Patent ID: 11922555
Assignee: IMAGINATION TECHNOLOGIES LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method of identifying, in a graphics processing system in which a rendering space has been sub-divided into a plurality of tiles, primitives relevant to rendering a current tile of the plurality of tiles, each tile of the plurality of tiles forming part of at least two different tile groups of different sizes, the method comprising:
fetching a control stream for each tile group that the current tile forms part of, each control stream comprising none, one or more than one primitive block entry, each primitive block entry comprising (i) information identifying a corresponding primitive block comprising geometry data for one or more primitives, and (ii) bounding box information identifying a bounding box that encompasses the one or more primitives of the corresponding primitive block; and
analysing each primitive block entry of the fetched control streams to determine whether the corresponding primitive block is relevant to rendering the current tile by:
determining from the bounding box information whether the current tile falls within the bounding box, and
in response to determining that the current tile does not fall within the bounding box, determining that the corresponding primitive block is not relevant to rendering the current tile.