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Path Guiding - Again

Posted: Fri Jun 05, 2020 2:34 pm
by provisory
After reading the lecture below, I think LuxCore's PhotonGI Indirect Light cache could be modified with relatively small changes to provide something like Path Guiding: ... tional.pdf
(Path Guiding part begins on page 29.)

I believe, fundamentally these two modifications should be added:
  • A small set of directions over the hemisphere should be stored for each cache entry.
  • The cache should be regenerated periodically (like with the Caustic Cache).
Of course, this would not be exactly the solution described in the lecture, but it could work on GPU too (like current PGI).