)
+        : type(t),
+          guard(0),
+          usagePattern(QGLBuffer::StaticDraw),
+          actualUsagePattern(QGLBuffer::StaticDraw)
+    {
+    }
+
+    QGLBuffer::Type type;
+    QGLSharedResourceGuard guard;
+    QGLBuffer::UsagePattern usagePattern;
+    QGLBuffer::UsagePattern actualUsagePattern;
+};
+
+/*!
+    Constructs a new buffer object of \a type.
+
+    Note: this constructor just creates the QGLBuffer instance.  The actual
+    buffer object in the GL server is not created until create() is called.
+
+    \sa create()
+*/
+QGLBuffer::QGLBuffer(QGLBuffer::Type type)
+    : d_ptr(new QGLBufferPrivate(type))
+{
+}
+
+#define ctx d->guard.context()
+
+/*!
+    Destroys this buffer object, including the storage being
+    used in the GL server.
+*/
+QGLBuffer::~QGLBuffer()
+{
+    Q_D(QGLBuffer);
+    GLuint bufferId = d->guard.id();
+    if (bufferId) {
+        // Switch to the original creating context to destroy it.
+        QGLShareContextScope scope(d->guard.context());
+        glDeleteBuffers(1, &bufferId);
+    }
+}
+
+/*!
+    Returns the type of buffer represented by this object.
+*/
+QGLBuffer::Type QGLBuffer::type() const
+{
+    Q_D(const QGLBuffer);
+    return d->type;
+}
+
+/*!
+    Returns the usage pattern for this buffer object.
+    The default value is StaticDraw.
+
+    \sa setUsagePattern()
+*/
+QGLBuffer::UsagePattern QGLBuffer::usagePattern() const
+{
+    Q_D(const QGLBuffer);
+    return d->usagePattern;
+}
+
+/*!
+    Sets the usage pattern for this buffer object to \a value.
+    This function must be called before allocate() or write().
+
+    \sa usagePattern(), allocate(), write()
+*/
+void QGLBuffer::setUsagePattern(QGLBuffer::UsagePattern value)
+{
+    Q_D(QGLBuffer);
+#if defined(QT_OPENGL_ES_1)
+    // OpenGL/ES 1.1 does not support GL_STREAM_DRAW, so use GL_STATIC_DRAW.
+    // OpenGL/ES 2.0 does support GL_STREAM_DRAW.
+    d->usagePattern = value;
+    if (value == StreamDraw)
+        d->actualUsagePattern = StaticDraw;
+    else
+        d->actualUsagePattern = value;
+#else
+    d->usagePattern = d->actualUsagePattern = value;
+#endif
+}
+
+#undef ctx
+
+/*!
+    Creates the buffer object in the GL server.  Returns true if
+    the object was created; false otherwise.
+
+    This function must be called with a current QGLContext.
+    The buffer will be bound to and can only be used in
+    that context (or any other context that is shared with it).
+
+    This function will return false if the GL implementation
+    does not support buffers, or there is no current QGLContext.
+
+    \sa isCreated(), allocate(), write()
+*/
+bool QGLBuffer::create()
+{
+    Q_D(QGLBuffer);
+    if (d->guard.id())
+        return true;
+    const QGLContext *ctx = QGLContext::currentContext();
+    if (ctx) {
+        if (!qt_resolve_buffer_extensions(const_cast<QGLContext *>(ctx)))
+            return false;
+        GLuint bufferId = 0;
+        glGenBuffers(1, &bufferId);
+        if (bufferId) {
+            d->guard.setContext(ctx);
+            d->guard.setId(bufferId);
+            return true;
+        }
+    }
+    return false;
+}
+
+#define ctx d->guard.context()
+
+/*!
+    Returns true if this buffer has been created; false otherwise.
+
+    \sa create()
+*/
+bool QGLBuffer::isCreated() const
+{
+    Q_D(const QGLBuffer);
+    return d->guard.id() != 0;
+}
+
+/*!
+    Reads the \a count bytes in this buffer starting at \a offset
+    into \a data.  Returns true on success; false if reading from
+    the buffer is not supported.  Buffer reading is not supported
+    under OpenGL/ES.
+
+    It is assumed that this buffer has been bound to the current context.
+
+    \sa write(), bind()
+*/
+bool QGLBuffer::read(int offset, void *data, int count)
+{
+#if !defined(QT_OPENGL_ES)
+    Q_D(QGLBuffer);
+    if (!glGetBufferSubData || !d->guard.id())
+        return false;
+    while (glGetError() != GL_NO_ERROR) ; // Clear error state.
+    glGetBufferSubData(d->type, offset, count, data);
+    return glGetError() == GL_NO_ERROR;
+#else
+    Q_UNUSED(offset);
+    Q_UNUSED(data);
+    Q_UNUSED(count);
+    return false;
+#endif
+}
+
+/*!
+    Replaces the \a count bytes of this buffer starting at \a offset
+    with the contents of \a data.  Any other bytes in the buffer
+    will be left unmodified.
+
+    It is assumed that create() has been called on this buffer and that
+    it has been bound to the current context.
+
+    \sa create(), read(), allocate()
+*/
+void QGLBuffer::write(int offset, const void *data, int count)
+{
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::allocate(): buffer not created");
+#endif
+    Q_D(QGLBuffer);
+    if (d->guard.id())
+        glBufferSubData(d->type, offset, count, data);
+}
+
+/*!
+    Allocates \a count bytes of space to the buffer, initialized to
+    the contents of \a data.  Any previous contents will be removed.
+
+    It is assumed that create() has been called on this buffer and that
+    it has been bound to the current context.
+
+    \sa create(), read(), write()
+*/
+void QGLBuffer::allocate(const void *data, int count)
+{
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::allocate(): buffer not created");
+#endif
+    Q_D(QGLBuffer);
+    if (d->guard.id())
+        glBufferData(d->type, count, data, d->actualUsagePattern);
+}
+
+/*!
+    \fn void QGLBuffer::allocate(int count)
+    \overload
+
+    Allocates \a count bytes of space to the buffer.  Any previous
+    contents will be removed.
+
+    It is assumed that create() has been called on this buffer and that
+    it has been bound to the current context.
+
+    \sa create(), write()
+*/
+
+/*!
+    Binds the buffer associated with this object to the current
+    GL context.  Returns false if binding was not possible, usually because
+    type() is not supported on this GL implementation.
+
+    The buffer must be bound to the same QGLContext current when create()
+    was called, or to another QGLContext that is sharing with it.
+    Otherwise, false will be returned from this function.
+
+    \sa release(), create()
+*/
+bool QGLBuffer::bind() const
+{
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::bind(): buffer not created");
+#endif
+    Q_D(const QGLBuffer);
+    GLuint bufferId = d->guard.id();
+    if (bufferId) {
+        if (!QGLContext::areSharing(QGLContext::currentContext(),
+                                    d->guard.context())) {
+#ifndef QT_NO_DEBUG
+            qWarning("QGLBuffer::bind: buffer is not valid in the current context");
+#endif
+            return false;
+        }
+        glBindBuffer(d->type, bufferId);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+/*!
+    Releases the buffer associated with this object from the
+    current GL context.
+
+    This function must be called with the same QGLContext current
+    as when bind() was called on the buffer.
+
+    \sa bind()
+*/
+void QGLBuffer::release() const
+{
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::release(): buffer not created");
+#endif
+    Q_D(const QGLBuffer);
+    if (d->guard.id())
+        glBindBuffer(d->type, 0);
+}
+
+#undef ctx
+
+/*!
+    Releases the buffer associated with \a type in the current
+    QGLContext.
+
+    This function is a direct call to \c{glBindBuffer(type, 0)}
+    for use when the caller does not know which QGLBuffer has
+    been bound to the context but wants to make sure that it
+    is released.
+
+    \code
+    QGLBuffer::release(QGLBuffer::VertexBuffer);
+    \endcode
+*/
+void QGLBuffer::release(QGLBuffer::Type type)
+{
+    const QGLContext *ctx = QGLContext::currentContext();
+    if (ctx && qt_resolve_buffer_extensions(const_cast<QGLContext *>(ctx)))
+        glBindBuffer(GLenum(type), 0);
+}
+
+#define ctx d->guard.context()
+
+/*!
+    Returns the GL identifier associated with this buffer; zero if
+    the buffer has not been created.
+
+    \sa isCreated()
+*/
+GLuint QGLBuffer::bufferId() const
+{
+    Q_D(const QGLBuffer);
+    return d->guard.id();
+}
+
+#ifndef GL_BUFFER_SIZE
+#define GL_BUFFER_SIZE 0x8764
+#endif
+
+/*!
+    Returns the size of the data in this buffer, for reading operations.
+    Returns -1 if fetching the buffer size is not supported, or the
+    buffer has not been created.
+
+    It is assumed that this buffer has been bound to the current context.
+
+    \sa isCreated(), bind()
+*/
+int QGLBuffer::size() const
+{
+    Q_D(const QGLBuffer);
+    if (!d->guard.id())
+        return -1;
+    GLint value = -1;
+    glGetBufferParameteriv(d->type, GL_BUFFER_SIZE, &value);
+    return value;
+}
+
+/*!
+    Maps the contents of this buffer into the application's memory
+    space and returns a pointer to it.  Returns null if memory
+    mapping is not possible.  The \a access parameter indicates the
+    type of access to be performed.
+
+    It is assumed that create() has been called on this buffer and that
+    it has been bound to the current context.
+
+    This function is only supported under OpenGL/ES if the
+    \c{GL_OES_mapbuffer} extension is present.
+
+    \sa unmap(), create(), bind()
+*/
+void *QGLBuffer::map(QGLBuffer::Access access)
+{
+    Q_D(QGLBuffer);
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::map(): buffer not created");
+#endif
+    if (!d->guard.id())
+        return 0;
+    if (!glMapBufferARB)
+        return 0;
+    return glMapBufferARB(d->type, access);
+}
+
+/*!
+    Unmaps the buffer after it was mapped into the application's
+    memory space with a previous call to map().  Returns true if
+    the unmap succeeded; false otherwise.
+
+    It is assumed that this buffer has been bound to the current context,
+    and that it was previously mapped with map().
+
+    This function is only supported under OpenGL/ES if the
+    \c{GL_OES_mapbuffer} extension is present.
+
+    \sa map()
+*/
+bool QGLBuffer::unmap()
+{
+    Q_D(QGLBuffer);
+#ifndef QT_NO_DEBUG
+    if (!isCreated())
+        qWarning("QGLBuffer::unmap(): buffer not created");
+#endif
+    if (!d->guard.id())
+        return false;
+    if (!glUnmapBufferARB)
+        return false;
+    return glUnmapBufferARB(d->type) == GL_TRUE;
+}
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qglbuffer.h b/src/opengl/qglbuffer.h
new file mode 100644
index 0000000..2fe1f1f
--- /dev/null
+++ b/src/opengl/qglbuffer.h
@@ -0,0 +1,127 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGLBUFFER_H
+#define QGLBUFFER_H
+
+#include <QtCore/qscopedpointer.h>
+#include <QtOpenGL/qgl.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class QGLBufferPrivate;
+
+class Q_OPENGL_EXPORT QGLBuffer
+{
+public:
+    enum Type
+    {
+        VertexBuffer        = 0x8892, // GL_ARRAY_BUFFER
+        IndexBuffer         = 0x8893, // GL_ELEMENT_ARRAY_BUFFER
+        PixelPackBuffer     = 0x88EB, // GL_PIXEL_PACK_BUFFER
+        PixelUnpackBuffer   = 0x88EC  // GL_PIXEL_UNPACK_BUFFER
+    };
+
+    explicit QGLBuffer(QGLBuffer::Type type);
+    ~QGLBuffer();
+
+    enum UsagePattern
+    {
+        StreamDraw          = 0x88E0, // GL_STREAM_DRAW
+        StreamRead          = 0x88E1, // GL_STREAM_READ
+        StreamCopy          = 0x88E2, // GL_STREAM_COPY
+        StaticDraw          = 0x88E4, // GL_STATIC_DRAW
+        StaticRead          = 0x88E5, // GL_STATIC_READ
+        StaticCopy          = 0x88E6, // GL_STATIC_COPY
+        DynamicDraw         = 0x88E8, // GL_DYNAMIC_DRAW
+        DynamicRead         = 0x88E9, // GL_DYNAMIC_READ
+        DynamicCopy         = 0x88EA  // GL_DYNAMIC_COPY
+    };
+
+    enum Access
+    {
+        ReadOnly            = 0x88B8, // GL_READ_ONLY
+        WriteOnly           = 0x88B9, // GL_WRITE_ONLY
+        ReadWrite           = 0x88BA  // GL_READ_WRITE
+    };
+
+    QGLBuffer::Type type() const;
+
+    QGLBuffer::UsagePattern usagePattern() const;
+    void setUsagePattern(QGLBuffer::UsagePattern value);
+
+    bool create();
+    bool isCreated() const;
+
+    bool bind() const;
+    void release() const;
+
+    static void release(QGLBuffer::Type type);
+
+    GLuint bufferId() const;
+
+    int size() const;
+
+    bool read(int offset, void *data, int count);
+    void write(int offset, const void *data, int count);
+
+    void allocate(const void *data, int count);
+    inline void allocate(int count) { allocate(0, count); }
+
+    void *map(QGLBuffer::Access access);
+    bool unmap();
+
+private:
+    QScopedPointer<QGLBufferPrivate> d_ptr;
+
+    Q_DISABLE_COPY(QGLBuffer)
+    Q_DECLARE_PRIVATE(QGLBuffer)
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
diff --git a/src/opengl/qglextensions.cpp b/src/opengl/qglextensions.cpp
index c091191..ef3c4cd 100644
--- a/src/opengl/qglextensions.cpp
+++ b/src/opengl/qglextensions.cpp
@@ -191,35 +191,56 @@ bool qt_resolve_frag_program_extensions(QGLContext *ctx)
 
 bool qt_resolve_buffer_extensions(QGLContext *ctx)
 {
-    if (glMapBufferARB && glUnmapBufferARB
-#if !defined(QT_OPENGL_ES_2)
-        && glBindBuffer && glDeleteBuffers && glGenBuffers && glBufferData
-#endif
-        )
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
+    if (glBindBuffer && glDeleteBuffers && glGenBuffers && glBufferData
+            && glBufferSubData && glGetBufferParameteriv)
         return true;
+#endif
 
-#if !defined(QT_OPENGL_ES_2)
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
     glBindBuffer = (_glBindBuffer) qt_gl_getProcAddressARB(ctx, "glBindBuffer");
     glDeleteBuffers = (_glDeleteBuffers) qt_gl_getProcAddressARB(ctx, "glDeleteBuffers");
     glGenBuffers = (_glGenBuffers) qt_gl_getProcAddressARB(ctx, "glGenBuffers");
     glBufferData = (_glBufferData) qt_gl_getProcAddressARB(ctx, "glBufferData");
+    glBufferSubData = (_glBufferSubData) qt_gl_getProcAddressARB(ctx, "glBufferSubData");
+    glGetBufferSubData = (_glGetBufferSubData) qt_gl_getProcAddressARB(ctx, "glGetBufferSubData");
+    glGetBufferParameteriv = (_glGetBufferParameteriv) qt_gl_getProcAddressARB(ctx, "glGetBufferParameteriv");
 #endif
     glMapBufferARB = (_glMapBufferARB) qt_gl_getProcAddressARB(ctx, "glMapBuffer");
     glUnmapBufferARB = (_glUnmapBufferARB) qt_gl_getProcAddressARB(ctx, "glUnmapBuffer");
 
