[Mesa-dev] [PATCH v2 5/5] i965: Shrink brw_vue_map struct.

Eric Anholt eric at anholt.net
Fri Mar 22 17:42:00 PDT 2013


Paul Berry <stereotype441 at gmail.com> writes:

> On 22 March 2013 12:32, Eric Anholt <eric at anholt.net> wrote:
>
>> Paul Berry <stereotype441 at gmail.com> writes:
>> > diff --git a/src/mesa/drivers/dri/i965/brw_vs.c
>> b/src/mesa/drivers/dri/i965/brw_vs.c
>> > index c8ca018..7e941dd 100644
>> > --- a/src/mesa/drivers/dri/i965/brw_vs.c
>> > +++ b/src/mesa/drivers/dri/i965/brw_vs.c
>> > @@ -66,6 +66,12 @@ brw_compute_vue_map(struct brw_context *brw, struct
>> brw_vs_compile *c,
>> >     vue_map->slots_valid = slots_valid;
>> >     int i;
>> >
>> > +   /* Make sure that the values we store in
>> vue_map->vert_result_to_slot and
>> > +    * vue_map->slot_to_vert_result won't overflow the signed chars that
>> are
>> > +    * used to store them.
>> > +    */
>> > +   STATIC_ASSERT(BRW_VARYING_SLOT_MAX <= 128);
>>
>> If the max varying slot was 128, that would be overflowed, right?
>>
>
> Actually, BRW_VARYING_SLOT_MAX is a misnomer--it's actually the max varying
> slot + 1.  Want me to rename it BRW_NUM_VARYING_SLOT_MAX_PLUS_1 or
> something?

BRW_VARYING_SLOT_COUNT would be pretty good.
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