Hi Brede, My goal isn't to load Openflight files as fast as possible but to convert them in IVE file format using the least memory consumption as possible, ie not reading useless texture.
I think it will be great for the community to bring this change, don't you ? I will try (as soon as I have time to work on) to modify the plugin to only read the filenames from the texture palette and store them instead of storing texture images. Later, when finding a face using a texture, load the corresponding image. I don't want to create a specific program with Multigen API to modify Openflight models because I think the first solution to improve the plugin is best for the OSG-users and for me of wourse ;-). Kind regards, 2010/3/3 Brede Johansen <bre...@gmail.com> > Hi Alexandre, > > On Wed, Mar 3, 2010 at 11:50 AM, Alexandre Amalric > <alex.pix...@gmail.com> wrote: > > Maybe that the original author from this plugin can tell me if the > texture > > palette record has to be read or not, so we may decide to skip it. > > > > I'm the original author of the OpenFlight reader, the write capability > was later added by Paul. > > You have to read the texture palette record but you can delay the > loading of textures until they are actually used by a face or mesh. > But it would require some modifications to the loader as others have > already explained. > > Having said that, I want to add that OpenFlight is not a runtime > format made for fast loading. Also, the OpenFlight loader was not > made with fast load times in mind but rather to preserve the structure > and information in the flt file. > > Gordon wrote this on this mailing list a long time ago: > > The problem with the OpenFlight format along with most other Modeling > formats is that they contain a lot of information that the Modeling package > contains and needs and has to support a wide range of uses, Packages, 3d > API > packages etc. But the runtime API typically does not need most of the > information > So really there is not too much you can do to speed up the reading of an > OpenFlight file, there are some things you can do such as combine textures > into one texture ( there are tools in Creator to do this etc) etc. but the > gain will not be that great. > All 3d APIs have there own binary format that is more or less a binary dump > of the tree ( yes I know they are more than that), thus the native binary > format is always nearly faster than using a native modeling format such as > OpenFlight, Geo, 3ds, Max etc.. > That's why OSG has IVE, Vega had FST, Vega Prime has VSB, Performer has PFB > etc.. > > So if you want fast loading convert (osgconv) your OpenFlight files to > ive or the new binary osg format. > > > Regards, > Brede > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- Alexandre AMALRIC Ingénieur R&D =================================== PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr
_______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
