The RenderMan Interface - Paul Bourke

Shading Attribute Type Default Description
Color color color ”rgb” (1,1,1) The reflective color of the
object.
Opacity color color ”rgb” (1,1,1) The opacity of the object.
Texture coordinates 8 floats (0,0)(1,0),(0,1),(1,1) The texture coordinates (s, t)
at the 4 corners of a parametric
primitive.
Light Sources
shader
list
– A list of light source shaders
that illuminate subsequent
primitives.
Area Light Source shader – An area light source which is
being defined.
Surface shader default surface* A shader controlling the
surface shading model.
Atmosphere shader – A volume shader that specifies
how the color of light is
changed as it travels from a
visible surface to the eye.
Interior Volume shader –
Exterior Volume shader – A volume shader that specifies
how the color of light is
changed as it traverses a volume
in space.
Effective Shading Rate float 1 Minimum rate of surface
shading.
Shading Interpolation token ”constant” How the results of shading
samples are interpolated.
Matte Surface Flag boolean false A flag indicating the surfaces
of the subsequent primitives
are opaque to the rendering
program, but transparent on
output.
* Implementation-dependent
Table 4.6: Shading Attributes
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