On Sun, 7 Oct 2012 08:51:07 -0700, Kenneth Graunke <kenneth at whitecape.org> wrote: > A previous patch, namely: > > commit bf97b276ca04cee9ab65ffd378fa8e6aedd71ff6 > Author: Daniel Vetter <daniel.vetter at ffwll.ch> > Date: Wed Apr 11 20:42:41 2012 +0200 > > drm/i915: implement w/a for incorrect guarband clipping > > accidentally set bit 5 in 3D_CHICKEN, which has nothing to do with > clipping. This patch changes it to be set in 3D_CHICKEN3, where it > belongs. > > The game "Dante" demonstrates random clipping issues when guardband > clipping is enabled and bit 5 of 3D_CHICKEN3 isn't set. So the > workaround is actually necessary. > > Cc: Daniel Vetter <daniel.vetter at ffwll.ch> > Cc: Oliver McFadden <oliver.mcfadden at linux.intel.com> > Acked-by: Paul Menzel <paulepanter at users.sourceforge.net> > Signed-off-by: Kenneth Graunke <kenneth at whitecape.org> Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>
