Method for tracking depths in a scanline based raster image processor
US7425955B2 · kind B2 · utility
12Cited by
19References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Jul 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T11/40
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of rendering a scan line of a graphic object image in a scan line renderer for spans of pixels laying between consecutive x-ordered edges intersecting the scan line includes maintaining a set of depths present in the rendering of the scan line, with the set being maintained in depth order. For each span, the set contains at least those depths that are active in the span, and the set is subject to removal of at least one depth at a subsequent span on the scan line where the corresponding depth is no longer active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.