Although QPainter::drawImage()/drawPixmap() would render images scaled
according to their devicePixelRatio(), that would not happen for
drawTiledPixmap() and when using a textured brush. Implemented here,
in combination with the pending "High-dpi drawTiledPixmap (raster
paint engine)" commit.
[ChangeLog][QtGui] Fix drawTiledPixmap() and texture-brush painting with high-DPR images
Task-number: QTBUG-67248
Change-Id: I037e3f897fa708038a0222d3b0c61c7842d87961
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>