Not very new but still interesting. Read also about the origin of it here: * http://www.beyond3d.com/content/articles/8/ http://www.beyond3d.com/content/articl

Not very new but still interesting. Read also about the origin of it here: * http://www.beyond3d.com/content/articles/8/ http://www.beyond3d.com/content/articles/8/ * http://www.beyond3d.com/content/articles/15/ http://www.beyond3d.com/content/articles/15/