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[raster] fix raster blending (cherry-pick 93c59f4) #4573

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May 17, 2017
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5 changes: 4 additions & 1 deletion src/core/raster/qgsrasterdrawer.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -99,7 +99,10 @@ void QgsRasterDrawer::draw( QPainter* p, QgsRasterViewPort* viewPort, const QgsM

delete block;

p->setCompositionMode( QPainter::CompositionMode_SourceOver ); // go back to the default composition mode
if ( feedback && feedback->renderPartialOutput() )
{
p->setCompositionMode( QPainter::CompositionMode_SourceOver ); // go back to the default composition mode
}

// ok this does not matter much anyway as the tile size quite big so most of the time
// there would be just one tile for the whole display area, but it won't hurt...
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