Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: James_O on 2017-06-18, 14:14:27

Title: Glow in the corners
Post by: James_O on 2017-06-18, 14:14:27
Hello I'm new to Corona,
I've modelled a scene and tried to render it, but for some reason, I see a glow in the corners.
It's as if there are some small light emitters scattered along the edge.
(http://)

Please help
Title: Re: Glow in the corners
Post by: johan belmans on 2017-06-18, 14:21:28
LooKs like light leaks, probably you need some thickness on the walls and ceiling. Add a shell modifier.
Title: Re: Glow in the corners
Post by: romullus on 2017-06-18, 14:24:03
And here's article about that in Corona's helpdesk: https://coronarenderer.freshdesk.com/support/solutions/articles/5000516209-i-can-see-noise-in-the-corners-of-my-scene-
Title: Re: Glow in the corners
Post by: James_O on 2017-06-18, 18:04:12
Thanx but it's not the geometry.
I've even intersected objects.
(http://)
Title: Re: Glow in the corners
Post by: sprayer on 2017-06-18, 18:09:29
scene near 0.0.0 coordinates?
Title: Re: Glow in the corners
Post by: romullus on 2017-06-18, 19:22:24
Can you show UHD cache settings?
Title: Re: Glow in the corners
Post by: James_O on 2017-06-19, 12:39:50
Hi I came to work today, and it works fine here)))
Originally I created the model at work (3DS MAX 2018 + Corona 1.5), but at home I have 3DS MAX 2015 + Corona 1.5, so it's probably comparability and export issues.
But thanx for your help anyway
Title: Re: Glow in the corners
Post by: romullus on 2017-06-19, 15:15:08
Most likely it's due to the bug that was introduced in 1.5 (fixed in hotfix). Here's how to fix it: https://coronarenderer.freshdesk.com/support/solutions/articles/12000020539-i-can-see-splotches-spots-light-leaks-in-my-image-
Title: Re: Glow in the corners
Post by: maru on 2017-06-19, 16:03:10
This should be also automatically fixed if you install Corona Renderer 1.6 hotfix 1 (currently the newest version).
Title: Re: Glow in the corners
Post by: James_O on 2017-06-20, 10:26:17
Hello I actually found the fix for this.
In the "performance" tab, the "precision" value was set to 0.5 by default, if you increase it to 2-4 then the issue is fixed.
Title: Re: Glow in the corners
Post by: maru on 2017-06-20, 10:42:30
Yes, that's exactly what we meant, however the bug in 1.5 affected some UHD Cache settings which are not exposed to the user. So even setting the precision value high may not fully solve the issue. Please apply the "reset settings" solution, or just install Corona 1.6 hf1.