POV-Ray : Newsgroups : povray.general : POV-Ray: Photons: save_file: Continue? : Re: POV-Ray: Photons: save_file: Continue? Server Time
2 May 2024 15:23:35 EDT (-0400)
  Re: POV-Ray: Photons: save_file: Continue?  
From: Sven Littkowski
Date: 26 Jan 2008 20:03:29
Message: <479bd861$1@news.povray.org>
YES!!! That would be fine! In addition, you would be free to use the items 
inside there for your own scenes, I do not mind.

Specs:
- Intel Pentium DualCore 3.06 GH CPU
- 2,048 MB RAM (2 GB RAM)
- Scene File Output Resolution: 3,200 x 2,400 pixels

Do you know about "Render Farm" software?

Sven






"Nicolas Alvarez" <nic### [at] gmailisthebestcom> schrieb im 
Newsbeitrag news:479bd45a$1@news.povray.org...

>> Your answer hits my worst fears: after three days working on a photon 
>> file which has not yet been saved, all is lost!
>>
>> My question is: why allows POV a scene to be continued, but not a photon 
>> file?
>>
>> Please, developers, create the possibility to also continue the photon 
>> map file after a stop (of which reason ever). POV-Ray partially writes 
>> data into an image, so it can continue where the previous render was 
>> stopped. Could the same procedure of partial writing into a file not be 
>> applied to the photon file, as well?
>
> Note that when saving a PNG image, the file is only flushed to disk every 
> 16 lines. Probably it's also updated when you pause the render; but that 
> won't happen on a power failure, so you could lose your last 15 lines :)
>
> In the case of photons, it looks like they are "sorted" (whatever that 
> means) when the photons finish shooting. And *then* they get saved. I see 
> no reason why it couldn't save the photons as they get calculated, then 
> sort them and overwrite the whole file with the sorted version, so that if 
> the render gets suspended before it's done, it could in theory load from 
> the file, shoot what's left, and sort the whole thing. But I know little 
> about the internals of how photons work, so there may be a good reason why 
> it's not done this way.
>
> PS: what are your computer specs? If mine turns out to be better than 
> yours, I could give you some CPU time for that insane render.


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