private StreamIO getBufferStream(GltfAccessor accessor)
{
GltfBufferView bufferView = _root.BufferViews[accessor.BufferView.Value];
GltfBuffer buffer = _root.Buffers[bufferView.Buffer];
StreamIO stream = new StreamIO(_chunk.GetBytes(0, buffer.ByteLength));
stream.Position = bufferView.ByteOffset + accessor.ByteOffset;
return(stream);
}