17 files changed, 400 insertions, 325 deletions

diff --git a/src/corelib/kernel/qmath.cpp b/src/corelib/kernel/qmath.cpp
index e89c1e6..a3586a4 100644
--- a/src/corelib/kernel/qmath.cpp
+++ b/src/corelib/kernel/qmath.cpp
@@ -44,262 +44,262 @@
 QT_BEGIN_NAMESPACE
 
 const qreal qt_sine_table[QT_SINE_TABLE_SIZE] = {
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-	0.049067674327418015,
-	0.073564563599667426,
-	0.098017140329560604,
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-	0.29028467725446233,
-	0.31368174039889152,
-	0.33688985339222005,
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-	0.38268343236508978,
-	0.40524131400498986,
-	0.42755509343028208,
-	0.44961132965460654,
-	0.47139673682599764,
-	0.49289819222978404,
-	0.51410274419322166,
-	0.53499761988709715,
-	0.55557023301960218,
-	0.57580819141784534,
-	0.59569930449243336,
-	0.61523159058062682,
-	0.63439328416364549,
-	0.65317284295377676,
-	0.67155895484701833,
-	0.68954054473706683,
-	0.70710678118654746,
-	0.72424708295146689,
-	0.74095112535495911,
-	0.75720884650648446,
-	0.77301045336273699,
-	0.78834642762660623,
-	0.80320753148064483,
-	0.81758481315158371,
-	0.83146961230254524,
-	0.84485356524970701,
-    0.85772861000027212,
-	0.87008699110871135,
-	0.88192126434835494,
-	0.89322430119551532,
-	0.90398929312344334,
-	0.91420975570353069,
-	0.92387953251128674,
-	0.93299279883473885,
-	0.94154406518302081,
-	0.94952818059303667,
-	0.95694033573220894,
-	0.96377606579543984,
-	0.97003125319454397,
-	0.97570213003852857,
-	0.98078528040323043,
-	0.98527764238894122,
-	0.98917650996478101,
-	0.99247953459870997,
-	0.99518472667219682,
-	0.99729045667869021,
-	0.99879545620517241,
-	0.99969881869620425,
-	1.0,
-	0.99969881869620425,
-	0.99879545620517241,
-	0.99729045667869021,
-	0.99518472667219693,
-	0.99247953459870997,
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+    qreal(-0.12241067519921603),
+    qreal(-0.098017140329560506),
+    qreal(-0.073564563599667412),
+    qreal(-0.049067674327418091),
+    qreal(-0.024541228522912448)
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/dialogs/qfiledialog.cpp b/src/gui/dialogs/qfiledialog.cpp
index c70650d..3d59463 100644
--- a/src/gui/dialogs/qfiledialog.cpp
+++ b/src/gui/dialogs/qfiledialog.cpp
@@ -3245,6 +3245,10 @@ QString QFSCompleter::pathFromIndex(const QModelIndex &index) const
     QString currentLocation = dirModel->rootPath();
     QString path = index.data(QFileSystemModel::FilePathRole).toString();
     if (!currentLocation.isEmpty() && path.startsWith(currentLocation)) {
+#if defined(Q_OS_UNIX) || defined(Q_OS_WINCE)
+        if (currentLocation == QDir::separator())
+            return path.mid(currentLocation.length());
+#endif
         return path.mid(currentLocation.length() + 1);
     }
     return index.data(QFileSystemModel::FilePathRole).toString();
@@ -3300,6 +3304,10 @@ QStringList QFSCompleter::splitPath(const QString &path) const
         else
             dirModel = sourceModel;
         QString currentLocation = QDir::toNativeSeparators(dirModel->rootPath());
+#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
+        if (currentLocation.endsWith(QLatin1Char(':')))
+            currentLocation.append(sep);
+#endif
         if (currentLocation.contains(sep) && path != currentLocation) {
             QStringList currentLocationList = splitPath(currentLocation);
             while (!currentLocationList.isEmpty()
diff --git a/src/gui/itemviews/qabstractitemview.cpp b/src/gui/itemviews/qabstractitemview.cpp
index 2a1fba5..cbd9a8a 100644
--- a/src/gui/itemviews/qabstractitemview.cpp
+++ b/src/gui/itemviews/qabstractitemview.cpp
@@ -146,9 +146,16 @@ void QAbstractItemViewPrivate::setHoverIndex(const QPersistentModelIndex &index)
     if (hover == index)
         return;
 
