> It is possible to render a portion of an image, but getting the images
> tiled without discontinuities is a problem. If you distribute parts of
> an image to different machines this way, features like radiosity,
> antialiasing, etc can produce a "tiles" effect, like a mosaiac
> photograph.

couldn't this be solved by using overlapping tiles?

Rick

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In povray.general Chris Huff <chr### [at] maccom> wrote:
: It is possible to render a portion of an image, but getting the images 
: tiled without discontinuities is a problem. If you distribute parts of 
: an image to different machines this way, features like radiosity, 
: antialiasing, etc can produce a "tiles" effect, like a mosaiac 
: photograph.

  So far radiosity is the only source of problems. Antialiasing is not
a problem.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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On 28 Jun 2000 23:41:08 -0400, daishi wrote:
>ron### [at] povrayorg (Ron Parker) wrote in
><slr### [at] linuxparkerrfwicom>: 
>
>>On 28 Jun 2000 23:35:08 -0400, daishi wrote:
>>>if I'm not mistaken there is a way to save the radisoisty file in
>>>pov-ray. would making sure each time you did radisoity you saved the
>>>file work around the problem?
>>
>>For continued renders, yes.  I'll leave the question of whether it would
>>help parallel rendering as an exercise for the reader.
>>
>
>me thinks I'll try this tomorrow....

Well, that confirms my suspicions.  The answer to that question does not
require research, just a little (very little) thought.

(hint: if you don't have the radiosity cache you need for line 10 until you
finish line 9, how are you going to render line 10 in parallel with line 1?)

-- 
Ron Parker   http://www2.fwi.com/~parkerr/traces.html
My opinions.  Mine.  Not anyone else's.

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"Warp" <war### [at] tagpovrayorg> wrote in message news:395b4663@news.povray.org...
| In povray.general Chris Huff <chr### [at] maccom> wrote:
| : It is possible to render a portion of an image, but getting the images
| : tiled without discontinuities is a problem. If you distribute parts of
| : an image to different machines this way, features like radiosity,
| : antialiasing, etc can produce a "tiles" effect, like a mosaiac
| : photograph.
|
|   So far radiosity is the only source of problems. Antialiasing is not
| a problem.

Radiosity sampling would be nice for partial renders, even if POV-Ray were to
redo the entire image in mosaic preview before doing the selected region.
Guess that goes without saying.

Bob

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In povray.general Bob Hughes <per### [at] aolcom?subject=pov-news:> wrote:
: Radiosity sampling would be nice for partial renders, even if POV-Ray were to
: redo the entire image in mosaic preview before doing the selected region.
: Guess that goes without saying.

  This is only supposing that it will not calculate any new radiosity samples
in the final pass.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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tom### [at] tomandluf9couk (Tom Melly) wrote in <395b19de$1@news.povray.org>:

>"lavender" <lav### [at] hotmailcom> wrote in message
>news:8F617F84Elavendersmith@204.213.191.228...
>> Computers have been networked not for a long time. The internet is
>> almost .....
>
>Hmm, I smell a rat - or am I just being naive in thinking that no one
>could be this idiotic and insulting accidentally?
>
>> ... As for money they can talk to me about that.
>
>I hereby appoint myself financial director in the lavender/POV-team
>endevour. Send me money. Initially, it will be spent on a new Pentium
>III PC for myself, as I wish to render all contracts with radiosity and
>photons on iso-surface paper.
>
>

I am not sure what you are trying to say with this but I will reply to the 
buttom part.

Why do you not have enough money to buy you a new PIII system? Email this 
back and I will explain! Not in this form.

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"lavender" <lav### [at] hotmailcom> wrote in message
news:8F6276DAClavendersmith@204.213.191.228...
> tom### [at] tomandluf9couk (Tom Melly) wrote in <395b19de$1@news.povray.org>:
>
> >"lavender" <lav### [at] hotmailcom> wrote in message
> >news:8F617F84Elavendersmith@204.213.191.228...
> >> Computers have been networked not for a long time. The internet is
> >> almost .....
> >
> >Hmm, I smell a rat - or am I just being naive in thinking that no one
> >could be this idiotic and insulting accidentally?
> >
> >> ... As for money they can talk to me about that.
> >
> >I hereby appoint myself financial director in the lavender/POV-team
> >endevour. Send me money. Initially, it will be spent on a new Pentium
> >III PC for myself, as I wish to render all contracts with radiosity and
> >photons on iso-surface paper.
> >
> >
>
> I am not sure what you are trying to say with this but I will reply to the
> buttom part.

but tom what?

>
> Why do you not have enough money to buy you a new PIII system? Email this
> back and I will explain! Not in this form.

What form would you like to use? (recognisable English would be a start).

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On 29 Jun 2000 05:02:30 -0400, Warp <war### [at] tagpovrayorg> wrote:

>  That's why they are only partly pre-emptive.
>  I can make a program that completely steals all the CPU time in windows.
>  I can't do this in Unix. I can make a program that steals _most_ of the
>CPU time, but still it just can't lock up the system; other programs can
>still run and, for example, kill the resource-stealing program if necessary.
>In windows, however, it is possible to make a program that locks up the
>system completely.
>  I don't know about win2k or NT.

I can't say about win2k but my experience with NT reveals that it's
not much better in this regard (aside from being a worse CPU and RAM
hog thant Win9x). What I have in mind is a nightmare in which NT took
half an hour to boot on a K6/233 with 64 RAM, the last fifteen minutes
being spent on drawing an icon a minute on the desktop. In this
nightmare a network client was trying to connect to localhost for some
reason only known to itself and took in the process so much CPU time
that it couldn't even be killed, giving an absurd message akin to "The
network server is too busy to complete this request". The thing that
troubled me the most was that this nightmare was real. No more NT for
me since then, No Thanks.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] usanet
TAG      e-mail : pet### [at] tagpovrayorg

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Tom Melly wrote:
> 
> What form would you like to use? (recognisable English would be a start).

I thought only germans were able to start language flame wars...

shhh.

Markus

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> main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
> ):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

Clever little program ...

Jon

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