Simple stupid noise primitives for WGSL and Rust (glam/bevy types)

Related tags

Game development procedural-generation noise simplex-noise fbm bevy
Overview

noisy_bevy

crates.io MIT docs.rs

Simple stupid noise primitives for glam types (Vec2, Vec3) and wgsl.

Main motivations are:

  • ergonomic usage with Bevy
  • same results on rust and wgsl (not bit-level perfect, though)

screenshot of an asteroid generated on the gpu and cpu

Implemented noise primitives:

  • [simplex_noise_2d]
  • [simplex_noise_2d_seeded]
  • [simplex_noise_3d]
  • [fbm_simplex_2d]
  • [fbm_simplex_2d_seeded]
  • [fbm_simplex_3d]

Usage

From rust

Zero initialization, just call the noise functions:

use bevy::prelude::*;
use noisy_bevy::simplex_noise_2d;

let p = Vec2::new(12.3, 45.6);
let value = simplex_noise_2d(p);

From wgsl shaders

First add the plugin to the Bevy app:

App::new()
    .add_plugin(NoisyShaderPlugin)

And import it and use it in your shaders, with the same API as on the CPU-side:

#import noisy_bevy::prelude

// ...

let p = vec2(12.3, 45.6);
let value = simplex_noise_2d(p);

See the asteroids example, for an example that uses noise to procedurally generate a tilemap on the CPU and a matching background in a wgsl shader.

Bevy Version Support

The main branch targets the latest bevy release.

bevy noisy_bevy
0.9 0.2, main
0.8 0.1

License

MIT

The original simplex noise source is MIT-only, however all changes made by me or PRs to this repo are also available under Apache-2.0.

Acknowledgments

The noise primitives are ports/copies of these

Contributions

PRs welcome!

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Comments
  • Additional noise primitives

    Additional noise primitives

    Maybe add:

    • ridged multifractal
    • hybrid multifractal
    • worley
    • turbulence
    • voronoise

    Perhaps not all of them... I want to keep the scope and complexity of the crate down...

    enhancement 
    opened by johanhelsing 0
Releases(v0.2.0)
Owner
Johan Klokkhammer Helsing
Making names and taking games
Johan Klokkhammer Helsing
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