Hi.
My application draws many Objects using glDrawElements();
But, When I called GL_LINE_LOOP flag, My Cpu worked highly.
So, I wonder Line drawing use CPU instead of graphic accleration.

I am using PowerVR PC emulation OpenGL ES 1.1 common profile.

I called only this function.

glEnable(LINE_SMOOTH);
glDrawElements(GL_LINE_LOOP....);