CUDA Path Tracer

A tiny CUDA Path Tracer

Feature

1. Build BVH-Box in parallel using Morton Code
2. Expand 32-bit Morton Code to 64-bit
3. No material implement, just use diffuse color
4. Very fast compared to using CPU

How to build

mkdir build
cd build
cmake ..
cmake --build . --config Release

Time cost

Resolution	SPP	Max Reflection	GPU	Time
1024x1024	128	8	3060ti	29.5s
512x512	64	7	3060ti	3.7s
256x256	32	6	3060ti	0.4s

Compiler compatibility

MSVC >= 19.20