Merge branch 'qt-master-from-4.6' of scm.dev.nokia.troll.no:qt/qt-integration into master-integration

* 'qt-master-from-4.6' of scm.dev.nokia.troll.no:qt/qt-integration: (160 commits)
  audiodevices example: no devices available
  Assistant: Fix unintended tr context change.
  Add QFontMetrics benchmark.
  Fixed `make test' for xmlpatternsxqts.
  Doc: Put the correct images with the D-Bus and Embedded Linux sections.
  Call cheaper clear() instead of assigning new QString()
  Fix a regression: icons with slightly wrong ICO header did not load.
  Fix some foreach usage to use const refs
  Designer: Fix source code scanning issues.
  googlesuggest example: Add newline to end of file
  Core classes, examples, demos: Some changes from string to char
  Fix header labels on mac with rtl
  Fixed an endless loop if printing web pages.
  doc: Fixed the last qdoc errors.
  don't build unneeded QtDesigner parts on Windows CE
  doc: Document the "Type" enum value as a const in variable.
  Add additional text and painting benchmarks.
  Better support for user-generated binary shaders
  don't falsely complain about mismatched codecfortr
  Fix QSettings default paths not being initialized when setPath() is called
  ...

8 files changed, 443 insertions, 358 deletions

diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
index 556b888..8183f08 100644
--- a/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager.cpp
@@ -184,6 +184,9 @@ QGLEngineSharedShaders::QGLEngineSharedShaders(const QGLContext* context)
     simpleShaderProg->addShader(vertexShader);
     simpleShaderProg->addShader(fragShader);
     simpleShaderProg->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);
+    simpleShaderProg->bindAttributeLocation("pmvMatrix1", QT_PMV_MATRIX_1_ATTR);
+    simpleShaderProg->bindAttributeLocation("pmvMatrix2", QT_PMV_MATRIX_2_ATTR);
+    simpleShaderProg->bindAttributeLocation("pmvMatrix3", QT_PMV_MATRIX_3_ATTR);
     simpleShaderProg->link();
     if (!simpleShaderProg->isLinked()) {
         qCritical() << "Errors linking simple shader:"
@@ -324,6 +327,11 @@ 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) {
+            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);
+        }
 
         newProg->program->link();
         if (!newProg->program->isLinked()) {
@@ -424,7 +432,6 @@ GLuint QGLEngineShaderManager::getUniformLocation(Uniform id)
         "patternColor",
         "globalOpacity",
         "depth",
-        "pmvMatrix",
         "maskTexture",
         "fragmentColor",
         "linearData",
@@ -743,6 +750,7 @@ bool QGLEngineShaderManager::useCorrectShaderProg()
     }
     requiredProgram.useTextureCoords = texCoords;
     requiredProgram.useOpacityAttribute = (opacityMode == AttributeOpacity);
+    requiredProgram.usePmvMatrix = true;
 
     // 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 c52e5c0..3ab4ebe 100644
--- a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
@@ -253,6 +253,9 @@ struct QGLEngineCachedShaderProg
 static const GLuint QT_VERTEX_COORDS_ATTR  = 0;
 static const GLuint QT_TEXTURE_COORDS_ATTR = 1;
 static const GLuint QT_OPACITY_ATTR = 2;
+static const GLuint QT_PMV_MATRIX_1_ATTR = 3;
+static const GLuint QT_PMV_MATRIX_2_ATTR = 4;
+static const GLuint QT_PMV_MATRIX_3_ATTR = 5;
 
 class QGLEngineShaderProg;
 
@@ -397,6 +400,7 @@ public:
 
     bool                useTextureCoords;
     bool                useOpacityAttribute;
+    bool                usePmvMatrix;
 
     bool operator==(const QGLEngineShaderProg& other) {
         // We don't care about the program
@@ -431,7 +435,6 @@ public:
         PatternColor,
         GlobalOpacity,
         Depth,
-        PmvMatrix,
         MaskTexture,
         FragmentColor,
         LinearData,
diff --git a/src/opengl/gl2paintengineex/qglengineshadersource_p.h b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
index d9a61e9..ee04166 100644
--- a/src/opengl/gl2paintengineex/qglengineshadersource_p.h
+++ b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
@@ -63,210 +63,229 @@ QT_BEGIN_NAMESPACE
 QT_MODULE(OpenGL)
 
