http://bugs.winehq.org/show_bug.cgi?id=12944
--- Comment #13 from Tobias Jakobi liquid.acid@gmx.net 2008-05-15 08:24:26 --- Problem also appears on Intel i945 (mesa-6.5.2). There also during the entire intro sequence (and not only the first frames). Tested with RenderTargetLockMode set to auto.
With LIBGL_ALWAYS_INDIRECT=1 the problem is gone.
Still a driver bug? I'm reporting this on the mesa bugtracker.