Re: Color mode exposed to user space?

On Thu, 25 Mar 2021 12:12:09 -0400 Alex Deucher alexdeucher@gmail.com wrote:

• dri-devel

I don't think it's currently exposed anywhere.

Alex

On Wed, Mar 24, 2021 at 5:11 AM Werner Sembach wse@tuxedocomputers.com wrote:

...

Hello,

is the information which color mode is currently in used for a display (RGB, YCbCr444, or YCbCr420) exposed to user space somewhere?

If no: Where would be the best place to put code to expose it to sysfs?

Hi,

a very good question. Wayland compositors implementing color management will be interested to know this, and even better, to explicitly control this.

See e.g. Color Calibration Auditing System notes in https://gitlab.freedesktop.org/wayland/weston/-/issues/467 .

Thanks, pq