Subject:
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Re: Could someone run a perspective mode test on ldglite?
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Newsgroups:
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lugnet.cad.dev.mac
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Date:
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Thu, 6 Jun 2002 22:34:54 GMT
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Viewed:
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2125 times
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In lugnet.cad.dev.mac, Don Heyse writes:
> No it's not. But I'm glad the -z100 -Z2000 settings for the clipping
> planes fix it. Those are the clip plane settings I used to fix it
> for the 16Bit depth buffer on Mesa, so I guess I'll use them if the
> GL_VENDOR or GL_VERSION strings contain the word "ATI". I don't want
> to do it for all 24bit depth buffers because default clip planes seem
> to work on a 24bit Nvidia TNT. I suspect ATI still has problems with
> the polygon offset function in their drivers. Does anyone have a
> Rage 128 on a Windows machine? (This is probably the wrong place to
> ask that question :^)
True, but lucky for you, I was following this thread, and my work machine
(Windows 2000) has a Rage 128 Pro. I get the same effect with the -J
option. The -z100 -Z2000 fixes it.
One really strange thing, though. As far as I can tell, LDView doesn't
detect polygon offset at all on this ATI card (in Windows 2000). Do you
have some alternative algorithm that you use when glPolygonOffset doesn't
exist? I'll have to debug to be sure, but I believe that
wglGetProcAddress("glPolygonOffset") returns NULL on this machine.
--Travis Cobbs (tcobbs@REMOVE.halibut.com)
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