Display "TEST_TransmissionTrace.tif" "framebuffer" "rgb"
 Display "+TEST_TransmissionTrace.tif" "file" "rgb"
 Format 320 240 1
 Projection "perspective" "fov" 45
 PixelSamples 2 2
 PixelFilter "catmull-rom" 3 3

 Translate 0 0 10
 Rotate 80 1 0 0
 Rotate 80 0 0 1

 WorldBegin

 LightSource "shadowdistant" 1 "from" [100 100 100] "to" [100 100 101] "intensity"
 2.6 "shadowname" "raytrace"

 Attribute "visibility" "transmission" "opaque"

 LightSource "ambientlight" 2 "intensity" 0.2

 #Surface "matte"
 Attribute "visibility" "trace" [1]
 Surface "mirror" "roughness" 1.0
 Color 0.8 1 1
 #ReverseOrientation # verify it's not sidedness
 #Sides 2 # verify it's not sidedness mark 2

 Polygon "P" [-5 5 1
 5 5 1
 5 -5 1
 -5 -5 1]
 
 Surface "matte"
 Translate 0 0 -1
# Opacity 0.8 0.8 0.8
 Opacity 0.1 0.1 0.1
 Color 1 0 1
 Sphere 2 -2 2 360

 Opacity 1 1 1
 Color 1 1 0
 Rotate -90 0 1 0 
 Translate 0 -5 -8
 Polygon "P" [-5 5 1
 5 5 1
 5 -5 1
 -5 -5 1] "st" [ 0 0   1 0   1 1   0 1 ]

 WorldEnd