Originally posted by birdie
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As noted here Neither X11 or Wayland support HDR meta data. The stuff you need to run two different color depths from 2 different applications outputting on the same screen.
Wayland DRM lease protocol is support by wayland and equal exist under X11. What is this a direct DRM application under Linux can go basically to what color bit depth it wants on screen include HDR but this is also exclusive control of the screen. Is there a identical way todo HDR under X11 and Wayland that does not break SDR yes there is lease the screen and be dual monitor or use a different TTY for the lease.
HDR support in Wayland currently is implemented exactly as badly as X11..
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