https://bugs.freedesktop.org/show_bug.cgi?id=83436
--- Comment #5 from smoki smoki00790@gmail.com --- (In reply to comment #4)
Wait a minute... Unigine is affected, but it's 64bit. Reporting bugs is confusing, especially when you can't edit your post ;)
Unigine Heaven have 64 and 32 variants in it as i see, are you sure he does not load 32bit one?
If you build you mesa try -O3 gcc optimization, that seems fixed those... don't know yet what is particular issue with default optimization :).