http://bugs.winehq.org/show_bug.cgi?id=21179
--- Comment #5 from Henri Verbeet hverbeet@gmail.com 2009-12-31 07:37:16 --- That commit only changed the default, so setting RenderTargetLockMode to "readdraw" should also fix this. I'll see if I can reproduce and fix this with the demo, though probably next week.