• http://www.lysator.liu.se/~kand/caustics/
  Caustics can be described as the light pattern you see at the bottom of a pool on a sunny day. This tool will let you render such caustics patterns. The rendered images can be animated and used for realtime graphics and are tileable in both space and tim
  in Public bookmarks with 3d graphic open_source software texturing by 2 users

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