Re: perfly in 3pipes

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Massimo Cuomo (m.cuomo++at++acsys.it)
Wed, 24 Jun 1998 21:23:23 +0200


Paolo,
when in a single hw pipe, you can share the graphic context among
pfPipeWindows using pfPWinType and setting the type to PFPWIN_TYPE_SHARE.

This should avoid the memory consumption.

When in hw multipipe it seems not possible to share the graphic context, as
the man pages for pfPipeWindow state that: PWPWIN_TYPE_SHARE will "attach to
the first pfPipeWindow on the PARENT pfPipe".
So it implicitly says that if the parent pfPipe is different...

Hope this helps.

Greetings to all of you,
                                                Massimo

--
Massimo Cuomo
ACS Studio Technical Manager
via Aurelia 58 - 00165 Rome - Italy
tel +39 06 3936331 - fax +39 06 39363317

Paolo Farinelli wrote:

> dear Performers, > > Can anyone tell me what difference in terms of main-memory consumption > we should expect when running perfly in 3pipes as opposed to single > pipe? > > We are only able to test with a single hw-pipe (3 pfPipeWindows) and > what our tests seem to indicate is that memory consumption increases > greately (more than twice as much), when loading texture-HEAVY models. > > Could it be that when loading textures on 3 pipes we end up having > three copies of each formatted texture image (all three presumably > identical)? > > thanks for your help, > > Paolo > > -- > Paolo Farinelli Infobyte Spa - Virtual Reality Division > VR Software Engineer Via della Camilluccia 67 - 00135 Roma - Italy > E-mail paolof++at++infobyte.it World Wide Web http://www.infobyte.it > Phone +39-6-35572219 Phone +39-6-355721 Fax +39-6-35572300 > > ======================================================================= > List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/ > Submissions: info-performer++at++sgi.com > Admin. requests: info-performer-request++at++sgi.com

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