Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: cstephens0284 on 2023-09-12, 20:50:40

Title: Corona AO is bleeding on polygons
Post by: cstephens0284 on 2023-09-12, 20:50:40

I am having problems setting the AO so that it only shows on the edges of object like this faucet. It wants to show up on polygons as well which then highlights the polygons. I have a noise map attached to the max distance at the moment I am guessing that is where the issues lie. Is there a better alternative? or am I just doing it all wrong?

Title: Re: Corona AO is bleeding on polygons
Post by: romullus on 2023-09-12, 21:20:34

Try to increase ray directionality, it should help with unwanted "spillage". You may also want to decrease quality, too high value will only make your render slower, but will not produce any better result, although it has nothing to do with this specific issue.

Title: Re: Corona AO is bleeding on polygons
Post by: Tom on 2023-09-13, 02:23:24

Or you could try using a CoronaCurvature map instead, it should work pretty well.

Title: Re: Corona AO is bleeding on polygons
Post by: cstephens0284 on 2023-09-13, 13:08:49

Thank you! the Curvature map worked super well, once i honed in the colors!

Title: Re: Corona AO is bleeding on polygons
Post by: Tom on 2023-09-13, 13:17:05

Glad I could help. I found AO to be sometimes tricky to deal with.

Title: Re: Corona AO is bleeding on polygons
Post by: brr on 2023-09-14, 17:27:13

Quote from: cstephens0284 on 2023-09-13, 13:08:49

Thank you! the Curvature map worked super well, once i honed in the colors!

You are lucky. When I had the same problems, I could get the desired result with AO and Curvature Map...
(the problem is described here: https://forum.corona-renderer.com/index.php?topic=35473.45 (https://forum.corona-renderer.com/index.php?topic=35473.45)  Reply#48 )