You forget that the surface may have a texture which needs to be
antialiased as well. We have to shoot all those rays in order to get the
average color of the surface.
  We also have to shoot all the rays not intersecting the surface in order
to get the average color of what is behind the surface.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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