Re: 3d texture

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Angus Dorbie (dorbie++at++sgi.com)
Tue, 06 Jul 1999 15:19:27 -0700


You only need to use texgen for the r coordinate and even then there's a
packed vertex array geoset format which uses 3 texture coordinates so
you can explicitly specify all 3 coords. Just be aware that you are not
limited to the texgen constraints in this volume rendering example.

The bumplogo in this same set of tutorials also uses 3D texture:

http://www.sgi.com/software/performer/brew/bumplogo.html

I use explicit s&t coordinates to wrap an image around the logo then
create a funky rotating, translating & scaling texgen plane for r to
blend between multiple images in the 3rd texture dimension in a single
pass. I thought it was a cool idea at the time.

Cheers,Angus.

Rob Jenkins wrote:
>
> Angus's stuff has a sample:
>
> http://www.sgi.com/software/performer/brew/volume.html
> <http://www.sgi.com/software/performer/brew/volume.html>
>
> Cheers
> Rob
>
>
> -----Original Message-----
> From: wtong [mailto:ymwu++at++center2.swjtu.edu.cn]
> Sent: 01 July 1999 10:16
> To: info-performer++at++sgi.com
> Subject: 3d texture
>
> Hi :
> Everyone .
>
> Could you tell me how to generate 3D texture and how to use it in
> Performer.
>
> Thanks a lot.
>
> wtong
> Jul 1

-- 
For years now, whenever NT has been proven to have some debilitating
weakness we've heard from MS advocates that NT would catch up, there was
just an incredible faith in this OS and Microsoft's ability to somehow
get there. With the recent results of the Linux vs NT serving benchmark
that same attitude can be seen in the Linux community. The Linux folks
aren't too worried, "Sure the single threaded IP stack was slow but
it'll be fixed in the next release.", it's eerily familiar but I have
confidence in the Linux community's ability to remedy problems and I
don't groan in pain as I used to when Microsoft made similar claims.

For advanced 3D graphics Performer + OpenGL based examples and tutors: http://www.dorbie.com/


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