A performance evaluation of read/write burst transfer by high-level synthesizable software for the alpha blending processing

High-level synthesis, HLS is a technology to convert the software into the hardware automatically. It is expected as a technology that can greatly reduce the load of the hardware development. However, the current HLS that cannot convert the software not considered the hardware configuration into the optimum hardware. One of characteristics of the hardware to be considered is the burst transfer of memory access. In this paper, we evaluate the burst transfer with a subject of alpha blending processing as a theme. It is necessary to describe the program, so that the HLS tool can implicitly infer the burst transfer, because HLS tool does not have a pragma designating the burst transfer. We consider the description method of the program to infer the burst transfer and clarify the influence of read/write burst transfer on alpha blending.