Parallel duplicate primitive vertex detection and batching
US8558842B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2010 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | May 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention sets forth a technique for detecting duplicate vertex indices in parallel and batching indices defining multiple primitives for parallel primitive processing. A lookback cache breaks the dependent loop for the miss processing. Because each index is compared to all previous indices (duplicate or not), each index is not dependent on whether the previous indices have hit or missed. This allows the comparison operation that detects the duplicate vertex indices to be fully pipelined. The duplicate vertex indices are removed to reduce the number of indices that define the primitives in the batch. Multiple, independent rasterizer units operate concurrently on the different batches of graphics primitives to render multiple primitives per system clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.