The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2019
Filed:
Sep. 08, 2016
Imagination Technologies Limited, Kings Langley, GB;
John W. Howson, St. Albans, GB;
Xile Yang, Rickmansworth, GB;
Andrea Sansottera, Sussex, GB;
Lorenzo Belli, Hemel Hempstead, GB;
Jonathan Redshaw, St. Albans, GB;
Imagination Technologies Limited, Kings Langley, GB;
Abstract
When untransformed display lists are used in a tile-based graphics processing system, the processing involved in deriving sub-primitives may need to be performed in both the geometry processing phase and the rasterization phase. To reduce the duplication of this processing, the control stream data for a tile includes sub-primitive indications to indicate which sub-primitives are to be used for rendering a tile. This allows the sub-primitives to be determined efficiently in the rasterization phase based on this information determined in the geometry processing phase. Furthermore, a hierarchical cache system may be used to store a hierarchy of graphics data items used for deriving sub-primitives. If graphics data items for deriving a sub-primitive are stored in the cache, the retrieval of these graphics data items from the cache in the rasterization phase can reduce the amount of processing performed to derive the sub-primitives.