Technical Reports

The ICICS/CS Reading Room


UBC CS TR-97-06 Summary

An Object-Oriented Graphics Kernel, April 1997 Gene Lee, 22 pages

A graphics kernel serves as interface between an application program and an underlying graphics subsystem. Developers interact with kernel primitives while the primitives interact with a graphics subsystem. Although the two forms of interaction closely relate, their optimal designs conflict. The former interaction prefers a process that closely follows the mental (or object-based) model of application development while the latter prefers a process that parses display-lists.

This papers describes RDI, an object-oriented graphics kernel that resolves the differences between the two interactions with one design. Developers explicitly assign intuitive relationships between primitives while an underlying process interprets the primitives in an orderly manner. The kernel's extensible design decouples the processes of modeling and rendering. Primitives dynamically communicate with graphics subsystems to express their purpose and functions. The discussion of the kernel's design entails its optimizations, its benefits toward simulation, and its application toward parallel rendering.


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