多线程双向并行扫描光栅化硬件加速器  

Multi-threaded bidirectional parallel scan rasterization hardware accelerator

作　　者：赵建龙 李涛 董中华 冯臻夫 ZHAO Jianlong;LI Tao;DONG Zhonghua;FENG Zhenfu(School of Electronic Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China)

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121

出　　处：《传感器与微系统》2021年第5期91-93,97,共4页Transducer and Microsystem Technologies

基　　金：陕西省重点研发计划资助项目(2017ZDXM-GY-005);西安市科技局项目(201805040YD18CG24(5))。

摘　　要：光栅化是图形渲染管线中的关键环节,光栅化加速器是决定图形处理器性能的重要部件。基于重心坐标系的透视校正插值算法,在边函数算法基础上,提出双向四行并行的扫描方式,优化了光栅化算法,提高了图形渲染管线效率。硬件上实现了多线程双向并行扫描的光栅化加速器,验证环境采用20 nmXCVU440平台芯片,综合实现后频率为125 MHz,满足设计需求。Rasterization is a key part of the graphics rendering pipeline.Rasterization accelerators are important components that determine the performance of graphics processors.Based on perspective correction interpolation algorithm of gravity center coordinate system,a bidirectional four-row parallel scanning mode is proposed on the basis of edge function algorithm,rasterization algorithm is optimized,and the efficiency of graphics rendering pipeline is improved.A rasterization accelerator for multi-threaded bidirectional parallel scanning is implemented on the hardware.The verification environment uses a 20 nm XCVU440 platform chip,and the integrated frequency is 125 MHz,which satisfies the design requirements.

关 键 词：图形渲染管线 光栅化加速器 透视校正插值算法 多线程双向并行扫描 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]