stylo: Enable multiple color arguments in `color-mix()` by Loirooriol · Pull Request #43890 · servo/servo

Loirooriol · 2026-04-03T06:59:12Z

Bumps Stylo to servo/stylo#348

Testing: 2 WPT improve

github-actions · 2026-04-03T06:59:28Z

🔨 Triggering try run (#23937407330) for Linux (WPT)

github-actions · 2026-04-03T07:42:09Z

Test results for linux-wpt from try job (#23937407330):

Flaky unexpected result (35)

OK /IndexedDB/idbdatabase_deleteObjectStore.any.html (#43823)
- PASS [expected FAIL] subtest: Deleted object store's name should be removed from database's list. Attempting to use a deleted IDBObjectStore should throw an InvalidStateError
TIMEOUT [expected OK] /_mozilla/mozilla/img_find_non_sibling_map.html
CRASH [expected OK] /_webgl/conformance/glsl/misc/struct-nesting-of-variable-names.html
CRASH [expected OK] /_webgl/conformance2/buffers/buffer-copying-restrictions.html

ERROR [expected CRASH] /_webgl/conformance2/textures/misc/tex-3d-size-limit.html (#42881)

PASS [expected FAIL] subtest: WebGL test #1

FAIL [expected PASS] subtest: WebGL test #3

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : texImage3D should fail for dimension out of range. expected true got false

FAIL [expected PASS] subtest: WebGL test #4

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : texImage3D should fail for dimension out of range. expected true got false

FAIL [expected PASS] subtest: WebGL test #5

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : texImage3D should fail for dimension out of range. expected true got false

FAIL [expected PASS] subtest: WebGL test #6

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : texImage3D should fail for dimension out of range. expected true got false

FAIL [expected PASS] subtest: WebGL test #7

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : texImage3D should fail for dimension out of range. expected true got false

FAIL [expected PASS] subtest: WebGL test #8

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : texImage3D should fail for dimension out of range. expected true got false

FAIL [expected PASS] subtest: WebGL test #9

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : texImage3D should fail for dimension out of range. expected true got false

FAIL [expected PASS] subtest: WebGL test #10

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : texImage3D should fail for dimension out of range. expected true got false

FAIL [expected PASS] subtest: WebGL test #11

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : texImage3D should fail for dimension out of range. expected true got false

And 27 more unexpected results...

OK /beacon/beacon-basic.https.window.html (#41723)
- FAIL [expected PASS] subtest: Payload size restriction should be accumulated: type = string
```
assert_false: expected false got true
```
FAIL [expected PASS] /css/css-backgrounds/background-size-042.html
OK /css/css-shadow/font-face-009.html
- FAIL [expected PASS] subtest: @font-face from shadow applies to to :host::before/::after.
```
assert_greater_than: expected a number greater than 160 but got 105
```
OK [expected ERROR] /fetch/fetch-later/quota/same-origin-iframe/sandboxed-iframe.https.window.html (#41704)
ERROR [expected OK] /fetch/metadata/window-open.https.sub.html (#40339)
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.html (#29049)
- PASS [expected FAIL] subtest: Same-origin navigation started from unload handler must be ignored
OK /html/browsers/history/the-history-interface/traverse_the_history_3.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
OK /html/browsers/history/the-history-interface/traverse_the_history_4.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
CRASH [expected OK] /html/browsers/the-window-object/window-open-noopener.html?_top
TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html (#28259)
- TIMEOUT [expected FAIL] subtest: Autofocus elements in top-level browsing context's documents with empty fragments should work.
```
Test timed out
```
OK /html/semantics/document-metadata/the-meta-element/pragma-directives/attr-meta-http-equiv-refresh/allow-scripts-flag-changing-2.html (#39703)
- FAIL [expected PASS] subtest: Meta refresh of the original iframe is not blocked if moved into a sandboxed iframe
```
uncaught exception: Error: assert_unreached: The iframe into which the meta was moved must not refresh Reached unreachable code
```
TIMEOUT [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_navigate_other_frame_popup.sub.html (#39702)
- TIMEOUT [expected FAIL] subtest: Sandboxed iframe can not navigate other frame's popup
```
Test timed out
```
OK /html/semantics/forms/form-submission-0/jsurl-form-submit.tentative.html (#36489)
- PASS [expected FAIL] subtest: Verifies that form submissions scheduled inside javascript: urls take precedence over the javascript: url's return value.
CRASH [expected ERROR] /html/semantics/forms/the-select-element/customizable-select/select-appearance-button-after-span.html

