Culling objects from a 3-D graphics pipeline using hierarchical Z buffers
US10032308B2 · kind B2 · utility
2Cited by
2References
16Claims
0Family size
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Key dates
| Filing date | Jun 22, 2016 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Jun 22, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A shader in a graphics pipeline accesses an object that represents a portion of a model of a scene in object space and one or more far-z values that indicate a furthest distance of a previously rendered portion of one or more tiles from a viewpoint used to render the scene on a screen. The one or more tiles overlap a bounding box of the object in a plane of the screen. The shader culls the object from the graphics pipeline in response to the one or more far-z values being smaller than a near-z value that represents a closest distance of a portion of the object to the viewpoint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.