http://bugs.winehq.org/show_bug.cgi?id=19829
--- Comment #3 from Stefan Dösinger stefandoesinger@gmx.at 2009-08-24 07:24:05 --- I agree with Henri on this.
The best way to go is to write a test app that reproduces this without Wine - e.g. a small glut based opengl app. It should be fairly easy to reproduce, those glCompressedTexSubImage2D bugs usually are pretty easy to hit.
I don't think we should put in a workaround for this bug again. The long-time use of glCompressedTexImage2D caused many other problems, and the best way to get a driver fixed is to trigger its bug.