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I you are new to the OSG and OpenGL then might I recommend just moving to learning modern scene graph and low level like the OSG's successor VulkanSceneGraph and with it Vulkan.

I tried the dance.fbx model with osgviewer and just get black model, but it loads just fine with vsgivewer, even the lighting and shadows are easier to set up than OSG. The VSG even correctly orientates the FBX model.

vsgshadow dance.fbx --direction 1 1 -1 --sm 3 -n 2 --dc

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Thank you for your advice, In my business, I want to render fbx's animation by osg, so the fbx's skeleton animation support is importent for me; After some research in vsg's doc, I don't see the animation support, does it support skeleton animation now?
@robertosfield thank you

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You are correct, the VSG doesn't yet have skeleton animation support provided in the core VulkanSceneGraph/vsgXchange. The vsgopenmw will have it so it's technically possible, it's just not provided by the core VSG itself yet.

My intention is to add animation support into the default PBR and Phong shader sets and the vsgXchange::assimp loader this year, but other members of the community are welcome to tackle it before I do. When it is implemented it'll be fully supported by the shaders so users will get a more coherent and better performing experience than the OSG itself can provide.

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ok, I saw the vsg's Tutorials doc, It's a great work. I'll use it to redo my work when the skel animation supported. thankyou very much!

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For old liners :) have a look at osgverse:
https://github.com/xarray/osgverse

It supports FBX and GLTF, and can load and handle character animations from GLTF format (and FBX soon).

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