https://bugs.freedesktop.org/show_bug.cgi?id=25280
--- Comment #5 from Alex Deucher agd5f@yahoo.com 2011-09-29 11:42:52 PDT --- smooth and stippled polygons/lines/etc. are not implemented in r600c/g or r300c/g at the moment as they require adding special code to the fragment shader to handle them.