シェーダー関連

SUGIMOTO Yoshiaki @catzpaw

GLSLでグラディウス２空中戦のテーマ。 グラディウスシリーズの空中戦の曲ではこれが一番好き。これがMSX1で鳴ってたんだから衝撃よ。 shadertoy.com/view/mlGBDR pic.twitter.com/gtS2ytyVQe

SUGIMOTO Yoshiaki @catzpaw

#つぶやきGLSL float l,i,v,e;vec2 p=(FC.xy*2.-r)/r.y,w;p=vec2(atan(p.x,p.y),log(length(p)));e=p.y*.2+2.5;l=p.y-=t;for(;++i<6.;p+=w,w=abs(sin(p)),p=w-abs(sin(p.yx*(sin(ceil(l*.2))+3.))),p+=v-l,v+=w.y);o=hsv(ceil(p.x)*.27,.3,ceil(v)-e).rgbb; twigl.app/?ol=true&ss=-N… pic.twitter.com/U9T9JhbU8W

SUGIMOTO Yoshiaki @catzpaw

#つぶやきGLSL float l,i,v,e;vec3 p,d=vec3((FC.xy*2.-r)/r.y,1.);o+=1.;d*=rotate3D(t*.1,FC.zww);for(p.z+=t*3.;++i<1e2;p+=d*e*.2){v=fsnoise(ceil(p.yz*.4+.5));l=dot(cos(p),sin(p.zxy));e=l+1.3;e<.05?o.rgb*=hsv(v,.4,.98),e=3.:e;} twigl.app/?ol=true&ss=-N… pic.twitter.com/oASQD14P9j

SUGIMOTO Yoshiaki @catzpaw

vec2 p=FC.xy*6./r.y,q;p-=p.yx*.2;float i,w,h=fsnoise(ceil(p));for(p=(fract(p)-.5)*rotate2D(t*(h-.5)*9.)*2.;i++<3.;p*=rotate2D(PI/3.),q=abs(p*5.),w=abs(p.x),o+=(step(fract(abs(h*.9+q.x-q.y)),.3)+step(w,.02))*step(w,.2)*step(q.x+q.y,3.+h+h)); #つぶやきGLSL bit.ly/3HZ9Hvo pic.twitter.com/cIw6bgHQd1

SUGIMOTO Yoshiaki @catzpaw

久々のGLSLシェーダー。キャノンサーストンマップ。 shadertoy.com/view/stVyDh どっちかというとフラクタルよりもサウンドドライバの改修がメイン。グラボの種類に関わらず同じシーケンスが生成されるようになったはず。 pic.twitter.com/ddGjt2oN3O

SUGIMOTO Yoshiaki @catzpaw

float l,i,v,e;for(vec3 q,p,d=normalize(FC.stp-r.xyy*.5)*rotate3D(t*.3,FC.qpq);i++<2e2;o.rgb+=hsv(l,.2/e,v/7e4)){p=d*l+.2;v=4.;for(int j=0;j++<4;p=1.9-abs(p*e-FC.pqp))v*=e=max(8./dot(p,p+p),.2);l+=min(length(p.xz)-.2,p.y)/v*.7;} #つぶやきGLSL bit.ly/3xawRcr pic.twitter.com/WGJZEawFvc

SUGIMOTO Yoshiaki @catzpaw

float l,i,e;vec3 q,p=FC.qpp;for(p.xz-=t;i++<150.;o+=e/2e2){p.xz=mod(p.xz+4.,8.)-4.;q=p+=normalize(FC.stp*2.-r.xyy)*e*.2;for(l=e=1.;l>.2;l*=.8)q=abs(q*1.2),e=min(e,max((q.y-=1.5)-.1,q.x+q.z-l*.2)),q*=rotate3D(l,FC.qqp-.75);e=min(e,p.y+q.z*.1);}o.gb-=q.y/i*FC.pq; #つぶやきGLSL pic.twitter.com/DrPbaAkI9K

