Not exactly. If you browse down that thread and read the dissertation and the accompanying slides, you see that that demo goes well beyond positioning a rectang

Not exactly. If you browse down that thread and read the dissertation and the accompanying slides, you see that that demo goes well beyond positioning a rectangle (texture) in 3D space (which we already do at famo.us). That guy went on to explore cuboids in addition to rectangles as a basic windowing primitive.