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Sep 27th, 2008
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  1. db "float f(vec3 o){"
  2. db  "float a=(sin(o.x)+o.y*.25)*.35;"
  3. db  "o=vec3(cos(a)*o.x-sin(a)*o.y,sin(a)*o.x+cos(a)*o.y,o.z);"
  4. db  "return dot(cos(o)*cos(o),vec3(1))-1.2;"
  5. db "}"
  6.  
  7. db "vec3 s(vec3 o,vec3 d){"
  8. db  "float t=0.,a,b;"
  9. db  "for(int i=0;i<75;i++){"
  10. db      "if(f(o+d*t)<0){"
  11. db          "a=t-.125;b=t;"
  12. db          "for(int i=0; i<10;i++){"
  13. db              "t=(a+b)*.5;"
  14. db              "if(f(o+d*t)<0)b=t;else a=t;"
  15. db          "}"
  16. db      "vec3 e=vec3(.1,0,0),"
  17. db      "p=o+d*t,"
  18. db      "n=-normalize(vec3(f(p+e),f(p+e.yxy),f(p+e.yyx))+vec3((sin(p*75.)))*.01);"
  19. db      "return vec3("
  20. db              "mix( ((max(-dot(n,vec3(.577)),0.) + 0.125*max(-dot(n,vec3(-.707,-.707,0)),0.)))*(mod(length(p.xy)*20.,2.)<1.0?vec3(.71,.85,.25):vec3(.79,.93,.4))"
  21. db              ",vec3(.93,.94,.85),"
  22. db              "vec3(pow(t/9.,5.))"
  23. db              ")"
  24. db          ");"
  25. db      "}"
  26. db      "t+=.125;"
  27. db  "}"
  28. db  "return vec3(.93,.94,.85);"
  29. db "}"
  30.  
  31. db "void main(){"
  32. db  "float t=dot(gl_Color.xyz,vec3(1,256,65536))*.5;"
  33. db  "gl_FragColor=vec4(s(vec3(sin(t*1.5)*.5,cos(t)*.5,t), normalize(vec3((gl_FragCoord.xy-vec2(512,384))/vec2(512),1))),1);"
  34. db "}"
  35. db 0
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