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Bright little circles with GPU Path
Posted: Sat Sep 14, 2019 8:03 pm
by wasd
I just started using GPU Path, so I wonder might anyone know what's with those light circles?
Denoiser removes most of them, but they get stronger when sample count rises.
Here's the scene
https://drive.google.com/open?id=12MoiA ... -YhoX9pFwx.
PhotoGI Cache is enabled in the scene, yet those circles also appear when it's disabled.
Re: Bright little circles with GPU Path
Posted: Sat Sep 14, 2019 8:19 pm
by B.Y.O.B.
Are you using the bloom filter? They look like fireflies + bloom to me.
Re: Bright little circles with GPU Path
Posted: Sat Sep 14, 2019 8:26 pm
by wasd
B.Y.O.B. wrote: Sat Sep 14, 2019 8:19 pm
Are you using the bloom filter? They look like fireflies + bloom to me.
I completely forgot about bloom

Thank you very much! They're not circles, but are conventional fireflies.
Well, I'm not accustomed to fireflies. I used nothing but Bidir before and Bidir rarely produce them.
Re: Bright little circles with GPU Path
Posted: Sat Sep 14, 2019 8:31 pm
by Dade
wasd wrote: Sat Sep 14, 2019 8:26 pm
Well, I'm not accustomed to fireflies. I used nothing but Bidir before and Bidir rarely produce them.
Variance clamping is the tool to use with path tracing to removing them.
Re: Bright little circles with GPU Path
Posted: Sun Sep 15, 2019 10:13 am
by wasd
Dade wrote: Sat Sep 14, 2019 8:31 pm
wasd wrote: Sat Sep 14, 2019 8:26 pm
Well, I'm not accustomed to fireflies. I used nothing but Bidir before and Bidir rarely produce them.
Variance clamping is the tool to use with path tracing to removing them.
Thanks a lot! I set suggested value for clamping and fireflies are gone.
Re: Bright little circles with GPU Path
Posted: Sun Sep 15, 2019 10:37 am
by epilectrolytics
Very nice interplay of the reflections from the four panes.
Simple but rewarding setup - great work!