http://bugs.winehq.org/show_bug.cgi?id=20519
--- Comment #3 from Henri Verbeet hverbeet@gmail.com 2009-10-30 10:13:48 --- For what it's worth, this should be fixed by http://cgit.freedesktop.org/mesa/mesa/commit/?id=8bba183b9eeb162661a287bf2e1... in Mesa.