https://bugs.freedesktop.org/show_bug.cgi?id=64443
--- Comment #3 from Kenneth Graunke kenneth@whitecape.org --- But that's still several months out, and you probably don't want to wait that long. In the meantime, you can do: export MESA_GL_VERSION_OVERRIDE=3.2 export MESA_GLSL_VERSION_OVERRIDE=150
before launching OilRush...and it should work. I haven't tested it specifically but that works for both Unigine Heaven and Unigine Valley.
It might be worth adding a driconf setting to overrides these in a 9.1.4 release...not sure what people think about that.