BMRT handles reflective caustics reasonably well.  It doesn't do
refractive caustics at all.

-Mike

Margus Ramst wrote:
> 
> Daren Scot Wilson wrote in message <36B2FDD5.C451AD58@pipeline.com>...
> >Lark wrote:
> >> ... But what I really want the lense for is to split up a
> >> beam of light. ...
> >
> >People are working on this.
> >
> >There's a macro by Margus Ramst in  povray.text.scene-files, with an
> >example in povray.binaries.images.
> >
> 
> My macro only does reflected caustics and requires the Superpatch;  it also
> treats all light sources as point lights, so I doubt it'll help you. Sorry.
> There are very few renderers around that do the thing you want and POV
> currently isn't one of them. You might try out BMRT (Blue Moon Rendering
> Tools); it can handle caustics to some extent and is freely downloadable.
> But unless you are somewhat familiar with the RIB format and shaders, (and
> have a Cray or sth., because caustics are slooooow), I suspect this is of no
> use, either.
> Wish I could help more.
> Margus

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