https://bugs.freedesktop.org/show_bug.cgi?id=93353
--- Comment #8 from Ilia Mirkin imirkin@alum.mit.edu --- The errors relating to r600 indicate it's having trouble converting some TGSI shader. However those don't appear to be printed without --enable-debug. I've pushed out a fix for another assertion, so try a mesa git head build (make sure it includes commit eca8f38dcffb7), with --enable-debug, and run with ST_DEBUG=tgsi -- that should hopefully show which shader r600 is having trouble compiling.