How to play OpenGL based games with full 3D acceleration on XGL/Compiz

ubuntuforums.org — This post to the Ubuntu forums details how to create a nested X server in order to run 3D games at full performance under XGL/Compiz. This not specific to Ubuntu and should work for any distro. At first glance the guide may appear complicated, However most of it is merely copy-and-pasting. If followed to the letter, The guide is very simple. Enjoy!