| 摘要 |
<p>A method and apparatus for clearing a Z-buffer (2) in a raster scanned, computer controlled video display system having a frame buffer (15) and a Z-buffer (2) is disclosed. The method includes the step of writing a plurality of bits into pixel locatons of the frame buffer (15), which pixel locations will be cleared in the Z-buffer (2) and on the screen of the video display. Those plurality of bits invalidating the Z values in the Z-buffer (2) corresponding to those pixels locations.</p> |
