2014-05-11 "A Comparative Study of Screen-Space Ambient Occlusion Methods" GAME_GFX CG pdf: http://frederikaalund.com/wp-content/uploads/2013/05/A-Comparative-Study-of-Screen-Space-Ambient-Occlusion-Methods.pdf Scalable Ambient Obscurance http://graphics.cs.williams.edu/papers/SAOHPG12/ Screen-Space Far-Field Ambient Obscurance http://wili.cc/research/ffao/