hey guys,

any pointers on how to approach this, basically I have a vbd with density and vel grids, I have processed the vdb and created a clean mesh, now Im looking to transfer the velocity back onto the surface as an attribute so I can render with vertex motion blur.

I thought it would just be piping the same vdb into slot 2 on convertVDB sop to access the surface properties, but that doesnt seem to funtion as I was hoping.

cheers,
Jeff

append Attribute From Volume SOP and connect your volume to second input
then set Volume to name of your velocity volume
and Attribute Name to: v
and Attribute Type to: Vector

that was exactly the hypothetical node I was looking for, many thanks Tomas

in case it's handy you can also do it in vex using volumesamplev() and volumesample() functions for vector and float volumes respectively