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Lecture 13: Global Illumination and Path Tracing (45)

After 2 bounces shouldn't the light be illuminated from its own light? It looks really black here.


I think there shouldn't be a black rectangle on the ceiling as well.

(Idk if it's correct) My explanation is that, just for computation, the initially emitted light is always much stronger than light that get bounced several times, so we might as well worry about the light bounced back to the light source.

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