GRAPHICS PIPELINE AND ITS SYNCHRONIZING METHOD

摘要

PROBLEM TO BE SOLVED: To make the operation of a graphics pipe syncrhonizable with the operation of its command generator (main processor) even when the graphics pipeline processes commands included in a command stream from the graphics command generator at respectively different speeds. SOLUTION: A synchronization token including a programmable data message is inserted into the graphics command stream sent to the graphics pipeline. At a specific point nearby the end of the pipeline, the token is captured and a signal indicating that the token has arrived is generated. The graphics command generator judges which of possible tokens is captured by checking the captured token and can use information to synchronize a task with the graphics pipeline.