922766 - Slow SVG filters on bz's testcase

Status: RESOLVED FIXED

(Core :: SVG, defect)

Description

[(no longer active)]

Drag the right panda over the left one.  We jank when the images intersect.

Here's the profile: <http://people.mozilla.org/~bgirard/cleopatra/?customProfile=http://people.mozilla.org/~eakhgari/profiles/svg>

Comment 1

[Markus Stange [:mstange]]

All filter perf bugs are mine.

Comment 2

[Markus Stange [:mstange]]

This was mostly fixed by bug 876321. We still jank when the moved layer starts overlapping the still image, though. Bug 924103 has reduced the jank somewhat but it's still noticeable.

So the remaining thing to do here is to find out why the moved layer gets repainted on overlap.

Comment 3

[Markus Stange [:mstange]]

(In reply to Markus Stange [:mstange] from comment #2)
> So the remaining thing to do here is to find out why the moved layer gets
> repainted on overlap.

This happens because of bug 1136304 - while the layers don't intersect, the movable one pulls a white background color from the page background, but it can't do that while the layers intersect. It shouldn't pull up the background color in the first place.

Comment 4

[Markus Stange [:mstange]]

I think we can call this fixed.