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-rw-r--r--src/gui/graphicsview/qgraphicsscene.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index 4ee2301..6934abc 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -4285,6 +4285,12 @@ static void _q_paintIntoCache(QPixmap *pix, QGraphicsItem *item, const QRegion &
if (!subPix.isNull()) {
// Blit the subpixmap into the main pixmap.
pixmapPainter.begin(pix);
+ if (item->cacheMode() == QGraphicsItem::DeviceCoordinateCache
+ && itemToPixmap.type() > QTransform::TxTranslate) {
+ pixmapPainter.setCompositionMode(QPainter::CompositionMode_SourceAtop);
+ } else {
+ pixmapPainter.setCompositionMode(QPainter::CompositionMode_Source);
+ }
pixmapPainter.setClipRegion(pixmapExposed);
pixmapPainter.drawPixmap(br.topLeft(), subPix);
pixmapPainter.end();