https://bugs.freedesktop.org/show_bug.cgi?id=37171
--- Comment #5 from Sven Arvidsson sa@whiz.se 2011-05-13 10:21:50 PDT --- (In reply to comment #4)
I can run HL2 on my rv350 on windows with the highest settings, with HDR and everything turned on. On r500 series cards the shader size limits are several times larger, Wine overhead can't be that much. Even if HL2 has a separate, more complicated shader set for SM3 cards (Portal does), it shouldn't hit any hardware limitation IMHO.
I don't really recall if this was the exact problem with HL2 or not, but Wine does raise the limit quite a bit and Mesa doesn't seem to handle this as well as some other drivers, see bug 29137.