Nathan Kopp wrote:

> The problem is this:
> 
> Ray-tracing assumes (incorrectly) that all of the light in the scene comes
> from a single (or multiple) point light sources.  In reality, much
> (sometimes the majority) of light comes from indirect diffuse interaction.
> 
> To compensate ...

>                                                     ...In reality, the
> light source would be dimmer (making the caustics dimmer), and diffuse
> interaction would make everything (including the shadow areas) brighter.
> 

Interesting. Your remarks remained me not to overlook the limitations of
point light sources.

>...
> Your solution is good, though it would be better if your "fill light" was a
> shadowless light.
> 
Well I was focussed in a slow time rendering solution. Shadowless light
is a faster one.

I have start some experiments with radiosity. Its amazing how radiostiy
can change an image. With some settings you can make the glass glow.

Alberto

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