-    return glMapBufferARB
-        && glUnmapBufferARB
-#if !defined(QT_OPENGL_ES_2)
-        && glBindBuffer
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
+    return glBindBuffer
         && glDeleteBuffers
         && glGenBuffers
         && glBufferData
+        && glBufferSubData
+        && glGetBufferParameteriv;
+        // glGetBufferSubData() is optional
+#else
+    return true;
 #endif
-        ;
 }
 
+#ifndef QT_NO_EGL
+bool qt_resolve_eglimage_gl_extensions(QGLContext *ctx)
+{
+    if (glEGLImageTargetTexture2DOES || glEGLImageTargetRenderbufferStorageOES)
+        return true;
+    glEGLImageTargetTexture2DOES = (_glEGLImageTargetTexture2DOES) ctx->getProcAddress(QLatin1String("glEGLImageTargetTexture2DOES"));
+    glEGLImageTargetRenderbufferStorageOES = (_glEGLImageTargetRenderbufferStorageOES) ctx->getProcAddress(QLatin1String("glEGLImageTargetRenderbufferStorageOES"));
+    return glEGLImageTargetTexture2DOES && glEGLImageTargetRenderbufferStorageOES;
+}
+#endif
+
 bool qt_resolve_glsl_extensions(QGLContext *ctx)
 {
+    // Geometry shaders are optional...
+    glProgramParameteriEXT = (_glProgramParameteriEXT) ctx->getProcAddress(QLatin1String("glProgramParameteriEXT"));
+    glFramebufferTextureEXT = (_glFramebufferTextureEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureEXT"));
+    glFramebufferTextureLayerEXT = (_glFramebufferTextureLayerEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureLayerEXT"));
+    glFramebufferTextureFaceEXT = (_glFramebufferTextureFaceEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureFaceEXT"));
+
 #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.
diff --git a/src/opengl/qglextensions_p.h b/src/opengl/qglextensions_p.h
index b0cb429..7597b33 100644
--- a/src/opengl/qglextensions_p.h
+++ b/src/opengl/qglextensions_p.h
@@ -68,9 +68,15 @@
 # define APIENTRYP *
 #endif
 
+#ifndef QT_NO_EGL
+// Needed for EGLImageKHR definition:
+#include <QtGui/private/qegl_p.h>
+#endif
+
 #include <QtCore/qglobal.h>
 
 #ifndef GL_ARB_vertex_buffer_object
+typedef ptrdiff_t GLintptrARB;
 typedef ptrdiff_t GLsizeiptrARB;
 #endif
 
@@ -78,13 +84,25 @@ typedef ptrdiff_t GLsizeiptrARB;
 typedef char GLchar;
 #endif
 
-// ARB_pixel_buffer_object
+// ARB_vertex_buffer_object
 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 void (APIENTRY *_glBufferSubData) (GLenum, GLintptrARB, GLsizeiptrARB, const GLvoid *);
+typedef void (APIENTRY *_glGetBufferSubData) (GLenum, GLintptrARB, GLsizeiptrARB, GLvoid *);
+typedef void (APIENTRY *_glGetBufferParameteriv) (GLenum, GLenum, GLint *);
 typedef GLvoid* (APIENTRY *_glMapBufferARB) (GLenum, GLenum);
 typedef GLboolean (APIENTRY *_glUnmapBufferARB) (GLenum);
+// We can call the buffer functions directly in OpenGL/ES 1.1 or higher,
+// but all other platforms need to resolve the extensions.
+#if defined(QT_OPENGL_ES)
+#if defined(GL_OES_VERSION_1_0) && !defined(GL_OES_VERSION_1_1)
+#define QGL_RESOLVE_BUFFER_FUNCS 1
+#endif
+#else
+#define QGL_RESOLVE_BUFFER_FUNCS 1
+#endif
 
 // ARB_fragment_program
 typedef void (APIENTRY *_glProgramStringARB) (GLenum, GLenum, GLsizei, const GLvoid *);
@@ -184,10 +202,27 @@ typedef void (APIENTRY *_glBlitFramebufferEXT) (int srcX0, int srcY0, int srcX1,
 typedef void (APIENTRY *_glRenderbufferStorageMultisampleEXT) (GLenum target, GLsizei samples,
                                                                GLenum internalformat, GLsizei width, GLsizei height);
 
+// GL_EXT_geometry_shader4
+typedef void (APIENTRY *_glProgramParameteriEXT)(GLuint program, GLenum pname, GLint value);
+typedef void (APIENTRY *_glFramebufferTextureEXT)(GLenum target, GLenum attachment,
+                                                  GLuint texture, GLint level);
+typedef void (APIENTRY *_glFramebufferTextureLayerEXT)(GLenum target, GLenum attachment,
+                                                       GLuint texture, GLint level, GLint layer);
+typedef void (APIENTRY *_glFramebufferTextureFaceEXT)(GLenum target, GLenum attachment,
+                                                      GLuint texture, GLint level, GLenum face);
+
 // ARB_texture_compression
 typedef void (APIENTRY *_glCompressedTexImage2DARB) (GLenum, GLint, GLenum, GLsizei,
                                                      GLsizei, GLint, GLsizei, const GLvoid *);
 
+#ifndef QT_NO_EGL
+// OES_EGL_image
+// Note: We define these to take EGLImage whereas spec says they take a new GLeglImageOES
+//       type, which the EGL image should be cast to.
+typedef void (APIENTRY *_glEGLImageTargetTexture2DOES) (GLenum, EGLImageKHR);
+typedef void (APIENTRY *_glEGLImageTargetRenderbufferStorageOES) (GLenum, EGLImageKHR);
+#endif
+
 QT_BEGIN_NAMESPACE
 
 struct QGLExtensionFuncs
@@ -285,19 +320,32 @@ struct QGLExtensionFuncs
         qt_glRenderbufferStorageMultisampleEXT = 0;
 
         // Buffer objects:
-#if !defined(QT_OPENGL_ES_2)
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
         qt_glBindBuffer = 0;
         qt_glDeleteBuffers = 0;
         qt_glGenBuffers = 0;
         qt_glBufferData = 0;
+        qt_glBufferSubData = 0;
+        qt_glGetBufferSubData = 0;
+        qt_glGetBufferParameteriv = 0;
 #endif
         qt_glMapBufferARB = 0;
         qt_glUnmapBufferARB = 0;
 
+        qt_glProgramParameteriEXT = 0;
+        qt_glFramebufferTextureEXT = 0;
+        qt_glFramebufferTextureLayerEXT = 0;
+        qt_glFramebufferTextureFaceEXT = 0;
 #if !defined(QT_OPENGL_ES)
         // Texture compression
         qt_glCompressedTexImage2DARB = 0;
 #endif
+
+#ifndef QT_NO_EGL
+        // OES_EGL_image
+        qt_glEGLImageTargetTexture2DOES = 0;
+        qt_glEGLImageTargetRenderbufferStorageOES = 0;
+#endif
     }
 
 
@@ -397,24 +445,47 @@ struct QGLExtensionFuncs
     _glRenderbufferStorageMultisampleEXT qt_glRenderbufferStorageMultisampleEXT;
 
     // Buffer objects
-#if !defined(QT_OPENGL_ES_2)
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
     _glBindBuffer qt_glBindBuffer;
     _glDeleteBuffers qt_glDeleteBuffers;
     _glGenBuffers qt_glGenBuffers;
     _glBufferData qt_glBufferData;
+    _glBufferSubData qt_glBufferSubData;
+    _glGetBufferSubData qt_glGetBufferSubData;
+    _glGetBufferParameteriv qt_glGetBufferParameteriv;
 #endif
     _glMapBufferARB qt_glMapBufferARB;
     _glUnmapBufferARB qt_glUnmapBufferARB;
 
+    // Geometry shaders...
+    _glProgramParameteriEXT qt_glProgramParameteriEXT;
+    _glFramebufferTextureEXT qt_glFramebufferTextureEXT;
+    _glFramebufferTextureLayerEXT qt_glFramebufferTextureLayerEXT;
+    _glFramebufferTextureFaceEXT qt_glFramebufferTextureFaceEXT;
 #if !defined(QT_OPENGL_ES)
     // Texture compression
     _glCompressedTexImage2DARB qt_glCompressedTexImage2DARB;
 #endif
+
+#ifndef QT_NO_EGL
+    // OES_EGL_image
+    _glEGLImageTargetTexture2DOES qt_glEGLImageTargetTexture2DOES;
+    _glEGLImageTargetRenderbufferStorageOES qt_glEGLImageTargetRenderbufferStorageOES;
+#endif
+
 };
 
 
 // OpenGL constants
 
+#ifndef GL_ARRAY_BUFFER
+#define GL_ARRAY_BUFFER                   0x8892
+#endif
+
+#ifndef GL_STATIC_DRAW
+#define GL_STATIC_DRAW                    0x88E4
+#endif
+
 /* NV_texture_rectangle */
 #ifndef GL_NV_texture_rectangle
 #define GL_TEXTURE_RECTANGLE_NV           0x84F5
@@ -428,11 +499,11 @@ struct QGLExtensionFuncs
 #endif
 
 #ifndef GL_RGB16
-#define GL_RGB16 32852
+#define GL_RGB16 0x8054
 #endif
 
 #ifndef GL_UNSIGNED_SHORT_5_6_5
-#define GL_UNSIGNED_SHORT_5_6_5 33635
+#define GL_UNSIGNED_SHORT_5_6_5 0x8363
 #endif
 
 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
@@ -599,6 +670,20 @@ struct QGLExtensionFuncs
 #define GL_DECR_WRAP 0x8508
 #endif
 
+#ifndef GL_VERSION_1_5
+#define GL_ARRAY_BUFFER                                         0x8892
+#define GL_ELEMENT_ARRAY_BUFFER                                 0x8893
+#define GL_STREAM_DRAW                                          0x88E0
+#define GL_STREAM_READ                                          0x88E1
+#define GL_STREAM_COPY                                          0x88E2
+#define GL_STATIC_DRAW                                          0x88E4
+#define GL_STATIC_READ                                          0x88E5
+#define GL_STATIC_COPY                                          0x88E6
+#define GL_DYNAMIC_DRAW                                         0x88E8
+#define GL_DYNAMIC_READ                                         0x88E9
+#define GL_DYNAMIC_COPY                                         0x88EA
+#endif
+
 #ifndef GL_VERSION_2_0
 #define GL_FRAGMENT_SHADER 0x8B30
 #define GL_VERTEX_SHADER 0x8B31
@@ -628,6 +713,29 @@ struct QGLExtensionFuncs
 #define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
 #endif
 
+// Geometry shader defines
+#ifndef GL_GEOMETRY_SHADER_EXT
+#  define GL_GEOMETRY_SHADER_EXT 0x8DD9
+#  define GL_GEOMETRY_VERTICES_OUT_EXT 0x8DDA
+#  define GL_GEOMETRY_INPUT_TYPE_EXT 0x8DDB
+#  define GL_GEOMETRY_OUTPUT_TYPE_EXT 0x8DDC
+#  define GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_EXT 0x8C29
+#  define GL_MAX_GEOMETRY_VARYING_COMPONENTS_EXT 0x8DDD
+#  define GL_MAX_VERTEX_VARYING_COMPONENTS_EXT 0x8DDE
+#  define GL_MAX_VARYING_COMPONENTS_EXT 0x8B4B
+#  define GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_EXT 0x8DDF
+#  define GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT 0x8DE0
+#  define GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_EXT 0x8DE1
+#  define GL_LINES_ADJACENCY_EXT 0xA
+#  define GL_LINE_STRIP_ADJACENCY_EXT 0xB
+#  define GL_TRIANGLES_ADJACENCY_EXT 0xC
+#  define GL_TRIANGLE_STRIP_ADJACENCY_EXT 0xD
+#  define GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT 0x8DA8
+#  define GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_EXT 0x8DA9
+#  define GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT 0x8DA7
+#  define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER_EXT 0x8CD4
+#  define GL_PROGRAM_POINT_SIZE_EXT 0x8642
+#endif
 
 #if !defined(QT_OPENGL_ES_2)
 #define glProgramStringARB QGLContextPrivate::extensionFuncs(ctx).qt_glProgramStringARB
@@ -667,11 +775,14 @@ struct QGLExtensionFuncs
 
 
 // Buffer objects
-#if !defined(QT_OPENGL_ES_2)
+#if defined(QGL_RESOLVE_BUFFER_FUNCS)
 #define glBindBuffer QGLContextPrivate::extensionFuncs(ctx).qt_glBindBuffer
 #define glDeleteBuffers QGLContextPrivate::extensionFuncs(ctx).qt_glDeleteBuffers
 #define glGenBuffers QGLContextPrivate::extensionFuncs(ctx).qt_glGenBuffers
 #define glBufferData QGLContextPrivate::extensionFuncs(ctx).qt_glBufferData
+#define glBufferSubData QGLContextPrivate::extensionFuncs(ctx).qt_glBufferSubData
+#define glGetBufferSubData QGLContextPrivate::extensionFuncs(ctx).qt_glGetBufferSubData
+#define glGetBufferParameteriv QGLContextPrivate::extensionFuncs(ctx).qt_glGetBufferParameteriv
 #endif
 #define glMapBufferARB QGLContextPrivate::extensionFuncs(ctx).qt_glMapBufferARB
 #define glUnmapBufferARB QGLContextPrivate::extensionFuncs(ctx).qt_glUnmapBufferARB
@@ -745,10 +856,21 @@ struct QGLExtensionFuncs
 #define glClearDepth glClearDepthf
 #endif
 
+#define glProgramParameteriEXT QGLContextPrivate::extensionFuncs(ctx).qt_glProgramParameteriEXT
+#define glFramebufferTextureEXT QGLContextPrivate::extensionFuncs(ctx).qt_glFramebufferTextureEXT
+#define glFramebufferTextureLayerEXT QGLContextPrivate::extensionFuncs(ctx).qt_glFramebufferTextureLayerEXT
+#define glFramebufferTextureFaceEXT QGLContextPrivate::extensionFuncs(ctx).qt_glFramebufferTextureFaceEXT
+
 #if !defined(QT_OPENGL_ES)
 #define glCompressedTexImage2D QGLContextPrivate::extensionFuncs(ctx).qt_glCompressedTexImage2DARB
 #endif
 
+#ifndef QT_NO_EGL
+// OES_EGL_image
+#define glEGLImageTargetTexture2DOES QGLContextPrivate::extensionFuncs(ctx).qt_glEGLImageTargetTexture2DOES
+#define glEGLImageTargetRenderbufferStorageOES QGLContextPrivate::extensionFuncs(ctx).qt_glEGLImageTargetRenderbufferStorageOES
+#endif
+
 extern bool qt_resolve_framebufferobject_extensions(QGLContext *ctx);
 bool qt_resolve_buffer_extensions(QGLContext *ctx);
 
@@ -759,6 +881,10 @@ bool qt_resolve_frag_program_extensions(QGLContext *ctx);
 
 bool qt_resolve_glsl_extensions(QGLContext *ctx);
 
+#ifndef QT_NO_EGL
+bool qt_resolve_eglimage_gl_extensions(QGLContext *ctx);
+#endif
+
 QT_END_NAMESPACE
 
 #endif // QGL_EXTENSIONS_P_H
diff --git a/src/opengl/qglframebufferobject.cpp b/src/opengl/qglframebufferobject.cpp
index dd6a3d5..890b029 100644
--- a/src/opengl/qglframebufferobject.cpp
+++ b/src/opengl/qglframebufferobject.cpp
@@ -44,7 +44,7 @@
 
 #include <qdebug.h>
 #include <private/qgl_p.h>
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
 #include <private/qpaintengineex_opengl2_p.h>
 #endif
 
@@ -56,10 +56,6 @@
 #include <qlibrary.h>
 #include <qimage.h>
 
-#ifdef QT_OPENGL_ES_1_CL
-#include "qgl_cl_p.h"
-#endif
-
 QT_BEGIN_NAMESPACE
 
 extern QImage qt_gl_read_framebuffer(const QSize&, bool, bool);
@@ -132,7 +128,7 @@ void QGLFramebufferObjectFormat::detach()
     attachments, texture target \c GL_TEXTURE_2D, and internal format \c GL_RGBA8.
     On OpenGL/ES systems, the default internal format is \c GL_RGBA.
 
