https://bugs.freedesktop.org/show_bug.cgi?id=54230
--- Comment #5 from Tom Stellard tstellar@gmail.com 2012-08-30 13:13:28 UTC --- The llvm backend hasn't been tested much on Cayman, so probably some of the Cayman specific features aren't working correctly. Could you set the environment variable R600_DUMP_SHADERS=1 and then post the debug output from compiz and minecraft?