Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] Bug Reporting => Topic started by: Misha_80 on 2022-11-12, 12:15:27

Title: Corona Volume Grid ( vdb ) problem or bug
Post by: Misha_80 on 2022-11-12, 12:15:27

When   Corona Volume Grid   bounding box  touch ( pierce )   plain   wrong  shading  on  plain.
If not  touch ( pierce )  - all  good .
Look at pictures.
Its bug or what  ?

Corona 9.  С4D  R25.120

Title: Re: Corona Volume Grid ( vdb ) problem or bug
Post by: Beanzvision on 2022-11-15, 07:55:24

Hi there, this is an old issue that we are aware of and have it logged.
(Internal ID=910407615)

The workaround is to ensure the bounding box does not intersect with other objects.

Title: Re: Corona Volume Grid ( vdb ) problem or bug
Post by: ja_brzoza on 2022-11-21, 17:53:50

Hi, I came across the same issue. I'd appreciate if you could fix that soon. In the current state it would require a lot of postproduction to make it usable, in some scenarios.
Nevertheless, possibilty of a cooperation between C4D Pyro system and Corona is great!

Best,
Lukasz

Title: Re: Corona Volume Grid ( vdb ) problem or bug
Post by: MattQuezza on 2022-11-24, 17:34:04

Hey there,

I've found it seems to be linked to IOR of the intersecting material - may be a fix here somewhere

Title: Re: Corona Volume Grid ( vdb ) problem or bug
Post by: Misha_80 on 2022-12-24, 11:50:30

Quote

Hi there, this is an old issue that we are aware of and have it logged.
(Internal ID=910407615)

The workaround is to ensure the bounding box does not intersect with other objects.

Corona 9 Hot fix 1  come out. And this bug still here  .
Why you dont fix this bug  so long time ?  It was in  Corona 8 and may bee  before  8 .

Quote

The workaround is to ensure the bounding box does not intersect with other objects.

In most cases  its  not  usable . Because  vdb object is in the middle of  bounding box. And I need to put it close to the ground  or  wall .