POV-Ray : Newsgroups : povray.general : Photon distribution against limited memory : Re: Photon distribution against limited memory Server Time
2 Aug 2024 06:20:36 EDT (-0400)
  Re: Photon distribution against limited memory  
From: Mike Thorn
Date: 27 Dec 2004 17:28:00
Message: <41d08c70$1@news.povray.org>
Dave Vogt wrote:
> Hello everybody,
> 
> I just had an idea for a problem we all probably already ran into:
> Memory consumption while tracing photons. I had a scene at which,
> after half a day, povray died because there was too little memory.
> After thinking about it, the basic idea which came up was to just
> stopping to trace photons when a given limit of RAM usage is reached.
> But as I understand the documentation, there would be a problem with
> the distribution of the photons, which would be uneven in this event.
> 
> What about the following: Change the distribution of photons to
> something stochastic, so the distribution is more or less even when we
> have to stop eating memory, and we can continue with rendering.
> 
> On the other side, I'm not a mathematician, nor am I familiar with the
> POV source.. So please, tell me if this is a completely stupid idea,
> or if I just found out something interesting. Or is there already a
> better or at least usable solution and I didn't find it?

It all sounds logical, but why not just use fewer photons from the 
start? You would accomplish basically the same result.

~Mike


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