Hi Enrique,
osgViewer needs to be linked in for the graphics context to be
constructed. The CMakeLists.txt file in osgdem does include the
osgViewer reference so should be pulled in.
Luigi has made some mods to the CMakeLists.txt for Windows build so
perhaps these might help you.
Robert.
On 7/12/07, Enrique Parodi <[EMAIL PROTECTED]> wrote:
Hi all.
I have a problem using VirtualTerrainBuilder when i try to generate a
terrain with textures. I have used the <new> osgdem source code as example
and i get the following error:
> Error: In Texture::Extensions::setupGLExtensions(..)
OpenGL version test failed, requires valid graphics context.
> Scaling image 'model_L0_X0_Y0.dds' from (256,256) to (0,0)
>
Then it crashes.
I have done some tests and the class MyGraphicsContext provided in osgdem
never gets realized. In the code:
> MyGraphicsContext() {
> osg::ref_ptr<osg::GraphicsContext::Traits>
traits = new osg::GraphicsContext::Traits;
>
> ...
>
> _gc =
osg::GraphicsContext::createGraphicsContext( traits.get());
>
> if (!_gc)
> {
> osg::notify(osg::NOTICE)<<"Failed to
create pbuffer, failing back to normal graphics window."<<std::endl;
>
> traits->pbuffer = false;
> _gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
> }
>
> if (_gc.valid())
> {
> _gc->realize();
> _gc->makeCurrent();
> std::cout<<"Realized window"<<std::endl;
> }
> }
>
When the constructor ends, the _gc.valid() stills false, so it never gets
realized. The old osgdem used the Producer::RenderSurface object to do the
same, but i would like to use the osg 2.0 approach in my next project.
I have not found a way to build my terrain with textures. With elevation
data i have no problem.
If you have any clue please let me know... Thanks to all in advance.
--
Enrique...
_______________________________________________
osg-users mailing list
osg-users@openscenegraph.net
http://openscenegraph.net/mailman/listinfo/osg-users
http://www.openscenegraph.org/
_______________________________________________
osg-users mailing list
osg-users@openscenegraph.net
http://openscenegraph.net/mailman/listinfo/osg-users
http://www.openscenegraph.org/
