And lo on Tue, 15 Jun 2004 07:38:45 -0500, Hughes, B.  
<omn### [at] charternet> did spake, saying:

> "Phil Cook" <phi### [at] nospamdeckingdealscouk> wrote in message
> news:opr9mvqsl8efp2ch@news.povray.org...
>>
>> As a quick solution try upping the reflection values (0.1 seems to  
>> work):
>> 9.1.3.5 Photon mapping is calculated only for those (user-specified)
>> objects that need it (ie. objects that have reflection and/or  
>> refraction).
>>
>> As your objects barely reflect or refract maybe there aren't enough
>> photons doing anything worth storing?
>
> I think that statement from the doc might just be about using photon  
> blocks
> with target and/or collect. There may be a reflection threshold going on,
> too, but nothing I'd know about; aside from the count, spacing, and some
> other settings anyway.
>
> Besides, I already tried increasing the reflections and got the same  
> result
> concerning the map not saving if 'count' were used. I didn't raise that
> above 2 million, where-- IIRC-- it caused the "photons shot" number to
> increase, however it just refused to save a map even then. Without having
> tried everything possible I could never say it would never do so, just  
> that
> it seems a bit odd for it to not reach that point with a lower count than
> that anyway.
>
> I should say, though, 'spacing' has always been my usual method of using
> photons so this trouble with count isn't anything I'm likely to encounter
> myself.
> ;-)

Odd I set count to 20000 and I set the reflection on the last union object  
to 0.1 no error message and switching comments to load the photon map  
seemed quite happy.

--
Phil Cook

-- 
All thoughts and comments are my own unless otherwise stated and I am  
happy to be proven wrong.

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