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-rw-r--r--testing/web-platform/tests/css/css-masking/META.yml5
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561 files changed, 14738 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-masking/META.yml b/testing/web-platform/tests/css/css-masking/META.yml
new file mode 100644
index 0000000000..7f92755b09
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/META.yml
@@ -0,0 +1,5 @@
+spec: https://drafts.fxtf.org/css-masking/
+suggested_reviewers:
+ - dirkschulze
+ - birtles
+ - tabatkins
diff --git a/testing/web-platform/tests/css/css-masking/animations/clip-interpolation.html b/testing/web-platform/tests/css/css-masking/animations/clip-interpolation.html
new file mode 100644
index 0000000000..322ebd724e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/animations/clip-interpolation.html
@@ -0,0 +1,117 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>clip interpolation</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#clip-property">
+<meta name="assert" content="clip supports animation">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.container {
+ width: 80px;
+ height: 80px;
+ background: black;
+ display: inline-block;
+ padding: 5px;
+}
+
+.container:nth-child(2n) {
+ background: green;
+}
+
+.parent {
+ clip: rect(100px, 0px, 100px, 0px);
+}
+
+.target {
+ width: 80px;
+ height: 80px;
+ display: inline-block;
+ position: absolute;
+ background: white;
+ clip: rect(0px, 100px, 0px, 100px);
+}
+</style>
+
+<body>
+<template id="target-template">
+<div class="container"><div class="target"></div></div>
+</template>
+<script>
+test_interpolation({
+ property: 'clip',
+ from: neutralKeyframe,
+ to: 'rect(20px, 20px, 20px, 20px)',
+}, [
+ {at: -1, expect: 'rect(-20px 180px -20px 180px)'},
+ {at: 0, expect: 'rect(0px 100px 0px 100px)'},
+ {at: 0.25, expect: 'rect(5px 80px 5px 80px)'},
+ {at: 0.75, expect: 'rect(15px 40px 15px 40px)'},
+ {at: 1, expect: 'rect(20px 20px 20px 20px)'},
+ {at: 2, expect: 'rect(40px -60px 40px -60px)'},
+]);
+
+test_no_interpolation({
+ property: 'clip',
+ from: 'initial',
+ to: 'rect(20px, 20px, 20px, 20px)',
+});
+
+test_interpolation({
+ property: 'clip',
+ from: 'inherit',
+ to: 'rect(20px, 20px, 20px, 20px)',
+}, [
+ {at: -1, expect: 'rect(180px -20px 180px -20px)'},
+ {at: 0, expect: 'rect(100px 0px 100px 0px)'},
+ {at: 0.25, expect: 'rect(80px 5px 80px 5px)'},
+ {at: 0.75, expect: 'rect(40px 15px 40px 15px)'},
+ {at: 1, expect: 'rect(20px 20px 20px 20px)'},
+ {at: 2, expect: 'rect(-60px 40px -60px 40px)'},
+]);
+
+test_no_interpolation({
+ property: 'clip',
+ from: 'unset',
+ to: 'rect(20px, 20px, 20px, 20px)',
+});
+
+test_interpolation({
+ property: 'clip',
+ from: 'rect(0px, 75px, 80px, 10px)',
+ to: 'rect(0px, 100px, 90px, 5px)'
+}, [
+ {at: -1, expect: 'rect(0px, 50px, 70px, 15px)'},
+ {at: 0, expect: 'rect(0px, 75px, 80px, 10px)'},
+ {at: 0.25, expect: 'rect(0px, 81.25px, 82.5px, 8.75px)'},
+ {at: 0.75, expect: 'rect(0px, 93.75px, 87.5px, 6.25px)'},
+ {at: 1, expect: 'rect(0px, 100px, 90px, 5px)'},
+ {at: 2, expect: 'rect(0px, 125px, 100px, 0px)'},
+]);
+
+test_no_interpolation({
+ property: 'clip',
+ from: 'rect(auto, auto, auto, 10px)',
+ to: 'rect(20px, 50px, 50px, auto)'
+});
+
+test_no_interpolation({
+ property: 'clip',
+ from: 'rect(auto, 0px, auto, 10px)',
+ to: 'rect(auto, 50px, 50px, auto)'
+});
+
+test_no_interpolation({
+ property: 'clip',
+ from: 'auto',
+ to: 'rect(0px, 50px, 50px, 0px)'
+});
+
+test_no_interpolation({
+ property: 'clip',
+ from: 'rect(0px, 50px, 50px, 0px)',
+ to: 'auto'
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/animations/clip-path-composition.html b/testing/web-platform/tests/css/css-masking/animations/clip-path-composition.html
new file mode 100644
index 0000000000..2275ae70a3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/animations/clip-path-composition.html
@@ -0,0 +1,189 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>clip-path composition</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<meta name="assert" content="clip-path supports animation">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<body>
