https://bugs.freedesktop.org/show_bug.cgi?id=104190
--- Comment #3 from Tommy Vestermark tovsurf@vestermark.dk --- I can confirm seeing the same artifacts in CSGO on a R9 285 (Tonga) using Ubuntu 17.10 with Mesa 17.3.2, LLVM 5.0 (Padoka Stable PPA).