Brian Furtaw (brian++at++sgi.com)
Tue, 22 Apr 1997 09:16:11 -0400
As far as I can tell you should use PFTEX_SUBLOAD_FORMAT it determines the z
origin and depth from the information passed in about the texture map, you
can't change the values for subtexloading. So when you specify the xy origin
and offset you are defining a volume that goes from zmin to zmax.
Brian
On Apr 22, 2:13pm, richard koh wrote:
> Subject: Subloading of 3D textures
> Can anyone please tell me whether can I subload a 3D texture?
>
> I am trying to render a 3D volume, but the size is bigger than my
> texture ram (my system is a High Impact w/ 1 TRAM). Can I then use
> PFTEX_SUBLOAD_FORMAT, to load part of the texture which is suitable for
> the TRAM, and render the volume by repeating the process.
>
> >From the man pages, I see that pfTexture::setLoadOrigin and
> pfTexture::setLoadSize has only 2 parameters, so I reckon this can be
> used only on 2D texture. I would like to know whether can
> PFTEX_SUBLOAD_FORMAT be used on 3D textures in Performer.
>
> Can anyone please advice me on how to carry out the rendering of a large
> 3D texture on my system?
>
> Thanks,
>
> richard
> =======================================================================
> List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
> Submissions: info-performer++at++sgi.com
> Admin. requests: info-performer-request++at++sgi.com
>-- End of excerpt from richard koh
-- o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-oBrian Furtaw (brian++at++sgi.com) VisSim Technical Consultant 12200-G Plum Orchard Drive Office:(301)572-3293 Fax: (301)872-3293 Silver Spring, Maryland 20904 OpenGL/ImageVision/OpenInventor/Performer ======================================================================= List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/ Submissions: info-performer++at++sgi.com Admin. requests: info-performer-request++at++sgi.com
This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:55:06 PDT