gamescope

Wayland gaming micro-compositor

TLDR

Run a program with gamescope

$ gamescope -- [program]

Run a game with gamescope through Steam

$ gamescope -- %command%

Upscale a 720p game to 1440p with integer scaling

$ gamescope -h 720 -H 1440 -S integer -- [command]

Limit a vsynced game to 30 FPS

$ gamescope -r 30 -- [command]

Launch Steam in Big Picture Mode with gamescope integration

$ gamescope -e -- /usr/bin/steam -tenfoot

Specify which display to prefer

$ gamescope -O [HDMI-A-1|DP-3|...] -- [program]

Toggle fullscreen

$ Super+f

Display help

$ gamescope --help

SYNOPSIS

gamescope [options] -- command [arguments]

gamescope is a Wayland micro-compositor developed by Valve for gaming. It acts as an intermediary layer between games and the display server, providing features like resolution scaling, frame limiting, HDR support, and improved game compatibility.
Key features include FSR (FidelityFX Super Resolution) upscaling, integer scaling for retro games, independent refresh rate control, and seamless fullscreen management. It's the basis for the Steam Deck's gaming mode compositor.
When used with Steam (-e flag), it integrates directly with Steam's overlay and game management features.

PARAMETERS

-h, --nested-height HEIGHT

Set internal (nested) resolution height

-H, --output-height HEIGHT

Set output resolution height

-w, --nested-width WIDTH

Set internal (nested) resolution width

-W, --output-width WIDTH

Set output resolution width

-r, --nested-refresh RATE

Set internal refresh rate (FPS limit for vsync games)

-S, --scaler SCALER

Scaling filter: auto, integer, fit, fill, stretch

-e, --steam

Enable Steam integration mode

-O, --prefer-output OUTPUT

Preferred display output

-f, --fullscreen

Start in fullscreen mode

-b, --borderless

Start in borderless windowed mode

--hdr-enabled

Enable HDR output

KEYBOARD SHORTCUTS

Super+F - Toggle fullscreen
Super+S - Take screenshot
Super+G - Toggle FPS limiter

CAVEATS

Requires Vulkan support. Some games may have compatibility issues. HDR support requires appropriate hardware and display. Performance overhead is minimal but present.

HISTORY

gamescope was developed by Valve Software and first released in 2020. It was created primarily for the Steam Deck handheld gaming PC, providing the foundation for SteamOS 3.0's gaming compositor. The project evolved from earlier work on the steamcompmgr compositor.