+<script>
+test_composition({
+ property: 'clip-path',
+ underlying: 'circle(100px at 25px 25%)',
+ addFrom: 'circle(10px at 25px 75%)',
+ addTo: 'circle(50px at 50px center)',
+}, [
+ {at: -0.3, expect: 'circle(98px at 42.5px 107.5%)'},
+ {at: 0, expect: 'circle(110px at 50px 100%)'},
+ {at: 0.3, expect: 'circle(122px at 57.5px 92.5%)'},
+ {at: 0.6, expect: 'circle(134px at 65px 85%)'},
+ {at: 1, expect: 'circle(150px at 75px 75%)'},
+ {at: 1.5, expect: 'circle(170px at 87.5px 62.5%)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'circle(100px at 20px 20%)',
+ addFrom: 'circle(50px at 50px 50%)',
+ replaceTo: 'circle(50% at 150px 150%)',
+}, [
+ {at: -0.3, expect: 'circle(calc(195px + -15%) at 46px 46%)'},
+ {at: 0, expect: 'circle(calc(150px + 0%) at 70px 70%)'},
+ {at: 0.3, expect: 'circle(calc(105px + 15%) at 94px 94%)'},
+ {at: 0.6, expect: 'circle(calc(60px + 30%) at 118px 118%)'},
+ {at: 1, expect: 'circle(50% at 150px 150%)'},
+ {at: 1.5, expect: 'circle(calc(-75px + 75%) at 190px 190%)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'circle(farthest-side at 25px 75%)',
+ addFrom: 'circle(farthest-side at 25px 75%)',
+ addTo: 'circle(farthest-side at 50px center)',
+}, [
+ {at: 0.25, expect: 'circle(farthest-side at 25px 75%)'},
+ {at: 0.75, expect: 'circle(farthest-side at 50px 50%)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'circle(50px at 10px 20px)',
+ addFrom: 'circle(50px at 10px 20px)',
+ addTo: 'circle(farthest-side at 30px 40px)',
+}, [
+ {at: 0.25, expect: 'circle(100px at 20px 40px)'},
+ {at: 0.75, expect: 'circle(farthest-side at 30px 40px)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'ellipse(10px 20px at 30px 40px)',
+ addFrom: 'ellipse(40px 30px at 20px 10px)',
+ addTo: 'ellipse(140px 130px at 120px 110px)',
+}, [
+ {at: -0.3, expect: 'ellipse(20px 20px at 20px 20px)'},
+ {at: 0, expect: 'ellipse(50px 50px at 50px 50px)'},
+ {at: 0.3, expect: 'ellipse(80px 80px at 80px 80px)'},
+ {at: 0.6, expect: 'ellipse(110px 110px at 110px 110px)'},
+ {at: 1, expect: 'ellipse(150px 150px at 150px 150px)'},
+ {at: 1.5, expect: 'ellipse(200px 200px at 200px 200px)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'ellipse(10px 20px at 30px 40px)',
+ replaceFrom: 'ellipse(40px 30px at 20px 10px)',
+ addTo: 'ellipse(40px 30px at 20px 10px)',
+}, [
+ {at: -0.3, expect: 'ellipse(37px 24px at 11px -2px)'},
+ {at: 0, expect: 'ellipse(40px 30px at 20px 10px)'},
+ {at: 0.3, expect: 'ellipse(43px 36px at 29px 22px)'},
+ {at: 0.6, expect: 'ellipse(46px 42px at 38px 34px)'},
+ {at: 1, expect: 'ellipse(50px 50px at 50px 50px)'},
+ {at: 1.5, expect: 'ellipse(55px 60px at 65px 70px)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'ellipse(25px 75%)',
+ addFrom: 'ellipse()',
+ addTo: 'ellipse(closest-side farthest-side)',
+}, [
+ {at: 0.25, expect: 'ellipse(at 50% 50%)'},
+ {at: 0.75, expect: 'ellipse(closest-side farthest-side at 50% 50%)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'inset(20px)',
+ addFrom: 'inset(20px)',
+ addTo: 'inset(40%)',
+}, [
+ {at: -0.3, expect: 'inset(calc(46px + -12%))'},
+ {at: 0, expect: 'inset(calc(40px + 0%))'},
+ {at: 0.3, expect: 'inset(calc(34px + 12%))'},
+ {at: 0.6, expect: 'inset(calc(28px + 24%))'},
+ {at: 1, expect: 'inset(calc(20px + 40%))'},
+ {at: 1.5, expect: 'inset(calc(10px + 60%))'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'inset(1px 2px 3px 4px round 10px 20px 30px 40px / 50px 60px 70px 80px)',
+ addFrom: 'inset(1px 2px 3px 4px round 10px 20px 30px 40px / 50px 60px 70px 80px)',
+ replaceTo: 'inset(102px 104px 106px 108px round 120px 140px 160px 180px / 200px 220px 240px 260px)',
+}, [
+ {at: -0.3, expect: 'inset(-28px -26px -24px -22px round 0px 10px 30px 50px / 70px 90px 110px 130px)'},
+ {at: 0, expect: 'inset(2px 4px 6px 8px round 20px 40px 60px 80px / 100px 120px 140px 160px)'},
+ {at: 0.25, expect: 'inset(27px 29px 31px 33px round 45px 65px 85px 105px / 125px 145px 165px 185px)'},
