Method for display rendering by determining the coverage of pixe

Details Method for display rendering by determining the coverage of pixe Method for display rendering by determining the coverage of pixe

1993-06-03

1994-09-13

Bayerl, Raymond J.

395135, 395143, G06F 1572, G06F 1562

Patent

active

053476182

ABSTRACT:
A method for determining the coverage of a pixel, which includes determining a function of the distance from the currently sampled point to each edge of a polygon and then adding a predetermined value to the value of the function. This value is then clamped according to a function which provides an output of a predetermined value if the input to the function is not within a predetermined range and otherwise provides the value of the input if the input is within the predetermined range. The coverage of the pixel by the polygon is computed by multiplying the clamped functions. Blending the parameter values is performed if the value of the coverage falls within a predetermined range; otherwise, no blending occurs.

REFERENCES:
patent: 4704605 (1987-11-01), Edelson
patent: 4873515 (1989-10-01), Dickson et al.
patent: 4908780 (1990-03-01), Priem et al.
patent: 4918626 (1990-04-01), Watkins et al.
patent: 5123085 (1992-06-01), Wells et al.
patent: 5179641 (1993-01-01), Comins et al.
patent: 5243695 (1993-09-01), Russell et al.

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