Patent ID: 7034827
Filing Date: 2006-04-25
Classification: G06T

Abstract:
1. A method for implementing bump mapping, comprising: generating a table of color values for a geometry of a polygon in view of a light source and a viewing direction of the polygon, the table of color values to be referenced by orientation-dependent color variables; determining vertex angle coordinates for a plurality of vertex vectors of the polygons, including a normal vector (N), a light source vector (L), and a halfway vector between the light source vector (H) and a viewing direction of the polygon (V); interpolating the vertex angle coordinates with vertex values of the vertices of the polygon to provide angle coordinates for each pixel in the polygon, the angle coordinates representing a direction of the vertex vector at the pixel; modifying the angle coordinates using a perturbation source to generate perturbed angle coordinates; converting the perturbed angle coordinates to one or more color variables; and assigning the pixel a color value from the table of color values referenced by the one or more color variables, wherein table of color variables includes a first color variable (u where L