Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
2005-09-13
2005-09-13
Bella, Matthew C. (Department: 2676)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
C345S422000, C345S530000, C345S536000
Reexamination Certificate
active
06943791
ABSTRACT:
A system and method are disclosed for utilizing a Z slope test to select polygons that may be candidates for multiple storage methods. The method may calculate the absolute Z slope from vertex data and compare the calculated value with a specified threshold value. In some embodiments, for polygons that have an absolute Z slope less than the threshold value, parameter values may be rendered for only one sample position of multiple neighboring sample positions. The parameter values rendered for the one sample position may then be stored in multiple memory locations that correspond to the multiple neighboring sample positions. In some embodiments, storing parameter values in multiple memory locations may be achieved in a single write transaction. In some embodiments, utilization of the Z slope test method may be subject to user input and in other embodiments may be a dynamic decision controlled by the graphics system.
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patent: 5706415 (1998-01-01), Kelley et al.
patent: 6160557 (2000-12-01), Narayanaswami
patent: 6369828 (2002-04-01), Lewis
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Deering Michael F.
Lavelle Michael G.
Pascual Mark E.
Ramani Nandini
Chen Po-Wei (Dennis)
Hood Jeffrey C.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
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