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blog post: cool little tech art thing I did a while ago on Sleight of Hand. lights that dispel volumetric smoke, with occlusion www.joewintergreen.com/tech-art-thi...

This is neat. It doesn't actually have anything to do with the light itself, so it's just a general purpose "clear line-of-sight fog within radius." It could work just as well for, say, an explosion cutting through smoke or helicopter rotor wash, right?