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

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The glbuffer for the Android NDK was useful for me.

This answer also has many tutorials linked.

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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).