Re: [Algorithms] water caustics

[Stephen J B. <sj...@li...>]

On Thu, 3 Aug 2000, Charles Bloom wrote:

> 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.
 
There is a nice demo of exactly that - called 'Atlantis'
IIRC.  You should find it one one of the OpenGL sites
out there.  It has whales and sharks swimming around
in a blue fog with projective texture caustics.

It looks pretty good - although a better choice of
caustic texture could have been made IMHO.

Steve Baker                      (817)619-2657 (Vox/Vox-Mail)
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