POV-Ray : Newsgroups : povray.advanced-users : How to create realistic caustics? : Re: How to create realistic caustics? Server Time
1 Apr 2023 13:51:32 EDT (-0400)
  Re: How to create realistic caustics?  
From: Alain Martel
Date: 7 Mar 2022 10:34:22
Message: <622625fe$1@news.povray.org>
Le 2022-03-06 à 18:11,  a écrit :
> Hi,
> I am currently working on a pool scene and would like to render realistic
> cautics there.
> Something like this:
> https://community.foundry.com/discuss/post/1221838/content/130646
> This should also be animated, so the caustics change realistically.
> See the following video:
> https://www.youtube.com/watch?v=Popg7ej4AUU (Pool first at minute 4:33)
> I tried it with photons, but this is not possible because of the enormous render
> time (there is also a larger mesh object in the scene).
> Secondly, I try it with an overlaid texture, based on a partially-transparent
> crackle.
> But the result is pretty modest in both cases.
> Attached an example with faked caustics of my current implementation (with
> bozo).
> Does anyone have a tip how to get this as realistic as possible ?
In your case, using the caustics feature may be good enough.
The drawback is that the effect in independent from the distance, but, 
especially if seen from above the surface, it may not even be obvious.
This renders a LOT faster than using photons.

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