Getting VDB Color Data

[CinnamonMetal]

When converting polygonal object to VDB and one wants the Cd data, is it necessary to get the attribute to transfer to the VDB from within the VDB from Polygons SOP ?

For example, the attribute I retrieve is the point.Cd which is of Vector Color and then giving it a name ?

Also when converting a VDB back to polygons how do I get the color data back on the polygon mesh from the Convert VDB node; using the group, @name=<NameOfAttribute> ?

[flcc]

Check this discusion
It was about uv, but it's exactly the same principle with colors.

 

[CinnamonMetal]

Why is the actual color information not visible in the viewport ? The Cd attribute did transfer to the polygon object, converted polygon object I tired an attribute transfer but that doesn't work either.  Transfer from the attribute vop to after the attribute from volume.

[flcc]

I didn't really understand if it work or not for you.

Can you post a file ?

[CinnamonMetal]

Fluid_Liquid_Sphere.hipnc

[flcc]

Here is a fix
You nedd to delete the surface Volume. Don't know Why simplly use @name=ColorA is not good enough.
You don' need attribute transfert as AttributeFromVolume do the job

Fluid_Liquid_Sphere Fix.hipnc

Edited March 22, 2020 by flcc

[flcc]

I finally find the correct way.
On the AttributeFromVolume just use your color Volume name (ColorA) in the Volume field. not @name=Color A in the group Field.
As is, the delete sop is not needed anymore
 

[CinnamonMetal]

Thanks