Lǐ - PBRT on Metal

This is simply a repository for my Ray Tracing code.

Requirement

RT_Metal requires MTLArgumentBuffersTier2 device, for example AMD dGPU & eGPU.

Not tested on Apple Silicon.

It may work on macOS 10.15. For compatibility, I am avoiding using new APIs added since macOS 11.

Features:

• Metal Kernel
  • MPSRayIntersector & MPSSVGF
  • FidelityFX Super Resolution 2.0
  • GPUSPPM by Toshiya Hachisuka
    • Parallel Reduction
    • Spatial Hash Grids
  • Stackless BVH traversal on GPU
  • Bindless resources
  • ACES tone, Auto exposure
  • pcg-random
  • Blue noise
• Ray Tracing Gems
  • A Fast and Robust Method for Avoiding Self-Intersection
• Physically Based Rendering, Third Edition
  • Halton Sampler
  • Sobol’ Sampler
  • BVH
    • SAH, Parallel recursion
    • LBVHs, Morton Encoding
  • Microfacet
    • Beckmann
    • TrowbridgeReitz
  • IEEE 754 float rounding error
  • Multiple importance sampling
  • Ray Differential
  • Infinite Area Lights
  • Volume Rendering
    • Homogeneous Medium
    • Heterogeneous Medium
    • BSSRDF
  • Stochastic Progressive Photon Mapping
  • Bidirectional Path Tracing
  • Metropolis Light Transport
  • Support pbrt-v3 file format

Other things to-do:

• Basic GUI & Menu
• Export as PNG file
• Cancelable tasks
• Quaternion camera

References:

• PCG Random
• mini PBRT parser
• TU Wien Rendering
• Dartmouth Rendering Algorithms
• Ray Tracing mini books by Peter Shirley
• Eric Veach, Ph.D. dissertation, December 1997