[Mesa-dev] [PATCH 3/3] panfrost: Add support for modifiers

Daniel Stone daniel at fooishbar.org
Thu Jul 4 10:37:58 UTC 2019


On Thu, 4 Jul 2019 at 09:47, Tomeu Vizoso <tomeu.vizoso at collabora.com> wrote:
> On Thu, 4 Jul 2019 at 10:05, Tomeu Vizoso <tomeu.vizoso at collabora.com> wrote:
> > -        pres->layout = should_tile ? PAN_TILED : PAN_LINEAR;
> > +       if (want_afbc || (is_renderable && can_afbc && !is_texture))
> > +                pres->layout = PAN_AFBC;
> We regress here because we seem to have some bugs regarding AFBC usage
> with some formats such as rgba4 and rgb5_a1:
> https://gitlab.freedesktop.org/tomeu/mesa/-/jobs/399237
> I'm looking at only enabling AFBC when explicitly asked to by the winsys.

Again, the winsys just pulls the list of acceptable format/modifier
pairs from the EGL format query. If Panfrost declares 1555+AFBC to be
a supported combination, then the winsys will pass that on for clients
to use. If it isn't working, my suggestion is to just never advertise
it in the first place.


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