There is a way to use multiple images together in a 3D "procedural" pattern,
as follows:

#declare I1= pigment {
 image_map {
    png "warning.png" // replace with images you have
    once filter all 0
 }
}
#declare I2= pigment {
 image_map {
    png "pam.png"
    once filter all 0
 }
}
#declare I3= pigment {
 image_map {
    png "w95logos.png"
    once filter all 0
 }
}

#declare Images=
pigment {gradient z // any pattern here
        pigment_map {
                [0 I1]
                [.5 I2]
                [1 I3]
        }
}

difference {
box {0,1}
sphere {1,1}
 pigment {Images}
    translate -.5 scale 2 rotate <-120,45,0>
}

light_source {<10,10,-10>,1}

camera {
        location -8*z
        angle 30
        look_at 0
}

Not going to get this into media (I've tried and failed anyway), although it
is 3D texturing using images.

Bob H.

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