Warp wrote:
> John VanSickle <evi### [at] hotmailcom> wrote:
>>> (I have to admit, though, that I can think of variations where
>>> samples can be jittered *and* shared between pixels. However, I don't know
>>> exactly what POV-Ray is doing.)
> 
>> I don't see a problem with jittering a shared sample.  Samples can be 
>> assigned to a particular place in the pixel, and this assignment used to 
>> determine any sharing between pixels (or sub-pixels, since this is 
>> adaptive); when the sample is actually traced, it can be jittered at 
>> that time.
> 
>   Which is what I said. :)
> 
>   Maybe if POV-Ray doesn't currently share antialiasing samples between
> pixel someone could take a look how difficult it would be to make a patch
> to do exactly that.

 From the docs:  "Samples that are common among adjacent pixels and 
sub-pixels are stored and reused to avoid re-tracing of rays."

Regards,
John

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