> As someone who doesn't do much C++, could `constexpr` actually do this all on its own? yes, some people have written entire constexpr raytracers for instance

> As someone who doesn't do much C++, could `constexpr` actually do this all on its own? yes, some people have written entire constexpr raytracers for instance : https://github.com/tcbrindle/raytracer.hpp https://github.com/tcbrindle/raytracer.hpp