Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2006-09-12
2006-09-12
Chauhan, Ulka (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
Reexamination Certificate
active
07106326
ABSTRACT:
A graphical processing system comprising a computational unit and a shadow processing unit coupled to the computational unit through a communication bus. The computational unit is configured to transfer coordinates C1of a point P with respect to a first space to the shadow processing unit. In response to receiving the coordinates C1, the shadow processing unit is configured to: (a) transform the coordinate C1to determine map coordinates s and t and a depth value Dpfor the point P, (b) access a neighborhood of depth values from a memory using the map coordinates s and t, (c) compare the depth value DPto the depth values of the neighborhood, (d) filter binary results of the comparisons to determine a shadow fraction, and (e) transfer the shadow fraction to the computational unit through the communication bus.
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Deering Michael F.
Lavelle Michael G.
Rice Daniel S.
Twilleager Douglas C.
Brightwell Mark K.
Chauhan Ulka
Hood Jeffrey C.
Meyertons Hood Kivlin Kowert & Boetzel, P.C.
Prendergast Roberta
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