PRIMITIVE BINNING METHOD FOR TILE-BASED RENDERING
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United States of America Patent
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Issued Date -
Feb 19, 2009
app pub date -
Aug 14, 2007
filing date -
Aug 14, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A primitive binning method includes detecting border tiles of a primitive defined by at least three vertexes. The detecting includes: defining a left edge and a right edge of the primitive compared to a direction of exploring tiles; calculating a slope sign for the left edge using an edge equation for the left edge; calculating a slope sign for the right edge using an edge equation for the right edge; and checking if a tile is crossed by one of the edges by evaluating an edge equation of a single corner of a tile. The corner is selected according to the one of the edges being a left or a right edge and according to the slope sign of the one of the edges.
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