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Mixing bidir with path

Posted: Thu Apr 23, 2020 4:07 pm
by Sharlybg
neve thought this possible : electively Metropolised
Monte Carlo light transport simulation


For this indoor scene lit by a sun/sky environment emitter, path tracing resolves most of the lighting well, but introduces high variance in the reflective caustic cast by the mirror. ERPT and RJMLT resolve the caustic better, but do not handle diffuse lighting well and introduce noise and temporal flickering. Our method uses MLT to only resolve the difficult paths using bidirectional path tracing, and handles everything else with path tracing, leading to significantly improved MSE (relative MSE shown in insets) and vastly reduced temporal flickering. Scene ©SlykDrako.

Re: Mixing bidir with path

Posted: Thu Apr 23, 2020 4:25 pm
by B.Y.O.B.
This sounds a lot like the "add light tracing" option in LuxCore (hybrid backforward).

Re: Mixing bidir with path

Posted: Sun Jun 14, 2020 8:37 am
by Theo_Gottwald
Here is a video that shows it in more detail.

Mixing Light Transport modes.