dd996a3289
forcing users to use osgDB::readRef*File() methods. The later is preferable as it closes a potential threading bug when using paging databases in conjunction
with the osgDB::Registry Object Cache. This threading bug occurs when one thread gets an object from the Cache via an osgDB::read*File() call where only
a pointer to the object is passed back, so taking a reference to the object is delayed till it gets reassigned to a ref_ptr<>, but at the same time another
thread calls a flush of the Object Cache deleting this object as it's referenceCount is now zero. Using osgDB::readREf*File() makes sure the a ref_ptr<> is
passed back and the referenceCount never goes to zero.
To ensure the OSG builds when OSG_PROVIDE_READFILE is to OFF the many cases of osgDB::read*File() usage had to be replaced with a ref_ptr<> osgDB::readRef*File()
usage. The avoid this change causing lots of other client code to be rewritten to handle the use of ref_ptr<> in place of C pointer I introduced a serious of
templte methods in various class to adapt ref_ptr<> to the underly C pointer to be passed to old OSG API's, example of this is found in include/osg/Group:
bool addChild(Node* child); // old method which can only be used with a Node*
tempalte<class T> bool addChild(const osg::ref_ptr<T>& child) { return addChild(child.get()); } // adapter template method
These changes together cover 149 modified files, so it's a large submission. This extent of changes are warrent to make use of the Object Cache
and multi-threaded loaded more robust.
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@15164 16af8721-9629-0410-8352-f15c8da7e697
454 lines
21 KiB
C++
454 lines
21 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGDB_READFILE
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#define OSGDB_READFILE 1
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#include <string>
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#include <osg/Node>
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#include <osg/Image>
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#include <osg/ArgumentParser>
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#include <osgDB/Export>
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#include <osgDB/Registry>
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namespace osgDB {
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/** Read an osg::Object from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::ref_ptr<osg::Object> readRefObjectFile(const std::string& filename,const Options* options);
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/** Read an osg::Object from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::Object> readRefObjectFile(const std::string& filename)
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{
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return readRefObjectFile(filename, Registry::instance()->getOptions());
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}
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template<class T>
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inline osg::ref_ptr<T> readRefFile(const std::string& filename, const Options* options)
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{
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osg::ref_ptr<osg::Object> object = readRefObjectFile(filename, options);
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osg::ref_ptr<T> t = dynamic_cast<T*>(object.get());
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return t;
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}
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template<class T>
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inline osg::ref_ptr<T> readRefFile(const std::string& filename)
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{
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return readRefFile<T>(filename, Registry::instance()->getOptions());
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}
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/** Read an osg::Image from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::ref_ptr<osg::Image> readRefImageFile(const std::string& filename,const Options* options);
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/** Read an osg::Image from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::Image> readRefImageFile(const std::string& filename)
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{
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return readRefImageFile(filename,Registry::instance()->getOptions());
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}
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/** Read an osg::HeightField from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::ref_ptr<osg::HeightField> readRefHeightFieldFile(const std::string& filename,const Options* options);
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/** Read an osg::HeightField from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::HeightField> readRefHeightFieldFile(const std::string& filename)
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{
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return readRefHeightFieldFile(filename,Registry::instance()->getOptions());
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}
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/** Read an osg::Node from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::ref_ptr<osg::Node> readRefNodeFile(const std::string& filename,const Options* options);
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/** Read an osg::Node from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::Node> readRefNodeFile(const std::string& filename)
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{
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return readRefNodeFile(filename,Registry::instance()->getOptions());
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}
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/** Read an osg::Node subgraph from files, creating a osg::Group to contain the nodes if more
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* than one subgraph has been loaded.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* Does NOT ignore strings beginning with a dash '-' character. */
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extern OSGDB_EXPORT osg::ref_ptr<osg::Node> readRefNodeFiles(std::vector<std::string>& fileList,const Options* options);
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/** Read an osg::Node subgraph from files, creating a osg::Group to contain the nodes if more
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* than one subgraph has been loaded.*/
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inline osg::ref_ptr<osg::Node> readRefNodeFiles(std::vector<std::string>& fileList)
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{
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return readRefNodeFiles(fileList, Registry::instance()->getOptions());
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}
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/** Read an osg::Node subgraph from files, creating a osg::Group to contain the nodes if more
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* than one subgraph has been loaded.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.*/
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extern OSGDB_EXPORT osg::ref_ptr<osg::Node> readRefNodeFiles(osg::ArgumentParser& parser,const Options* options);
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/** Read an osg::Node subgraph from files, creating a osg::Group to contain the nodes if more
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* than one subgraph has been loaded.*/
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inline osg::ref_ptr<osg::Node> readRefNodeFiles(osg::ArgumentParser& parser)
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{
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return readRefNodeFiles(parser,Registry::instance()->getOptions());
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}
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/** Read an osg::Shader from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::ref_ptr<osg::Shader> readRefShaderFile(const std::string& filename,const Options* options);
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/** Read an osg::Shader from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::Shader> readRefShaderFile(const std::string& filename)
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{
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return readRefShaderFile(filename, Registry::instance()->getOptions());
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}
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/** Read an osg::Shader from file and set to specified shader type.
