3 Apr
2019
3 Apr
'19
3:52 p.m.
On Wed, 2019-04-03 at 16:15 +0100, Daniel Stone wrote:
There's already a list of supported formats for each DRM plane, which you can get via drmModeGetPlane (being careful to enable universal planes so you can discover the primary plane). The same information is present in the 'IN_FORMATS' property, which is more difficult to parse but also tells you about modifiers.
modesetting already pulls all this out (at least in the atomic path) so we can reason about acceptable modifiers.
D'oh, I knew that. The problem then is modesetting isn't pulling that info out early enough in PreInit. I'll consider that another case of xorg/xserver#9 then.
- ajax