#つぶやきGLSL
#define f(p)length(max(abs(mod(p,1.)-.5)-.1 ,.0))
void main(){vec3 a=vec3((gl_FragCoord.xy-r/2.)/1e3,1.);vec3 r=vec3(1.);float d,l=0.;for(int i=0;i<64;i++){d=f(r);l+=d;r=a*l;}gl_FragColor=vec4(vec3(cos(r)*2.)*f(sin(r+t)),1.);}pic.twitter.com/fN7JP8xRhD
11:22 AM - 18 Apr 2020
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