cf11021a8c
There will be another caller in a later commit.
v2:
* Bump xwl_window_buffer->refcnt in xwl_window_swap_pixmap, to prevent
xwl_window_set_pixmap from disposing of it.
v3:
* Go back to bumping xwl_window_buffer->refcnt in
xwl_window_buffers_get_pixmap. xwl_window_set_pixmap should no longer
dispose of it now that xwl_glamor_gbm_create_pixmap_for_window is
fixed, and xwl_window_swap_pixmap forgot to bump it if
xwl_window_buffer_get_available returned NULL.
v4:
* Unlink xwl_window_buffer from xwl_window->window_buffers_available
before calling xwl_window_set_pixmap in xwl_window_swap_pixmap, or
that might dispose of it.
v5:
* xwl_window_swap_pixmap does everything xwl_window_buffer_get_available
did before, except for just using the window pixmap if
!xwl_glamor_needs_n_buffering.
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1314>
(cherry picked from commit 44527c2549)
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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https://lists.freedesktop.org/mailman/listinfo/xorg
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