[PATCH 2/3] drm/nouveau/kms/nv50-: Report max cursor size to userspace

[Ilia Mirkin]

On Wed, Feb 24, 2021 at 11:53 AM Alex Riesen
<alexander.riesen at cetitec.com> wrote:
>
> Ilia Mirkin, Wed, Feb 24, 2021 17:48:39 +0100:
> > On Wed, Feb 24, 2021 at 11:35 AM Alex Riesen <alexander.riesen at cetitec.com> wrote:
> > > Ilia Mirkin, Wed, Feb 24, 2021 16:10:57 +0100:
> > > > The fact that you're getting lines with modetest means there's
> > > > something wrong with 256x256. What if you do 128x128 -- does that work
> > > > OK?
> > >
> > > Yes. Unfortunately in both cases.
> >
> > Just to be crystal clear -- are you saying that 128x128 works or does
> > not work? (You said "yes", which would imply it works OK, but then you
> > said both cases, which would imply doesn't work since 256x256 doesn't
> > work?)
>
> Modetest with 128x128 cursor works. Without damage to the cursor: modetest
> shows normal cursor in vanilla v5.11. Modetest also shows normal cursor in
> vanilla v5.11 with the commit reverted.

But modetest with 256x256 doesn't work (correctly) right? Or did I
misunderstand?

All the patch does is allow those large cursors to be used, which gets
reported via drm APIs and modesetting picks the largest cursor
available. (And actually I think it's even not required to use the
large cursors, it just controls what's reported in the defaults to
userspace.)

Thanks,

  -ilia