live video texture -> frame rate

New Message Reply Date view Thread view Subject view Author view

Meiner (101717.2510++at++CompuServe.COM)
22 Oct 96 17:14:25 EDT

Hello,

I'm trying to use live-video-textures within a performer-application. The
video-signal
comes from crystaleyes-cameras through the siriusboard into an ONYX with RE2.

The video-texture-stuff bases upon the 'vidtotex.c'-example coming with the
videolibrary
for the sirius-board.

Now, the problem is, that the framerate is going down to 20Hz when I'm using the

videotextures. I'm getting the videosignal noninterlaced, so it should be
possible to
get a framerate of 50/60Hz.

The bottleneck seems to be the GL's 'subtexload'. I found it very surprising
that the frame
rate stays the same, no matter if I grab 1024x1024 or 1024x512 pixels from the
siriusboard.

So if anybody has an idea, ...

Thanks a lot,

Ulrich Huenemoerder.

=======================================================================
List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
            Submissions: info-performer++at++sgi.com
        Admin. requests: info-performer-request++at++sgi.com

New Message Reply Date view Thread view Subject view Author view

This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:53:47 PDT

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