X Window extensions

GLX (initialism for "OpenGL Extension to the X Window System") is an extension to the X Window System core protocol providing an interface between OpenGL and the X Window System as well as extensions to OpenGL itself. It enables programs wishing to use OpenGL to do so within a window provided by the X Window System. GLX distinguishes two "states": indirect state and direct state.

thumb|right|250px|Four Head Xinerama thumb|right|250px|Modern Xinerama example Xinerama is an extension to the X Window System that enables X applications and window managers to use two or more physical displays as one large virtual display.

Wikipedia overview article

Video Decode and Presentation API for Unix (VDPAU) is a royalty-free application programming interface (API) as well as its implementation as free and open-source library () distributed under the MIT License. VDPAU is also supported by Nvidia.

x Window extension