Patent
1991-05-22
1993-11-23
Shaw, Dale M.
395250, 395164, G06F 1572
Patent
active
052651991
ABSTRACT:
A method for accelerating the writing of data to a Z buffer including the steps of reading the Z value presently stored at a position in the Z buffer; writing a new Z value to the position in the Z buffer if the result of a last available comparison in a sequence of comparisons wrote a new Z value to a position in the Z buffer, writing the Z value read back to the position in the Z buffer if the result of a last available comparison in a sequence of comparisons wrote the Z value read back to a position in the Z buffer, and comparing the Z value read from the position of the Z buffer with the new Z value; and rewriting the correct value to the Z buffer if the comparison of the Z value read from the position of the Z buffer with the new Z value demonstrates that the value written was incorrect.
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Dinh D.
Shaw Dale M.
Silicon Graphics Inc.
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