The intensity of specularly reflected light from an illuminated object is
represented by an algebraic expression including multiplication, addition,
and subtraction operations. The algebraic expression is used in an
illumination model, where the illumination model describes the color and
intensity of light reflected by the illuminated object. Light reflected by
the illuminated object is composed of ambient, diffuse, and specular
components. The specular terms used in the illumination model are
equivalent in functional form to the diffuse terms, thereby accelerating
the computation of color vector c defined by the illumination model. A
modified algebraic expression representing specularly reflected light from
an illuminated object is defined and used in the illumination model,
thereby accelerating computation of color vector c.
