Cleanse vec2 p=(FC.xy*2.-r)/r.y/.3;for(float f;f++<1e2;p+=.02*sin(p.yx+.5*t))o+=(cos(f/27.+vec4(0,1,3,0))+1.1)/length(sin(p*sin(r+f)/.7));o=tanh(o*o/4e4);

"Split" vec2 p=(2.*FC.xy-r)/r.y,c=4.*p/(3.-p.y)+t;p=5.*p/(2.+fract(dot(cos(round(c)+r),sin(ceil(c+cos(c/.1)))))-p.y)+t;o=tanh(.2/abs(sin(p.x+p.y+vec4(1,.7,.6,0)*sin(p.y))));o*=o;

"Caustics" in 146 chars of #GLSL vec2 p=FC.xy/r.y*2e1+t;for(float i;i++<8.;)p+=sin(p+t/.2+i)*.4,p*=mat2(6,-8,8,6)/9.;o=vec4(tanh(length(fwidth(sin(p*.3)/.1))),texture(b,FC.xy/r));

"Painted" vec2 p=(2.*FC.xy-r)/r.y;p=p/.1/(3.-p.y)+t;o+=sin(sin(dot(ceil(p+sin(p*3.).yx),vec2(17,79)))*7e3+vec4(0,1,2,0))+.5;

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

Stormy Torus [480] float i,d,w,s,n,m=1.;for(mat2 R=mat2(cos(sin(t/2.)*.785+vec4(0,33,11,0)));i++<1e2;){vec3 k,p=vec3((FC.xy*2.-r.xy)/r.y*d,d-10.);p.xz*=R;if(p.y<-6.3){p.y =-p.y-9.;m=.5;}k=p;for(p*=.5,n=.01;n<.2;n+=n)p.yz+=cos(p.xy*.01)-abs(dot(sin(.02*p.z+.03*p.y+2.*t+.3*p/n),p-p+n));s=length(k.xy)-4.;d+=w=.01+.07*abs(max(w=mix(sin(length(ceil(k*4.).z+k)),sin(length(p)-1.),smoothstep(5.,5.5,p.y)),sqrt(s*s+k*k).z-1.5)-i/150.);o+=max(sin(vec4(1,2,3,1)+i*.5)*1.3/w,-length(k*k));}o=tanh(o*o/1e6)*m; #glsl

"Ghosts" for(float i,z,d;i++&lt;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&lt;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);

#つぶやきGLSL float i,e,R,s;vec3 q,p,d=vec3((FC.xy*2.-r)/r.y*1.5+vec2(0,1),1);for(q.zy--;i++&lt;77.;){o+=.011-exp(-e*2e3)*.016;s=1.;p=q+=d*e*R*.2;p=vec3(log2(R=length(p))-t*.4,exp(-p.z/R),atan(p.x,p.y)+t*.2);for(e=--p.y;s&lt;1e3;s+=s)e+=abs(dot(sin(p.xxz*s),cos(p*s)))/s*.17;}o=tanh(o);

"Fusion" in 230 chars of #GLSL: vec3 p,v;for(float i,z,d;i++&lt;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);

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

"Waveform" for(float i,d,z,f;i++&lt;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&lt;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);

"Storm" in 238 bytes: for(float i,z,d,s;i++&lt;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++&lt;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);

"Dust" vec3 p;for(float i,z,d;i++&lt;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);

"Heavenly 2" for(float i,z,d;i++&lt;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&lt;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);

"Angel" #GLSL for(float i,z,d,j;i++&lt;5e1;o+=(sin(z+vec4(2,3,4,0))+1.1)/d){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z+=6.;p.xz*=mat2(cos(p.y*.5+vec4(0,33,11,0)));for(j=1.;j&lt;9.;j/=.8)p+=cos((p.yzx-t*vec3(3,1,0))*j)/j;z+=d=.01+abs(length(p.xz)-.5)/9.;}o=tanh(o/1e3);

"Ether" for(float i,z,d;i++&lt;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&lt;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);

for(float i,z,d,s;i++&lt;1e2;){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.yz*=rotate2D(.2);for(d=5.;d&lt;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);

Making animated, looped backgrounds for my church again for(float... i,z,d;i++&lt;1e2;){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z-=t*PI/10.;for(d=1.;d&lt;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

float i,e,g,R,s;vec3 q,p,d=vec3((FC.xy*2.-r)/r+vec2(0,1),1);for(q.zy--;i++&lt;99.;){e+=i/9e9;o.rgb+=hsv(e,sin(g),min(e*i,.02));s=3.;p=q+=d*e*R*.35+1e-5;g+=p.y/s;p=vec3(log2(R=length(p))+t*.2,exp(mod(-p.z,s)/R-.4),p);for(e=--p.y;s&lt;6e3;s+=s)e+=-abs(dot(sin(p.xz*s),cos(p.zy*s))/s*.4);}

#つぶやきGLSL float i,e,R,s;vec3 q,p,d=vec3(FC.xy/r-vec2(.5,-.3),.8);for(q.zy--;i++&lt;99.;){o.rgb+=hsv(.1,.15,min(e*s,.7-e)/35.);s=1.;p=q+=d*e*R*.2;p=vec3(log(R=length(p))-t*.8,exp(.8-p.z/R),atan(p.y,p.x)+t*.4);for(e=--p.y;s&lt;3e2;s+=s)e+=dot(sin(p.yzz*s)-.5,.8-sin(p.zxx*s))/s*.3;}