(In reply to comment #3)
> 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.

That screws up steam though, I get a whole bunch of these:
/home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/vgui2/src/surface_opengl.cpp
(569) : Assertion Failed: glIsTexture( id )
/home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/vgui2/src/surface_opengl.cpp
(785) : Assertion Failed: glIsTexture( nTextureID ) == GL_TRUE