Method openFileStream

OgreMain/src/OgreRoot.cpp:975–985

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    }
    //---------------------------------------------------------------------
    DataStreamPtr Root::openFileStream(const String& filename, const String& groupName)
    {
        DataStreamPtr ret;
        if(auto rgm = ResourceGroupManager::getSingletonPtr())
            ret = rgm->openResource(filename, groupName, NULL, false);

        if(ret)
            return ret;

        return _openFileStream(filename, std::ios::in | std::ios::binary);
    }
    //-----------------------------------------------------------------------
    RenderWindow* Root::getAutoCreatedWindow(void)
    {