Valve continues to develop the Gamescope composite server (formerly known as steamcompmgr), which uses the Wayland protocol and is used in the SteamOS 3 operating system. on high resolution screens.
SteamOS 3 is based on Arch Linux, ships with a read-only root file system, supports Flatpak packages, and uses the PipeWire media server. Initially, SteamOS 3 is being developed for the Steam Deck game console, but Valve also promises that this OS can be downloaded separately on any computer.
Gamescope is positioned as a specialized composite server for running games, capable of running on top of other desktop environments and providing a virtual screen or a separate isolated instance of Xwayland for games using the X11 protocol (a separate refresh rate and resolution can be configured in the virtual screen). Performance improvement is achieved through the organization of output to the screen through a direct call to DRM / KMS without copying data to intermediate buffers, as well as through the use of the means provided in the Vulkan API for asynchronous computations.
Source: opennet.ru