4da9a66c1d
when doing old-skool rendering. We also needed to climb up the hierarchy looking to see if a parent is dirty for each dirty component and combine the child and parent dirty rects and only repaint the parent otherwise we can run into problems with render order. Oh the complexity (though Swing does this too). git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1328 542714f4-19e9-0310-aa3c-eee0fc999fb1