https://bugs.freedesktop.org/show_bug.cgi?id=38280
--- Comment #3 from Andy Furniss lists@andyfurniss.entadsl.com 2011-06-14 05:54:32 PDT --- (In reply to comment #2)
I wonder if this means that the same commit broke rendering in Doom3 on non-Evergreen hardware?
Yes. with current master on 4890 there is no distortion behind glass, there is with 9346d895e7ff6c1f01b46513694542026ffba5cc reverted.
Also see the same regression as the OP in etqw.