A small application that watches for processes belonging to Steam games, and enables Feral's gamemode for those processes.
Detection relies the "STEAM_GAME" custom X property, which should be set by the Steam overlay, but appears to be set even when the overlay is disabled.
It only works on X windows, it will not work for Wayland windows, though it might for XWayland (untested.)
It uses D-Bus and X11. The required client libs should be present by default on any desktop install.
To install gamemode see its README.
Tested with Rust 1.46.0. It requires cargo and rustc.
The Rust project recommends Rustup for installation, but your distribution's Rust packages will work as well if they have the right versions.
On Debian and derivatives, installing the cargo package will pull all the necessary packages as dependencies.
Building the Rust D-Bus crate requires the dev package, eg. libdbus-1-dev on Debian and derivatives.
cargo build --releaseThe output binary can be found in the target/release subdirectory.
Requires docker >= 18.09
./build.sh dockerThe output binary can be found in the docker_target subdirectory.
Note the docker build will link against Debian buster's D-Bus client libraries. The resulting binary will probably work fine in Debian and derivatives, but to guarantee compatiblity you should build locally to link against your distribution's libdbus.
(D-Bus's ABI policy provides backwards compatiblity without relinking, but I have not put this policy to the test, and distributions are more than capable of ruining upstream's ABI compatibility.)
GPLv3.
- Wayland support
- Detect games from other launchers
- Other ways of detecting game processes without relying on launchers