Hans,

Thanks for your kind reply.  Here's what I observe, in response to your
questions:

Playback Video Driver:

1.  The problem seems to appear only when using X11-OpenGL.
2.  When I change to X11-OpenGL, from X11 or X11-XV, multiple instances of
the error message (as seen in my earlier posting) are thrown to the console
as soon as 'Apply' is clicked.
3.  The same error is thrown (multiple times) whenever the Compositor is
advanced to a new frame, as long as X11-OpenGL is selected.  The anomalous
video display can be seen in the Compositor.
4,  The strange display (and the error messages) goes away when OpenGL is
un-selected.

Rendering:

1. The anomalous display is NOT seen in the rendered video.
2. Interestingly, even with OpenGL selected for Playback, the display in the
Compositor window appears NORMAL, during the rendering process. (But it
'goes bad' again as soon as rendering finishes.)

Now that I know about the driver dependency, I can live with this but.  (But
will certainly help to gather evidence if anybody is trying to work the
issue.)

Thanks again!

-----Original Message-----
From: Johannes Sixt [mailto:[EMAIL PROTECTED] 
Sent: Saturday, November 22, 2008 1:24 PM
To: [email protected]
Cc: John Detwiler
Subject: Re: [CinCV] bad image - and errors - with 'projector automation'

On Samstag, 22. November 2008, John Detwiler wrote:
> I'm trying to do 'picture in picture', but the projected image seems to
> be clipped and/or folded.  Cinelerra is also throwing errors.
>
> Attached are three screenshots:
>
> 1. test pattern with 'normal' projector settings (X=0.0, Y=0.0, Z=1.0).
> There's no problem here.
>
> 2. same test pattern with 70% size, located in upper right corner.
> Notice that the image appears 'clipped', and does not reach the corner
> (although the wireframe does go to the corner).
>
> 3. same test pattern, 70% size, located in lower left corner.  Notice
> that the image appears 'folded' (or 'reflected') into the top of the
> frame.
>
> This behavior is the same whether the image is a still (.png) or a movie
> (.dv)

Did you try to render these settings? Does the error appear also in the 
rendered result?

Which output driver are you using. I guess X11-OpenGL. Try with X11-XV and 
X11. Do the errors still happen?

> The error being thrown to the console is...
>
> ===begin dump===
> Mesa 7.0.3 implementation error: User called no-op dispatch function (an
> unsupported extension function?)
> Please report at bugzilla.freedesktop.org
> ===end dump===

I've no clue about this one. But from this I assume you are using
X11-OpenGL.

-- Hannes


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