WebGL Shader Manager v3 - Alle Uniforms

✎ Matrix Rain

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 float u_deltaTime;

float random(vec2 st) {
    return fract(sin(dot(st.xy, vec2(12.9898, 78.233))) * 43758.5453123);
}

void main() {
    vec2 uv = gl_FragCoord.xy / u_resolution.xy;
    float t = u_time;
    float columns = 40.0;
    vec2 grid = vec2(floor(uv.x * columns), floor(uv.y * 30.0));
    float speed = random(vec2(grid.x, 0.0)) * 0.5 + 0.2;
    float yOffset = fract(grid.y / 30.0 + t * speed);
    float charBright = random(grid) * 0.8 + 0.2;
    float trail = smoothstep(0.0, 0.3, yOffset) * smoothstep(1.0, 0.7, yOffset);
    float head = smoothstep(0.9, 1.0, yOffset);
    vec3 col = vec3(0.0, charBright * trail * 0.8, 0.0);
    col += vec3(0.8, 1.0, 0.8) * head;
    col *= step(random(vec2(grid.x, floor(t * speed * 30.0))), 0.7);
    float mouseDist = length(uv - u_mouseNorm);
    col += vec3(0.0, 0.3, 0.1) * smoothstep(0.2, 0.0, mouseDist);
    gl_FragColor = vec4(col, 1.0);
}

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