一种Sort-first构架的基于包围球的归属判断策略  

A SORT-FIRST ARCHITECTURE BELONG-DETERMINING POLICY BASED ON ROUND-BALL

作　　者：黄晓生[1] 顾景文[2] 

机构地区：[1]同济大学计算机科学与技术系 [2]同济大学建筑与城市规划学院,上海200092

出　　处：《计算机应用与软件》2007年第10期67-69,共3页Computer Applications and Software

摘　　要：在大规模场景并行渲染系统的任务拆分过程中,当场景比较复杂,图元数量较多时,采取一种有效的归属判断策略对整个系统的效率具有重要影响。针对采用Sort-first架构的基于立即模式的包围盒的归属判断策略的固有缺点,介绍了一种基于驻留模式的包围球的归属判断策略。实验结果表明,采用这种基于"包围球"的归属判断策略相对于基于"包围盒"的归属判断策略大大提高了图元归属情况的计算速度。During the process of task-redistributing in a large scale parallel rendering system, an efficient belong-determining policy has a distinct impact on the whole system performance in complicate field with many primitive shape elements. A new belong-determining policy based on round-ball in retained mode is proposed to overcome the native shortcoming of the policy based on round-box in immediate mode, It＇s shows with experiments that the new policy greatly speeds up the progress of belong-determining.

关 键 词：并行渲染 归属判断 包围球 立即模式 驻留模式 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]