---
title: "Volume Material"
canonical: "https://rmanwiki-27.pixar.com/space/RFH27/544644370/Volume%20Material"
format: markdown
---
![image](media://c1af1410-772e-41e9-8a75-87458190a3bc)

### 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://55bfbd8d-7696-4701-98b2-46765480ffcd)


> ✅ For **deformed** volume, velocity and density must be wired using PxrPrimVar.  This is because 'v' in VDB is a built-in variable.
> ✅ 
> ✅ ![image](media://c6265ac5-d842-4392-9ebe-cc53c96c1bfd)


 

> Macro (include)