-    \sa samples(), attachment(), target(), internalTextureFormat()
+    \sa samples(), attachment(), internalTextureFormat()
 */
 
 QGLFramebufferObjectFormat::QGLFramebufferObjectFormat()
@@ -987,7 +983,7 @@ QImage QGLFramebufferObject::toImage() const
     return image;
 }
 
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
 Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_buffer_2_engine)
 #endif
 
@@ -1002,7 +998,7 @@ QPaintEngine *QGLFramebufferObject::paintEngine() const
     if (d->engine)
         return d->engine;
 
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
 #if !defined (QT_OPENGL_ES_2)
     if (qt_gl_preferGL2Engine()) {
 #endif
diff --git a/src/opengl/qglpaintdevice.cpp b/src/opengl/qglpaintdevice.cpp
index 8ba0108..2d82222 100644
--- a/src/opengl/qglpaintdevice.cpp
+++ b/src/opengl/qglpaintdevice.cpp
@@ -48,14 +48,10 @@
 #include <private/qpixmapdata_x11gl_p.h>
 #endif
 
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
 #include <private/qpixmapdata_gl_p.h>
 #endif
 
-#if defined(QT_OPENGL_ES_1_CL)
-#include "qgl_cl_p.h"
-#endif
-
 QT_BEGIN_NAMESPACE
 
 QGLPaintDevice::QGLPaintDevice()
@@ -203,7 +199,7 @@ QGLPaintDevice* QGLPaintDevice::getDevice(QPaintDevice* pd)
             glpd = &(static_cast<QGLFramebufferObject*>(pd)->d_func()->glDevice);
             break;
         case QInternal::Pixmap: {
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
             QPixmapData* pmd = static_cast<QPixmap*>(pd)->pixmapData();
             if (pmd->classId() == QPixmapData::OpenGLClass)
                 glpd = static_cast<QGLPixmapData*>(pmd)->glDevice();
diff --git a/src/opengl/qglpixelbuffer.cpp b/src/opengl/qglpixelbuffer.cpp
index 46f7697..eca9550 100644
--- a/src/opengl/qglpixelbuffer.cpp
+++ b/src/opengl/qglpixelbuffer.cpp
@@ -78,7 +78,7 @@
 
 #include <QtCore/qglobal.h>
 
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
 #include <private/qpaintengineex_opengl2_p.h>
 #endif
 
@@ -387,7 +387,7 @@ bool QGLPixelBuffer::isValid() const
     return !d->invalid;
 }
 
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
 Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_buffer_2_engine)
 #endif
 
@@ -398,7 +398,7 @@ Q_GLOBAL_STATIC(QOpenGLPaintEngine, qt_buffer_engine)
 /*! \reimp */
 QPaintEngine *QGLPixelBuffer::paintEngine() const
 {
-#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL)
+#if defined(QT_OPENGL_ES_1)
     return qt_buffer_engine();
 #elif defined(QT_OPENGL_ES_2)
     return qt_buffer_2_engine();
diff --git a/src/opengl/qglpixelbuffer.h b/src/opengl/qglpixelbuffer.h
index 3304dd8..d9c7e3e 100644
--- a/src/opengl/qglpixelbuffer.h
+++ b/src/opengl/qglpixelbuffer.h
@@ -112,6 +112,7 @@ private:
     friend class QGLWindowSurface;
     friend class QGLPaintDevice;
     friend class QGLPBufferGLPaintDevice;
+    friend class QGLContextPrivate;
 };
 
 QT_END_NAMESPACE
diff --git a/src/opengl/qglpixelbuffer_egl.cpp b/src/opengl/qglpixelbuffer_egl.cpp
index dbe919d..db9e754 100644
--- a/src/opengl/qglpixelbuffer_egl.cpp
+++ b/src/opengl/qglpixelbuffer_egl.cpp
@@ -47,10 +47,6 @@
 #include <qimage.h>
 #include <private/qgl_p.h>
 
-#ifdef QT_OPENGL_ES_1_CL
-#include "qgl_cl_p.h"
-#endif
-
 QT_BEGIN_NAMESPACE
 
 #ifdef EGL_BIND_TO_TEXTURE_RGBA
@@ -86,7 +82,8 @@ bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidge
 #endif
     } else {
         QEglProperties configProps;
-        qt_egl_set_format(configProps, QInternal::Pbuffer, f);
+        qt_eglproperties_set_glformat(configProps, f);
+        configProps.setDeviceType(QInternal::Pbuffer);
         configProps.setRenderableType(ctx->api());
         bool ok = false;
 #if QGL_RENDER_TEXTURE
@@ -116,7 +113,7 @@ bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidge
     }
 
     // Retrieve the actual format properties.
-    qt_egl_update_format(*ctx, format);
+    qt_glformat_from_eglconfig(format, ctx->config());
 
     // Create the attributes needed for the pbuffer.
     QEglProperties attribs;
@@ -141,7 +138,7 @@ bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidge
     }
 #endif
     if (pbuf == EGL_NO_SURFACE) {
-        qWarning() << "QGLPixelBufferPrivate::init(): Unable to create EGL pbuffer surface:" << QEglContext::errorString(eglGetError());
+        qWarning() << "QGLPixelBufferPrivate::init(): Unable to create EGL pbuffer surface:" << QEgl::errorString();
         return false;
     }
 
@@ -208,11 +205,12 @@ GLuint QGLPixelBuffer::generateDynamicTexture() const
 bool QGLPixelBuffer::hasOpenGLPbuffers()
 {
     // See if we have at least 1 configuration that matches the default format.
-    EGLDisplay dpy = QEglContext::display();
+    EGLDisplay dpy = QEgl::display();
     if (dpy == EGL_NO_DISPLAY)
         return false;
     QEglProperties configProps;
-    qt_egl_set_format(configProps, QInternal::Pbuffer, QGLFormat::defaultFormat());
+    qt_eglproperties_set_glformat(configProps, QGLFormat::defaultFormat());
+    configProps.setDeviceType(QInternal::Pbuffer);
     configProps.setRenderableType(QEgl::OpenGL);
     do {
         EGLConfig cfg = 0;
diff --git a/src/opengl/qglshaderprogram.cpp b/src/opengl/qglshaderprogram.cpp
index 79484fa..55fd922 100644
--- a/src/opengl/qglshaderprogram.cpp
+++ b/src/opengl/qglshaderprogram.cpp
@@ -50,7 +50,7 @@
 
 QT_BEGIN_NAMESPACE
 
-#if !defined(QT_OPENGL_ES_1_CL) && !defined(QT_OPENGL_ES_1)
+#if !defined(QT_OPENGL_ES_1)
 
 /*!
     \class QGLShaderProgram
@@ -143,6 +143,8 @@ QT_BEGIN_NAMESPACE
 
     \value Vertex Vertex shader written in the OpenGL Shading Language (GLSL).
     \value Fragment Fragment shader written in the OpenGL Shading Language (GLSL).
+    \value Geometry Geometry shaders written in the OpenGL Shading
+           Language (GLSL), based on the GL_EXT_geometry_shader4 extension.
 */
 
 #ifndef GL_FRAGMENT_SHADER
@@ -226,6 +228,8 @@ bool QGLShaderPrivate::create()
         GLuint shader;
         if (shaderType == QGLShader::Vertex)
             shader = glCreateShader(GL_VERTEX_SHADER);
+        else if (shaderType == QGLShader::Geometry)
+            shader = glCreateShader(GL_GEOMETRY_SHADER_EXT);
         else
             shader = glCreateShader(GL_FRAGMENT_SHADER);
         if (!shader) {
@@ -509,6 +513,10 @@ GLuint QGLShader::shaderId() const
     return d->shaderGuard.id();
 }
 
+
+
+
+
 #undef ctx
 #define ctx programGuard.context()
 
@@ -521,8 +529,9 @@ public:
         , linked(false)
         , inited(false)
         , removingShaders(false)
-        , vertexShader(0)
-        , fragmentShader(0)
+        , geometryVertexCount(64)
+        , geometryInputType(0)
+        , geometryOutputType(0)
     {
     }
     ~QGLShaderProgramPrivate();
@@ -531,11 +540,14 @@ public:
     bool linked;
     bool inited;
     bool removingShaders;
+
+    int geometryVertexCount;
+    GLenum geometryInputType;
+    GLenum geometryOutputType;
+
     QString log;
     QList<QGLShader *> shaders;
     QList<QGLShader *> anonShaders;
-    QGLShader *vertexShader;
-    QGLShader *fragmentShader;
 
     bool hasShader(QGLShader::ShaderType type) const;
 };
@@ -604,6 +616,7 @@ bool QGLShaderProgram::init()
         context = QGLContext::currentContext();
         d->programGuard.setContext(context);
     }
+
     if (!context)
         return false;
     if (qt_resolve_glsl_extensions(const_cast<QGLContext *>(context))) {
@@ -831,6 +844,7 @@ bool QGLShaderProgram::link()
     GLuint program = d->programGuard.id();
     if (!program)
         return false;
+
     GLint value;
     if (d->shaders.isEmpty()) {
         // If there are no explicit shaders, then it is possible that the
@@ -843,6 +857,22 @@ bool QGLShaderProgram::link()
         if (d->linked)
             return true;
     }
+
+    // Set up the geometry shader parameters
+    if (glProgramParameteriEXT) {
+        foreach (QGLShader *shader, d->shaders) {
+            if (shader->shaderType() & QGLShader::Geometry) {
+                glProgramParameteriEXT(program, GL_GEOMETRY_INPUT_TYPE_EXT,
+                                       d->geometryInputType);
+                glProgramParameteriEXT(program, GL_GEOMETRY_OUTPUT_TYPE_EXT,
+                                       d->geometryOutputType);
+                glProgramParameteriEXT(program, GL_GEOMETRY_VERTICES_OUT_EXT,
+                                       d->geometryVertexCount);
+                break;
+            }
+        }
+    }
+
     glLinkProgram(program);
     value = 0;
     glGetProgramiv(program, GL_LINK_STATUS, &value);
@@ -1260,7 +1290,8 @@ void QGLShaderProgram::setAttributeValue(int location, const QColor& value)
     Q_D(QGLShaderProgram);
     Q_UNUSED(d);
     if (location != -1) {
-        GLfloat values[4] = {value.redF(), value.greenF(), value.blueF(), value.alphaF()};
+        GLfloat values[4] = {GLfloat(value.redF()), GLfloat(value.greenF()),
+                             GLfloat(value.blueF()), GLfloat(value.alphaF())};
         glVertexAttrib4fv(location, values);
     }
 }
@@ -1426,6 +1457,38 @@ void QGLShaderProgram::setAttributeArray
 }
 
 /*!
+    Sets an array of 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.
+
+    The \a type indicates the type of elements in the \a values array,
+    usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc.  The \a tupleSize
+    indicates the number of components per vertex: 1, 2, 3, or 4.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a location.  Otherwise the value specified with
+    setAttributeValue() for \a location will be used.
+
+    The setAttributeBuffer() function can be used to set the attribute
+    array to an offset within a vertex buffer.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray(), setAttributeBuffer()
+    \since 4.7
+*/
+void QGLShaderProgram::setAttributeArray
+    (int location, GLenum type, const void *values, int tupleSize, int stride)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        glVertexAttribPointer(location, tupleSize, type, GL_FALSE,
+                              stride, values);
+    }
+}
+
+/*!
     \overload
 
     Sets an array of vertex \a values on the attribute called \a name
@@ -1511,6 +1574,92 @@ void QGLShaderProgram::setAttributeArray
 }
 
 /*!
+    \overload
+
+    Sets an array of 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.
+
+    The \a type indicates the type of elements in the \a values array,
+    usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc.  The \a tupleSize
+    indicates the number of components per vertex: 1, 2, 3, or 4.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a name.  Otherwise the value specified with
+    setAttributeValue() for \a name will be used.
+
+    The setAttributeBuffer() function can be used to set the attribute
+    array to an offset within a vertex buffer.
+
+    \sa setAttributeValue(), setUniformValue(), enableAttributeArray()
+    \sa disableAttributeArray(), setAttributeBuffer()
+    \since 4.7
+*/
+void QGLShaderProgram::setAttributeArray
+    (const char *name, GLenum type, const void *values, int tupleSize, int stride)
+{
+    setAttributeArray(attributeLocation(name), type, values, tupleSize, stride);
+}
+
+/*!
+    Sets an array of vertex values on the attribute at \a location in
+    this shader program, starting at a specific \a offset in the
+    currently bound vertex buffer.  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 the value array.
+
+    The \a type indicates the type of elements in the vertex value
+    array, usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc.  The \a
+    tupleSize indicates the number of components per vertex: 1, 2, 3,
+    or 4.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a location.  Otherwise the value specified with
+    setAttributeValue() for \a location will be used.
+
+    \sa setAttributeArray()
+    \since 4.7
+*/
+void QGLShaderProgram::setAttributeBuffer
+    (int location, GLenum type, int offset, int tupleSize, int stride)
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1) {
+        glVertexAttribPointer(location, tupleSize, type, GL_FALSE, stride,
+                              reinterpret_cast<const void *>(offset));
+    }
+}
+
+/*!
+    \overload
+
+    Sets an array of vertex values on the attribute called \a name
+    in this shader program, starting at a specific \a offset in the
+    currently bound vertex buffer.  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 the value array.
+
+    The \a type indicates the type of elements in the vertex value
+    array, usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc.  The \a
+    tupleSize indicates the number of components per vertex: 1, 2, 3,
+    or 4.
+
+    The array will become active when enableAttributeArray() is called
+    on the \a name.  Otherwise the value specified with
+    setAttributeValue() for \a name will be used.
+
+    \sa setAttributeArray()
+    \since 4.7
+*/
+void QGLShaderProgram::setAttributeBuffer
+    (const char *name, GLenum type, int offset, int tupleSize, int stride)
+{
+    setAttributeBuffer(attributeLocation(name), type, offset, tupleSize, stride);
+}
+
+/*!
     Enables the vertex array at \a location in this shader program
     so that the value set by setAttributeArray() on \a location
     will be used by the shader program.
@@ -1877,7 +2026,8 @@ void QGLShaderProgram::setUniformValue(int location, const QColor& color)
     Q_D(QGLShaderProgram);
     Q_UNUSED(d);
     if (location != -1) {
-        GLfloat values[4] = {color.redF(), color.greenF(), color.blueF(), color.alphaF()};
+        GLfloat values[4] = {GLfloat(color.redF()), GLfloat(color.greenF()),
+                             GLfloat(color.blueF()), GLfloat(color.alphaF())};
         glUniform4fv(location, 1, values);
     }
 }
@@ -1906,7 +2056,7 @@ void QGLShaderProgram::setUniformValue(int location, const QPoint& point)
     Q_D(QGLShaderProgram);
     Q_UNUSED(d);
     if (location != -1) {
-        GLfloat values[4] = {point.x(), point.y()};
+        GLfloat values[4] = {GLfloat(point.x()), GLfloat(point.y())};
         glUniform2fv(location, 1, values);
     }
 }
@@ -1935,7 +2085,7 @@ void QGLShaderProgram::setUniformValue(int location, const QPointF& point)
     Q_D(QGLShaderProgram);
     Q_UNUSED(d);
     if (location != -1) {
-        GLfloat values[4] = {point.x(), point.y()};
+        GLfloat values[4] = {GLfloat(point.x()), GLfloat(point.y())};
         glUniform2fv(location, 1, values);
     }
 }
@@ -1964,7 +2114,7 @@ void QGLShaderProgram::setUniformValue(int location, const QSize& size)
     Q_D(QGLShaderProgram);
     Q_UNUSED(d);
     if (location != -1) {
-        GLfloat values[4] = {size.width(), size.width()};
+        GLfloat values[4] = {GLfloat(size.width()), GLfloat(size.width())};
         glUniform2fv(location, 1, values);
     }
 }
@@ -1993,7 +2143,7 @@ void QGLShaderProgram::setUniformValue(int location, const QSizeF& size)
     Q_D(QGLShaderProgram);
     Q_UNUSED(d);
     if (location != -1) {
-        GLfloat values[4] = {size.width(), size.height()};
+        GLfloat values[4] = {GLfloat(size.width()), GLfloat(size.height())};
         glUniform2fv(location, 1, values);
     }
 }
@@ -2307,6 +2457,42 @@ void QGLShaderProgram::setUniformValue(const char *name, const QMatrix4x4& value
     \overload
 
     Sets the uniform variable at \a location in the current context
+    to a 2x2 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+    \since 4.7
+*/
+void QGLShaderProgram::setUniformValue(int location, const GLfloat value[2][2])
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniformMatrix2fv(location, 1, GL_FALSE, value[0]);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable at \a location in the current context
+    to a 3x3 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+    \since 4.7
+*/
+void QGLShaderProgram::setUniformValue(int location, const GLfloat value[3][3])
+{
+    Q_D(QGLShaderProgram);
+    Q_UNUSED(d);
+    if (location != -1)
+        glUniformMatrix3fv(location, 1, GL_FALSE, value[0]);
+}
+
+/*!
+    \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.
 
@@ -2320,6 +2506,37 @@ void QGLShaderProgram::setUniformValue(int location, const GLfloat value[4][4])
         glUniformMatrix4fv(location, 1, GL_FALSE, value[0]);
 }
 
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 2x2 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+    \since 4.7
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[2][2])
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
+/*!
+    \overload
+
+    Sets the uniform variable called \a name in the current context
+    to a 3x3 matrix \a value.  The matrix elements must be specified
+    in column-major order.
+
+    \sa setAttributeValue()
+    \since 4.7
+*/
+void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[3][3])
+{
+    setUniformValue(uniformLocation(name), value);
+}
+
 /*!
     \overload
 
@@ -2347,9 +2564,9 @@ void QGLShaderProgram::setUniformValue(int location, const QTransform& value)
     Q_UNUSED(d);
     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()}
+            {GLfloat(value.m11()), GLfloat(value.m12()), GLfloat(value.m13())},
+            {GLfloat(value.m21()), GLfloat(value.m22()), GLfloat(value.m23())},
+            {GLfloat(value.m31()), GLfloat(value.m32()), GLfloat(value.m33())}
         };
         glUniformMatrix3fv(location, 1, GL_FALSE, mat[0]);
     }
@@ -2862,6 +3079,108 @@ void QGLShaderProgram::setUniformValueArray(const char *name, const QMatrix4x4 *
 #undef ctx
 
 /*!
+    Returns the hardware limit for how many vertices a geometry shader
+    can output.
+
+    \since 4.7
+
+    \sa setGeometryOutputVertexCount()
+*/
+int QGLShaderProgram::maxGeometryOutputVertices() const
+{
+    GLint n;
+    glGetIntegerv(GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT, &n);
+    return n;
+}
+
+/*!
+    Sets the maximum number of vertices the current geometry shader
+    program will produce, if active, to \a count.
+
+    \since 4.7
+
+    This parameter takes effect the next time the program is linked.
+*/
+void QGLShaderProgram::setGeometryOutputVertexCount(int count)
+{
+#ifndef QT_NO_DEBUG
+    int max = maxGeometryOutputVertices();
+    if (count > max) {
+        qWarning("QGLShaderProgram::setGeometryOutputVertexCount: count: %d higher than maximum: %d",
+                 count, max);
+    }
+#endif
+    d_func()->geometryVertexCount = count;
+}
+
+
+/*!
+    Returns the maximum number of vertices the current geometry shader
+    program will produce, if active.
+
+    \since 4.7
+
+    This parameter takes effect the ntext time the program is linked.
+*/
+int QGLShaderProgram::geometryOutputVertexCount() const
+{
+    return d_func()->geometryVertexCount;
+}
+
+
+/*!
+    Sets the input type from \a inputType.
+
+    This parameter takes effect the next time the program is linked.
+*/
+void QGLShaderProgram::setGeometryInputType(GLenum inputType)
+{
+    d_func()->geometryInputType = inputType;
+}
+
+
+/*!
+    Returns the geometry shader input type, if active.
+
+    This parameter takes effect the next time the program is linked.
+
+    \since 4.7
+ */
+
+GLenum QGLShaderProgram::geometryInputType() const
+{
+    return d_func()->geometryInputType;
+}
+
+
+/*!
+    Sets the output type from the geometry shader, if active, to
+    \a outputType.
+
+    This parameter takes effect the next time the program is linked.
+
+    \since 4.7
+*/
+void QGLShaderProgram::setGeometryOutputType(GLenum outputType)
+{
+    d_func()->geometryOutputType = outputType;
+}
+
+
+/*!
+    Returns the geometry shader output type, if active.
+
+    This parameter takes effect the next time the program is linked.
+
+    \since 4.7
+ */
+GLenum QGLShaderProgram::geometryOutputType() const
+{
+    return d_func()->geometryOutputType;
+}
+
+
+/*!
     Returns true if shader programs written in the OpenGL Shading
     Language (GLSL) are supported on this system; false otherwise.
 
@@ -2893,8 +3212,71 @@ void QGLShaderProgram::shaderDestroyed()
         removeShader(shader);
 }
 
+
+#undef ctx
+#undef context
+
+/*!
+    Returns true if shader programs of type \a type 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.
+
+    \since 4.7
+*/
+bool QGLShader::hasOpenGLShaders(ShaderType type, const QGLContext *context)
+{
+    if (!context)
+        context = QGLContext::currentContext();
+    if (!context)
+        return false;
+
+    if ((type & ~(Geometry | Vertex | Fragment)) || type == 0)
+        return false;
+
+    bool resolved = qt_resolve_glsl_extensions(const_cast<QGLContext *>(context));
+    if (!resolved)
+        return false;
+
+    if ((type & Geometry) && !QByteArray((const char *) glGetString(GL_EXTENSIONS)).contains("GL_EXT_geometry_shader4"))
+        return false;
+
+    return true;
+}
+
+
+
 #ifdef Q_MAC_COMPAT_GL_FUNCTIONS
 /*! \internal */
+void QGLShaderProgram::setAttributeArray
+    (int location, QMacCompatGLenum type, const void *values, int tupleSize, int stride)
+{
+    setAttributeArray(location, GLenum(type), values, tupleSize, stride);
+}
+
+/*! \internal */
+void QGLShaderProgram::setAttributeArray
+    (const char *name, QMacCompatGLenum type, const void *values, int tupleSize, int stride)
+{
+    setAttributeArray(name, GLenum(type), values, tupleSize, stride);
+}
+
+/*! \internal */
+void QGLShaderProgram::setAttributeBuffer
+    (int location, QMacCompatGLenum type, int offset, int tupleSize, int stride)
+{
+    setAttributeBuffer(location, GLenum(type), offset, tupleSize, stride);
+}
+
+/*! \internal */
+void QGLShaderProgram::setAttributeBuffer
+    (const char *name, QMacCompatGLenum type, int offset, int tupleSize, int stride)
+{
+    setAttributeBuffer(name, GLenum(type), offset, tupleSize, stride);
+}
+
+/*! \internal */
 void QGLShaderProgram::setUniformValue(int location, QMacCompatGLint value)
 {
     setUniformValue(location, GLint(value));
@@ -2943,6 +3325,6 @@ void QGLShaderProgram::setUniformValueArray(const char *name, const QMacCompatGL
 }
 #endif
 
-#endif // !defined(QT_OPENGL_ES_1_CL) && !defined(QT_OPENGL_ES_1)
+#endif // !defined(QT_OPENGL_ES_1)
 
 QT_END_NAMESPACE
diff --git a/src/opengl/qglshaderprogram.h b/src/opengl/qglshaderprogram.h
index 24ab986..d612b05 100644
--- a/src/opengl/qglshaderprogram.h
+++ b/src/opengl/qglshaderprogram.h
@@ -54,7 +54,7 @@ QT_BEGIN_NAMESPACE
 
 QT_MODULE(OpenGL)
 
-#if !defined(QT_OPENGL_ES_1_CL) && !defined(QT_OPENGL_ES_1)
+#if !defined(QT_OPENGL_ES_1)
 
 class QGLShaderProgram;
 class QGLShaderPrivate;
@@ -66,7 +66,8 @@ public:
     enum ShaderTypeBit
     {
         Vertex          = 0x0001,
-        Fragment        = 0x0002
+        Fragment        = 0x0002,
+        Geometry        = 0x0004
     };
     Q_DECLARE_FLAGS(ShaderType, ShaderTypeBit)
 
@@ -88,6 +89,8 @@ public:
 
     GLuint shaderId() const;
 
+    static bool hasOpenGLShaders(ShaderType type, const QGLContext *context = 0);
+
 private:
     friend class QGLShaderProgram;
 
@@ -100,6 +103,14 @@ Q_DECLARE_OPERATORS_FOR_FLAGS(QGLShader::ShaderType)
 
 class QGLShaderProgramPrivate;
 
+#ifndef GL_EXT_geometry_shader4
+#  define GL_LINES_ADJACENCY_EXT 0xA
+#  define GL_LINE_STRIP_ADJACENCY_EXT 0xB
+#  define GL_TRIANGLES_ADJACENCY_EXT 0xC
+#  define GL_TRIANGLE_STRIP_ADJACENCY_EXT 0xD
+#endif
+
+
 class Q_OPENGL_EXPORT QGLShaderProgram : public QObject
 {
     Q_OBJECT
@@ -128,6 +139,17 @@ public:
 
     GLuint programId() const;
 
+    int maxGeometryOutputVertices() const;
+
+    void setGeometryOutputVertexCount(int count);
+    int geometryOutputVertexCount() const;
+
+    void setGeometryInputType(GLenum inputType);
+    GLenum geometryInputType() const;
+
+    void setGeometryOutputType(GLenum outputType);
+    GLenum geometryOutputType() const;
+
     void bindAttributeLocation(const char *name, int location);
     void bindAttributeLocation(const QByteArray& name, int location);
     void bindAttributeLocation(const QString& name, int location);
@@ -165,6 +187,8 @@ public:
     void setAttributeArray
         (int location, const QVector4D *values, int stride = 0);
     void setAttributeArray
+        (int location, GLenum type, const void *values, int tupleSize, int stride = 0);
+    void setAttributeArray
         (const char *name, const GLfloat *values, int tupleSize, int stride = 0);
     void setAttributeArray
         (const char *name, const QVector2D *values, int stride = 0);
@@ -172,6 +196,24 @@ public:
         (const char *name, const QVector3D *values, int stride = 0);
     void setAttributeArray
         (const char *name, const QVector4D *values, int stride = 0);
+    void setAttributeArray
+        (const char *name, GLenum type, const void *values, int tupleSize, int stride = 0);
+
+    void setAttributeBuffer
+        (int location, GLenum type, int offset, int tupleSize, int stride = 0);
+    void setAttributeBuffer
+        (const char *name, GLenum type, int offset, int tupleSize, int stride = 0);
+
+#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
+    void setAttributeArray
+        (int location, QMacCompatGLenum type, const void *values, int tupleSize, int stride = 0);
+    void setAttributeArray
+        (const char *name, QMacCompatGLenum type, const void *values, int tupleSize, int stride = 0);
+    void setAttributeBuffer
+        (int location, QMacCompatGLenum type, int offset, int tupleSize, int stride = 0);
+    void setAttributeBuffer
+        (const char *name, QMacCompatGLenum type, int offset, int tupleSize, int stride = 0);
+#endif
 
     void enableAttributeArray(int location);
     void enableAttributeArray(const char *name);
@@ -216,6 +258,8 @@ public:
     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[2][2]);
+    void setUniformValue(int location, const GLfloat value[3][3]);
     void setUniformValue(int location, const GLfloat value[4][4]);
     void setUniformValue(int location, const QTransform& value);
 
@@ -242,6 +286,8 @@ public:
     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[2][2]);
+    void setUniformValue(const char *name, const GLfloat value[3][3]);
     void setUniformValue(const char *name, const GLfloat value[4][4]);
     void setUniformValue(const char *name, const QTransform& value);
 
diff --git a/src/opengl/qgraphicsshadereffect.cpp b/src/opengl/qgraphicsshadereffect.cpp
index dddc85d..f53ef54 100644
--- a/src/opengl/qgraphicsshadereffect.cpp
+++ b/src/opengl/qgraphicsshadereffect.cpp
@@ -40,7 +40,7 @@
 ****************************************************************************/
 
