Front to back compositing
US9262841B2 · kind B2 · utility
4Cited by
3References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2013 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Mar 6, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/62
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, pixels that cannot change their color due to the alpha blend mode and the color already stored in a render target are detected. For example, if destination alpha blending is used and a target pixel has an alpha value of 1.0, it will not change color regardless of the computed color of subsequently composited objects. Both computing the object colors and accessing the frame buffer can be avoided when such a case is detected. This may save computations and bandwidth in some embodiments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.