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SGRT: A Mobile GPU Architecture for Real-Time Ray Tracing


1)Won-Jong Lee, 1)Youngsam Shin, 1)Jaedon Lee, 2)Jin-Woo Kim, 3)Jae-Ho Nah, 

1)Seok-Yoon Jung, 1)Shi-Hwa Lee, 4)Hyun-Sang Park, and 2)Tack-Don Han

1)SAMSUNG Advanced Institute of Technology 2)Yonsei University 

3)University of North Carolina at Chapel Hill 4)National Kongju University



Recently, with the increasing demand for photorealistic graphics and the rapid advances in desktop CPUs/GPUs, real-time ray tracing has attracted considerable attention. Unfortunately, ray tracing in the current mobile environment is very difficult because of inadequate computing power, memory bandwidth, and flexibility in mobile GPUs. In this paper, we present a novel mobile GPU architecture called SGRT (Samsung reconfigurable GPU based on Ray Tracing) in which a fast compact hardware accelerator and a flexible programmable shader are combined. SGRT has two key features: 1) an area-efficient parallel pipelined traversal unit; and 2) flexible and high-performance kernels for shading and ray generation. Simulation results show that SGRT is potentially a versatile graphics solution for future application processors as it provides a real-time ray tracing performance at full HD resolution that can compete with that of existing desktop GPU ray tracers. Our system is implemented on an FPGA platform, and mobile ray tracing is successfully demonstrated.


Paper preprint (pdf, 4M)


Talk Slides (pdf, 3.4M)

Related Publications


"Energy Efficient Data Transmission for Ray Tracing on Mobile Computing Platform", Youngsam Shin, Won-Jong Lee, Jaedon Lee, Shi-Hwa Lee, Soojung Ryu, Jeongwook Kim, ACM SIGGRAPH ASIA 2013, Symposium on Mobile Graphics and Interactive Applications

(MGIA), article no. 64, November. 2013.

"Real-Time Ray Tracing on Coarse-grained Reconfigurable Processor," Jaedon Lee, Youngsam Shin, Won-Jong Lee, Soojung Ryu, Jeongwook Kim, International Conference on Field-Programmable Technology (ICFPT), pp. 192-197, Dec., 2013. 

"Two-AABB Traversal Architecture for Real-time Mobile Ray Tracing," Jaedon Lee, Won-Jong Lee, Youngsam Shin, Seok Joong Hwang, Soojung Ryu, Jeongwook Kim, ACM SIGGRAPH ASIA 2014, Symposium on Mobile Graphics and Interactive Applications (MGIA), article no. 14.  


"Shading Language Compiler Implementation for a Mobile Ray Tracing Accelerator," Seok Joong Hwang, Ankur Deshwal, Won-Jong Lee, Youngsam Shin, Jaedon Lee, Donghoon Yoo, and Soojung Ryu, ACM SIGGRAPH ASIA 2014, Symposium on Mobile Graphics and Interactive Applications (MGIA), article no. 2.


author = {Won-Jong Lee and Youngsam Shin and Jaedon Lee and Jin-Woo Kim and Jae-Ho Nah and Seok-Yoon Jung and Shi-Hwa Lee and Hyun-Sang Park and Tack-Don Han},
title = {{SGRT}: A Mobile {GPU} Architecture for Real-Time Ray Tracing},
booktitle = {Proceedings of ACM High Performance Graphics 2013},
year = {2013},
pages = {109--119},

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