HI Yefei, The OSG has support for removing duplicate state on an already loaded scene graph, but at present there isn't any support in the .ive format for pooling imagery/texture between sets of .ive files. The later feature would be very useful though... so please feel free to dive in and implement it :-)
The next question is... how would one go about it. Perhaps a custom state pool Node that does nothing more than hold a map of names/ID to StateAttribute. Then you could save this node out to it's own .ive file, then each of the other .ive files could include this StatePool node as an external file reference. Then use the Registry cache to make sure that each of the separate .ive then reuse the same StatePool. Finally the .ive plugin would need to have some kinda of ID system to pull the apprpriate attribute from the current StatePool(s). Robert. On Tue, Mar 31, 2009 at 7:07 PM, Yefei He <y...@nads-sc.uiowa.edu> wrote: > Hi, Folks, > > If I create a flt file that uses compressed .dds files as textures, > and then convert the flt file to ive format with the option > "-O noTexturesInIVEFile", do I still get compressed texture when loading > the ive file? Reading through the source code, it seems to indicate that > the internal texture format is preserved by the dds loader as compressed > texture, and passed on to the osg core. So I assume it works. > > I have thought of converting the flt files that uses compressed > textures to ive files with built-in texture and with one of the compressed > texture options. But in my set up I use multiple flt files that share > textures, and I'm not sure if with built-in textures in ive files, I will > have multiple instances of the same texture loaded into memory, so instead > of one uncompressed texture in memory, I may end up with 20 compressed > texture of identical content in memory. Is this what's going to happen > with ive files with built-in textures? > > Thanks, > > Yefei > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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