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
  • [x] GPUSPPM by Toshiya Hachisuka
    • [x] Parallel Reduction
    • [x] Spatial Hash Grids
  • [x] Stackless BVH traversal on GPU
  • [x] Bindless resources
  • [x] ACES tone, Auto exposure
  • [x] pcg-random
  • [ ] Blue noise
• [ ] Ray Tracing Gems
  • [x] A Fast and Robust Method for Avoiding Self-Intersection
• [ ] Physically Based Rendering, Third Edition
  • [ ] Halton Sampler
  • [x] Sobol’ Sampler
  • [ ] BVH
    • [x] SAH, Parallel recursion
    • [ ] LBVHs, Morton Encoding
  • [x] Microfacet
    • [x] Beckmann
    • [x] TrowbridgeReitz
  • [ ] IEEE 754 float rounding error
  • [x] Multiple importance sampling
  • [ ] Ray Differential
  • [ ] Infinite Area Lights
  • [ ] Volume Rendering
    • [x] Homogeneous Medium
    • [x] Heterogeneous Medium
    • [ ] BSSRDF
  • [x] 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
• [x] Quaternion camera

References:

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