System, apparatus and method for subpixel shifting of sample positions to anti-alias computer-generated images
US7369140B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2005 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Mar 24, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2200/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system, apparatus, and method are disclosed for modifying positions of sample positions for selectably oversampling pixels to anti-alias non-geometric portions of computer-generated images, such as texture, at least in part, by translating (e.g., shifting) shading sample positions relative to a frame of reference in which there is no relative motion between the geometries and the coverage sample positions. In one embodiment, an exemplary method determines whether a coverage sample position is covered by a geometric primitive. The method includes translating a shading sample position from an original shading sample position to the coverage sample position. This generally occurs if the geometry covers the coverage sample position to form a covered coverage sample position. Further, the method samples a shading value at the covered coverage sample positions for the pixel portion to anti-alias, for example, texture to reduce level of detail (“LOD”) artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.