+ {at: 0.75, expect: 'inset(77px 79px 81px 83px round 95px 115px 135px 155px / 175px 195px 215px 235px)'},
+ {at: 1, expect: 'inset(102px 104px 106px 108px round 120px 140px 160px 180px / 200px 220px 240px 260px)'},
+ {at: 1.5, expect: 'inset(152px 154px 156px 158px round 170px 190px 210px 230px / 250px 270px 290px 310px)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'inset(1px 2px round 100px 200px)',
+ addFrom: 'inset(1px 2px round 100px 200px)',
+ addTo: 'inset(101px 102px 101px 102px)',
+}, [
+ {at: -0.3, expect: 'inset(-28px -26px round 230px 460px)'},
+ {at: 0, expect: 'inset(2px 4px round 200px 400px)'},
+ {at: 0.3, expect: 'inset(32px 34px round 170px 340px)'},
+ {at: 0.6, expect: 'inset(62px 64px round 140px 280px)'},
+ {at: 1, expect: 'inset(102px 104px round 100px 200px)'},
+ {at: 1.5, expect: 'inset(152px 154px round 50px 100px)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'polygon(10px 20%, 30px 40%)',
+ addFrom: 'polygon(10px 20%, 30px 40%)',
+ addTo: 'polygon(110px 120%, 130px 140%)',
+}, [
+ {at: -0.3, expect: 'polygon(-10px 10%, 30px 50%)'},
+ {at: 0, expect: 'polygon(20px 40%, 60px 80%)'},
+ {at: 0.3, expect: 'polygon(50px 70%, 90px 110%)'},
+ {at: 0.6, expect: 'polygon(80px 100%, 120px 140%)'},
+ {at: 1, expect: 'polygon(120px 140%, 160px 180%)'},
+ {at: 1.5, expect: 'polygon(170px 190%, 210px 230%)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'polygon(evenodd, 10px 20px)',
+ addFrom: 'polygon(evenodd, 10px 20px)',
+ addTo: 'polygon(evenodd, 110px 120px)',
+}, [
+ {at: -0.3, expect: 'polygon(evenodd, -10px 10px)'},
+ {at: 0, expect: 'polygon(evenodd, 20px 40px)'},
+ {at: 0.3, expect: 'polygon(evenodd, 50px 70px)'},
+ {at: 0.6, expect: 'polygon(evenodd, 80px 100px)'},
+ {at: 1, expect: 'polygon(evenodd, 120px 140px)'},
+ {at: 1.5, expect: 'polygon(evenodd, 170px 190px)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'polygon(evenodd, 10px 20px)',
+ addFrom: 'polygon(evenodd, 10px 20px)',
+ addTo: 'polygon(nonzero, 30px 40px)',
+}, [
+ {at: 0.25, expect: 'polygon(evenodd, 20px 40px)'},
+ {at: 0.75, expect: 'polygon(30px 40px)'},
+]);
+
+test_composition({
+ property: 'clip-path',
+ underlying: 'polygon(10px 20px, 30px 40px)',
+ addFrom: 'polygon(10px 20px, 30px 40px)',
+ addTo: 'polygon(30px 40px)',
+}, [
+ {at: 0.25, expect: 'polygon(20px 40px, 60px 80px)'},
+ {at: 0.75, expect: 'polygon(30px 40px)'},
+]);
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/animations/clip-path-interpolation-001.html b/testing/web-platform/tests/css/css-masking/animations/clip-path-interpolation-001.html
new file mode 100644
index 0000000000..21c34f1f2b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/animations/clip-path-interpolation-001.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>clip-path interpolation</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<meta name="assert" content="clip-path supports animation">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.parent {
+ clip-path: circle(80% at 30% 10%);
+}
+
+.target {
+ clip-path: circle(60% at 10% 30%);
+}
+</style>
+<body>
+<script>
+test_interpolation({
+ property: 'clip-path',
+ from: neutralKeyframe,
+ to: 'circle(40% at 20% 20%)',
+}, [
+ {at: -0.3, expect: 'circle(66% at 7% 33%)'},
+ {at: 0, expect: 'circle(60% at 10% 30%)'},
+ {at: 0.3, expect: 'circle(54% at 13% 27%)'},
+ {at: 0.6, expect: 'circle(48% at 16% 24%)'},
+ {at: 1, expect: 'circle(40% at 20% 20%)'},
+ {at: 1.5, expect: 'circle(30% at 25% 15%)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'initial',
+ to: 'circle(40% at 20% 20%)',
+});
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'inherit',
+ to: 'circle(40% at 20% 20%)',
+}, [
+ {at: -0.3, expect: 'circle(92% at 33% 7%)'},
+ {at: 0, expect: 'circle(80% at 30% 10%)'},
+ {at: 0.3, expect: 'circle(68% at 27% 13%)'},
+ {at: 0.6, expect: 'circle(56% at 24% 16%)'},
+ {at: 1, expect: 'circle(40% at 20% 20%)'},
+ {at: 1.5, expect: 'circle(20% at 15% 25%)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'unset',
+ to: 'circle(40% at 20% 20%)',
+});
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'circle(100% at 0% 0%)',