 
-static const char* const qglslMainVertexShader = "\
-    uniform   highp float   depth;\
-    void setPosition();\
-    void main(void)\
-    {\
-            setPosition();\
-            gl_Position.z = depth * gl_Position.w;\
-    }";
-
-static const char* const qglslMainWithTexCoordsVertexShader = "\
-    attribute highp  vec2 textureCoordArray; \
-    varying   highp  vec2 textureCoords; \
-    uniform   highp float   depth;\
-    void setPosition();\
-    void main(void) \
-    {\
-            setPosition();\
-            gl_Position.z = depth * gl_Position.w;\
-            textureCoords = textureCoordArray; \
-    }";
-
-static const char* const qglslMainWithTexCoordsAndOpacityVertexShader = "\
-    attribute highp vec2  textureCoordArray; \
-    attribute lowp  float opacityArray; \
-    varying   highp vec2  textureCoords; \
-    varying   lowp  float opacity; \
-    uniform   highp float depth; \
-    void setPosition(); \
-    void main(void) \
-    { \
-            setPosition(); \
-            gl_Position.z = depth * gl_Position.w; \
-            textureCoords = textureCoordArray; \
-            opacity = opacityArray; \
-    }";
+static const char* const qglslMainVertexShader = "\n\
+    void setPosition(); \n\
+    void main(void) \n\
+    { \n\
+        setPosition(); \n\
+    }\n";
+
+static const char* const qglslMainWithTexCoordsVertexShader = "\n\
+    attribute highp   vec2      textureCoordArray; \n\
+    varying   highp   vec2      textureCoords; \n\
+    void setPosition(); \n\
+    void main(void) \n\
+    { \n\
+        setPosition(); \n\
+        textureCoords = textureCoordArray; \n\
+    }\n";
+
+static const char* const qglslMainWithTexCoordsAndOpacityVertexShader = "\n\
+    attribute highp   vec2      textureCoordArray; \n\
+    attribute lowp    float     opacityArray; \n\
+    varying   highp   vec2      textureCoords; \n\
+    varying   lowp    float     opacity; \n\
+    void setPosition(); \n\
+    void main(void) \n\
+    { \n\
+        setPosition(); \n\
+        textureCoords = textureCoordArray; \n\
+        opacity = opacityArray; \n\
+    }\n";
 
 // NOTE: We let GL do the perspective correction so texture lookups in the fragment
 //       shader are also perspective corrected.
-static const char* const qglslPositionOnlyVertexShader = "\
-    attribute highp vec2    vertexCoordsArray;\
-    uniform   highp mat3    pmvMatrix;\
-    void setPosition(void)\
-    {\
-        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \
-        gl_Position = vec4(transformedPos.xy, 0.0, transformedPos.z); \
-    }";
-
-static const char* const qglslUntransformedPositionVertexShader = "\
-    attribute highp vec4    vertexCoordsArray;\
-    void setPosition(void)\
-    {\
-            gl_Position = vertexCoordsArray;\
-    }";
+static const char* const qglslPositionOnlyVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position = vec4(transformedPos.xy, 0.0, transformedPos.z); \n\
+    }\n";
+
+static const char* const qglslUntransformedPositionVertexShader = "\n\
+    attribute highp   vec4      vertexCoordsArray; \n\
+    void setPosition(void) \n\
+    { \n\
+        gl_Position = vertexCoordsArray; \n\
+    }\n";
 
 // Pattern Brush - This assumes the texture size is 8x8 and thus, the inverted size is 0.125
-static const char* const qglslPositionWithPatternBrushVertexShader = "\
-    attribute highp   vec2  vertexCoordsArray; \
-    uniform   highp   mat3  pmvMatrix; \
-    uniform   mediump vec2  halfViewportSize; \
-    uniform   highp   vec2  invertedTextureSize; \
-    uniform   highp   mat3  brushTransform; \
-    varying   highp   vec2  patternTexCoords; \
-    void setPosition(void) { \
-            vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \
-            gl_Position.xy = transformedPos.xy / transformedPos.z; \
-            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1.0); \
-            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-            gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \
-            patternTexCoords.xy = (hTexCoords.xy * 0.125) * invertedHTexCoordsZ; \
-    }";
+static const char* const qglslPositionWithPatternBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   vec2      invertedTextureSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   highp   vec2      patternTexCoords; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1.0); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        patternTexCoords.xy = (hTexCoords.xy * 0.125) * invertedHTexCoordsZ; \n\
+    }\n";
 
 static const char* const qglslAffinePositionWithPatternBrushVertexShader
                  = qglslPositionWithPatternBrushVertexShader;
 
-static const char* const qglslPatternBrushSrcFragmentShader = "\
-    uniform lowp    sampler2D brushTexture;\
-    uniform lowp    vec4      patternColor; \
-    varying highp   vec2      patternTexCoords;\
-    lowp vec4 srcPixel() { \
-        return patternColor * (1.0 - texture2D(brushTexture, patternTexCoords).r); \
+static const char* const qglslPatternBrushSrcFragmentShader = "\n\
+    uniform   lowp    sampler2D brushTexture; \n\
+    uniform   lowp    vec4      patternColor; \n\
+    varying   highp   vec2      patternTexCoords;\n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return patternColor * (1.0 - texture2D(brushTexture, patternTexCoords).r); \n\
     }\n";
 
