[PATCH 2/2] amd/display: add cursor check for YUV primary plane

[Simon Ser]

On Friday, February 19th, 2021 at 6:41 PM, Kazlauskas, Nicholas <nicholas.kazlauskas at amd.com> wrote:

> > Related: how does this affect scaling? Right now there is a check that makes
> > sure the cursor plane scaling matches the primary plane's. Should we instead
> > check that the cursor plane scaling matches the top-most XRGB/ARGB plane's?
> >
>
> Can't really do scaling on the cursor plane itself. It scales with the
> underlying pipe driving it so it'll only be correct if it matches that.
>
> Primary plane isn't the correct check here since we always use the
> topmost pipe in the blending chain to draw the cursor - in the example I
> gave it'd have to match the overlay plane's scaling, not the primary
> plane's.

OK, thanks for the info. That means the check I introduced some time
ago is wrong (it's right above my patch). I'll send a fix for that too.