7288d010e0
_NEW_WINDOW_POS wasn't a real Mesa state flag, but we were missing _NEW_BUFFERS to update the stipple offset when FBO binding or window size changed, and _NEW_POLYGON to update when stippling gets enabled. Fixes oglconform's tristrip test. Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>