https://bugs.freedesktop.org/show_bug.cgi?id=28154
--- Comment #1 from Marek Olšák maraeo@gmail.com 2010-05-26 05:14:30 PDT --- This vertex format (GL_INT) is not supported by hw and we have to add some kind of fallback for this. You may workaround this bug by typing RADEON_NO_TCL=1 before the executable. This will use software vertex processing, which is slow but should handle all such corner cases.