"Storm" in 238 bytes: for(float i,z,d,s;i++<1e2;o+=vec4(.2/d,9,2,1)/d){vec3 p=z*normalize(FC.rgb*2.-r.xyy),a=p;p.z+=7.;s=length(p); for(d=0.;d++<9.;a+=sin(a*d-t).yzx/d); z+=d=length(vec4(sin(s+s-t/.1+a*sin(a.yzx/3.+t))+.9,min(s-=4.,-s/.1)*.4))*.1;} o=tanh(o/8e3);

"Siri" vec3 p,a;for(float i,z,d,s;z+i++<2e2;o+=max(cos(p.x*.4+vec4(0,2,4,0)),5./s/s)/d/d)p=z*normalize(FC.rgb*2.-r.xyy),p.z+=9.,s=length(p=dot(a=normalize(cos(vec3(0,2,4)-t*.5+s*.3)),p)*a-cross(a,p)),z+=d=min(abs(dot(p,sin(p).yzx))*.2+max(d=s-5.,.1),abs(--d)+.2)*.2;o=tanh(o/3e4);

for(float i,z,d,s;i++<1e2;){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.yz*=rotate2D(.2);for(d=5.;d<2e2;d+=d)p+=.5*sin(p.yzx*d-t*PI/10.)/d;z+=d=.5*(.01+.5*max(s=.3-abs(p.y),-s*.1));o+=(cos(s/.07+p.x+t*PI/10.-vec4(0,1,2,3)-3.)+1.5)*exp(s*9.)/d;}o=tanh(o*o/4e8);

"Ghosts" for(float i,z,d;i++<1e2;o+=vec4(z/7.,2,3,1)/d){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z-=5.*t;p.xy*=mat2(cos(z*.1+t*.1+vec4(0,33,11,0)));for(d=1.;d<9.;d/=.7)p+=cos(p.yzx*d+t)/d;z+=d=.02+abs(2.-dot(cos(p),sin(p.yzx*.6)))/8.;}o=tanh(o*o/1e7);

"Heavenly 2" for(float i,z,d;i++<1e2;o+=(cos(z+t+vec4(0,1,2,3))+1.1)/d){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z-=t;for(d=1.;d<9.;d/=.7)p+=cos(p.yzx*d+z*.2-t*.1)/d;z+=d=.02+.1*abs(p.y+1.);}o=tanh(o/2e3);

"Fusion" in 230 chars of #GLSL: vec3 p,v;for(float i,z,d;i++<1e2;o+=(sin((p.z-t*.2)*vec4(3,5,9,4))+1.)/d)p=z*normalize(FC.rgb*2.-r.xyy),p+=.15,v=vec3(atan(p.x,p.y)-t*.1,length(p.xy),p.z/.2-t),z+=d=length(max(v=sin(v*7.+cos(v/.03-t)),v.yzx*.1))/1e2;o=tanh(o/1e5);

"Sauron" for(float i,z,d;i++<6e1;o+=(sin(z*.5+vec4(6,1,2,0))+1.1)/d){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z+=6.;p.xy*=mat2(cos(p.z*.4+vec4(0,33,11,0)));for(d=2.;d<15.;d/=.6)p+=cos((p.yzx+t*3.)*d)/d;z+=d=.02+abs(min(length(p.xy)-3.,4.-length(p)))/8.;}o=tanh(o/15e2);

"HOME" vec3 p; for(float i,z,d,l;i++<6e1;o+=(vec4(5,9,2.+d*5e1,0)/l)/z) p=z*normalize(FC.rgb*2.-r.xyy)-cos(.5*t), p.z+=5.,p.xz*=mat2(cos(t+p.y*.4-vec4(0,33,11,0))), d=length(p),z+=d=min(l=length(cos(p/d/.1)+p.y+d),d-.8-exp(-p*p/.1).y)/9.; o=tanh(o*o/7e3);

for(float i,z,d,f;i++<1e2;o+=vec4(4,6,8.+z,0)/f-min(dFdx(z)*r.y+z,0.)/exp(d*d/.1)){vec3 p=z*(FC.rgb*2.-r.xyy)/r.y,c=p;p.z+=8.;c.z*=3.;for(f=1.;f++<9.;c+=sin(c.yzx*f+z+t*.5)/f);z+=min(f=.1+abs(.2*c.y+abs(p.y+.8)),d=max(length(p)-3.,.9-length(p-vec3(-1,1,3))))/7.;}o=tanh(o/2e3);

for(float i,d,s,T=t/2.;++i<1e2;){vec3 p=vec3((FC.xy*2.-r.xy)/r.y*d*rotate2D(T),d-4.);p.xz*=rotate2D(T);d+=s=.012+.07*abs(max(sin(length(p*p)/.4),clamp(length(p*p)-4.,.0,2.))-i/1e2);o+=max(1.3*sin(vec4(3,2,1,1)+i*.3)/s,-length(p*p*p));}o=tanh(o*o/2e6); #つぶやきGLSL

"Ether" for(float i,z,d;i++<8e1;o+=max(sin(z*.4+t+vec4(6,2,4,0))+.7,.2)/d){vec3 p=z*normalize(FC.rgb*2.-r.xxy);p.z-=5.*t;for(d=1.;d<15.;d/=.6)p+=.6*cos(p.yzx*d-vec3(t*.6,d,t))/d;z+=d=.01+abs(p.y*.3+dot(cos(p),sin(p.yzx*.6))+2.)/3.;}o=tanh(o/2e3);

Making animated, looped backgrounds for my church again for(float... i,z,d;i++<1e2;){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z-=t*PI/10.;for(d=1.;d<64.;d+=d)p+=.7*sin(p.yzx*d-t*d*PI/10.)/d;z+=d=(.03+.1*abs(abs(p.y)-2.))*.5;o+=(cos(z*.3+p.y/.5+vec4(0,1,2,3)-2.)+1.5)/d;}o=tanh(o/5e3);show more