+ to: 'circle(50% at 25% 25%)',
+}, [
+ {at: -0.3, expect: 'circle(115% at -7.5% -7.5%)'},
+ {at: 0, expect: 'circle(100% at 0% 0%)'},
+ {at: 0.3, expect: 'circle(85% at 7.5% 7.5%)'},
+ {at: 0.6, expect: 'circle(70% at 15% 15%)'},
+ {at: 1, expect: 'circle(50% at 25% 25%)'},
+ {at: 1.5, expect: 'circle(25% at 37.5% 37.5%)'}
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'ellipse(100% 100% at 0% 0%)',
+ to: 'ellipse(50% 50% at 25% 25%)',
+}, [
+ {at: -0.3, expect: 'ellipse(115% 115% at -7.5% -7.5%)'},
+ {at: 0, expect: 'ellipse(100% 100% at 0% 0%)'},
+ {at: 0.3, expect: 'ellipse(85% 85% at 7.5% 7.5%)'},
+ {at: 0.6, expect: 'ellipse(70% 70% at 15% 15%)'},
+ {at: 1, expect: 'ellipse(50% 50% at 25% 25%)'},
+ {at: 1.5, expect: 'ellipse(25% 25% at 37.5% 37.5%)'}
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'polygon(nonzero, 0px 0px, 25px 25px, 50px 50px)',
+ to: 'polygon(nonzero, 25px 25px, 50px 50px, 75px 75px)',
+}, [
+ {at: -0.3, expect: 'polygon(nonzero, -7.5px -7.5px, 17.5px 17.5px, 42.5px 42.5px)'},
+ {at: 0, expect: 'polygon(nonzero, 0px 0px, 25px 25px, 50px 50px)'},
+ {at: 0.3, expect: 'polygon(nonzero, 7.5px 7.5px, 32.5px 32.5px, 57.5px 57.5px)'},
+ {at: 0.6, expect: 'polygon(nonzero, 15px 15px, 40px 40px, 65px 65px)'},
+ {at: 1, expect: 'polygon(nonzero, 25px 25px, 50px 50px, 75px 75px)'},
+ {at: 1.5, expect: 'polygon(nonzero, 37.5px 37.5px, 62.5px 62.5px, 87.5px 87.5px)'}
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'polygon(evenodd, 0px 0px, 25px 25px, 50px 50px)',
+ to: 'polygon(nonzero, 25px 25px, 50px 50px, 75px 75px)',
+});
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'inset(100%)',
+ to: 'inset(120%)',
+}, [
+ {at: -0.3, expect: 'inset(94%)'},
+ {at: 0, expect: 'inset(100%)'},
+ {at: 0.3, expect: 'inset(106%)'},
+ {at: 0.6, expect: 'inset(112%)'},
+ {at: 1, expect: 'inset(120%)'},
+ {at: 1.5, expect: 'inset(130%)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'none',
+ to: 'ellipse(100% 100% at 0% 0%)',
+});
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'circle(25% at right 5% bottom 15px)',
+ to: 'circle(45% at right 25% bottom 35px)',
+}, [
+ {at: 0.25, expect: 'circle(30% at 90% calc(-20px + 100%))'},
+ {at: 0.5, expect: 'circle(35% at 85% calc(-25px + 100%))'},
+ {at: 0.75, expect: 'circle(40% at 80% calc(-30px + 100%))'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'url("/clip-source")',
+ to: 'ellipse(100% 100% at 0% 0%)',
+});
+
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/animations/clip-path-interpolation-002.html b/testing/web-platform/tests/css/css-masking/animations/clip-path-interpolation-002.html
new file mode 100644
index 0000000000..88e34b3864
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/animations/clip-path-interpolation-002.html
@@ -0,0 +1,221 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<meta charset="UTF-8">
+<title>clip-path-interpolation</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<meta name="assert" content="clip-path supports animation">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.parent {
+ clip-path: inset(10px);
+ padding: 10px;
+}
+
+.target {
+ display: inline-block;
+ width: 100px;
+ height: 100px;
+ background-color: black;
+ clip-path: inset(10px);
+}
+
+.expected {
+ background-color: green;
+}
+</style>
+<body>
+<script>
+test_interpolation({
+ property: 'clip-path',
+ from: neutralKeyframe,
+ to: 'inset(20px)',
+}, [
+ {at: -0.3, expect: 'inset(7px)'},
+ {at: 0, expect: 'inset(10px)'},
+ {at: 0.3, expect: 'inset(13px)'},
+ {at: 0.6, expect: 'inset(16px)'},
+ {at: 1, expect: 'inset(20px)'},
+ {at: 1.5, expect: 'inset(25px)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'initial',
+ to: 'inset(20px)',
+});
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'inherit',
+ to: 'inset(20px)',
+}, [
+ {at: -0.3, expect: 'inset(7px)'},
+ {at: 0, expect: 'inset(10px)'},
+ {at: 0.3, expect: 'inset(13px)'},
+ {at: 0.6, expect: 'inset(16px)'},
+ {at: 1, expect: 'inset(20px)'},
+ {at: 1.5, expect: 'inset(25px)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'unset',
