Hi Adrian,
Also make sure that you are compiling with a release build as this
makes a huge difference to performance.
Also considering using osgViewer's support for DrawThreadPerContext,
as this can hide the cost of a long cull traversal very effectively on
dual core machines.
Robert.
On 5/16/07, Adrian Egli <[EMAIL PROTECTED]> wrote:
Many thanks robert.
so i will switch of
osgUtil::GLObjectsVisitor:
> :SWITCH_OFF_VERTEX_BUFFER_OBJECTS
VBO
:-)
2007/5/16, Robert Osfield <[EMAIL PROTECTED]>:
> Hi Adrian,
>
> Performance optimization is a huge and complex topic. I'm not going
> to go into it now, search the archives.
>
> W.r.t VBO's vs display lists, I find VBO's slower for big complex
> models. Model with a small number of osg::Geometry which are all
> large work well with VBO, while models with a
> large number of osg::Geometry which all are small work best with display
lists.
>
> Robert.
>
> On 5/16/07, Adrian Egli <[EMAIL PROTECTED] > wrote:
> > hi
> >
> > It got some probleme in opening of huge 3D database files (IVE format).
At
> > the moment the file is first time displayed whe have to
> > check for 2 different cases:
> >
> > (1) case would be: the whole file content (scene) is displayed: we
rotate
> > the camera, move the camera and so on, no probleme, the fps stay
constant.
> > on my carte 10fps, you see quite huge
> > file.
> >
> > (2) the camera is in the center of the file, and only a small part of
the
> > scene is display: we do same thing manipluating the camera, our movement
is
> > not yet fluid. once we have displayed
> > the whole file once, part by part the scene is greate working. is there
a
> > problem in transfering datas to the GPU? buffered object, better to use
> > displaylist?
> >
> >
> > i am using:
> >
> >
m_sceneView->setDefaults(mode|osgUtil::SceneView::COMPILE_GLOBJECTS_AT_INIT);
> >
> >
> >
((osgUtil::GLObjectsVisitor*)m_sceneView->getInitVisitor())->setMode(
> >
> >
((osgUtil::GLObjectsVisitor*)m_sceneView->getInitVisitor())->getMode()|
> >
> >
osgUtil::GLObjectsVisitor::SWITCH_ON_VERTEX_BUFFER_OBJECTS
> >
);
> >
> >
> > regards
> > adegli
> >
> >
> > _______________________________________________
> > osg-users mailing list
> > [email protected]
> > http://openscenegraph.net/mailman/listinfo/osg-users
> > http://www.openscenegraph.org/
> >
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