Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: tomahawks619 on 2018-12-11, 15:46:25

Title: Bump looking pixelated
Post by: tomahawks619 on 2018-12-11, 15:46:25

Hi everyone,

 I just got corona and I am using the latest version and I downloaded the snow textures from Poliigon's website . For some reason the bump mapping & displacement looks pixelated and very jaggedy. ( I am sorry I don't have the rendering to post but once I get home I can ) . I was wondering if there are any specific setting or material tweaks I need to do ?

I used Poliigon's built in plugin to create the corona material and usually in Vray I had fairly decent result however I wasn't getting the same result in corona.

Please help

Title: Re: Bump looking pixelated
Post by: mferster on 2018-12-11, 18:38:34

Can't really give any suggestions until I see it unfortunately.

Title: Re: Bump looking pixelated
Post by: maru on 2018-12-11, 19:20:30

It's probably the autobump (https://coronarenderer.freshdesk.com/support/solutions/articles/12000050158). If the displacement texture is not good enough (low resolution, low bit depth, etc.), it may produce those jagged edges/pixels.
The solution is to slightly blur the displacement map (as Romullus suggested here: https://forum.corona-renderer.com/index.php?topic=18586.msg137149#msg137149) or disable the autobump feature. To disable autobump, go to devel/debug settings (https://coronarenderer.freshdesk.com/support/solutions/articles/12000021288) and scroll down to the autobump checkbox.