Zero-bandwidth clears
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United States of America Patent
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Dec 11, 2012
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app pub date -
Dec 19, 2008
filing date -
Dec 19, 2008
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Abstract
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.
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