SUGIMOTO Yoshiaki @catzpaw

float e,v,i,l; vec3 q,p,d=normalize(vec3(FC.xy*2.-r,r.y)); for(p.z-=.5;i++<1e2;l+=e){ q=(p+=d*e)*rotate3D(t,vec3(1)); v=e=1.; for(int j=0;j++<4;) q=abs(q)-.5, e=min(e,length(q)-.1)/v, q*=(v*=1.2); }o.rgb+=hsv(l,.7,.3/l); #つぶやきGLSL bit.ly/3lPPLyH pic.twitter.com/2XRCv412Bx

SUGIMOTO Yoshiaki @catzpaw

float l,i,v,e;vec3 q,p,d=normalize(FC.stp*2.-r.xyy)*rotate3D(t*.3,FC.pqp);for(p+=5.;i++<2e2;o.rgb+=hsv(l/i,l,e*.1)){q=p+=d*e;q.xz*=rotate2D(t*.1);l=1.;for(int j=0;j++<8;l*=v)q=2.*clamp(q,-.8,.9)-q,q*=v=max(.9/dot(q,q),.7),q+=.13;e=.1*q.y/l;} #つぶやきGLSL bit.ly/3NChsGV pic.twitter.com/QkWbFQJNG6

SUGIMOTO Yoshiaki @catzpaw

float e,l,i,x=t/1e2;vec3 q,p,d=FC.stp-r.xyy*.5;for(p.xy-=4.;i++<1e2;e=-e){o+=exp(-e*i)/1e2;q=(p+=d*e/r.y*.7)*rotate3D(t*.3,hsv(x,2.,sin(x)));for(l=6.;l>.03;l*=.6)q.xz*=rotate2D(x/l),q=abs(q)-l,e=min(e,max(q.x,max(q.y,q.z))),o.arb-=q/3e4;} #つぶやきGLSL bit.ly/3sXVlDa pic.twitter.com/cTZotNOWmj

SUGIMOTO Yoshiaki @catzpaw

float l,i,v,e;vec3 p,q,d=normalize(FC.stp*2.-r.xyy);for(p.z=7.;i++<2e2;l+=e=min(length(q-q.zxy)-.2,6.)){o+=i>1e2?d=vec3(.3),e+=1e-4,e/5e2:exp(-e*1e2)/50.;q=p+=d*e*.5;q.xz*=rotate2D(t*.2);for(v=6.;v>3.;v*=.9)q=abs(q)-v;}o=o*FC.qqpq*l/i; #つぶやきGLSL bit.ly/38KTM4G pic.twitter.com/Ilm1YzuNOA

SUGIMOTO Yoshiaki @catzpaw

float d=.1,e,i,j,l,z;vec3 p,q;for(p.x=1.7;i++<1e2;d=.5*log(l)*l/d,o+=exp(-d*1e7)/1e2)for(q=p+=(FC.qst*2.-r.yxy)/r.y*d,j=d=1.;j++<9.;l<3.?q.y=mod(q.y+floor(cos(t)),2.)-1.,e=sin(q.z/l)*6.-t,z=pow(l,8.),d=z/l*8.*d+.5,q=p+vec3(cos(e),sin(atan(q.y,q.x)*8.),sin(e)*.4)*z:p)l=length(q); pic.twitter.com/KUhucp9VjV

SUGIMOTO Yoshiaki @catzpaw

ジャイロイド float i,e;vec3 p,q,d=vec3((FC.xy*2.-r)/r.y,-2);mat3 m=rotate3D(t,hsv(t*.1,sin(t),.1));for(p.z=20.;i++<2e2;q=(p+=d*e)*m,e=max(abs(dot(sin(q),cos(q.zxy)))-.3,abs(length(p)-8.)-.7)*.2)o+=i>1e2?d/=d,log(e+=1e-6)/7e2:exp(-e*2e2)/1e2; #つぶやきGLSL bit.ly/3LHhjR6 pic.twitter.com/xlGRVh0usI

