Hi Robert,
the problem is here:
if
(osgDB::Registry::instance()->loadLibrary(pluginLib)==osgDB::Registry::LOADED)
return findWrapper(name);
return NULL;
The loadLibrary() returns PREVIOUSLY_LOADED and not LOADED.
So NULL gets returned instead of a wrapper pointer and thus the node doesn't
get exported.
Or am I on the wrong search path?
I try exporting my scene into an .osgx file by calling:
osg::ref_ptr<osgDB::ReaderWriter>rw=osgDB::Registry::instance()->getReaderWriterForExtension(
osgDB::getLowerCaseFileExtension(_filename.toStdString()));
if(!rw.valid()) returnfalse; osgDB::ReaderWriter::WriteResultresult=rw->writeNode(_node,_filename.toStdString());
result.success() is true.
It creates a file containing only the outer xml header and no scene data. node
is of type osg::group
Am 21.03.2017 um 14:42 schrieb Robert Osfield:
Hi Werner,
I can't work out what might be wrong form the description.
In general the ObjectWrapperManager::findWrapper() checks wrappers
that have been registered with it first, then if it fails to find one
then attempts to load plugins that may be able to provide that
wrapper. If the code is getting to the find return then it's an
indication that the wrapper has been found. Given this the
ObjectWrapperManager::findWrapper() code looks correct.
This review would suggest that the issue is likely elsewhere. What
might be wrong is not something I can say at this stage. Would it be
possible create a test case that reproduces the problem so others can
look into it?
Robert.
On 21 March 2017 at 13:15, Werner Modenbach <werner.modenb...@texion.eu> wrote:
Hi Robert,
I think I catched another problem in version 3.4.0.
I try exporting my scene as .osgx file.
But except the xml header nothing is written.
I debuged it and found the following sequence of calls:
osg::ref_ptr<osgDB::ReaderWriter> rw =
osgDB::Registry::instance()->getReaderWriterForExtension(
osgDB::getLowerCaseFileExtension(_filename.toStdString()));
if (!rw.valid())
return false;
osgDB::ReaderWriter::WriteResult result = rw->writeNode(_node,
_filename.toStdString());
-> ReaderWriterOSG2::writeNode(...)
result = writeNode( node, fout, local_opt.get() );
-> ReaderWriterOSG2::writeNode(...)
os.writeObject( &node ); CATCH_EXCEPTION(os);
-> OutputStream::writeObject(...)
if (newID)
{
writeObjectFields(obj);
}
-> OutputStream::writeObjectFields(...)
ObjectWrapper* wrapper =
Registry::instance()->getObjectWrapperManager()->findWrapper( name );
if ( !wrapper )
{
OSG_WARN << "OutputStream::writeObject(): Unsupported wrapper class
"
<< name << std::endl;
return;
}
-> OutputStream::writeObjectFields(...)
ObjectWrapper* wrapper =
Registry::instance()->getObjectWrapperManager()->findWrapper( name );
if ( !wrapper )
{
OSG_WARN << "OutputStream::writeObject(): Unsupported wrapper class
"
<< name << std::endl;
return;
}
-> ObjectWrapperManager::findWrapper(...)
pluginLib =
osgDB::Registry::instance()->createLibraryNameForExtension(libName);
if (
osgDB::Registry::instance()->loadLibrary(pluginLib)==osgDB::Registry::LOADED
)
return findWrapper(name);
}
return NULL;
The loadLibrary(...) method returns "PREVIOUSLY_LOADED" and so NULL is
returned and nothing gets written.
I think that should be different. Am I right?
- Werner -
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