发明授权
- 专利标题: Zero-bandwidth clears
- 专利标题(中): 零带宽清除
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申请号: US12340496申请日: 2008-12-19
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公开(公告)号: US08330766B1公开(公告)日: 2012-12-11
- 发明人: David Kirk McAllister , Steven E. Molnar , Jerome F. Duluk, Jr. , Emmett M. Kilgariff , Patrick R. Brown , Christian Johannes Amsinck , James Michael O'Connor , John Matthew Burgess , Gregory Alan Muthler , James Robertson
- 申请人: David Kirk McAllister , Steven E. Molnar , Jerome F. Duluk, Jr. , Emmett M. Kilgariff , Patrick R. Brown , Christian Johannes Amsinck , James Michael O'Connor , John Matthew Burgess , Gregory Alan Muthler , James Robertson
- 申请人地址: US CA Santa Clara
- 专利权人: NVIDIA Corporation
- 当前专利权人: NVIDIA Corporation
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Patterson & Sheridan, LLP
- 主分类号: G09G5/36
- IPC分类号: G09G5/36 ; G06T15/40
摘要:
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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