The best advertiser for Linux is Microsoft.

They did not outright declined it. They policy is not to engage wt commercial entities. Therefore, there is no contract or agreement of any kind. Nevertheless, Solvo may just voluntary donate to the project, for the PR.

Mesa comes as separate flatpaks which is hidden in the GUI, and is automatically install when you install a flatpak. The system can have multiple versions of the driver installed. When Steam is ready to use a newer Mesa version, it will do it automatically.

Mangohud, on the other hand, is a flatpak you need to install manually via the command line. You should follow the instruction on their Github page for that.

P.S: In case you like a GUI for things. You should install Flatseal, which provide a GUI for configuring flatpaks.

Apparently, the CAD software Ondsel is also not compatible with the mesa’s implementation; and it would just crash right after the boot.

It is neat to see that materials in the same polymer family can have such a large difference in properties.