[1]易学渊[],李涛[],蒲林[]. 一种图形处理用的多格式定点运算器[J].计算机技术与发展,2014,24(10):147-150.
　YI Xue-yuan[],LI Tao[],PU Lin[]. A Multi-format Fixed Point ALU for Graphics Processing[J].,2014,24(10):147-150.
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 一种图形处理用的多格式定点运算器()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
24
期数:
2014年10期
页码:
147-150
栏目:
智能、算法、系统工程
出版日期:
2014-10-10

文章信息/Info

Title:
 A Multi-format Fixed Point ALU for Graphics Processing
文章编号:
1673-629X（2014）10-0147-04
作者:
 易学渊[1] ; 李涛[2] ; 蒲林[2]
1. 西安邮电大学 计算机学院；2.西安邮电大学 电子工程学院
Author(s):
 YI Xue-yuan[1] ; LI Tao[2] ; PU Lin[2]
关键词:
 ; 图形处理; 超标量; 阻塞标志位; 指令级并行; 数据级并行
Keywords:
 ; graphics processing; superscalar; blockbing bit; instruction level parallel; data level parallel
分类号:
TP332
文献标志码:
A
摘要:
 典型图形处理管线中的隐藏面消除、视窗变换、图元光栅化和像素着色等渲染阶段只需要定点运算，但是这些定点运算的数值范围需要变动。因此，设计了一种多格式定点处理单元来满足这些运算需求。设计中采用了指令双发射和多配置流水线等超标量处理机制，访存采用直接寻址，不含通用寄存器和LD/ST操作。值得一提的是，指令字中设置了阻塞标志位，用于控制互连通信模式，数据字中设置了格式标志位，用于控制多格式定点数据的处理。处理器实现了指令级并行、数据级并行等并行处理方式。
Abstract:
 In typical graphics rendering pipeline,the stages after projection such as back-surface culling,viewport transformation,raster-ization and pixel shading,only need fixed point arithmetic operations. But the fixed point arithmetic operation range needs to change in different stage of operation. Hence,a multi-format fixed point Processing Element ( PE) for graphics processing is designed. Such mecha-nisms of superscalar technology as dual-issue instruction word and multi-configuration pipeline are adopted when design,no general reg-isters and LD/ST operations because of direct accessing mode. Particularly,a blockbing bit is set in the instruction word for the control of interconnect communication mode,also a few format bits are set in data word for the control of multi-format fixed point data processing. Parallel processing means like Instruction Level Parallel ( ILP) and Data Level Parallel ( DLP) can be found in design of PE.

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更新日期/Last Update: 2015-04-02