-    q->update(hover); //update the old one
+    if (selectionBehavior != QAbstractItemView::SelectRows) {
+        q->update(hover); //update the old one
+        q->update(index); //update the new one
+    } else {
+        QRect oldHoverRect = q->visualRect(hover);
+        QRect newHoverRect = q->visualRect(index);
+        viewport->update(QRect(0, newHoverRect.y(), viewport->width(), newHoverRect.height()));
+        viewport->update(QRect(0, oldHoverRect.y(), viewport->width(), oldHoverRect.height()));
+    }
     hover = index;
-    q->update(hover); //update the new one
 }
 
 void QAbstractItemViewPrivate::checkMouseMove(const QPersistentModelIndex &index)
diff --git a/src/gui/itemviews/qtreeview.cpp b/src/gui/itemviews/qtreeview.cpp
index efb8422..d0fa22d 100644
--- a/src/gui/itemviews/qtreeview.cpp
+++ b/src/gui/itemviews/qtreeview.cpp
@@ -1241,15 +1241,6 @@ bool QTreeView::viewportEvent(QEvent *event)
                 viewport()->update(newRect);
             }
         }
-        if (selectionBehavior() == QAbstractItemView::SelectRows) {
-            QModelIndex newHoverIndex = indexAt(he->pos());
-            if (d->hover != newHoverIndex) {
-                QRect oldHoverRect = visualRect(d->hover);
-                QRect newHoverRect = visualRect(newHoverIndex);
-                viewport()->update(QRect(0, newHoverRect.y(), viewport()->width(), newHoverRect.height()));
-                viewport()->update(QRect(0, oldHoverRect.y(), viewport()->width(), oldHoverRect.height()));
-            }
-        }
         break; }
     default:
         break;
@@ -2644,10 +2635,13 @@ void QTreeView::selectAll()
         return;
     SelectionMode mode = d->selectionMode;
     d->executePostedLayout(); //make sure we lay out the items
-    if (mode != SingleSelection && !d->viewItems.isEmpty())
-        d->select(d->viewItems.first().index, d->viewItems.last().index,
+    if (mode != SingleSelection && !d->viewItems.isEmpty()) {
+        const QModelIndex &idx = d->viewItems.last().index;
+        QModelIndex lastItemIndex = idx.sibling(idx.row(), d->model->columnCount(idx.parent()) - 1);
+        d->select(d->viewItems.first().index, lastItemIndex,
                   QItemSelectionModel::ClearAndSelect
                   |QItemSelectionModel::Rows);
+    }
 }
 
 /*!
diff --git a/src/gui/painting/qoutlinemapper.cpp b/src/gui/painting/qoutlinemapper.cpp
index 51b3691..ad0c2eb 100644
--- a/src/gui/painting/qoutlinemapper.cpp
+++ b/src/gui/painting/qoutlinemapper.cpp
@@ -225,9 +225,10 @@ void QOutlineMapper::endOutline()
     controlPointRect = boundingRect(elements, element_count);
 
 #ifdef QT_DEBUG_CONVERT
-    printf(" - control point rect (%.2f, %.2f) %.2f x %.2f\n",
+    printf(" - control point rect (%.2f, %.2f) %.2f x %.2f, clip=(%d,%d, %dx%d)\n",
            controlPointRect.x(), controlPointRect.y(),
-           controlPointRect.width(), controlPointRect.height());
+           controlPointRect.width(), controlPointRect.height(),
+           m_clip_rect.x(), m_clip_rect.y(), m_clip_rect.width(), m_clip_rect.height());
 #endif
 
 
@@ -235,7 +236,9 @@ void QOutlineMapper::endOutline()
     const bool do_clip = (controlPointRect.left() < -QT_RASTER_COORD_LIMIT
                           || controlPointRect.right() > QT_RASTER_COORD_LIMIT
                           || controlPointRect.top() < -QT_RASTER_COORD_LIMIT
-                          || controlPointRect.bottom() > QT_RASTER_COORD_LIMIT);
+                          || controlPointRect.bottom() > QT_RASTER_COORD_LIMIT
+                          || controlPointRect.width() > QT_RASTER_COORD_LIMIT
+                          || controlPointRect.height() > QT_RASTER_COORD_LIMIT);
 
