KittlesPT - A CUDA PathTracing renderer library

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A casual hobby project towards creating an interactive path-tracing renderer running on GTX GPUs.

Features

• PBR texture inputs for materials (GLTF 2.0 specifications parity)
• Multiple Importance Sampling
• Nishita Atmosphere model (Single-Scattering)
• Bloom / Veil (Kawase)
• Two Level Acceleration Structure (BVH2)
• Runtime mesh transformations
• Unified BSDF(Conductor & Opaque/Transparent Dielectrics)
• Temporal Accumulation & Motion Vectors Generation
• Physical camera controls (ISO, aperture,shutter speed etc)
• Auto-exposure via Scene Histogram
• AgX tonemapping

External Dependencies

• CUDA 12.4+ SDK

Libraries used

• GLAD - OpenGL loader
• GLM - 3D maths library
• Optional (SampleApp)
  • GLFW - OpenGL windowing library
  • Dear ImGUI - GUI library
  • stb - Image loading library
  • TinyGLTF - GLTF format load/parse library

Building

Cmake will be added in future. Currently the solution is Visual Studio only. The solution consists of two projects, the core KittlesPT static library project, and a SampleApp executable project demonstrating the use of KittlesPT renderer API.

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