Interpolative Shading

Tags

computer-graphics

[see page 26, How] we spread an illumination value across a polygon. This involves:

• determining the intensity of each polygon.
• determining which pixels the polygon takes up in screen space.
• determining the intensity of each pixel in the polygon.

Colors are generally multiplied by the intensity to determine the final color of a pixel.

Interpolative shading can [see page 29, fool the eye] into seeing polygons as a smooth surface. The normals at the surface of each pixel blend together to make the boundary edges (essentially) invisible.