rayray

A tiny GPU raytracer!

(more details on the project homepage)

Features

• Diffuse, metal, and glass materials
• The only three shapes that matter:
  • Spheres
  • Planes (both infinite and finite)
  • Cylinders (both infinite and capped)
• Any shape can be a light!
• Antialiasing with sub-pixel sampling
• Will crash your entire computer if you render too many rays per frame (thanks, GPU drivers)

Implementation

• Built on the bones of Futureproof
• Written in Zig
• Using WebGPU for graphics via wgpu-native
• Shaders compiled from GLSL to SPIR-V with shaderc
• Minimal GUI using Dear ImGUI, with a custom Zig + WebGPU backend
• Vaguely based on Ray Tracing in One Weekend, with a data-driven design to run on the GPU.

Project status

This is a personal / toy project, and I don't plan to support it on anything other than my laptop (macOS 10.13, zig-macos-x86_64-0.8.0-dev.1125, and wgpu-native built from source).

I'm unlikely to fix any issues, although I will optimistically merge small-to-medium PRs that fix bugs or add support for more platforms.

That being said, I'm generally friendly, so feel free to open issues and ask questions; just don't set your expectations too high!

If you'd like to add major features, please fork the project; I'd be happy to link to any forks which achieve critical momemtum!

License

Licensed under either of

• Apache License, Version 2.0
• MIT license

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.