Editorial review: Update docs for Chrome 137 WebGPU additions

[chrisdavidmills]

---

Description

Chrome 137 supports the following WebGPU updates:

• When using copyBufferToBuffer(), you can omit the offsets and the size parameter when copying the entire buffer. See https://developer.chrome.com/blog/new-in-webgpu-137?hl=en#buffers_copy_without_specifying_offsets_and_size.
• When creating a GPUBindGroup using createBindGroup(), you can specify a GPUTextureView in place of a GPUExternalTexture. See https://developer.chrome.com/blog/new-in-webgpu-137?hl=en#use_texture_view_for_externaltexture_binding

This PR updates the docs to include details of both.

Motivation

Additional details

Related issues and pull requests

[github-actions]

Preview URLs

• /en-US/docs/Web/API/GPUCommandEncoder/copyBufferToBuffer
• /en-US/docs/Web/API/GPUDevice/createBindGroup

External URLs (1)

URL: /en-US/docs/Web/API/GPUCommandEncoder/copyBufferToBuffer
Title: GPUCommandEncoder: copyBufferToBuffer() method

• https://mdn.github.io/dom-examples/webgpu-compute-demo/ (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2025-06-03 08:19:22)

[beaufortfrancois]

LGTM with nit

[chrisdavidmills]

Do you mind giving this one an editorial review, @hamishwillee? It's a really tiny one.

[hamishwillee]

The spec says description does not indicate that size is optional in https://gpuweb.github.io/gpuweb/#commands-buffer-copies , but does indicate it in the IDL https://gpuweb.github.io/gpuweb/#gpucommandencoder

So, I think that there are two options, one for copying the whole buffer from 0, and one for copying part of the buffer from 0. I think the note below is still fine though, because it refers to copying the whole buffer.
Might be worth some comment on this case with size though.

Suggested change

	copyBufferToBuffer(source, destination)
	copyBufferToBuffer(source, destination)
	copyBufferToBuffer(source, destination, size)

[chrisdavidmills]

Yeah, good call. I had grokked this, but I wasn't sure it needed to be said. I think you are right, though; it's good to be explicit about all possible cases.

I've added the case to the syntax and added an explanation to the note.

I also tested this case to make sure it works.

[hamishwillee]

The docs if fine modulo any changes coming out of https://github.com/mdn/content/pull/39732/files#r2122324375

This looks like a BCD change right? I.e. previously this was not supported?
Can you link the BCD entry?

[chrisdavidmills]

This looks like a BCD change right? I.e. previously this was not supported? Can you link the BCD entry?

Yes. BCD entry is at mdn/browser-compat-data#26935.

[hamishwillee]

Looks good thanks!