Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2008-05-06
2008-05-06
Tung, Kee M. (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
Reexamination Certificate
active
07369126
ABSTRACT:
The present invention provides for accelerating the generation of graphical images that include shadow effects by, for example, reducing the amount of data transmitted and/or stored necessary to render graphics based on stencil shadow volumes. In one embodiment, an exemplary apparatus is configured to render shadows using stencil shadow volumes. The apparatus includes a memory to store a degree of shadowing for each sample. A co-processor, which is coupled to the memory, is configured to generate an indicator that represents a common degree of shadowing associated with the subset of samples. In some cases, the apparatus includes a graphics processing unit (“GPU”), which is coupled to the co-processor, that is configured to render one or more shadows for a computer-generated image based on the indicator.
REFERENCES:
patent: 6016150 (2000-01-01), Lengyel et al.
patent: 2003/0112237 (2003-06-01), Corbetta
Cass Everitt and Mark Kilgard, Practical and Robust Stenciled Shadow Volumes for Hardware-Accelerated Rendering, http://developer.nvidia.com/attach/5627, Mar. 12, 2002.
Cooley Godward Kronish LLP
Nvidia Corporation
Richer Aaron M
Tung Kee M.
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