ConstExpr RayTracer (CERT)

Behold, the worlds fastest (runtime) raytracer!

Through the power of constexpr, we can trace rays in a place that was never meant to ray trace, the compiler.

Currently in a proof of concept state, more features are to be added in the future.

Example image output.

Build Requirements

Requires a C++20 ready compiler to build. Tested with clang-10.

Requires a recent version of cmake. Tested with cmake 3.13.4

Building

Make sure you are running a C++20 capable compiler. Easiest way is to check by running gcc -std=c++2a or clang -std=c++2a. If the std=c++2a is unrecognized, a newer C++ compiler is needed.

To clone and build

git clone https://github.com/cdgiessen/CERT.git
mkdir build
cd build
cmake ../CERT

Running

Once build, run the 'cert' executable located in the build directory. The output.ppm should of been created.

Credits

Based of the venerable RayTracingInOneWeekend