Note that in your case you could also just use
a uv mapped pigment with clear areas, since
the height of what you are describing is very
thin anyways.
#declare decal = texture {
pigment {
uv_mapping
object {
text {ttf "timrom.ttf" "Sample Text" 2,0
scale <0.2,0.2,1>
translate <0,0.4,-1>
}
Clear
Red
}
}
};
sphere {<0,0,0>,1
texture {decal}
}
