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A 195 mW, 9.1 MVertices/s Fully Programmable 3-D Graphics Processor for Low-Power Mobile Devices

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4 Author(s)
Jeong-Ho Woo ; Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon ; Ju-Ho Sohn ; Hyejung Kim ; Hoi-Jun Yoo

A 195 mW, 9.1 Mvertices/s fully programmable 3-D graphics processor is designed and implemented for mobile devices. The mobile unified shader provides programmable per-vertex operations and per-pixel operations in a single hardware and thus, it achieves 35% area and 28% power reduction compared with previous architecture. The pixel-vertex multi-threading enhances the 3-D graphics performance by enabling to compute the per-vertex operations and the per-pixel operations at the same time. By adopting the pixel-vertex multi-threading, 94% of the per-vertex operations are interleaved into the per-pixel operations and enhances 3-D graphics performance in real applications. The logarithmic lighting engine and specialized lighting instruction improve the vertex throughput including transform and OpenGL lighting up to 9.1 Mvertices/s, which is 2.5 times higher performance compared with previous works. The proposed 3-D graphics processor is implemented in 3.3 mmtimes3.0 mm using 0.13 mum CMOS process and it was successfully demonstrated on the system evaluation board.

Published in:

IEEE Journal of Solid-State Circuits  (Volume:43 ,  Issue: 11 )