---
title: "Volumetric"
canonical: "https://documentation.chaos.com/space/PHX4MAYA/125737509/Volumetric"
format: markdown
---
This page provides general information about the Volumetric sub-section of the Rendering rollout of Chaos Phoenix.

## **Overview**

---

The Volumetric tab contains volumetric output settings and a parameter controlling the Heat Haze effect when the Render Mode is set to Volumetric Heat Haze.

> Macro (ui-text-box)
> 
> UI Path: ||Select [PhoenixFDSim](https://docs-chaos.atlassian.net/wiki/spaces/PHX4MAYA/pages/125895496)|| **> Attribute Editor > Rendering rollout > Volumetric rollout**


## **Parameters**

---


> Macro (anchor)



### **Example: Heat Haze**

---

> Macro (ui-text-box)
> 
> Heat haze adds refraction at each ray-marching step through the volume. This only affects the camera's view. Heat haze will not affect shadows cast through a volume.

###   
**Render Elements**

---

**Volumetric Material ID** | *materialID* – Material ID color for the [MateralID Render Element ](https://docs-chaos.atlassian.net/wiki/spaces/VMAYA/pages/111739771) when rendering in any of the Volumetric **Render Modes**. When rendering in Isosurface or Mesh **Render Mode**, this will be taken from the assigned material.

**Volumetric ZDepth** | *volZDepth* – Used to generate a z-depth render element in Volumetric **Render Mode**.

**Disable** – Disables generating the render element.  
**Standard Element **- The z-depth of the Phoenix volumes will be written to the V-Ray zDepth render element.  
**Phoenix Element **- The z-depth of the Phoenix volumes will be written to a new Phoenix "zDepth" render element.

**Volumetric Normals** | *volNormals* – Used to generate a render element with volumetric normals in Volumetric **Render Mode**. Since V-Ray does not allow volumetrics to write into the normals RE, the result will be written to a separate RE.

**Disable** – Disables generating the render element.  
**Phoenix Element **– The volumetric normals of the Phoenix volumes will be written to a new "PhoenixFD_normals" render element.