http://www.w3.org/ns/prov#value | - In the disclosed embodiment, the output of the texture unit is a color or opacity that is blended with the object's primitive color/opacity (e.g., as developed by transform and lighting pipeline and the rasterizer in a conventional fashion based on the same or different lighting equation using a conventional shading algorithm such as Gouraud or Phong shading) to provide a modified color/opacity va
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