this post was submitted on 19 Nov 2025
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Is completly up to each compositor to implement properly. Its still experimental in KDE because afaik theres no proper SDR + HDR tone mapping for mixed apps on the display, like a desktop.
Valve made their own compositor and cheats the problem by ensuring their client and overlay supports HDR colors + only having to handle the HDR from game output.
Not if you have an Nvidia GPU before 2017, and again already a thing in X11.
Again, VRR and wayland's ingenious solution to this was triple buffering, which is a pure software solution that adds latency making it unsuitable in several cases like this: https://github.com/hyprwm/Hyprland/issues/3373
Welcome to Xwayland clipboard hell: https://github.com/hyprwm/Hyprland/issues/6132
Its not that Wayland can't easily fix any of these issues or that the other major improvements you mentioned are not worth it, its that it took Wayland like 13 years to do so.
Most of this should have been sorted out in the first couple years of development. People were already making fun of Wayland back in the day for pretending to be "decoupled from the graphics hardware" and then deciding on the aforementioned triple buffer.
Wayland didn't even merge in HDR support until 9 months ago: https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/14#note_2777587