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unoccluded– returns unoccluded or unshadowed result.
noclamp– returns unclamped result.
nothruput– does not apply thruput (thruput is the accumulative albedo of the objects hit by rays).
shadows– returns collected shadows.
holdouts – holdout LPE that directs the LPE output to the beauty channel.returns only holdout light paths (light paths with one or more holdout events)
overwrite– instead of outputting the accumulated result, overwrite it. One example of using this is for the albedo output where we do not want an accumulated result.
noinfinitecheck– do not do any infinite check.