Three-dimensional graphic display apparatus with improved high-s

Details Three-dimensional graphic display apparatus with improved high-s Three-dimensional graphic display apparatus with improved high-s

1996-02-14

1999-11-09

Jankus, Almis R.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

G06T 1500

Patent

active

059823763

ABSTRACT:
A novel graphic display apparatus in which the pixel information for a multiplicity of layers arranged according to Z value including the color, the proportion in which the figure occupies the pixel and the Z value are held for each layer in a pixel memory. The Z value is compared between the pixel information of a newly-plotted figure and the multi-tiered pixel information held in the pixel information memory. In order to reduce the amount of memory space required, the pixel information stored in the bottom layer of the pixel memory is a combination of information synthesized from the color information having the Z value of the bottom layer and from at least one other layer having a Z value lower than the Z value associated with said bottom layer. In the case where the Z values are substantially equal to each other, the mask values included in each pixel information are summed and the pixel information to be written in the pixel information memory is determined by a pixel information computing section.

REFERENCES:
A. Schilling, et al. "A New Simple and Efficient Antialiasing with Subpixel Masks", Computer Graphics, vol. 25, No. 4, Jul. 1991.
Foley et al. "Computer Graphics Principles & Practice" pp. 692-695, 1990.

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