Android :: Fil-rate Workaround With FBOs?

create an FBO of resolution less than the full phone screen dimensions (user-selected quality vs speed option) do most of my scene rendering into that FBO * then the 'real' (full screen) render would either use the FBO as the starting background color buffer contents, or render it (probably orthographically) as a single quad. * then probably add UI/Text decoration on top of that, where the resolutions really benefits.And, is there some egl glue (I am a glSurfaceView kinda dood) that would automagically do something like this in the first place?Or am I being naive to think the GPU could do its work faster if it was rendering to a lower resolution target? And would the phone with the worst fill rate also be the phone that doesn't support FBOs in the first place?