[Algorithms] water caustics

[Charles B. <cb...@cb...>]

It just occurred to me that this could probably
be hacked pretty convincingly using projective
texturing.  Any object underwater would just get
an extra additive pass from a projective texture
which had some fake caustic lines in it.  If you
wanted to be fancy, you could even use the
heightmap of your water to draw some caustic
lines that resembled the crests of the wave
surface; totally incorrect, but probably great
looking for games.

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Charles Bloom           www.cbloom.com