C# software development with OpenGL ES

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I'm making a kind of music program mostly for entertainment value, using C# and OpenGL ES. I'm calling into Windows Media Player from my program.

I come from pre-existing 3D engines, so I'm just wondering what the best way to draw a pixel-precise image to the screen in OpenGL is - IE if I have a 64x64 bitmap and place it at 0, 0, I expect it to go from 0, 0 to 63, 63 and that's it. This way I can detect when the image has been touched - thus a bitmap button.

I tried using GDI, but it flickered terribly with the OpenGL rendering, even after placing the draw call after the OpenGL rendering was complete.

Does anyone have any pointers for me? Thanks in advance and thanks to the community for everything.

Originally Posted by AndyCR

if I have a 64x64 bitmap and place it at 0, 0, I expect it to go from 0, 0 to 64, 64 and that's it.

If it's a 64x64 bitmap and it starts at 0,0, I would rather expect it to go to 63x63 otherwise buffer should represent a bitmap of 65x65, isn't it ?

It's like a byte, can have 256 values from 0 to 255

You caught me. I'll edit it to reflect that. (I thought it looked wrong, but decided not to change it.)

DrawTexOES(). You can look it up against the Khronos OpenGL ES docs, and my KaiserGL SDK in the Kaiser software thread.

Don't mix GDI with OpenGL ES.