Yes, path depth for all rays (total glossy diffuse... all of them)
PhotonGI cache
Re: PhotonGI cache
Re: PhotonGI cache
But bidir is still much brighter. I've tested it earlier (before PGI), and PT was always noticable darker than bidir.
Re: PhotonGI cache
Yes... bidir is brightest, then PT and high pathdepths and lowest brightnes you'd see with PT+PGI...
Maybe it is expected behavior, but what's interesting to me is, that in a very basic scene PT+PGI will be even brighter than bidir... so that's why I think there could be something wrong. One way or another, I don't mind a little bias for the huge boost in speed, but still feels off in some cases.
Re: PhotonGI cache
I always keep thinking that textures (just as hdri) somehow kill cache... I don't see other reason for weaker lighting from PGI if with simple materials it just works... maybe something with gamma settings or so...
Re: PhotonGI cache
I have created a simplified version of this scene.
However you didn't post the render config settings you used, so mine may be off.
The scene consists of a cube with a hole, lit by an HDRI as only light source.
Included are the .blend file and LuxCore cfg/scn exported via Filesaver.
Note: I forgot to disable autolinear tonemapping, see this post for a fixed scene: viewtopic.php?f=5&t=840&p=10565#p10565
Re: PhotonGI cache
Thank you for that effective solution.I have created a simplified version of this scene.
However you didn't post the render config settings you used, so mine may be off.
Re: PhotonGI cache
Also hope the fix for this will be in 2.2 alpha 0 as it is really obvious difference.
Re: PhotonGI cache
Does the total number of photons have to be the sum of indirect and caustic?
What units are the glossy T, the values go from 0 to infinity?
What units are the glossy T, the values go from 0 to infinity?
Re: PhotonGI cache
Nope, it is the number of photon paths traced, each path can create 0 to many cache entries.
The are the U/V roughness parameter of glossy and glossy-like materials (i.e. [0, 1] range).
-
- Posts: 16
- Joined: Fri Mar 09, 2018 1:46 pm
Re: PhotonGI cache
maybe the brightness difference comes from tonemapping in camera setting, just guessing.