     if (do_clip) {
         clipElements(elements, elementTypes(), element_count);
diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp
index 0e7adf3..3f2322e 100644
--- a/src/gui/painting/qpaintengine_raster.cpp
+++ b/src/gui/painting/qpaintengine_raster.cpp
@@ -475,8 +475,10 @@ bool QRasterPaintEngine::begin(QPaintDevice *device)
     QRasterPaintEngineState *s = state();
     ensureOutlineMapper();
     d->outlineMapper->m_clip_rect = d->deviceRect.adjusted(-10, -10, 10, 10);
+
+    // This is the upp
     QRect bounds(-QT_RASTER_COORD_LIMIT, -QT_RASTER_COORD_LIMIT,
-                 2*QT_RASTER_COORD_LIMIT, 2*QT_RASTER_COORD_LIMIT);
+                 QT_RASTER_COORD_LIMIT*2 - 1, QT_RASTER_COORD_LIMIT * 2 - 1);
     d->outlineMapper->m_clip_rect = bounds.intersected(d->outlineMapper->m_clip_rect);
 
 
diff --git a/src/gui/painting/qpaintengineex.cpp b/src/gui/painting/qpaintengineex.cpp
index 3c07451..058f226 100644
--- a/src/gui/painting/qpaintengineex.cpp
+++ b/src/gui/painting/qpaintengineex.cpp
@@ -860,7 +860,7 @@ void QPaintEngineEx::drawPoints(const QPointF *points, int pointCount)
             for (int i=0; i<count; ++i) {
                 pts[++oset] = points[i].x();
                 pts[++oset] = points[i].y();
-                pts[++oset] = points[i].x() + 0.001;
+                pts[++oset] = points[i].x() + 1/63.;
                 pts[++oset] = points[i].y();
             }
             QVectorPath path(pts, count * 2, qpaintengineex_line_types_16, QVectorPath::LinesHint);
@@ -870,7 +870,7 @@ void QPaintEngineEx::drawPoints(const QPointF *points, int pointCount)
         }
     } else {
         for (int i=0; i<pointCount; ++i) {
-            qreal pts[] = { points[i].x(), points[i].y(), points[i].x() + 0.001, points[i].y() };
+            qreal pts[] = { points[i].x(), points[i].y(), points[i].x() + 1/63., points[i].y() };
             QVectorPath path(pts, 2, 0);
             stroke(path, pen);
         }
@@ -891,7 +891,7 @@ void QPaintEngineEx::drawPoints(const QPoint *points, int pointCount)
             for (int i=0; i<count; ++i) {
                 pts[++oset] = points[i].x();
                 pts[++oset] = points[i].y();
-                pts[++oset] = points[i].x() + 0.001;
+                pts[++oset] = points[i].x() + 1/63;
                 pts[++oset] = points[i].y();
             }
             QVectorPath path(pts, count * 2, qpaintengineex_line_types_16, QVectorPath::LinesHint);
@@ -901,7 +901,7 @@ void QPaintEngineEx::drawPoints(const QPoint *points, int pointCount)
         }
     } else {
         for (int i=0; i<pointCount; ++i) {
-            qreal pts[] = { points[i].x(), points[i].y(), points[i].x() + 0.001, points[i].y() };
+            qreal pts[] = { points[i].x(), points[i].y(), points[i].x() +1/63., points[i].y() };
             QVectorPath path(pts, 2, 0);
             stroke(path, pen);
         }
diff --git a/src/gui/painting/qpainterpath_p.h b/src/gui/painting/qpainterpath_p.h
index be01549..43f548f 100644
--- a/src/gui/painting/qpainterpath_p.h
+++ b/src/gui/painting/qpainterpath_p.h
@@ -97,6 +97,7 @@ public:
               flags(0)
         {
             int ptsPos = 0;
+            bool isLines = true;
             for (int i=0; i<path.size(); ++i) {
                 const QPainterPath::Element &e = path.at(i);
                 elements[i] = e.type;
@@ -104,6 +105,11 @@ public:
                 points[ptsPos++] = e.y;
                 if (e.type == QPainterPath::CurveToElement)
                     flags |= QVectorPath::CurvedShapeMask;
+
+                // This is to check if the path contains only alternating lineTo/moveTo,
+                // in which case we can set the LinesHint in the path. MoveTo is 0 and
+                // LineTo is 1 so the i%2 gets us what we want cheaply.
+                isLines = isLines && e.type == (QPainterPath::ElementType) (i%2);
             }
 
             if (fillRule == Qt::WindingFill)
@@ -111,8 +117,14 @@ public:
             else
                 flags |= QVectorPath::OddEvenFill;
 
