[dahart]

> when i wrote my very first ray tracer it didn't take me an entire weekend

It’s just a catchy title. You can implement the book in an hour or two, if you’re uncurious, or a month if you like reading the research first. Also maybe there are meaningful differences in the feature set such that it’s better not to try to compare the time taken? The Ray Tracing in One Weekend book does start the reader off with a pretty strong footing in physically based rendering, and includes global illumination, dielectric materials, and depth of field. It also spends a lot of time building an extensible and robust foundation that can scale to a more serious renderer.