Interpolate between CSS filter() and cached images

[Dirk Schulze]

During a discussion with Simon on IRC, he mentioned that he would like to have an interpolation where the first entry is a cached-image and the second is a filter function with the same cached image as input (and the other way around).

As example:

from:
background-image: url(image.png);

to:
background-image: filter(url(image.png), blur(3px));

Right now, it is just possible to interpolate between two CSS images of the same type (as specified).

We should think about it more. Right now we just have url() as a cached or native image. According to the spec, url() should be replaced by image(). Image doesn't make it impossible to determine if the filtered image is the same as the cached image we want to animate to. The problem that I see is that people then will demand filter(gradient(), blur()) to gradient. And when we have that, the filter(cross-fade()) to filter(url()) or even filter(crossfade(url(image1), url(image2), 50%), blur(3px)) to image1.

Nothing is impossible, but we should keep the complexity of that in mind.

[Dirk Schulze]

Created attachment 210654 [details]
Patch

[Dirk Schulze]

Created attachment 210655 [details]
Patch

Forgot to add change to expected result.

[WebKit Commit Bot]

Comment on attachment 210655 [details]
Patch

Rejecting attachment 210655 [details] from commit-queue.

Failed to run "['/Volumes/Data/EWS/WebKit/Tools/Scripts/webkit-patch', '--status-host=webkit-queues.appspot.com', '--bot-id=webkit-cq-01', 'apply-attachment', '--no-update', '--non-interactive', 210655, '--port=mac']" exit_code: 2 cwd: /Volumes/Data/EWS/WebKit

Last 500 characters of output:
t 1 with fuzz 3.
patching file Source/WebCore/page/animation/CSSPropertyAnimation.cpp
Hunk #1 succeeded at 177 (offset 3 lines).
Hunk #2 succeeded at 197 (offset 3 lines).
Hunk #3 succeeded at 206 (offset 3 lines).
Hunk #4 succeeded at 216 (offset 3 lines).
Hunk #5 succeeded at 314 (offset 3 lines).
Hunk #6 succeeded at 330 (offset 3 lines).

Failed to run "[u'/Volumes/Data/EWS/WebKit/Tools/Scripts/svn-apply', '--force', '--reviewer', u'Simon Fraser']" exit_code: 1 cwd: /Volumes/Data/EWS/WebKit

Full output: http://webkit-queues.appspot.com/results/1708418

[Dirk Schulze]

Created attachment 210783 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 210783 [details]
Patch

Clearing flags on attachment: 210783

Committed r155240: <http://trac.webkit.org/changeset/155240>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.