this post was submitted on 14 Mar 2024
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As I understand it, functionality like VRR is provided by the DRM driver in the kernel, not the compositor. Hence my question.
LOL that's exactly what they do.
They do not need to take the desktop environment into account. They ask for a window and they render into it. They'll ask for a window using either the OpenGL or Vulcan API. Both those APIs abstract the windowing system away, the desktop is entirely irrelevant. Under Wayland, the compositor requests a buffer from the kernel, provides it to the game and then manages where on the desktop that buffer is rendered. The game's rendering is done directly (talking to the kernel and GPU driver) without going anywhere near either the compositor or the desktop environment.
The desktop environment means nothing when it comes to gaming. Except in so far as it may provide a GUI to configure aspects of the system that would otherwise be configured on the comand line or, for example by interacting with /sys.
This is why I asked what OP meant when they said KDE "supports" gaming better. Seems ridiculous. The desktop environment is not involved in game rendering. It has no impact. I'm mystified as to why people think it does.
That's what I said. You're repeating what I said back to me.