[Libreoffice-bugs] [Bug 134237] Soft edge feature produces lag when scrolling (and mouse-scrolling to zoom) multiple high-resolution images in Draw

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=134237

--- Comment #22 from mwtjunkmail at gmail.com ---
(In reply to Luboš Luňák from comment #21)
> I've improved the Skia performance problems with zooming with
> https://git.libreoffice.org/core/+/
> 3d37d591377fe532fc0d32e9fbc8e57b8ded6768%5E%21 , but I'm fairly certain that
> the actual performance and drawing problems here come from the soft edge
> feature I linked above.

I think you're on to something there. I set the soft edges to the three images
on my test document to 0, then tried:

1. hardware rendering
2. Skia 
3. Force Skia Software Rending

and by far the fastest was (2). No artifacts and fast.
Good catch.

So does that mean we can look at
https://bugs.documentfoundation.org/show_bug.cgi?id=134213 now?  :)

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