Am 12.01.2011 14:31, schrieb stevenvh:
>
> Yes, I am, but as I understand it radiosity influences pixels color through the
> object's color in the scene, not the (adjacent) pixels in the image.

That's right, but as radiosity is a sample-based algorithm, results 
depend on where exactly throughout the scene the radiosity samples are 
taken. This in turn depends on the exact order in which the pixels were 
rendered during pretrace - which in turn depends (a) on which areas are 
covered by pretrace anyway (which obviously differs between renders of 
different subsection of the image) and (b) on thread scheduling by the 
OS (which may be different even between two renders with exactly 
identical parameters).

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