http://bugs.winehq.org/show_bug.cgi?id=11826
--- Comment #3 from Stefan Dösinger stefandoesinger@gmx.at 2008-03-03 11:37:23 --- You said "Since version 0.9.48". That made me think that this is a regression, ie, it worked in 0.9.47. Did you test earlier versions?
Note that if this is an ATI driver then the active bughunting community won't be able to fix it. All in All Wine bugs in the OpenGL area are rather rare, since the platform independent part is just an 1:1 forward. Wine can't do anything wrong there, and in the same way we cannot workaround game<->driver incompatibilities. The only case where Wine could do something wrong is the pixelformat setup.