Texture map coverage optimization
US7773092B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Nov 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The current invention involves new systems and methods for increasing texture filtering performance based on pixel coverage. When half of the pixels in a 2×2 pixel quad are not covered, texel coordinates for the uncovered pixels are not output. Therefore, the texels for the uncovered pixels are not read or processed, allowing the texel filtering processing throughput to be used to produce filtered results for covered pixels. This optimization is particularly useful when anisotropic filtering is used since the number of texels needed to produce a filtered result for a pixel increases as the anisotropic ratio increases. Elimination of unnecessary texel processing for uncovered pixels may improve texture filtering performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.