Before I'll make test maybe somebody knows answer.
Is this 2 cases equivalent (battery/performance), drawing (of course the same drawing and clearing buffered bitmap before):
1. directly on screen;
2.
A. First on buffered bitmap than
B. drawBitmap;
I feel 1 should be better but maybe drawBitmap is very fast, made by system so it compensates for drawing in 2 stages.
Of course if drawing only B. because drawing didn't change should be better.
