gistfile1.txt

FrameBegin 1
        Format 512 512 1
        PixelSamples 2 2
        PixelFilter "box" 1 1
        ShadingRate 0.5
        ShadingInterpolation "smooth"
        Display "ao.tiff" "file" "rgb"  # render image to buffer
        Projection "perspective" "fov" 22
        Translate 0 -0.5 8
        Rotate -40 1 0 0
        Rotate -20 0 1 0

        WorldBegin
            Attribute "visibility" "trace" [1]
            Attribute "visibility" "transmission" "opaque"
            Attribute "cull" "hidden" 0
            Attribute "cull" "backfacing" 0
                # Attribute "trace" "bias" 0.005

                Surface "ambocc" "float samples" 128

                # White ground plane
                AttributeBegin
                        Color [1 1 1]
                        Polygon "P" [ -5 0 5  5 0 5  5 0 -5  -5 0 -5 ]
                AttributeEnd

                # sphere
                AttributeBegin
                        Color [1 1 1]
                        Translate -0.7 0.5 0
                        Sphere 0.5 -0.5 0.5 360
                AttributeEnd

                # box
                AttributeBegin
                        Translate 0.3 0.01 0
                        Rotate -30 0 1 0
                        Color [1 1 1]
                        Polygon "P" [ 0 0 0  0 0 1  0 1 1  0 1 0 ] # left side
                        Polygon "P" [ 1 1 0  1 1 1  1 0 1  1 0 0 ] # right side
                        Color [1 1 1]
                        Polygon "P" [ 0 1 0  1 1 0  1 0 0  0 0 0 ] # front side
                        Polygon "P" [ 0 0 1  1 0 1  1 1 1  0 1 1 ] # back side
                        Color [ 1 1 1]
                        Polygon "P" [ 0 1 1  1 1 1  1 1 0  0 1 0 ] # top
                AttributeEnd
        WorldEnd
FrameEnd