Multi-pass clipping in a geometry accelerator

Details Multi-pass clipping in a geometry accelerator Multi-pass clipping in a geometry accelerator

1997-05-30

1999-03-02

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

G06F 1500

Patent

active

058777733

ABSTRACT:
A system and method for reducing an amount of memory that is needed to perform view clipping and model clipping of an input primitive in a geometry accelerator of a computer graphics system. The method includes view clipping the input graphics primitive with each view clipping boundary to determine a view-clipped geometry, storing view-clipped vertex data defining the view clipped geometry in memory, model clipping a view-clipped triangle forming the view-clipped geometry with each user defined model clipping plane to determine a model-clipped geometry, and storing model-clipped vertex data defining the model-clipped geometry in the memory in the memory locations previously occupied by said view-clipped vertex data. The method is repeated until each view-clipped triangle forming the view-clipped geometry has been model-clipped.

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