NDLI: A programmable vertex shader with fixed-point SIMD datapath for low power wireless applications

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A programmable vertex shader with fixed-point SIMD datapath for low power wireless applications

A programmable vertex shader with fixed-point SIMD datapath for low power wireless applications

Content Provider	ACM Digital Library
Author	Yoo, Hoi-Jun Sohn, Ju-Ho Woo, Ramchan
Abstract	The real time 3D graphics becomes one of the attractive applications for 3G wireless terminals although their battery lifetime and memory bandwidth limit the system resources for graphics processing. Instead of using the dedicated hardware engine with complex functions, we propose an efficient hardware architecture of low power vertex shader with programmability. Our architecture includes the following three features: I) a fixed-point SIMD datapath to exploit parallelism in vertex processing while keeping the power consumption low, II) a multithreaded coprocessor interface to decrease unwanted stalls between the main processor and the vertex shader, reducing power consumption by instruction-level power management, III) a programmable vertex engine to increases the datapath throughput by concurrent operations with main processor. Simulation results show that full 3D geometry pipeline can be performed at 7.2M vertices/sec with 115mW power consumption for polygons using the OpenGL lighting model. The improvement is about 10 times greater than that of the latest graphics core with floating-point datapath for wireless applications in terms of processing speed normalized by power consumption, Kvertices/sec per milliwatt.
Starting Page	107
Ending Page	114
Page Count	8
File Format	PDF
ISBN	3905673150
ISSN	17273471
DOI	10.1145/1058129.1058144
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2004-08-29
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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