---
title: "VRayLightMesh"
canonical: "https://documentation.chaos.com/space/VMAYA/111739754/VRayLightMesh"
format: markdown
---
This page provides information on the V-Ray Mesh Light.


## **Overview**

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<details>
<summary>UI Paths</summary>

||V-Ray Shelf|| > (Right-click) ** Assign Mesh Light Properties icon**  >  **Turn selection into lights**

![image](media://f63552e0-af83-4fc4-871b-3255d2db0e65)


||V-Ray menu|| > **Lights** > **V-Ray Mesh Light**

![VMAYA_MeshLight_UI_VRayMenu.jpg](media://6422d98a-b767-4a5f-9f27-2a9a4e5c97a1)


||Create menu|| > ** V-Ray**  > ** Mesh lights**  > ** Turn selection into lights**

![image](media://0b9d355d-7a68-4162-92a4-36fbe05c2085)
</details>


## **Basic Parameters**

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## **Texture**

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## **Options**

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> Macro (anchor)



### **Example: Invisibility**


The example below shows the difference between an invisible mesh light and visible mesh light. 

> Macro (anchor)



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### **Example: Double-Sided Lights**

** **

This example shows the difference between the Double-Sided option enabled and disabled.


## **Sampling**

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## **Shadows**

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## **Decay**

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The Decay parameters determine how the light fades in and out. The Near decay determines how light fades in. The light isn't at its maximum value at its source, but instead gradually increases until it reaches the Near end. The Far decay determines how light fades out. The light isn't at its maximum value at its end, but instead gradually decreases after the Far decay start.

Decay option is useful for creating hotspots or controlling the length of a "God Rays" effect created with Environment Fog. 

![image](media://018659b0-66cf-43a5-8a6b-6bb3d1e86b3a)



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> Macro (anchor)



### **Example: Near Decay Start**


This example shows the variances achieved by changing the Near decay start parameters only.



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### **Example: Near Decay End**


This example shows the variances achieved by changing the Near decay end parameters only.


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### **Example: Far Decay Start**


This example shows the variances achieved by changing the Far decay start parameters only.



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 > Macro (anchor)



### **Example: Far Decay End**


This example shows the variances achieved by changing the Far decay end parameters only.



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### **Example: Near and Far Decay**


This example shows some artistic lighting results achieved by using both Near and Far decay options.


## **Photon Emission**

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## **Notes**

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- Each VRayLightMesh that you create has a corresponding VRayLightMeshLightLinking node created that has the name *vrayLightMeshProperties_lightlink*. You can use this node to perform light linking on the VRayLightMesh.