+ to: 'inset(20px)',
+});
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'none',
+ to: 'circle(3px at 1px 2px)',
+});
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'circle(10px at 25px 75%)',
+ to: 'circle(50px at 50px center)'
+}, [
+ {at: -0.3, expect: 'circle(0px at 17.5px 82.5%)'}, // radius can't be negative
+ {at: 0, expect: 'circle(10px at 25px 75%)'},
+ {at: 0.3, expect: 'circle(22px at 32.5px 67.5%)'},
+ {at: 0.6, expect: 'circle(34px at 40px 60%)'},
+ {at: 1, expect: 'circle(50px at 50px 50%)'},
+ {at: 1.5, expect: 'circle(70px at 62.5px 37.5%)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'circle(farthest-side at 25px 75%)',
+ to: 'circle(farthest-side at 50px center)'
+});
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'circle(closest-side at 10px 20px)',
+ to: 'circle(farthest-side at 30px 40px)',
+});
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'circle(50px at 10px 20px)',
+ to: 'circle(farthest-side at 30px 40px)',
+});
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'ellipse(10px 20px at 25px 75px)',
+ to: 'ellipse(50px 100px at 50px 50px)',
+}, [
+ {at: -0.3, expect: 'ellipse(0px 0px at 17.5px 82.5px)'}, // radius can't be negative
+ {at: 0, expect: 'ellipse(10px 20px at 25px 75px)'},
+ {at: 0.3, expect: 'ellipse(22px 44px at 32.5px 67.5px)'},
+ {at: 0.6, expect: 'ellipse(34px 68px at 40px 60px)'},
+ {at: 1, expect: 'ellipse(50px 100px at 50px 50px)'},
+ {at: 1.5, expect: 'ellipse(70px 140px at 62.5px 37.5px)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'ellipse(closest-side farthest-side at 25px 75%)',
+ to: 'ellipse(closest-side farthest-side at 50px center)',
+});
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'ellipse(closest-side farthest-side at 10px 20px)',
+ to: 'ellipse(farthest-side closest-side at 30px 40px)',
+});
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'ellipse(50px closest-side at 10px 20px)',
+ to: 'ellipse(150px farthest-side at 30px 40px)',
+});
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'inset(20px)',
+ to: 'inset(40%)',
+}, [
+ {at: -0.3, expect: 'inset(calc(26px + -12%))'},
+ {at: 0, expect: 'inset(calc(20px + 0%))'},
+ {at: 0.3, expect: 'inset(calc(14px + 12%))'},
+ {at: 0.6, expect: 'inset(calc(8px + 24%))'},
+ {at: 1, expect: 'inset(40%)'},
+ {at: 1.5, expect: 'inset(calc(-10px + 60%))'},
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'inset(1px 2px 3px 4px round 10px 20px 30px 40px / 50px 60px 70px 80px)',
+ to: 'inset(101px 102px 103px 104px round 110px 120px 130px 140px / 150px 160px 170px 180px)',
+}, [
+ {at: -0.3, expect: 'inset(-29px -28px -27px -26px round 0px 0px 0px 10px / 20px 30px 40px 50px)'},
+ {at: 0, expect: 'inset(1px 2px 3px 4px round 10px 20px 30px 40px / 50px 60px 70px 80px)'},
+ {at: 0.3, expect: 'inset(31px 32px 33px 34px round 40px 50px 60px 70px / 80px 90px 100px 110px)'},
+ {at: 0.6, expect: 'inset(61px 62px 63px 64px round 70px 80px 90px 100px / 110px 120px 130px 140px)'},
+ {at: 1, expect: 'inset(101px 102px 103px 104px round 110px 120px 130px 140px / 150px 160px 170px 180px)'},
+ {at: 1.5, expect: 'inset(151px 152px 153px 154px round 160px 170px 180px 190px / 200px 210px 220px 230px)'},
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'inset(1px 2px round 100px 200px)',
+ to: 'inset(101px 102px 101px 102px)',
+}, [
+ {at: -0.3, expect: 'inset(-29px -28px round 130px 260px)'},
+ {at: 0, expect: 'inset(1px 2px round 100px 200px)'},
+ {at: 0.3, expect: 'inset(31px 32px round 70px 140px)'},
+ {at: 0.6, expect: 'inset(61px 62px round 40px 80px)'},
+ {at: 1, expect: 'inset(101px 102px)'},
+ {at: 1.5, expect: 'inset(151px 152px)'}, // border radius can't be negative
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'polygon(10px 20%, 30px 40%)',
+ to: 'polygon(110px 120%, 130px 140%)',
+}, [
+ {at: -0.3, expect: 'polygon(-20px -10%, 0px 10%)'},
+ {at: 0, expect: 'polygon(10px 20%, 30px 40%)'},
+ {at: 0.3, expect: 'polygon(40px 50%, 60px 70%)'},
+ {at: 0.6, expect: 'polygon(70px 80%, 90px 100%)'},
