October 2022

Description: A GPU-accelerated physically-based path tracer written with CUDA and C++. Parallelizes several steps such as camera ray generation, ray intersections, shading, and writing to the final output image.

See Github for full technical details and more images.

Features:

• Ideal diffuse, perfectly specular, imperfectly specular, and refractive surfaces
• Path continuation/termination with stream compaction
• Material sorting
• Caching first bounce intersections
• Acceleration structures
  • Linear Bounding Volume Hierarchy (LBVH)
  • Bounding Volume Hierarchy (with Midpoint and SAH split methods)
• Russian roulette ray termination
• Depth-of-field
• Stochastic sampled anti-aliasing
• Arbitrary mesh loading (with bounding box culling)
• Reinhard operator and gamma correction (conversion to sRGB)