SUGIMOTO Yoshiaki @catzpaw

float l,i,v,e;vec3 q,p=vec3(3,-.5,2),d=(FC.stp-r.xyy*.5)/r.y;mat2 m=rotate2D(t*.2);for(p.xz*=m,d.xz*=m;i++<3e2;e=max(min(++v,-e),v-3.)){o+=i>2e2?d/=d,(e+=1e-4)/i:exp(-e*1e4)/2e2;q=p+=d*e*.7;v=q.y;for(l=3.;l>.04;l*=.6)q.xz*=rotate2D(5.),q=abs(q)-l,e=min(e,max(q.x,max(q.y,q.z)));} pic.twitter.com/G8UqfTZyGI

SUGIMOTO Yoshiaki @catzpaw

float l,i,v,e;vec3 q,p=vec3(4,-.8,4),d=(FC.stp-r.xyy*.5)/r.y;mat2 m=rotate2D(t*.2);for(p.xz*=m,d.xz*=m;i++<3e2;e=max(min(++v,-e),v-4.)){o+=i>2e2?d/=d,log(e+=1e-4)/4e3:exp(-e*1e3)/2e2;q=p+=d*e*.7;v=q.y;for(l=4.;l>.05;l*=.6)q=abs(q)-l,e=min(e,max(q.x,(max(q.y,q.z))));}#つぶやきGLSL pic.twitter.com/gr8PR1nIpp

SUGIMOTO Yoshiaki @catzpaw

float i,e=.1;vec3 p,q;for(p.y=.8,p.z-=t;i++<3e2&&e*e>1e-6;o+=.004)q=p+=normalize((FC.stp*2.-r.xyy)/r.y)*e,q.xz=abs(fract(p.xz)-.5),e=min(min(.2,p.y),max(q.x,max(q.y+fsnoise(ceil(p.xz))-abs(p.x)+1.1,q.z))-.3);sin(q.z*9.)>1.-i/4e2?o+=q.yzyy:FC; #つぶやきGLSL bit.ly/3yVWTBv pic.twitter.com/EFS8CAkg0A

SUGIMOTO Yoshiaki @catzpaw

float l,i,e=.1;vec3 p,q;for(p.x-=t*.03,p.z-=1.;i++<2e2&&e>1e-2&&l<50.;o-=.02/exp(e))p+=(vec3((FC.xy*2.-r)/r.y,1))*3e-3,q=p*28.+t,e=max(abs(dot(cos(q),sin(q.zxy)))-.2,abs(p.z)-.8),l+=e;o.rgb+=hsv(.3+l/1e2,.4,-p.z*2.); #つぶやきGLSL bit.ly/3MxY2TL pic.twitter.com/bVu9ageLCd

SUGIMOTO Yoshiaki @catzpaw

float d=.1,e,h,i,j,l,z;vec3 p,q;p.x-=1.7;for(o++;i++<1e2&&d>4e-5;o-=.01/exp(d)){for(q=p+=vec3(1.,(FC.xy*2.-r)/r.y)*d,j=d=1.;j++<9.;l<2.?e=acos(q.z/l)*6.+t,h=atan(q.y,q.x)*6.+t,z=pow(l,6.),d=z/l*6.*d+1.,q=p+vec3(sin(e)*cos(h),sin(e)*sin(h),cos(e))*z:p)l=length(q);d=.5*log(l)*l/d;} pic.twitter.com/JFo1liGNXn

SUGIMOTO Yoshiaki @catzpaw

レイを太陽に向けてちょっとだけずらしてから距離関数を計算すると、陰が付くよ… for(float l,i,e;++i<1e2;o+=.01/exp(max(s,e)*1e6))l+=e=length(mod(normalize(vec3((FC.xy*2.-r)/r.y,-1.))*l-i/1e6*vec3(sin(t),1,1),1.)-.5)-.3; #つぶやきGLSL bit.ly/3lHVHtH pic.twitter.com/PSROH5oQr1

