高速三维地形显示系统的体系结构

从自行设计的专用三维地形显示的硬件和软件系统的观点出发，讨论了高速三维地形显示系统的体系结构、关键技术及其实现方法。以新一代的高速处理器ＩＮＴＥＬｉ８６０为核心，采用分配树技术，解决多路并行输出产生的竞争和瓶颈问题；实现Ｚ－缓冲硬件算法，提高系统的图形消隐速度；设计多帧存体结构，支持多通道、多画面信息的快速显示。

Hierarchy of High Speed 3D Terrain Display

From viewpoint that the hardware and the software of special 3D terrain system must be designed by ourselves,we discuss the architecture, key techniques and their realization of a typical high speed 3D terrain system in this paper.First of all we select high speed processor INTEL i860 as kernel of the system.Then we design a special unit called'allocating tree'to solve the contention and bottleneck problem caused by mutiltunnel outputs.Thirdly,we realize the hardware Z-buffer algorithm,by which visible surface determination can be sped.Lastly,we use mutil-frame buffer technique to support high refresh of mutil tunnels and mutil drawing bodies.