 #include "qgraphicsshadereffect_p.h"
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+#if !defined(QT_OPENGL_ES_1)
 #include "qglshaderprogram.h"
 #include "gl2paintengineex/qglcustomshaderstage_p.h"
 #define QGL_HAVE_CUSTOM_SHADERS 1
diff --git a/src/opengl/qgraphicssystem_gl.cpp b/src/opengl/qgraphicssystem_gl.cpp
index 3a399ae..a282e4c 100644
--- a/src/opengl/qgraphicssystem_gl.cpp
+++ b/src/opengl/qgraphicssystem_gl.cpp
@@ -62,7 +62,6 @@ QPixmapData *QGLGraphicsSystem::createPixmapData(QPixmapData::PixelType type) co
     if (type == QPixmapData::PixmapType && QX11GLPixmapData::hasX11GLPixmaps())
         return new QX11GLPixmapData();
 #endif
-
     return new QGLPixmapData(type);
 }
 
diff --git a/src/opengl/qpaintengine_opengl.cpp b/src/opengl/qpaintengine_opengl.cpp
index 57918d0..306fd8b 100644
--- a/src/opengl/qpaintengine_opengl.cpp
+++ b/src/opengl/qpaintengine_opengl.cpp
@@ -60,6 +60,7 @@
 #include <private/qglpixelbuffer_p.h>
 #include <private/qbezier_p.h>
 #include <qglframebufferobject.h>
+#include <private/qstatictext_p.h>
 
 #include "private/qtessellator_p.h"
 
@@ -71,10 +72,6 @@
 #include "private/qwsmanager_p.h"
 #endif
 
-#ifdef QT_OPENGL_ES_1_CL
-#include "qgl_cl_p.h"
-#endif
-
 #define QGL_FUNC_CONTEXT QGLContext *ctx = const_cast<QGLContext *>(device->context());
 
 #include <stdlib.h>
@@ -780,7 +777,7 @@ public:
     void drawOffscreenPath(const QPainterPath &path);
 
     void composite(const QRectF &rect, const QPoint &maskOffset = QPoint());
-    void composite(GLuint primitive, const q_vertexType *vertexArray, int vertexCount, const QPoint &maskOffset = QPoint());
+    void composite(GLuint primitive, const GLfloat *vertexArray, int vertexCount, const QPoint &maskOffset = QPoint());
 
     bool createFragmentPrograms();
     void deleteFragmentPrograms();
@@ -1787,7 +1784,7 @@ class QOpenGLTrapezoidToArrayTessellator : public QOpenGLTessellator
 public:
     QOpenGLTrapezoidToArrayTessellator() : vertices(0), allocated(0), size(0) {}
     ~QOpenGLTrapezoidToArrayTessellator() { free(vertices); }
-    q_vertexType *vertices;
+    GLfloat *vertices;
     int allocated;
     int size;
     QRectF bounds;
@@ -1808,36 +1805,36 @@ void QOpenGLTrapezoidToArrayTessellator::addTrap(const Trapezoid &trap)
     if (size > allocated - 12) {
 #endif
         allocated = qMax(2*allocated, 512);
-        vertices = (q_vertexType *)realloc(vertices, allocated * sizeof(q_vertexType));
+        vertices = (GLfloat *)realloc(vertices, allocated * sizeof(GLfloat));
     }
 
     QGLTrapezoid t = toGLTrapezoid(trap);
 
 #ifndef QT_OPENGL_ES
-    vertices[size++] = f2vt(t.topLeftX);
-    vertices[size++] = f2vt(t.top);
-    vertices[size++] = f2vt(t.topRightX);
-    vertices[size++] = f2vt(t.top);
-    vertices[size++] = f2vt(t.bottomRightX);
-    vertices[size++] = f2vt(t.bottom);
-    vertices[size++] = f2vt(t.bottomLeftX);
-    vertices[size++] = f2vt(t.bottom);
+    vertices[size++] = t.topLeftX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.topRightX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.bottomRightX;
+    vertices[size++] = t.bottom;
+    vertices[size++] = t.bottomLeftX;
+    vertices[size++] = t.bottom;
 #else
     // First triangle
-    vertices[size++] = f2vt(t.topLeftX);
-    vertices[size++] = f2vt(t.top);
-    vertices[size++] = f2vt(t.topRightX);
-    vertices[size++] = f2vt(t.top);
-    vertices[size++] = f2vt(t.bottomRightX);
-    vertices[size++] = f2vt(t.bottom);
+    vertices[size++] = t.topLeftX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.topRightX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.bottomRightX;
+    vertices[size++] = t.bottom;
 
     // Second triangle
-    vertices[size++] = f2vt(t.bottomLeftX);
-    vertices[size++] = f2vt(t.bottom);
-    vertices[size++] = f2vt(t.topLeftX);
-    vertices[size++] = f2vt(t.top);
-    vertices[size++] = f2vt(t.bottomRightX);
-    vertices[size++] = f2vt(t.bottom);
+    vertices[size++] = t.bottomLeftX;
+    vertices[size++] = t.bottom;
+    vertices[size++] = t.topLeftX;
+    vertices[size++] = t.top;
+    vertices[size++] = t.bottomRightX;
+    vertices[size++] = t.bottom;
 #endif
 }
 
@@ -1864,7 +1861,7 @@ void QOpenGLPaintEnginePrivate::fillPolygon_dev(const QPointF *polygonPoints, in
     if (use_fragment_programs && !(fast_style && has_fast_composition_mode)) {
         composite(geometry_mode, tessellator.vertices, tessellator.size / 2);
     } else {
-        glVertexPointer(2, q_vertexTypeEnum, 0, tessellator.vertices);
+        glVertexPointer(2, GL_FLOAT, 0, tessellator.vertices);
         glEnableClientState(GL_VERTEX_ARRAY);
         glDrawArrays(geometry_mode, 0, tessellator.size/2);
         glDisableClientState(GL_VERTEX_ARRAY);
@@ -2265,7 +2262,7 @@ void QOpenGLPaintEnginePrivate::updateDepthClip()
         return;
     }
 
-#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2) || defined(QT_OPENGL_ES_1_CL)
+#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_2)
     glClearDepthf(0.0f);
 #else
     glClearDepth(0.0f);
@@ -2281,12 +2278,12 @@ void QOpenGLPaintEnginePrivate::updateDepthClip()
     const QVector<QRect> rects = q->state()->clipEnabled ? q->state()->clipRegion.rects() : q->systemClip().rects();
 
     // rectangle count * 2 (triangles) * vertex count * component count (Z omitted)
-    QDataBuffer<q_vertexType> clipVertex(rects.size()*2*3*2);
+    QDataBuffer<GLfloat> clipVertex(rects.size()*2*3*2);
     for (int i = 0; i < rects.size(); ++i) {
-        q_vertexType x = i2vt(rects.at(i).left());
-        q_vertexType w = i2vt(rects.at(i).width());
-        q_vertexType h = i2vt(rects.at(i).height());
-        q_vertexType y = i2vt(rects.at(i).top());
+        GLfloat x = GLfloat(rects.at(i).left());
+        GLfloat w = GLfloat(rects.at(i).width());
+        GLfloat h = GLfloat(rects.at(i).height());
+        GLfloat y = GLfloat(rects.at(i).top());
 
         // First triangle
         clipVertex.add(x);
@@ -2314,7 +2311,7 @@ void QOpenGLPaintEnginePrivate::updateDepthClip()
         glLoadIdentity();
 
         glEnableClientState(GL_VERTEX_ARRAY);
-        glVertexPointer(2, q_vertexTypeEnum, 0, clipVertex.data());
+        glVertexPointer(2, GL_FLOAT, 0, clipVertex.data());
 
         glDrawArrays(GL_TRIANGLES, 0, rects.size()*2*3);
         glDisableClientState(GL_VERTEX_ARRAY);
@@ -3106,8 +3103,8 @@ 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);
+extern void qt_add_rect_to_array(const QRectF &r, GLfloat *array);
+extern void qt_add_texcoords_to_array(qreal x1, qreal y1, qreal x2, qreal y2, GLfloat *array);
 
 void QGLTrapezoidMaskGenerator::drawMask(const QRect &rect)
 {
@@ -3138,7 +3135,7 @@ void QGLTrapezoidMaskGenerator::drawMask(const QRect &rect)
 
     // clear mask
     glBlendFunc(GL_ZERO, GL_ZERO); // clear
-    glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
     glEnableClientState(GL_VERTEX_ARRAY);
     glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
     glDisableClientState(GL_VERTEX_ARRAY);
@@ -3345,15 +3342,15 @@ void QGLEllipseMaskGenerator::drawMask(const QRect &rect)
     QTransform gl_to_qt(1, 0, 0, -1, 0, offscreen->drawableSize().height());
     QTransform inv_matrix = gl_to_qt * matrix().inverted() * translate;
 
-    float m[3][4] = { { inv_matrix.m11(), inv_matrix.m12(), inv_matrix.m13() },
-                      { inv_matrix.m21(), inv_matrix.m22(), inv_matrix.m23() },
-                      { inv_matrix.m31(), inv_matrix.m32(), inv_matrix.m33() } };
+    float m[3][4] = { { float(inv_matrix.m11()), float(inv_matrix.m12()), float(inv_matrix.m13()) },
+                      { float(inv_matrix.m21()), float(inv_matrix.m22()), float(inv_matrix.m23()) },
+                      { float(inv_matrix.m31()), float(inv_matrix.m32()), float(inv_matrix.m33()) } };
 
     QPoint offs(screen_rect.left() - rect.left(), (offscreen->drawableSize().height() - screen_rect.top())
                                                 - (offscreen->offscreenSize().height() - rect.top()));
 
     // last component needs to be 1.0f to avoid Nvidia bug on linux
-    float ellipse_offset[4] = { offs.x(), offs.y(), 0.0f, 1.0f };
+    float ellipse_offset[4] = { float(offs.x()), float(offs.y()), 0.0f, 1.0f };
 
     GLfloat vertexArray[4 * 2];
     qt_add_rect_to_array(rect, vertexArray);
@@ -3369,7 +3366,7 @@ void QGLEllipseMaskGenerator::drawMask(const QRect &rect)
     glProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, maskVariableLocations[VAR_ELLIPSE_OFFSET], ellipse_offset);
 
     glEnableClientState(GL_VERTEX_ARRAY);
-    glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
     glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
     glDisableClientState(GL_VERTEX_ARRAY);
     glDisable(GL_FRAGMENT_PROGRAM_ARB);
@@ -3399,7 +3396,7 @@ void QOpenGLPaintEnginePrivate::drawFastRect(const QRectF &r)
     Q_Q(QOpenGLPaintEngine);
     DEBUG_ONCE_STR("QOpenGLPaintEngine::drawRects(): drawing fast rect");
 
-    q_vertexType vertexArray[10];
+    GLfloat vertexArray[10];
     qt_add_rect_to_array(r, vertexArray);
 
     if (has_pen)
@@ -3420,7 +3417,7 @@ void QOpenGLPaintEnginePrivate::drawFastRect(const QRectF &r)
 
         if (fast_style && has_fast_composition_mode) {
             glEnableClientState(GL_VERTEX_ARRAY);
-            glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
+            glVertexPointer(2, GL_FLOAT, 0, vertexArray);
             glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
             glDisableClientState(GL_VERTEX_ARRAY);
         } else {
@@ -3439,7 +3436,7 @@ void QOpenGLPaintEnginePrivate::drawFastRect(const QRectF &r)
             vertexArray[8] = vertexArray[0];
             vertexArray[9] = vertexArray[1];
 
-            glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
+            glVertexPointer(2, GL_FLOAT, 0, vertexArray);
             glEnableClientState(GL_VERTEX_ARRAY);
             glDrawArrays(GL_LINE_STRIP, 0, 5);
             glDisableClientState(GL_VERTEX_ARRAY);
@@ -3546,7 +3543,7 @@ void QOpenGLPaintEngine::drawRects(const QRectF *rects, int rectCount)
     }
 }
 
-static void addQuadAsTriangle(q_vertexType *quad, q_vertexType *triangle)
+static void addQuadAsTriangle(GLfloat *quad, GLfloat *triangle)
 {
     triangle[0] = quad[0];
     triangle[1] = quad[1];
@@ -3607,7 +3604,7 @@ void QOpenGLPaintEngine::drawPoints(const QPointF *points, int pointCount)
     d->flushDrawQueue();
 
     if (d->has_fast_pen) {
-        QVarLengthArray<q_vertexType> vertexArray(6 * pointCount);
+        QVarLengthArray<GLfloat> vertexArray(6 * pointCount);
 
         glMatrixMode(GL_MODELVIEW);
         glPushMatrix();
@@ -3617,25 +3614,22 @@ void QOpenGLPaintEngine::drawPoints(const QPointF *points, int pointCount)
         for (int i = 0; i < pointCount; ++i) {
             QPointF mapped = d->matrix.map(points[i]);
 
-            qreal xf = qRound(mapped.x());
-            qreal yf = qRound(mapped.y());
-
-            q_vertexType x = f2vt(xf);
-            q_vertexType y = f2vt(yf);
+            GLfloat x = GLfloat(qRound(mapped.x()));
+            GLfloat y = GLfloat(qRound(mapped.y()));
 
             vertexArray[j++] = x;
-            vertexArray[j++] = y - f2vt(0.5);
+            vertexArray[j++] = y - 0.5f;
 
-            vertexArray[j++] = x + f2vt(1.5);
-            vertexArray[j++] = y + f2vt(1.0);
+            vertexArray[j++] = x + 1.5f;
+            vertexArray[j++] = y + 1.0f;
 
             vertexArray[j++] = x;
-            vertexArray[j++] = y + f2vt(1.0);
+            vertexArray[j++] = y + 1.0f;
         }
 
         glEnableClientState(GL_VERTEX_ARRAY);
 
-        glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray.constData());
+        glVertexPointer(2, GL_FLOAT, 0, vertexArray.constData());
         glDrawArrays(GL_TRIANGLES, 0, pointCount*3);
 
         glDisableClientState(GL_VERTEX_ARRAY);
@@ -3652,7 +3646,7 @@ void QOpenGLPaintEngine::drawPoints(const QPointF *points, int pointCount)
     }
     else {
         Q_ASSERT(sizeof(QPointF) == 8);
-        glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
+        glVertexPointer(2, GL_FLOAT, 0, vertexArray);
     }
 
     glEnableClientState(GL_VERTEX_ARRAY);
@@ -3720,47 +3714,47 @@ void QOpenGLPaintEngine::drawLines(const QLineF *lines, int lineCount)
                 }
             }
 
-            q_vertexType endCap = f2vt(d->cpen.capStyle() == Qt::FlatCap ? 0 : 0.5);
+            GLfloat endCap = d->cpen.capStyle() == Qt::FlatCap ? 0.0f : 0.5f;
             if (useRects) {
-                QVarLengthArray<q_vertexType> vertexArray(12 * lineCount);
+                QVarLengthArray<GLfloat> vertexArray(12 * lineCount);
 
