Import a large document in the demo, click the enlarge button, the page content is not clear

[QM36]

Configuration:
Web browser and its version: chrome & firefox
Operating system and its version: chrome(88.0.4324.96) firefox(84.0.2)
Operating system and its version: macOS Catalina 10.15.7
PDF.js version: the latest(here are the logs)

What is the expected behavior? (add screenshot)

What went wrong? (add screenshot)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):
生理学—10.神经系统.pdf

Thanks for your reply, I would like to know under what circumstances the blur will appear. By the way, are there any restrictions on pdf.js, and where are the restrictions in the code?

[Snuffleupagus]

PDF.js version: the latest(here are the logs)

Again, you should provide an actual version number here, since "latest" can mean any number of things.

I would like to know under what circumstances the blur will appear.

It's related to the maxCanvasPixels value, since CSS zooming occurs above that threshold to prevent huge canvases (similar to your previous issue #12495).

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This issue is, for all intents and purposes, a duplicate of #6419.

[QM36]

Sorry forgot to paste my commit record, here are the logs