Name: Xor
Joined: June 17, 2014

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void mainImage(out vec4 O,vec2 I){O*=0.;vec2 r=iResolution.xy,p=(I-r*.6)*mat2(1,-1,2,2);for(float i=0.,a;i++<3e1;O+=.2/(abs(length(I=p/(r+r-p).y)*8e1-i)+4e1/r.y)*clamp(cos(a=atan(I.y,I.x)*ceil(i*.1)+i*i),.0,.6)*(cos(a-i+vec4(6,1,2,0))+1.));}
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