_An implicit surface defined compositionally, raymarched, and shaded entirely

in Rust_

Announcing [rust-gpu-sdf], by [@Shfty]; a `no-std` signed distance field library

designed for use on both CPU and GPU.

[Signed distance fields][sdf-wiki] are a powerful computational tool

that allow a surface to be represented by a function from position to distance.

This has [intuitive applications][raymarchingdf] in various domains such as rendering,

collision, meshing, and volume modeling, providing the means to represent analytically

smooth geometry, dynamic morphing (as pictured), and various other effects

that would traditionally require specialized tools to model.

[rust-gpu-sdf] aims to enumerate this domain to the fullest extent allowed

by Rust's type system, lifting its traditionally monolithic implementation style

into a set of intuitive composable operators, and leveraging a natural synergy

with functional programming to provide powerful compositional tools.

Contrary to its working title, [rust-gpu-sdf] is actually [rust-gpu]-agnostic,

so can be used anywhere Rust can;

it's presently named as such due to being built as the primary consumer of [bevy-rust-gpu],

with a view to providing a performant and compositional way to compile SDFs

into SPIR-V for rendering on the GPU.

It's presently in a heavy-development prerelease state, so watch this space!

[rust-gpu-sdf]: https://github.com/bevy-rust-gpu/rust-gpu-sdf

[bevy-rust-gpu]: https://github.com/bevy-rust-gpu

[sdf-wiki]: https://en.wikipedia.org/wiki/Signed_distance_function

[raymarchingdf]: https://iquilezles.org/articles/raymarchingdf