SUGIMOTO Yoshiaki @catzpaw

#define L(I)for(I=-2.;++I<2.;) float d,e,v,i,l,h,f;vec2 p=FC.xy*20.*FC.pq/r.y,q,b;for(p+=t;i<1.;i+=.03){e=f=2.;L(q.x)L(q.y){l=fsnoise(floor(p)+q);b=abs(q-fract(p)+l);d=b.x+b.y;d<e?f=e,e=d,h=l:(d<f?f=d:e);}p.y-=.1;v=step(.1,f-e)*h>i?i:v;}o+=cos(v*90.)*v+1.-v-v; #つぶやきGLSL pic.twitter.com/hIumqGNiI2

SUGIMOTO Yoshiaki @catzpaw

float a,l,i,v,e=.1;vec3 q,p,d=vec3((FC.xy-r*.5)/r.y,1);for(p.y+=8.5,p.z=t;++i<3e2&&e>1e-5;l+=e){p+=d*e;v=3.;a=fsnoise(ceil(p.xz*v+.5))*v+v;e=s;for(int j;++j<6;v*=a)q=abs(mod(p*v,2.)-1.),q=max(q,q.zyx),e=max(e,(min(q.y,q.z)-.3)/v);}o+=l/9.; #つぶやきGLSL bit.ly/3LfKz1i pic.twitter.com/j3xZuvosOx

SUGIMOTO Yoshiaki @catzpaw

100重2D視差スクロール。21世紀のパソコンは速いですね！ vec2 p;for(float v=sin(t)*10.,i,a=fract(v);i++<1e2;p=(FC.xy*2.-r)/r.y*(1.+i-a)+t*10.,o+=smoothstep(.8,.9,fsnoise(ceil(p)*(floor(v)+i))-length(fract(p)-.5))/(i-a)); #つぶやきGLSL bit.ly/3sFmWJ3 pic.twitter.com/1HGqxVszau

SUGIMOTO Yoshiaki @catzpaw

float v,e,i,j,z;for(vec4 p;++i<=80.;o.rgb+=hsv(e*v,.7,.01/e/i)){p=acos(.6*sin(vec4(t*.2,z*vec3((FC.xy*2.-r)/r.y,1)*rotate3D(t*.1,FC.qpp)-FC.pqq*t)))-2.8;for(j=s,v=1.;++j<5.;v*=e=max(1.3,2./dot(p,p)),p=abs(p)*e-2.);z+=e=length(p.xy-p.zw)/v;} #つぶやきGLSL pic.twitter.com/7DROWAtTRY

SUGIMOTO Yoshiaki @catzpaw

float l,i,v,e=.1;vec3 q,p,d=normalize(vec3((FC.xy*2.-r)/r.y,e));for(p.z=t*e;++i<1e2&&e>1e-5;l+=e){p+=d*e;v=1.;e=s;for(int j=0;++j<6;v*=3.)q=abs(mod(p*v,2.)-1.),q=max(q,q.yzx),e=max(e,(min(q.x,min(q.y,q.z))-.62)/v);}o.rgb=hsv(p.z,.1,9./i); #つぶやきGLSL bit.ly/3wzh8SK pic.twitter.com/rWJG7g41Q2

SUGIMOTO Yoshiaki @catzpaw

五反田 vec2 p=FC.xy/r-.5;int a=int(p.x*18.-10.5)%19+int(4.-p.y*9.)*19,x=a%31,y=a/31;o=0<a&&a<124&&(int[](69463998,301457194,698684749,1025785)[y]&1<<x)>0?hsv(.1,2.,snoise2D(p*8.-t-t)-sin(p.y)*9.+1.).rgbb:o+fsnoise(p.yy+t); #つぶやきGLSL bit.ly/39kVPMq pic.twitter.com/Gh3EN81oFV

