CUDA Path Tracer with Denoiser: GPU Based Renderer

The path tracer uses CUDA to render image parallelly, based on Monte Carlo path tracing technique to render a scene and denoise the originally rendered images with the A-trous wavelet filter.

Features

• Ray sorting by material
• Ideal Diffuse Shading and Perfect Specular Reflection
• Stream Compaction and Cache first bounce
• Refraction with Frensel effects using Schlick’s approximation.
• Physically-based depth-of-field
• Stochastic Sampled Antialiasing
• Arbitrary mesh loading and rendering glTF files with toggleable bounding volume intersection culling
• Better hemisphere sampling methods
• Direct lighting
• Motion blur by averaging samples at different times in the animation
• Denoise with A-trous wavelet filter

Rendered Images

• Kirby
• Lion
• Spitfire
• Galleon
  
• Goku
  
• Texture mapping and bump mapping

• Image with Denoiser

References

• Matt Pharr, Wenzel Jakob, and Greg Humphreys. Physically Based Rendering: From Theory To Implementation
• Header only C++ tiny glTF library
• Edge-Avoiding A-Trous Wavelet Transform for fast Global Illumination Filtering
• ocornut/imgui - https://github.com/ocornut/imgui
• Gaussian filter - https://en.wikipedia.org/wiki/Gaussian_blur