[Webkit-unassigned] [Bug 240865] [GTK] Webpages completely slow down when CSS blur filter is in use

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=240865

--- Comment #4 from Carlos Garcia Campos <cgarcia at igalia.com> ---
Created attachment 462701

  --> https://bugs.webkit.org/attachment.cgi?id=462701&action=review

Test case

There are two files in the tarball:

- test-cpu.html: it has several images with blur filter. It's slow, it's easier to reproduce by resizing the window rather than just scrolling.

- test-gpu: it's the same but adding a translateZ transform to force the images to be accelerated. Performance is much better, but there are two issues:
 + Rendering is ot the same as the sofotware version, it looks like pixelated.
 + Images disappear when scrolling and they aren't rendered anymore even if the window is resized.

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