Appeal No. 2001-0529 Page 3
Application No. 08/846,600
A further understanding of the invention can be achieved by reading the following
claim.
1. A three dimensional graphics processor comprising:
a setup engine operably coupled to receive vertex parameters and
to generated [sic], therefrom, a plurality of derivatives and Bresenham
parameters, wherein at least one of the vertex parameters and the
plurality of derivatives are in floating point format;
an edgewalker circuit operably coupled to receive the plurality of
derivatives and to generate, therefrom, a plurality of spans, wherein x and
y starting points of the plurality of derivatives are of subpixel precision;
a texel address generator operably coupled to receive the plurality
of spans and to produce, therefrom, a set of texel addresses for a
particular point of one of the plurality of spans;
a texel fetch circuit operably coupled to receive the set of texel
addresses and to retrieve, based on the set of texel addresses, a set of
texels; and
a texel processor operably coupled to receive the set of texels and
to filter the set of texels to produce a filtered pixel.
Claim 19 stands rejected under 35 U.S.C. § 102(e) as anticipated by U.S. Patent
No. 5,831,637 ("Young"). Claims 1, 3-9, and 22 stand rejected under 35 U.S.C.
§ 103(a) as obvious over U.S. Patent No. 5,798,762 ("Sfarti") and Young.
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