Intent to Ship: mix-blend-mode: plus-lighter
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Vladimir Levin
Jan 19, 2022, 11:40:45 AM1/19/22
to blink-dev, Khusal Sagar, Jake Archibald
Contact emails
vmp...@chromium.org, khusha...@chromium.org, jakear...@chromium.orgExplainer
https://jakearchibald.com/2021/dom-cross-fade/Specification
https://drafts.fxtf.org/compositing-2/#mix-blend-modeSummary
This proposal adds a plus-lighter value to the mix-blend-mode property. Plus-lighter adds the source and destination colors multiplied by their respective alphas. This operation is useful when cross fading between two elements that may contain common pixels. In that case, plus-lighter ensures that the common pixels do not change in appearance as opacity changes from 0 to 1 on one element and from 1 to 0 on the other.
Blink component
Blink>CSSSearch tags
plus-lighterTAG review
N/A: this is a single value addition to an existing property, and this value already exists in a canvas context, so the TAG review seemed not necessaryTAG review status
Not applicableRisks
Interoperability and Compatibility
Gecko: No signal
WebKit: Shipped/Shipping (https://github.com/w3c/fxtf-drafts/issues/445#issuecomment-995022125)
Web developers: No signals
Other signals:
Ergonomics
This adds a new value to an existing CSS property. The ergonomics risk is minimal.
Activation
This adds a new value to an existing CSS property. The activation risk is minimal. This property is straight-forward to use.
Security
There are no security risks associated with this property.
Debuggability
This relies on existing debuggability of CSS mix-blend-mode.
Is this feature fully tested by web-platform-tests?
YesRequires code in //chrome?
FalseTracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1275782Estimated milestones
M100
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5677338286096384Links to previous Intent discussions
Intent to prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CADsXd2MsbYsCV57vZ-eVQem4WUudVTGT%3Djzpib0NzezYEAMP-g%40mail.gmail.comThis intent message was generated by Chrome Platform Status.
Yoav Weiss
Jan 26, 2022, 9:42:15 AM1/26/22
to blink-dev, Vladimir Levin, Khushal Sagar, Jake Archibald
LGTM1
This seems like a useful small addition! Following WebKit here makes sense.
On Wednesday, January 19, 2022 at 5:40:45 PM UTC+1 Vladimir Levin wrote:
Mike Taylor
Jan 26, 2022, 9:50:17 AM1/26/22
to Yoav Weiss, blink-dev, Vladimir Levin, Jake Archibald
LGTM2, thanks for the very well written
explainer-slash-blog-post.
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Manuel Rego Casasnovas
Jan 26, 2022, 9:54:21 AM1/26/22
to Mike Taylor, Yoav Weiss, blink-dev, Vladimir Levin, Jake Archibald
LGTM3.
On 26/01/2022 15:50, Mike Taylor wrote:
> LGTM2, thanks for the very well written explainer-slash-blog-post.
>
> On 1/26/22 9:42 AM, Yoav Weiss wrote:
>> LGTM1
>>
>> This seems like a useful small addition! Following WebKit here makes
>> sense.
>> On Wednesday, January 19, 2022 at 5:40:45 PM UTC+1 Vladimir Levin wrote:
>>
>>
>> Contact emails
>>
>> vmp...@chromium.org, khusha...@chromium.org
>> <mailto:khusha...@chromium.org>, jakear...@chromium.org
>> <mailto:jakear...@chromium.org>
>>
>>
>> Explainer
>>
>> https://jakearchibald.com/2021/dom-cross-fade/
>>
>>
>> Search tags
>>
>> plus-lighter <https://chromestatus.com/features#tags:plus-lighter>
> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/e7c669a2-0896-9a19-948b-a8248bd9df11%40chromium.org?utm_medium=email&utm_source=footer>.
On 26/01/2022 15:50, Mike Taylor wrote:
> LGTM2, thanks for the very well written explainer-slash-blog-post.
