https://bugs.freedesktop.org/show_bug.cgi?id=100387
--- Comment #9 from Peter tuharsky@misbb.sk --- (In reply to Hi-Angel from comment #5)
But fixing this bug won't help to the game anyway, because the next problem it runs into is a very old one of requiring too many GPRs
Are You sure? I don't know the exact background here, but on Radeon R7 it runs seamlessly...