Hi,
On Wed 23 Dec 20, 18:31, Ilia Mirkin wrote:
FWIW this is something I added, hoping it was going to get used at some point, but I never followed up with support in xf86-video-nouveau for Xv. At this point, I'm not sure I ever will. I encoded the "enabled" part into the value with a high bit (1<<24) -- not sure that was such a great idea. All NVIDIA hardware supports colorkey (and not actual alpha, until the very latest GPUs - Volta/Turing families), although my implementation only covers the pre-G80 series (i.e. DX9 and earlier GPUs - pre-2008). Should a determination of usefulness be reached, it would be easy to implement on the remainder though.
Interesting to know!
Regarding a generic colorkey property, there was a discussion under thread: drm: Add generic colorkey properties for display planes
and the latest proposal (RFC v4) can be found here: https://patchwork.ozlabs.org/project/linux-tegra/patch/20180807172202.1961-2...
It looks like this was much more complex than anticipated and the series was more or less abandonned. I didn't feel like picking it up in my logicvc series so I kept the colorkey patch as not for merge.
If someone's up for picking the proposal and continuing the discussion, I could provide insight on how it would fit with logicvc though!
Cheers,
Paul
On Wed, Dec 23, 2020 at 5:20 PM Simon Ser contact@emersion.fr wrote:
nouveau already has something for colorkey: https://drmdb.emersion.fr/properties/4008636142/colorkey
I know this is marked "not for merge", but it would be nice to discuss with them and come up with a standardized property.