---
title: "Volume Material"
canonical: "https://rmanwiki-26.pixar.com/space/RFH26/19268183/Volume%20Material"
format: markdown
---
![image](media://eb70f4d5-954b-400b-9d77-9562a8a8af20)

### Adding Material

In the MAT pane, create a PxrMaterialBuilder, dive inside and create a [PxrVolume](https://renderman.atlassian.net/wiki/spaces/REN26/pages/19661555) BxDF

### Assigning Material

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

![image](media://f5f2c078-94d2-4a7e-945b-a67ea4c99706)


> ✅ For **deformed** volume, velocity and density must be wired using PxrPrimVar.  This is because 'v' in VDB is a built-in variable.
> ✅ 
> ✅ ![image](media://5bd0ead8-36e9-47a3-9157-ca2f03cf12ff)


 

> Macro (include)