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Thread: Retrieving data from display lists

  1. #1
    Junior Member Newbie
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    May 2008
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    Retrieving data from display lists

    I was wondering if it's possible to retrieve vertex data from an OpenGL display list ID after the list is created. Can I access that data in any form?

    Thanks a bunch

  2. #2
    Senior Member OpenGL Guru Relic's Avatar
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    Apr 2000
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    2,450

    Re: Retrieving data from display lists

    Generally: No.
    Display lists are server state and will be optimized by the display driver to something different than you sent. E.g. immediate mode in, vertex arrays out.

    "In any form": Maybe.
    You might be able to get the data back with the OpenGL feedback mode (pure SW, slow!!!) or with an OpenGL command trace tool, but I guess that's not what you wanted.

    Simply don't go there. Use Vertex Buffer Objects if you need a more dynamic way of geometry data handling.

  3. #3
    Junior Member Newbie
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    May 2008
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    Re: Retrieving data from display lists

    Thanks a lot.

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