libXcomposite provides an X Window System client interface to the Composite
extension to the X protocol.
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The Composite extension allows clients called compositing managers to control
the final drawing of the screen. Rendering is done into an off-screen buffer.
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More information about X.Org can be found at:
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This module can be found at
git://anongit.freedesktop.org/git/xorg/lib/libXcomposite