Invention Grant
US09076265B2 System and method for performing depth testing at top and bottom of graphics pipeline
有权
在图形管线顶部和底部进行深度测试的系统和方法
- Patent Title: System and method for performing depth testing at top and bottom of graphics pipeline
- Patent Title (中): 在图形管线顶部和底部进行深度测试的系统和方法
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Application No.: US11454267Application Date: 2006-06-16
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Publication No.: US09076265B2Publication Date: 2015-07-07
- Inventor: Mark Fowler , Chris Brennan
- Applicant: Mark Fowler , Chris Brennan
- Applicant Address: CA Markham, Ontario
- Assignee: ATI TECHNOLOGIES ULC
- Current Assignee: ATI TECHNOLOGIES ULC
- Current Assignee Address: CA Markham, Ontario
- Agency: Volpe and Koenig, P.C.
- Main IPC: G06T15/40
- IPC: G06T15/40

Abstract:
Embodiments of a system and method including graphics processing of a pixel sample are described. According to an embodiment, a first depth test processes a value, such as a z/stencil value, of a pixel sample and determines whether the value of the pixel sample satisfies the first depth test. If the value of the pixel sample satisfies the first depth test, the value of the pixel sample is not immediately written to storage, such as a Z-buffer. That is, if the value of the pixel sample satisfies the first depth test, the depth processing logic prevents or delays a write operation for the value of the pixel sample to storage at that time. A second depth test is performed on the value of the pixel sample if the value of the pixel sample satisfied the first depth test. If the value of the pixel sample satisfies the second depth test, the value of the pixel sample is then written to storage.
Public/Granted literature
- US20070291030A1 System and method for performing depth testing at top and bottom of graphics pipeline Public/Granted day:2007-12-20
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