Interesting suggestion, though if I understand you correctly that means I 
need to know where the halfway point in my image is. But if I know that I 
can just do a partial render on each machine of say 55% of the image, and 
the post processing will behave nicely, without any need to trick it into 
doing continued renders.

But if I do that it's guaranteed that one of my machines will finish faster 
than the other, because the top of my scene is slower. So what I'd like to 
do is start them both rendering and stop them once they overlap, that way I 
don't end up wasting any time waiting for one or other machine to finish!

Incidentally, I did continue a render the other day and discovered that the 
post-processing only gets applied to the continued part, not the whole 
image.

-- 
Tek
http://evilsuperbrain.com

"Christoph Hormann" <chr### [at] gmxde> wrote in message 
news:dten12$iv4$1@chho.imagico.de...
> Tek wrote:
>> I have a problem, I want to render a scene on 2 different machines, but 
>> I'm using megapov's post-processing. The idea would be I render the scene 
>> normally on the first machine and upside down on the second machine, then 
>> stop it when there's a decent overlap, but megapov's post processing 
>> won't run if I stop the render!
>>
>> So, does anyone know of a way to persuade megapov's post processing to 
>> run on a partial render?
>
> No.  What you could however do (although this is a really scary hack) is 
> to create a dummy 'first half' render using an empty scene, interrupt it 
> and use it for initializing a continued trace of your actual scene.  Do 
> the actual render of the first half on the second machine, interrupt it 
> and continue it with the empty scene to finish and post process.
>
> And finally put the two halfs together (AFAIK common interpretation of the 
> IRTC rules does not consider this to be illegal post processing if you 
> don't actually alter the image).
>
> You will have to make sure you work with sufficient overlap between the 
> two parts when you use a non-local post processing (like blur).
>
> And i have no idea if post processing can actually be combined with 
> continued trace without problems.
>
> Christoph
>
> -- 
> POV-Ray tutorials, include files, Landscape of the week:
> http://www.imagico.de/ (Last updated 31 Oct. 2005)
> MegaPOV with mechanics simulation: http://megapov.inetart.net/

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