Quad Buffered Stereo

A simple OpenGL render to explore how Quad Buffered Stereo cards like Nvidia's Quadro 6000 work

Inspired by this example

http://www.gali-3d.com/archive/articles/StereoOpenGL/StereoscopicOpenGLTutorial.php

I updated the code presented in the previous example to fit the quad buffered stereo nvidia cards running the CAVE.