[Mesa-dev] [Mesa-stable] [PATCH] radeonsi: reduce MAX_GEOMETRY_OUTPUT_VERTICES

[Marek Olšák]

It's not needed in stable. This is a corner case for piglit.

Marek

On Tue, Jun 18, 2019 at 6:03 AM Juan A. Suarez Romero <jasuarez at igalia.com>
wrote:

> On Fri, 2019-06-14 at 19:00 -0400, Marek Olšák wrote:
> > From: Nicolai Hähnle <nicolai.haehnle at amd.com>
> >
> > This fixes piglit spec at glsl-1.50@gs-max-output.
> > ---
>
>
> Does it make sense to nominate this for stable?
>
>         J.A.
>
> >  src/gallium/drivers/radeonsi/si_get.c | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/src/gallium/drivers/radeonsi/si_get.c
> b/src/gallium/drivers/radeonsi/si_get.c
> > index c1bddca1a66..9496817ac84 100644
> > --- a/src/gallium/drivers/radeonsi/si_get.c
> > +++ b/src/gallium/drivers/radeonsi/si_get.c
> > @@ -256,21 +256,23 @@ static int si_get_param(struct pipe_screen
> *pscreen, enum pipe_cap param)
> >               return sscreen->info.chip_class <= GFX8 ?
> >                       PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600 : 0;
> >
> >       /* Stream output. */
> >       case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
> >       case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
> >               return 32*4;
> >
> >       /* Geometry shader output. */
> >       case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
> > -             return 1024;
> > +             /* gfx8 and earlier can do more, but nobody uses it
> because it
> > +              * would be a bad idea for performance. */
> > +             return 256;
> >       case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
> >               return 4095;
> >       case PIPE_CAP_MAX_GS_INVOCATIONS:
> >               /* The closed driver exposes 127, but 125 is the greatest
> >                * number that works. */
> >               return 125;
> >
> >       case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
> >               return 2048;
> >
>
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