ReleaseDracoAttribute(DracoAttribute **attr);
// Returns the DracoAttribute at index in mesh. On input, attribute must be
// null. The returned attr must be released with ReleaseDracoAttribute.
[DllImport("dracodec_unity")] private static extern bool GetAttribute(
DracoMesh *mesh, int index, DracoAttribute **attr);
// Release data associated with DracoAttribute.
[DllImport("dracodec_unity")] private static extern void ReleaseDracoAttribute(DracoAttribute **attr);
GetAttributeByUniqueId(DracoMesh *mesh, int unique_id,
DracoAttribute **attr);
// Returns the DracoAttribute with unique_id in mesh. On input, attribute
// must be null.The returned attr must be released with
// ReleaseDracoAttribute.
[DllImport("dracodec_unity")] private static extern bool GetAttributeByUniqueId(DracoMesh *mesh, int unique_id, DracoAttribute **attr);
// Returns the DracoAttribute of type at index in mesh. On input, attribute
// must be null. E.g. If the mesh has two texture coordinates then
// GetAttributeByType(mesh, AttributeType.TEX_COORD, 1, &attr); will return
// the second TEX_COORD attribute. The returned attr must be released with
// ReleaseDracoAttribute.
[DllImport(DRACODEC_UNITY_LIB)] private static extern bool GetAttributeByType(
DracoMesh *mesh, AttributeType type, int index, DracoAttribute **attr);
// Returns the DracoAttribute at index in mesh. On input, attribute must be
// null. The returned attr must be released with ReleaseDracoAttribute.
[DllImport(DRACODEC_UNITY_LIB)] unsafe static extern bool GetAttribute(
DracoMesh *mesh, int index, DracoAttribute **attr);
private static extern bool GetAttributeByType(
DracoMesh *mesh, AttributeType type, int index, DracoAttribute **attr);
private static extern bool GetAttribute(
DracoMesh *mesh, int index, DracoAttribute **attr);
