http://bugs.winehq.org/show_bug.cgi?id=27798
--- Comment #6 from Ruslan b7.10110111@gmail.com 2011-07-16 08:32:12 CDT --- (In reply to comment #5)
(In reply to comment #3)
OpenGL version string: 1.4 Mesa 7.7.1
That version of Mesa is over a year old, please try with a more recent version like (soon to be released) 7.11 or current git.
Newer mesa (7.10.2-ubuntu) is even more buggy (almost no textures are applied, for example), but still, this bug is also visible - the same distortion of vertices and performance degradation.