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US 6,556,203 B1Granted
Tile-based digital differential analyzer rasterization
AssigneeIntel Corporation
InventorScott R. Nelson
Life of this patent
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Abstract
A method, apparatus, and system are described for rasterizing a triangle. Pixel parameter values are interpolated by adding or subtracting a vertical delta or by adding or subtracting a horizontal delta within a 4×4 tile of 16 pixels.
Claims3
A system comprising:
- a raster;
- an edge interpolator coupled to the raster to scan the scan lines of the raster;
- a left first-in-first-out (FIFO) unit coupled to the edge interpolator to store leftmost values of a triangle scanned by the edge interpolator;
- a right FIFO unit coupled to the edge interpolator to store rightmost values of the triangle scanned by the edge interpolator;
- a tile generator coupled to the left FIFO unit and to the right FIFO unit to determine the leftmost tile from the leftmost values and the rightmost tile from the rightmost values;
- and
- a sample generator to determine valid pixel samples on the raster based on the leftmost values and the rightmost values.
4 more elements
Dependencies are inferred from the claim text.