a626fea704
the image as a parameter so we avoid drawing the whole tile if it's not all needed. Also, we can avoid setting any clip regions at all this way, and avoid trips to the X server. Fixes several background rendering problems. Also fix a signedness problem in the compositing code (r=tor). r=pavlov. git-svn-id: svn://10.0.0.236/trunk@69388 18797224-902f-48f8-a5cc-f745e15eee43