Option "trace" "int maxdepth" [2]
#Option "trace" "int maxdepth" [1]

Display "TEST_gather.tif" "framebuffer" "rgb"
Display "+TEST_gather.tif" "file" "rgb"
Format 427 240 1
Projection "perspective" "fov" 40
ShadingRate 1

LightSource "distantlight" 1 "intensity" 2.5 
            "from" [0 0 0] "to" [0 0 1]
LightSource "distantlight" 2 "intensity" 4.0
			"from" [0 0 -20] "to" [0 0 0] "lightcolor" [.6 0.1 0.1]
Translate  0 0 5
Rotate -20 1 0 0
Rotate 0   0 1 0
Scale 1 1 -1

WorldBegin
    ReverseOrientation
    Attribute "visibility" "trace" [1]
    
    TransformBegin
        Attribute "identifier" "name" ["sphere"]
        Translate 0 1 0
        Surface "TEST_simple_trace"
        Sphere 1 -1 1 360
    TransformEnd
    TransformBegin
        Attribute "identifier" "name" ["polygon"]
        Translate 0 0 1.5
        Scale 4 1 4
        Surface "TEST_gather_mirror" "samplecone" 0.01 "samples" 32 "noisefreq" 5
        Polygon "P" [-0.5 0 -0.5   0.5 0 -0.5  
                      0.5 0 0.5  -0.5 0 0.5]
                "st" [0 0  1 0  1 1  0 1]
    TransformEnd
    TransformBegin
        Attribute "identifier" "name" ["big_sphere"]
        Surface "plastic"
        Color .5 .5 .5 
        Sphere 100 -100 100 360
    TransformEnd
WorldEnd