HB-ReTriple: Mobile rendering optimization based on efficient history reusing

UI rendering on smartphones needs powerful CPU and GPU to meet user-perceived smoothness, and it contributes a significant portion of energy consumption of the battery-driven device. Improving energy efficiency of rendering process without degrading user experience has attracted research attention in both academia and industry. In this work, we propose an energy-efficient rendering optimization framework, called HB-ReTriple, based on reusing the rendering results of the unchanged Views across adjacent frames. This reusing can effectively reduce the amount of computation spent on UI rendering, thereby saving considerable energy. We implement our framework on a real Android mobile platform, and the experiments show that HB-ReTriple achieves an average speedup of 2.89x in terms of frames-per-second (FPS) and an energy saving of 38.2% per-frame.

Automated summary

This paper proposes an energy-efficient rendering optimization framework, called HB-ReTriple, which reduces the computation spent on UI rendering by reusing the rendering results of unchanged views, thereby saving energy without degrading user experience.