r	name
0	'vertex'
1	'blendWeights'
2	'normal'
3	'colour'
4	'secondary_colour'
5	'blendIndices'
6	'uv0'
7	'uv1'
8	'uv2'
9	'uv3'
10	'uv4'
11	'uv5'
12	'uv6'
13	'uv7'
14	'tangent'
15	'binormal'