scott wrote:

>> Right. So trace rays, let them bounce off diffuse surfaces at 
>> semi-random angles, and gradually total up the results for all rays?
> 
> Yes.

OK. Sounds simple enough...

>> Presumably that won't work with point-lights though? (You'd never hit 
>> any!)
> 
> Unless you start some rays from the point light to add into the mix (in 
> a physically correct way of course).

Well... presumably it still traces rays "backwards" from camera to 
source, right?

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