Quotient remainder coverage system and method

Details Quotient remainder coverage system and method Quotient remainder coverage system and method

2007-08-15

2011-10-18

Nguyen, Hau (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S607000, C345S608000, C345S609000, C345S610000

Reexamination Certificate

active

08040357

ABSTRACT:
Embodiments of the present invention pixel processing system and method provide convenient and efficient processing of pixel information. In one embodiment, quotient-remainder information associated with barycentric coordinate information indicating the location of a pixel is received. In one exemplary implementation quotient-remainder information is associated with barycentric coordinate information through the relationship c divided by dcdx, where c is the barycentric coordinate for a particular edge and dcdx is the derivative of the barycentric coordinate in the screen horizontal direction. The relationship of a pixel with respect to a primitive edge is determined based upon the quotient-remainder information. For example, a positive quotient can indicate a pixel is inside a triangle and a negative quotient can indicate a pixel is outside a triangle. Pixel processing such as shading is performed in accordance with the relationship of the pixel to the primitive.

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“The IEEE standard for floating point arithmetic;” at URL= http://www.psc.edu/general/software/packages/ieee/ieee.php; printed May 18, 2011; 2 pages.
Application As Filed; Filing Date of Aug. 7, 2007; U.S. Appl. No. 11/890,839.
Application As Filed; Filing Date of Dec. 20, 2006; U.S. Appl. No. 11/643,545.

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