cm: add ICC profile loading

[vaxerski]

Adds loading of icc profiles for the properties we support

ref #9064

[vaxerski]

@fufexan can we get nix

[vaxerski]

can you guys let me know if this works well? I have done very limited testing.

[Flat]

can you guys let me know if this works well? I have done very limited testing.

Hyprland 0.52.0 built from branch icc-support at commit a3520d917afdbbd084c76a8daa8ce1d6c02811f5 clean (cm: add ICC profile loading).
Date: Tue Dec 23 11:06:26 2025
Tag: v0.52.0-183-ga3520d91, commits: 6742

Libraries:
Hyprgraphics: built against 0.4.0, system has 0.4.0
Hyprutils: built against 0.11.0, system has 0.11.0
Hyprcursor: built against 0.1.13, system has 0.1.13

Hyprlang: built against 0.6.7, system has 0.6.7
Aquamarine: built against 0.10.0, system has 0.10.0

Do not see anything in the logs showing it is loading the ICC profile, or rather nothing icc at all. What am I doing wrong there?

monitorv2 {
    output = DP-2
    mode = [email protected]
    scale = 1
    position = 0x0
    bitdepth = 10
    cm = dcip3
    sdr_min_luminance = 0.0005
    sdr_max_luminance = 250
    icc = /home/flat/.config/icc/dell-icc-profile.icm
}
monitorv2 {
    output = DP-1
    mode = [email protected]
    scale = 1
    position = auto-up
    bitdepth = 10
    cm = dcip3
    sdr_min_luminance = 0.005
    sdr_max_luminance = 250
    icc = /home/flat/.config/icc/dell-icc-profile.icm
}

hyprland.log

[vaxerski]

oh oops, I think I forgot v2

[vaxerski]

my bad should work now

[vaxerski]

it should dump what we were able to decode from the icc into the log like so if it loaded successfully

[Flat]

Yup, it does attempt to load now. Unfortunately looks like the only ICC profile for my monitor is split-trc, so I won't be able to assist much with testing here.

failed: Hyprland cannot represent split-trc profiles yet

[vaxerski]

I've added logging of the trc to the debug output, can you post the icc data dump here?

[Flat]

Sure, here you go!
iccdump.log

[vaxerski]

thanks, despite xmas :P

[vaxerski]

This should work. I've loaded my ICC profile and it does seem to change the colors on my panel a bit, but without a colorimeter I have no way of verifying if it's correct. Please load your ICC and let me know.

[Flat]

It does seem to change the colors. I've ordered a colorimeter to verify though, should have it within a week.

[vaxerski]

talk about dedication. I do think its wrong, sway's is different.

[vaxerski]

@UjinT34 would you mind checking the LUT shader changes? I'm quite sure I am doing something wrong there. Shadows are a tad too bright I think.

Can't say for sure without a colorimeter but they do look a bit flat and weird.