hdr with cm=hdr or cm_fs_passthrough doesn't seem to work

[nergdron]

so, since the new hdr options got put in (and experimental:xx_color_management_v4 got dropped as being the recommended way to do hdr I guess?), I've been trying to get hdr working again in hyprland, but to no avail.

regardless of the options I use around cm in my monitors config, or the render options around color management, I can no longer get either mpv or (more importantly) gamescope to detect hdr support and actually render things with hdr.

notably, when I change the monitor config to cm=hdr or cm=hdredid, I can see the monitor correctly change to an hdr mode, and render the window borders and mouse cursor way too bright (hdr bugs reported by others). but even then, these apps do not see hdr support, and refuse to render in hdr.

I'm on arch, amdgpu (rdna 2), LTS kernel, I'm not really sure what magical sauce I'm missing to make this work. my current configuration around this as of the last combo I tested looks like this, with no explicit cm config on the monitor:

render {
  direct_scanout = 1
  cm_fs_passthrough = 1
}
experimental {
  xx_color_management_v4 = true
}
env = DXVK_HDR,1
env = ENABLE_HDR_WSI,1

suggestions about what dumb thing I'm probably doing wrong are greatly appreciated! 😅

[LionHeartP]

How are you launching the game? Using gamescope? Using wine-wayland?

[nergdron]

oh yeah good question. primarily I'm launching things through steam, using a custom commandline to run it with gamescope. for instance, here's what I use to run Tetris Effect. it works great in HDR mode on my steam deck, but no HDR under hyprland:

STEAM_DECK=0 DXVK_HDR=1 gamescope -f -W 3840 -H 2160 --hdr-enabled -- %command% -d3d12

I'm not running mpv with any special options, under KDE it works just fine in HDR mode without any, but in hyprland, just SDR.

[LionHeartP]

Here it works perfectly fine without touching the cm fS passthrough nor setting the monitor in HDR mode.

I literally run a game with gamescope and it'll automatically modeset to HDR as needed.

[svenstaro]

@LionHeartP could you elaborate on your relevant Hyprland settings, env vars, and gamescope flags in Steam?

[LionHeartP]

There is indeed an issue with latest gamescope. Solution that worked for me in #9064

[nergdron]

oh damn, good sleuthing. I'll try this week to rebuild gamescope the same way you did.

[ibrokemypie]

I've also been unable to get HDR working on hyprland, neither on MPV or on wine with the wayland driver. No combination of options has got it working so far

[nergdron]

yeah, seems like support is broken in hyprland right now, ticket #9064 @LionHeartP linked to should track it.

[axelheer]

I fumbled around with this one too now. Auto HDR for gaming doesn't seem to work, but enabling HDR for everything and the game seems to suddenly recognize it...

hyprland.config

monitor = DP-1, 3840x2160@144, 0x0, 1.5, vrr, 2, bitdepth, 10, cm, hdr, sdrbrightness, 1.2, sdrsaturation, 1.05

render {
  direct_scanout = 1
  cm_fs_passthrough = 1
}

experimental {
  xx_color_management_v4 = true
}

xwayland {
  force_zero_scaling = true
}

steam launch options

ENABLE_HDR_WSI=1 DXVK_HDR=1 gamemoderun gamescope -f -H 2160 --adaptive-sync --hdr-enabled --force-grab-cursor -- %command%

• without setting monitor to HDR for everything the game recognizes HDR, but looks very washed out and the monitor does report SDR (the game seems to use a wide color range, which does die somehow on its way to the physical monitor)
• without ENABLE_HDR_WSI / DXVK_HDR the monitor reports HDR, but the game doesn't recognize it and uses SDR colors (the game looks just a bit brighter, but not that much HDR like)
• using gamescope or not doesn't seem to make any difference (?)
• i'm not sure if the render / experimental do have any impact (?)