Asahi LinuxGPU acceleration support for Flatpak is finally coming to Fedora Asahi Remix! Try it out today:
sudo dnf copr enable @asahi/flatpak
sudo dnf install mesa-asahi-23.08-flatpak mesa-asahi-22.08-flatpak
Then launch any Flatpak from Flathub that uses the GPU.
(Note: supported on the FDO 22.08 and 23.08 runtimes only, which covers the vast majority of Flatpaks on Flathub. Flatpaks on the Fedora flatpak repo are not yet supported, as the special Fedora runtime has an incorrect extension config we can't use as-is, and would need separate Mesa builds once that is resolved.)
Fedora Flatpak Runtime GL extension config is missing versions, makes it unusable for non-Nvidia drivers (#31) · Issues · fedora / Special Interest Groups (SIGs) / Fedora Flatpak SIG / Fedora Flatpaks · GitLab
For Fedora Asahi Remix we are now shipping a host Flatpak GL extension for the Freedesktop runtime with our pre-release downstream Mesa drivers, to make Flatpaks work...
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Jonah 
Seshan "Seshpenguin"