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* Return valid osg::Shader on success,
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* return NULL on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::Shader> readRefShaderFile(osg::Shader::Type type, const std::string& filename, const Options* options)
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{
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osg::ref_ptr<osg::Shader> shader = readRefShaderFile(filename, options);
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if (shader.valid() && type != osg::Shader::UNDEFINED) shader->setType(type);
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return shader;
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}
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/** Read an osg::Shader from file and set to specified shader type
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* Return valid osg::Shader on success,
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* return NULL on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::Shader> readRefShaderFile(osg::Shader::Type type, const std::string& filename)
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{
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return readRefShaderFile(type, filename, Registry::instance()->getOptions());
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}
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/** Read an osg::Shader from file and set to specified shader type, if a shader isn't loaded fallback to specific shader source.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::Shader> readRefShaderFileWithFallback(osg::Shader::Type type, const std::string& filename, const Options* options, const char* fallback)
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{
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osg::ref_ptr<osg::Shader> shader = readRefShaderFile(filename, options);
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if (shader.valid() && type != osg::Shader::UNDEFINED) shader->setType(type);
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if (!shader) shader = new osg::Shader(type, fallback);
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return shader;
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}
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/** Read an osg::Shader from file and set to specified shader type, if a shader isn't loaded fallback to specific shader source.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::Shader> readRefShaderFileWithFallback(osg::Shader::Type type, const std::string& filename, const char* fallback)
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{
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return osgDB::readRefShaderFileWithFallback(type, filename, Registry::instance()->getOptions(), fallback);
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}
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/** Read an osg::Script from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::ref_ptr<osg::Script> readRefScriptFile(const std::string& filename,const Options* options);
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/** Read an osg::Script from file.
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* Return an assigned osg::ref_ptr on success,
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* return an osg::ref_ptr with a NULL pointer assigned to it on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::ref_ptr<osg::Script> readRefScriptFile(const std::string& filename)
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{
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return readRefScriptFile(filename,Registry::instance()->getOptions());
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}
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#ifdef OSG_PROVIDE_READFILE
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/** Read an osg::Object from file.
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* Return valid osg::Object on success,
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* return NULL on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::Object* readObjectFile(const std::string& filename,const Options* options);
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/** Read an osg::Object from file.
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* Return valid osg::Object on success,
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* return NULL on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::Object* readObjectFile(const std::string& filename)
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{
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return readObjectFile(filename, Registry::instance()->getOptions());
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}
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template<typename T>
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inline T* readFile(const std::string& filename, const Options* options)
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{
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osg::ref_ptr<osg::Object> object = readRefObjectFile(filename, options);
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osg::ref_ptr<T> t = dynamic_cast<T*>(object.get());
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object = 0;
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return t.release();
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}
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template<typename T>
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inline T* readFile(const std::string& filename)
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{
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return readFile<T>(filename, Registry::instance()->getOptions());
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}
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/** Read an osg::Image from file.
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* Return valid osg::Image on success,
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* return NULL on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::Image* readImageFile(const std::string& filename,const Options* options);
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/** Read an osg::Image from file.
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* Return valid osg::Image on success,
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* return NULL on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::Image* readImageFile(const std::string& filename)
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{
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return readImageFile(filename,Registry::instance()->getOptions());
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}
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/** Read an osg::HeightField from file.
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* Return valid osg::HeightField on success,
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* return NULL on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::HeightField* readHeightFieldFile(const std::string& filename,const Options* options);
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/** Read an osg::HeightField from file.
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* Return valid osg::HeightField on success,
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* return NULL on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::HeightField* readHeightFieldFile(const std::string& filename)
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{
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return readHeightFieldFile(filename,Registry::instance()->getOptions());
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}
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/** Read an osg::Node from file.
