/java-ray-tracing

Java implementation of Peter Shirley's Ray Tracing in One Weekend book.

Primary LanguageJava

Ray Tracing

Overview

This is my take on Peter Shirley's Ray Tracing in One Weekend book.

This project uses Java and is intended to serve as a reference point in the performance comparison (see below).

Build & Run this project

  1. Clone the repository
  2. Optional: Change sample and thread count in src/main/java/dev/twentyfive/raytracing/RayTracing.java
  3. Build the project 
    ./gradlew jar
  4. Run the jar file 
    java -jar ./build/libs/java-ray-tracing-1.0.0.jar

Performance

I've already implemented Peter Shirley's ray tracing in various programming languages running on CPU & GPU and compared their performance.

The performance was measured on the same scene (see image above) with the same amount of objects, the same recursive depth, the same resolution (1920 x 1080). The measured times are averaged over multiple runs.

Reference system: AMD Ryzen 9 5900X (12 Cores / 24 Threads) | AMD Radeon RX 6800 XT

1 sample / pixel 100 samples / pixel
Elixir 67,200 ms N/A
JavaScript - Node.js 4,870 ms 308 s
Go 1,410 ms 142 s
OCaml 795 ms 75 s
Java 770 ms 59 s
C++ 685 ms 70 s
Rust 362 ms 36 s
C 329 ms 33 s
GPU - Compute Shader 21 ms 2 s
GPU - Vulkan Ray Tracing Extension 1 ms 0.1 s