Zero-bandwidth clears

A system and method for performing zero-bandwidth-clears reduces external memory accesses by a graphics processor when performing clears and subsequent read operations. A set of clear values is stored in the graphics processor. Each region of a color or z buffer may be configured using a zero-bandwi...

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Bibliographische Detailangaben
Hauptverfasser: McAllister, David Kirk, Molnar, Steven E, Duluk, Jr, Jerome F, Kilgariff, Emmett M, Brown, Patrick R, Amsinck, Christian Johannes, O'Connor, James Michael, Burgess, John Matthew, Muthler, Gregory Alan, Robertson, James
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A system and method for performing zero-bandwidth-clears reduces external memory accesses by a graphics processor when performing clears and subsequent read operations. A set of clear values is stored in the graphics processor. Each region of a color or z buffer may be configured using a zero-bandwidth-clear command to reference a clear value without writing the external memory. The clear value is provided to a requestor without accessing the external memory when a read access is performed.