SYSTEM AND METHOD FOR FRAME BUFFER DECOMPRESSION AND/OR COMPRESSION

摘要

A system and method for decompressing compressed data (e.g., in a frame buffer) and optionally recompressing the data. The method includes determining a portion of an image to be accessed from a memory and sending a conditional read corresponding to the portion of the image. In response to the conditional read, an indicator operable to indicate that the portion of the image is uncompressed may be received. If the portion of the image is compressed, in response to the conditional read, compressed data corresponding to the portion of the image is received. In response to receiving the compressed data, the compressed data is uncompressed into uncompressed data. The uncompressed data may then be written to the memory corresponding to the portion of the image. The uncompressed data may then be in-place compressed for or during subsequent processing.

主权项

1. A method of uncompressing data, said method comprising:
determining a portion of an image to be accessed from a memory; sending a conditional read corresponding to said portion of said image; in response to said conditional read, receiving an indicator operable to indicate that said portion of said image is uncompressed; in response to said conditional read, receiving compressed data if said portion of said image is compressed; in response to receiving said compressed data, uncompressing said compressed data into uncompressed data; and writing said uncompressed data to said memory corresponding to said portion of said image.