WebGL Shader Manager v3 - Alle Uniforms

✎ Starfield Warp

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;

float hash(float n) { return fract(sin(n) * 43758.5453123); }
float noise(vec2 x) {
    vec2 p = floor(x);
    vec2 f = fract(x);
    f = f * f * (3.0 - 2.0 * f);
    float n = p.x + p.y * 57.0;
    return mix(mix(hash(n), hash(n + 1.0), f.x),
               mix(hash(n + 57.0), hash(n + 58.0), f.x), f.y);
}

void main() {
    vec2 uv = (gl_FragCoord.xy - 0.5 * u_resolution.xy) / u_resolution.y;
    float t = u_time * 0.5 * u_zoom;
    vec3 col = vec3(0.0);
    float mouseInfluence = length(uv - (u_mouseNorm - 0.5) * vec2(u_resolution.x/u_resolution.y, 1.0));
    for (float i = 0.0; i < 3.0; i++) {
        float fi = i + 1.0;
        vec2 p = uv * fi * 3.0;
        float a = atan(p.y, p.x);
        float r = length(p);
        float warp = t * fi * 0.5;
        float stars = noise(vec2(a * 10.0 + warp, r * 2.0 - warp * 2.0));
        stars = pow(stars, 8.0) * smoothstep(5.0, 0.0, r);
        vec3 starCol = vec3(0.8, 0.9, 1.0) * stars;
        if (i == 1.0) starCol = vec3(1.0, 0.8, 0.6) * stars;
        if (i == 2.0) starCol = vec3(0.6, 0.8, 1.0) * stars;
        col += starCol / fi;
    }
    col += vec3(0.05, 0.02, 0.1) / (length(uv) + 0.3);
    col += smoothstep(0.3, 0.0, mouseInfluence) * vec3(0.2, 0.4, 1.0) * 0.3;
    gl_FragColor = vec4(col, 1.0);
}

⬇ Export JSON ← Zurück

Live-Vorschau

FPS: --