 
 // Linear Gradient Brush
-static const char* const qglslPositionWithLinearGradientBrushVertexShader = "\
-    attribute highp   vec2  vertexCoordsArray; \
-    uniform   highp   mat3  pmvMatrix; \
-    uniform   mediump vec2  halfViewportSize; \
-    uniform   highp   vec3  linearData; \
-    uniform   highp   mat3  brushTransform; \
-    varying   mediump float index; \
-    void setPosition() { \
-        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \
-        gl_Position.xy = transformedPos.xy / transformedPos.z; \
-        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
-        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \
-        index = (dot(linearData.xy, hTexCoords.xy) * linearData.z) * invertedHTexCoordsZ; \
-    }";
+static const char* const qglslPositionWithLinearGradientBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   vec3      linearData; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   mediump float     index; \n\
+    void setPosition() \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        index = (dot(linearData.xy, hTexCoords.xy) * linearData.z) * invertedHTexCoordsZ; \n\
+    }\n";
 
 static const char* const qglslAffinePositionWithLinearGradientBrushVertexShader
                  = qglslPositionWithLinearGradientBrushVertexShader;
 
-static const char* const qglslLinearGradientBrushSrcFragmentShader = "\
-    uniform lowp    sampler2D   brushTexture; \
-    varying mediump float       index; \
-    lowp vec4 srcPixel() { \
-        mediump vec2 val = vec2(index, 0.5); \
-        return texture2D(brushTexture, val); \
+static const char* const qglslLinearGradientBrushSrcFragmentShader = "\n\
+    uniform   lowp    sampler2D brushTexture; \n\
+    varying   mediump float     index; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        mediump vec2 val = vec2(index, 0.5); \n\
+        return texture2D(brushTexture, val); \n\
     }\n";
 
 
 // Conical Gradient Brush
-static const char* const qglslPositionWithConicalGradientBrushVertexShader = "\
-    attribute highp   vec2  vertexCoordsArray;\
-    uniform   highp   mat3  pmvMatrix;\
-    uniform   mediump vec2  halfViewportSize; \
-    uniform   highp   mat3  brushTransform; \
-    varying   highp   vec2  A; \
-    void setPosition(void)\
-    {\
-        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \
-        gl_Position.xy = transformedPos.xy / transformedPos.z; \
-        mediump vec2  viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
-        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \
-        A = hTexCoords.xy * invertedHTexCoordsZ; \
-    }";
+static const char* const qglslPositionWithConicalGradientBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   highp   vec2      A; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2  viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        A = hTexCoords.xy * invertedHTexCoordsZ; \n\
+    }\n";
 
 static const char* const qglslAffinePositionWithConicalGradientBrushVertexShader
                  = qglslPositionWithConicalGradientBrushVertexShader;
 
 static const char* const qglslConicalGradientBrushSrcFragmentShader = "\n\
     #define INVERSE_2PI 0.1591549430918953358 \n\
-    uniform lowp    sampler2D   brushTexture; \n\
-    uniform mediump float       angle; \
-    varying highp   vec2        A; \
-    lowp vec4 srcPixel() { \
-        highp float t; \
-        if (abs(A.y) == abs(A.x)) \
-            t = (atan(-A.y + 0.002, A.x) + angle) * INVERSE_2PI; \
-        else \
-            t = (atan(-A.y, A.x) + angle) * INVERSE_2PI; \
-        return texture2D(brushTexture, vec2(t - floor(t), 0.5)); \
-    }";
+    uniform   lowp    sampler2D brushTexture; \n\
+    uniform   mediump float     angle; \n\
+    varying   highp   vec2      A; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        highp float t; \n\
+        if (abs(A.y) == abs(A.x)) \n\
+            t = (atan(-A.y + 0.002, A.x) + angle) * INVERSE_2PI; \n\
+        else \n\
+            t = (atan(-A.y, A.x) + angle) * INVERSE_2PI; \n\
+        return texture2D(brushTexture, vec2(t - floor(t), 0.5)); \n\
+    }\n";
 
 
 // Radial Gradient Brush
-static const char* const qglslPositionWithRadialGradientBrushVertexShader = "\
-    attribute highp   vec2 vertexCoordsArray;\
-    uniform   highp   mat3 pmvMatrix;\
-    uniform   mediump vec2 halfViewportSize; \
-    uniform   highp   mat3 brushTransform; \
-    uniform   highp   vec2 fmp; \
-    varying   highp   float b; \
-    varying   highp   vec2  A; \
-    void setPosition(void) \
-    {\
-        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \
-        gl_Position.xy = transformedPos.xy / transformedPos.z; \
-        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
-        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \
-        A = hTexCoords.xy * invertedHTexCoordsZ; \
-        b = 2.0 * dot(A, fmp); \
-    }";
+static const char* const qglslPositionWithRadialGradientBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray;\n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    uniform   highp   vec2      fmp; \n\
+    varying   highp   float     b; \n\
+    varying   highp   vec2      A; \n\
+    void setPosition(void) \n\
+    {\n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        A = hTexCoords.xy * invertedHTexCoordsZ; \n\
+        b = 2.0 * dot(A, fmp); \n\
+    }\n";
 
 static const char* const qglslAffinePositionWithRadialGradientBrushVertexShader
                  = qglslPositionWithRadialGradientBrushVertexShader;
 
