Simple raytracer using zig

Project used to introduce me to Zig.

Greatly inspired by Ray Tracing in a Weekend. Added multi-thread and other stuffs.

Generated in 4200s on a Qualcomm X Elite 80.

Parameters

They are all in camera.zig.

// Resolution
const aspect_ratio: f64 = 16.0 / 9.0;
const image_width: usize = 2560; // Possible 128, 256, 512, 1024, 1280, 1920, 2560, 3840, 7680
const image_height: usize = image_width / aspect_ratio;

// Ray precision
const samples_per_pixel = 500;
const max_depth = 50;

// Camera lenses
const defocus_angle = 0.6;
const focus_dist = 10;
const vfov = 20;

// Camera position
const lookfrom = vec3{ 13, 2, 3 };
const lookat = vec3{ 0, 0, 0 };
const vup = vec3{ 0, 1, 0 };

// Number of thread to use
const n_threads_to_spawn = 100;