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Thread: Clipping Mask to do a 2D GUI list box

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  1. #1
    Junior Member Newbie
    Join Date
    Apr 2012
    Posts
    6

    Clipping Mask to do a 2D GUI list box

    Hello, I am doing a menu system for my game right now. I would like to know what is the best way to do a clipping mask for a list box in OpenGL. The list can be of any lenght but the control itself has a set height. Which means that everything too long gets clipped and I show a vertical scroll bar on the side. As the user scroll down, my idea is to simple move up my list which is clipped to the border of the listbox. I would do the same horizontally if some strings in the list are too long for the width.

    How can I do that?

  2. #2
    Senior Member OpenGL Pro
    Join Date
    Jan 2012
    Location
    Australia
    Posts
    1,106
    Have a look a Gwen gui source - it does a nice job with glScissor for clipping

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