-static const char* const qglslRadialGradientBrushSrcFragmentShader = "\
-    uniform lowp    sampler2D   brushTexture; \
-    uniform highp   float       fmp2_m_radius2; \
-    uniform highp   float       inverse_2_fmp2_m_radius2; \
-    varying highp   float       b; \
-    varying highp   vec2        A; \
-    lowp vec4 srcPixel() { \
-        highp float c = -dot(A, A); \
-        highp vec2 val = vec2((-b + sqrt(b*b - 4.0*fmp2_m_radius2*c)) * inverse_2_fmp2_m_radius2, 0.5); \
-        return texture2D(brushTexture, val); \
-    }";
+static const char* const qglslRadialGradientBrushSrcFragmentShader = "\n\
+    uniform   lowp    sampler2D brushTexture; \n\
+    uniform   highp   float     fmp2_m_radius2; \n\
+    uniform   highp   float     inverse_2_fmp2_m_radius2; \n\
+    varying   highp   float     b; \n\
+    varying   highp   vec2      A; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        highp float c = -dot(A, A); \n\
+        highp vec2 val = vec2((-b + sqrt(b*b - 4.0*fmp2_m_radius2*c)) * inverse_2_fmp2_m_radius2, 0.5); \n\
+        return texture2D(brushTexture, val); \n\
+    }\n";
 
 
 // Texture Brush
-static const char* const qglslPositionWithTextureBrushVertexShader = "\
-    attribute highp   vec2 vertexCoordsArray; \
-    uniform   highp   mat3  pmvMatrix; \
-    uniform   mediump vec2  halfViewportSize; \
-    uniform   highp   vec2  invertedTextureSize; \
-    uniform   highp   mat3  brushTransform; \
-    varying   highp   vec2  textureCoords; \
-    void setPosition(void) { \
-            vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \
-            gl_Position.xy = transformedPos.xy / transformedPos.z; \
-            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
-            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
-            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
-            gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \
-            textureCoords.xy = (hTexCoords.xy * invertedTextureSize) * gl_Position.w; \
-    }";
+static const char* const qglslPositionWithTextureBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   vec2      invertedTextureSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   highp   vec2      textureCoords; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        textureCoords.xy = (hTexCoords.xy * invertedTextureSize) * gl_Position.w; \n\
+    }\n";
 
 static const char* const qglslAffinePositionWithTextureBrushVertexShader
                  = qglslPositionWithTextureBrushVertexShader;
@@ -275,148 +294,165 @@ static const char* const qglslAffinePositionWithTextureBrushVertexShader
 // OpenGL ES does not support GL_REPEAT wrap modes for NPOT textures. So instead,
 // we emulate GL_REPEAT by only taking the fractional part of the texture coords.
 // TODO: Special case POT textures which don't need this emulation
-static const char* const qglslTextureBrushSrcFragmentShader = "\
-    varying highp   vec2      textureCoords; \
-    uniform lowp    sampler2D brushTexture; \
-    lowp vec4 srcPixel() { \
-        return texture2D(brushTexture, fract(textureCoords)); \
-    }";
+static const char* const qglslTextureBrushSrcFragmentShader = "\n\
+    varying highp   vec2      textureCoords; \n\
+    uniform lowp    sampler2D brushTexture; \n\
+    lowp vec4 srcPixel() { \n\
+        return texture2D(brushTexture, fract(textureCoords)); \n\
+    }\n";
 #else
-static const char* const qglslTextureBrushSrcFragmentShader = "\
-    varying highp   vec2      textureCoords; \
-    uniform lowp    sampler2D brushTexture; \
-    lowp vec4 srcPixel() { \
-        return texture2D(brushTexture, textureCoords); \
-    }";
+static const char* const qglslTextureBrushSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform   lowp    sampler2D brushTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return texture2D(brushTexture, textureCoords); \n\
+    }\n";
 #endif
 
-static const char* const qglslTextureBrushSrcWithPatternFragmentShader = "\
-    varying highp   vec2      textureCoords; \
-    uniform lowp    vec4      patternColor; \
-    uniform lowp    sampler2D brushTexture; \
-    lowp vec4 srcPixel() { \
-        return patternColor * (1.0 - texture2D(brushTexture, textureCoords).r); \
-    }";
+static const char* const qglslTextureBrushSrcWithPatternFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform   lowp    vec4      patternColor; \n\
+    uniform   lowp    sampler2D brushTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return patternColor * (1.0 - texture2D(brushTexture, textureCoords).r); \n\
+    }\n";
 