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* Return valid osg::Node on success,
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* return NULL on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::Node* readNodeFile(const std::string& filename,const Options* options);
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/** Read an osg::Node from file.
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* Return valid osg::Node on success,
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* return NULL on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::Node* readNodeFile(const std::string& filename)
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{
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return readNodeFile(filename,Registry::instance()->getOptions());
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}
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/** Read an osg::Node subgraph from files, creating a osg::Group to contain the nodes if more
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* than one subgraph has been loaded.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* Does NOT ignore strings beginning with a dash '-' character. */
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extern OSGDB_EXPORT osg::Node* readNodeFiles(std::vector<std::string>& fileList,const Options* options);
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/** Read an osg::Node subgraph from files, creating a osg::Group to contain the nodes if more
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* than one subgraph has been loaded.*/
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inline osg::Node* readNodeFiles(std::vector<std::string>& fileList)
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{
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return readNodeFiles(fileList,Registry::instance()->getOptions());
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}
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/** Read an osg::Node subgraph from files, creating a osg::Group to contain the nodes if more
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* than one subgraph has been loaded.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.*/
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extern OSGDB_EXPORT osg::Node* readNodeFiles(osg::ArgumentParser& parser,const Options* options);
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/** Read an osg::Node subgraph from files, creating a osg::Group to contain the nodes if more
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* than one subgraph has been loaded.*/
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inline osg::Node* readNodeFiles(osg::ArgumentParser& parser)
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{
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return readNodeFiles(parser,Registry::instance()->getOptions());
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}
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/** Read an osg::Shader from file.
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* Return valid osg::Shader on success,
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* return NULL on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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extern OSGDB_EXPORT osg::Shader* readShaderFile(const std::string& filename,const Options* options);
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/** Read an osg::Shader from file.
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* Return valid osg::Shader on success,
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* return NULL on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::Shader* readShaderFile(const std::string& filename)
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{
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return readShaderFile(filename,Registry::instance()->getOptions());
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}
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/** Read an osg::Shader from file and set to specified shader type.
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* Return valid osg::Shader on success,
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* return NULL on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::Shader* readShaderFile(osg::Shader::Type type, const std::string& filename,const Options* options)
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{
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osg::Shader* shader = readShaderFile(filename, options);
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if (shader && type != osg::Shader::UNDEFINED) shader->setType(type);
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return shader;
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}
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/** Read an osg::Shader from file and set to specified shader type
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* Return valid osg::Shader on success,
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* return NULL on failure.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::Shader* readShaderFile(osg::Shader::Type type, const std::string& filename)
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{
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return readShaderFile(type, filename,Registry::instance()->getOptions());
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}
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/** Read an osg::Shader from file and set to specified shader type, if a shader isn't loaded fallback to specific shader source.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
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* for the filename extension, and this plugin then handles the request
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* to read the specified file.*/
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inline osg::Shader* readShaderFileWithFallback(osg::Shader::Type type, const std::string& filename, const Options* options, const char* fallback)
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{
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osg::Shader* shader = readShaderFile(filename, options);
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if (shader && type != osg::Shader::UNDEFINED) shader->setType(type);
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if (!shader) shader = new osg::Shader(type, fallback);
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return shader;
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}
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/** Read an osg::Shader from file and set to specified shader type, if a shader isn't loaded fallback to specific shader source.
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
|
|
* for the filename extension, and this plugin then handles the request
|
|
* to read the specified file.*/
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inline osg::Shader* readShaderFileWithFallback(osg::Shader::Type type, const std::string& filename, const char* fallback)
|
|
{
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return osgDB::readShaderFileWithFallback(type, filename, Registry::instance()->getOptions(), fallback);
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}
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/** Read an osg::Script from file.
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* Return valid osg::Script on success,
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* return NULL on failure.
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* Use the Options object to control cache operations and file search paths in osgDB::Registry.
|
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
|
|
* for the filename extension, and this plugin then handles the request
|
|
* to read the specified file.*/
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extern OSGDB_EXPORT osg::Script* readScriptFile(const std::string& filename,const Options* options);
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/** Read an osg::Script from file.
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* Return valid osg::Script on success,
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* return NULL on failure.
|
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* The osgDB::Registry is used to load the appropriate ReaderWriter plugin
|
|
* for the filename extension, and this plugin then handles the request
|
|
* to read the specified file.*/
|
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inline osg::Script* readScriptFile(const std::string& filename)
|
|
{
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|
return readScriptFile(filename,Registry::instance()->getOptions());
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}
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#endif
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}
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#endif
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