ft: 8: anti-aliasing

src/main.rs

@@ -19,6 +19,6 @@ fn main() {
     world.push(Sphere::new(Vec3::new(0., 0., -0.1), 0.01));
     world.push(Sphere::new(Vec3::new(0., -100.5, -1.), 100.));
 
-    let c = Camera::new(16. / 9., 400);
+    let c = Camera::new_aa(16. / 9., 400, 2);
     c.render(&world);
 }