Method for forward progress and programmable timeouts of tree traversal mechanisms in hardware
US11455768B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Dec 4, 2020 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Dec 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a ray tracer, to prevent any long-running query from hanging the graphics processing unit, a traversal coprocessor provides a preemption mechanism that will allow rays to stop processing or time out early. The example non-limiting implementations described herein provide such a preemption mechanism, including a forward progress guarantee, and additional programmable timeout options that can be time or cycle based. Those programmable options provide a means for quality of service timing guarantees for applications such as virtual reality (VR) that have strict timing requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.