Updated (2011/01/16) – Please note that this article covers SIO2 v1.4, which was the original free/low-cost version of SIO2. This article does not cover SIO2 v2.x.
SIO2 is an interesting and useful library for building 3D OpenGL ES applications under Apple’s iOS. While not strictly object-oriented like Apple’s Cocoa, much of the OpenGL functionality is . . . → Read More: Adding SIO2 to an Existing Xcode iOS Project