Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: robpayne on 2021-06-01, 11:48:29

Title: Displacement not smooth
Post by: robpayne on 2021-06-01, 11:48:29

Hi,

Is there a reason my displaced material looks faceted? The attached screenshots show a disc that’s been displaced with a height map (shown on the right). It should be smooth, shouldn’t it? The result looks much the same without autobump off.

The height map is baked from a mesh in Substance Designer. I’ve also tried making my own in Cinema (with flat projection gradient) and the result was much the same.

The height map looks smooth in Arnold, although admittedly Arnold displacement works quite differently (it’s subdivided, not per-pixel).

I want to work be able to blend height maps to get the shape I want (i guess a bit like sculpting, but without the hand brush work). Is there a way I can do this with Corona?

Rob

Title: Re: Displacement not smooth
Post by: Beanzvision on 2021-06-03, 11:18:13

Hi Rob, are you able to share this scene with us to investigate further? If so, we have a private uploader that only our staff can access. It can be found here: https://corona-renderer.com/upload

Title: Re: Displacement not smooth
Post by: mmarcotic on 2021-06-04, 09:10:42

Additionally, if you're using v6, you can try out any v7 daily build as we have made some changes to displacement, that resulted (at least for my scenes) in much smoother results.

Thanks and let us know,
Jan

Title: Re: Displacement not smooth
Post by: robpayne on 2021-06-04, 15:44:46

Hi, thanks for getting back to me.

I’ve just tried blurring my height map slightly and the surface now renders smoothly in Corona, so I think the problem originates in Substance instead. With levels in Photoshop it’s apparent the facets were in the height map all along.

Apologies for the false alarm.

Best,
Rob