HI Katharina, In the svn/trunk version of the OSG I added support for overriding the find file operation using an osgDB::FindFileCallback, that you attach to the osgDB::Registry or an osgDB::Options object. Perhaps this would be the best way for you to intercept and do something special when texture files are not found.
Cheers, Robert. On Mon, Sep 21, 2009 at 1:49 PM, Katharina Plugge <[email protected]> wrote: > Hello, > > the OpenFlight-Plugin prevents reacting on missing Textures via a > ReadFileCallback, because osgDB::readRefImageFile (called by function > readTexture) is not called if the file does not exist. Would be great if this > could be changed. > > A fix could look like this (file PaletteRecords.cpp, line 436): > > Code: > > virtual void readRecord(RecordInputStream& in, Document& document) > { > if (document.getTexturePoolParent()) > // Using parent's texture pool -- ignore this record. > return; > > int maxLength = (document.version() < VERSION_14) ? 80 : 200; > std::string filename = in.readString(maxLength); > int32 index = in.readInt32(-1); > /*int32 x =*/ in.readInt32(); > /*int32 y =*/ in.readInt32(); > > osg::StateSet* stateset = NULL; > // Need full path for unique key in local texture cache. > std::string pathname = > osgDB::findDataFile(filename,document.getOptions()); > if (pathname.empty()) > { > // allow the aplication to react on missing texture via > ReadFileCallback > stateset = readTexture(filename,document); > if( !stateset) > { > osg::notify(osg::WARN) << "Can't find texture (" << index << > ") " << filename << std::endl; > return; > } > } > else > { > // Is texture in local cache? > osg::StateSet* stateset = > flt::Registry::instance()->getTextureFromLocalCache(pathname); > } > > // Read file if not in cache. > if (!stateset) > { > stateset = readTexture(pathname,document); > > // Add to texture cache. > > flt::Registry::instance()->addTextureToLocalCache(pathname,stateset); > } > > // Add to texture pool. > TexturePool* tp = document.getOrCreateTexturePool(); > (*tp)[index] = stateset; > } > > > > > Thank you! > > Greetings, > Katharina[/code] > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=17525#17525 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
