2D example with OpenGL

I am looking for a very simple tutorial to use OpenGL only for 2D drawing.

My problem is that I w开发者_C百科ant to draw, with OpenGl a bitmap having its pixels.

Thank you in advance, Ouael

The glbuffer for the Android NDK was useful for me.

This answer also has many tutorials linked.

Get any 3d example and just set the z coordinate to zero.

e.g. if you have coordinates like (2,3,1) change it to (2,3) or (2,3,0).