[Mesa-dev] [PATCH 21/22] swrast: stop using _DepthBuffer in triangle code

[Brian Paul]

On Wed, Dec 21, 2011 at 2:16 PM, Eric Anholt <eric at anholt.net> wrote:
> On Sun, 18 Dec 2011 20:08:26 -0700, Brian Paul <brianp at vmware.com> wrote:
>> The only consequence is we can only use the occlusion_zless_16_triangle()
>> function with MESA_FORMAT_Z16.
>
> I'm not following that conclusion, probably due to ignorance of swrast
> spans code.  I would think that Z32 would still work for that other path
> -- or is span.z stored as something other than 32 bits of Z in that
> case, too?

Z32 would still work, but in practice that format of depth buffer is
seldom used with swrast.  Z16 is the default.  I was tempted to remove
the function entirely.

-Brian