RayTracer

CUDA Ray Tracer

Building

Available targets for make:

• RayTracer - multithreaded CPU implementation
• RayTracerCuda - CUDA implementation (requires CUDA libraries installed)

Debug

mkdir Debug
cd Debug
cmake -DCMAKE_BUILD_TYPE=Debug ..
make

Release

mkdir Release
cd Release
cmake -DCMAKE_BUILD_TYPE=Release ..
make

CMake flags

• CMAKE_BUILD_TYPE=[Debug|Release] - target build type
• CUDA_HOST_COMPILER=path/to/gcc - path to CUDA-compatible compiler, by default points to CMAKE_C_COMPILER
• CUDA_TOOLKIT_ROOT_DIR=path/to/cuda - path to CUDA installation directory

Running

Enter the build directory:

# CPU
./RayTracer > image.ppm
# CUDA, requires raytracing.ptx to run
./RayTracerCuda > image.ppm

RayTracer config file

Each program can read config from file, for example:

cd Release
./RayTracer ../resources/RayTracerConfig.example > image.ppm

See format of the config file in resources/RayTracerConfig.example. If no file is specified, default config is used (same as in the example config).

Contributing

All source files should comply with .clang-format configuration. Run clang-format on each file before commit or add git hook to run it automatically:

cp -i resources/pre-commit .git/hooks/

and follow displayed instructions.