View Full Version : opengl's win9x problem, that works under win2k! this is weird!

11-29-2000, 02:08 AM
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

11-29-2000, 05:24 AM
do you use the same graphic hardware? I solved many "night-filling-error-not-finding"
problems by changing my tnt2 to a geforce http://www.opengl.org/discussion_boards/ubb/smile.gif


11-29-2000, 10:16 AM
hey mcbastian http://www.opengl.org/discussion_boards/ubb/smile.gif
well the thing is that im trying to make it work on most of the hardware http://www.opengl.org/discussion_boards/ubb/smile.gif

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 http://www.opengl.org/discussion_boards/ubb/smile.gif

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! http://www.opengl.org/discussion_boards/ubb/smile.gif will i ever understand computers eheh..

Kilam Malik
11-30-2000, 01:23 AM
If you use gluPerspective, than your
parameter for the near clipping plane must
not be 0.0! Set it to e.g. 0.1.