https://github.com/nullsoftware/unitylightning

A 3D lightning experimental shader for Unity URP
https://github.com/nullsoftware/unitylightning

game-development gamedev lightning raymarching shader shaders unity unity3d urp

Last synced: about 2 months ago
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A 3D lightning experimental shader for Unity URP

• Host: GitHub
• URL: https://github.com/nullsoftware/unitylightning
• Owner: nullsoftware
• License: mit
• Created: 2025-06-01T03:13:13.000Z (about 1 year ago)
• Default Branch: master
• Last Pushed: 2025-06-01T08:22:25.000Z (about 1 year ago)
• Last Synced: 2025-07-05T08:40:47.971Z (11 months ago)
• Topics: game-development, gamedev, lightning, raymarching, shader, shaders, unity, unity3d, urp
• Language: C#
• Homepage:
• Size: 33.3 MB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Unity URP 3D Lightning shader

Lightning shader for Unity URP, single bolt with 3D noise  

Renders a single animated lightning bolt with glow effect, defined by start and end positions  

The bolt itself rendered using ray marching algorithm  

Demo:  

![demo](https://github.com/nullsoftware/UnityLightning/blob/master/Demo/recorded-demo.gif?raw=true)  

Shader params:  

* **Bolt Color** (Color) - main color of lightning

* **Start Position** (Vector) - start position of the lightning bolt

* **End Position** (Vector) - end position of the lightning bolt

* **Animation Progress** (0-1) (Float) - the "progress" of the lightning bolt. 

* **Bolt Radius** (Float) - radius of lightning bolt

* **Glow Radius** (Float) - radius of lightning glowing effect

* **Glow Intensity** (Float) - lightning glow intensity

* **Noise Scale** (Float) - noise scale of horizontal lightning 3d displacment. Works best with `0.5` value.

* **Noise Offset** (Float) - noice offset, accepts any value.

* **Noise Amplitude** (Float) - defines how much lightning should be displaced. `0` value will just show straight line.

 

![demo](https://github.com/nullsoftware/UnityLightning/blob/master/Demo/shader-params.gif?raw=true)

**WARNING**: Since this shader uses a ray marching algorithm, I do not recommend to use it in real projects due to performance limitations.