Perspective correction computation optimization
US7324113B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2005 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Jan 28, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/393
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of optimizing perspective correction computations to be executed in a programmable fragment shader, identifying a sequence of program instructions; determining whether the sequence of program instructions can be optimized based on the status of the bit; sourcing one or more interpolated texture map coordinates to thereby disable the perspective correction computation comprising division by (1/w); and enabling the optimized execution of one of a plurality of perspective computation functions by a sought operation in a shader unit without division of the interpolated texture maps coordinates by (1/w). The optimized function includes able mapping, projective mapping, normalization, or scaling invariant operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.