Accession Number : ADA296399

Title :   Parallel Rendering.

Descriptive Note : Contractor rept.,

Corporate Author : INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA

Personal Author(s) : Crockett, Thomas W.

PDF Url : ADA296399

Report Date : APR 1995

Pagination or Media Count : 51

Abstract : In computer graphics, rendering is the process by which an abstract description of a scene is converted to an image. When the scene is complex, or when high-quality images or high frame rates are required, the rendering process becomes computationally demanding. To provide the necessary levels of performance, parallel computing techniques must be brought to bear. Although parallelism has been exploited in computer graphics since the early days of the field, its initial use was primarily in specialized applications. The VLSI revolution of the late 1970's and the advent of scalable parallel computers during the late 1980's changed this situation. Today, parallel hardware is routinely used in graphics workstations, and numerous software-based rendering systems have been developed for general-purpose parallel architectures. This article provides a broad introduction to the subject of parallel rendering, encompassing both hardware and software systems. The focus is on the underlying concepts and the issues which arise in the design of parallel rendering algorithms and systems. We examine the different types of parallelism and how they can be applied in rendering applications. Concepts from parallel computing, such as data decomposition, task granularity, scalability, and load balancing, are considered in relation to the rendering problem. We also explore concepts from computer graphics, such as coherence and projection, which have a significant impact on the structure of parallel rendering algorithms. Our survey covers a number of practical considerations as well, including the choice of architectural platform, communication and memory requirements, and the problem of image assembly and display. (KAR)

Descriptors :   *IMAGE PROCESSING, *PARALLEL PROCESSING, *COMPUTER GRAPHICS, *IMAGE CONVERTERS, COMPUTER PROGRAMS, ALGORITHMS, REQUIREMENTS, COMPUTATIONS, HIGH RATE, IMPACT, TWO DIMENSIONAL, COMPUTER ARCHITECTURE, MEMORY DEVICES, THREE DIMENSIONAL, QUALITY, PLATFORMS, COLORS, IMAGES, WORK STATIONS, FRAMES, ASSEMBLY, PIXELS, DECOMPOSITION, FLOATING POINT OPERATION.

Subject Categories : Computer Programming and Software
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE