Compression and decompression of indices in a graphics pipeline
US10600142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2017 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Dec 5, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A compute unit accesses a chunk of bits that represent indices of vertices of a graphics primitive. The compute unit sets values of a first bit to indicate whether the chunk is monotonic or ordinary, second bits to define an offset that is determined based on values of indices in the chunk, and sets of third bits that determine values of the indices in the chunk based on the offset defined by the second bits. The compute unit writes a compressed chunk represented by the first bit, the second bits, and the sets of third bits to a memory. The compressed chunk is decompressed and the decompressed indices are written to an index buffer. In some embodiments, the indices are decompressed based on metadata that includes offsets that are determined based on values of the indices and bitfields that indicate characteristics of the indices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.