18 lines
427 B
GLSL
18 lines
427 B
GLSL
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#ifdef GL_ES
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precision mediump float;
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#endif
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uniform float time;
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uniform vec2 resolution;
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void main()
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{
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vec2 r = resolution,
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o = gl_FragCoord.xy - r/2.;
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o = vec2(length(o) / r.y - .35, atan(o.y,o.x));
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vec4 s = .1*cos(1.6*vec4(0,1,2,3) + time + o.y + asin(sin(o.x)) * sin(time)*10.);
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vec4 e = s.yzwx;
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vec4 f = min(o.x-s,e-o.x);
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gl_FragColor = dot(clamp(f*r.y,0.,1.), 80.*(s-e)) * (s-.1) - f;
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}
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