Modeling Specular Highlights Using Bézier Triangles
Russ T. Brown · 1999
Rendering specular highlights typically requires interpolation and renormalization of a unit surface normal vector at each pixel of a three-dimensional graphics image. This report discusses a technique for modeling specular highlights using Bezier triangles. This approach avoids computation by identifying those polygons for which it is not necessary to calculate a specular highlight. The use of Bezier triangles to model specular highlights suggests a general technique for modeling, clipping and interpolation of shading functions.