From: Alexandre Naaman (naaman++at++laplace.engr.sgi.com)
Date: 10/11/2001 11:04:56
On Thu, 11 Oct 2001, Todd J. Furlong wrote:
Hi Todd,
Ok, so you did not mention in your previous mail that you were using code
based on perfly.
You might want to ensure that your draw callbacks get invoked on the new
channel that you've created. That might explain the ghosting ...
As for the resizing issue, off hand, I dunno ...
A+,
Alex.
> Hi Alex,
>
> I believe Channel 0 is the GUI in the perfly program because the GUI
> briefly appears and then disappears when I try channel 0. I've been
> able to almost get stereo using channel 1, and I do an assert (which I
> didn't copy over to my e-mail) after getting the pointer to make sure
> it's not NULL.
>
> I am setting the stereo window by changing the FBAttrs variable in
> generic.C to match the stereo.c example. Does that seem right?
>
> // stereo display attributes
> static int FBAttrs[] = {PFFB_RGBA,
> PFFB_DOUBLEBUFFER,
> PFFB_STEREO,
> PFFB_DEPTH_SIZE, 23,
> PFFB_RED_SIZE, 1,
> PFFB_STENCIL_SIZE, 1,
> None,};
>
> Let me try and explain what I see with this approach: I get a stereo
> pair that looks fine, but there is an additional ghost image of my
> geometry that remains fixed on the screen when I rotate the viewpoint.
> Also, the window does not seem to respond to resize commands: it briefly
> resizes and then goes back to its original size. Any advice on thses
> problems?
>
> -Todd
>
> Alexandre Naaman wrote:
>
> > On Wed, 10 Oct 2001, Todd J. Furlong wrote:
> >
> > Hi Todd,
> >
> > Is it possible that:
> >
> > m_p_pfleft = p_mainpipe->getChan(1); //get main view
> >
> > is returning a NULL ptr?
> >
> > should this not be p_mainpipe->getChan(0) ?
> >
> > Are you setting up the frame buffer attributes on the pfPipeWindow
> > properly so that it supports stereo? Sounds like you are but it's not 100%
> > clear in your explanation what you've done to "declare the initial window
> > as a stereo window".
> >
> > A+,
> >
> > Alex.
> >
> >
>
>
>
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