[Mesa-dev] [PATCH 00/26] RadeonSI: Primitive culling with async compute

[Marek Olšák]

Hi Dieter,

The latest version is on gitlab as a merge request.

Marek

On Mon, Apr 8, 2019 at 6:06 PM Dieter Nützel <Dieter at nuetzel-hh.de> wrote:

> After you've recuperated from hopefully GREAT vacation,
>
> is it time? ;-)
>
> Greetings,
> Dieter
>
> Am 26.02.2019 03:31, schrieb Dieter Nützel:
> > Hello Marek,
> >
> > do you plan to commit or rebase both set?
> >
> > Dieter
> >
> > Am 14.02.2019 07:29, schrieb Marek Olšák:
> >> I have some fixes for Sea Islands that improve Radeon 290X performance
> >> to 43 fps, moving it just below Radeon VII in the picture.
> >>
> >> Marek
> >>
> >> On Wed, Feb 13, 2019 at 12:16 AM Marek Olšák <maraeo at gmail.com>
> >> wrote:
> >>
> >>> Hi,
> >>>
> >>> This patch series uses async compute to do primitive culling before
> >>> the vertex shader. It significantly improves performance for
> >>> applications
> >>> that use a lot of geometry that is invisible because primitives
> >>> don't
> >>> intersect sample points or there are a lot of back faces, etc.
> >>>
> >>> It passes 99.9999% of all tests (GL CTS, dEQP, piglit) and is 100%
> >>> stable.
> >>> It supports all chips all the way from Sea Islands to Radeon VII.
> >>>
> >>> As you can see in the results marked (ENABLED) in the picture below,
> >>> it destroys our competition (The GeForce results are from a Phoronix
> >>> article from 2017, the latest ones I could find):
> >>>
> >>> Benchmark: ParaView - Many Spheres - 2560x1440
> >>> https://people.freedesktop.org/~mareko/prim-discard-cs-results.png
> >>>
> >>> The last patch describes the implementation and functional
> >>> limitations
> >>> if you can find the huge code comment, so I'm not gonna do that
> >>> here.
> >>>
> >>> I decided to enable this optimization on all Pro graphics cards.
> >>> The reason is that I haven't had time to benchmark games.
> >>> This decision may be changed based on community feedback, etc.
> >>>
> >>> People using the Pro graphics cards can disable this by setting
> >>> AMD_DEBUG=nopd, and people using consumer graphics cards can enable
> >>> this by setting AMD_DEBUG=pd. So you always have a choice.
> >>>
> >>> Eventually we might also enable this on consumer graphics cards for
> >>> those
> >>> games that benefit. It might decrease performance if there is not
> >>> enough
> >>> invisible geometry.
> >>>
> >>> Branch:
> >>> https://cgit.freedesktop.org/~mareko/mesa/log/?h=prim-discard-cs
> >>>
> >>> Please review.
> >>>
> >>> Thanks,
> >>> Marek
> >> _______________________________________________
> >> mesa-dev mailing list
> >> mesa-dev at lists.freedesktop.org
> >> https://lists.freedesktop.org/mailman/listinfo/mesa-dev
> > _______________________________________________
> > mesa-dev mailing list
> > mesa-dev at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/mesa-dev
>
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