Page 1 of 1
Area light noise on the side
Posted: Mon Dec 12, 2022 11:14 am
by isolog
Area light noise on the side is difficult to remove
This is the result of 3000 samples from the PT engine

- oc
This is the result of rs double brute force automatic sampling 0.01

- rs
So is there any way to render noise cleanly without denoise?
Re: Area light noise on the side
Posted: Tue Dec 13, 2022 10:35 am
by isolog
Additional Info:
Re: Area light noise on the side
Posted: Tue Dec 13, 2022 4:55 pm
by frankmci
Reducing the GI Clamp to something that fits the scale of your scene should help a lot. I doubt I ever use a setting of more than 10, but it defaults to 1000000. I generally start at 1, then tweak from there, if necessary. This is Path Tracing with 300 samples.
Re: Area light noise on the side
Posted: Tue Dec 13, 2022 4:59 pm
by aoktar
Anyway it looks like a weakness on Light rays which are blocked by self at zero angle between faces. You may export ORBX and post in standalone topic
Re: Area light noise on the side
Posted: Tue Dec 13, 2022 5:53 pm
by frankmci
elsksa wrote:
That's exceedingly low. Although it wouldn't make a drastic difference in a scene that has weak lights, among some other factors.
Hmm. I'm curious to know your experience with GI Clamp. Here's a quickie mock-up of your example, using an Octane Daylight as the only light source. Yes, it's certainly too noisy at this point with only 300 samples and a diffuse depth of 6, but it's a pretty decent starting point. Using higher GI clamp doesn't improve anything. I wonder what we are doing differently. I'll have to read that page you linked to at lunch.
Re: Area light noise on the side
Posted: Wed Dec 14, 2022 8:30 am
by isolog
aoktar wrote:Anyway it looks like a weakness on Light rays which are blocked by self at zero angle between faces. You may export ORBX and post in standalone topic
Thanks, I will.