In the following scene you'll see that half the disc will disappear when
looks_like is present. If you remove the sphere all of the disc will appear.
MegaPov 0.4 renders correctly.
--
light_source { 0,1.5
looks_like { sphere { 0, 1 pigment { rgb 1 } finish { ambient 1 } } }
translate <1,2,1>*10
}
camera {
location <1,2,3>
look_at 0
}
sphere {0,1 pigment {rgb 1} }
disc {0,y,10 pigment {radial}}
