[Mesa-dev] [RFC PATCH] Add GL_MESA_ieee_fp_alu_mode specification draft

[Ilia Mirkin]

On Sun, Feb 23, 2020 at 8:57 PM Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>
> ---
>
> We talked about something like this a while back, but the end result
> was inconclusive. I added a TGSI MUL_ZERO_WINS shader property for nine.
> But it'd be nice for wine to be able to control this too.
>
> I couldn't actually find any evidence of the discussion from 2017 or so,
> so ... let's have another one.

Ian, Matteo, thanks for your feedback.

Based on IRC discussion today, it looks like radeonsi is not
interested in gaining such a feature, and Ian's comments all point
away from exposing the actual hardware bits, which I think means this
ext is DOA. I don't think support in just nouveau + r600 justifies the
effort of getting this going -- too small of a user base between them,
and they can use nine if they really want better perf. I guess that's
why this ext died back in 2017 too, but at least now there will
hopefully be an easier-to-find record of it.

Cheers,

  -ilia