A METHOD AND APPARATUS FOR PERFORMING POST-PROCESS ANTIALIASING OF POLYGON EDGES

摘要

It is determined that an edge of one of the plurality of polygons intersects a scan line in the texture mapped representation at an intersection point. The pixel within which this intersection point lies is determined (310). The color for this pixel is identified by pixel data stored as part of the texture mapped representation. A filter is performed using the texture mapped representation as an input texture map by: 1) determining a texture point in the input texture map that corresponds to the intersection point; 2) performing a filter on texels in the input texture map identified by that texture point to determine a corrected color for the pixel; and 3) altering the pixel data stored as part of the texture mapped representation for the pixel containing the intersection point to indicate the corrected color (320). The filter used in this method is either a linear filter, a bilinear filter, a quadratic filter, or a cubic filter. Moreover the step of performing the filter is performed using the same hardward used for performing the texture mapping of the texture mapped representation.