Comment # 18 on bug 77785 from smoki

 So i disabled it like in this commit, array size undefined and remove it:

http://cgit.freedesktop.org/mesa/mesa/commit/?id=75b7e1df139676f2456fea4d3a57cf0044d8409e

 For PTTM and ATH games that does not help, but looks very similar to be format
issue... it just needs alpha there but not got that :).