Merge branch '4.8' of scm.dev.nokia.troll.no:qt/qt

Conflicts:
	doc/src/declarative/righttoleft.qdoc
	examples/draganddrop/fridgemagnets/main.cpp
	examples/script/context2d/main.cpp

7 files changed, 47 insertions, 19 deletions

diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index e62af62..3ac759c 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -1436,19 +1436,30 @@ void QGL2PaintEngineEx::drawStaticTextItem(QStaticTextItem *textItem)
 
     ensureActive();
 
-    QFontEngineGlyphCache::Type glyphType = textItem->fontEngine()->glyphFormat >= 0
-                                            ? QFontEngineGlyphCache::Type(textItem->fontEngine()->glyphFormat)
-                                            : d->glyphCacheType;
-    if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) {
-        if (d->device->alphaRequested() || state()->matrix.type() > QTransform::TxTranslate
-            || (state()->composition_mode != QPainter::CompositionMode_Source
-            && state()->composition_mode != QPainter::CompositionMode_SourceOver))
-        {
-            glyphType = QFontEngineGlyphCache::Raster_A8;
+    QPainterState *s = state();
+    float det = s->matrix.determinant();
+
+    // don't try to cache huge fonts or vastly transformed fonts
+    QFontEngine *fontEngine = textItem->fontEngine();
+    const qreal pixelSize = fontEngine->fontDef.pixelSize;
+    if (pixelSize * pixelSize * qAbs(det) < QT_MAX_CACHED_GLYPH_SIZE * QT_MAX_CACHED_GLYPH_SIZE ||
+        det < 0.25f || det > 4.f) {
+        QFontEngineGlyphCache::Type glyphType = fontEngine->glyphFormat >= 0
+                                                ? QFontEngineGlyphCache::Type(textItem->fontEngine()->glyphFormat)
+                                                : d->glyphCacheType;
+        if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) {
+            if (d->device->alphaRequested() || s->matrix.type() > QTransform::TxTranslate
+                || (s->composition_mode != QPainter::CompositionMode_Source
+                && s->composition_mode != QPainter::CompositionMode_SourceOver))
+            {
+                glyphType = QFontEngineGlyphCache::Raster_A8;
+            }
         }
-    }
 
-    d->drawCachedGlyphs(glyphType, textItem);
+        d->drawCachedGlyphs(glyphType, textItem);
+    } else {
+        QPaintEngineEx::drawStaticTextItem(textItem);
+    }
 }
 
 bool QGL2PaintEngineEx::drawTexture(const QRectF &dest, GLuint textureId, const QSize &size, const QRectF &src)
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
index 7ba92e4..2895d5a 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
@@ -158,6 +158,7 @@ public:
     void setRenderTextActive(bool);
 
     bool isNativePaintingActive() const;
+    bool supportsTransformations(qreal, const QTransform &) const { return true; }
 private:
     Q_DISABLE_COPY(QGL2PaintEngineEx)
 };
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index c33aec2..5f5864d 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -366,6 +366,10 @@ void QGL::setPreferredPaintEngine(QPaintEngine::Type engineType)
 
 static inline void transform_point(GLdouble out[4], const GLdouble m[16], const GLdouble in[4])
 {
+#if defined(Q_CC_GNU) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 406)
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Warray-bounds"
+#endif
 #define M(row,col)  m[col*4+row]
     out[0] =
         M(0, 0) * in[0] + M(0, 1) * in[1] + M(0, 2) * in[2] + M(0, 3) * in[3];
@@ -376,6 +380,9 @@ static inline void transform_point(GLdouble out[4], const GLdouble m[16], const
     out[3] =
         M(3, 0) * in[0] + M(3, 1) * in[1] + M(3, 2) * in[2] + M(3, 3) * in[3];
 #undef M
+#if defined(Q_CC_GNU) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 406)
+# pragma GCC diagnostic pop
+#endif
 }
 
 static inline GLint qgluProject(GLdouble objx, GLdouble objy, GLdouble objz,
diff --git a/src/opengl/qgl_qpa.cpp b/src/opengl/qgl_qpa.cpp
index bc36ced..9ba8b75 100644
--- a/src/opengl/qgl_qpa.cpp
+++ b/src/opengl/qgl_qpa.cpp
@@ -156,6 +156,8 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
             if (shareContext) {
                 winFormat.setSharedContext(shareContext->d_func()->platformContext);
             }
+            if (widget->testAttribute(Qt::WA_TranslucentBackground))
+                winFormat.setAlpha(true);
             winFormat.setWindowApi(QPlatformWindowFormat::OpenGL);
             winFormat.setWindowSurface(false);
             widget->setPlatformWindowFormat(winFormat);
diff --git a/src/opengl/qgl_symbian.cpp b/src/opengl/qgl_symbian.cpp
index 91904d0..86176c9 100644
--- a/src/opengl/qgl_symbian.cpp
+++ b/src/opengl/qgl_symbian.cpp
@@ -183,9 +183,7 @@ bool QGLContext::chooseContext(const QGLContext* shareContext) // almost same as
         d->ownsEglContext = true;
         d->eglContext->setApi(QEgl::OpenGL);
 
-        QGraphicsSystemEx *ex = QApplicationPrivate::graphicsSystem()->platformExtension();
-        QSymbianGraphicsSystemEx *symex = static_cast<QSymbianGraphicsSystemEx*>(ex);
-        if (symex && !symex->hasBCM2727()) {
+        if (!QSymbianGraphicsSystemEx::hasBCM2727()) {
             // Most likely we have hw support for multisampling
             // so let's enable it.
             d->glFormat.setSampleBuffers(1);
diff --git a/src/opengl/qpaintengine_opengl_p.h b/src/opengl/qpaintengine_opengl_p.h
index 5d5f5ce..8d0ea83 100644
--- a/src/opengl/qpaintengine_opengl_p.h
+++ b/src/opengl/qpaintengine_opengl_p.h
@@ -143,6 +143,7 @@ public:
     Qt::HANDLE handle() const;
 #endif
     inline Type type() const { return QPaintEngine::OpenGL; }
+    bool supportsTransformations(qreal, const QTransform &) const { return true; }
 
 private:
     void drawPolyInternal(const QPolygonF &pa, bool close = true);
diff --git a/src/opengl/qwindowsurface_gl.cpp b/src/opengl/qwindowsurface_gl.cpp
index 7f63aea..ff55142 100644
--- a/src/opengl/qwindowsurface_gl.cpp
+++ b/src/opengl/qwindowsurface_gl.cpp
@@ -542,19 +542,27 @@ void QGLWindowSurface::beginPaint(const QRegion &)
     d_ptr->did_paint = true;
     updateGeometry();
 
-    if (!context())
-        return;
-
     int clearFlags = 0;
 
-    if (context()->d_func()->workaround_needsFullClearOnEveryFrame)
+    QGLContext *ctx = reinterpret_cast<QGLContext *>(window()->d_func()->extraData()->glContext);
+
+    if (!ctx)
+        return;
+
+    if (ctx->d_func()->workaround_needsFullClearOnEveryFrame)
         clearFlags = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT;
-    else if (context()->format().alpha())
+    else if (ctx->format().alpha())
         clearFlags = GL_COLOR_BUFFER_BIT;
 
     if (clearFlags) {
+        if (d_ptr->fbo)
+            d_ptr->fbo->bind();
+
         glClearColor(0.0, 0.0, 0.0, 0.0);
         glClear(clearFlags);
+
+        if (d_ptr->fbo)
+            d_ptr->fbo->release();
     }
 }