[Request] Support for the Vulkan AMD anti-lag extension in Flatpak Mesa runtime

Requests
1

AMD Anti-Lag support was introduced in Mesa 25.3 via the VK_AMD_anti_lag extension (Vulkan layer). While this can be enabled with the ENABLE_LAYER_MESA_ANTI_LAG=1 environment variable, it doesn’t seem to work within the Flatpak sandbox, even though the current Flatpak Mesa runtime (v25.3.5) should technically support it.

It’s possible that this specific Vulkan layer isn’t being exported or included in the Flatpak Mesa build. Could this be added or exposed similarly to how other Vulkan layers are handled in the runtime? I’ve seen a discussion on Reddit suggesting this might be the case.

Many modern titles that run on Linux—such as Counter-Strike 2, Dota 2, Marvel Rivals, Arc Riders, Horizon Zero Dawn Remastered and others—support this technology. Enabling it could improve input latency for AMD users running these games via Flatpak.

2

This seems to have been merged recently into the Freedesktop SDK:

If your Mesa Flatpak is up to date, it should be available.

3

Thanks for the information. It’s already fixed then. But it’s not working yet; my Flatpak applications and runtimes are up to date. Steam is using Mesa 25.3.5 right now, so I guess I’ll have to wait for a new release of the Freedesktop SDK.