Hybrid Ray Tracing for Unity URP pipeline (Unity URP 2023.3 beta+)

Features

• Developed with RenderGraph API
• Path tracing pass Injected as volume component
• Support URP Lit.shader & ComplexLit.shader (Modified)
• Support Hybrid ray tracing (Path Tracing from G-Buffer, Temporal reuse with motion vector)
• Support Bounded VNDF sampling for smith-GGX reflections
• Support temporal reuse ReSTIR (motion vector used)

Pictures

Sponza

2.1 Path Tracing result (raw, 1spp)

2.2 Path Tracing result (trace from G-Buffer, 1spp)

2.3 Path Tracing result (temporal ReSTIR, 1spp)

2.4 Ground Truth (8192spp)