Invisible <voi### [at] devnull> wrote:
> Does anybody, anywhere, have any details of how the algorithm actually
> works? As in, how is this different to a normal ray tracer?

Yeah. Just search google:

path tracing
monte carlo path tracing
bidirectional path tracing
etc.

Basically it is this simple:

1. You shoot ray to scene and let it bounce randomly as it wants based on
material characteristics.
2. Repeat many times.

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