Try to enable HDR with KDE Plasma 6

[DeadNews]

References

• https://zamundaaa.github.io/wayland/2023/12/18/update-on-hdr-and-colormanagement-in-plasma.html
• Is MPV possible to enable HDR on Plasma6? mpv-player/mpv#13078 (comment)

Nedded changes

• ENABLE_HDR_WSI=1 in environment variables
• target-colorspace-hint=yes in mpv.conf

30,32c30,31
< # HDR->SDR
< hdr-compute-peak=yes
< tone-mapping=hable
---
> # HDR
> target-colorspace-hint=yes

[DeadNews]

Also needed

• https://aur.archlinux.org/packages/vk-hdr-layer-kwin6-git

(+) Video --vid=1 (*) (vp9 3840x2160 59.940fps)
(+) Audio --aid=1 --alang=eng (*) (opus 2ch 48000Hz)
[HDR Layer] Created HDR surface
[HDR Layer] Enabling format: 64 colorspace: 1000104008
[HDR Layer] Enabling format: 58 colorspace: 1000104008
[HDR Layer] Enabling format: 97 colorspace: 1000104002
[HDR Layer] Enabling format: 97 colorspace: 1000104005
[HDR Layer] Enabling format: 64 colorspace: 1000104008
[HDR Layer] Enabling format: 58 colorspace: 1000104008
[HDR Layer] Enabling format: 97 colorspace: 1000104002
[HDR Layer] Enabling format: 97 colorspace: 1000104005
[auto_profiles] Applying auto profile: 4k60fps
AO: [pipewire] 48000Hz stereo 2ch floatp
VO: [gpu-next] 3840x2160 yuv420p10
[HDR Layer] Creating swapchain for id: 5 - format: VK_FORMAT_A2B10G10R10_UNORM_PACK32 - colorspace: VK_COLOR_SPACE_SRGB_NONLINEAR_KHR
[HDR Layer] Creating swapchain for id: 5 - format: VK_FORMAT_A2B10G10R10_UNORM_PACK32 - colorspace: VK_COLOR_SPACE_HDR10_ST2084_EXT
[HDR Layer] VkHdrMetadataEXT: mastering luminance min 0.001000 nits, max 600.000000 nits
[HDR Layer] VkHdrMetadataEXT: maxContentLightLevel 0.000000 nits
[HDR Layer] VkHdrMetadataEXT: maxFrameAverageLightLevel 0.000000 nits
[HDR Layer] Creating swapchain for id: 5 - format: VK_FORMAT_A2B10G10R10_UNORM_PACK32 - colorspace: VK_COLOR_SPACE_HDR10_ST2084_EXT
[HDR Layer] VkHdrMetadataEXT: mastering luminance min 0.001000 nits, max 600.000000 nits
[HDR Layer] VkHdrMetadataEXT: maxContentLightLevel 0.000000 nits
[HDR Layer] VkHdrMetadataEXT: maxFrameAverageLightLevel 0.000000 nits

Conclusion

It works, but it doesn't seem to be working properly for me.