[Mesa-dev] [PATCH 09/11] tgsi: remove culldist semantic.

[Roland Scheidegger]

On 05/14/2016 04:24 PM, Ilia Mirkin wrote:
> On Sat, May 14, 2016 at 10:23 AM, Roland Scheidegger <sroland at vmware.com> wrote:
>> Am 14.05.2016 um 14:55 schrieb Marek Olšák:
>>> Dave,
>>> It should be noted that clip distances can be disabled by
>>> pipe_rasterizer_state::clip_plane_enable, but cull distances can't.
>>> (same as GL)
>>
>> That only applies to user clip planes, not shader clip distances.
>
> Actually, it applies to both.

Yes, you are right. Ahh crap. draw, however, ignores the enable bits for 
clip distances (and we're probably relying on this even internally right 
now). Do blobs actually honor them? I'm wondering because some code 
changes I was recently doing at vmware shouldn't have worked if they 
did... Or maybe I got lucky...
In any case honoring the enable bits should still be possible even with 
both clip and cull integrated into the same output.

Roland