CAJ | 학술논문

为满足大规模虚拟现实应用在渲染速度和显示分辨率等方面的要求,提出基于场景图技术的并行渲染,使用PC集群构建了高性价比的分布式图形系统.利用场景图在视景体内的快速裁剪技术,有效提高图元的归属判断速度.研究了OpenFlight格式与sort-first任务粒度划分的关系,基于场景图的层次结构来划分图元组.在保留模式下实现了一个基于场景图的sort-first原型系统,并用软件方式实现了多显示通道的无缝拼接.该系统同时考虑了CPU的功能并行和GPU的数据并行,提升了大规模场景漫游时的运行速度.
위만족대규모허의현실응용재선염속도화현시분변솔등방면적요구,제출기우장경도기술적병행선염,사용PC집군구건료고성개비적분포식도형계통.이용장경도재시경체내적쾌속재전기술,유효제고도원적귀속판단속도.연구료OpenFlight격식여sort-first임무립도화분적관계,기우장경도적층차결구래화분도원조.재보류모식하실현료일개기우장경도적sort-first원형계통,병용연건방식실현료다현시통도적무봉병접.해계통동시고필료CPU적공능병행화GPU적수거병행,제승료대규모장경만유시적운행속도.
Scene graph-based parallel rendering is proposed to build cost-effective distributed graphics system based on PC cluster in order to meet the need of large scale virtual reality applications. The procedure of primitives belongingness determining is speeded up using the fast view frustum culling technology of scene graph. The relationship between OpenFlight scene data format and the task granularity of sort-first is also researched and primitive groups are built based on the hierarchy of scene graph. We have realized a scene graph based sort-first prototype system which achieved seamless tile using the software way in retained mode. Both the function parallel of CPUs and the data parallel of GPUs is considered in this system, and it could improve frame rate while We ran large scale virtual scenes.