---
title: "Volume Material"
canonical: "https://rmanwiki-25.pixar.com/space/RFH25/22642771/Volume%20Material"
format: markdown
---
![image](media://9e2c1116-73fc-4154-86d8-9383dee81eff)

### Adding Material

In the MAT pane, create a PxrMaterialBuilder, dive inside and create a [PxrVolume](https://renderman.atlassian.net/wiki/spaces/REN20/pages/21561361) BxDF

### Assigning Material

Drag your PxrVolume VOP to the Material parameter of your volume OBJ.

![image](media://a30480f4-6e38-4118-b43e-955cea0e7686)


> ✅ For **deformed** volume, velocity and density must be wired using PxrPrimVar.  This is because 'v' in VDB is a built-in variable.
> ✅ 
> ✅ ![image](media://8ded2358-5527-4c0d-a7e2-260a918cb5a4)


 

> Macro (include)