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prekabreki

VDB banding/stepping issue

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Posted (edited)

I was wondering if anyone had a quick answer to this issue.

I'm applying some cloud noise to a cloud and then converting it to geo.

No matter how high-res I make it I still get a lot of banding (or stepping?) after I apply the noise.

 

Am I not approaching this right? I attached a hip file if anyone wants to take a look.

 

9v5uIew.png

2GbEIXh.png

 

vdb_noise.hip

Edited by prekabreki

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Try dropping down some smooth nodes. Here I pre-smoothed the VDB then followed that up with a polygon smooth after the convert.

Screenshot from 2018-03-08 08-41-21.png

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Thanks, that works surprisingly well.

Is the banding/stepping just something one has to get used to when working with VDBs like this then?

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Posted (edited)

Yes, I think of VDBs as shapes made of lego bricks. Make bricks smaller or move camera farther away.

Edited by Atom

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