http://bugs.winehq.org/show_bug.cgi?id=26752
--- Comment #3 from Henri Verbeet hverbeet@gmail.com 2011-04-12 16:23:18 CDT --- (In reply to comment #0)
I'm using the r300g driver (b27f206b0cc9bf31bff6dd1abe66c4f21f3de21e), Kernel 2.6.38.2, RV530. I hope this isn't just some Mesa bug just uncovered by this change however I don't see anything like this with NVIDIA.
It most likely is. I've been meaning to look into this (on the Mesa side), but haven't gotten around to it.