Extensions (only known way to use OpenGL > 1.1)

[eror]

Hi.

I've got a question. What would happen, if I used nVidia (for example) extension in program, and run it on machine with ATI accelerator?

There would be an error, or maybe it would be handled in software way?

[Bob]

You just wouldn't get the function pointers from wglGetProcAddress. What happens depends on how your code handles the situation. For example, if your code blindly assumes a certain extension is present and just use the function pointer without checking if it really is, your program will most certainly crach horribly when calling the function.