Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: dianalacruz on 2021-08-17, 12:49:02

Title: Caustics! Fireflies & White spots
Post by: dianalacruz on 2021-08-17, 12:49:02
Hi everyone!

I've been trying on doing great caustics since a lot, folowing the Helpdesk, tutorials, trying the simplest scenes, configurations... but I ALWAYS get really dirty caustics.
I'm really out of ideas on what I'm doing wrong.
I'm using 3 computers in DR, default render configuration, simple glass material, one source of light... I'm clueless.

I'm attaching some examples
Title: Re: Caustics! Fireflies & White spots
Post by: pokoy on 2021-08-17, 15:06:03
Does the same happen if you don't use region rendering? Regions are not supported, you need to render the whole frame without specifying regions.
Also, since this seems to be a simple scene, I'd share it so support can easily reproduce the problem that way.
Title: Re: Caustics! Fireflies & White spots
Post by: Avi on 2021-08-17, 15:40:44
Hi,

What version of Corona are you using? If you are using Corona 6, can you upgrade and try using Corona 7 to see if the issue is still the same?

If the issue persists, please upload your scene using the link present in my signature & share the file name.

Let me know.

Regards,
Avi
Title: Re: Caustics! Fireflies & White spots
Post by: dianalacruz on 2021-08-19, 12:30:29
Does the same happen if you don't use region rendering? Regions are not supported, you need to render the whole frame without specifying regions.
Also, since this seems to be a simple scene, I'd share it so support can easily reproduce the problem that way.

Yes, it's indifferent if i do it with or without regions. I'll try to upload corona version, and If it persist, I'll upload the scene :)
Title: Re: Caustics! Fireflies & White spots
Post by: dianalacruz on 2021-08-19, 12:32:00
Hi,

What version of Corona are you using? If you are using Corona 6, can you upgrade and try using Corona 7 to see if the issue is still the same?

If the issue persists, please upload your scene using the link present in my signature & share the file name.

Let me know.

Regards,
Avi

Yes, I'm using Corona 6. I'll try as you say, and tell you afterwards

Thank you all!
Title: Re: Caustics! Fireflies & White spots
Post by: dianalacruz on 2021-08-19, 14:11:53
Updated to Corona 7, it's a lot clearer, but still a bit "blurry"?
Maybe that's how it's suposed to look like, but it lacks rendering time.

Attached the scene too.

Thanks!

UPDATE:: That's the result for a 4% noise level target, 1900x2375px, CHQ denoiser (4.jpg)(4_2.jpg). Can't render a 1% level target on some scenes, it would take tooooooo much.
Title: Re: Caustics! Fireflies & White spots
Post by: dianalacruz on 2021-12-17, 10:37:42
UPDATE::

Found something weird... Caustics works better if I only activate them in the material, and let the caustic solver on the render settings disabled... if I enable both (material and render settings, it gets messy as I showed). I understand nothing haha