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6 changed files with 28 additions and 217 deletions

122
Cargo.lock generated
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@ -2,69 +2,12 @@
# It is not intended for manual editing.
version = 3
[[package]]
name = "autocfg"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
name = "cfg-if"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
name = "crossbeam-channel"
version = "0.5.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4c02a4d71819009c192cf4872265391563fd6a84c81ff2c0f2a7026ca4c1d85c"
dependencies = [
"cfg-if",
"crossbeam-utils",
]
[[package]]
name = "crossbeam-deque"
version = "0.8.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6455c0ca19f0d2fbf751b908d5c55c1f5cbc65e03c4225427254b46890bdde1e"
dependencies = [
"cfg-if",
"crossbeam-epoch",
"crossbeam-utils",
]
[[package]]
name = "crossbeam-epoch"
version = "0.9.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "07db9d94cbd326813772c968ccd25999e5f8ae22f4f8d1b11effa37ef6ce281d"
dependencies = [
"autocfg",
"cfg-if",
"crossbeam-utils",
"memoffset",
"once_cell",
"scopeguard",
]
[[package]]
name = "crossbeam-utils"
version = "0.8.10"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7d82ee10ce34d7bc12c2122495e7593a9c41347ecdd64185af4ecf72cb1a7f83"
dependencies = [
"cfg-if",
"once_cell",
]
[[package]]
name = "either"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
name = "getrandom"
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@ -76,46 +19,12 @@ dependencies = [
"wasi",
]
[[package]]
name = "hermit-abi"
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source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
dependencies = [
"libc",
]
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name = "libc"
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dependencies = [
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"libc",
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@ -152,44 +61,13 @@ dependencies = [
"getrandom",
]
[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"autocfg",
"crossbeam-deque",
"either",
"rayon-core",
]
[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"crossbeam-channel",
"crossbeam-deque",
"crossbeam-utils",
"num_cpus",
]
[[package]]
name = "rustracer"
version = "0.1.0"
dependencies = [
"rand",
"rayon",
]
[[package]]
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version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
name = "wasi"
version = "0.11.0+wasi-snapshot-preview1"

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@ -7,4 +7,3 @@ edition = "2021"
[dependencies]
rand = "0.8.5"
rayon = "1.5.3"

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@ -1,13 +1,8 @@
use std::sync::Mutex;
use std::time::Instant;
use crate::camera::Camera;
use crate::hittable::{Hittable, Sphere};
use crate::output::{Output, P3};
use crate::ray::Ray;
use crate::vec3::{Color, Point3, Vec3};
use rand::distributions::{Distribution, Uniform};
use rayon::iter::{IntoParallelIterator, ParallelIterator};
use crate::material::{Dielectric, Lambertian, Material, Metal};
mod vec3;
@ -15,10 +10,9 @@ mod ray;
mod hittable;
mod material;
mod camera;
mod output;
fn random_scene() -> Vec<Box<dyn Hittable + Sync>> {
let mut world:Vec<Box<dyn Hittable + Sync>> = Vec::new();
fn random_scene() -> Vec<Box<dyn Hittable>> {
let mut world:Vec<Box<dyn Hittable>> = Vec::new();
let material_ground = Material::Lambertian(Lambertian::new(Color::new(0.5, 0.5, 0.5)));
let ground = Sphere {
@ -58,37 +52,16 @@ fn random_scene() -> Vec<Box<dyn Hittable + Sync>> {
world.push(sphere);
}
}
let material1 = Material::Dielectric(Dielectric::new(1.5));
world.push(Box::new(Sphere {
center: Point3::new(0.0, 1.0, 0.0),
radius: 1.0,
material: material1
}));
let material2 = Material::Lambertian(Lambertian::new(Color::new(0.4, 0.2, 0.1)));
world.push(Box::new(Sphere {
center: Point3::new(-4.0, 1.0, 0.0),
radius: 1.0,
material: material2
}));
let material3 = Material::Metal(Metal::new(Color::new(0.7, 0.6, 0.5), 0.0));
world.push(Box::new(Sphere {
center: Point3::new(4.0, 1.0, 0.0),
radius: 1.0,
material: material3
}));
world
}
fn main() {
// Image
const ASPECT_RATIO: f64 = 3.0 / 2.0;
const IMAGE_WIDTH: usize = 1200;
const IMAGE_HEIGHT: usize = (IMAGE_WIDTH as f64 / ASPECT_RATIO) as usize;
const SAMPLES_PER_PIXEL: i32 = 500;
const IMAGE_WIDTH: i32 = 1200;
const IMAGE_HEIGHT: i32 = (IMAGE_WIDTH as f64 / ASPECT_RATIO) as i32;
const SAMPLES_PER_PIXEL: i32 = 10;
const MAX_DEPTH: i32 = 50;
let hh = IMAGE_HEIGHT;
let look_from = Point3::new(13.0, 2.0, 3.0);
let look_at = Point3::new(0.0, 0.0, 0.0);
@ -106,38 +79,26 @@ fn main() {
// World
let world= random_scene();
let between = Uniform::from(0.0..1.0);
println!("P3\n{} {}\n255", IMAGE_WIDTH, IMAGE_HEIGHT);
let start = Instant::now();
let mut pixels = vec![0; IMAGE_WIDTH * IMAGE_HEIGHT * 3];
let bands: Vec<(usize, &mut [u8])> = pixels.chunks_mut(3).enumerate().collect();
let count = Mutex::new(0);
bands.into_par_iter().for_each(|(i, pixel)| {
let row = IMAGE_HEIGHT - (i / IMAGE_WIDTH) - 1;
let col = i % IMAGE_WIDTH;
let mut rng = rand::thread_rng();
let mut color = Color::default();
(0..SAMPLES_PER_PIXEL).for_each(|_s| {
let random_number = between.sample(&mut rng);
let u = (col as f64 + random_number) / (IMAGE_WIDTH - 1) as f64;
let v = (row as f64 + random_number) / (IMAGE_HEIGHT - 1) as f64;
let ray = cam.get_ray(u, v);
color += ray.pixel_color(&world, MAX_DEPTH);
});
let bytes = color.into_bytes(SAMPLES_PER_PIXEL);
pixel[0] = bytes[0];
pixel[1] = bytes[1];
pixel[2] = bytes[2];
if i % 100 == 0 {
let mut rem = count.lock().unwrap();
let percent_done_before = 100 * *rem / (IMAGE_WIDTH * IMAGE_HEIGHT);
*rem += 100;
let percent_done_after = 100 * *rem / (IMAGE_WIDTH * IMAGE_HEIGHT);
if percent_done_before != percent_done_after {
eprint!("\rProgress: {}% ", percent_done_after);
let between = Uniform::from(0.0..1.0);
let mut rng = rand::thread_rng();
for j in (0..IMAGE_HEIGHT).rev() {
eprint!("\rScanlines remaining: {} ", j);
for i in 0..IMAGE_WIDTH {
let mut color = Color::default();
for s in 0..SAMPLES_PER_PIXEL {
let random_number = between.sample(&mut rng);
let u = (i as f64 + random_number) / (IMAGE_WIDTH - 1) as f64;
let v = (j as f64 + random_number) / (IMAGE_HEIGHT - 1) as f64;
let ray = cam.get_ray(u, v);
if i == 200 && (j == 112 || j == 113) {
let tt = 0;
}
color += ray.pixel_color(&world, MAX_DEPTH);
}
color.write_color(SAMPLES_PER_PIXEL);
}
});
P3::write("imc.ppm", &pixels, IMAGE_WIDTH, IMAGE_HEIGHT).expect("Error writing image: {}");
eprintln!("\nDone. Time: {}ms", start.elapsed().as_millis());
}
eprintln!("\nDone");
}