-                q_vertexType quad[8];
+                GLfloat quad[8];
                 for (int i = 0; i < lineCount; ++i) {
-                    q_vertexType x1 = f2vt(lines[i].x1());
-                    q_vertexType x2 = f2vt(lines[i].x2());
-                    q_vertexType y1 = f2vt(lines[i].y1());
-                    q_vertexType y2 = f2vt(lines[i].y2());
+                    GLfloat x1 = lines[i].x1();
+                    GLfloat x2 = lines[i].x2();
+                    GLfloat y1 = lines[i].y1();
+                    GLfloat y2 = lines[i].y2();
 
                     if (x1 == x2) {
                         if (y1 > y2)
                             qSwap(y1, y2);
 
-                        quad[0] = x1 - f2vt(0.5);
+                        quad[0] = x1 - 0.5f;
                         quad[1] = y1 - endCap;
 
-                        quad[2] = x1 + f2vt(0.5);
+                        quad[2] = x1 + 0.5f;
                         quad[3] = y1 - endCap;
 
-                        quad[4] = x1 + f2vt(0.5);
+                        quad[4] = x1 + 0.5f;
                         quad[5] = y2 + endCap;
 
-                        quad[6] = x1 - f2vt(0.5);
+                        quad[6] = x1 - 0.5f;
                         quad[7] = y2 + endCap;
                     } else {
                         if (x1 > x2)
                             qSwap(x1, x2);
 
                         quad[0] = x1 - endCap;
-                        quad[1] = y1 + f2vt(0.5);
+                        quad[1] = y1 + 0.5f;
 
                         quad[2] = x1 - endCap;
-                        quad[3] = y1 - f2vt(0.5);
+                        quad[3] = y1 - 0.5f;
 
                         quad[4] = x2 + endCap;
-                        quad[5] = y1 - f2vt(0.5);
+                        quad[5] = y1 - 0.5f;
 
                         quad[6] = x2 + endCap;
-                        quad[7] = y1 + f2vt(0.5);
+                        quad[7] = y1 + 0.5f;
                     }
 
                     addQuadAsTriangle(quad, &vertexArray[12*i]);
@@ -3768,26 +3762,26 @@ void QOpenGLPaintEngine::drawLines(const QLineF *lines, int lineCount)
 
                 glEnableClientState(GL_VERTEX_ARRAY);
 
-                glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray.constData());
+                glVertexPointer(2, GL_FLOAT, 0, vertexArray.constData());
                 glDrawArrays(GL_TRIANGLES, 0, lineCount*6);
 
                 glDisableClientState(GL_VERTEX_ARRAY);
             } else {
-                QVarLengthArray<q_vertexType> vertexArray(4 * lineCount);
+                QVarLengthArray<GLfloat> vertexArray(4 * lineCount);
                 for (int i = 0; i < lineCount; ++i) {
                     const QPointF a = lines[i].p1();
-                    vertexArray[4*i]   = f2vt(lines[i].x1());
-                    vertexArray[4*i+1] = f2vt(lines[i].y1());
-                    vertexArray[4*i+2] = f2vt(lines[i].x2());
-                    vertexArray[4*i+3] = f2vt(lines[i].y2());
+                    vertexArray[4*i]   = lines[i].x1();
+                    vertexArray[4*i+1] = lines[i].y1();
+                    vertexArray[4*i+2] = lines[i].x2();
+                    vertexArray[4*i+3] = lines[i].y2();
                 }
 
                 glEnableClientState(GL_VERTEX_ARRAY);
 
-                glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray.constData());
+                glVertexPointer(2, GL_FLOAT, 0, vertexArray.constData());
                 glDrawArrays(GL_LINES, 0, lineCount*2);
 
-                glVertexPointer(2, q_vertexTypeEnum, 4*sizeof(q_vertexType), vertexArray.constData() + 2);
+                glVertexPointer(2, GL_FLOAT, 4*sizeof(GLfloat), vertexArray.constData() + 2);
                 glDrawArrays(GL_POINTS, 0, lineCount);
 
                 glDisableClientState(GL_VERTEX_ARRAY);
@@ -3874,7 +3868,7 @@ void QOpenGLPaintEngine::drawPolygon(const QPointF *points, int pointCount, Poly
             }
             else {
                 Q_ASSERT(sizeof(QPointF) == 8);
-                glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
+                glVertexPointer(2, GL_FLOAT, 0, vertexArray);
             }
 
             glEnableClientState(GL_VERTEX_ARRAY);
@@ -3893,12 +3887,12 @@ void QOpenGLPaintEngine::drawPolygon(const QPointF *points, int pointCount, Poly
     if (d->has_pen) {
         if (d->has_fast_pen && !d->high_quality_antialiasing) {
             d->setGradientOps(d->cpen.brush(), bounds);
-            QVarLengthArray<q_vertexType> vertexArray(pointCount*2 + 2);
-            glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray.constData());
+            QVarLengthArray<GLfloat> vertexArray(pointCount*2 + 2);
+            glVertexPointer(2, GL_FLOAT, 0, vertexArray.constData());
             int i;
             for (i=0; i<pointCount; ++i) {
-                vertexArray[i*2] = f2vt(points[i].x());
-                vertexArray[i*2+1] = f2vt(points[i].y());
+                vertexArray[i*2] = points[i].x();
+                vertexArray[i*2+1] = points[i].y();
             }
 
             glEnableClientState(GL_VERTEX_ARRAY);
@@ -4074,7 +4068,7 @@ void QOpenGLPaintEnginePrivate::strokePathFastPen(const QPainterPath &path, bool
         switch (e.type) {
         case QPainterPath::MoveToElement:
             if (i != 0) {
-                glVertexPointer(2, q_vertexTypeEnum, 0, tess_points.data());
+                glVertexPointer(2, GL_FLOAT, 0, tess_points.data());
                 glDrawArrays(GL_LINE_STRIP, 0, tess_points.size());
                 tess_points.reset();
             }
@@ -4124,7 +4118,7 @@ void QOpenGLPaintEnginePrivate::strokePathFastPen(const QPainterPath &path, bool
             break;
         } // end of switch
     }
-    glVertexPointer(2, q_vertexTypeEnum, 0, tess_points.data());
+    glVertexPointer(2, GL_FLOAT, 0, tess_points.data());
     glDrawArrays(GL_LINE_STRIP, 0, tess_points.size());
     glDisableClientState(GL_VERTEX_ARRAY);
 #endif
@@ -4391,8 +4385,8 @@ void QOpenGLPaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pm, con
             glRotatef(180.0, 0.0, 0.0, 1.0);
         }
 
-        q_vertexType vertexArray[4*2];
-        q_vertexType texCoordArray[4*2];
+        GLfloat vertexArray[4*2];
+        GLfloat texCoordArray[4*2];
 
         double offset_x = offset.x() / pm.width();
         double offset_y = offset.y() / pm.height();
@@ -4401,8 +4395,8 @@ void QOpenGLPaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pm, con
         qt_add_texcoords_to_array(offset_x, offset_y,
                                   tc_w + offset_x, tc_h + offset_y, texCoordArray);
 
-        glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
-        glTexCoordPointer(2, q_vertexTypeEnum, 0, texCoordArray);
+        glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+        glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
 
         glEnableClientState(GL_VERTEX_ARRAY);
         glEnableClientState(GL_TEXTURE_COORD_ARRAY);
@@ -4483,14 +4477,14 @@ void QOpenGLPaintEngine::drawTextureRect(int tx_width, int tx_height, const QRec
         y2 = sr.y();
     }
 
-    q_vertexType vertexArray[4*2];
-    q_vertexType texCoordArray[4*2];
+    GLfloat vertexArray[4*2];
+    GLfloat texCoordArray[4*2];
 
     qt_add_rect_to_array(r, vertexArray);
     qt_add_texcoords_to_array(x1, y2, x2, y1, texCoordArray);
 
-    glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
-    glTexCoordPointer(2, q_vertexTypeEnum, 0, texCoordArray);
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
 
     glEnableClientState(GL_VERTEX_ARRAY);
     glEnableClientState(GL_TEXTURE_COORD_ARRAY);
@@ -4555,7 +4549,7 @@ public:
     QGLGlyphCache() : QObject(0) { current_cache = 0; }
     ~QGLGlyphCache();
     QGLGlyphCoord *lookup(QFontEngine *, glyph_t);
-    void cacheGlyphs(QGLContext *, const QTextItemInt &, const QVarLengthArray<glyph_t> &);
+    void cacheGlyphs(QGLContext *, QFontEngine *, glyph_t *glyphs, int numGlyphs);
     void cleanCache();
     void allocTexture(int width, int height, GLuint texture);
 
@@ -4707,8 +4701,8 @@ static QImage getCurrentTexture(const QColor &color, QGLFontTexture *font_tex)
 }
 #endif
 
-void QGLGlyphCache::cacheGlyphs(QGLContext *context, const QTextItemInt &ti,
-                                const QVarLengthArray<glyph_t> &glyphs)
+void QGLGlyphCache::cacheGlyphs(QGLContext *context, QFontEngine *fontEngine,
+                                glyph_t *glyphs, int numGlyphs)
 {
     QGLContextHash::const_iterator dev_it = qt_context_cache.constFind(context);
     QGLFontGlyphHash *font_cache = 0;
@@ -4744,25 +4738,25 @@ void QGLGlyphCache::cacheGlyphs(QGLContext *context, const QTextItemInt &ti,
     }
     Q_ASSERT(font_cache != 0);
 
-    QGLFontGlyphHash::const_iterator cache_it = font_cache->constFind(ti.fontEngine);
+    QGLFontGlyphHash::const_iterator cache_it = font_cache->constFind(fontEngine);
     QGLGlyphHash *cache = 0;
     if (cache_it == font_cache->constEnd()) {
         cache = new QGLGlyphHash;
-        font_cache->insert(ti.fontEngine, cache);
-        connect(ti.fontEngine, SIGNAL(destroyed(QObject*)), SLOT(fontEngineDestroyed(QObject*)));
+        font_cache->insert(fontEngine, cache);
+        connect(fontEngine, SIGNAL(destroyed(QObject*)), SLOT(fontEngineDestroyed(QObject*)));
     } else {
         cache = cache_it.value();
     }
     current_cache = cache;
 
     quint64 font_key = (reinterpret_cast<quint64>(context_key ? context_key : context) << 32)
-                       | reinterpret_cast<quint64>(ti.fontEngine);
+                       | reinterpret_cast<quint64>(fontEngine);
     QGLFontTexHash::const_iterator it = qt_font_textures.constFind(font_key);
     QGLFontTexture *font_tex;
     if (it == qt_font_textures.constEnd()) {
         GLuint font_texture;
         glGenTextures(1, &font_texture);
-        GLint tex_height = qt_next_power_of_two(qRound(ti.ascent.toReal() + ti.descent.toReal())+2);
+        GLint tex_height = qt_next_power_of_two(qRound(fontEngine->ascent().toReal() + fontEngine->descent().toReal())+2);
         GLint tex_width = qt_next_power_of_two(tex_height*30); // ###
         GLint max_tex_size;
         glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_tex_size);
@@ -4784,16 +4778,16 @@ void QGLGlyphCache::cacheGlyphs(QGLContext *context, const QTextItemInt &ti,
         glBindTexture(GL_TEXTURE_2D, font_tex->texture);
     }
 
-    for (int i=0; i< glyphs.size(); ++i) {
+    for (int i=0; i< numGlyphs; ++i) {
         QGLGlyphHash::const_iterator it = cache->constFind(glyphs[i]);
         if (it == cache->constEnd()) {
             // render new glyph and put it in the cache
-            glyph_metrics_t metrics = ti.fontEngine->boundingBox(glyphs[i]);
+            glyph_metrics_t metrics = fontEngine->boundingBox(glyphs[i]);
             int glyph_width = qRound(metrics.width.toReal())+2;
-            int glyph_height = qRound(ti.ascent.toReal() + ti.descent.toReal())+2;
+            int glyph_height = qRound(fontEngine->ascent().toReal() + fontEngine->descent().toReal())+2;
 
             if (font_tex->x_offset + glyph_width + x_margin > font_tex->width) {
-                int strip_height = qt_next_power_of_two(qRound(ti.ascent.toReal() + ti.descent.toReal())+2);
+                int strip_height = qt_next_power_of_two(qRound(fontEngine->ascent().toReal() + fontEngine->descent().toReal())+2);
                 font_tex->x_offset = x_margin;
                 font_tex->y_offset += strip_height;
                 if (font_tex->y_offset >= font_tex->height) {
@@ -4826,7 +4820,7 @@ void QGLGlyphCache::cacheGlyphs(QGLContext *context, const QTextItemInt &ti,
                 }
             }
 
-            QImage glyph_im(ti.fontEngine->alphaMapForGlyph(glyphs[i]));
+            QImage glyph_im(fontEngine->alphaMapForGlyph(glyphs[i]));
             glyph_im = glyph_im.convertToFormat(QImage::Format_Indexed8);
             glyph_width = glyph_im.width();
             Q_ASSERT(glyph_width >= 0);
@@ -4906,30 +4900,15 @@ void qgl_cleanup_glyph_cache(QGLContext *ctx)
     qt_glyph_cache()->cleanupContext(ctx);
 }
 
-void QOpenGLPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem)
+void QOpenGLPaintEngine::drawStaticTextItem(QStaticTextItem *textItem)
 {
     Q_D(QOpenGLPaintEngine);
 
-    const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem);
-
-    // fall back to drawing a polygon if the scale factor is large, or
-    // we use a gradient pen
-    if ((d->matrix.det() > 1) || (d->pen_brush_style >= Qt::LinearGradientPattern
-                                  && d->pen_brush_style <= Qt::ConicalGradientPattern)) {
-        QPaintEngine::drawTextItem(p, textItem);
-        return;
-    }
-
     d->flushDrawQueue();
 
-    // add the glyphs used to the glyph texture cache
-    QVarLengthArray<QFixedPoint> positions;
-    QVarLengthArray<glyph_t> glyphs;
-    QTransform matrix = QTransform::fromTranslate(qRound(p.x()), qRound(p.y()));
-    ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
-
     // make sure the glyphs we want to draw are in the cache
-    qt_glyph_cache()->cacheGlyphs(d->device->context(), ti, glyphs);
+    qt_glyph_cache()->cacheGlyphs(d->device->context(), textItem->fontEngine, textItem->glyphs,
+                                  textItem->numGlyphs);
 
     d->setGradientOps(Qt::SolidPattern, QRectF()); // turns off gradient ops
     qt_glColor4ubv(d->pen_color);
@@ -4943,21 +4922,21 @@ void QOpenGLPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
 #endif
 
     // do the actual drawing
-    q_vertexType vertexArray[4*2];
-    q_vertexType texCoordArray[4*2];
+    GLfloat vertexArray[4*2];
+    GLfloat texCoordArray[4*2];
 
