This repo contains my Rust & Javascript implementations of Ray Tracing in One Weekend as well as benchmarks
Install Rust
Build with cargo build --release
Run with ./target/release/ray_tracer > image.ppm
Crates used : Rand & Rayon for multithreading
The javascript version is available live on my website.
Rendered in 292s with rust (multi threaded). Image = (1200 width, 800 height), pixels sampled 500 times, ray bouncing max depth at 50
Benchmarks are done with images rendered with 400 pixels width, 3 / 2 ratio ( => 266 pixels height), pixels sampled 100 times & ray bouncing max depth set at 50.
Results obtained on a Ryzen 2600
| Run number | Javascript | Rust | Rust multi threaded | Multi threading speedup | Rust multi threaded VS Javascript speedup |
|---|---|---|---|---|---|
| 1 | 236s | 40.20s | 6.68s | ||
| 2 | todo | 39.58s | 6.85s | ||
| 3 | todo | 40.57s | 6.75s | ||
| Average | 236s | 40.12s | 6.76s | x5.935 | x35 |
Results obtained on a mac mini m4 pro 14/20 and ryzen 2600 comparison
| Run number | ryzen 2600 Rust multi threaded | m4 pro Rust multi threaded | m4 pro 14/20 vs ryzen 2600 speedup |
|---|---|---|---|
| 1 | 6.68s | 1.81s | |
| 2 | 6.85s | 1.89s | |
| 3 | 6.75s | 1.84s | |
| Average | 6.76s | 1.85s | x3.65 |
Multi threading speedup of 5.935 on 6 cores CPU => almost perfect scaling & multi threading is extremely fast & easy to set up with Rayon
Javascript is only 35 times slower than multi threaded Rust version, and 5.9 times slower than Rust not multi threaded so all things considered Javascript is interestingly fairly quick
M4 pro 14/20 is fast