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Volumetric Clouds

This page demonstrates the Clouds Lighting plugin usage for default Volumetric Clouds inside the Unreal Engine.


  • Blank project is created and opened.
  • Clouds Lighting System plugin is enabled.
  • Show Engine Content is enabled in the content browser settings.
  • Show Plugin Content is enabled in the content browser settings.


1. Open the cloud material

In the level Outliner select 'VolumetricCloud' item, in Details panel open the Cloud Material asset and navigate to the root material asset.

2. Add Light Material Function

Drag and drop a Light Material Function into a clouds material and connect it to Emissive Color. Apply material changes.

3. Add necessary light actors

Add Lighting System Actor and Point Light Source into the level, adjust light position and parameters.

4. Add extinction

You can see the light is too smooth, so it is necessary to multiply Light Material Function by clouds extinction:

  1. Navigate back to the clouds material and add Multiply node.
  2. Connect Light Material Function with the Multiply node's A, and Extinction value with the B.
  3. Connect the value of Multiply node to Emissive Color.


It is recommended to add a CheapContrast or Power node between Extinction and Multiply node to make the cloud shape more visible. The Power value is design matter.