Tile-based accumulative multi-layer alpha blending systems and methods
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United States of America Patent
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May 24, 2016
Grant Date -
Mar 12, 2015
app pub date -
Sep 9, 2013
filing date -
Sep 9, 2013
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Abstract
A system for blending includes a memory device, cache, cache controller, and a graphics processing device. The graphics processing device performs blending of a plurality of source images into a single destination image. The graphics processing device performs a method including, for each tile position in the plurality of source images, requesting tiles for the tile position form each source image, blending the tiles individually with a destination tile and overwriting the destination tile in the cache with the result of the blending after each individual blending. The destination tile may be written to memory after each source tile for the each tile position has been blended with the destination tile, such as in response to a cache controller determining that the destination tile is a least recently used (LRU) entry in the cache.
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