-            if (!convex)
-                flags |= QVectorPath::NonConvexShapeMask;
+            if (isLines)
+                flags |= QVectorPath::LinesShapeMask;
+            else {
+                flags |= QVectorPath::AreaShapeMask;
+                if (!convex)
+                    flags |= QVectorPath::NonConvexShapeMask;
+            }
+
         }
         QVarLengthArray<QPainterPath::ElementType> elements;
         QVarLengthArray<qreal> points;
diff --git a/src/gui/styles/qcleanlooksstyle.cpp b/src/gui/styles/qcleanlooksstyle.cpp
index 49dd47d..0f39b23 100644
--- a/src/gui/styles/qcleanlooksstyle.cpp
+++ b/src/gui/styles/qcleanlooksstyle.cpp
@@ -2069,7 +2069,7 @@ void QCleanlooksStyle::drawControl(ControlElement element, const QStyleOption *o
                 // This is mainly to handle cases where someone sets the font on the window
                 // and then the combo inherits it and passes it onward. At that point the resolve mask
                 // is very, very weak. This makes it stonger.
-                font.setPointSizeF(menuItem->font.pointSizeF());
+                font.setPointSizeF(QFontInfo(menuItem->font).pointSizeF());
 
                 if (menuitem->menuItemType == QStyleOptionMenuItem::DefaultItem)
                     font.setBold(true);
diff --git a/src/gui/styles/qmacstyle_mac.mm b/src/gui/styles/qmacstyle_mac.mm
index ecb7453..97d69b2 100644
--- a/src/gui/styles/qmacstyle_mac.mm
+++ b/src/gui/styles/qmacstyle_mac.mm
@@ -3996,7 +3996,7 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
                 // This is mainly to handle cases where someone sets the font on the window
                 // and then the combo inherits it and passes it onward. At that point the resolve mask
                 // is very, very weak. This makes it stonger.
-                myFont.setPointSizeF(mi->font.pointSizeF());
+                myFont.setPointSizeF(QFontInfo(mi->font).pointSizeF());
                 p->setFont(myFont);
                 p->drawText(xpos, yPos, contentRect.width() - xm - tabwidth + 1,
                             contentRect.height(), text_flags ^ Qt::AlignRight, s);
diff --git a/src/gui/text/qfont.cpp b/src/gui/text/qfont.cpp
index d147ad7..4c57dff 100644
--- a/src/gui/text/qfont.cpp
+++ b/src/gui/text/qfont.cpp
@@ -1780,7 +1780,7 @@ Q_GLOBAL_STATIC(QFontSubst, globalFontSubst)
 static void initFontSubst()
 {
     // default substitutions
-    static const char *initTbl[] = {
+    static const char * const initTbl[] = {
 
 #if defined(Q_WS_X11)
         "arial",        "helvetica",
@@ -1812,7 +1812,6 @@ static void initFontSubst()
     }
 }
 
-
 /*!
     Returns the first family name to be used whenever \a familyName is
     specified. The lookup is case insensitive.
diff --git a/src/gui/widgets/qspinbox.cpp b/src/gui/widgets/qspinbox.cpp
index f00296c..726426d 100644
--- a/src/gui/widgets/qspinbox.cpp
+++ b/src/gui/widgets/qspinbox.cpp
@@ -99,6 +99,10 @@ public:
         Q_Q(QDoubleSpinBox);
         q->setInputMethodHints(Qt::ImhFormattedNumbersOnly);
     }
+
+    // When fiddling with the decimals property, we may lose precision in these properties.
+    double actualMin;
+    double actualMax;
 };
 