OK /html/semantics/scripting-1/the-script-element/execution-timing/077.html (#22139)

FAIL [expected PASS] subtest: adding several types of scripts through the DOM and removing some of them confuses scheduler

assert_array_equals: expected property 1 to be "Script #1 ran" but got "Script #3 ran" (expected array ["Script #2 ran", "Script #1 ran", "Script #3 ran", "Script #4 ran"] got ["Script #2 ran", "Script #3 ran", "Script #4 ran", "Script #1 ran"])

OK /html/semantics/scripting-1/the-script-element/module/dynamic-import/blob-url.any.worker-module.html (#43510)
- FAIL [expected PASS] subtest: Revoking a blob URL immediately after calling import will not fail
```
promise_test: Unhandled rejection with value: object "TypeError: Module fetching failed"
```
OK /mixed-content/tentative/autoupgrades/mixed-content-cors.https.sub.html (#41123)
- PASS [expected FAIL] subtest: Cross-Origin video should get upgraded even if CORS is set
PASS [expected FAIL] /png/apng/acTL-plays-two.html (#41191)
FAIL [expected PASS] /png/apng/fcTL-dispose-background-final.html (#41581)
TIMEOUT [expected OK] /pointerevents/pointerup_after_pointerdown_target_removed.html?pen
OK /preload/prefetch-document.html (#37210)
- FAIL [expected PASS] subtest: different-site document prefetch with 'as=document' should not be consumed
```
assert_equals: expected 2 but got 1
```
OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?06-10 (#37920)
- PASS [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls in report-only mode.
- PASS [expected TIMEOUT] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in report-only mode.
- FAIL [expected NOTRUN] subtest: Navigate a window via anchor with javascript:-urls w/ a default policy throwing an exception in enforcing mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
- FAIL [expected NOTRUN] subtest: Navigate a window via anchor with javascript:-urls w/ a default policy throwing an exception in report-only mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
TIMEOUT /trusted-types/trusted-types-navigation.html?31-35 (#38034)
- TIMEOUT [expected PASS] subtest: Navigate a frame via form-submission with javascript:-urls in report-only mode.
```
Test timed out
```
- NOTRUN [expected TIMEOUT] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in report-only mode.
OK /visual-viewport/resize-event-order.html (#41981)
- PASS [expected FAIL] subtest: Popup: DOMWindow resize fired before VisualViewport.
OK /wasm/webapi/abort.any.worker.html (#40013)
- FAIL [expected PASS] subtest: instantiateStreaming() asynchronously racing with abort should succeed or reject with AbortError
```
assert_equals: expected "AbortError" but got "CompileError"
```
OK /webdriver/tests/classic/add_cookie/user_prompts.py
- FAIL [expected PASS] subtest: test_accept[alert-None]
```
webdriver.error.NoSuchWindowException: no such window (404): No such window
```
OK /webdriver/tests/classic/element_clear/user_prompts.py
- FAIL [expected PASS] subtest: test_accept[alert-None]
```
webdriver.error.NoSuchWindowException: no such window (404): No such window
```
OK /webdriver/tests/classic/element_click/click.py
- FAIL [expected PASS] subtest: test_null_response_value
```
webdriver.error.NoSuchWindowException: no such window (404): No such window
```
OK [expected TIMEOUT] /webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.html (#29053)
- PASS [expected TIMEOUT] subtest: StorageKey: test 3P about:blank window opened from a 3P iframe
OK [expected ERROR] /webxr/render_state_update.https.html (#27535)

Stable unexpected results that are known to be intermittent (17)

FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
- TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo
```
Test timed out
```
OK /css/css-cascade/layer-font-face-override.html (#35935)
- PASS [expected FAIL] subtest: @font-face override update with appended sheet 1
- PASS [expected FAIL] subtest: @font-face override update with appended sheet 2
OK /css/css-fonts/generic-family-keywords-001.html (#37467)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(fangsong)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(kai)
OK /css/css-fonts/generic-family-keywords-003.html (#38994)
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted cursive (drawing text in a canvas)
```
assert_equals: quoted cursive matches  @font-face rule expected 125 but got 40
```
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted fantasy (drawing text in a canvas)
```
assert_equals: quoted fantasy matches  @font-face rule expected 125 but got 40
```
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted system-ui (drawing text in a canvas)
```
assert_equals: quoted system-ui matches  @font-face rule expected 125 but got 40
```
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(fangsong) (drawing text in a canvas)
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(kai) (drawing text in a canvas)
```
assert_equals: quoted generic(kai) matches  @font-face rule expected 125 but got 40
```
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(khmer-mul) (drawing text in a canvas)
```
assert_equals: quoted generic(khmer-mul) matches  @font-face rule expected 125 but got 40
```
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(nastaliq) (drawing text in a canvas)
```
assert_equals: unquoted generic(nastaliq) does not match @font-face rule expected 40 but got 125
```
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-sans-serif (drawing text in a canvas)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-monospace (drawing text in a canvas)
ERROR [expected OK] /fetch/fetch-later/quota/same-origin-iframe/accumulated-oversized-payload.https.window.html (#41705)
OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
- PASS [expected FAIL] subtest: sec-fetch-mode
- PASS [expected FAIL] subtest: sec-fetch-dest
ERROR [expected OK] /focus/focus-event-after-switching-iframes.sub.html (#40368)
OK /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
- FAIL [expected PASS] subtest: Link with onclick navigation and href navigation
```
assert_equals: expected "href" but got "click"
```
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html (#20768)
- PASS [expected FAIL] subtest: Tests that a fragment navigation in the unload handler will not block the initial navigation

OK /html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html (#28697)

FAIL [expected PASS] subtest: aElement.click() before the load event must NOT replace

assert_equals: expected "http://web-platform.test:8000/common/blank.html?thereplacement" but got "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/code-injector.html?pipe=sub(none)&amp;code=%0A%20%20%20%20const%20a%20%3D%20document.createElement(%22a%22)%3B%0A%20%20%20%20a.href%20%3D%20%22%2Fcommon%2Fblank.html%3Fthereplacement%22%3B%0A%20%20%20%20document.currentScript.before(a)%3B%0A%20%20%20%20a.click()%3B%0A%20%20"

CRASH [expected TIMEOUT] /html/browsers/history/the-location-interface/location_replace_session_history.html (#41896)
OK /html/semantics/document-metadata/the-meta-element/pragma-directives/attr-meta-http-equiv-refresh/allow-scripts-flag-changing-1.html (#39694)
- PASS [expected FAIL] subtest: Meta refresh is blocked by the allow-scripts sandbox flag at its creation time, not when refresh comes due
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- PASS [expected FAIL] subtest: Reload domComplete > Original domComplete
- PASS [expected FAIL] subtest: Reload domInteractive > Original domInteractive
- PASS [expected FAIL] subtest: Reload fetchStart > Original fetchStart
- PASS [expected FAIL] subtest: Reload loadEventEnd > Original loadEventEnd
- PASS [expected FAIL] subtest: Reload loadEventStart > Original loadEventStart
TIMEOUT [expected OK] /preload/modulepreload-sri-importmap.html (#43354)
- TIMEOUT [expected PASS] subtest: Script should not be loaded if modulepreload's integrity is invalid
```
Test timed out
```
OK [expected CRASH] /resource-timing/render-blocking-status-link.html (#41664)
OK /resource-timing/test_resource_timing.html (#25720)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (img)

Stable unexpected results (2)

