[vtkusers] Re: Bug with Multiple Renderer. (An update)

[Sebastien Auclair]

GreeTings !!

Somebody just sent me an e-mail saying that they had the same problem.
It's related to the Graphic Card config option"Use unified back/depth
buffer" of our NVIDIA Quadro4 9000 XGL.

But i'm not sure that unselecting this option is the right solution. (But it
works !!)

We still have the problem when moving the mouse pointer in and out the
vtkRenderWindow seems to add layers of opacity to the surfaces with Alpha
set to a certain transparency degree.

For this we'll investigate other card settings but if you have some
suggestion, don't esitate.

But again, is unselecting this graphic card option the right things to do or
could it be just a patch for something wrong in the code ?
And is there a place where we can find informations about graphic card
settings for vtk ?

Thanks again !

_________________________________________________
Seb

----- Original Message -----
From: "Carsten Kübler" <kuebler at ira.uka.de>
To: "Sebastien Auclair" <sxa at fluent.com>
Sent: Tuesday, February 04, 2003 9:21 AM
Subject: AW: Bug with Multiple Renderer. (An update)


> Hello Sebasien,
>
> > Are you on unix(linux) or Win2000 ?
> On both, but I prefer Win2000.
>
> > Our problem is only visible on Win2000.
> >
> > I made a small VC++6.0 project were the problem can be seen.
> >
> > It's got to be something very simple !
> >
> > A more easy way to describe the bug is as follows :
> >
> >     -- If any programs, like for instance Netscape, appears in
> > front of our
> > software, the Netscape's pixels above those of the vtkRenderWindow are
> > somehow kept somewhere in our application.
> >         If i go back to our software with the mouse cursor above the
> > vtkRenderWindow, everything is fine. But if the mouse pointer is moved
> > outside the vtkRenderWindow area,  all the pixels (vtkRenderWindow) are
> > replaced with those of Netscape !!!
>
> This is an simple event problem!
>
>
> > I can send my demo project if you can do something with it. (i.e.
> > If yor're
> > using Win2000 & VC++ 6.0)
>
> That is our config!
>
> Carsten