Subject:
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Re: Ideas for next MOTM contest
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 26 May 2004 19:51:16 GMT
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Viewed:
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2212 times
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In lugnet.cad.dev.org.ldraw, Don Heyse wrote:
> In lugnet.cad.dev.org.ldraw, Don Heyse wrote:
> > > Yeah. Unfortunately, tweaking the numbers can mess up other models.
> > > On the other hand if you think the numbers you are using don't ever
> > > produce bleed-through, I'd love to know what you're using.
> >
> > Nope. I have the same problem. Possibly even worse with antialiased
> > lines. I give them an extra bump forward beyond the polygon offset.
> > More bits in your Z buffer reduces the symptoms somewhat.
>
> Oh yeah, and bringing in the near and far clip planes also helps,
> especially with a perspective projection. Orthographic projections
> give me less of a problem with the Z-bleeding. Maybe you should add
> an ortho mode.
(I hope you see this reply. Since it no longer has anything to do with
ldraw.org, I moved it to the general dev group.)
I'm guessing you mean moving out the near clip plane. This can indeed help a
whole lot. I actually set the near and far clip planes based on the bounding
sphere. However, if you get closer than a certain distance, or inside the
bounding sphere, obviously the near plane has to have a minimum which gets used
instead.
--Travis
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