>   On the other hand, calculating radiosity only where it's needed and not
> everywhere saves rendering time and memory.

What if one were willing to invest the time and memory for calculating the
radiosity of the whole scene? Wouldn't that be cool? I mean, you process
once, and then you can do a flythrough throught any point of the scene as
many times as you want to, without having to reprocess. I would do it. :)

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