Add buffer_data_with_u16_array to WebGlRenderingContext

[chinedufn]

Right now there's a buffer_data_with_u8_array which is super convenient if you want o use WebGLRenderingContext::UNSIGNED_BYTE.

However, UNSIGNED_SHORT is probably more common, so buffer_data_with_u16_array would be super useful IMO.

Any reason that this shouldn't exist?

If not - I'd be happy to add it if you can point me in the right direction!

[alexcrichton]

I believe that method is defined here which we expand here to an ArrayBuffer and a &mut [u8]. In theory any typed array can be accepted here but we just don't expand to all typed arrays, just a few. We could perhaps though add an &[u16] though!

Another option is #811 to create a Uint16Array from a &[u16] instance and then hand off the ArrayBuffer

[chinedufn]

Thanks for the help - I'll send a PR for option 1. I'm assuming that nothing needs to be tested here but let me know if that isn't the case!

Thanks!!

[chinedufn]

I ended up going with this approach -> #918 (comment)