Vulkan ReSTIR PT

This is another Vulkan ray tracing project, aiming for rebuilding EIDOLA completely from scratch and adding ReSTIR PT (GRIS) for indirect illumination.

Build and Run

• Clone git clone [this repo] --recursive
• Run ./build.bat (for Windows only)
• Extract .zip test scene files in ./res/model/
  • VeachAjar from paper's modified version of 'Veach Ajar' scene
  • You will need to copy ./res/ to your IDE's working directory for the resources to be correctly loaded

Progress

• Standard path tracing with NEE and MIS
• ReSTIR DI
  • Temporal reuse
  • Spatial reuse
• ReSTIR GI
  • Temporal reuse
  • Spatial reuse
• ReSTIR PT
  • Reconnection vertex generation
  • Shift mapping
    • Reconnection
    • Random Replay
    • Hybrid
  • Temporal reuse
  • Spatial reuse
  • MIS
• Support for both ray tracing pipeline & ray query
• Batched G-buffer draw calls and bindless resource fetching
• Cache & memory improvement as RTXDI
• Improve scene definition & GLTF loader
• Async command recording & submission
• Denoiser?
• Make separate ZVK Vulkan wrapper
• Direct3D 12 backend? (Making this project a multi-backend ray tracing engine)

Algorithm

Reusing Paths

Path Sample Generation

Result

ReSTIR PT (Not all correct)

Compared to Paper

More