Re: [csswg-drafts] [css-color-hdr] How should multiple layered elements with different `dynamic-range-limit` values behave? (#11307)

The CSS Working Group just discussed ``[css-color-hdr] How should multiple layered elements with different `dynamic-range-limit` values behave?``, and agreed to the following:

* `RESOLVED: modify spec text as discussed, to try and flesh out if there are blocking compositor issues in implementations; possibly add an appendix of test cases and blocking issues with platform limitations`

<details><summary>The full IRC log of that discussion</summary>
&lt;jcraig> weinig: for multiple layered elements, need more added to clarifying the model underlying what this property actually does<br>
&lt;jcraig> uses tone map example<br>
&lt;jcraig> s/map example/map compositing example to explain compositor controlling whether this is additional headroom/<br>
&lt;jcraig> ChrisL: we have a brief section on compositing... would be good to get better text<br>
&lt;jcraig> weinig: understanding what implementors would like to apply here would be useful<br>
&lt;jcraig> and the constraints of existing compositors<br>
&lt;jcraig> Said: the dynamic range limit is cascading, correct?<br>
&lt;jcraig> weinig: inherited but overridden by an explicit defining on higher specificity<br>
&lt;jcraig> simon: yes, agreed at F2F that these are not multipliers<br>
&lt;jcraig> ChrisL: should be documented, possibly in an appendix...<br>
&lt;jcraig> easy to write something that looks great from a color theory perspective but may not be implementable<br>
&lt;jcraig> PROPOSAL: modify spec text as discussed, to try and flesh out if there are blocking compositor issues in implementations; possibly add an appendix of test cases and blocking issues<br>
&lt;jcraig> weinig: WPT is lacking here because the color space can be modified<br>
&lt;jcraig> ChrisL: and WPT is limited to sRGB<br>
&lt;jcraig> s/PROPOSAL: modify spec text as discussed, to try and flesh out if there are blocking compositor issues in implementations; possibly add an appendix of test cases and blocking issues/PROPOSAL: modify spec text as discussed, to try and flesh out if there are blocking compositor issues in implementations; possibly add an appendix of test cases and blocking issues with platform limitations/<br>
&lt;jcraig> RESOLVED: modify spec text as discussed, to try and flesh out if there are blocking compositor issues in implementations; possibly add an appendix of test cases and blocking issues with platform limitations<br>
&lt;jcraig> weinig: I will take that issue<br>
</details>


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Received on Wednesday, 26 February 2025 20:32:13 UTC