1921416 - Diffusion Studio demo https://examples.diffusion.studio/ doesnt draw anything on Nightly

Status: RESOLVED FIXED

(Core :: Graphics: WebGPU, defect)

Description

[Mayank Bansal]

Attachment: console-export-2024-9-27_14-15-48.txt

Go to https://examples.diffusion.studio/

AR: Nothing draws on the screen
See errors in the attachment.

Comment 1

[Mayank Bansal]

Attachment: about:support

Comment 2

[Erich Gubler [:ErichDonGubler] (he/him)]

EDIT: Fired off my draft too early, sorry! 😅

Comment 3

[Erich Gubler [:ErichDonGubler] (he/him)]

Notable console entries I see when I run the page myself:

• It looks like Firefox doesn't accept the sources that the application is trying to use:

  Uncaught TypeError: GPUQueue.copyExternalImageToTexture: 'source' member of GPUImageCopyExternalImage could not be converted to any of: ImageBitmap, HTMLCanvasElement, OffscreenCanvas.
  

  In this case, it's trying to use a <video>/HTMLVideoElement. This is bug 1921454.

• A WGSL shader parse error that I'm confident is bug 1829879:

  Shader '' parsing error: invalid switch value
     ┌─ wgsl:60:8
     │
  60 │   case 0:{
     │        ^ expected unsigned integer
     │
     = note: suffix the integer with a `u`: '0u'
  

Comment 4

[Erich Gubler [:ErichDonGubler] (he/him)]

Bug 1921454 has become a meta bug. This should now depend on bug 1922098, which is narrower in the scope of GPUImageCopyExternalImageSource functionality we need to add to unblock this specific case.

Comment 5

[Andy Leiserson [:aleiserson]]

The second error in comment #3 is https://github.com/gfx-rs/wgpu/issues/7369.

Comment 6

[Erich Gubler [:ErichDonGubler] (he/him)]

This seems to work now!