Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (9): 168-170.DOI: 10.3778/j.issn.1002-8331.2009.09.048

• 图形、图像、模式识别 • Previous Articles     Next Articles

Programmable pixel shader for mobile devices

JI Jian,GUO Li,ZHENG Mai,GAO Lu

  

  1. Department of Electronic Science and Technology,University of Science and Technology of China,Hefei 230026,China
  • Received:2008-09-17 Revised:2008-11-17 Online:2009-03-21 Published:2009-03-21
  • Contact: JI Jian

面向移动设备的可编程像素渲染器的设计

季 健,郭 立,郑 迈,高 路   

  1. 中国科学技术大学 电子科学与技术系,合肥 230026
  • 通讯作者: 季 健

Abstract: This paper designs a high-performance programmable pixel shader for mobile devices.The pixel shader has a fixed-point 4-way SIMD arithmetic unit and pipeline structure with bypassing function.The efficient architecture increases the processing speed and reduces the circuit area.The pixel shader has been implemented on a FPGA platform.The experimental results show that the pixel shader has the ability to allow users to customize the real-time shading effects.

Key words: 3D graphics, pixel shader, bypass, Field-Programmable Gate Array(FPGA)

摘要: 传统的图形处理器中的像素混合单元是用功能固定的电路来实现的,实现了一个高性能的面向移动设备的可编程像素渲染器的设计。该处理器采用定点数操作,实现了4路共128位的单指令多数据的运算单元和具备数据旁路功能的8级流水线。这些结构特性有效地减少了电路面积,提高了像素渲染器的运算速度。该像素渲染器在FPGA平台上的实验结果表明,用户可以通过编程实现自定义的像素混合算法,以渲染出各种不同的特殊效果。

关键词: 3D图形处理, 像素渲染器, 旁路, 现场可编程门阵列(FPGA)