https://github.com/jiaozi158/unitysspathtracingurp

Screen Space Path Tracing for Unity's URP (Universal Render Pipeline).
https://github.com/jiaozi158/unitysspathtracingurp

path-tracing unity universal-render-pipeline urp

Last synced: 3 months ago
JSON representation

Screen Space Path Tracing for Unity's URP (Universal Render Pipeline).

• Host: GitHub
• URL: https://github.com/jiaozi158/unitysspathtracingurp
• Owner: jiaozi158
• License: mit
• Created: 2022-12-09T12:58:36.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2024-11-25T09:35:58.000Z (over 1 year ago)
• Last Synced: 2025-05-25T04:07:17.497Z (about 1 year ago)
• Topics: path-tracing, unity, universal-render-pipeline, urp
• Language: C#
• Homepage:
• Size: 95.7 MB
• Stars: 169
• Watchers: 7
• Forks: 12
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
UnitySSPathTracingURP

=============

 Screen Space Path Tracing for Unity's URP (Universal Render Pipeline).

 **Please read the Documentation and Requirements before using this repository.**

 

Screenshots

------------

**(BoxScene + Reflection Probe Fallback)**

 ![ProbeFallBackOn1](https://github.com/jiaozi158/UnitySSPathTracingURP/blob/main/Documentation/Images/BoxScene/ProbeFallBack1.jpg)

 ![ProbeFallBackOn2](https://github.com/jiaozi158/UnitySSPathTracingURP/blob/main/Documentation/Images/BoxScene/ProbeFallBack2.jpg)

**(Not Included)**

Original Cornell Box

 ![OriginalCornellBox](https://github.com/jiaozi158/UnitySSPathTracingURP/blob/main/Documentation/Images/Others/OriginalCornellBox.jpg)

[Classroom](https://www.blender.org/download/demo-files/) by Christophe Seux (CC0)

 ![Classroom](https://github.com/jiaozi158/UnitySSPathTracingURP/blob/main/Documentation/Images/Others/Classroom.jpg)

[Stormtrooper Star Wars VII](https://www.blendswap.com/blend/13953) by ScottGraham (CC-BY-3.0)

 ![StormTrooper](https://github.com/jiaozi158/UnitySSPathTracingURP/blob/main/Documentation/Images/Others/StormTrooper.jpg)

Refraction (Lit by emission)

 ![Refraction](https://github.com/jiaozi158/UnitySSPathTracingURP/blob/main/Documentation/Images/Others/Refraction.jpg)

Documentation

------------

[Here](https://github.com/jiaozi158/UnitySSPathTracingURP/blob/main/Documentation/Documentation.md).

Requirements

------------

- Unity 2022.2 and URP 14 (enable TAA is recommended)

- Deferred rendering path (OpenGL will always in Forward path)

- Forward rendering path ([need extra setup](https://github.com/jiaozi158/UnitySSPathTracingURP/blob/main/Documentation/ForwardPathSupport.md))

- Multiple Render Targets support (at least OpenGL ES 3.0 or equivalent)

- Lowering down the Render Scale (e.g. "0.5") on mobile devices and use upscaler (e.g. FSR 1.0) to reduce performance cost.

- Use "Refraction Lit" shader graph to render screen space path traced refraction.

License

------------

MIT ![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat)

References

------------

[Three-Eyed-Games GPU-Ray-Tracing-in-Unity](http://three-eyed-games.com/2018/05/03/gpu-ray-tracing-in-unity-part-1/)

[Introduction to Path Tracing - Marc Sunet](https://shellblade.net/files/slides/path-tracing.pdf)

Please see [PathTracing.hlsl](https://github.com/jiaozi158/UnitySSPathTracingURP/blob/main/Assets/Shaders/ScreenSpacePathTracing/PathTracing.hlsl).