Screen Space Path Tracing for Unity's URP (Universal Render Pipeline).
Please read the Documentation and Requirements before using this repository.
(BoxScene + Reflection Probe Fallback)
(Not Included)
Original Cornell Box
Classroom by Christophe Seux (CC0)
Stormtrooper Star Wars VII by ScottGraham (CC-BY-3.0)
Refraction (Lit by emission)
Here.
- 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)
- 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.
MIT
Three-Eyed-Games GPU-Ray-Tracing-in-Unity
Introduction to Path Tracing - Marc Sunet
Please see PathTracing.hlsl.