[osg-users] Texturing issues second window

Scott Angster Scott.R.Angster at nasa.gov
Tue Jul 29 06:09:43 PDT 2008

We are seeing the texture problem in the additional windows for simple
objects, ones that are not using paged LOD.  It definitely seems to be
related to the contexts but can't find the right settings to get it to
work.  What is strange is that, like I mentioned before, if we create
the sphere and texture it internally, it works fine.  But if I load a
sphere with a texture on it, it will have problems in the second/third
windows, giving the invalid enumerant error.

Thanks again.


On Mon, 2008-07-28 at 16:38 +0200, Serge Lages wrote:
> Hi Scott,
> Have you setted the pager to not unref images after applying them ?
> When you have multiple contexts, you have to make sure images are not
> deleted before each context has applied it.
> On Mon, Jul 28, 2008 at 4:12 PM, Scott Angster
> <Scott.R.Angster at nasa.gov> wrote:
>         Hello-
>         We are seeing an interesting problem that we can not track
>         down.
>         Several previous postings have been similar but not quite what
>         we are
>         seeing.  We are hoping someone can point us in a possible
>         direction to
>         find a solution.
>         We have an OSG/QT application using multiple windows with
>         views into the
>         same scene graph.  We use multiple instances of the Viewer to
>         do this.
>         We are seeing issues in the second/third/etc window for models
>         loaded in
>         containing textures.  The textures do not load and we get
>         "Warning:
>         detected OpenGL error 'invalid enumerant' after applying
>         attribute
>         Texture2D" when the second window is opened.
>         However if we create an object at runtime, say a sphere, and
>         apply a
>         texture to it, the second/third/etc window do not have
>         problems with it.
>         If we save out the node we created to an IVE file and reload
>         it, the
>         problem is there.
>         I have tried to duplicate this problem using the osgviewer QT
>         example
>         such that I have a simpler code base to work with, and I
>         can't.  I have
>         made this example more complex, adding features to it to
>         replicate our
>         code (HUD, textured background, our update loop for updating
>         dynamic
>         transform nodes and camera positioning, our state settings,
>         thread
>         settings, etc).
>         We seem to have an issue with PagedLOD too in our application
>         for the
>         second/third windows.  I hope this issue is related so if we
>         focus on
>         the texture problem, maybe the other will be solved.
>         We are using OSG 2.4 and currently QT 3.3 (hope to be moving
>         to 4.X
>         soon).  We are seeing this on both our Linux and Windows
>         machines.
>         Thanks for any suggestions or insight into this.
>         Scott
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> -- 
> Serge Lages
> http://www.tharsis-software.com
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