precision highp float; uniform vec2 resolution; uniform float time; uniform vec2 mouse; uniform sampler2D backbuffer; vec3 hsvToRgb(float h, float s, float v) { // h: 0.0 - 360.0, s: 0.0 - 1.0, v: 0.0 - 1.0 float c = s; // float c = v * s; float h2 = fract(h) * 6.0; float x = c * (1.0 - abs(mod(h2, 2.0) - 1.0)); vec3 rgb = (v - c) * vec3(1.0, 1.0, 1.0); if (0.0 <= h2 && h2 < 1.0) { rgb += vec3(c, x, 0.0); } else if (1.0 <= h2 && h2 < 2.0) { rgb += vec3(x, c, 0.0); } else if (2.0 <= h2 && h2 < 3.0) { rgb += vec3(0.0, c, x); } else if (3.0 <= h2 && h2 < 4.0) { rgb += vec3(0.0, x, c); } else if (4.0 <= h2 && h2 < 5.0) { rgb += vec3(x, 0.0, c); } else if (5.0 <= h2 && h2 < 6.0) { rgb += vec3(c, 0.0, x); } return rgb; } float rand(vec2 co){ return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453); } vec3 color(vec3 p) { return vec3(1.0 * sin(p.x) + fract(p.z), 0.7 * sin(p.y) + 0.3, sin(p.y)); } float noise(vec3 p, float t) { float r = rand(vec2(float(floor(t)), 2.0)) * 1.8 + 0.0; return sin(p.x + p.y * (r) + p.z); } void main(void) { vec2 uv = (gl_FragCoord.xy * 2.0 - resolution.xy) / min(resolution.x, resolution.y) * 2.0; float rx = rand(vec2(float(floor(time)), 1.5)) - 0.5; float ry = rand(vec2(float(floor(time)), 2.0)) - 0.5; float rt = rand(vec2(float(floor(time)), 3.0)) + 0.1; float a = atan(uv.x, uv.y); float r = length(uv); vec3 p = vec3(uv.y + time * ry, r, uv.x + time * rx); for (int i = 1; i < 20; i++) { vec3 newp = p; newp.x += fract(noise(p.xyz, time) * 0.5 + time * rt * 0.1); newp.y += fract(noise(p.yzx, time) * 0.5 + time * rt * 0.1); newp.z += noise(p.zxy, time); p = mix(p, newp, 1.0); } vec3 c = color(p); gl_FragColor = vec4(hsvToRgb(c.x, c.y, c.z), 1.0); }

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