The shader needs to receive a sampler uniform containing the integer value of a texture unit to use.
The right way to do this would be to scan the subgraph of the model for state sets containing enabled texture units. Use a node visitor here. For each of these texture units, create a uniform value containing the texture unit and attach it to the model's state. It might be a bit of a pain to write a shader for all kinds of different textures and multitexturing modes though. There is a tool that might be able to assist you here. So far this isn't integrated into OSG. ShaderGen https://github.com/mojocorp/ShaderGen Christian 2015-01-27 13:50 GMT+01:00 Chris Hidden <ch...@erghis.com>: > Ok so now back to the original intent with this question. > > So I can now attach a texture to my hand model with a vertex and fragment > shader, which is great! I load the texture via its file path and send it > along to the shaders. > > However I was hoping to find a way to do this in a different workflow. I > have been and would like to continue to do a fair amount of the texture > work in 3D Studio Max. So when I export an FBX model and load it into the > scene graph it under "normal" circumstances retains its embedded texture > and displays accordingly. > > Is there a way I can access these textures for the FBX model, so that I > could in some way load the texture directly from the model. > > So if I have > osg::ref_ptr<osg::Node> model = osgDB::readNodeFile("myModel.fbx); > > Then I would like to acheive this somehow (Pseudo Code): > > osg::ref_ptr<osg::Texture2D> texture = model->GetEmbeddeFBXTexture(); > > That way we could have a nice system that will take whatever our designers > or modelers texture the model with directly through the code instead of > having to manually switch in the code later on. > > Im sure this can be done one way or another. Is there a somewhat simple > approach to this? > Thank you! > > Cheers, > Chris > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=62492#62492 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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