System and method for implementing shadows using...

Details System and method for implementing shadows using... System and method for implementing shadows using...

2006-06-20

2006-06-20

Nguyen, Kimbinh T. (Department: 2671)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C345S582000

Reexamination Certificate

active

07064755

ABSTRACT:
The present invention provides an improved system and method for rendering shadows in a computer graphics system. Textures representing the area of influence resulting from a combination of light sources and shadow casters are pre-computed. Scenes are then rendered using the pre-computed textures. A first step entails generating sets of directions and associated pre-computed textures for each light source and shadow caster pair in a simulation frame. Next, a first scene in the simulation is rendered. During this step one or more of the pre-computed textures are used to darken the area of influence or shadow portion of the scene.

REFERENCES:
patent: 5870098 (1999-02-01), Gardiner
patent: 6182127 (2001-01-01), Cronin, III et al.
patent: 6195099 (2001-02-01), Gardiner
patent: 6323870 (2001-11-01), Newhall, Jr.
patent: 6362822 (2002-03-01), Randel

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