How do I unset a vertex buffer?

[drewcrawford]

In the MDN docs, vertex buffers can be unset:

A GPUBuffer representing the buffer containing the vertex data to use for subsequent drawing commands, or null, in which case any previously-set buffer in the given slot is unset.

How do I do this in wgpu? The equivalent function seems to take a non-optional value.

[ErichDonGubler]

I've got good news, and I've got bad news.

The good news is that we should have an Optional buffer argument. The bad news is that it is not currently optional, but we'd sure like it to be. PRs welcome!

Just filed an issue to track this; I'm mildly incredulous we didn't have it before, though perhaps my search skills failed me: #7354