2033174 - fix testing/web-platform/tests/jpegxl/resources/conformance_alpha_nonpremultiplied.jxl to not contain unspec'ed behaviour

Status: RESOLVED FIXED

(Core :: Graphics: ImageLib, task)

Comment 1

[Timothy Nikkel (:tnikkel)]

Attachment: Bug 2033174. Fix testing/web-platform/tests/jpegxl/resources/conformance_alpha_nonpremultiplied.jxl to not contain unspec'ed behaviour. r?saschanaz,#gfx-reviewers

After talking to jpegxl developer, the color channels in this file contain values that go about the 0..1 range. Since the image ha alpha then the question is if the proper way to handle that is to blend the color and alpha and then clip the result, or clip the color values first and then blend with the alpha. According to the jpegxl developers the spec does not say what to do. This test is intended to test basic functionality, not unspec'ed edge cases, so the fix is to change the test file so that that color channels stay within 0..1. The update test file was provided to me by jpegxl developers.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/ada20067f3d1
https://hg.mozilla.org/integration/autoland/rev/52eedb14f09e
Fix testing/web-platform/tests/jpegxl/resources/conformance_alpha_nonpremultiplied.jxl to not contain unspec'ed behaviour. r=saschanaz

Comment 3

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/52eedb14f09e

Comment 4

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/59374 for changes under testing/web-platform/tests

Comment 5

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Upstream PR merged by moz-wptsync-bot