[HomestarRunner.com Main Page #24] Blur filter doesn't properly cover the AVM1Buttons

[TheGentleChainsaw]

Describe the bug

• Official pages:
  • https://homestarrunner.com/main/24 (updated site with self-hosted Ruffle player, though it's currently out of date by almost two months)
  • https://old.homestarrunner.com/main24.html (old-style SWF embeds, no included player)
• Direct link to SWF file: https://old.homestarrunner.com/main24.swf

This one has long been known as one of the few Ruffle compatibility gaps in old H*R content. Now it's been mostly fixed with the recently-added blur filters, the main joke of the page actually comes across now, but there are still a couple of issues. The main one is that the buttons on the left aren't being blurred at all, even though they would be in Flash Player:

Also, when trying to play this in an up-to-date web player, the blur effect is... just way off. The detail gets washed out far too much, and the radius of the blur effect gets clipped by what I'm guessing are the outside margins of the original objects underneath: (fixed already, my browser was just using an outdated build)

Expected behavior

The blur effect should apply to the entire displayed screen and shouldn't be clipped at its edges. For comparison, here's what it looks like in Flash Player:

(Ignore the lack of top-bar buttons, those are provided by external SWFs that I can't easily load in Flash Player.)

Affected platform

Browser's extension

Operating system

Windows 10

Browser

Mozilla Firefox 115

Additional information

No response

[Lord-McSweeney]

That clipping was fixed in a more recent version of Ruffle.

(web extension page)

[n0samu]

This happens because in Ruffle, setting DisplayObject.filters for an AVM1Button does not render the filter. Here is a minimal reproduction of the problem: ButtonFilterAS2.zip
The problem does not occur for AVM2Button or for movie clips.

[TheGentleChainsaw]

That clipping was fixed in a more recent version of Ruffle. (web extension page)

Yep, consistent with the latest extension build from AMO. Now we just need to sort the buttons out.