RE: Problems with MipMap-Level

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From: christopher.g.dorosky++at++lmco.com
Date: 04/07/2000 07:12:48

Depending on what you are doing, be sure to note the bug listed at the
bottom of the pfTexture page regarding mipmaps.

I've just gone through the same thing, if you need to send me mail and I
will help.

Christopher Dorosky
Senior Electronic Systems Engineer - Real Time Simulation
Lockheed Martin Missiles and Fire Control - Dallas
christopher.g.dorosky++at++lmco.com
972-603-2349

> ----------
> From: Ran Yakir[SMTP:rany++at++netvision.net.il]
> Reply To: rany++at++rtset.com
> Sent: Friday, April 07, 2000 6:49 AM
> To: Marc Hehmeyer
> Cc: info-performer++at++sgi.com
> Subject: Re: Problems with MipMap-Level
>
> I think you will have to create the mipmap levels yourself. I.e. disable
> the
> GENERATE_MIPMAP flag of the pfTexture, and supply the mipmap levels with
> setLevel.
> Creating them is fairly easy since every pixel of a certain level=n is an
> average
> of 4 pixels in level=(n-1)
>
> Ran
>
> Marc Hehmeyer wrote:
>
> > Hello all,
> >
> > so how can i manipulate the different Levels of a texture-mipmap?
> > I want to change the alpha-components.
> >
> > bye
> > Marc
> >
> > Ran Yakir wrote:
> >
> > > I think that you can use getLevel only if you set the levels
> implicitly with
> > > setLevel
> > >
> > > Ran
> > >
> > > Marc Hehmeyer wrote:
> > >
> > > > Hey folks,
> > > >
> > > > I have problems, with getting the different levels of a
> texture-mipmap.
> > > > The command "getLevel" of pfTexture returns always NULL, although
> the
> > > > texture has
> > > > a mipmap. Maybe one of you can help me out there.
> > > >
> > > > Thanks in advance,
> > > >
> > > > Marc
> > > >
> > > > --
> > > >
> +----------------------------------------------------------------------+
> > > > | Marc Hehmeyer | Phone +49/421/457-1896
> |
> > > > | STN-Atlas Elektronik | Fax +49/421/457-4120
> |
> > > > | Simulation Division | EMail hehmeyer++at++stn-atlas.de
> |
> > > > | D-28305 Bremen |
> |
> > > >
> +----------------------------------------------------------------------+
> > > >
> > > >
> -----------------------------------------------------------------------
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> > > --
> > > __ | Ran Yakir
> > > /_) _ __ \ / _ / o __ | RT-SET Ltd.
> > > / )_ (_(_) ) \/ (_(_/<_(_)( |
> > > _/ |
> > > -------------------------------------+--------------------------------
> > > Phone : | E-mail : rany++at++rtset.com
> > > Work : 972-9-9552236 Ext #118 | rany++at++netvision.net.il
> > > Res. : 972-9-7489974 |
> > > Cell.: 972-58-713040 |
> > > Fax : 972-9-9552239 |
> > >
> > > http://rtset.co.il/rany
> > >
> > >
> -----------------------------------------------------------------------
> > > List Archives, FAQ, FTP: http://www.sgi.com/software/performer/
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> >
> > --
> > +----------------------------------------------------------------------+
> > | Marc Hehmeyer | Phone +49/421/457-1896 |
> > | STN-Atlas Elektronik | Fax +49/421/457-4120 |
> > | Simulation Division | EMail hehmeyer++at++stn-atlas.de |
> > | D-28305 Bremen | |
> > +----------------------------------------------------------------------+
> >
> > -----------------------------------------------------------------------
> > List Archives, FAQ, FTP: http://www.sgi.com/software/performer/
> > Submissions: info-performer++at++sgi.com
> > Admin. requests: info-performer-request++at++sgi.com
>
> --
> __ | Ran Yakir
> /_) _ __ \ / _ / o __ | RT-SET Ltd.
> / )_ (_(_) ) \/ (_(_/<_(_)( |
> _/ |
> -------------------------------------+--------------------------------
> Phone : | E-mail : rany++at++rtset.com
> Work : 972-9-9552236 Ext #118 | rany++at++netvision.net.il
> Res. : 972-9-7489974 |
> Cell.: 972-58-713040 |
> Fax : 972-9-9552239 |
>
> http://rtset.co.il/rany
>
>
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> List Archives, FAQ, FTP: http://www.sgi.com/software/performer/
> Submissions: info-performer++at++sgi.com
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