this post was submitted on 17 Mar 2024
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To play Proton games you only need the latest gamescope from git, the HDR layer and environment variables are no longer needed for gamescope
Just set the launch arguments on Steam for any game to:
gamescope --hdr-enabled --nested-refresh 165 --fullscreen --steam -w 3440 -W 3440 -h 1440 -H 1440 -- %command%.Don't forget to set your refresh rate and resolution.
If you want to play videos files in HDR (YouTube also works) you need to use mpv together with the HDR layer.
After installing the layer you can run mpv like this:
ENABLE_HDR_WSI=1 mpv --vo=gpu-next --target-colorspace-hint --gpu-api=vulkan --gpu-context=waylandvk "https://www.youtube.com/watch?v=dQw4w9WgXcQ".Thanks, appreciate the write up. Definitely sounds like HDR under Linux has a long way to go to reach the "just works" level.
I asked this in another thread but I would be curious to get different perspectives; could you use
gamescopeandmpvunder Gnome and get HDR support or is KDE's HDR support essential here?On the Steam Deck it already "just works" for a lot of games (with an OLED or an external display). So we're not that far off for those changes propagating to Desktop.