 // Solid Fill Brush
-static const char* const qglslSolidBrushSrcFragmentShader = "\
-    uniform lowp vec4 fragmentColor; \
-    lowp vec4 srcPixel() { \
-        return fragmentColor; \
-    }";
-
-static const char* const qglslImageSrcFragmentShader = "\
-    varying highp   vec2    textureCoords; \
-    uniform lowp  sampler2D imageTexture; \
-    lowp vec4 srcPixel() { \
-        return texture2D(imageTexture, textureCoords); \
-    }";
-
-static const char* const qglslCustomSrcFragmentShader = "\
-    varying highp vec2      textureCoords; \
-    uniform lowp  sampler2D imageTexture; \
-    lowp vec4 customShader(lowp sampler2D texture, highp vec2 coords); \
-    lowp vec4 srcPixel() { \
-        return customShader(imageTexture, textureCoords); \
-    }";
-
-static const char* const qglslImageSrcWithPatternFragmentShader = "\
-    varying highp vec2      textureCoords; \
-    uniform lowp  vec4      patternColor; \
-    uniform lowp  sampler2D imageTexture; \
-    lowp vec4 srcPixel() { \
-        return patternColor * (1.0 - texture2D(imageTexture, textureCoords).r); \
-    }\n";
-
-static const char* const qglslNonPremultipliedImageSrcFragmentShader = "\
-    varying highp vec2      textureCoords; \
-    uniform lowp  sampler2D imageTexture; \
-    lowp vec4 srcPixel() { \
-        lowp vec4 sample = texture2D(imageTexture, textureCoords); \
-        sample.rgb = sample.rgb * sample.a; \
-        return sample; \
-    }";
-
-static const char* const qglslShockingPinkSrcFragmentShader = "\
-    lowp vec4 srcPixel() { \
-        return vec4(0.98, 0.06, 0.75, 1.0); \
-    }";
-
-static const char* const qglslMainFragmentShader_ImageArrays = "\
-    varying lowp float opacity; \
-    lowp vec4 srcPixel(); \
-    void main() { \
-        gl_FragColor = srcPixel() * opacity; \
-    }";
-
-static const char* const qglslMainFragmentShader_CMO = "\
-    uniform lowp float globalOpacity; \
-    lowp vec4 srcPixel(); \
-    lowp vec4 applyMask(lowp vec4); \
-    lowp vec4 compose(lowp vec4); \
-    void main() { \
-        gl_FragColor = applyMask(compose(srcPixel()*globalOpacity))); \
-    }";
-
-static const char* const qglslMainFragmentShader_CM = "\
-    lowp vec4 srcPixel(); \
-    lowp vec4 applyMask(lowp vec4); \
-    lowp vec4 compose(lowp vec4); \
-    void main() { \
-        gl_FragColor = applyMask(compose(srcPixel())); \
-    }";
-
-static const char* const qglslMainFragmentShader_MO = "\
-    uniform lowp float globalOpacity; \
-    lowp vec4 srcPixel(); \
-    lowp vec4 applyMask(lowp vec4); \
-    void main() { \
-        gl_FragColor = applyMask(srcPixel()*globalOpacity); \
-    }";
-
-static const char* const qglslMainFragmentShader_M = "\
-    lowp vec4 srcPixel(); \
-    lowp vec4 applyMask(lowp vec4); \
-    void main() { \
-        gl_FragColor = applyMask(srcPixel()); \
-    }";
-
-static const char* const qglslMainFragmentShader_CO = "\
-    uniform lowp float globalOpacity; \
-    lowp vec4 srcPixel(); \
-    lowp vec4 compose(lowp vec4); \
-    void main() { \
-        gl_FragColor = compose(srcPixel()*globalOpacity); \
-    }";
-
-static const char* const qglslMainFragmentShader_C = "\
-    lowp vec4 srcPixel(); \
-    lowp vec4 compose(lowp vec4); \
-    void main() { \
-        gl_FragColor = compose(srcPixel()); \
-    }";
-
-static const char* const qglslMainFragmentShader_O = "\
-    uniform lowp float globalOpacity; \
-    lowp vec4 srcPixel(); \
-    void main() { \
-        gl_FragColor = srcPixel()*globalOpacity; \
-    }";
-
-static const char* const qglslMainFragmentShader = "\
-    lowp vec4 srcPixel(); \
-    void main() { \
-        gl_FragColor = srcPixel(); \
-    }";
-
-static const char* const qglslMaskFragmentShader = "\
-    varying highp   vec2      textureCoords;\
-    uniform lowp    sampler2D maskTexture;\
-    lowp vec4 applyMask(lowp vec4 src) \
-    {\
-        lowp vec4 mask = texture2D(maskTexture, textureCoords); \
-        return src * mask.a; \
-    }";
+static const char* const qglslSolidBrushSrcFragmentShader = "\n\
+    uniform   lowp    vec4      fragmentColor; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return fragmentColor; \n\
+    }\n";
+
+static const char* const qglslImageSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform   lowp    sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return texture2D(imageTexture, textureCoords); \n\
+    }\n";
+
+static const char* const qglslCustomSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform   lowp    sampler2D imageTexture; \n\
+    lowp vec4 customShader(lowp sampler2D texture, highp vec2 coords); \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return customShader(imageTexture, textureCoords); \n\
+    }\n";
+
+static const char* const qglslImageSrcWithPatternFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform   lowp    vec4      patternColor; \n\
+    uniform   lowp    sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return patternColor * (1.0 - texture2D(imageTexture, textureCoords).r); \n\
+    }\n";
+
+static const char* const qglslNonPremultipliedImageSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform   lowp    sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        lowp vec4 sample = texture2D(imageTexture, textureCoords); \n\
+        sample.rgb = sample.rgb * sample.a; \n\
+        return sample; \n\
+    }\n";
+
+static const char* const qglslShockingPinkSrcFragmentShader = "\n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return vec4(0.98, 0.06, 0.75, 1.0); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_ImageArrays = "\n\
+    varying   lowp    float     opacity; \n\
+    lowp vec4 srcPixel(); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = srcPixel() * opacity; \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_CMO = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(compose(srcPixel()*globalOpacity))); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_CM = "\n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(compose(srcPixel())); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_MO = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(srcPixel()*globalOpacity); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_M = "\n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(srcPixel()); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_CO = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = compose(srcPixel()*globalOpacity); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_C = "\n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = compose(srcPixel()); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_O = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = srcPixel()*globalOpacity; \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader = "\n\
+    lowp vec4 srcPixel(); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = srcPixel(); \n\
+    }\n";
+
+static const char* const qglslMaskFragmentShader = "\n\
+    varying   highp   vec2      textureCoords;\n\
+    uniform   lowp    sampler2D maskTexture;\n\
+    lowp vec4 applyMask(lowp vec4 src) \n\
+    {\n\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \n\
+        return src * mask.a; \n\
+    }\n";
 
