GL mipmap question

[Stefan Dösinger]

Hi,
> OpenGL requires mipmap levels down to 1x1 (according to the red book), but
> DirectX can provide less levels, e.g. the smallest with 16x16. If I use
> such a mipmaped texture from d3d in opengl, this results in a white texture
> image. I've verified this with a GL-only program.
Never mind that, I just forgot to reduce the texture size for heigher levels. 
Now the mipmap example works fine. I don't know why my OpenGL test failed.
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