VDB volume and z-depth

[Stomper]

Hello all. I have a problem with z-depth pass on scene with clouds from vdb volume. When I render z-depth pass I didn't see clouds. Any solutions for that? Thank's for help.

[bepeg4d]

Hi Stomper,
since in volumes there is no geometry, the standard info passes cannot work with them.
You need to use the Render Layer passes with volumes:
Render Layer Passes
ciao beppe

[Stomper]

Hi Stomper,
since in volumes there is no geometry, the standard info passes cannot work with them.
You need to use the Render Layer passes with volumes:
Render Layer Passes
ciao beppe

Hi bepeg4d, thx for you reply! I know that render layers can work with vdb volumes but I need to have a z-dept pass on scene where I have vdb clouds. I don't understand what should I do to make z-dept pass from render layer? Hope you will explain me that case. Waiting for you reply

[bepeg4d]

Hi Stomper,
do you mind to share some screenshot of what you need to achive exactly?
ciao beppe

[thanulee]

I think he means that in Z pass the VDB are not visible. Correct? I am interested too in this. cheers

[Mibu]

I would need Z-Depth for vdb too. Anybody find a solution?

[roeland]

With the latest 3.08 versions you can enable the Volume Z-depth front and back in the beauty passes. The info passes don't render any volumes.

[Mibu]

Yes, there is that option but it looks like a mask, it doesn't create any gradient. Maybe I am doing something wrong, but it not works for me.
SOLVED: In Tonemap type (under Render Passes) has to be "Tonemapped" no "Linear"

[jeremyshin]

Sorry to re-open the subject but, could somebody explain how to composite a Volume pass with Z-depth front and back ?
Also why is there a Front an Back z-depth for volume ? It is confusing to me and Octane manual doesn't cover this topic.
Thanks for your time.
J.