+ {at: 1, expect: 'polygon(110px 120%, 130px 140%)'},
+ {at: 1.5, expect: 'polygon(160px 170%, 180px 190%)'},
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'polygon(evenodd, 10px 20px)',
+ to: 'polygon(evenodd, 110px 120px)',
+}, [
+ {at: -0.3, expect: 'polygon(evenodd, -20px -10px)'},
+ {at: 0, expect: 'polygon(evenodd, 10px 20px)'},
+ {at: 0.3, expect: 'polygon(evenodd, 40px 50px)'},
+ {at: 0.6, expect: 'polygon(evenodd, 70px 80px)'},
+ {at: 1, expect: 'polygon(evenodd, 110px 120px)'},
+ {at: 1.5, expect: 'polygon(evenodd, 160px 170px)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'polygon(evenodd, 10px 20px)',
+ to: 'polygon(nonzero, 110px 120px)',
+});
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'polygon(evenodd, 10px 20px)',
+ to: 'polygon(110px 120px)',
+});
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'polygon(10px 20px, 30px 40px)',
+ to: 'polygon(110px 120px)',
+});
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/animations/clip-path-interpolation-shape.html b/testing/web-platform/tests/css/css-masking/animations/clip-path-interpolation-shape.html
new file mode 100644
index 0000000000..ad3e2a0bdb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/animations/clip-path-interpolation-shape.html
@@ -0,0 +1,170 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<meta charset="UTF-8">
+<title>clip-path-interpolation</title>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<meta name="assert" content="clip-path supports animation">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+html {
+ font-size: 16px;
+ font-family: Ahem;
+}
+
+.parent {
+ clip-path: shape(from -5px 5px, move to 5% 1px);
+ padding: 10px;
+}
+
+.target {
+ display: inline-block;
+ width: 100px;
+ height: 100px;
+ background-color: black;
+ clip-path: shape(from 5px 5px, line to 10px 10%);
+}
+
+.expected {
+ background-color: green;
+}
+</style>
+<body>
+<script>
+test_interpolation({
+ property: 'clip-path',
+ from: neutralKeyframe,
+ to: 'shape(from -5px 5px, line to 20px 20%)',
+}, [
+ {at: -0.3, expect: 'shape(from 8px 5px, line to 7px 7%)'},
+ {at: 0, expect: 'shape(from 5px 5px, line to 10px 10%)'},
+ {at: 0.6, expect: 'shape(from -1px 5px, line to 16px 16%)'},
+ {at: 1, expect: 'shape(from -5px 5px, line to 20px 20%)'},
+ {at: 1.5, expect: 'shape(from -10px 5px, line to 25px 25%)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'initial',
+ to: 'shape(from 8px 5px, line to 7px 7%)',
+});
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'inherit',
+ to: 'shape(from 15% 15px, move to 20% -10px)',
+}, [
+ {at: -0.3, expect: 'shape(from calc(-4.5% - 6.5px) 2px, move to 0.5% 4.3px)'},
+ {at: 0, expect: 'shape(from calc(0% - 5px) 5px, move to 5% 1px)'},
+ {at: 0.5, expect: 'shape(from calc(7.5% - 2.5px) 10px, move to 12.5% -4.5px)'},
+ {at: 1, expect: 'shape(from 15% 15px, move to 20% -10px'},
+ {at: 1.5, expect: 'shape(from calc(22.5% + 2.5px) 20px, move to 27.5% -15.5px)'},
+]);
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'unset',
+ to: 'shape(from 10px 10px, close)',
+});
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'none',
+ to: 'shape(from 10px 10px, close)',
+});
+
+test_no_interpolation({
+ property: 'clip-path',
+ from: 'shape(from 10px 10px, move to 10% 10%)',
+ to: 'shape(from 10px 10px, close)',
+});
+
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'shape(from 5% 5px, hline to 5%, vline to -5px, close)',
+ to: 'shape(from 15% 15px, hline to 25%, vline to -15px, close)',
+}, [
+ {at: -0.3, expect: 'shape(from 2% 2px, hline to -1%, vline to -2px, close)'},
+ {at: 0, expect: 'shape(from 5% 5px, hline to 5%, vline to -5px, close)'},
+ {at: 0.5, expect: 'shape(from 10% 10px, hline to 15% , vline to -10px, close)'},
+ {at: 1, expect: 'shape(from 15% 15px, hline to 25%, vline to -15px, close)'},
+ {at: 1.5, expect: 'shape(from 20% 20px, hline to 35%, vline to -20px, close)'},
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'shape(from 5% 5px, curve to 10% 10px via 0% 80px, curve to 30% 20px via 20% 50px 25% 70px)',
