Play Video on GPU

Hi everyone,

I am currently trying to find out how can I play video using GPU on the BB-X15.
I’m using debian, X11, mesa, etnaviv. I’m playing videos with mplayer specifying video output driver fbdev2 for h264 videos. My CPU usage %20 while playing video but I could not catch GPU usage. How can I catch GPU usage? Is video really playing on GPU?