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For the last year I've been playing lots of classic DOOM. DOOM has one feature that I started to appreciate ever since I learned about it, which is the ability to roll up brightness very high. This is what doom looks like when I play it:
I miss this thing in lots of other games. Recently I've been trying to get into Deus Ex (2000) via wine but it was so dark I couldn't see shit. Maybe it's my monitor that's not very powerful or my environment that's pretty bright by itself, but I feel just the simple ability to gamma correct any game or the whole desktop would solve this problem for me.
Do you know any such util that works on wayland?
I maxed what I can but still too dark. I mean maybe what I want is going to break the "intended look" of different games, but I don't want them to be physically painful for me to play.
KDE has Gamma settings in the Display & Monitor area of system settings. So what you're looking for is possible.
Only on X11, not on Wayland (as of 6.4).
Ah. Guess the steam deck must still run X11? That's currently my primary computer, so I haven't had to learn about/deal with X11 vs Wayland quite just yet.
Yes, the desktop mode uses Plasma on X11 by default. It can be changed, but X11 is still perfectly functional and Wayland doesn't have a lot of advantages in that particular use case.
Big Picture (and the games launched from it) uses an entirely different compositor called GameScope, which is developed by Valve and is meant specifically for games or other single-window applications. It can also be used in a nested setup inside another compositor.
If there's just no system settings, you may try looking into mods, or learning how to manually edit the config file yourself?
It looks like for windows you can use opengl or a special launcher. I'm not sure how different it'll be for you, but seems to be a common problem so someone has likely found a solution somewhere.
Not sure if Lemmy is big enough for someone to come tell you, but whenever you figure it out maybe edit you post with the fix so this stuff can start building up here.
For Deus Ex in particular there's this https://www.cwdohnal.com/utglr/ Even though it has GammaOffset variable in config I never got it to work (nothing happens).