[SDL] Function to scale surfaces... Scale(surface,ratio,newsurface)

[Federico Berardi]

    Sombody know where i can find a function like that or how can y program it?
a function that for example if a have a surface of 200*100 and i use the function with a ratio of 0.5 its reduces it a half... the new surface will be a surface of 100*50...
    Can you undestand?
Thanks
    Fede!
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