 // For source over with subpixel antialiasing, the final color is calculated per component as follows
 // (.a is alpha component, .c is red, green or blue component):
@@ -433,23 +469,23 @@ static const char* const qglslMaskFragmentShader = "\
 // dest.c = dest.c * (1 - mask.c) + src.c * alpha
 //
 
-static const char* const qglslRgbMaskFragmentShaderPass1 = "\
-    varying highp   vec2      textureCoords;\
-    uniform lowp    sampler2D maskTexture;\
-    lowp vec4 applyMask(lowp vec4 src) \
-    {\
-        lowp vec4 mask = texture2D(maskTexture, textureCoords); \
-        return src.a * mask; \
-    }";
-
-static const char* const qglslRgbMaskFragmentShaderPass2 = "\
-    varying highp   vec2      textureCoords;\
-    uniform lowp    sampler2D maskTexture;\
-    lowp vec4 applyMask(lowp vec4 src) \
-    {\
-        lowp vec4 mask = texture2D(maskTexture, textureCoords); \
-        return src * mask; \
-    }";
+static const char* const qglslRgbMaskFragmentShaderPass1 = "\n\
+    varying   highp   vec2      textureCoords;\n\
+    uniform   lowp    sampler2D maskTexture;\n\
+    lowp vec4 applyMask(lowp vec4 src) \n\
+    { \n\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \n\
+        return src.a * mask; \n\
+    }\n";
+
+static const char* const qglslRgbMaskFragmentShaderPass2 = "\n\
+    varying   highp   vec2      textureCoords;\n\
+    uniform   lowp    sampler2D maskTexture;\n\
+    lowp vec4 applyMask(lowp vec4 src) \n\
+    { \n\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \n\
+        return src * mask; \n\
+    }\n";
 
 /*
     Left to implement:
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index 5e41cc1..24560d1 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -169,12 +169,6 @@ void QGL2PaintEngineExPrivate::useSimpleShader()
 
     if (matrixDirty)
         updateMatrix();
-
-    if (simpleShaderMatrixUniformDirty) {
-        const GLuint location = shaderManager->simpleProgram()->uniformLocation("pmvMatrix");
-        glUniformMatrix3fv(location, 1, GL_FALSE, (GLfloat*)pmvMatrix);
-        simpleShaderMatrixUniformDirty = false;
-    }
 }
 
 void QGL2PaintEngineExPrivate::updateBrushTexture()
@@ -393,9 +387,11 @@ void QGL2PaintEngineExPrivate::updateMatrix()
 
     matrixDirty = false;
 
