"JYR" <jyr### [at] hotmailcom> wrote:
> [a number of things]

hmmm, i should've done my homework before posting. Here is a shorter script
that displays what might be the source of the trouble.

//begin source
global_settings {
    assumed_gamma 2.2
    max_trace_level 8
}

camera {location -7.2*z look_at 0}
light_source {<3, 4, -5> rgb 1}

difference {
    box {-1, 1}
    sphere {-z, .15 pigment {rgb .1}}
    pigment {rgb 1 transmit .4}
    rotate -35*y rotate 45*x
}

//end source

It gives artifacts in the "back" sides of the box. Even worse, these
artifacts aren't even constant from run to run, i mean, by hitting the
"Run" button repetitively, the artifacts change.
BTW, i tried to attach the semi transparent pigment to the box instead of to
the difference, to no avail.
Hoping this helps,

JYR

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