Hi there, this is a swift version of Peter Shirley's Ray Tracing In One Weekend tutorial. You can access that tutorial here:
https://raytracing.github.io/books/RayTracingInOneWeekend.html
This project is a work in progress, it has all the functionality of the aforementioned tutorial, and we'll add in more functionality from the other tutorials. This project uses Metal to draw the resulting texture on screen, and there's some basic multi-threading of the image.