POV-Ray : Newsgroups : povray.general : odd behavior of photon reflection/refraction defaults : Re: odd behavior of photon reflection/refraction defaults Server Time
23 Dec 2025 18:35:48 EST (-0500)
  Re: odd behavior of photon reflection/refraction defaults  
From: jr
Date: 19 Dec 2025 17:05:00
Message: <web.6945cb26874e57e852af7e976cde94f1@news.povray.org>
hi,

"Kenneth" <kdw### [at] gmailcom> wrote:
> "jr" <cre### [at] gmailcom> wrote:
> > How do you fancy "having a go" at turning the "Perfect Mirror" thread into
> > a "FAQ" item ?  (or a draft for an added "Tip" based on your observations ?)
>
> Sorry for the delay in responding...real-life and holiday chores took over.
> Perhaps a combination of FAQ and B.E.'s all-inclusive test-scene idea would be
> the best approach to a better understanding of the current photons behavior; I
> will try to put together a draft FAQ (or addition to 'photon tips and tricks')
> after the New Year...once I get a clear scenario in my head of how best to
> approach it.

thank you very much.  on "second thought" :-), or perhaps as a wiki "How To"
item ?  (more "elbow room")


> Meanwhile, I continued testing in v3.8 beta 1-- and came across some
> *really* odd behavior of photons interacting with objects (which proved to be
> TEMPORARY, I am happy to say.)
> ...
> Near the end of this testing process, I decided to shut down v3.8 and run the
> scene in v3.7 instead, to compare results: NO odd behavior there, which was a
> good sign. So I brought it back to 3.8... and the problem had suddenly
> DISAPPEARED! I could not even reproduce it by fiddling with photon settings.
> ...
> Or was it just 'gremlins and goblins' playing with me?? I think that's the
> likely answer.  :-o

agree, they (machines) can have "a mind of their own", it seems at times.


regards, jr.


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