| 摘要 |
<p>Apparatus for generating an image of objects in a three dimensional space for display on a two dimensional regular pixel array includes means (OFGN, SPGN) for anti-alias filtering which causes multiple rendition of the image with each rendition displaced by a sub-pixel offset (Nx,Ny) with respect to the previous rendition. Image primitives are rendered by a scan line algorithm using a linked active polygon list (APL) and a deleted polygon list (DPL) to enable vertical offsets to be effected. The deleted polygon list stores primitives which would not be effective for a given line but for the offset to enable anti-alias filtering. These polygons would not normally be available for processing when using the scan line algorithm. Economical hardware (600) is provided for horizontal edge correction of parameters such as depth (z) and texture coordinates (u,v). <IMAGE></p> |
