"Greg M. Johnson" wrote:
> Hmm. Consider:

Interesting that variance in the scaling can trigger the bug...

Here's a shorter and clearer example:

light_source {<1,2,-3>*1000, color 1.5}
background {color <0.3,0.5,0.8>}
#declare OddScale=<2.5,2.5,2.499999999999999>;
#declare OKScale= <2.5,2.5,2.4999999999999999>;
#declare piggy=
pigment{
   gradient y
   pigment_map{[0.5,red 1][0.5,rgb <1,1,0>]}
}
blob {
   threshold .5
   sphere {
      0, 2, 1 scale OKScale
      texture {pigment {piggy}}
      rotate 45*z // pigment OK!
   }
   translate <+3,0,10>
}
blob {
   threshold .5
   sphere {
      0, 2, 1 scale OddScale
      texture {pigment {piggy}}
      rotate 45*z // pigment rotated twize!
   }
   translate <-3,0,10>
}

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