URPFog
Simple Post Processed Raymarched Fog in Unity's Universal Render Pipeline (URP)
- Scene:
- Assets/Scenes/ExampleScene.unity
- Shaders:
- Assets/URPFog/Shaders/Fog.hlsl
- Assets/URPFog/Shaders/DistanceFog.shader
- Render Setting and Material:
- Assets/URPFog/DistanceFo
Note: The Render Pass Feature assignment seems to disappear occasionally. If you are not seeing fog, make sure
Assets/URPFog/DistanceFog/URPVolumeFogRenderer RenderFeature has a feature created from 'VolumeFog`
It is not intended as a production-ready volume fog solution, but as straightforward example of:
- Extending the ScriptableRendererFeature.
- Accessing Lights, Depth and Shadow
- Creating and Accessing 3D Textures
In the future I'd like to add:
- Dynamic compute shader generation of the 3D Noise texture based on user settings (changes to noise params, texture dimensions, etc.)
- Better (but still simple) fog implementation with artist friendly controls
- Fade to Sky color
- Optimization of the March loop, understanding how and when loops can be unrolled.
This project is based on work from these other GitHub projects:
IQ's Fog Article and Shader Toy shaders
Simple Mad's VolumetricLights
Unity's UniversalRenderingExamples
Volumetric Textures generated with TextureGenerator