http://bugs.winehq.org/show_bug.cgi?id=20297
--- Comment #3 from Rico kgbricola@web.de 2009-10-10 09:08:05 --- It looks much better on a NVIDIA 8800GTS (190.18). There are no "GL_INVALID_OPERATION" errors in the terminal.
Try to upgrade your graphics driver (I guess version 9.9 is the newest).
fixme:d3d_shader:print_glsl_info_log Error received from GLSL shader
If the new driver doesn't solve the problem, please add a +d3d_shader log (a full version, not only a part!). If the size is too big, compress it with bzip or some other program.