Represents a GLTF accessor. GLTFAccessor is a data structure representing GLTF a [code]accessor[/code] that would be found in the [code]"accessors"[/code] array. A buffer is a blob of binary data. A buffer view is a slice of a buffer. An accessor is a typed interpretation of the data in a buffer view. Most custom data stored in GLTF does not need accessors, only buffer views (see [GLTFBufferView]). Accessors are for more advanced use cases such as interleaved mesh data encoded for the GPU. https://github.com/KhronosGroup/glTF-Tutorials/blob/master/gltfTutorial/gltfTutorial_005_BuffersBufferViewsAccessors.md $DOCS_URL/tutorials/io/runtime_file_loading_and_saving.html The index of the buffer view this accessor is referencing. If [code]-1[/code], this accessor is not referencing any buffer view.