MetalliSwell 3D: Liquid Metal Ocean & Realistic Wave ASMR Sanctuary

01. Six-Octave 3D GPU Gerstner Wave Kinematics

Every vertex on the 1,200m × 1,200m ocean mesh (144,400 triangles) is displaced 100% on the GPU inside a custom GLSL vertex shader with zero CPU geometry loops. Six directional octaves of 3D trochoidal Gerstner waves displace surface coordinates both horizontally and vertically according to the deep-water dispersion relation ω² = g · k, pulling water particles toward wave peaks to create sharp, realistic crests and broad, rolling troughs.

Simultaneously, the shader computes analytical partial derivatives to form exact tangent and binormal vectors alongside the Jacobian determinant J = 1 − ∑ Qi ki Ai cos(θi). Where J drops below the stability threshold, wave crests compress and trigger multi-scale Voronoi cellular foam.

02. Metallic PBR Optics, Fresnel & Subsurface Scattering

Surface normals are refined per-pixel in the fragment shader using finite-difference Simplex Fractional Brownian Motion (FBM) ripples and interactive radial wave rings cast by pointer movement. Specular reflections combine a real-time procedural atmospheric environment map (THREE.Sky + THREE.PMREMGenerator), dual-lobe GGX microfacet solar glints, Schlick Fresnel equation, and translucent Subsurface Scattering (SSS) when thin wave crests are backlit by the sun.

03. Procedural Web Audio Ocean Synthesizer

The native Web Audio API OceanAudioEngine generates dual-channel Pink (1/f) and Brown (1/f²) noise buffers in memory without external .mp3 files. Lowpass and bandpass BiquadFilterNode stages are continuously modulated by the live wave height and wind speed uniforms to synthesize deep surging swells, breaking crest hiss, harmonic metallic sub-bass resonance, and camera-linked stereo wind panning.