Non-flushing atomic operation in a burst mode transfer data...

Details Non-flushing atomic operation in a burst mode transfer data... Non-flushing atomic operation in a burst mode transfer data...

2005-10-18

2005-10-18

Tung, Kee M. (Department: 2671)

Computer graphics processing and selective visual display system

Computer graphics display memory system

Graphic display memory controller

C345S422000, C345S572000

Reexamination Certificate

active

06956578

ABSTRACT:
A z-unit for a three-dimensional graphics system is provided having a read buffer and a write buffer. The read buffer stores read requests and the write buffer stores write requests. The read and write requests correspond to atomic operations for z-buffer manipulations. Upon the receipt of a read request, the address of the read request is compared to each of the addresses of the write requests. If a match occurs then the read buffer is flushed until a first read request with the matched address occurs. The write buffer is then flushed and all the write requests within the write buffer is serviced. The read buffer is again flushed until all the read requests within the read buffer is serviced.

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