Invention Grant
US07659893B1 Method and apparatus to ensure consistency of depth values computed in different sections of a graphics processor
失效
确保在图形处理器的不同部分计算的深度值的一致性的方法和装置
- Patent Title: Method and apparatus to ensure consistency of depth values computed in different sections of a graphics processor
- Patent Title (中): 确保在图形处理器的不同部分计算的深度值的一致性的方法和装置
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Application No.: US11538002Application Date: 2006-10-02
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Publication No.: US07659893B1Publication Date: 2010-02-09
- Inventor: Stuart F. Oberman , Steven E. Molnar , Alexander L. Minkin , Peter B. Holmqvist
- Applicant: Stuart F. Oberman , Steven E. Molnar , Alexander L. Minkin , Peter B. Holmqvist
- Applicant Address: US CA Santa Clara
- Assignee: NVIDIA Corporation
- Current Assignee: NVIDIA Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Townsend and Townsend and Crew LLP
- Main IPC: G06T15/40
- IPC: G06T15/40
Abstract:
At least two different processing sections in a graphics processors compute Z coordinates for a sample location from a compressed Z representation. The processors are designed to ensure that Z coordinates computed in any unit in the processor are identical. In one embodiment, the respective arithmetic circuits included in each processing section that computes Z coordinates are “bit-identical,” meaning that, for any input planar Z representation and coordinates, the output Z coordinates produced by the circuits are identical to each other.
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