---
title: "Fire Lights"
canonical: "https://documentation.chaos.com/space/VC4D/116853675/Fire%20Lights"
format: markdown
---
This page provides general information about the Fire Lights sub-section of the Rendering tab of the V-Ray Volumetric Grid.

## **Overview**

---

The Fire Lights rollout controls how the fire casts light on the other scene objects and on the Volume Grid's own Smoke. When using Global Illumination (GI), the fire illuminates everything automatically, but the rendering takes quite a long time. Turning on **Create Fire Lights** simulates GI by placing light sources in the bright parts of the fire, which gives similar results and renders much faster. The color and power of these lights are adjusted automatically but can be overridden.

The smoke illumination caused by the Simulator's own fire can be controlled with the **Self Shadowing** option. If enabled, the smoke obstructs the path of light from the fire, creating a much more realistic look but decreasing rendering performance. To regain the rendering speed, set **Self Shadowing** to **Grid-based** and decrease the **Light Grid Resolution (%) **parameter to reduce the number of generated lights.

> Macro (ui-text-box)
> 
> All Fire Lights options are ignored when rendering with V-Ray GPU. Enable Global Illumination from the [V-Ray Settings](https://docs-chaos.atlassian.net/wiki/spaces/VC4D/pages/116853270) if you need the Smoke and/or the scene to be illuminated by the fire.


## **Parameters**

---


---

> Macro (anchor)



### Example: Self-shadowing



---

> Macro (anchor)



### Example: Grid Reduction