 
@@ -762,6 +766,7 @@ double QDoubleSpinBox::minimum() const
 void QDoubleSpinBox::setMinimum(double minimum)
 {
     Q_D(QDoubleSpinBox);
+    d->actualMin = minimum;
     const QVariant m(d->round(minimum));
     d->setRange(m, (d->variantCompare(d->maximum, m) > 0 ? d->maximum : m));
 }
@@ -792,6 +797,7 @@ double QDoubleSpinBox::maximum() const
 void QDoubleSpinBox::setMaximum(double maximum)
 {
     Q_D(QDoubleSpinBox);
+    d->actualMax = maximum;
     const QVariant m(d->round(maximum));
     d->setRange((d->variantCompare(d->minimum, m) < 0 ? d->minimum : m), m);
 }
@@ -813,6 +819,8 @@ void QDoubleSpinBox::setMaximum(double maximum)
 void QDoubleSpinBox::setRange(double minimum, double maximum)
 {
     Q_D(QDoubleSpinBox);
+    d->actualMin = minimum;
+    d->actualMax = maximum;
     d->setRange(QVariant(d->round(minimum)), QVariant(d->round(maximum)));
 }
 
@@ -843,7 +851,7 @@ void QDoubleSpinBox::setDecimals(int decimals)
     Q_D(QDoubleSpinBox);
     d->decimals = qBound(0, decimals, DBL_MAX_10_EXP + DBL_DIG);
 
-    setRange(minimum(), maximum()); // make sure values are rounded
+    setRange(d->actualMin, d->actualMax); // make sure values are rounded
     setValue(value());
 }
 
@@ -1051,8 +1059,10 @@ QVariant QSpinBoxPrivate::validateAndInterpret(QString &input, int &pos,
 
 QDoubleSpinBoxPrivate::QDoubleSpinBoxPrivate()
 {
-    minimum = QVariant(0.0);
-    maximum = QVariant(99.99);
+    actualMin = 0.0;
+    actualMax = 99.99;
+    minimum = QVariant(actualMin);
+    maximum = QVariant(actualMax);
     value = minimum;
     singleStep = QVariant(1.0);
     decimals = 2;
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index 6b65886..2a33255 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -580,19 +580,19 @@ void QGL2PaintEngineExPrivate::transferMode(EngineMode newMode)
     }
 
     if (newMode == TextDrawingMode) {
-        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray.data());
-        glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray.data());
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinateArray.data());
+        setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinateArray.data());
     }
 
     if (newMode == ImageDrawingMode) {
-        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, staticVertexCoordinateArray);
-        glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, staticTextureCoordinateArray);
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, staticVertexCoordinateArray);
+        setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, staticTextureCoordinateArray);
     }
 
     if (newMode == ImageArrayDrawingMode) {
-        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray.data());
-        glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray.data());
-        glVertexAttribPointer(QT_OPACITY_ATTR, 1, GL_FLOAT, GL_FALSE, 0, opacityArray.data());
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinateArray.data());
+        setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinateArray.data());
+        setVertexAttributePointer(QT_OPACITY_ATTR, (GLfloat*)opacityArray.data());
     }
 
     // This needs to change when we implement high-quality anti-aliasing...
@@ -707,9 +707,9 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
             prepareForDraw(currentBrush.isOpaque());
 #ifdef QT_OPENGL_CACHE_AS_VBOS
             glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
-            glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, false, 0, 0);
+            setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, 0);
 #else
-            glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, false, 0, cache->vertices);
+            setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, cache->vertices);
 #endif
             glDrawArrays(cache->primitiveType, 0, cache->vertexCount);
 
@@ -829,7 +829,7 @@ void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(const float *data,
         glStencilMask(GL_STENCIL_HIGH_BIT);
 #if 0
         glStencilOp(GL_KEEP, GL_KEEP, GL_INVERT); // Simply invert the stencil bit
-        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, data);
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, data);
         glDrawArrays(GL_TRIANGLE_STRIP, 0, count);
 #else
 
@@ -840,7 +840,7 @@ void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(const float *data,
         } else {
             glStencilFunc(GL_ALWAYS, GL_STENCIL_HIGH_BIT, 0xff);
         }
-        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, data);
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, data);
         glDrawArrays(GL_TRIANGLE_STRIP, 0, count);
 #endif
     }
@@ -954,15 +954,8 @@ bool QGL2PaintEngineExPrivate::prepareForDraw(bool srcPixelsAreOpaque)
 
 void QGL2PaintEngineExPrivate::composite(const QGLRect& boundingRect)
 {
-    // Setup a vertex array for the bounding rect:
-    GLfloat rectVerts[] = {
-        boundingRect.left, boundingRect.top,
-        boundingRect.left, boundingRect.bottom,
-        boundingRect.right, boundingRect.bottom,
-        boundingRect.right, boundingRect.top
-    };
-
-    glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, rectVerts);
+    setCoords(staticVertexCoordinateArray, boundingRect);
+    setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, staticVertexCoordinateArray);
     glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
 }
 
