> That would use huge amounts of memory, and I'm not sure how useful it
> would be. Using accumulation buffers would have big limitaitions, like
> only blurring things on objects seen directly.

Here is a simulated example (http://195.221.122.126/layers/layers.html) to see
what happens
i agree that
- it's probably useless for scene with lots of reflection/refraction
- it allows to tweak, and *fake* stuff (and this can sound like heresy to
ray-tracer integrists :)

M

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