http://bugs.winehq.org/show_bug.cgi?id=13828
--- Comment #7 from Henri Verbeet hverbeet@gmail.com 2010-04-20 07:22:05 --- If not a driver bug, this is more likely to be a problem in the underlying OpenGL/winex11.drv. I'd expect an OpenGL application that does the same thing to have the same problem.