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-rw-r--r--src/plugins/platforms/cocoa/qnsview.mm1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm
index 1f19b07904..f0ece54d20 100644
--- a/src/plugins/platforms/cocoa/qnsview.mm
+++ b/src/plugins/platforms/cocoa/qnsview.mm
@@ -316,6 +316,7 @@ static QTouchDevice *touchDevice = 0;
);
CGImageRef bsCGImage = m_backingStore->getBackingStoreCGImage();
CGImageRef cleanImg = CGImageCreateWithImageInRect(bsCGImage, backingStoreRect);
+ CGContextSetBlendMode(cgContext, kCGBlendModeCopy);
CGContextDrawImage(cgContext, dirtyWindowRect, cleanImg);
// Clean-up: