47c4e38e50
Since commitd370f1e58, Xwayland can optionally be started rootful and fullscreen. To do so, it will setup a viewport to scale the root window to match the size of the output. However, if the rootful Xwayland window receives an xdg-surface configure event before the output definition is complete, as with e.g. the labwc Wayland compositor, we might end up trying to setup a viewport with a destination size of 0x0 which is a protocol violation, and that kills Xwayland. To avoid that issue, only setup the viewport if the output size is meaningful. Also, please note that once the output definition is complete, i.e. when the "done" event is eventually received, we shall recompute the size for fullscreen again, hence achieving the desired fullscreen state. Fixes:d370f1e58- xwayland: add fullscreen mode for rootful Closes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1717 Signed-off-by: Olivier Fourdan <ofourdan@redhat.com> Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1621> (cherry picked from commit66f5e7e96a)
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.
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