OK /css/css-color/parsing/color-computed-color-mix-function.html
- PASS [expected FAIL] subtest: Property color value 'color-mix(in srgb, red)'
- PASS [expected FAIL] subtest: Property color value 'color-mix(in srgb, red 50%)'
- PASS [expected FAIL] subtest: Property color value 'color-mix(in srgb, red, green, blue)'
- PASS [expected FAIL] subtest: Property color value 'color-mix(in srgb, red 50%, green 30%, blue 20%)'
- PASS [expected FAIL] subtest: Property color value 'color-mix(in srgb, red 30%, green 60%, blue 90%)'
- PASS [expected FAIL] subtest: Property color value 'color-mix(in srgb, red, green, blue, white)'
OK /css/css-color/parsing/color-valid-color-mix-function.html
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in srgb, red)" should set the property value
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in srgb, red 100%)" should set the property value
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in srgb, red 50%)" should set the property value
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in srgb, red, green, blue)" should set the property value
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in hsl, red, green, blue)" should set the property value
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in srgb, red 50%, green 30%, blue 20%)" should set the property value
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in srgb, red 30%, green 60%, blue 90%)" should set the property value
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in srgb, red 50%, green, blue)" should set the property value
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in srgb, red, green 25%, blue 25%)" should set the property value
- PASS [expected FAIL] subtest: e.style['color'] = "color-mix(in srgb, red, green, blue, white)" should set the property value
- And 1 more unexpected results...

github-actions · 2026-04-03T07:42:16Z

⚠️ Try run (#23937407330) failed!

Firefox has enabled it by default. Servo PR: servo/servo#43890 Fixes #339. Signed-off-by: Oriol Brufau <obrufau@igalia.com>

Signed-off-by: Oriol Brufau <obrufau@igalia.com>

Loirooriol added T-linux-wpt Do a try run of the WPT dependencies Pull requests that update a dependency file labels Apr 3, 2026

github-actions Bot removed the T-linux-wpt Do a try run of the WPT label Apr 3, 2026

Loirooriol mentioned this pull request Apr 3, 2026

Enable multiple color arguments in color-mix() servo/stylo#348

Merged

mrobinson approved these changes Apr 3, 2026

View reviewed changes

github-merge-queue Bot pushed a commit to servo/stylo that referenced this pull request Apr 7, 2026

Enable multiple color arguments in color-mix() (#348)

d038149

Firefox has enabled it by default. Servo PR: servo/servo#43890 Fixes #339. Signed-off-by: Oriol Brufau <obrufau@igalia.com>

Loirooriol force-pushed the color-mix-multi-color branch from a66f0ea to 9393738 Compare April 7, 2026 13:39

github-merge-queue Bot pushed a commit to servo/stylo that referenced this pull request Apr 7, 2026

Enable multiple color arguments in color-mix() (#348)

ddf2109

Firefox has enabled it by default. Servo PR: servo/servo#43890 Fixes #339. Signed-off-by: Oriol Brufau <obrufau@igalia.com>

stylo: Enable multiple color arguments in color-mix()

4c20650

Signed-off-by: Oriol Brufau <obrufau@igalia.com>

Loirooriol force-pushed the color-mix-multi-color branch from 9393738 to 4c20650 Compare April 7, 2026 13:43

mrobinson approved these changes Apr 7, 2026

View reviewed changes

Loirooriol marked this pull request as ready for review April 7, 2026 14:08

servo-highfive added the S-awaiting-review There is new code that needs to be reviewed. label Apr 7, 2026

Loirooriol added this pull request to the merge queue Apr 7, 2026

servo-highfive added the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Apr 7, 2026

Merged via the queue into servo:main with commit 0615c39 Apr 7, 2026
33 checks passed

Loirooriol deleted the color-mix-multi-color branch April 7, 2026 14:58

servo-highfive removed the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Apr 7, 2026

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stylo: Enable multiple color arguments in `color-mix()`#43890

stylo: Enable multiple color arguments in `color-mix()`#43890
Loirooriol merged 1 commit into
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Loirooriol:color-mix-multi-color

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edited

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Loirooriol commented Apr 3, 2026 •

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