Variable Refresh Rate
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Should we make the output commit fail if VRR can't be enabled? We don't know when VRR is indeed enabled, but in some cases we know when it fails. We still don't have support for test-only commits, so dealing with failures is going to be annoying for compositors. -
Sway implementation
Fixes: https://github.com/swaywm/wlroots/issues/1406
Depends on: https://github.com/swaywm/wlroots/pull/2046
Future work: Wayland protocol to opt-in to VRR.