Light pass-through. transmissivity is a 0..1 multiplier applied to the contribution flowing from the from side to the to side. Returning 0 short-circuits the propagation — the walker treats the boundary as opaque for this direction.
transmissivity
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Light pass-through.
transmissivityis a 0..1 multiplier applied to the contribution flowing from thefromside to thetoside. Returning0short-circuits the propagation — the walker treats the boundary as opaque for this direction.