Doesn't look too good. I'll post the scene as a reply
to the other one, but the effects aren't really satsifying.
For one, I've tried to use the blurred-reflections-technique
(as described on my homepage), and the texture is still
in the scene, though not in use.
Problem is, the photons get reflected too directly, and
as such, we get very sharp shadows. It works for some
parts of the scene, but not quiet satisfying. It seems
photons would have a long way to go to simulate global-
illumination.

Anyway, you can have a look at the scene and toy around.
Was a neat idea, but the experiments show that the effort
is futile. It would get ridiculously slow in parsing and
memory for an amount of photons using blurred-reflections
to get the desired global-illumination-look.

Anyways, perhaps some might get more insight into this
issue of using photons...

Regards,
Tim


--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde
"Tim Nikias" <tim### [at] gmxde> schrieb im Newsbeitrag
news:3e56088b@news.povray.org...
> > You amaze me.
>
> Nah, just experience and a nack for experimenting.
>
> What might work for every surface to collect photons
> and every surface to reflect photons, would be to put
> them all inside a union{} and make them a target. Photons
> will be generated with all objects using reflection, but won't
> show up in the final image due to no_image.
>
> But, in this occasion, if you want the entire scene to be
> light by photons, it would probably really be easier to put
> something like
> #declare Reflect_Photons=yes;
> at the beginning and
> finish{ #if (Reflect_Photons) reflection 1 #end [other finishes]}
> inside every finish for every material.
> Then render the scene with reflections on, and save the photons
> using "save_file" inside the photon{} Block of the global
> settings.
> Then, switch Reflect_Photons to no/off/0 and use
> load_file instead of save_file. Thus, no specular reflections,
> but photons all over the place. This would get quiet parsing
> and memory intensive though.
>
> Let me see if I can cook up a small scene for that.
>
> Regards,
> Tim
>
> --
> Tim Nikias
> Homepage: http://www.digitaltwilight.de/no_lights/index.html
> Email: Tim### [at] gmxde
>
> > Tim,
> >
> > You amaze me.
> >
> > This is an interesting technique you have there. I've looked at your image
> > and the specular reflections of photons are currently too obvious as the
> > caustics on the floor and on the the two walls behing clearly shows. I think
> > that something that might help diffuse the caustics a little more would be
> > to add a very rough bump material on the surface of the reflecting objects.
> >
> > White Zebra
>
>

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