SUGIMOTO Yoshiaki @catzpaw

float l,i,v,e;vec3 c=FC.qqq,p,q,d=vec3((FC.xy*2.-r)/r.y,1.);for(p.z+=t;++i<3e2;p+=d*e*.1){v=fsnoise(ceil(p.xz))*5.;q=mod(p,1.)-.5;q.y=p.y+sin(t+v);l=length(q);e=l-.3;e<.05?c*=hsv(v,.5,.7),e=3.,d=reflect(d,q/l):p;}o.rgb=c*dot(d,d.yyy)*2.; #つぶやきGLSL bit.ly/3PoC2fY pic.twitter.com/GLcwZdvIVa

SUGIMOTO Yoshiaki @catzpaw

ガウス分布ノイズ #define R(S)fract(sin(time*S)*7e4) #define F(O)sqrt(-2.*log(a))*O(6.283*b) vec2 mainSound(float time){ float a=R(1116.17),b=R(1124.31); return vec2(F(cos),F(sin))*.2-.1; } bit.ly/38uaGnI pic.twitter.com/qaxJwXXVF2

SUGIMOTO Yoshiaki @catzpaw

#define F q=fract(p)-.5;g=fract(p*2.+.05);o.q=q.x*sign(ceil(fsnoise(ceil(p))-.5+sin(t)*.2)-.5);o-=step(.99,cos(o.q+q.y))*step(o.q*q.y,0.)*step(.1,min(g.x,g.y)) vec2 p=(FC.xy-r*.5)/r.y*mat2(5,5,-5,7)+t,q,g;F*.5;p.y+=.1;F*.2-FC.baba-(p.y-t)*.1; #つぶやきGLSL bit.ly/37BlsZ0 pic.twitter.com/pb3Cl5q2QL

SUGIMOTO Yoshiaki @catzpaw

お豆腐 vec2 p=(FC.xy-r*.5)*3./r.y;int a=int(p.x*6.-13.5)%25+int(3.5-p.y*4.)*25,x=a%31,y=a/31;o.rgb=a>0&&a<125&&abs(p.x)<1.9&&(ivec4(0x14AEAEEE,0x52528AA9,0x55494AEA,0x71772728)[y]&1<<x)>0?hsv(p.y+.2,.5,sin(p.y*PI2+1.)+1.3):FC.pqq-cos(p.y); #つぶやきGLSL bit.ly/3kTaykn pic.twitter.com/rOupIjAFYM

拡大

SUGIMOTO Yoshiaki @catzpaw

#define C(P)int(texture(b,mod(ceil(P)+.5,r)/r).a) int i,n;vec2 q=FC.xy,p=q-r/2.;p=vec2(log(length(p)),atan(p.y,p.x));for(o+=C(p*r/PI2)>0?f:s;i<9;n+=C(q+vec2(i/3,++i%3)-1.));o.q=n==3||n==4&&C(q)>0||.996<fsnoise(p)?f:s;o.rgb+=hsv(.1,.5,5.-p.x); #つぶやきGLSL bit.ly/3N2Bzhc pic.twitter.com/QqoK6PKWWY

SUGIMOTO Yoshiaki @catzpaw

銀河帝国の興亡 #define C(P)texture(b,mod(ceil(P)-.5,r)/r).q int i,c;vec2 q=FC.xy,p=q/r.y;float d=.99,e=C(p*FC.pq*2e2*(m.y+d)+m*r);for(o.rgb+=hsv(e-.5,e<d?d:s,e);i<9;c+=C(q+vec2(i/3,++i%3)-d)>d&&i!=4?1:0);o.q=c==3||c==2&&C(q)>d||sin(t)-fsnoise(q)>d?f:C(q)*d; #つぶやきGLSL pic.twitter.com/ekY4WITDWs

SUGIMOTO Yoshiaki @catzpaw

float l,i,v,e;for(vec3 p,O=vec3(.1,fract(t/4e2)*PI,.16),R=normalize(vec3((FC.xy-r*.5)/r.y,.9));++i<1e2;o.rgb+=hsv(l,.8,e/3e6)){p=O+R*l;p.y-=l*.5;e=2.;for(int j;++j<9;e/=v=min(dot(p,p),.3723),p/=v)p=mod(abs(p-.1),PI)-1.;l+=(p.x+p.z+4.5)/e;} #つぶやきGLSL bit.ly/38ZvP9w pic.twitter.com/8VTeFs31d5

