Scene VDB Limit

V-Ray V-Ray for Maya Issues
1

Hey everyone,

Is there some sort of limit of how many vdbs can be in a scene at once?
As soon as we add more than 5 vdbs to a scene we get a ton of really large and obnoxious noise that we can’t seem to find a way to get rid of.

The current workaround is to render the scene in passes with only 5 clouds in each, but this is pretty tedious and time consuming.

Has anyone encountered this before?

The reason is that we’re doing some layouts with a bunch of cloud vdbs from Houdini (single frame vdbs, not vdb sequences).

Cheers

2

Could you please attach or send us an example scene?

3

Sounds like adaptive lights are on, but no lc used.

4

I thought that initially, but there’s no GI being used in the scene, and bumping up the light samples (even by a lot) seems to do nothing to affect the noise.

5

Thanks for the scene. It definitely doesn’t look right, I’ll make a note for the devs to look into this.

6

Thanks for that :slight_smile:

7

Just to add for the devs: I noticed that if i use PROGRESSIVE rendering instead of BUCKET rendering the noise issue disappears. So its definitevly a bucket rendering method issue.

cheers,
PK

8

Thanks for sharing! I’ve added this as a note.

9

Disabling Phoenix FD Light Cache can be used as a workaround.