vector layer: dropping index buffer?

[adam-ce]

would it be feasible, data amount wise, to drop the index buffer and repeat the vertex data instead? this would kill one indirection and could speed up rendering significantly

Lucas thinks:
it might be possible, but I think once I increase the line width, we might have problems even now with blowing up the size of the index buffer. So while it is probably a good idea to at least test this out, I think this way of improving the performance should only be done once everything else is working and only the performance has to be optimized