[Mesa-dev] Change in Mesa triggers bug in Firefox Nightly with WebRender on old AMD hardware

[Ilia Mirkin]

On Tue, Apr 30, 2019 at 2:48 AM Dave Airlie <airlied at gmail.com> wrote:
>
> On Tue, 30 Apr 2019 at 08:47, Dave Airlie <airlied at gmail.com> wrote:
> >
> > On Tue, 30 Apr 2019 at 08:42, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
> > >
> > > Thing is, I think that would not be enough - with the "recent" (like
> > > past 2 years) CSO/state change detection changes, I think that you can
> > > end up with no sampler set for a buffer view. Perhaps someone with the
> > > hw can investigate what goes wrong?
> >
> > I'm trying to get a live r600/700 machine, I plugged in my rv635 and
> > rv740 gpus, and they both seemed toast, I've got an rv635 laptop I'll
> > try and get up to date.
>
> I've found a working rv770 and reproduced it here. This isn't an
> indication I'll get to fix it soon, but I will try.

When I was debugging this issue on nouveau (and trying to nail down
specifically what didn't work and what was required to make it work),
I found that using a gallium test to debug this made the issues at
hand quite obvious, and I didn't have to worry about how to force the
st to assign mappings here or there for views or samplers. I'm not
sure if I still have those left over, but I'll have a look tonight.
They're also not terribly difficult to write.

Cheers,

  -ilia