-    // The actual data has been updated so both shader program's uniforms need updating
-    simpleShaderMatrixUniformDirty = true;
-    shaderMatrixUniformDirty = 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.
+    glVertexAttrib3fv(QT_PMV_MATRIX_1_ATTR, pmvMatrix[0]);
+    glVertexAttrib3fv(QT_PMV_MATRIX_2_ATTR, pmvMatrix[1]);
+    glVertexAttrib3fv(QT_PMV_MATRIX_3_ATTR, pmvMatrix[2]);
 
     dasher.setInvScale(inverseScale);
     stroker.setInvScale(inverseScale);
@@ -1033,18 +1029,12 @@ bool QGL2PaintEngineExPrivate::prepareForDraw(bool srcPixelsAreOpaque)
     if (changed) {
         // The shader program has changed so mark all uniforms as dirty:
         brushUniformsDirty = true;
-        shaderMatrixUniformDirty = true;
         opacityUniformDirty = true;
     }
 
     if (brushUniformsDirty && mode != ImageDrawingMode && mode != ImageArrayDrawingMode)
         updateBrushUniforms();
 
-    if (shaderMatrixUniformDirty) {
-        glUniformMatrix3fv(location(QGLEngineShaderManager::PmvMatrix), 1, GL_FALSE, (GLfloat*)pmvMatrix);
-        shaderMatrixUniformDirty = false;
-    }
-
     if (opacityMode == QGLEngineShaderManager::UniformOpacity && opacityUniformDirty) {
         shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::GlobalOpacity), (GLfloat)q->state()->opacity);
         opacityUniformDirty = false;
@@ -2060,11 +2050,8 @@ void QGL2PaintEngineEx::setState(QPainterState *new_state)
     if (old_state == s || old_state->renderHintsChanged)
         renderHintsChanged();
 
-    if (old_state == s || old_state->matrixChanged) {
+    if (old_state == s || old_state->matrixChanged)
         d->matrixDirty = true;
-        d->simpleShaderMatrixUniformDirty = true;
-        d->shaderMatrixUniformDirty = true;
-    }
 
     if (old_state == s || old_state->compositionModeChanged)
         d->compositionModeDirty = true;
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
index e3d0bfc..35c88f4 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
@@ -252,8 +252,6 @@ public:
     bool compositionModeDirty;
     bool brushTextureDirty;
     bool brushUniformsDirty;
-    bool simpleShaderMatrixUniformDirty;
-    bool shaderMatrixUniformDirty;
     bool opacityUniformDirty;
 
     bool stencilClean; // Has the stencil not been used for clipping so far?
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index b7139a2..bb76f1a 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -4494,6 +4494,13 @@ static void qt_gl_draw_text(QPainter *p, int x, int y, const QString &str,
    \note This function temporarily disables depth-testing when the
    text is drawn.
 
+   \note This function can only be used inside a
+   QPainter::beginNativePainting()/QPainter::endNativePainting() block
+   if the default OpenGL paint engine is QPaintEngine::OpenGL. To make
+   QPaintEngine::OpenGL the default GL engine, call
+   QGL::setPreferredPaintEngine(QPaintEngine::OpenGL) before the
+   QApplication constructor.
+
    \l{Overpainting Example}{Overpaint} with QPainter::drawText() instead.
 */
 
@@ -4513,8 +4520,17 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font,
     bool auto_swap = autoBufferSwap();
 
     QPaintEngine::Type oldEngineType = qgl_engine_selector()->preferredPaintEngine();
-    qgl_engine_selector()->setPreferredPaintEngine(QPaintEngine::OpenGL);
+
     QPaintEngine *engine = paintEngine();
+    if (engine && (oldEngineType == QPaintEngine::OpenGL2) && engine->isActive()) {
+        qWarning("QGLWidget::renderText(): Calling renderText() while a GL 2 paint engine is"
+                 " active on the same device is not allowed.");
+        return;
+    }
+
+    // this changes what paintEngine() returns
+    qgl_engine_selector()->setPreferredPaintEngine(QPaintEngine::OpenGL);
+    engine = paintEngine();
     QPainter *p;
     bool reuse_painter = false;
     if (engine->isActive()) {
@@ -4607,8 +4623,17 @@ void QGLWidget::renderText(double x, double y, double z, const QString &str, con
     win_y = height - win_y; // y is inverted
 
