Stereo in a X Window is working now !

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Daniela Rainer (zrgr0390++at++visin2.rus.uni-stuttgart.de)
Thu, 13 Jun 1996 14:37:55 +0000

Thanks to Larry Peruski and Gerald Hofer who answered to my question!

Now stereo in a X window is working in my Performer 2.0 programm.
For those people who are interested in stereo: I made two mistakes:

1. I opened the window with pfOpenPWin. That doesn't configure the window for
        stereo. You have to open the window with pfuGLXWinopen. (I don't know
           the difference between pfOpenPwin and pfuGLXWinopen, perhaps the
Performer people can tell me the difference). This method is working:

    pfPipe *p;
    static int FBAttr[] = { PFFB_RGBA, PFFB_DOUBLEBUFFER, PFFB_STEREO, NULL};

    p = pfGetPWinPipe(pw);

    if (!(glxWindow = pfuGLXWinopen(p, pw, "")))
        pfNotify(PFNFY_FATAL, PFNFY_RESOURCE, "Could not create GLX Window.");
    glWindow = glxWindow->glWin;
    xdisplay = pfGetCurWSConnection();

    pfChoosePWinFBConfig(pw, FBAttr );

2. In the PreDraw-Callback I cleared the channel before I set the buffer. The
right order is

    if (stereoFlag)
    {
        XSGISetStereoBuffer(xdisplay, glWindow, STEREO_BUFFER_LEFT);
        XSync(xdisplay, False);
        pfClearChan(chan);
    }
    else
    {
        XSGISetStereoBuffer(xdisplay, glWindow, STEREO_BUFFER_RIGHT);
        XSync(xdisplay, False);
        pfClearChan(chan);
    }
    stereoFlag = !stereoFlag;

Regards
Daniela

-- 
----------------------------------------------------------------------------
Daniela Rainer


rainer++at++rus.uni-stuttgart.de
Tel.: ++49-(0)711-685-5970
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