-    glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
-    glTexCoordPointer(2, q_vertexTypeEnum, 0, texCoordArray);
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
 
     glEnableClientState(GL_VERTEX_ARRAY);
     glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-    bool antialias = !(ti.fontEngine->fontDef.styleStrategy & QFont::NoAntialias)
-                   && (d->matrix.type() > QTransform::TxTranslate);
+    bool antialias = !(textItem->fontEngine->fontDef.styleStrategy & QFont::NoAntialias)
+				   && (d->matrix.type() > QTransform::TxTranslate);
     glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, antialias ? GL_LINEAR : GL_NEAREST);
     glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, antialias ? GL_LINEAR : GL_NEAREST);
 
-    for (int i=0; i< glyphs.size(); ++i) {
-        QGLGlyphCoord *g = qt_glyph_cache()->lookup(ti.fontEngine, glyphs[i]);
+    for (int i=0; i< textItem->numGlyphs; ++i) {
+        QGLGlyphCoord *g = qt_glyph_cache()->lookup(textItem->fontEngine, textItem->glyphs[i]);
 
         // we don't cache glyphs with no width/height
         if (!g)
@@ -4969,8 +4948,8 @@ void QOpenGLPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
         x2 = x1 + g->width;
         y2 = y1 + g->height;
 
-        QPointF logical_pos((positions[i].x - g->x_offset).toReal(),
-                            (positions[i].y + g->y_offset).toReal());
+        QPointF logical_pos((textItem->glyphPositions[i].x - g->x_offset).toReal(),
+                            (textItem->glyphPositions[i].y + g->y_offset).toReal());
 
         qt_add_rect_to_array(QRectF(logical_pos, QSizeF(g->log_width, g->log_height)), vertexArray);
         qt_add_texcoords_to_array(x1, y1, x2, y2, texCoordArray);
@@ -4987,6 +4966,40 @@ void QOpenGLPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
     // XXX: This may not be needed as this behavior does seem to be caused by driver bug
     glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 #endif
+
+}
+
+void QOpenGLPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem)
+{
+    Q_D(QOpenGLPaintEngine);
+
+    const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem);
+
+    // fall back to drawing a polygon if the scale factor is large, or
+    // we use a gradient pen
+    if ((d->matrix.det() > 1) || (d->pen_brush_style >= Qt::LinearGradientPattern
+                                  && d->pen_brush_style <= Qt::ConicalGradientPattern)) {
+        QPaintEngine::drawTextItem(p, textItem);
+        return;
+    }
+
+    // add the glyphs used to the glyph texture cache
+    QVarLengthArray<QFixedPoint> positions;
+    QVarLengthArray<glyph_t> glyphs;
+    QTransform matrix = QTransform::fromTranslate(qRound(p.x()), qRound(p.y()));
+    ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
+
+    {
+        QStaticTextItem staticTextItem;
+        staticTextItem.chars = ti.chars;
+        staticTextItem.fontEngine = ti.fontEngine;
+        staticTextItem.glyphs = glyphs.data();
+        staticTextItem.numChars = ti.num_chars;
+        staticTextItem.numGlyphs = glyphs.size();
+        staticTextItem.glyphPositions = positions.data();
+        drawStaticTextItem(&staticTextItem);
+    }
+
 }
 
 
@@ -5160,7 +5173,7 @@ void QOpenGLPaintEnginePrivate::composite(const QRectF &rect, const QPoint &mask
     Q_UNUSED(rect);
     Q_UNUSED(maskOffset);
 #else
-    q_vertexType vertexArray[8];
+    GLfloat vertexArray[8];
     qt_add_rect_to_array(rect, vertexArray);
 
     composite(GL_TRIANGLE_FAN, vertexArray, 4, maskOffset);
@@ -5168,7 +5181,7 @@ void QOpenGLPaintEnginePrivate::composite(const QRectF &rect, const QPoint &mask
 }
 
 
-void QOpenGLPaintEnginePrivate::composite(GLuint primitive, const q_vertexType *vertexArray, int vertexCount, const QPoint &maskOffset)
+void QOpenGLPaintEnginePrivate::composite(GLuint primitive, const GLfloat *vertexArray, int vertexCount, const QPoint &maskOffset)
 {
 #ifdef QT_OPENGL_ES
     Q_UNUSED(primitive);
@@ -5191,8 +5204,8 @@ void QOpenGLPaintEnginePrivate::composite(GLuint primitive, const q_vertexType *
         qreal minX = 1e9, minY = 1e9, maxX = -1e9, maxY = -1e9;
 
         for (int i = 0; i < vertexCount; ++i) {
-            qreal x = vt2f(vertexArray[2 * i]);
-            qreal y = vt2f(vertexArray[2 * i + 1]);
+            qreal x = vertexArray[2 * i];
+            qreal y = vertexArray[2 * i + 1];
 
             qreal tx, ty;
             matrix.map(x, y, &tx, &ty);
@@ -5251,7 +5264,7 @@ void QOpenGLPaintEnginePrivate::composite(GLuint primitive, const q_vertexType *
     }
 
     glEnableClientState(GL_VERTEX_ARRAY);
-    glVertexPointer(2, q_vertexTypeEnum, 0, vertexArray);
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
     glEnable(GL_FRAGMENT_PROGRAM_ARB);
     GLuint program = qt_gl_program_cache()->getProgram(device->context(),
                                                        fragment_brush,
diff --git a/src/opengl/qpaintengine_opengl_p.h b/src/opengl/qpaintengine_opengl_p.h
index de0086a..55f7792 100644
--- a/src/opengl/qpaintengine_opengl_p.h
+++ b/src/opengl/qpaintengine_opengl_p.h
@@ -133,6 +133,7 @@ public:
     void drawImage(const QRectF &r, const QImage &image, const QRectF &sr,
                    Qt::ImageConversionFlags conversionFlags);
     void drawTextItem(const QPointF &p, const QTextItem &ti);
+    void drawStaticTextItem(QStaticTextItem *staticTextItem);
 
     void drawEllipse(const QRectF &rect);
 
diff --git a/src/opengl/qpixmapdata_x11gl_egl.cpp b/src/opengl/qpixmapdata_x11gl_egl.cpp
index 229f75a..3ab385a 100644
--- a/src/opengl/qpixmapdata_x11gl_egl.cpp
+++ b/src/opengl/qpixmapdata_x11gl_egl.cpp
@@ -41,29 +41,36 @@
 
 #include <QDebug>
 
-#include <private/qgl_p.h>
-#include <private/qegl_p.h>
-#include <private/qeglproperties_p.h>
+#include <QtGui/private/qt_x11_p.h>
+#include <QtGui/private/qegl_p.h>
+#include <QtGui/private/qeglproperties_p.h>
+#include <QtGui/private/qeglcontext_p.h>
 
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
-#include <private/qpaintengineex_opengl2_p.h>
+#if !defined(QT_OPENGL_ES_1)
+#include <QtOpenGL/private/qpaintengineex_opengl2_p.h>
 #endif
 
 #ifndef QT_OPENGL_ES_2
-#include <private/qpaintengine_opengl_p.h>
+#include <QtOpenGL/private/qpaintengine_opengl_p.h>
 #endif
 
+#include <QtOpenGL/private/qgl_p.h>
+#include <QtOpenGL/private/qgl_egl_p.h>
+
 #include "qpixmapdata_x11gl_p.h"
 
 QT_BEGIN_NAMESPACE
 
-extern EGLConfig qt_chooseEGLConfigForPixmap(bool hasAlpha, bool readOnly); // in qgl_x11egl.cpp
-extern bool qt_createEGLSurfaceForPixmap(QPixmapData* pmd, bool readOnly); // in qgl_x11egl.cpp
 
 // On 16bpp systems, RGB & ARGB pixmaps are different bit-depths and therefore need
 // different contexts:
-static EGLContext qPixmapARGBSharedEglContext = EGL_NO_CONTEXT;
-static EGLContext qPixmapRGBSharedEglContext = EGL_NO_CONTEXT;
+
+Q_GLOBAL_STATIC(QEglContext, qt_x11gl_rgbContext);
+Q_GLOBAL_STATIC(QEglContext, qt_x11gl_argbContext)
+
+QEglContext* QX11GLPixmapData::rgbContext = 0;
+QEglContext* QX11GLPixmapData::argbContext = 0;
+
 
 bool QX11GLPixmapData::hasX11GLPixmaps()
 {
@@ -75,111 +82,94 @@ bool QX11GLPixmapData::hasX11GLPixmaps()
 
     checkedForX11Pixmaps = true;
 
-    QX11PixmapData *argbPixmapData = 0;
-    QX11PixmapData *rgbPixmapData = 0;
+    EGLint rgbConfigId;
+    EGLint argbConfigId;
+
     do {
         if (qgetenv("QT_USE_X11GL_PIXMAPS").isEmpty())
             break;
 
-        // Check we actually have EGL configs which support pixmaps
-        EGLConfig argbConfig = qt_chooseEGLConfigForPixmap(true, false);
-        EGLConfig rgbConfig = qt_chooseEGLConfigForPixmap(false, false);
+        EGLConfig rgbConfig = QEgl::defaultConfig(QInternal::Pixmap, QEgl::OpenGL, QEgl::Renderable);
+        EGLConfig argbConfig = QEgl::defaultConfig(QInternal::Pixmap, QEgl::OpenGL,
+                                                   QEgl::Renderable | QEgl::Translucent);
 
-        if (argbConfig == 0 || rgbConfig == 0)
-            break;
+        eglGetConfigAttrib(QEgl::display(), rgbConfig, EGL_CONFIG_ID, &rgbConfigId);
+        eglGetConfigAttrib(QEgl::display(), argbConfig, EGL_CONFIG_ID, &argbConfigId);
 
-        // Create the shared contexts:
-        eglBindAPI(EGL_OPENGL_ES_API);
-        EGLint contextAttribs[] = {
-#if defined(QT_OPENGL_ES_2)
-            EGL_CONTEXT_CLIENT_VERSION, 2,
-#endif
-            EGL_NONE
-        };
-        qPixmapARGBSharedEglContext = eglCreateContext(QEglContext::display(),
-                                                       argbConfig, 0, contextAttribs);
-
-        if (argbConfig == rgbConfig) {
-            // If the configs are the same, we can re-use the same context.
-            qPixmapRGBSharedEglContext = qPixmapARGBSharedEglContext;
-        } else {
-            qPixmapRGBSharedEglContext = eglCreateContext(QEglContext::display(),
-                                                           rgbConfig, 0, contextAttribs);
+        if (!rgbContext) {
+            rgbContext = qt_x11gl_rgbContext();
+            rgbContext->setConfig(rgbConfig);
+            rgbContext->createContext();
         }
 
-        argbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
-        argbPixmapData->resize(100, 100);
-        argbPixmapData->fill(Qt::transparent); // Force ARGB
+        if (!rgbContext->isValid())
+            break;
+
+        // If the configs are the same, use the same egl contexts:
+        if (rgbConfig == argbConfig)
+            argbContext = rgbContext;
 
-        if (!qt_createEGLSurfaceForPixmap(argbPixmapData, false))
+        if (!argbContext) {
+            argbContext = qt_x11gl_argbContext();
+            argbContext->setConfig(argbConfig);
+            argbContext->createContext();
+        }
+
+        if (!argbContext->isValid())
             break;
 
-        haveX11Pixmaps = eglMakeCurrent(QEglContext::display(),
-                                        (EGLSurface)argbPixmapData->gl_surface,
-                                        (EGLSurface)argbPixmapData->gl_surface,
-                                        qPixmapARGBSharedEglContext);
+        {
+            QX11PixmapData *argbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
+            argbPixmapData->resize(100, 100);
+            argbPixmapData->fill(Qt::transparent); // Force ARGB
+            QPixmap argbPixmap(argbPixmapData);
+            EGLSurface argbPixmapSurface = QEgl::createSurface(&argbPixmap, argbConfig);
+            haveX11Pixmaps = argbContext->makeCurrent(argbPixmapSurface);
+            argbContext->doneCurrent();
+            eglDestroySurface(QEgl::display(), argbPixmapSurface);
+        }
+
         if (!haveX11Pixmaps) {
-            EGLint err = eglGetError();
-            qWarning() << "Unable to make pixmap config current:" << err << QEglContext::errorString(err);
+            qWarning() << "Unable to make pixmap surface current:" << QEgl::errorString();
             break;
         }
 
-        // If the ARGB & RGB configs are the same, we don't need to check RGB too
-        if (haveX11Pixmaps && (argbConfig != rgbConfig)) {
-            rgbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
+        // If the ARGB & RGB configs are different, check RGB too:
+        if (argbConfig != rgbConfig) {
+            QX11PixmapData *rgbPixmapData = new QX11PixmapData(QPixmapData::PixmapType);
             rgbPixmapData->resize(100, 100);
             rgbPixmapData->fill(Qt::red);
 
-            // Try to actually create an EGL pixmap surface
-            if (!qt_createEGLSurfaceForPixmap(rgbPixmapData, false))
-                break;
+            QPixmap rgbPixmap(rgbPixmapData);
+            EGLSurface rgbPixmapSurface = QEgl::createSurface(&rgbPixmap, rgbConfig);
+            haveX11Pixmaps = rgbContext->makeCurrent(rgbPixmapSurface);
+            rgbContext->doneCurrent();
+            eglDestroySurface(QEgl::display(), rgbPixmapSurface);
 
-            haveX11Pixmaps = eglMakeCurrent(QEglContext::display(),
-                                            (EGLSurface)rgbPixmapData->gl_surface,
-                                            (EGLSurface)rgbPixmapData->gl_surface,
-                                            qPixmapRGBSharedEglContext);
             if (!haveX11Pixmaps) {
-                EGLint err = eglGetError();
-                qWarning() << "Unable to make pixmap config current:" << err << QEglContext::errorString(err);
+                qWarning() << "Unable to make pixmap config current:" << QEgl::errorString();
                 break;
             }
         }
-    } while (0);
-
-    if (qPixmapARGBSharedEglContext || qPixmapRGBSharedEglContext) {
-        eglMakeCurrent(QEglContext::display(),
-                       EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-    }
 
-    if (argbPixmapData) {
-        if (argbPixmapData->gl_surface)
-            QGLContextPrivate::destroyGlSurfaceForPixmap(argbPixmapData);
-        delete argbPixmapData;
-        argbPixmapData = 0;
-    }
-    if (rgbPixmapData) {
-        if (rgbPixmapData->gl_surface)
-            QGLContextPrivate::destroyGlSurfaceForPixmap(rgbPixmapData);
-        delete rgbPixmapData;
-        rgbPixmapData = 0;
-    }
+        // The pixmap surface destruction hooks are installed by QGLTextureCache, so we
+        // must make sure this is instanciated:
+        QGLTextureCache::instance();
+    } while (0);
 
     if (!haveX11Pixmaps) {
-        // Clean up the context(s) if we can't use X11GL pixmaps
-        if (qPixmapARGBSharedEglContext != EGL_NO_CONTEXT)
-            eglDestroyContext(QEglContext::display(), qPixmapARGBSharedEglContext);
-
-        if (qPixmapRGBSharedEglContext != qPixmapARGBSharedEglContext &&
-            qPixmapRGBSharedEglContext != EGL_NO_CONTEXT)
-        {
-            eglDestroyContext(QEglContext::display(), qPixmapRGBSharedEglContext);
+        if (argbContext && (argbContext != rgbContext)) {
+            delete argbContext;
+            argbContext = 0;
+        }
+        if (rgbContext) {
+            delete rgbContext;
+            rgbContext = 0;
         }
-        qPixmapRGBSharedEglContext = EGL_NO_CONTEXT;
-        qPixmapARGBSharedEglContext = EGL_NO_CONTEXT;
     }
 
     if (haveX11Pixmaps)
-        qDebug("QX11GLPixmapData is supported");
+        qDebug("Using QX11GLPixmapData with EGL config %d for ARGB and config %d for RGB", argbConfigId, rgbConfigId);
     else
         qDebug("QX11GLPixmapData is *NOT* being used");
 
