Coincident graphics pixel scoreboard tracking system and method

摘要

Processing pixels in a graphics pipeline. Screen coincidence between a first pixel and a second pixel in a graphics pipeline is detected, wherein the first pixel has entered a downstream pipeline portion of the graphics pipeline but has not yet completed processing within the graphics pipeline. In response to detecting the coincidence, propagation of the second pixel to the downstream pipeline portion is stalled until the first pixel completes processing within the graphics pipeline. A data cache associated with the data fetch stage is invalidated in advance of a data fetch stage of the downstream pipeline portion obtaining data for the second pixel.