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Thread: Flickering Problem with Display Lists

  1. #1
    Junior Member Newbie
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    Apr 2008
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    Flickering Problem with Display Lists

    Hey,

    I'm running into a problem with the display lists I'm using. Fundamentally the problem is that when I use display lists for the object I am trying to render, the objects flicker and are drawn incorrectly. When I invoke the drawing code directly there are no problems.

    Here are two pictures of the objects, one drawn correctly and one drawn with display lists.
    http://www.cs.rit.edu/~joc0225/BeachBalls1.JPG
    http://www.cs.rit.edu/~joc0225/BeachBalls2.JPG

    The objects that I'm drawing are spheres. I want certain slices of the spheres to be gray and other parts to be white. To do this I am using two clipping planes to cut the sphere into the portions I want and draw it 4 times with the desired colors.

    Also I did not run into this problem when drawing the objects on my Macbook Pro. I am running into these problems on an Intel 82915G/GV/910GL Express Chipset.

    Any help here would be much appreciated.

    Thanks
    Justin

  2. #2
    Junior Member Newbie
    Join Date
    Apr 2008
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    Re: Flickering Problem with Display Lists

    So no one's run into anything of this sort?

  3. #3
    Super Moderator OpenGL Lord
    Join Date
    Dec 2003
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    Grenoble - France
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    Re: Flickering Problem with Display Lists

    Not to my knowledge.
    But you are going a strange route, and the minimal Intel graphic "accelerators" (as they call it) is quite likely to have a couple of problems with it.

    Maybe you abuse too much of pushmatrix/popmatrix, and your hardware does not support so many levels ? Try putting glGetError somewhere, and be sure you have no gl error. GlIntercept is also a good tool to debug GL code, but I think it is only released for Windows.

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