[Mesa-dev] [PATCH 03/10] i965: Don't implicitly set predicate default state in brw_CMP.

[Matt Turner]

On Sun, May 25, 2014 at 1:08 AM, Kenneth Graunke <kenneth at whitecape.org> wrote:
> diff --git a/src/mesa/drivers/dri/i965/brw_clip_tri.c b/src/mesa/drivers/dri/i965/brw_clip_tri.c
> index fdab260..5894b80 100644
> --- a/src/mesa/drivers/dri/i965/brw_clip_tri.c
> +++ b/src/mesa/drivers/dri/i965/brw_clip_tri.c
> @@ -433,6 +434,7 @@ void brw_clip_tri( struct brw_clip_compile *c )
>               BRW_CONDITIONAL_GE,
>               c->reg.nr_verts,
>               brw_imm_ud(3));
> +      brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);

I think the following instructions are predicated on the flag value
set by this compare instruction -- a couple of shifts, and add, and
then a while instruction. I don't see a break or another way out of
the loop, so I'm guessing that the while is predicated on this
compare.