7cdcdfea08
Adds a -force-xrandr-emulation cmdline switch that always exposes extra modes when viewporter isn't exposed by the Wayland compositor. Having the additional modes exposed by the X server is important for games to function and be configured Compositors, such as Gamescope (the compositor for Steam Deck), support only a single window that is rendered in the centre of the screen that is scaled up to fill the screen by the compositor based on some user scaling settings. Exposing viewporter, wouldn't make sense here, and could mislead native Wayland clients, so exposing dummy modesets in X is preferred here. Signed-off-by: Joshua Ashton <joshua@froggi.es> Reviewed-by: Olivier Fourdan <ofourdan@redhat.com>
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server
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