07fa12ad1d
There's no real benefit to using GLX, and the other DDXes are using EGL already, so let's converge on EGL so we can concentrate the fixes in one place. We go to some effort to avoid being the thing that requires libX11 here. We prefer EGL_EXT_platform_xcb over _x11, and if forced to use the latter we'll ask the dynamic linker for XGetXCBConnection and XOpenDisplay rather than link against xlib stuff ourselves. Xephyr is now a pure XCB application if it can be. Reviewed-by: Emma Anholt <emma@anholt.net>
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
All questions regarding this software should be directed at the Xorg mailing list:
https://lists.freedesktop.org/mailman/listinfo/xorg
The primary development code repository can be found at:
https://gitlab.freedesktop.org/xorg/xserver
For patch submission instructions, see:
https://www.x.org/wiki/Development/Documentation/SubmittingPatches
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