Pixar Film Production show off how they use Linux and OpenGL, open sourced a major tool
This isn't exactly related to gaming, but Pixar Film Production have shown off their work using Linux + OpenGL in animating films. They say it can be used for games too and it's now open source.
How to setup OpenMW for modern Morrowind on Linux / SteamOS and Steam Deck
How to install Hollow Knight: Silksong mods on Linux, SteamOS and Steam Deck