[Mesa-dev] [PATCH 031/133] nir: Add fine and coarse derivative opcodes

[Jason Ekstrand]

On Tue, Dec 16, 2014 at 10:31 PM, Connor Abbott <cwabbott0 at gmail.com> wrote:
>
> As a future cleanup, would it be worth getting rid of fddx and fddy
> entirely and just generating the correct variant based on the
> glHint/drirc configuration?
>

Nope.  https://www.opengl.org/registry/specs/ARB/derivative_control.txt


>
> On Tue, Dec 16, 2014 at 1:04 AM, Jason Ekstrand <jason at jlekstrand.net>
> wrote:
> > ---
> >  src/glsl/nir/nir_opcodes.h | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/src/glsl/nir/nir_opcodes.h b/src/glsl/nir/nir_opcodes.h
> > index bee4bd1..9a7a2ab 100644
> > --- a/src/glsl/nir/nir_opcodes.h
> > +++ b/src/glsl/nir/nir_opcodes.h
> > @@ -111,6 +111,10 @@ UNOP(fcos_reduced, nir_type_float)
> >  /*@{*/
> >  UNOP(fddx, nir_type_float)
> >  UNOP(fddy, nir_type_float)
> > +UNOP(fddx_fine, nir_type_float)
> > +UNOP(fddy_fine, nir_type_float)
> > +UNOP(fddx_coarse, nir_type_float)
> > +UNOP(fddy_coarse, nir_type_float)
> >  /*@}*/
> >
> >  /**
> > --
> > 2.2.0
> >
> > _______________________________________________
> > mesa-dev mailing list
> > mesa-dev at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/mesa-dev
>
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