Free Unity 2023.2 Project: FFT Ocean and Sum of Sines Water Rendering (Acerola)

Overview

Acerola (Garrett Gunnell) shares the code associated with his videos on water rendering. It covers a sum of sines simulation with sine, exponential sine and Gerstner waves, an FBM wave simulation, analytical normals for both, and a basic atmosphere shader with distance fog and a sun.

The most advanced part is a Fast Fourier Transform ocean simulation using a dual JONSWAP spectrum, shaded by a physically based water shader with a microfacet BRDF and approximate subsurface scattering. The README notes the shaders are a reference rather than a production ready asset, and the project (Unity 2023.2.2f1) is free under the MIT license.