SUGIMOTO Yoshiaki @catzpaw

vec2 p=(FC.xy*2.-r)/r.y;p*=1.+exp(p.y);float v,i,w,z,y=p.y;for(w=sin(snoise2D(p*vec2(.5,1)))*.7;++i<8.;v+=(.5-abs(w*.4+sin(w+(t+p.y)*i)))*(sin((p.x+p.y)*4.)*.5+1.)/i,p.y+=i,p*=rotate2D(cos(i*.2)));o.rgb+=hsv(.2+y*.04,.2,.6+v*.15); #つぶやきGLSL bit.ly/38Wgx5g pic.twitter.com/YgByjTscC4

SUGIMOTO Yoshiaki @catzpaw

float e,i,v,z;vec3 p,O=FC.wwz,R=normalize(vec3((FC.xy-r*.5)/r.y,2));for(O.xy*=rotate2D(t/2e1),R.xz*=rotate2D(t/7.);++i<1e2;o.rgb+=hsv(v,.7,log(e)/6e2)){p=O+R*z;e=3.;for(int j;++j<9;e/=v=min(dot(p,p),.8),p/=v)p=mod(p,2.)-1.;z+=dot(p,p)/e;} #つぶやきGLSL bit.ly/387YI37 pic.twitter.com/gQEsfZrb2I

SUGIMOTO Yoshiaki @catzpaw

vec3 p,q,O=vec3(t,3,t),R=vec3((FC.xy*2.-r)/r.y,-1);R.yz*=rotate2D(.9);float d=f,i,l,v;for(;++i<203.;i>2e2?O+=.1:O)p=O+R*l,v=p.y,p.y+=sin(fsnoise(ceil(p*.5).xz)*6.+t),p.xz=mod(p.xz,2.)-1.,l+=d=min(length(p)-.5,v-.5)*.5;o.rgb+=d*9.*(v>.61?abs(R):1.-p.yyy); #つぶやきGLSL pic.twitter.com/9oIGvxNJ3P

SUGIMOTO Yoshiaki @catzpaw

#define F min(length(p)-fsnoise(q.xz)+.6,p.y) float l,i,d=f;vec3 p,q;for(;++i<3e2&&abs(d)>1e-3;p.xz+=t*2.,p.y+=3.-length(sin(p*.2))-l*.4,q=ceil(p),p.xz=mod(p.xz,1.)-.5,l+=d=F*.4)p=vec3((FC.xy-r*.5)/r.y,2.)*l;p+=.05;o+=(d<.1)?F*i/l+l/2e2:l; #つぶやきGLSL bit.ly/3w4qyFp pic.twitter.com/owmWQZUJtN

SUGIMOTO Yoshiaki @catzpaw

vec2 p=FC.xy/r.y,f,g;o=texture(b,FC.xy/r)*vec4(2,7,8,9)*.1;for(float i,v;++i<50.;f=p*i+vec2(.5,-t*4.),v=snoise2D(floor(f)*.1+i),f=fract(f)+vec2(cos(v*7e2+t*5.),sin(v*1e3+t*6.))*.3-.5,o+=v>.6?pow(clamp(1.-dot(f,f),0.,1.),1e2)*(9./i):0.); #つぶやきGLSL bit.ly/3KRWYbL pic.twitter.com/GkBz53nARX

SUGIMOTO Yoshiaki @catzpaw

#define F(X)snoise3D((X+L*t*.1)*20.)*.2 #define C(V)hsv(F(V),.3,F(V)+.5) vec2 p=1.2*vec2(FC.xy*2.-r)/r.y;float d=dot(p,p);vec3 N=vec3(p,sqrt(abs(1.-d))),L=vec3(0,0,1.);o.rgb+=d<1.?C(N)*(dot(N,L)+1.):C(-N/d)+C(-N.zzz/d); #つぶやきGLSL bit.ly/39CChDL pic.twitter.com/lcHv7sbdSZ