"Dust" vec3 p;for(float i,z,d;i++<2e1;o+=(cos(p.y/(.1+.05*z)+vec4(6,5,4,0))+1.)*d/z/7.)p=z*normalize(FC.rgb*2.-r.xyy),p.x-=t,p.xy*=.4,z+=d=(dot(cos(p/.6),sin(p+sin(p*7.)/4.).zyx)*.4+p.y/.7+.7);o=tanh(o*o);

void mainImage(out vec4 o, vec2 f){float c=cos(iTime),s=sin(iTime),a=iResolution.y,z=-a,i,d;f=2.*f/a-1.;vec3 p;for(o*=i;i++<1e2;o+=(sin(p.x/.2+z/.1+vec4(0,1,2,3))+1.)/d)p=vec3(f.x*c-z*s,f.y,z*c+f*s),a=length(p.xy)-.6,z+=d=.01+.3*abs(sqrt(a*a+p*p).z-.3);o=tanh(o*o/7e6);}

float i,e,R,s,x,y,z;vec3 a,q,p,d=.5-FC.rgb/r.y;for(q.yz--,a=q;i++<1e2;i>76.?e+=1e-4,d=a:d){e*=R;p=q+=d*e*.5;o+=log(++e+cos(z/6.+vec4(0,1,2,0))*.3)/1e2;p=vec3(log(R=length(p))-t*.5,e=-p.z/R,atan(p.x,p.y));for(z=s=1.;s<1e2;s+=s)e+=exp(x=sin(y=PI*(dot(cos(p*s),p/p)))-1.4)/s,z+=x/y;}

"Facility" vec3 p,q;for(float z,d,i,l;l++<3e1;z+=d,o+=.1*pow(d*d*exp(p.yyyy),vec4(.7,.6,.5,1))){p=z*normalize(FC.rgb*2.-r.xyy);p.z-=t;for(q=++p,d=-9.,i=4.;i>.01;i*=.3)d=max(d,min(min(q=i*.7-abs(mod(q+i,i+i)-i),q.y).x,q.z))/(1.+z/3e1),q.zy*=rotate2D(2.);}o=tanh(o*o);

"Waveform" for(float i,d,z,f;i++<9e1;o+=(cos(z*.5+t+vec4(0,2,4,3))+1.3)/d/z){vec3 p=z*normalize(FC.rgb*2.-r.xyy)+1.;f=max(-p.y,0.);p.y+=f+f;for(d=1.;d<3e1;d+=d)p.y+=cos(p*d+2.*t*cos(d)+z).x/d;z+=d=(.1*f+abs(p.y-1.)/(++f*f)+max(d=p.z+3.,-d*.1))/8.;}o=tanh(o/9e2);

"Runner" vec3 q,p;for(float z,d,i,l;l++<3e1;z+=d,o+=.1*(vec4(4,2,1,0)-tanh(p.y+4.))*d/(1.+z)){p=z*normalize(FC.rgb*2.-r.xyy)-2.;p.xz-=t+3.;for(q=p,d=p.y,i=4e1;i>.01;i*=.2)d=max(d,min(min(q=i*.9-abs(mod(q,i+i)-i),q.y).x,q.z)),q.xz*=rotate2D(9.);}o=tanh(o*o);

Abracadabra 🪄 #define t (t+fract(1e4*sin(dot(FC.xy,vec2(137,-13))))/6e1) #define S smoothstep float... i,d,s,m,l,x=abs(mod(t/4.,2.)-1.),a=x 6.)break;l=length(.2*k.xy-vec2(sin(t)/9.,.6+sin(t+t)/9.));k.y<-5.?k.y=-k.y-10.,m=.5:m=1.;k.xz*=mat2(cos(a*6.28+k.y*.3*S(.2,.5,x)*S(.7,.5,x)+vec4(0,33,11,0)));for(p=k*.5,s=.01;s<1.;s+=s)p.y+=.95+abs(dot(sin(p.x+2.*t+p/s),.2+p-p))*s;l=mix(sin(length(k*k.x)),mix(sin(length(p)),l,.5-l),S(5.5,6.,p.y));p=abs(k);d+=s=.012+.09*abs(max(sin(length(k)+l),max(max(max(p.x,p.y),p.z),dot(p,vec3(.577))*mix(.5,.9,a))-3.)-i/1e2);}o=tanh(o*o/1e6)*m;show more

float e,i,s,x=.5;vec3 p,q,d=x-FC.rgb/r.y;for(q.z--;i++&lt;1e2;o+=.01/exp(e*1e3)){x&lt;.01?d=q*3.:q;p=q+=d*e;p.zy*=rotate2D(t*PI/6.);p.z=fract(p.z+t)-.5;p.y;s=2.;p=.5-abs(p);for(int i;i++&lt;9;p.z+=3.)p=abs(p)-.7,s*=e=6./min(dot(p,p),2.),p=abs(p)*e-4.;e=min(x=length(q)-.3,length(p.xz)/s);}

#つぶやきGLSL float i,e,R,s;vec3 q,p,d=vec3(FC.xy/r-vec2(.4),.4);for(q.xz--;i++&lt;79.;){o.rgb+=hsv(e,-d.y,min(s*e,.4-e)/20.);s=1.;p=q+=d*e*R*.6;p=vec3(log(R=length(p)),exp(.7-p.z/R),atan(p.x,p.y)+sin(t*.5)*.2);for(e=--p.y;s&lt;4e2;s+=s)e+=dot(sin(p.zxy*s+sin(t)*.6)-1.,cos(p*s))/s*.2;}