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Thread: opengl's win9x problem, that works under win2k! this is weird!

  1. #1
    Junior Member Newbie
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    Oct 2000
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    santana, madeira, portugal
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    opengl's win9x problem, that works under win2k! this is weird!

    hello,
    well i was here programming for my program, well and i sent it to some
    friends to test it..
    well here works just fine! no problems, no depth problems, nothing that i
    can see!

    the only problem is that a friend of mine told me that the program was
    wrong.. far away objects seemed to overlapped the nearer objects... well i
    have a far plane to clip objects that are in fog.. in my computer under
    win2k it works just fine, but finally i ended up running the program under
    win98 & winME.. well there i found the problems..

    the problems are that it seems that i didnt enabled GL_DEPTH_TEST or that i
    disabled Z writing, glDepthMask(GL_FALSE);

    well the problem is that why doesnt it run the same as under win2k???
    why does this problems appear under win98 & winME and not win2k???

    its weird to see the objects that shouldnt appear on screen, thru the
    objects that are on the screen...
    for example if i have a Tree that should be on the other side of the
    mountain, still i can see the top of the tree under win2k!!
    the problem under win98 & winME is that even without reaching the tree's
    position, i can see all tree thru the mountain!!
    also the FOG doesnt seem to apply to the trees... i have glEnable(GL_FOG) in
    the routine but it seems it isnt!!!

    well anyone know anything about this? i guess it cant be a opengl problem..
    but im tired of looking to the code and trying stuff with no success.. its
    hard to see a OS **** up your work! =) when everything just fine, and u go
    test it under other very similar OS and it doesnt work =)

    could it be coz of z buffer or anything like this? 16-bit? 32.bit? any ideas
    ? anyone? please? =)

    thanks in advance

  2. #2
    Member Contributor
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    Thuringia, Germany
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    Re: opengl's win9x problem, that works under win2k! this is weird!

    do you use the same graphic hardware? I solved many "night-filling-error-not-finding"
    problems by changing my tnt2 to a geforce

    bastian.

  3. #3
    Junior Member Newbie
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    Re: opengl's win9x problem, that works under win2k! this is weird!

    hey mcbastian
    well the thing is that im trying to make it work on most of the hardware

    this problem that i talk about happened on a p3 733 with a geforce 2.. but i tried it on other computer with geforce2 and worked fine..

    i finally found out that this problem happens on computers with win ME.. win 98 now works fine on the machines i tested

    anyway its weird.. last night this didnt work on a machine i have here.. today i tried the program again on same machine with no changes in the code and it worked just fine... go figure! will i ever understand computers eheh..

  4. #4
    Senior Member Regular Contributor
    Join Date
    Jul 2000
    Location
    Augsburg, Germany
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    334

    Re: opengl's win9x problem, that works under win2k! this is weird!

    If you use gluPerspective, than your
    parameter for the near clipping plane must
    not be 0.0! Set it to e.g. 0.1.

    Kilam.

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