Variable advancedWaterVertexShaderConst
advancedWaterVertexShader: "\n uniform float uTime;\n varying vec2 vUv;\n varying vec3 vPosition;\n varying float vElevation;\n \n float hash(vec2 p) {\n return fract(sin(dot(p, vec2(127.1, 311.7))) * 43758.5453);\n }\n \n float noise(vec2 p) {\n vec2 i = floor(p);\n vec2 f = fract(p);\n f = f * f * (3.0 - 2.0 * f);\n \n float a = hash(i);\n float b = hash(i + vec2(1.0, 0.0));\n float c = hash(i + vec2(0.0, 1.0));\n float d = hash(i + vec2(1.0, 1.0));\n \n return mix(mix(a, b, f.x), mix(c, d, f.x), f.y);\n }\n \n float fbm(vec2 p) {\n float value = 0.0;\n float amplitude = 0.5;\n float frequency = 1.0;\n \n for (int i = 0; i < 4; i++) {\n value += amplitude * noise(p * frequency);\n amplitude *= 0.5;\n frequency *= 2.0;\n }\n \n return value;\n }\n \n void main() {\n vUv = uv;\n vPosition = position;\n \n vec3 pos = position;\n \n float wave1 = sin(pos.x * 0.4 + uTime * 0.8) * 0.15;\n float wave2 = sin(pos.y * 0.3 + uTime * 1.2) * 0.12;\n float wave3 = sin((pos.x + pos.y) * 0.2 + uTime * 0.6) * 0.1;\n \n float noiseValue = fbm(vec2(pos.x * 0.1, pos.y * 0.1) + uTime * 0.05);\n \n pos.z += wave1 + wave2 + wave3 + noiseValue * 0.1;\n \n vElevation = pos.z;\n gl_Position = projectionMatrix * modelViewMatrix * vec4(pos, 1.0);\n }\n" = ...
Advanced water shader with caustics
Lifted from Otterfall prototype.