[nagisa]

This reminds me of a recent submission about Wayland colour management and HDR work: https://news.ycombinator.com/item?id=25159592.

In particular https://gitlab.freedesktop.org/swick/wayland-protocols/-/blo... was linked which discussed how a wayland compositor would have to display mixed "HDR" and SDR content on the same display. This document even has references to EDR. Ultimately this would end up achieving a similar result as what's described in the blog post here.

If you're interested in the technical details on what may be necessary to achieve something like this, the wayland design document might be a good read.