>
> On 1/26/22 9:42 AM, Yoav Weiss wrote:
>> LGTM1
>>
>> This seems like a useful small addition! Following WebKit here makes
>> sense.
>> On Wednesday, January 19, 2022 at 5:40:45 PM UTC+1 Vladimir Levin wrote:
>>
>>
>> Contact emails
>>
>> <mailto:khusha...@chromium.org>, jakear...@chromium.org
>> <mailto:jakear...@chromium.org>
>>
>>
>> Explainer
>>
>> https://jakearchibald.com/2021/dom-cross-fade/
>> <https://jakearchibald.com/2021/dom-cross-fade/>
>>
>>
>> Specification
>>
>> https://drafts.fxtf.org/compositing-2/#mix-blend-mode
>> <https://drafts.fxtf.org/compositing-2/#mix-blend-mode>
>>
>>
>> Summary
>>
>> This proposal adds a plus-lighter value to the mix-blend-mode
>> property. Plus-lighter adds the source and destination colors
>> multiplied by their respective alphas. This operation is useful
>> when cross fading between two elements that may contain common
>> pixels. In that case, plus-lighter ensures that the common pixels
>> do not change in appearance as opacity changes from 0 to 1 on one
>> element and from 1 to 0 on the other.
>>
>>
>>
>> Blink component
>>
>> Blink>CSS
>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS>
>>
>>
>> Specification
>>
>> https://drafts.fxtf.org/compositing-2/#mix-blend-mode
>> <https://drafts.fxtf.org/compositing-2/#mix-blend-mode>
>>
>>
>> Summary
>>
>> This proposal adds a plus-lighter value to the mix-blend-mode
>> property. Plus-lighter adds the source and destination colors
>> multiplied by their respective alphas. This operation is useful
>> when cross fading between two elements that may contain common
>> pixels. In that case, plus-lighter ensures that the common pixels
>> do not change in appearance as opacity changes from 0 to 1 on one
>> element and from 1 to 0 on the other.
>>
>>
>>
>> Blink component
>>
>> Blink>CSS
>>
>>
>> Search tags
>>
>> plus-lighter <https://chromestatus.com/features#tags:plus-lighter>
>>
>>
>> TAG review
>>
>> N/A: this is a single value addition to an existing property, and
>> this value already exists in a canvas context, so the TAG review
>> seemed not necessary
>>
>>
>> TAG review status
>>
>> Not applicable
>>
>>
>> Risks
>>
>>
>>
>> Interoperability and Compatibility
>>
>>
>>
>> Gecko: No signal
>>
>> WebKit: Shipped/Shipping
>> (https://github.com/w3c/fxtf-drafts/issues/445#issuecomment-995022125
>> <https://github.com/w3c/fxtf-drafts/issues/445#issuecomment-995022125>)
>>
>> TAG review
>>
>> N/A: this is a single value addition to an existing property, and
>> this value already exists in a canvas context, so the TAG review
>> seemed not necessary
>>
>>
>> TAG review status
>>
>> Not applicable
>>
>>
>> Risks
>>
>>
>>
>> Interoperability and Compatibility
>>
>>
>>
>> Gecko: No signal
>>
>> WebKit: Shipped/Shipping
>> (https://github.com/w3c/fxtf-drafts/issues/445#issuecomment-995022125
>>
>> Web developers: No signals
>>
>> Other signals:
>>
>>
>> Ergonomics
>>
>> This adds a new value to an existing CSS property. The ergonomics
>> risk is minimal.
>>
>>
>>
>> Activation
>>
>> This adds a new value to an existing CSS property. The activation
>> risk is minimal. This property is straight-forward to use.
>>
>>
>>
>> Security
>>
>> There are no security risks associated with this property.
>>
>>
>>
>> Debuggability
>>
>> This relies on existing debuggability of CSS mix-blend-mode.
