WebGL Shader Manager v3 - Alle Uniforms

✎ Tunnel Vision

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_zoom;

void main() {
    vec2 uv = (gl_FragCoord.xy - 0.5 * u_resolution.xy) / u_resolution.y;
    float t = u_time * 0.3;
    float a = atan(uv.y, uv.x);
    float r = length(uv);
    float tunnel = 1.0 / r;
    vec2 p = vec2(a * 3.0 / 6.2831 + t * 0.2, tunnel * 0.5 - t);
    float grid = step(0.9, fract(p.x * 8.0)) + step(0.9, fract(p.y * 4.0));
    vec3 col = vec3(0.0, 0.1, 0.2) * tunnel * 0.1;
    col += vec3(0.0, 0.6, 0.9) * grid * tunnel * 0.15;
    col += vec3(0.8, 0.2, 0.5) * grid * tunnel * 0.1 * sin(t * 2.0 + a * 3.0);
    float centerGlow = exp(-r * 5.0);
    col += vec3(0.5, 0.8, 1.0) * centerGlow;
    vec2 mouseOffset = (u_mouseNorm - 0.5) * 0.3;
    float mouseDist = length(uv - mouseOffset);
    col += vec3(1.0, 0.5, 0.0) * smoothstep(0.3, 0.0, mouseDist) * 0.3;
    col *= u_zoom;
    gl_FragColor = vec4(col, 1.0);
}

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