Patent ID: 6421053
Filing Date: 2002-07-16
Classification: G06T

Abstract:
A method of rendering a primitive, comprising:dividing a primitive into groups of spans each including at least two subgroups of spans; rendering each group of spans along the spans from an entry in a direction away from a long edge of the primitive, including alternately rendering blocks of pixels from different subgroups of spans while rendering along the spans by the steps of: (a) rendering a block of pixels within a subgroup of spans; (b) rendering a block of pixels adjacent a block of pixels last rendered and within a same subgroup of spans as the block of pixels last rendered; (c) rendering a block of pixels within a different subgroup of spans adjacent the block of pixels rendered in step (b); (d) repeating steps (b) and (c) until all blocks of pixels within a current group of spans in a current rendering direction have been rendered; and rendering each group of spans along the spans from the entry in a direction toward the long edge of the primitive.