I'm am currently looking into glTF to use as a transfer format for my WebGL project. I already have the geometries I wish to render on my WebGL client available as preprocessed vertex and index buffers (and color buffers, but let's ignore them for now).

For example:

[       // vertex buffer
  0,0,0,
  0,1,0,
  1,0,0,
  1,1,0,
]

And to draw simple LINES:

[       // index buffer
  0,2,
  2,4,
  4,0,
  0,1,
  1,4,
]

I wonder how to create glTF files containing these buffers? Is this possible?

I want to avoid using COLLADA and COLLADA2GLTF as this would only add an additional step and might just bloat the resulting glTF files.

I am currently looking into glTF to use as a transfer format for my WebGL project. I already have the geometries I wish to render on my WebGL client available as preprocessed vertex and index buffers (and color buffers, but let's ignore them for now).

For example:

[       // vertex buffer
  0,0,0,
  0,1,0,
  1,0,0,
  1,1,0,
]

And to draw simple LINES:

[       // index buffer
  0,2,
  2,4,
  4,0,
  0,1,
  1,4,
]

I wonder how to create glTF files containing these buffers? Is this possible?

I want to avoid using COLLADA and COLLADA2GLTF as this would only add an additional step and might just bloat the resulting glTF files.