My first thought on reading is this is essentially (at least in spirit) mipmapping[1] applied to his 2D (2.5D?) engine. 1. http://en.wikipedia.org/wiki/Mipmap

My first thought on reading is this is essentially (at least in spirit) mipmapping[1] applied to his 2D (2.5D?) engine. 1. http://en.wikipedia.org/wiki/Mipmap http://en.wikipedia.org/wiki/Mipmap