X11

• X Window System(commonly X11 or X)

Architecture

• X Window System protocols and architecture
• X Window System Architecture Overview HOWTO

XRender

• XRender
  • an X Window System extension to implement Porter-Duff image compositing(alpha compositing) in the X server
  • At present it is primarily used to implement antialiased fonts, but is expected to be used to implement drop shadows and translucency.

• The X Rendering Extension Version 0.11, 0.15
• A New Rendering Model for X

Server Implementation

• X.Org Server
  • the official reference implementation
• XFree86
  • XF68_FBDev
  • X Virtual Framebuffer(XVfb)
  • Xvesa - VESA Bios Extensions tiny X server
• Mac OS X
  • XDarwin
    • Before the introduction of Apple's X11.app, XDarwin was the only X11 server available for OS X
  • X11.app
    • Apple Computer's implementation of the X Window System for Mac OS X
• Cygwin/X
  • an implementation of the X Window System that runs under Microsoft Windows
• smallX(formerly tinyX)
  • The KDrive Tiny X Server
• XDirectFB
  • a rootless X Server using DirectFB Windows for X11 toplevel windows
• Xquartz
  • develop a version of the X.org X Window System that runs on Mac OS X

client library

• Xlib

Stacking Window Manager

• Comparison of X window managers
• Blackbox
• Fluxbox
• Matchbox

Composite Window Manager

• Compiz
  • Compiz will only run on Unix-Like operating systems that run an X Server that provides the GLX_EXT_texture_from_pixmap extension.

Drawable

• A drawable is anything you can draw graphics on.

• Pixmap
  • off-screen buffer
  • Using a pixmap as a buffer allows you to rapidly update the screen without repeating a series of primitive drawing operations.
  • Pixmaps are also good to store image data loaded from disk, such as icons and logos. You can then copy the image to a window.

• Window
  • on the screen

• Drawables and Pixmaps