G - Physics – 09 – G
Patent
G - Physics
09
G
375/12
G09G 5/36 (2006.01) G06T 11/20 (2006.01) G06T 15/10 (2006.01)
Patent
CA 1317042
ABSTRACT Apparatus and method for using an index register which Gycles modulo 4 for loading registers which contain coordinates of four vertices of quadrilateral objects, including degenerate quadrilateral objects, namely a point, a line and a triangle, which are to be displayed by a graphics display subsystem. In this manner, a software command need only define the minimum number of X,Y coordinate pairs to define the object, i.e., one coordinate pair for a point, two coordinate pairs for a line, three coordinate pairs for a triangle and two coordinate pairs for a rectangle (by defining opposite corners). Additionally, by using an index register according to the present invention, objects can be efficiently replicated.
612530
Malachowsky Chris
Priem Curtis
Riches Mckenzie & Herbert Llp
Sun Microsystems Inc.
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