vx::noise

vx::noise is a basic implementation of Simplex noise, FBM Fractal Simplex noise, and Cellular noise with SIMD support. The library's main goal was to be an easier to modify replacement to 'FastNoiseSIMD' since 'FastNoiseSIMD' uses macros excessively. The library is quite verbose and can easily be used to learn SIMD intrinsics.

Implemented Noise

• Simplex noise using the partial jenkins hashing function from https://arxiv.org/pdf/1903.12270.pdf
• FBM Simplex noise
• Cellular noise

If you would like any other noise function to be added feel free to ask.

Supported SIMD Levels

• AVX2
• SSE42 (can be changed to SSE41)
• SSE2
• NEON (planned)

Supported Platforms

• Linux (tested on Ubuntu 19.10)
• Windows (tested on Windows 10)

Mac OS should also be supported but has not been tested. Support for Android and iOS will require NEON support which currently isn't supported.

Getting Started

Creating a noise object is the same for all noise types. For Simplex Fractal just call vx::noise::SimplexFractal::create

vx::noise::Simplex* simplex = vx::noise::Simplex::create(12, 1);
vx::aligned_array_3d<float> noiseValues = simplex->noise(0, 0, 0, 16, 16, 16, 1);

Access noise values the same way you would with a normal 3D array

float indexNoiseValue = noiseValues[0][12][3];