>>
>>
>>
>> Is this feature fully tested by web-platform-tests
>> <https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md>?
>> Web developers: No signals
>>
>> Other signals:
>>
>>
>> Ergonomics
>>
>> This adds a new value to an existing CSS property. The ergonomics
>> risk is minimal.
>>
>>
>>
>> Activation
>>
>> This adds a new value to an existing CSS property. The activation
>> risk is minimal. This property is straight-forward to use.
>>
>>
>>
>> Security
>>
>> There are no security risks associated with this property.
>>
>>
>>
>> Debuggability
>>
>> This relies on existing debuggability of CSS mix-blend-mode.
>>
>>
>>
>> Is this feature fully tested by web-platform-tests
>>
>> Yes
>>
>>
>> Requires code in //chrome?
>>
>> False
>>
>>
>> Tracking bug
>>
>> https://bugs.chromium.org/p/chromium/issues/detail?id=1275782
>> <https://bugs.chromium.org/p/chromium/issues/detail?id=1275782>
>>
>>
>> Estimated milestones
>>
>> M100
>>
>>
>> Link to entry on the Chrome Platform Status
>>
>> https://chromestatus.com/feature/5677338286096384
>> <https://chromestatus.com/feature/5677338286096384>
>>
>>
>> Links to previous Intent discussions
>>
>> Intent to
>> prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CADsXd2MsbYsCV57vZ-eVQem4WUudVTGT%3Djzpib0NzezYEAMP-g%40mail.gmail.com
>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CADsXd2MsbYsCV57vZ-eVQem4WUudVTGT=jzpib0Nz...@mail.gmail.com>
>> Yes
>>
>>
>> Requires code in //chrome?
>>
>> False
>>
>>
>> Tracking bug
>>
>> https://bugs.chromium.org/p/chromium/issues/detail?id=1275782
>> <https://bugs.chromium.org/p/chromium/issues/detail?id=1275782>
>>
>>
>> Estimated milestones
>>
>> M100
>>
>>
>> Link to entry on the Chrome Platform Status
>>
>> https://chromestatus.com/feature/5677338286096384
>> <https://chromestatus.com/feature/5677338286096384>
>>
>>
>> Links to previous Intent discussions
>>
>> Intent to
>> prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CADsXd2MsbYsCV57vZ-eVQem4WUudVTGT%3Djzpib0NzezYEAMP-g%40mail.gmail.com
>>
>>
>> This intent message was generated by Chrome Platform Status
>> <https://chromestatus.com/>.
>>
>> This intent message was generated by Chrome Platform Status
>>
>> --
>> You received this message because you are subscribed to the Google
>> Groups "blink-dev" group.
>> To unsubscribe from this group and stop receiving emails from it, send
>> an email to blink-dev+...@chromium.org.
>> To view this discussion on the web visit
>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/1c4ffaa4-38dd-4dca-b60c-ec0393147f2an%40chromium.org
>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/1c4ffaa4-38dd-4dca-b60c-ec0393147f2an%40chromium.org?utm_medium=email&utm_source=footer>.
>> --
>> You received this message because you are subscribed to the Google
>> Groups "blink-dev" group.
>> To unsubscribe from this group and stop receiving emails from it, send
>> an email to blink-dev+...@chromium.org.
>> To view this discussion on the web visit
>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/1c4ffaa4-38dd-4dca-b60c-ec0393147f2an%40chromium.org
>
>
> --
> You received this message because you are subscribed to the Google
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> <mailto:blink-dev+...@chromium.org>.
>
> --
> You received this message because you are subscribed to the Google
> Groups "blink-dev" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to blink-dev+...@chromium.org
> To view this discussion on the web visit
> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/e7c669a2-0896-9a19-948b-a8248bd9df11%40chromium.org
> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/e7c669a2-0896-9a19-948b-a8248bd9df11%40chromium.org?utm_medium=email&utm_source=footer>.
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