Re: transparency modes

New Message Reply Date view Thread view Subject view Author view

From: Angus Dorbie (dorbie++at++sgi.com)
Date: 08/31/2000 14:01:38

If you want to be explicit about the mode you can, if you want Performer
to pick what we have deemed to be the best more on that platform just
use _ON.

CHeers,Angus.

Marcin Romaszewicz wrote:
>
> On Thu, 31 Aug 2000, Yoram Shahak wrote:
>
> > Hi All,
> >
> > :o) !
> >
> > I am in the process of figuring out the diffrence between the different
> > state transparency modes.
> >
> > I quote from the man page :
> >
> > ------------------------------------------
> > PFTR_ON
> > IRIS Performer will use a default transparency mechanism
> >
> > depending on the machine being used.
> >
> > ------------------------------------------
> >
> > My question -
> >
> > How is the transparency mode dependent on the machine ?
>
> On a machine with a multisampling visual (IR, RE), we will use multisample
> based screen door transparency, since it's order independent.
>
> On any other machine, we need to use alpha transparency, which means that
> all the objects which are transparent need to be sorted back to front and
> drawn in after all the opaque stuff.
>
> -- Marcin
>
> -----------------------------------------------------------------------
> List Archives, FAQ, FTP: http://www.sgi.com/software/performer/
> Submissions: info-performer++at++sgi.com
> Admin. requests: info-performer-request++at++sgi.com 

-- 
For Performer+OpenGL tutorials http://www.dorbie.com/

"In the middle of difficulty lies opportunity." 
 --Albert Einstein

New Message Reply Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Thu Aug 31 2000 - 14:01:54 PDT

This message has been cleansed for anti-spam protection. Replace '++at++' in any mail addresses with the '@' symbol.