Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2008-07-15
2008-07-15
Nguyen, Kimbinh T (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
C345S418000, C345S419000, C345S422000, C345S423000, C345S620000, C345S622000
Reexamination Certificate
active
07400325
ABSTRACT:
The VPC unit and setup unit of a graphics processing subsystem perform culling operations. The VPC unit performs culling operations on geometric primitives falling within a specific criteria, such as having a property within of a numerical range limit. This limit reduces the complexity of the VPC unit. As increasing rendering complexity typically produces a large number of small primitives, the VPC unit culls many primitives despite its limitations. The VPC unit also includes a cache for storing previously processed vertices in their transformed form, along with previously computed culling information. This increases the VPC unit throughput by reducing the number of memory accesses and culling operations to be performed. The setup unit performs culling operations on any general primitive that cannot be culled by the VPC unit. By performing a first series of culling operations in the VPC unit, the processing burden on the setup unit is decreased.
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Bowen Andrew D.
Gimby Robert W.
Goodman Christopher J.
Moreton Henry Packard
Ogletree Thomas M.
Nguyen Kimbinh T
Nvidia Corporation
Townsend and Townsend / and Crew LLP
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