WebGL Shader Manager v3 - Alle Uniforms

✎ Voronoi Cells

Bereit

Vertex Shader

attribute vec2 a_position;
void main() {
    gl_Position = vec4(a_position, 0.0, 1.0);
}

Fragment Shader

precision mediump float;
uniform float u_time;
uniform vec2 u_resolution;
uniform vec2 u_mouseNorm;
uniform vec4 u_mouseClick;

vec2 hash2(vec2 p) {
    return fract(sin(vec2(dot(p, vec2(127.1, 311.7)), dot(p, vec2(269.5, 183.3)))) * 43758.5453);
}

void main() {
    vec2 uv = gl_FragCoord.xy / u_resolution.xy;
    float t = u_time * 0.2;
    vec2 mouse = u_mouseNorm;
    vec3 col = vec3(0.05);
    float m_dist = 1.0;
    vec2 m_point = vec2(0.0);
    for (float j = 0.0; j < 3.0; j++) {
        for (float i = 0.0; i < 3.0; i++) {
            vec2 g = vec2(i, j);
            vec2 o = hash2(g + floor(uv * 6.0) + j * 50.0);
            o = 0.5 + 0.4 * sin(t + 6.2831 * o);
            vec2 r = g + o - fract(uv * 6.0);
            float d = dot(r, r);
            if (d < m_dist) {
                m_dist = d;
                m_point = o;
            }
        }
    }
    col = vec3(0.5 + 0.5*cos(6.2831*m_point.x + vec3(0.0, 1.0, 2.0)));
    col *= 1.0 - 0.5 * m_dist;
    float mouseDist = length(uv - mouse);
    col += vec3(1.0, 0.3, 0.1) * smoothstep(0.15, 0.0, mouseDist) * u_mouseClick.z;
    gl_FragColor = vec4(col, 1.0);
}

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