Hello, First of all, Im not very acquaintance with openGL ES, but I have t use it for what I need. Anyway, the thing is I need to draw 2 concentric circles with area between the 2 circumferences filled with a color and probably an alpha, but the middle of the inner circle has to be transparent. So I found out how to draw a circle and fill it up with a color. But Im in trouble, with the second circle. I can draw it on top, but of course if I don't put any color what I see is the outer circle's color.... :S.. I read somewhere that I will have to apply some mask or something, but that was all...:S Any help would be very appreciate it. Thx a lot G.