Dual Core

GLSL shader by f18199 · created 2026-03-03 · 10s loop · 1 pass

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Shader source (GLSL)

Common

#define pi acos(-1.)
#define deg pi/180.
#define time iTime*2.*pi/10.
#define R iResolution.xy
#define ar R.x/R.y
#define M iMouse
#define xm (M.xy/R)
#define nm ((xm.xy-0.5)*vec2(ar,1.)+0.5)
mat2 r2d(float a) {
    return mat2(cos(a),sin(a),-sin(a),cos(a));
}

Buffer A (iChannel0)

void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    vec2 uv = (fragCoord - 0.5 * iResolution.xy) / iResolution.y;
    
    // Two wave sources
    float d1 = length(uv - vec2(-0.3, 0.0));
    float d2 = length(uv - vec2(0.3, 0.0));
    
    bool is_source1 = d1 < d2;
    float wave, glow;
    vec3 col;
    
    if(is_source1) {
        wave = sin(d1 * 12.0 - iTime * 2.0);
        col = 0.5 + 0.5 * cos(vec3(0.0, 2.0, 4.0) + wave);
        glow = exp(-d1 * 2.5);
    } else {
        wave = sin(d2 * 12.0 + iTime * 2.0);
        col = 0.5 + 0.5 * cos(vec3(3.0, 4.0, 5.0) + wave);
        glow = exp(-d2 * 2.5);
    }
    
    col *= glow * 1.5;
    
    // Vignette
    float vig = 1.0 - length(uv) * 0.4;
    col *= vig;
    
    fragColor = vec4(col, 1.0);
}

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