+ to: 'shape(from 15% 15px, curve to 20% 0px via 10% 60px, curve to 20% 30px via 30% 40px -5% 100px)',
+}, [
+ {at: -0.3, expect: 'shape(from 2% 2px, curve to 7% 13px via -3% 86px, curve to 33% 17px via 17% 53px 34% 61px)'},
+ {at: 0, expect: 'shape(from 5% 5px, curve to 10% 10px via 0% 80px, curve to 30% 20px via 20% 50px 25% 70px)'},
+ {at: 0.5, expect: 'shape(from 10% 10px, curve to 15% 5px via 5% 70px, curve to 25% 25px via 25% 45px 10% 85px)'},
+ {at: 1, expect: 'shape(from 15% 15px, curve to 20% 0px via 10% 60px, curve to 20% 30px via 30% 40px -5% 100px)'},
+ {at: 1.5, expect: 'shape(from 20% 20px, curve to 25% -5px via 15% 50px, curve to 15% 35px via 35% 35px -20% 115px)'},
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'shape(from 5% 5px, curve by 10% 10px via 0% 80px, curve by 30% 20px via 20% 50px 25% 70px)',
+ to: 'shape(from 15% 15px, curve by 20% 0px via 10% 60px, curve by 20% 30px via 30% 40px -5% 100px)',
+}, [
+ {at: -0.3, expect: 'shape(from 2% 2px, curve by 7% 13px via -3% 86px, curve by 33% 17px via 17% 53px 34% 61px)'},
+ {at: 0, expect: 'shape(from 5% 5px, curve by 10% 10px via 0% 80px, curve by 30% 20px via 20% 50px 25% 70px)'},
+ {at: 0.5, expect: 'shape(from 10% 10px, curve by 15% 5px via 5% 70px, curve by 25% 25px via 25% 45px 10% 85px)'},
+ {at: 1.5, expect: 'shape(from 20% 20px, curve by 25% -5px via 15% 50px, curve by 15% 35px via 35% 35px -20% 115px)'},
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'shape(from 5% 5px, smooth to 10% 10px via 0% 80px, smooth to 30% 20px)',
+ to: 'shape(from 15% 15px, smooth to 20% 0px via 10% 60px, smooth to 20% 30px)',
+}, [
+ {at: -0.3, expect: 'shape(from 2% 2px, smooth to 7% 13px via -3% 86px, smooth to 33% 17px)'},
+ {at: 0, expect: 'shape(from 5% 5px, smooth to 10% 10px via 0% 80px, smooth to 30% 20px)'},
+ {at: 0.5, expect: 'shape(from 10% 10px, smooth to 15% 5px via 5% 70px, smooth to 25% 25px)'},
+ {at: 1.5, expect: 'shape(from 20% 20px, smooth to 25% -5px via 15% 50px, smooth to 15% 35px)'},
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'shape(from 5% 5px, smooth by 10% 10px via 0% 80px, smooth by 30% 20px)',
+ to: 'shape(from 15% 15px, smooth by 20% 0px via 10% 60px, smooth by 20% 30px)',
+}, [
+ {at: -0.3, expect: 'shape(from 2% 2px, smooth by 7% 13px via -3% 86px, smooth by 33% 17px)'},
+ {at: 0, expect: 'shape(from 5% 5px, smooth by 10% 10px via 0% 80px, smooth by 30% 20px)'},
+ {at: 0.5, expect: 'shape(from 10% 10px, smooth by 15% 5px via 5% 70px, smooth by 25% 25px)'},
+ {at: 1.5, expect: 'shape(from 20% 20px, smooth by 25% -5px via 15% 50px, smooth by 15% 35px)'},
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'shape(from 5% 5px, arc to 15% -15px of 10px 20px, arc by 15% -5px of 30px cw rotate 30deg large, arc to 25% 20px of 10px 5px small)',
+ to: 'shape(from 15% 15px, arc to 5% -25px of 20px 30px, arc by 25% -15px of 20px cw rotate 270deg small, arc to 25% 20px of 10px 5px small cw)'
+}, [
+ {at: -0.3, expect: 'shape(from 2% 2px, arc to 18% -12px of 7px 17px ccw small, arc by 12% -2px of 33px 33px rotate -42deg cw large , arc to 25% 20px of 10px 5px ccw small)'},
+ {at: 0, expect: 'shape(from 5% 5px, arc to 15% -15px of 10px 20px, arc by 15% -5px of 30px cw rotate 30deg large, arc to 25% 20px of 10px 5px small)'},
+ {at: 0.3, expect: 'shape(from 8% 8px, arc to 12% -18px of 13px 23px ccw small, arc by 18% -8px of 27px 27px rotate 102deg cw large, arc to 25% 20px of 10px 5px ccw small )'},
+ {at: 0.5, expect: 'shape(from 10% 10px, arc to 10% -20px of 15px 25px ccw small, arc by 20% -10px of 25px rotate 150deg cw small, arc to 25% 20px of 10px 5px cw small)'},
+ {at: 1, expect: 'shape(from 15% 15px, arc to 5% -25px of 20px 30px, arc by 25% -15px of 20px rotate 270deg cw small, arc to 25% 20px of 10px 5px cw small)'},
+ {at: 1.5, expect: 'shape(from 20% 20px, arc to 0% -30px of 25px 35px ccw small, arc by 30% -20px of 15px rotate 390deg cw small, arc to 25% 20px of 10px 5px cw small)'},
+]);
+
+test_interpolation({
+ property: 'clip-path',
+ from: 'shape(from 5px -5%, hline to 10px, vline by 10rem, hline by 1vh, close, vline by 3pt)',
