Patent · US Active

Clipping of graphics primitives

US9530241B2 · kind B2 · utility

4Cited by

5References

10Claims

0Family size

Assignee

Arm Limited · GB

Inventors

Andreas Due Engh-Halstvedt · Trondheim, NO
Frode Heggelund · Trondheim, NO
Jørn Nystad · Trondheim, NO

Key dates

Filing date	Nov 7, 2014
Grant date	Dec 27, 2016
Priority date	—
Expiry date	Feb 19, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06T2210/52
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Techniques for performing clipping of graphics primitives 60 with respect to a clipping boundary 65 are described. The clipping step 10 may be performed separately for each tile of a graphics frame to be rendered, after a primitive list for the tile has been read from a primitive memory 38. Clipping may be performed only for larger primitives whose size exceeds a given threshold. Clipping of a primitive 60 to the clipping boundary 65 may be performed inexactly so that only a single clipped primitive is generated which may extend beyond the clipping boundary. A clipped primitive generated by clipping may be used for a depth function calculation of a primitive setup operation and not for an edge determination.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.