http://bugs.winehq.org/show_bug.cgi?id=10837
--- Comment #3 from Henry nospam@thenerdshow.com 2008-08-09 13:32:35 --- This was caused by "Sync to vBlank" (linux driver setting) and it happens on nVidia too when playing blender-generated games.
If this kind of graphics corruption is expected from sync setting, we can mark this bug as WORKSFORME.