As the title asks, how does one actually use HDR for games after upgrading to Plasma 6?

This was the feature I was most excited about, and I can hit the HDR button on my display configuration and it looks like the desktop is going into HDR mode, but so far I have had zero luck enabling the HDR feature in games. Every game I’ve tried had the HDR toggle disabled with no way to enable it.

I am running these games under Proton and I’ve tried both 8-GE and 9 Beta. Any tips?

  • thadah@lemmy.worldEnglish
    0·
    9 months ago

    Hi! To enable HDR in most games you will need to set your game in fullscreen. Windowed or Borderless won’t allow you to use HDR functionality.

    You’ll also need to use the DXVK_HDR=1 %command% startup variable in steam to enable HDR in any Proton game. Proton 8 and 9 should support HDR without issuez although there are some games that might need additional configuration.

    If you use an NVIDIA card, you might need to enable NVAPI with DXVK_ENABLE_NVAPI=1

    Happy gaming! :D

    • Lojcs@lemm.eeEnglish
      0·
      9 months ago

      This only lets you enable hdr in game. Since proton runs under xwayland the hdr info won’t reach the compositor.

        • Lojcs@lemm.eeEnglish
          0·
          9 months ago

          Gamescope supports hdr with --hdr-enabled --hdr-debug-force-output flags and running the game under it doesn’t require xwayland in my understanding. It doesn’t support nvidia though

          • million@lemmy.worldOPEnglish
            0·
            9 months ago

            So what is the benefit of KDE’s HDR support at that? Could you do something similar under Gnome and get HDR support in games?

            • Lojcs@lemm.eeEnglish
              0·
              9 months ago

              If gnome supports hdr too you can. Kde’s support is a part of the stack that needs to support hdr for it to work. The programs and drivers can speak hdr all they want but if the compositor (kde) doesn’t understand and relay the info to the monitor it won’t work.

    • zelifcam@lemmy.worldEnglish
      0·
      9 months ago

      NVIDIA Latest Drivers:

      file: /etc/modprobe.d/nvidia.conf

      options nvidia NVreg_RegistryDwords="PowerMizerEnable=0x1; PerfLevelSrc=0x2222; PowerMizerLevel=0x3; PowerMizerDefault=0x3; PowerMizerDefaultAC=0x3"

      These can also be set under modprobe, but I was troubleshooting a while back and it was easier to edit them this way before booting. So here’s my kernel parameters I have set:

      nvidia-drm.modeset=1 nvidia-modeset.hdmi_deepcolor=1 nvidia-drm.fbdev=1 nvidia.NVreg_TemporaryFilePath=/var/tmp

      https://lemmy.world/comment/8500390