@@ -194,9 +184,65 @@ QX11GLPixmapData::QX11GLPixmapData()
 
 QX11GLPixmapData::~QX11GLPixmapData()
 {
+    if (ctx)
+        delete ctx;
 }
 
-#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)
+
+void QX11GLPixmapData::fill(const QColor &color)
+{
+    if (ctx) {
+        ctx->makeCurrent();
+        glFinish();
+        eglWaitClient();
+    }
+
+    QX11PixmapData::fill(color);
+    XSync(X11->display, False);
+
+    if (ctx) {
+        ctx->makeCurrent();
+        eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+    }
+}
+
+void QX11GLPixmapData::copy(const QPixmapData *data, const QRect &rect)
+{
+    if (ctx) {
+        ctx->makeCurrent();
+        glFinish();
+        eglWaitClient();
+    }
+
+    QX11PixmapData::copy(data, rect);
+    XSync(X11->display, False);
+
+    if (ctx) {
+        ctx->makeCurrent();
+        eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+    }
+}
+
+bool QX11GLPixmapData::scroll(int dx, int dy, const QRect &rect)
+{
+    if (ctx) {
+        ctx->makeCurrent();
+        glFinish();
+        eglWaitClient();
+    }
+
+    bool success = QX11PixmapData::scroll(dx, dy, rect);
+    XSync(X11->display, False);
+
+    if (ctx) {
+        ctx->makeCurrent();
+        eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+    }
+
+    return success;
+}
+
+#if !defined(QT_OPENGL_ES_1)
 Q_GLOBAL_STATIC(QGL2PaintEngineEx, qt_gl_pixmap_2_engine)
 #endif
 
@@ -210,16 +256,15 @@ QPaintEngine* QX11GLPixmapData::paintEngine() const
     // We need to create the context before beginPaint - do it here:
     if (!ctx) {
         ctx = new QGLContext(glFormat());
-        if (ctx->d_func()->eglContext == 0)
-            ctx->d_func()->eglContext = new QEglContext();
-        ctx->d_func()->eglContext->setApi(QEgl::OpenGL);
-        ctx->d_func()->eglContext->setContext(hasAlphaChannel() ? qPixmapARGBSharedEglContext
-                                                                : qPixmapRGBSharedEglContext);
+        Q_ASSERT(ctx->d_func()->eglContext == 0);
+        ctx->d_func()->eglContext = hasAlphaChannel() ? argbContext : rgbContext;
+        // Update the glFormat for the QGLContext:
+        qt_glformat_from_eglconfig(ctx->d_func()->glFormat, ctx->d_func()->eglContext->config());
     }
 
     QPaintEngine* engine;
 
-#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL)
+#if defined(QT_OPENGL_ES_1)
     engine = qt_gl_pixmap_engine();
 #elif defined(QT_OPENGL_ES_2)
     engine = qt_gl_pixmap_2_engine();
@@ -236,7 +281,7 @@ QPaintEngine* QX11GLPixmapData::paintEngine() const
     if (engine->isActive()) {
         qWarning("Pixmap paint engine already active");
 
-#if defined(QT_OPENGL_ES_1) || defined(QT_OPENGL_ES_1_CL)
+#if defined(QT_OPENGL_ES_1)
         engine = new QOpenGLPaintEngine;
 #elif defined(QT_OPENGL_ES_2)
         engine = new QGL2PaintEngineEx;
@@ -257,10 +302,21 @@ QPaintEngine* QX11GLPixmapData::paintEngine() const
 void QX11GLPixmapData::beginPaint()
 {
 //    qDebug("QX11GLPixmapData::beginPaint()");
+    // TODO: Check to see if the surface is renderable
     if ((EGLSurface)gl_surface == EGL_NO_SURFACE) {
-        qt_createEGLSurfaceForPixmap(this, false);
-        ctx->d_func()->eglSurface = (EGLSurface)gl_surface;
-        ctx->d_func()->valid = true; // ;-)
+        QPixmap tmpPixmap(this);
+        EGLConfig cfg = ctx->d_func()->eglContext->config();
+        Q_ASSERT(cfg != QEGL_NO_CONFIG);
+
+//        qDebug("QX11GLPixmapData - using EGL Config ID %d", ctx->d_func()->eglContext->configAttrib(EGL_CONFIG_ID));
+        EGLSurface surface = QEgl::createSurface(&tmpPixmap, cfg);
+        if (surface == EGL_NO_SURFACE) {
+            qWarning() << "Error creating EGL surface for pixmap:" << QEgl::errorString();
+            return;
+        }
+        gl_surface = (void*)surface;
+        ctx->d_func()->eglSurface = surface;
+        ctx->d_func()->valid = true;
     }
     QGLPaintDevice::beginPaint();
 }
diff --git a/src/opengl/qpixmapdata_x11gl_p.h b/src/opengl/qpixmapdata_x11gl_p.h
index c9f4f56..8681336 100644
--- a/src/opengl/qpixmapdata_x11gl_p.h
+++ b/src/opengl/qpixmapdata_x11gl_p.h
@@ -59,6 +59,10 @@
 
 #include <qgl.h>
 
+#ifndef QT_NO_EGL
+#include <QtGui/private/qeglcontext_p.h>
+#endif
+
 QT_BEGIN_NAMESPACE
 
 class QX11GLPixmapData : public QX11PixmapData, public QGLPaintDevice
@@ -67,6 +71,11 @@ public:
     QX11GLPixmapData();
     virtual ~QX11GLPixmapData();
 
+    // Re-implemented from QX11PixmapData:
+    void fill(const QColor &color);
+    void copy(const QPixmapData *data, const QRect &rect);
+    bool scroll(int dx, int dy, const QRect &rect);
+
     // Re-implemented from QGLPaintDevice
     QPaintEngine* paintEngine() const; // Also re-implements QX11PixmapData::paintEngine
     void beginPaint();
@@ -76,6 +85,11 @@ public:
 
     static bool hasX11GLPixmaps();
     static QGLFormat glFormat();
+
+#ifndef QT_NO_EGL
+    static QEglContext* rgbContext;
+    static QEglContext* argbContext;
+#endif
 private:
     mutable QGLContext* ctx;
 };
diff --git a/src/opengl/qwindowsurface_gl.cpp b/src/opengl/qwindowsurface_gl.cpp
index 7a565e6..ca88de3 100644
--- a/src/opengl/qwindowsurface_gl.cpp
+++ b/src/opengl/qwindowsurface_gl.cpp
@@ -82,12 +82,8 @@
 #define GLX_SAMPLES_ARB         100001
 #endif
 
-#ifdef QT_OPENGL_ES_1_CL
-#include "qgl_cl_p.h"
-#endif
-
 #ifdef QT_OPENGL_ES
-#include <private/qegl_p.h>
+#include <private/qeglcontext_p.h>
 #endif
 
 QT_BEGIN_NAMESPACE
@@ -357,18 +353,6 @@ void QGLWindowSurface::hijackWindow(QWidget *widget)
     QGLContext *ctx = new QGLContext(surfaceFormat, widget);
     ctx->create(qt_gl_share_widget()->context());
 
-#if defined(Q_WS_X11) && defined(QT_OPENGL_ES)
-    // Create the EGL surface to draw into.  QGLContext::chooseContext()
-    // does not do this for X11/EGL, but does do it for other platforms.
-    // This probably belongs in qgl_x11egl.cpp.
-    QGLContextPrivate *ctxpriv = ctx->d_func();
-    ctxpriv->eglSurface = ctxpriv->eglContext->createSurface(widget);
-    if (ctxpriv->eglSurface == EGL_NO_SURFACE) {
-        qWarning() << "hijackWindow() could not create EGL surface";
-    }
-    qDebug("QGLWindowSurface - using EGLConfig %d", reinterpret_cast<int>(ctxpriv->eglContext->config()));
-#endif
-
     widgetPrivate->extraData()->glContext = ctx;
 
     union { QGLContext **ctxPtr; void **voidPtr; };
@@ -838,22 +822,22 @@ static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize,
         src.setBottom(src.bottom() / height);
     }
 
-    const q_vertexType tx1 = f2vt(src.left());
-    const q_vertexType tx2 = f2vt(src.right());
-    const q_vertexType ty1 = f2vt(src.top());
-    const q_vertexType ty2 = f2vt(src.bottom());
+    const GLfloat tx1 = src.left();
+    const GLfloat tx2 = src.right();
+    const GLfloat ty1 = src.top();
+    const GLfloat ty2 = src.bottom();
 
-    q_vertexType texCoordArray[4*2] = {
+    GLfloat texCoordArray[4*2] = {
         tx1, ty2, tx2, ty2, tx2, ty1, tx1, ty1
     };
 
-    q_vertexType vertexArray[4*2];
-    extern void qt_add_rect_to_array(const QRectF &r, q_vertexType *array); // qpaintengine_opengl.cpp
+    GLfloat vertexArray[4*2];
+    extern void qt_add_rect_to_array(const QRectF &r, GLfloat *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);
+    glVertexPointer(2, GL_FLOAT, 0, vertexArray);
+    glTexCoordPointer(2, GL_FLOAT, 0, texCoordArray);
 
     glBindTexture(target, tex_id);
     glEnable(target);
diff --git a/src/opengl/qwindowsurface_x11gl.cpp b/src/opengl/qwindowsurface_x11gl.cpp
index 27b91ba..7befe03 100644
--- a/src/opengl/qwindowsurface_x11gl.cpp
+++ b/src/opengl/qwindowsurface_x11gl.cpp
@@ -51,14 +51,16 @@
 QT_BEGIN_NAMESPACE
 
 QX11GLWindowSurface::QX11GLWindowSurface(QWidget* window)
-    : QWindowSurface(window), m_GC(0), m_window(window)
+    : QWindowSurface(window), m_windowGC(0), m_pixmapGC(0), m_window(window)
 {
 }
 
 QX11GLWindowSurface::~QX11GLWindowSurface()
 {
-    if (m_GC)
-        XFree(m_GC);
+    if (m_windowGC)
+        XFree(m_windowGC);
+    if (m_pixmapGC)
+        XFree(m_pixmapGC);
 }
 
 QPaintDevice *QX11GLWindowSurface::paintDevice()
@@ -92,16 +94,22 @@ void QX11GLWindowSurface::flush(QWidget *widget, const QRegion &widgetRegion, co
 //         for  (int i = 0; i < num; ++i)
 //             qDebug() << ' ' << i << rects[i].x << rects[i].x << rects[i].y << rects[i].width << rects[i].height;
 
-    if (m_GC == 0) {
-        m_GC = XCreateGC(X11->display, m_window->handle(), 0, 0);
-        XSetGraphicsExposures(X11->display, m_GC, False);
+    if (m_windowGC == 0) {
+        m_windowGC = XCreateGC(X11->display, m_window->handle(), 0, 0);
+        XSetGraphicsExposures(X11->display, m_windowGC, False);
     }
 
-    XSetClipRectangles(X11->display, m_GC, 0, 0, rects, rectCount, YXBanded);
-    XCopyArea(X11->display, m_backBuffer.handle(), m_window->handle(), m_GC,
+    XSetClipRectangles(X11->display, m_windowGC, 0, 0, rects, rectCount, YXBanded);
+    XCopyArea(X11->display, m_backBuffer.handle(), m_window->handle(), m_windowGC,
               boundingRect.x() + offset.x(), boundingRect.y() + offset.y(),
               boundingRect.width(), boundingRect.height(),
               windowBoundingRect.x(), windowBoundingRect.y());
+
+    QX11GLPixmapData* pmd = static_cast<QX11GLPixmapData*>(m_backBuffer.data_ptr().data());
+    Q_ASSERT(pmd->context());
+    pmd->context()->makeCurrent();
+    XSync(X11->display, False);
+    eglWaitNative(EGL_CORE_NATIVE_ENGINE);
 }
 
 void QX11GLWindowSurface::setGeometry(const QRect &rect)
@@ -113,6 +121,8 @@ void QX11GLWindowSurface::setGeometry(const QRect &rect)
         QX11GLPixmapData *pd = new QX11GLPixmapData;
         pd->resize(newSize.width(), newSize.height());
         m_backBuffer = QPixmap(pd);
+        if (window()->testAttribute(Qt::WA_TranslucentBackground))
+            m_backBuffer.fill(Qt::transparent);
     }
 
 //    if (gc)
@@ -124,10 +134,30 @@ void QX11GLWindowSurface::setGeometry(const QRect &rect)
 
 bool QX11GLWindowSurface::scroll(const QRegion &area, int dx, int dy)
 {
-    Q_UNUSED(area);
-    Q_UNUSED(dx);
-    Q_UNUSED(dy);
-    return false;
+    if (m_backBuffer.isNull())
+        return false;
+
+    Q_ASSERT(m_backBuffer.data_ptr()->classId() == QPixmapData::X11Class);
+
+    QX11GLPixmapData* pmd = static_cast<QX11GLPixmapData*>(m_backBuffer.data_ptr().data());
+    Q_ASSERT(pmd->context());
+    pmd->context()->makeCurrent();
+    glFinish();
+    eglWaitClient();
+
+    if (!m_pixmapGC)
+        m_pixmapGC = XCreateGC(X11->display, m_backBuffer.handle(), 0, 0);
+
+    foreach (const QRect& rect, area.rects()) {
+        XCopyArea(X11->display, m_backBuffer.handle(), m_backBuffer.handle(), m_pixmapGC,
+                  rect.x(), rect.y(), rect.width(), rect.height(),
+                  rect.x()+dx, rect.y()+dy);
+    }
+
+    XSync(X11->display, False);
+    eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+
+    return true;
 }
 
 /*
diff --git a/src/opengl/qwindowsurface_x11gl_p.h b/src/opengl/qwindowsurface_x11gl_p.h
index 90f3ad5..3a952e8 100644
--- a/src/opengl/qwindowsurface_x11gl_p.h
+++ b/src/opengl/qwindowsurface_x11gl_p.h
@@ -70,7 +70,8 @@ public:
     bool scroll(const QRegion &area, int dx, int dy);
 
 private:
-    GC      m_GC;
+    GC      m_windowGC;
+    GC      m_pixmapGC;
     QPixmap m_backBuffer;
     QWidget *m_window;
 };