http://bugs.winehq.org/show_bug.cgi?id=13122
--- Comment #23 from H. Verbeet hverbeet@gmail.com 2008-05-22 05:57:32 --- Actually... the issue could also be doing eg. ReadPixels or CopyTexImage on a multisampled FBO. In principle these should always be redundant when FBOs are used, but I'm not completely sure they never happen. Are there any GL errors in your console output?