Reference to external .bin buffer

According to the GLB specification a .glb can reference one BIN chunk that will be embedded in the GLB file as well as other buffers specified with a uri field.

Is there any way to do this using this library? As far as I can tell there is no way to create a Buffer that specifies a uri. I’d be willing to contribute this functionality, but just want to make sure this is indeed not possible today.

The case I am trying to solve is that I am creating multiple .glb files that should (among other things) reference the same .bin file.

[christjt]

That sounds like a good solution, I am not quite sure what that would look like in practice though.

For my specific case I am leveraging the gpu instancing extension and I have multiple assets that share multiple instances of a sub-mesh. And this is indeed to limit the memory footprint.

If you are able to scope out the task I might be able to implement some of it.

[vpenades]

@RagingKore SharpGLTF does use System.Text.Json internally for performance.

The idea of using Newtonsoft instead is because what you want is to blindly load the Json into a json DOM, preserving all the original nodes, and adding/removing elements by editing the DOM itself. Buffer and BufferView entries are simple enough to do so without altering the rest of the glTF document.

Actually, if I would be me, I would add this feature that way, because doing so within SharpGLTF architecture would overcomplicate things in the serializer.