Method and system for providing implicit edge antialiasing
US6285348A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1999 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Apr 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/503
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for providing antialiasing of a graphical image on a display from data describing at least one object is disclosed. The display includes a plurality of pixels. The method and system include providing a plurality of fragments for the at least one object. A portion of the plurality of fragments intersects a pixel of the plurality of pixels. Each of the plurality of fragments includes a depth value, a slope of the depth value, and an indication of a portion of a corresponding pixel that is intersected. The method and system include calculating a plurality of subpixel depth values for a fragment of the plurality of fragments. The plurality of subpixel depth values is calculated using the depth value and the slope of the depth value of the fragment. The method and system include determining whether to store a portion of the fragment based on the plurality of subpixel depth values for the fragment and the indication of the extent the corresponding pixel is intersected by the fragment. The method and system also include storing the portion of the fragment if it has been determined that the portion of the fragment is to be stored. The method and system also include repe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.