5 files changed, 19 insertions, 14 deletions
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index ee49a3d..d3f6a29 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -1128,7 +1128,7 @@ void QGL2PaintEngineEx::fill(const QVectorPath &path, const QBrush &brush)
     d->fill(path);
 }
 
-extern bool qt_scaleForTransform(const QTransform &transform, qreal *scale); // qtransform.cpp
+extern Q_GUI_EXPORT bool qt_scaleForTransform(const QTransform &transform, qreal *scale); // qtransform.cpp
 
 
 void QGL2PaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index 2f16b99..0f171e4 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -1334,6 +1334,10 @@ QGLFormat::OpenGLVersionFlags Q_AUTOTEST_EXPORT qOpenGLVersionFlagsFromString(co
 
     \value OpenGL_Version_3_2  OpenGL version 3.2 or higher is present.
 
+    \value OpenGL_Version_3_3  OpenGL version 3.3 or higher is present.
+
+    \value OpenGL_Version_4_0  OpenGL version 4.0 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.
@@ -3725,7 +3729,7 @@ QGLWidget::~QGLWidget()
 #endif
     delete d->glcx;
     d->glcx = 0;
-#if defined(Q_WGL)
+#if defined(Q_WS_WIN)
     delete d->olcx;
     d->olcx = 0;
 #endif
@@ -5044,8 +5048,9 @@ void QGLWidget::deleteTexture(QMacCompatGLuint id)
 /*!
     \since 4.4
 
-    Calls the corresponding QGLContext::drawTexture() on
-    this widget's context.
+    Calls the corresponding QGLContext::drawTexture() with
+    \a target, \a textureId, and \a textureTarget for this
+    widget's context.
 */
 void QGLWidget::drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget)
 {
@@ -5065,8 +5070,9 @@ void QGLWidget::drawTexture(const QRectF &target, QMacCompatGLuint textureId, QM
 /*!
     \since 4.4
 
-    Calls the corresponding QGLContext::drawTexture() on
-    this widget's context.
+    Calls the corresponding QGLContext::drawTexture() with
+    \a point, \a textureId, and \a textureTarget for this
+    widget's context.
 */
 void QGLWidget::drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget)
 {
diff --git a/src/opengl/qglbuffer.cpp b/src/opengl/qglbuffer.cpp
index d6e0109..5f0aed4 100644
--- a/src/opengl/qglbuffer.cpp
+++ b/src/opengl/qglbuffer.cpp
@@ -416,7 +416,7 @@ void QGLBuffer::allocate(const void *data, int count)
 
     \sa release(), create()
 */
-bool QGLBuffer::bind() const
+bool QGLBuffer::bind()
 {
 #ifndef QT_NO_DEBUG
     if (!isCreated())
@@ -448,7 +448,7 @@ bool QGLBuffer::bind() const
 
     \sa bind()
 */
-void QGLBuffer::release() const
+void QGLBuffer::release()
 {
 #ifndef QT_NO_DEBUG
     if (!isCreated())
diff --git a/src/opengl/qglbuffer.h b/src/opengl/qglbuffer.h
index a1b45ff..9867f31 100644
--- a/src/opengl/qglbuffer.h
+++ b/src/opengl/qglbuffer.h
@@ -101,8 +101,8 @@ public:
 
     void destroy();
 
-    bool bind() const;
-    void release() const;
+    bool bind();
+    void release();
 
     static void release(QGLBuffer::Type type);
 
diff --git a/src/opengl/qwindowsurface_gl.cpp b/src/opengl/qwindowsurface_gl.cpp
index 6571a76..ef115bd 100644
--- a/src/opengl/qwindowsurface_gl.cpp
+++ b/src/opengl/qwindowsurface_gl.cpp
@@ -499,10 +499,9 @@ void QGLWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &
                 }
             }
 #endif
-            if (d_ptr->paintedRegion.boundingRect() != geometry()) {
-                // Emits warning if not supported. Should never happen unless
-                // setPartialUpdateSupport(true) has been called.
-                context()->d_func()->swapRegion(&d_ptr->paintedRegion);
+            if (d_ptr->paintedRegion.boundingRect() != geometry() && 
+                hasPartialUpdateSupport()) {
+                context()->d_func()->swapRegion(&d_ptr->paintedRegion);             
             } else
                 context()->swapBuffers();