POV-Ray : Newsgroups : povray.beta-test : on-the-fly file output Server Time
25 Dec 2024 22:56:30 EST (-0500)
  on-the-fly file output (Message 1 to 4 of 4)  
From: clipka
Subject: on-the-fly file output
Date: 25 Dec 2008 15:45:00
Message: <web.4953efbd34f9633bb4b5346b0@news.povray.org>
I noticed that the beta does not produce file output "on the fly" anymore. So
until POV-ray has finished successfully, I have only the preview window for
accessing the image data.

I see that as a major drawback, because I can't use the preview window on my
Linux machine in any sensible way (X-Window server running on different
machine, crashing the POV-ray task when I close the X session unless I disable
preview).

With on-the-fly output as performed by POV 3.6, I still could have a look at the
output file to see how the render was progressing, whether everything was fine
so far etc. And if something went utterly wrong and the 48-hour render got
terminated prematurely, I could still "scavenge" the output created until then.

Technically it should be possible to re-enable it; I am aware that the
block-oriented rendering prohibits straightforward progressive output, but at
least whenever all the blocks of a "block row" have been rendered it should be
possible to write the corresponding data to file.


Alternatively: I guess that the POV-ray 3.7 status files include the image data
collected so far. If it was possible to "peep" into the status file of a
running (or aborted) render, that would be a great thing.


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From: Thorsten Froehlich
Subject: Re: on-the-fly file output
Date: 25 Dec 2008 16:39:52
Message: <4953fda8$1@news.povray.org>
clipka wrote:
> Alternatively: I guess that the POV-ray 3.7 status files include the image data
> collected so far. If it was possible to "peep" into the status file of a
> running (or aborted) render, that would be a great thing.

The "continue" feature is fully functional in 3.7. It does pretty much 
exactly what you want!

	Thorsten


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From: clipka
Subject: Re: on-the-fly file output
Date: 25 Dec 2008 20:35:01
Message: <web.4954348495a56963b4b5346b0@news.povray.org>
Thorsten Froehlich <tho### [at] trfde> wrote:
> clipka wrote:
> > Alternatively: I guess that the POV-ray 3.7 status files include the image data
> > collected so far. If it was possible to "peep" into the status file of a
> > running (or aborted) render, that would be a great thing.
>
> The "continue" feature is fully functional in 3.7. It does pretty much
> exactly what you want!

Are you sure? Because if I wanted to "peep" into the status file of a running
render, I guess it would screw up things or not work at all.


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From: Chris Cason
Subject: Re: on-the-fly file output
Date: 3 Jan 2009 20:07:56
Message: <49600bec$1@news.povray.org>
clipka wrote:
> Technically it should be possible to re-enable it; I am aware that the
> block-oriented rendering prohibits straightforward progressive output, but at
> least whenever all the blocks of a "block row" have been rendered it should be
> possible to write the corresponding data to file.

We need to re-enable this not only for your case but for typical unix file
piping, at least for e.g. ppm and so forth, and your suggested method would
be the most straightforward I expect.

-- Chris


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