ア on Twitter: "#つぶやきGLSL #define q s=abs(s)-1. void main(){vec3 s,l,m;mat2 a=mat2(vec4(cos(t),-sin(t),sin(t),cos(t))); for(int i=0;i<32;i++){s.yz*=a;q,q;s.xz*=a;l+=max(length(s)-1.,-length(s.xy)+.5);s=vec3(0.,0.,8.)+vec3((gl_FragCoord.xy-r/2.)/3e2,-1.)*l;}gl_FragColor=vec4(s/l/l*8.,1.);}… https://t.co/RMxFZL81gP"

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#つぶやきGLSL #define q s=abs(s)-1. void main(){vec3 s,l,m;mat2 a=mat2(vec4(cos(t),-sin(t),sin(t),cos(t))); for(int i=0;i<32;i++){s.yz*=a;q,q;s.xz*=a;l+=max(length(s)-1.,-length(s.xy)+.5);s=vec3(0.,0.,8.)+vec3((gl_FragCoord.xy-r/2.)/3e2,-1.)*l;}gl_FragColor=vec4(s/l/l*8.,1.);}pic.twitter.com/3PCBHCW9h1