MIGPU-9多核交互式图形处理器的设计
The Design of a Multiprocessor Interactive GPU MIGPU-9
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摘要: 鉴于图形处理器的应用日趋广泛,多核SoC的研究日益迫切,设计了一款多核交互式图形处理器MIGPU-9及其完整的软件系统.为了兼顾编程灵活性和计算高效性,设计了具有专用指令的前端处理器FEP、支持定点/浮点运算与函数求值器的顶点染色处理器VSP、双模式的剪裁投影处理器PCPTC,以及数个像素染色处理器PSP等共计9个微处理器核;MIGPU-9将这9个具有不同功能和不同结构的微处理器核以及各种专用加速电路以双轨握手的流水线形式集成到一块XC6VLX550T FPGA上,实现了图形处理任务在不同处理器核及专用电路上的并行计算.测试结果表明,MIGPU-9支持OpenGL2.0和DirectDraw,像素填充率最高可达40 M/s,电路规模超过527万门.Abstract: Because of the widely use of graphics processing unit and the urgent research of multiprocessor SoC,this paper proposes a multiprocessor interactive graphics processing unit(MIGPU-9) and its entire software system.For the sake of programmability and efficiency,MIGPU-9integrates 9 processor cores and many sophisticated application-specific accelerators into the system.It is implemented on a XC6VLX550 T FPGA using dual-rail handshaking in its pipeline design,so the rendering tasks can be fairly distributed among its processor cores and accelerators.The processor cores include a front-end processor with application-specific instructions,several vertex shading processors that support fixed-point/floating-point arithmetic and elementary function evaluators,a plane clipping-projection processor core and a 3D clipping processors core,and a few pixel shading processor cores.The experimental results show that MIGPU-9 can support OpenGL 2.0 and DirectDraw,its pixel filling rate can reach 40 M pixel/s,and the gate count is more than 5.27 million.
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