Generation and storage of compressed Z-planes in graphics processing
US12236498B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2021 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Apr 7, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2200/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Generation and storage of compressed z-planes in graphics processing is described. An example of a processor includes a rasterizer to generate a fragment of pixel data including blocks of pixel data; a depth pipeline to receive the fragment, the pipeline including a first and second depth test hardware, the first depth test hardware to perform a coarse depth test including determining minimum and maximum depths for each block; and a depth buffer, wherein the processor is to determine whether the fragment meets requirements that the fragment fully covers a tile of pixel data and passes a first depth test, and that each of the minimum and maximum depths of the fragment has a same sign and exponent, and, upon determining that the fragment meets the requirements, to generate a compressed depth plane utilizing the first depth test and update the depth buffer with the compressed depth plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.