PhotonGI cash problem

[PetrT]

Use of PhotonGI Cache makes results a bit darker.
Not sure, but I think it was already mentioned...

This topic about another problem.
Problem with shading solves when Environment Light Cache is turned off

[kintuX]

Righty then... not a problem really

[PetrT]

pic of test

[Dade]

Test scene https://dropmefiles.com/lJ5Za

I'm looking into the problem.

[Dade]

It looks like the problem is related to the use of constant infinite light, if I replace the light source with an HDR infinite light source, it works fine:

[PetrT]

thank you

[Dade]

Fu*k, this scene was driving me crazy, I was getting out all kind non sense results.

Your problem is just caused by an extremely low clamping value. If you disable variance clamping (or raise the value by a significative amount). The rendering will be fine.

You were "clamping" a tons of light, this is a rendering with your clamping value:

and this without clamping:

You are clearing cutting half of the transported light (and causing artifacts in the process).

[Sharlybg]

Fu*k, this scene was driving me crazy, I was getting out all kind non sense results.

As a reminder this should be put in the tooltips of clamping. ""Too low value can break lighting and create artifacts with GI cache """

[PetrT]

this scene was driving me crazy, I was getting out all kind non sense results.

Sorry,It was not the aim of my post.
I guess just another interesting case

[Dade]

Sorry,It was not the aim of my post.
I guess just another interesting case

I'm not sure to understand the statement but I have the feeling you have to run the rendering without clamping to get a valid suggested value.