Computer graphics processing and selective visual display system – Computer graphics processing – Graphic manipulation
Reexamination Certificate
2007-10-23
2007-10-23
Tung, Kee M. (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Graphic manipulation
C345S420000, C345S421000, C345S428000, C345S581000, C345S628000, C382S199000, C382S202000
Reexamination Certificate
active
10943488
ABSTRACT:
A method for rendering a visible portion of an image that includes a plurality of graphics primitives. The size of the graphics primitives may be large and require the use of floating point numbers to represent the vertices. When the graphics primitives have a common vertex that is visible, the edge functions for the primitive are computed so as to avoid the common vertex becoming different for the different primitives. If the other vertices of the graphics primitives lie outside a bounding rectangle, then a vertex is formed at the intersection of the bounding rectangle and the graphics primitive. Fixed point numbers for the common vertex and other vertices including intersection vertices are then used to compute edge functions of the primitive and the primitive is rendered using the edge functions. If the common vertex is not visible, then floating point numbers are used to compute the edge functions.
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Caschera Antonio A
Thomas Kayden Horstemeyer & Risley
Tung Kee M.
Via Technologies Inc.
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