Patent ID: 7528839
Filing Date: 2009-05-05
Classification: G06T,G09G

Abstract:
1. A graphics processing subsystem adapted to render a set of primitives to a memory buffer, the subsystem comprising: a graphics pipeline adapted to process a rendering command defining a set of primitives, wherein the set of primitives includes more than one primitive, and wherein each one of the primitives in the set of primitives comprises a plurality of vertices; and a bounding area memory connected with the graphics pipeline and adapted to store a set of bounding area values defining a bounding area; wherein the graphics pipeline is adapted to determine bounding area values associated with each one of the primitives in the set of primitives so that each one of the primitives falls inside a bounding area defined by the bounding area values, to determine cumulative bounding area values by combining the bounding area values of each of the set of primitives into a cumulative bounding area, the cumulative bounding area consisting of a union of the bounding areas associated with each one of the primitives in the set of primitives, and to modify the set of bounding area values stored in the bounding area memory with the cumulative bounding area values prior to rendering the set of primitives, wherein at least one bounding area included in the cumulative bounding area does not intersect any of the other bounding areas included in the cumulative bounding area.