https://bugs.freedesktop.org/show_bug.cgi?id=98238
--- Comment #1 from Arek Ruśniak arek.rusi@gmail.com --- Hi, i am pretty sure few months ago worked as it should. i've tried to bisected but it not easy or maybe it's almost impossible find good one kernel/LLVM/mesa/libdrm/xorg/glamor.. So i installed fresh debian 8: kernel 3.16 LLVM 3.5 mesa 10.6 (IIRC) xorg 1.16.x and issue still here, maybe this is game bug not mesa or i've got blind i have this issue on steam, i can test gog version later. And there is beta_public_linux on steam so can be worth to test as well
i965 & r600 works good Tested on verde, juniper and haswell.