Vray distance map like shader in Arnold?

[astrofalcon]

How would one create a distance to a surface shader in Arnold? I want to be able to fade out the density of a volume based on the distance to the geometry surface.

Thanks!

- Shawn

[Anonymous]

You'd want to convert the mesh to a signed distance field VDB, such as with the VDB From Polygons node in Houdini. You could copy the surface attribute into your volume and use it for shading. Short of that, I'm not sure there'd be an easy way for you.