From 0985805ab3c7de5b15c115a98afb15944b6d93b9 Mon Sep 17 00:00:00 2001
From: Alexis Menard <alexis.menard@trolltech.com>
Date: Mon, 9 Mar 2009 14:33:02 +0100
Subject: Fixes:    Don't fill the pixmap because we will copy the cache into
 it.

RevBy:    bnilsen
AutoTest: All pass + plasma ok
---
 src/gui/graphicsview/qgraphicsscene.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index b509507..8a67d24 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -4736,11 +4736,9 @@ void QGraphicsScenePrivate::drawItemHelper(QGraphicsItem *item, QPainter *painte
             if (newCacheIndent != deviceData->cacheIndent || deviceRect.size() != pix.size()) {
                 QPoint diff = newCacheIndent - deviceData->cacheIndent;
                 QPixmap newPix(deviceRect.size());
-                // ### Investigate removing this fill (test with Plasma and
-                // graphicssystem raster).
-                newPix.fill(Qt::transparent);
                 if (!pix.isNull()) {
                     QPainter newPixPainter(&newPix);
+                    newPixPainter.setCompositionMode(QPainter::CompositionMode_Source);
                     newPixPainter.drawPixmap(-diff, pix);
                     newPixPainter.end();
                 }
-- 
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