Method and apparatus for reading texture data from a cache

Details Method and apparatus for reading texture data from a cache Method and apparatus for reading texture data from a cache

2005-08-02

2005-08-02

Bella, Matthew C. (Department: 2676)

Computer graphics processing and selective visual display system

Computer graphics display memory system

Texture memory

C345S554000, C345S557000, C711S118000, C711S131000, C711S149000

Reexamination Certificate

active

06924812

ABSTRACT:
A texture data reading apparatus includes a cache memory including a plurality of read ports and a plurality of regions to store pixel texture data. An address comparator includes a plurality of input ports to receive incoming pixels, wherein the address comparator compares the memory addresses associated with the incoming pixels to determine which regions of cache memory are accessed. A cache lookup device accesses new texture data from the cache memory for the incoming pixels in the same clock cycle in response to the number of memory regions accessed being less than or equal to the number of cache memory read ports.

REFERENCES:
patent: 4905141 (1990-02-01), Brenza
patent: 6433789 (2002-08-01), Rosman
patent: 6744438 (2004-06-01), Baldwin

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