     QPaintEngine::Type oldEngineType = qgl_engine_selector()->preferredPaintEngine();
-    qgl_engine_selector()->setPreferredPaintEngine(QPaintEngine::OpenGL);
     QPaintEngine *engine = paintEngine();
+
+    if (engine && (oldEngineType == QPaintEngine::OpenGL2) && engine->isActive()) {
+        qWarning("QGLWidget::renderText(): Calling renderText() while a GL 2 paint engine is"
+                 " active on the same device is not allowed.");
+        return;
+    }
+
+    // this changes what paintEngine() returns
+    qgl_engine_selector()->setPreferredPaintEngine(QPaintEngine::OpenGL);
+    engine = paintEngine();
     QPainter *p;
     bool reuse_painter = false;
     bool use_depth_testing = glIsEnabled(GL_DEPTH_TEST);
diff --git a/src/opengl/qglshaderprogram.cpp b/src/opengl/qglshaderprogram.cpp
index 5e2f1f5..79484fa 100644
--- a/src/opengl/qglshaderprogram.cpp
+++ b/src/opengl/qglshaderprogram.cpp
@@ -106,6 +106,19 @@ QT_BEGIN_NAMESPACE
 
     \snippet doc/src/snippets/code/src_opengl_qglshaderprogram.cpp 2
 
+    \section1 Binary shaders and programs
+
+    Binary shaders may be specified using \c{glShaderBinary()} on
+    the return value from QGLShader::shaderId().  The QGLShader instance
+    containing the binary can then be added to the shader program with
+    addShader() and linked in the usual fashion with link().
+
+    Binary programs may be specified using \c{glProgramBinaryOES()}
+    on the return value from programId().  Then the application should
+    call link(), which will notice that the program has already been
+    specified and linked, allowing other operations to be performed
+    on the shader program.
+
     \sa QGLShader
 */
 
@@ -632,8 +645,6 @@ bool QGLShaderProgram::addShader(QGLShader *shader)
             qWarning("QGLShaderProgram::addShader: Program and shader are not associated with same context.");
             return false;
         }
-        if (!shader->d_func()->compiled)
-            return false;
         if (!shader->d_func()->shaderGuard.id())
             return false;
         glAttachShader(d->programGuard.id(), shader->d_func()->shaderGuard.id());
@@ -820,8 +831,20 @@ 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
+        // application added a program binary with glProgramBinaryOES(),
+        // or otherwise populated the shaders itself.  Check to see if the
+        // program is already linked and bail out if so.
+        value = 0;
+        glGetProgramiv(program, GL_LINK_STATUS, &value);
+        d->linked = (value != 0);
+        if (d->linked)
+            return true;
+    }
     glLinkProgram(program);
-    GLint value = 0;
+    value = 0;
     glGetProgramiv(program, GL_LINK_STATUS, &value);
     d->linked = (value != 0);
     value = 0;
@@ -928,6 +951,15 @@ void QGLShaderProgram::release()
 GLuint QGLShaderProgram::programId() const
 {
     Q_D(const QGLShaderProgram);
+    GLuint id = d->programGuard.id();
+    if (id)
+        return id;
+
+    // Create the identifier if we don't have one yet.  This is for
+    // applications that want to create the attached shader configuration
+    // themselves, particularly those using program binaries.
+    if (!const_cast<QGLShaderProgram *>(this)->init())
+        return 0;
     return d->programGuard.id();
 }
 
diff --git a/src/opengl/qpixmapdata_gl.cpp b/src/opengl/qpixmapdata_gl.cpp
index 6d47687..aa80664 100644
--- a/src/opengl/qpixmapdata_gl.cpp
+++ b/src/opengl/qpixmapdata_gl.cpp
@@ -252,10 +252,6 @@ QGLPixmapData::QGLPixmapData(PixelType type)
 {
     setSerialNumber(++qt_gl_pixmap_serial);
     m_glDevice.setPixmapData(this);
-
-    // Set InteralBindOptions minus the memory managed, since this
-    // QGLTexture is not managed as part of the internal texture cache
-    m_texture.options = QGLContext::PremultipliedAlphaBindOption;
 }
 
 QGLPixmapData::~QGLPixmapData()
@@ -344,18 +340,18 @@ void QGLPixmapData::ensureCreated() const
     }
 
     if (!m_source.isNull()) {
-        glBindTexture(target, m_texture.id);
         if (external_format == GL_RGB) {
-            const QImage tx = m_source.convertToFormat(QImage::Format_RGB888);
+            const QImage tx = m_source.convertToFormat(QImage::Format_RGB888).mirrored(false, true);
+
+            glBindTexture(target, m_texture.id);
             glTexSubImage2D(target, 0, 0, 0, w, h, external_format,
                             GL_UNSIGNED_BYTE, tx.bits());
         } else {
             const QImage tx = ctx->d_func()->convertToGLFormat(m_source, true, external_format);
+
+            glBindTexture(target, m_texture.id);
             glTexSubImage2D(target, 0, 0, 0, w, h, external_format,
                             GL_UNSIGNED_BYTE, tx.bits());
-            // convertToGLFormat will flip the Y axis, so it needs to
-            // be drawn upside down
-            m_texture.options |= QGLContext::InvertedYBindOption;
         }
 
         if (useFramebufferObjects())