Ray Tracing, Apple Metal, Swift Programming, Gpu Rendering, Wwdc 2020.
= end.uptimeNanoseconds — start.uptimeNanoseconds // <<<<< Difference in nano seconds (UInt64) let timeInterval = Double(nanoTime) / 1_000_000_000 // Technically could overflow for long running tests print(“Time to execute, without saving the file: \(timeInterval) seconds”) //7 copying the image to