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intro.h
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intro.h
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/* File generated with Shader Minifier 1.1.4
* http://www.ctrl-alt-test.fr
*/
#ifndef INTRO_H_
# define INTRO_H_
const char *intro_glsl =
"uniform sampler2D T;"
"uniform int s;"
"float v=float(s)/88200.;"
"const vec3 m=vec3(0.,.001,1.);"
"const float i=3.14159;"
"float x(float v)"
"{"
"return min(1.,max(0.,v));"
"}"
"float f(float v)"
"{"
"return fract(sin(v)*43758.5);"
"}"
"float n(vec2 k)"
"{"
"return f(dot(k,vec2(129.47,37.56)));"
"}"
"float t(vec2 v)"
"{"
"vec2 k=floor(v);"
"v=fract(v);"
"v*=v*(3.-2.*v);"
"return mix(mix(n(k),n(k+m.zx),v.x),mix(n(k+m.xz),n(k+m.zz),v.x),v.y);"
"}"
"float d(vec2 v)"
"{"
"return.5*t(v)+.25*t(v*2.3)+.125*t(v*4.1);"
"}"
"float d(vec3 k,vec3 v)"
"{"
"return k=abs(k)-v,max(k.z,max(k.x,k.y));"
"}"
"float d(float k,float v,float m)"
"{"
"return max(max(k,v),(k+m+v)*sqrt(.5));"
"}"
"float f(vec3 k,vec3 v)"
"{"
"return k=abs(k)-v,d(d(k.x,k.z,1.),k.y,1.);"
"}"
"vec3 n(vec3 k,vec3 v)"
"{"
"return mod(k,v)-v*.5;"
"}"
"vec2 t(vec2 k,vec2 v)"
"{"
"return mod(k,v)-v*.5;"
"}"
"mat3 r(float v)"
"{"
"float k=sin(v),z=cos(v);"
"return mat3(1.,0.,0.,0.,z,-k,0.,k,z);"
"}"
"mat3 p(float v)"
"{"
"float k=sin(v),z=cos(v);"
"return mat3(z,0.,k,0.,1.,0,-k,0.,z);"
"}"
"mat3 c(float v)"
"{"
"float k=sin(v),z=cos(v);"
"return mat3(z,k,0.,-k,z,0.,0.,0.,1.);"
"}"
"float z=v/128.,y=fract(z);"
"int a=1+int(floor(z));"
"float e,k;"
"mat3 g=c(.2),o=c(.3),l=c(.5);"
"float w(vec3 m)"
"{"
"if(a<2)"
"{"
"e=m.y;"
"k=-d(m,vec3(4.,3.,10.));"
"float z=max(-k,d(vec3(m.xy-vec2(0.,3.),fract(m.z)-.5),vec3(10.,.3,.1)));"
"k=max(k,d(m,vec3(5.1,3.1,10.1)));"
"k=max(k,-d(m+vec3(1.5,1.,10.),vec3(2.,3.,1.)));"
"k=min(k,z);"
"}"
"else"
" if(a==2)"
"{"
"e=m.y;"
"m.y-=4.;"
"vec3 z=vec3(mod(m.x,9.)-4.5,m.yz);"
"k=d(m,vec3(50.,8.,16.));"
"k=max(k,-f(z,vec3(4.,3.,15.)));"
"k=max(k,-f(z,vec3(4.,10.,7.)));"
"k=max(k,-f(z-vec3(0.,0.,14.),vec3(10.,4.,5.)));"
"k=min(k,d(z-vec3(0.,6.,-7.),vec3(1.2)));"
"k=max(k,-d(z-vec3(0.,0.,-12.),vec3(3.,10.,3.)));"
"k=max(k,-d(z-vec3(0.,0.,-12.),vec3(6.,4.,3.)));"
"}"
"else"
" if(a==3)"
"{"
"e=m.y;"
"k=min(m.x+4.,6.-m.y);"
"vec3 z=m;"
"z.z=mod(m.z,10.)-5.;"
"float i=d(z,vec3(1.,10.,1.));"
"z.x-=4.;"
"z.y+=-1.5;"
"float x=d(z,vec3(.5,10.,.5));"
"k=min(k,x);"
"k=min(k,d(m-vec3(5.,0.,0.),vec3(1.,1.,100.)));"
"k=max(k,-min(i,6.4-m.y));"
"k=max(k,m.x-6.);"
"k=min(k,m.z+30.);"
"e=max(e,m.x-6.);"
"}"
"else"
" if(a==4)"
"{"
"e=m.y;"
"k=m.z+30.;"
"m.x=abs(m.x);"
"k=min(k,10.-m.x);"
"k=min(k,-m.y+24.8);"
"k=max(k,-d(vec3(t(m.xz,vec2(2.,4.)),m.y-25.).xzy,vec3(.8,1.,1.6)));"
"k=max(k,m.y-25.);"
"float z=d(vec3(m.xy,mod(m.z,10.)-5.),vec3(100.,4.5,1.8));"
