Method for displaying edging or decaling of an object in a graphics display
US5416893A · kind A · utility
11Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1993 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Oct 26, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/405
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for implementing polygon edging of objects in a graphics display. In a first pass, the system renders the polygon fill with z-buffer comparison and replace enabled, however, for each pixel written to the display frame buffer and z-buffer, an edging plane bit for the pixel is set. A second pass renders the polygon edges with z-buffer comparison and z-buffer replace enabled and uses the edging plane bit as a virgin bit. A third pass re-renders the polygon fill, but only resets the edging plane bit for each pixel. The system may also use a virgin bit available in the z-buffer as the edging plane bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.