SUGIMOTO Yoshiaki @catzpaw

float i,z,e=1.;ivec3 q;vec3 O=vec3(1),R=vec3((FC.xy-r*.5)/r.y,1),p;R.xz*=rotate2D(t*.2);for(O.xz+=t*30.;++i<5e2&&e>.1;p=O+R*z,q=ivec3(floor(p)),z+=e=mod(float(q.x^q.y^q.z)*.89,2.)>1.9||p.y<(-5.)?.0:.5);o.rgb=hsv(1.-p.y/1e3,.2,z/210.); #つぶやきGLSL bit.ly/3KuMK0E pic.twitter.com/MXrHRgiFvl

SUGIMOTO Yoshiaki @catzpaw

float i,z=1.,e=z;ivec3 q;for(vec3 p,O=vec3(9,sin(t*.2)*99.,60);++i<2e2&&e>.1;p=(O+(normalize(vec3((FC.xy-r*.5)/r.y,1))*z))*rotate3D(t*.1,O.xzy),q=ivec3(floor(p)),z+=e=mod(float(q.x^q.y^q.z)*.9,1.9)>1.8?length(p-vec3(q)-.5)-.4:.5);o+=z/1e2; #つぶやきGLSL bit.ly/3kuu5Yj pic.twitter.com/ezWbggOM7F

SUGIMOTO Yoshiaki @catzpaw

vec2 O=(FC.xy*2.-r)/r.y,p=mod(O-t,2.)-1.;float s=2.,a,i=dot(p,p),v=sqrt(1.-i);p=O+p*i*i*.4;for(p.x-=sin(p.y)*.4;++i<4.;p*=rotate2D(a)*s,a+=.7,s*=1.2,p.y-=log(pow(abs(sin(p.x)),1.-a)));s=sin(p.y);o.rgb=hsv(s+O.x,s*.4,abs(s)*v); #つぶやきGLSL bit.ly/38yiqVx pic.twitter.com/DdHgawBsy8

SUGIMOTO Yoshiaki @catzpaw

for(float z,e,i,s;++i<50.;o.rgb+=hsv(z,1.-s,e/z)/150.){e=2.;vec3 p=vec3(z*(FC.xy-r/e)/r.y,z-11.)*rotate3D(t/e,vec3(4,2,1));for(int j;++j<8;)p=abs(p)+cos(t*.21)*.13-.79,e/=s=dot(p,p)+.07+cos(t)*.02,p/=s;z+=dot(p,p)/e;}o-=.6; #つぶやきGLSL bit.ly/3vTpEvc pic.twitter.com/c9ZeqbKiyb

SUGIMOTO Yoshiaki @catzpaw

for(float z,e,i,s;++i<60.;o+=e*vec4(z,1,s,1)/4e5){e=2.;vec3 c=vec3(4,.1,1.5),p=vec3(z*(FC.xy-r/e)/r.y,ceil(sin(t/3.))*1.4-1.6+z)*rotate3D(t/e,c.zxy)+c.zyz;p.y+=1.4;for(int j;++j<7;p=abs(p)-1.5,e/=s=min(dot(p,p),.4),p/=s);z+=(p.x+p.z)/e;} #つぶやきGLSL pic.twitter.com/Z6ZPqqMMd0

SUGIMOTO Yoshiaki @catzpaw

for(float z,e,i,s;++i<60.;o+=e*vec4((sin(t*3.)+1.1)/i,s,s,1)*2e-5){e=4.;vec3 p=vec3(z*(FC.xy-r/e)/r.y,z-clamp(cos(t*.04)*9.,1.,4.))*rotate3D(t*.1,r.xxx);for(int j;++j<7;p=abs(p)-.9,e/=s=min(dot(p,p),.9),p/=s);z+=length(p.xz)/e;} #つぶやきGLSL pic.twitter.com/WmnK3GfTbb

