Steam-Deck-Guide

Gaming On The Steam Deck

For HDR to work on compatible displays (eg. OLED Steam Deck internal screen) these are the requirements:
- Play in Gaming Mode (HDR only works on Wayland, Desktop Mode uses X11)
- Game supports HDR and is enabled in the settings
- Game is set to fullscreen mode
- Helpful commands:
  - For some games that run outside of the Steam library - DXVK_HDR=1 PROTON_ENABLE_AMD_AGS=1 %command%
  - For certain games SteamDeck=0 %command% and -dx12 or -d3d12
Some information here is copied from and additional useful things can be in this guide by u/mytrixx on r/SteamDeck regarding HDR
Two-tone slider explanation:
- First part adjusts the brightness via the display hardware which changes how strongly each pixel lights up.
- Second half adjusts the brightness via digital gain on the image we send to the display.
- Source: Valve Employee - Slightly edited for better grammar / punctuation