[RFC wayland-protocols v2 0/1] Color Management Protocol

[Philipp Zabel]

On Wed, 2019-03-06 at 18:09 +0100, Sebastian Wick wrote:
[...]
> 4. How do universal planes handle gamma when blending? This hopefully
>    has a sinmple answer and there probably is some documention which
>    I just can't find.

I think they currently don't, and it will depend on the driver. There is
hardware that only supports linear blending because there are no degamma
LUTs at all.

I've seen patches to add a per-plane DEGAMMA_LUT property for hardware
that does have them:

https://patchwork.kernel.org/patch/10601807/

regards
Philipp