this post was submitted on 26 May 2025
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If you ever get the opportunity, try out HDR ITM tone mapping (essentially a HDR upconversion thing you can do with Gamescope on Linux) playing Persona 3 Reload on a QD OLED monitor (for that extra brightness) in a dark room. Even though it's not even a native HDR game, with ITM it looks so good, especially because it's a game with a lot of dark graphics mixed in with super bright. The text pops, and combat is next-level.
"HDR Inverse Tone Mapping tone mapping"
Oh boy, I should have caught that. Ironic, considering saying things like "ATM machine" is a pet peeve of mine.
I donβt know if I want my text to be that bright TBH.
I have a 1000 nits monitor and IMO it looks best with things like stars in a night sky or lights in a dark cave.
When it gets too much of the screen bright at once it hurts my eyes. Sometimes that happens when playing Destiny 2, which generally has a pretty good HDR implementation, but when too many explosions happen at once it gets overwhelming.
Why does it make oranges look aggressively red though?
I haven't experienced issues with oranges on my setup (AW3423DWF, 7900 XTX). Perhaps it is to do with your hardware?
It happens on several monitors and my TV, and it happens with both my desktop and my steam deck, even with rhe HDR saturation set to "SDR." It's like the red channel gets crushed upwards.
Maybe its a configuration issue on my part? Or maybe its the panel brand? I do have a lot of LG screens, but then you'd think it wouldn't be an issue elsewhere either...
Any ideas are welcome though, hoping to fix it so the family and I can start enjoying HDR more.
Are you using tone mapping through the Steam UI (I think the Deck has its own controls for HDR inverse tone mapping) or through the command line options you can use for games? If you are using the UI, it might be worth using the command line toggles instead as maybe the UI is setting some wrong settings. If it helps, here is the set of command line options I use on my system (modify brightness, refresh rate, and resolution to fit your display)
DXVK_HDR=1 ENABLE_HDR_WSI=1 gamescope -f -r 165 -W 3440 -H 1440 --adaptive-sync --hdr-enabled --hdr-itm-enable --hdr-itm-sdr-nits 350 --hdr-sdr-content-nits 800 --hdr-itm-target-nits 1000 gamemoderun -- %command%. In addition, it might be worth looking through the display settings to see if it's in any sort of colour boosting HDR modes - my Alienware had to be set to "HDR Peak 1000" for colours to look as they should, as by default it messes around with things a bit. If you can as well, try some other devices that can output HDR (like a game console or Blu Ray player or something) to see if it's making those outputs look a bit red too - if so, it's to do with the display, and if not it's a configuration issue.I have not started using the launch flags yet, I'll have to give those a try. Wonder if it's possible to set those nits values globally per display in a config file somewhere?
As far as I know, no. I guess it's not exactly a good idea globally, as some games sometimes need some changes. For example there's one or two that don't like ITM and will have display corruption (at least last time I tested, possibly fixed now), and I have to use some extra flags to get TF2's mouse controls working in Gamescope.