@@ -971,7 +964,7 @@ void QGL2PaintEngineExPrivate::drawVertexArrays(const float *data, int *stops, i
                                                 GLenum primitive)
 {
     // Now setup the pointer to the vertex array:
-    glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, data);
+    setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)data);
 
     int previousStop = 0;
     for (int i=0; i<stopCount; ++i) {
@@ -1070,7 +1063,7 @@ void QGL2PaintEngineExPrivate::stroke(const QVectorPath &path, const QPen &pen)
 
     if (opaque) {
         prepareForDraw(opaque);
-        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, false, 0, stroker.vertices());
+        setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, stroker.vertices());
         glDrawArrays(GL_TRIANGLE_STRIP, 0, stroker.vertexCount() / 2);
 
 //         QBrush b(Qt::green);
@@ -1291,9 +1284,6 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly
     GLfloat dx = 1.0 / cache->width();
     GLfloat dy = 1.0 / cache->height();
 
-    QGLPoint *oldVertexCoordinateDataPtr = vertexCoordinateArray.data();
-    QGLPoint *oldTextureCoordinateDataPtr = textureCoordinateArray.data();
-
     vertexCoordinateArray.clear();
     textureCoordinateArray.clear();
 
@@ -1306,10 +1296,8 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(const QPointF &p, QFontEngineGly
         textureCoordinateArray.addRect(QRectF(c.x*dx, c.y*dy, c.w * dx, c.h * dy));
     }
 
-    if (vertexCoordinateArray.data() != oldVertexCoordinateDataPtr)
-        glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray.data());
-    if (textureCoordinateArray.data() != oldTextureCoordinateDataPtr)
-        glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray.data());
+    setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat*)vertexCoordinateArray.data());
+    setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat*)textureCoordinateArray.data());
 
     if (addOffset) {
         addOffset = false;
@@ -1641,6 +1629,8 @@ void QGL2PaintEngineEx::ensureActive()
         d->shaderManager->setDirty();
         d->ctx->d_func()->syncGlState();
         setState(state());
+        for (int i = 0; i < 3; ++i)
+            d->vertexAttribPointers[i] = (GLfloat*)-1; // Assume the pointers are clobbered
     }
 }
 
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
index 37bae6f..ce1b538 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
@@ -196,6 +196,9 @@ public:
     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);
 
+    // Calls glVertexAttributePointer if the pointer has changed
+    inline void setVertexAttributePointer(unsigned int arrayIndex, const GLfloat *pointer);
+
     // draws whatever is in the vertex array:
     void drawVertexArrays(const float *data, int *stops, int stopCount, GLenum primitive);
     void drawVertexArrays(QGL2PEXVertexArray &vertexArray, GLenum primitive) {
@@ -230,6 +233,7 @@ public:
     void regenerateClip();
     void systemStateChanged();
 
+
     static QGLEngineShaderManager* shaderManagerForEngine(QGL2PaintEngineEx *engine) { return engine->d_func()->shaderManager; }
     static QGL2PaintEngineExPrivate *getData(QGL2PaintEngineEx *engine) { return engine->d_func(); }
     static void cleanupVectorPath(QPaintEngineEx *engine, void *data);
@@ -291,8 +295,24 @@ public:
 
     QSet<QVectorPath::CacheEntry *> pathCaches;
     QVector<GLuint> unusedVBOSToClean;
+
+    const GLfloat *vertexAttribPointers[3];
 };
 
+
+void QGL2PaintEngineExPrivate::setVertexAttributePointer(unsigned int arrayIndex, const GLfloat *pointer)
+{
+    Q_ASSERT(arrayIndex < 3);
+    if (pointer == vertexAttribPointers[arrayIndex])
+        return;
+
+    vertexAttribPointers[arrayIndex] = pointer;
+    if (arrayIndex == QT_OPACITY_ATTR)
+        glVertexAttribPointer(arrayIndex, 1, GL_FLOAT, GL_FALSE, 0, pointer);
+    else
+        glVertexAttribPointer(arrayIndex, 2, GL_FLOAT, GL_FALSE, 0, pointer);
+}
+
 QT_END_NAMESPACE
 
