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no RED in fullscreen mode

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I am doing the nehe-tutorials for opengl. Strange thing: in fullscreen mode, the RED-part of rgb-colors isn''t shown. A pure red triangle stays black. In window mode it looks normal. Why is that so?

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Drivers, drivers...
I had exactly the same problem under WinNT4.
You have to get a decent OpenGL-compatible card and/or to download the latest drivers.

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