http://bugs.winehq.org/show_bug.cgi?id=14767
--- Comment #5 from Roderick Colenbrander thunderbird2k@gmx.net 2008-08-15 08:03:34 --- For opengl tests you need to look in the opengl32 directory.
I haven't checked your proposed patch but I guess it is using the OML extension. To be honest I haven't used a driver which supports that. I'll check the patch when I have time.