--- qt-everywhere-commercial-src-4.6.3/src/gui/painting/qblendfunctions.cpp	2010-06-02 04:00:19.000000000 +0200
+++ qt-everywhere-commercial-src-4.6.3.patched/src/gui/painting/qblendfunctions.cpp	2010-06-14 12:29:25.092584200 +0200
@@ -44,6 +44,8 @@
 
 QT_BEGIN_NAMESPACE
 
+static const qreal aliasedCoordinateDelta = 0.5 - 0.015625;
+
 struct SourceOnlyAlpha
 {
     inline uchar alpha(uchar src) const { return src; }
@@ -169,11 +171,14 @@
 template <typename SRC, typename T>
 void qt_scale_image_16bit(uchar *destPixels, int dbpl,
                           const uchar *srcPixels, int sbpl,
-                          const QRectF &targetRect,
+                          const QRectF &target,
                           const QRectF &srcRect,
                           const QRect &clip,
                           T blender)
 {
+    const QRectF targetRect = target.translated(aliasedCoordinateDelta,
+                                                aliasedCoordinateDelta);
+
     qreal sx = targetRect.width() / (qreal) srcRect.width();
     qreal sy = targetRect.height() / (qreal) srcRect.height();
 
@@ -682,11 +687,14 @@
 
 template <typename T> void qt_scale_image_32bit(uchar *destPixels, int dbpl,
                                                 const uchar *srcPixels, int sbpl,
-                                                const QRectF &targetRect,
+                                                const QRectF &target,
                                                 const QRectF &srcRect,
                                                 const QRect &clip,
                                                 T blender)
 {
+    const QRectF targetRect = target.translated(aliasedCoordinateDelta,
+                                                aliasedCoordinateDelta);
+
     qreal sx = targetRect.width() / (qreal) srcRect.width();
     qreal sy = targetRect.height() / (qreal) srcRect.height();