| 摘要 |
The final viewable colour of each pixel (30b) to be displayed responsive to specular reflected illumination intensity from a polygon is determined by generating a data signal, setting a specular component (SL) of the present pixel illumination intensity for the associated colour, as the product of the intensity (30a-4) of a light source illuminating the polygon, a specular coefficient (30a-5) for that polygon, and a shading term proportional to the exponentiation (40) of the rendered Gouraud Shading Intensity (GSI) (30a-1) for each of a plurality of selected primary colours of a sequence of pixels to be displayed as defining that polygon, by S, a shininess exponent (s) (30a-6) specified for that polygon. <IMAGE> |
