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Thread: gluUnProject returns wrong values

  1. 04-25-2004, 04:05 AM #1
    MacFly
    MacFly is offline
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    Apr 2004
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    gluUnProject returns wrong values

    Hi,

    I'm using gluUnProject to convert Screen coordinates to OpenGL. For most of the time it works fine but sometimes the function returns wrong value.

    For example I move mouse around the screen and Z value are Ok until the cross -120. Then the Z value is suddenly -630. The X value is OK.

    I would be grateful for any tip what can cause this problem.

    Regards.
  2. 04-28-2004, 11:57 AM #2
    endash
    endash is offline
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    Re: gluUnProject returns wrong values

    Could this be an issue of Z precision in the depth buffer. (I'm honestly not sure, but I feel like there might be something like that going on...)
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