Patent ID: 7180525
Filing Date: 2007-02-20
Classification: G09G

Abstract:
1. A graphics system comprising: a set of graphics accelerators, wherein each of the graphics accelerators comprises a rendering processor, an internal frame buffer, and a video data port; and a series of filtering units, wherein each of the filtering units couples to a video data port of a corresponding one of the graphics accelerators; wherein each of the graphics accelerators is configured to: (a) generate a stream of samples in response to received graphics primitives, (b) add a corresponding dither value to the color components of the samples to obtain dithered color components, (c) buffer the dithered color components in the internal frame buffer, and (d) forward truncated versions of the dithered color components to a corresponding filtering unit; and wherein for a specific pixel, each of the filtering units is configured to compute corresponding partial sums from the truncated versions of the dithered color components.