SIMDNoise
Super fast SIMD noise library for Rust. PRs welcome! This library was created by Jack Mott. The current maintainer is Peter Reijnders.
Features
- Gradient Noise (Simplex aka Perlin) 1D,2D,3D,4D
- Fractal Brownian Motion, Ridge, and Turbulence
- Cellular Noise (aka Voroni) 2D, 3D
- SSE2, SSE41, and AVX2 instruction sets, along with non SIMD fallback
- AVX2 version also leverages FMA3
- Runtime detection picks the best available instruction set
- Provide a seed value to randomize your noise result
Benchmarks
Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz Single Threaded using Criterion.rs
2D 4k (3840βΓβ2160) Fbm Noise, 3 Octaves
| SIMD Set | Time |
|---|---|
| scalar | 888 ms |
| sse2 | 225 ms |
| sse41 | 186 ms |
| avx2 | 108 ms |
3D 128βΓβ128 x 128 Cell Noise
| SIMD Set | Time |
|---|---|
| scalar | 1,400 ms |
| sse2 | 128 ms |
| sse41 | 94 ms |
| avx2 | 47 ms |
Todo
- AVX512 support
- ARM NEON support
- Other noise types
Get a block of noise with runtime SIMD detection
The library will, at runtime, pick the fastest available options between SSE2, SSE41, and AVX2.
// Get a block of 2d fbm noise with default settings, 100 x 100, with values scaled to the range [0,1]
let noise = NoiseBuilder::fbm_2d(100, 100).generate_scaled(0.0, 1.0);
// Get a block of 3d ridge noise, custom settings, 32x32x32 unscaled
let (noise, min, max) = NoiseBuilder::ridge_3d(32, 32, 32)
.with_freq_3d(0.05, 0.04, 0.01)
.with_octaves(5)
.with_gain(2.0)
.with_seed(1337)
.with_lacunarity(0.5)
.generate();Call noise functions directly
Sometimes you need something other than a block, like the points on the surface of a sphere. Sometimes you may want to use SSE41 even with AVX2 is available.
let noise_setting = NoiseBuilder::ridge_3d(32, 32, 32)
.with_freq_3d(0.05, 0.04, 0.01)
.with_octaves(5)
.with_gain(2.0)
.with_lacunarity(0.5)
.wrap();
// get a block of noise with the sse41 version, using the above settings
let (noise, min, max) = unsafe { simdnoise::intrinsics::sse41::get_2d_noise(&noise_setting) };
// send your own SIMD x,y values to the noise functions directly
unsafe {
// sse2 simplex noise
let x = _mm_set1_ps(5.0);
let y = _mm_set1_ps(10.0);
let f: __m128 = simdnoise::intrinsics::sse2::simplex_2d(x, y);
// avx2 turbulence
let x = _mm256_set1_ps(5.0);
let y = _mm256_set1_ps(10.0);
let freq = _mm256_set1_ps(1.0);
let lacunarity = _mm256_set1_ps(0.5);
let gain = _mm256_set1_ps(2.0);
let octaves = 3;
let seed = 1337;
let f_turbulence: __m256 = simdnoise::intrinsics::avx2::turbulence_2d(x, y, lacunarity, gain, octaves, seed);
};