Add benchmark with 100 spheres.

Author: rudlorenz

Cargo.toml

@@ -9,14 +9,23 @@ edition = "2018"
 [lib]
 name = "rusttracer"
 path = "src/lib.rs"
+bench = false
 
 [[bin]]
 name = "rusttracer-bin"
 path = "src/main.rs"
+bench = false
 
 [dependencies]
 overload = "0.1.1"
 image = "0.23.12"
 rand = "0.7.3"
 rayon = "1.5.0"
-num = "0.3.1"
+num = "0.3.1"
+
+[dev-dependencies]
+criterion = "0.3.3"
+
+[[bench]]
+name = "100scene"
+harness = false

benches/100scene.rs

@@ -0,0 +1,43 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+use rusttracer::structs::vec3::Vec3;
+use rusttracer::structs::viewport::Viewport;
+
+fn setup_and_run(samples: u32) -> Vec<u8> {
+    let aspect_ratio = 16. / 9.;
+    let img_width = 1200u32;
+    let img_height = (img_width as f64 / aspect_ratio) as u32;
+    let ray_depth = 50;
+
+    let lookfrom = Vec3::new(8., 2., 2.);
+    let lookat = Vec3::new(0., 0., 0.);
+    let vup = Vec3::new(0., 1., 0.);
+    let dist_to_focus = (lookfrom - lookat).length();
+    let aperture = 0.1;
+    let vertical_fov = 60.;
+
+    let viewport = Viewport::new(
+        lookfrom,
+        lookat,
+        vup,
+        vertical_fov,
+        aspect_ratio,
+        aperture,
+        dist_to_focus,
+    );
+
+    viewport.render(
+        img_width,
+        img_height,
+        samples,
+        ray_depth,
+        rusttracer::benchmarking_scene(),
+    )
+}
+
+pub fn criterion_benchmark(c: &mut Criterion) {
+    c.bench_function("100scene", |b| b.iter(|| setup_and_run(black_box(10))));
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);