PBORenderToVertexArray

Last Revision:	Version 1.1, 2006-10-02 Minor revision to the OpenGL extension checking code. (Full Revision History)
Build Requirements:	Mac OS X v.10.4.3 and Xcode 2.3
Runtime Requirements:	Mac OS X v.10.4.3 and a graphics card that supports the FBO and PBO extensions

This sample demonstrates render-to-vertex-array using FBO, PBO, and VBO. A VBO is allocated with storage and indices for an N x N mesh. Then content is drawn into an N x N texture attached to an FBO. The pixel data is copied from the FBO into the VBO, by binding a PBO to the VBO id and calling glReadPixels. Now the pixel RGBA colors can be used as vertex XYZW data.