"m-=vec3(30.,0.,-20.);"
"m*=g;"
"k=min(k,d(m,vec3(20.)));"
"m*=o;"
"m-=vec3(5.,10.,-7.);"
"k=min(k,d(m,vec3(20.)));"
"m*=l;"
"m-=vec3(7.,3.,-10.);"
"k=min(k,d(m,vec3(20.)));"
"k=max(k,-z);"
"}"
"else"
"{"
"e=m.y;"
"e=min(e,d(m,vec3(.3,.1,30.)));"
"k=-d(m,vec3(3.,4.,30.));"
"k=max(k,d(m,vec3(4.,4.4,31.)));"
"vec3 z=vec3(m.x-3.,m.y-1.5,mod(m.z,10.)-5.);"
"k=max(k,-d(z,vec3(2.,1.2,1.)));"
"k=max(k,-d(vec3(m.x,m.y+4.-(v-512.-64.)/16.-2.*max(0.,v-684.),mod(m.z,1.)-.5),vec3(20.,4.,.4)));"
"}"
"return min(e,k);"
"}"
"vec3 u(vec3 v)"
"{"
"return normalize(vec3(w(v+m.yxx)-w(v-m.yxx),w(v+m.xyx)-w(v-m.xyx),w(v+m.xxy)-w(v-m.xxy)));"
"}"
"float c(vec3 k,vec3 m,float v,float z,int y)"
"{"
"for(int i=0;i<y;++i)"
"{"
"float a=w(k+m*v);"
"v+=a;"
"if(a<.002*v||v>z)"
"break;"
"}"
"return v;"
"}"
"vec3 b(vec2 v)"
"{"
"return mix(vec3(.467,.22,.1),vec3(.627,.35,.216),smoothstep(.2,.8,d(v*3.)));"
"}"
"vec2 b(vec3 k,vec3 v)"
"{"
"vec3 z=cross(v,m.zxx),y=cross(v,m.xxz),x,f;"
"if(dot(z,z)>dot(y,y))"
"x=z;"
"else"
" x=y;"
"f=cross(v,x);"
"return vec2(dot(k,f),dot(k,x)).xy;"
"}"
"void main()"
"{"
"vec2 z=vec2(640.,720.),m=gl_FragCoord.xy/z*vec2(3.56,2.)-1.;"
"mat3 c=r(0.);"
"vec3 g,l,o,t;"
"g=vec3(-.5+y,1.8,5.);"
"vec3 h=vec3(-2.,1.,-1.),C=vec3(0.);"
"float D=v,q=.15;"
"if(a<2)"
"g.z=-3.+3.*y;"
"else"
" if(a==2)"
"g.z=16.,g.x=3.-6.*y,c=r(-.2);"
"else"
" if(a==3)"
"h.z=-h.z,c=p(-.15);"
"else"
" if(a==4)"
"h=vec3(1.,2.,1.),g=vec3(5.-6.*y,1.8,9.),c=p(-.3+.2*y)*r(-.3);"
"else"
" g=vec3(2.,1.8+.1*abs(sin(y*60.)),5.-y*10.),c=p(-.5),q=mix(q,.6,step(576.,v));"
"l=c*normalize(vec3(m,-2.));"
"o=c*normalize(vec3(m+vec2(2.,1.)/z,-2.));"
"h=normalize(h);"
"for(int Z=0;Z<16;++Z)"
"{"
"vec3 Y=g,X=mix(l,o,vec3(f(D),f(D+1.),f(D+2.))),W=vec3(0.),V=vec3(1.);"
"for(int U=0;U<4;++U)"
"{"
"float S=.9,R=50.,Q=0.;"
"for(int P=0;P<40;++P)"
"{"
"float O=w(Y+X*Q);"
"Q+=O;"
"if(O<.002*Q||Q>R)"
"break;"
"}"
"vec3 O=vec3(0.),P=vec3(.75,.75,.73),M=vec3(0.,1.,0.);"
"if(Q>R)"
"O=vec3(2.)+vec3(30.,20.,10.)*pow(max(0.,dot(X,h)),10.),P=vec3(0.);"
"else"
"{"
"Y=Y+X*Q;"
"M=u(Y);"
"vec2 L=b(Y,M);"
"Y+=M*.01;"
"float K;"
"if(e<k)"
"S=9.*smoothstep(.4,.45,d(L/2.)*.85+.15*d(L*8.))+.01,K=smoothstep(.45,.6,d(L/4.)+.5*x(-10.-Y.z));"
"else"
"{"
"P*=.6+(.2+.2*smoothstep(.9,.99,sin(i*d(L*4.))))*d(L*16.);"
"vec2 J=floor(L/2.),I=L/2.-J;"
"P*=1.-.3*n(J)-.4*step(.99,max(I.x,I.y));"
"K=smoothstep(.5,.7,d(L/4.));"
"}"
"P=mix(P,vec3(.3,.44,.15)*(.3+.7*d(L*16.)),K);"
"}"
"W+=V*O;"
"V*=P.xyz;"
"if(all(lessThan(V,vec3(.003))))"
"break;"
"if(f(D+=X.x)<.03)"
"X=h,S=.02;"
"else"
" X=reflect(X,M);"
"X=normalize(mix(X,(vec3(f(D+=X.x),f(D+=X.y),f(D+=X.z))-.5)*2.,S));"
"X*=sign(dot(M,X));"
"}"
"C+=W;"
"}"
"gl_FragColor=vec4(C/16.,q);"
"}";
#endif // INTRO_H_