Computer graphics processing and selective visual display system – Computer graphic processing system – Interface
Patent
1995-08-02
1998-11-24
Bayerl, Raymond J.
Computer graphics processing and selective visual display system
Computer graphic processing system
Interface
345525, G06F 1300
Patent
active
058414479
ABSTRACT:
A system and method improves pixel update performance in computer graphics systems. Pixel sample coverage masks and data record memory locations are assigned to each pixel. The data record memory locations store pixel sample data for one or more pixel samples. A coverage mask is associated with each data record and contains mask bits which identify the pixel samples that are assigned the data contained in the data record memory location. In another embodiment, the pixels are also assigned versions which are compared with a current version. In response to the version comparison, predefined alternate pixel data or pixel data stored in a frame buffer is blended with new pixel data. The blended pixel data is written to the frame buffer from which it is retrieved and displayed by a display device. In another embodiment, pixel data memory is dynamically allocated to reduce the dedicated memory requirements while still providing high quality images.
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Akeley, Kurt, "RealityEngine Graphics", Computer Graphics Proceedings, Annual Conference Series, 1993 ACM-0-89791-601-8/93/008/0109.
Bayerl Raymond J.
Evans & Sutherland Computer Corporation
Nguyen Cao H.
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