Re: Near clipping plane/ Z fighting

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Angus Dorbie (dorbie++at++sgi.com)
Fri, 23 Apr 1999 13:37:03 -0700

This is a z precision problem .

The answer is "it depends on your application and zbuffer precision".

You can use pfLayers to adjust the offset.

Look at the manual for pfLayer and glPolygonOffset.

Cheers,ANgus.

Tammy Martin wrote:
>
> Hi
> I was wondering if someone could give me some information
> about what is the optimal distance for the near clipping plane. I
> have an application where I draw ground tracks very near to the
> terrain, this causes a flickering to occur. However, I noticed that if I
> push the near clipping plane closer to the object the flickering will
> disappear. Our default near clipping plane is set to 5.0 feet. Is
> there some type of formula that will give the value you should set
> your near clipping plane to based on camera distance, FOV, etc?
> Is there a book or manual that describes these issues?
>
> Thank you.
>
> Tammy
> tmartin++at++metricsys.com
>
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