Re: Texture Mapping problem on Max Impact

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Brian Furtaw (brian++at++sgi.com)
Tue, 26 Nov 1996 10:51:11 -0500

Luigi,

The zbuffer resolution close up is high but as you move into the distance the
resolution becomes sparse. In other words since your objects are so close
together and far away round off is placing them at the same place in the
zbuffer. Try pfLayer to place the geometry, that should solve your problem.

Here are two sample programs that you get with poerformer that should help you,
/usr/share/src/Performer/src/pguide/libpf/C++/layer.C and motif.C they both
have C counter parts in the ../C directory.

Brian

On Nov 25, 9:17am, Luigi Rella wrote:
> Subject: Re: Texture Mapping problem on Max Impact
> I have a similar problem.
>
> I build a terrain model where I put some objects.
>
> When I move the point of view in the scene, some polygons blink and the
objects
> seem to disapper under the terrain (this effect is appear also in wireframe
> mode) even if the objects are in the sky.
>
> But, for particular view directions everything look fine: objects don't
> disappear under the terrain model and, moving toward an object in these
> directions, it looks ok when I am close but they still remain corrupted in
the
> distance.
>
> I use an Indigo2 R10K running Irix6.2 and Performer 2.1.
>
>
>
>
>
>
> --
> _ _ mmm \\|//
> (.) (.) ( O O ) ( o o )
> ---------oO00--(_)--00Oo----oOO--(_)--OOo----oOO--(_)--OOo-------------
> | |
> | rella++at++aguirre.ing.unifi.it |
> | Luigi Rella http://aguirre.ing.unifi.it/~rella |
> | (39) 55 47 96 425 |
> | |
> -----------------------------------------------------------------------
> =======================================================================
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>-- End of excerpt from Luigi Rella

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Brian Furtaw  (brian++at++sgi.com)	
VisSim  Technical  Consultant
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