pixar_rt

follow along with Postcard Pathtracer

macos build

clang -o card -O3 raytracer.cpp
time ./card > pixar.ppm

windows build

git clone https://github.com/InterruptSpeed/pixar_rt
cd pixar_rt
mkdir build64
cd build64
cmake -G "Visual Studio 15 2017 Win64" ..
cmake --build . --config Release
cd Release
pixar_rt.exe > pixar.ppm