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@ -1,19 +0,0 @@
use std::{fs::File, io::{Error, Write}};
pub trait Output {
fn write(filename: &str, pixels: &Vec<u8>, width: usize, height: usize) -> Result<File, Error>;
}
pub struct P3 {}
impl Output for P3 {
fn write(filename: &str, pixels: &Vec<u8>, width: usize, height: usize) -> Result<File, Error> {
let mut file = File::create(filename)?;
file.write(format!("P3\n{} {}\n255\n", width, height).as_bytes())?;
let lines: Result<Vec<usize>, Error> = pixels
.chunks(3)
.map(|chunk| format!("{} {} {}\n", chunk[0], chunk[1], chunk[2]))
.map(|line| file.write(line.as_bytes()))
.collect();
lines.map(|_v| file)
}
}

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@ -23,7 +23,7 @@ impl Ray {
}
pub fn direction(&self) -> Vec3 { self.direction }
pub fn origin(&self) -> Point3 { self.origin }
pub fn pixel_color(&self, world: &Vec<Box<dyn Hittable + Sync>>, depth: i32) -> Color {
pub fn pixel_color(&self, world: &Vec<Box<dyn Hittable>>, depth: i32) -> Color {
if depth <= 0 {
return Color::default();
}
@ -50,7 +50,7 @@ impl Ray {
}
fn hit_world<'material>(
&self,
world: &'material Vec<Box<dyn Hittable + Sync>>,
world: &'material Vec<Box<dyn Hittable>>,
t_min: f64,
t_max: f64,
) -> Option<HitRecord<'material>> {

View File

@ -105,12 +105,12 @@ fn test_refract() {
let n = Point3::new(-1.0, 0.0, 0.0);
let etai_over_etat = 1.0;
let expected = Point3::new(0.0, 1.0, 0.0);
let actual = uv.refract( &n, etai_over_etat);
let actual = uv.refract_orig( &n, etai_over_etat);
assert_eq!(actual, expected);
}
impl Color {
fn tone_map(self: &Color, samples_per_pixel: i32) -> (f64, f64, f64) {
pub fn write_color(self: Color, samples_per_pixel: i32) {
let scale = 1.0 / samples_per_pixel as f64;
let r = f64::sqrt(scale * self.x);
let g = f64::sqrt(scale * self.y);
@ -118,16 +118,8 @@ impl Color {
let r = 256.0 * f64::clamp(r, 0.0, 0.999);
let g = 256.0 * f64::clamp(g, 0.0, 0.999);
let b = 256.0 * f64::clamp(b, 0.0, 0.999);
(r, g, b)
}
pub fn write_color(self: &Color, samples_per_pixel: i32) {
let (r, g, b) = self.tone_map(samples_per_pixel);
println!("{} {} {}", r as i32, g as i32, b as i32);
}
pub fn into_bytes(self: &Color, samples_per_pixel: i32) -> Vec<u8> {
let (r, g, b) = self.tone_map(samples_per_pixel);
vec![r as u8, g as u8, b as u8]
}
}
impl Default for Vec3 {