Tiling a primitive in a graphics processing system by edge-specific testing of a subset of tiles in a rendering space

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United States of America Patent

PATENT NO 11790480
APP PUB NO 20220148125A1
SERIAL NO

17587730

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Abstract

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In tile-based graphics processing systems, a tiling unit determines which tiles of a rendering space a primitive is in, such that the primitives in a tile can be rendered. Rather than performing tiling calculations for each tile in a bounding box for a primitive, tiling tests can be performed for a subset of the tiles. Then the results of the tiling tests for the subset of tiles can be used to determine whether the primitive is in other tiles which are located within a region bounded by two or more of the tiles of the subset. In this way the tiling process can be implemented without performing tiling calculations for all of the tiles in the bounding box for a primitive. Reducing the number of tiling calculations can help to improve the efficiency of the graphics processing system (in terms of speed and power consumption) for rendering a primitive.

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Patent Owner(s)

Patent OwnerAddress
IMAGINATION TECHNOLOGIES LIMITEDKINGS LANGLEY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yang, Xile Rickmansworth, GB 93 379

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