 #endif
diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
index 047876f..0720170 100644
--- a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
+++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
@@ -81,7 +81,7 @@ void QGLTextureGlyphCache::createTextureData(int width, int height)
         data[i] = 0;
 
     if (m_type == QFontEngineGlyphCache::Raster_RGBMask)
-        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]);
     else
         glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]);
 
@@ -127,11 +127,28 @@ void QGLTextureGlyphCache::resizeTextureData(int width, int height)
 
     glViewport(0, 0, oldWidth, oldHeight);
 
-    float vertexCoordinateArray[] = { -1, -1, 1, -1, 1, 1, -1, 1 };
-    float textureCoordinateArray[] = { 0, 0, 1, 0, 1, 1, 0, 1 };
-
-    glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray);
-    glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray);
+    GLfloat* vertexCoordinateArray = pex->staticVertexCoordinateArray;
+    vertexCoordinateArray[0] = -1.0f;
+    vertexCoordinateArray[1] = -1.0f;
+    vertexCoordinateArray[2] =  1.0f;
+    vertexCoordinateArray[3] = -1.0f;
+    vertexCoordinateArray[4] =  1.0f;
+    vertexCoordinateArray[5] =  1.0f;
+    vertexCoordinateArray[6] = -1.0f;
+    vertexCoordinateArray[7] =  1.0f;
+
+    GLfloat* textureCoordinateArray = pex->staticTextureCoordinateArray;
+    textureCoordinateArray[0] = 0.0f;
+    textureCoordinateArray[1] = 0.0f;
+    textureCoordinateArray[2] = 1.0f;
+    textureCoordinateArray[3] = 0.0f;
+    textureCoordinateArray[4] = 1.0f;
+    textureCoordinateArray[5] = 1.0f;
+    textureCoordinateArray[6] = 0.0f;
+    textureCoordinateArray[7] = 1.0f;
+
+    pex->setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, vertexCoordinateArray);
+    pex->setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, textureCoordinateArray);
 
     pex->shaderManager->useBlitProgram();
     pex->shaderManager->blitProgram()->setUniformValue("imageTexture", QT_IMAGE_TEXTURE_UNIT);
@@ -179,8 +196,20 @@ void QGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph)
             for (int x = 0; x < maskWidth; ++x)
                 src[x] = -src[x]; // convert 0 and 1 into 0 and 255
         }
-     }
-
+    } else if (mask.format() == QImage::Format_RGB32) {
+        // Make the alpha component equal to the average of the RGB values.
+        // This is needed when drawing sub-pixel antialiased text on translucent targets.
+        for (int y = 0; y < maskHeight; ++y) {
+            quint32 *src = (quint32 *) mask.scanLine(y);
+            for (int x = 0; x < maskWidth; ++x) {
+                uchar r = src[x] >> 16;
+                uchar g = src[x] >> 8;
+                uchar b = src[x];
+                quint32 avg = (quint32(r) + quint32(g) + quint32(b) + 1) / 3; // "+1" for rounding.
+                src[x] = (src[x] & 0x00ffffff) | (avg << 24);
+            }
+        }
+    }
 
     glBindTexture(GL_TEXTURE_2D, m_texture);
     if (mask.format() == QImage::Format_RGB32) {
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index 547b33e..a262ded 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -1555,7 +1555,7 @@ QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_format, bool include
 
 QImage qt_gl_read_texture(const QSize &size, bool alpha_format, bool include_alpha)
 {
-    QImage img(size, alpha_format ? QImage::Format_ARGB32 : QImage::Format_RGB32);
+    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)
diff --git a/src/opengl/qpaintengine_opengl.cpp b/src/opengl/qpaintengine_opengl.cpp
index cc58c09..c823187 100644
--- a/src/opengl/qpaintengine_opengl.cpp
+++ b/src/opengl/qpaintengine_opengl.cpp
@@ -4931,7 +4931,8 @@ void QOpenGLPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
 
     glEnableClientState(GL_VERTEX_ARRAY);
     glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-    bool antialias = !(ti.fontEngine->fontDef.styleStrategy & QFont::NoAntialias);
+    bool antialias = !(ti.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);