8c8cd0ad50
Otherwise the pixmap is too small for a window with non-0 border width. Fixes:9730fb64ea("xwayland: Add create_pixmap_for_window() to GBM backend") Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1314> (cherry picked from commit913631071e)
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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