SUGIMOTO Yoshiaki @catzpaw

float e=.02,l=.3,d=l,a=floor(t),v;vec3 D=normalize(vec3((FC.xy*2.-r)/r.y,1))*rotate3D(t*l,r.xxx),p;for(;v<1.&&d>e;v+=e)p=D*l,d=mix(snoise3D(p+a),snoise3D(p+a+1.),fract(t))+.6-l*.1,l+=(d-min(d*d,d))*.7;o.rgb=hsv((l+t)*.1,v/(l+v),v); #つぶやきGLSL pic.twitter.com/JrgIspZdCa

SUGIMOTO Yoshiaki @catzpaw

#define F(P)snoise2D(P)+.1 #define M(P)pow(mix(F(P+a),F(P+a+5.),smoothstep(0.,.8,fract(s))),.3) float s=t*.5,a=floor(s)*5.;vec2 p=(FC.xy*2.-r)/r.y,e=vec2(.02,0);vec3 h=vec3(M(p+e.xy),M(p+e.yx),M(p));h=cross(h.xzz,h.zzy)*9.;o.rgb+=h+dot(h,h); #つぶやきGLSL bit.ly/3vj0xTH pic.twitter.com/ftEwZePbse

SUGIMOTO Yoshiaki @catzpaw

vec2 O=(FC.xy*2.-r)/r.y;float a=atan(O.x,O.y),b=PI/3.,c;vec2 p=vec2(log(dot(O,O))+sin(mod(a,b)+b)*1.5-t,3.*a/PI),q=mod(p,1.)-.5;c=snoise2D(floor(p)+t*.2)*PI;o.rgb+=hsv(atan(q.x,q.y)/PI+c,.7,sin(floor(dot(q,q)*16.))+dot(O,O)); #つぶやきGLSL bit.ly/37LJdOa pic.twitter.com/sv0q3ni8BJ

SUGIMOTO Yoshiaki @catzpaw

#define R(A) rotate3D(A*l,vec3(0,1,0)) float v,l=.1,h,d=l;vec3 O=vec3(0,t,20)*R(t),D=normalize(vec3((FC.xy*2.-r)/r.y,1))*R(-t),p;for(;v<1.&&d>.001;v+=.01)p=O+D*l,h=sin(p.y),d=1.-length(sin(p)),l+=d=max(d-h,d+h);o=mix(o+v,vec4(0,v,1,1),l*.04);#つぶやきGLSL bit.ly/3vEgS4l pic.twitter.com/9UKuIm2QkH

SUGIMOTO Yoshiaki @catzpaw

vec2 p=((FC.xy*2.-r)/r.y),q=vec2(.988,.11);p=vec2(log(length(p)),atan(p.y,p.x));p=vec2(p.x*q.x-p.y*-q.y,p.x*-q.y+p.y*q.x)/q.x;p=abs(vec2(cos(p.y),sin(p.y))*exp(mod(p.x,.699))*rotate2D(t));o.rgb=hsv(dot(p,p),.2,step(max(p.x,p.y),1.2)); #つぶやきGLSL bit.ly/3k8gUw4 pic.twitter.com/QyAcEHz5rM

SUGIMOTO Yoshiaki @catzpaw

#define F d=max(d,(1.2-length(sin(p*s)))/s);p+=s*=1.3 float l=.1,d=l,s,i;vec3 O=vec3(3,6,t),p,D=normalize(vec3((FC.xy*2.-r)/r.y,.7))*rotate3D(t*.3,O.xxy);for(;i<1.&&d>1e-4;i+=.005){p=O+D*l;d=0.;s=1.;F;F;l+=F;}F*5.;F;o+=i+sin(d*1e2)*.1;o.r-=d; #つぶやきGLSL bit.ly/3LazT4J pic.twitter.com/Wgp2jnMRgX