https://bugs.freedesktop.org/show_bug.cgi?id=96398
--- Comment #7 from Jan Ziak 0xe2.0x9a.0x9b@gmail.com --- (In reply to Nicolai Hähnle from comment #5)
Can you produce an apitrace?
http://atom-symbol.net/f/2016-07-21/ShadowOfMordor.trace.xz
The issue should manifest itself in some frames at the end of the trace.