+ to: 'shape(from -5px 5px, hline to 20px, vline by 10%, hline by 1em, close, vline by 6pt)',
+}, [
+ {at: -0.3, expect: 'shape(from 8px calc(-6.5% - 1.5px), hline to 7px, vline by calc(-3% + 208px), hline by 5.92px, close, vline by 2.8px)'},
+ {at: 0, expect: 'shape(from 5px -5%, hline to 10px, vline by calc(0% + 160px), hline by 8.25px, close, vline by 4px)'},
+ {at: 0.6, expect: 'shape(from -1px calc(-2% + 3px), hline to 16px, vline by calc(6% + 64px), hline by 12.9px, close ,vline by 6.4px)'},
+ {at: 1, expect: 'shape(from -5px calc(0% + 5px), hline to 20px, vline by 10%, hline by 16px, close, vline by 8px)'},
+ {at: 1.5, expect: 'shape(from -10px calc(2.5% + 7.5px), hline to 25px, vline by calc(15% - 80px), hline by 19.88px, close, vline by 10px)'},
+]);
+
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/animations/mask-image-interpolation.html b/testing/web-platform/tests/css/css-masking/animations/mask-image-interpolation.html
new file mode 100644
index 0000000000..beb9c9eaab
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/animations/mask-image-interpolation.html
@@ -0,0 +1,180 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>mask-image-interpolation</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-image">
+<meta name="assert" content="mask-image supports animation">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.parent {
+ mask-image: url(../resources/blue-20.png);
+}
+.target {
+ width: 20px;
+ height: 20px;
+ display: inline-block;
+ background-color: black;
+ mask-image: url(../resources/stripes-20.png);
+}
+.expected {
+ background-color: green;
+ margin-right: 10px;
+}
+</style>
+
+<body>
+<script>
+// neutral
+test_interpolation({
+ property: 'mask-image',
+ from: neutralKeyframe,
+ to: 'url(../resources/green-20.png)',
+}, [
+ {at: -0.3, expect: 'url(../resources/stripes-20.png)'},
+ {at: 0, expect: 'url(../resources/stripes-20.png)'},
+ {at: 0.3, expect: 'url(../resources/stripes-20.png)'},
+ {at: 0.6, expect: 'url(../resources/green-20.png)'},
+ {at: 1, expect: 'url(../resources/green-20.png)'},
+ {at: 1.5, expect: 'url(../resources/green-20.png)'},
+]);
+
+// initial
+test_interpolation({
+ property: 'mask-image',
+ from: 'initial',
+ to: 'url(../resources/green-20.png)',
+}, [
+ {at: -0.3, expect: 'none'},
+ {at: 0, expect: 'none'},
+ {at: 0.3, expect: 'none'},
+ {at: 0.6, expect: 'url(../resources/green-20.png)'},
+ {at: 1, expect: 'url(../resources/green-20.png)'},
+ {at: 1.5, expect: 'url(../resources/green-20.png)'},
+]);
+
+// inherit
+test_interpolation({
+ property: 'mask-image',
+ from: 'inherit',
+ to: 'url(../resources/green-20.png)',
+}, [
+ {at: -0.3, expect: 'url(../resources/blue-20.png)'},
+ {at: 0, expect: 'url(../resources/blue-20.png)'},
+ {at: 0.3, expect: 'url(../resources/blue-20.png)'},
+ {at: 0.6, expect: 'url(../resources/green-20.png)'},
+ {at: 1, expect: 'url(../resources/green-20.png)'},
+ {at: 1.5, expect: 'url(../resources/green-20.png)'},
+]);
+
+// unset
+test_interpolation({
+ property: 'mask-image',
+ from: 'unset',
+ to: 'url(../resources/stripes-20.png)',
+}, [
+ {at: -0.3, expect: 'none'},
+ {at: 0, expect: 'none'},
+ {at: 0.3, expect: 'none'},
+ {at: 0.6, expect: 'url(../resources/stripes-20.png)'},
+ {at: 1, expect: 'url(../resources/stripes-20.png)'},
+ {at: 1.5, expect: 'url(../resources/stripes-20.png)'},
+]);
+
+// Image to image
+test_interpolation({
+ property: 'mask-image',
+ from: 'url(../resources/stripes-20.png)',
+ to: 'url(../resources/blue-20.png)',
+}, [
+ {at: -0.3, expect: 'url(../resources/stripes-20.png)'},
+ {at: 0, expect: 'url(../resources/stripes-20.png)'},
+ {at: 0.3, expect: 'url(../resources/stripes-20.png)'},
+ {at: 0.6, expect: 'url(../resources/blue-20.png)'},
+ {at: 1, expect: 'url(../resources/blue-20.png)'},
+ {at: 1.5, expect: 'url(../resources/blue-20.png)'},
+]);
+
+//Image to gradient
+test_interpolation({
+ property: 'mask-image',
+ from: 'url(../resources/stripes-20.png)',
+ to: 'linear-gradient(45deg, blue, transparent)'
+}, [
+ {at: -0.3, expect: 'url(../resources/stripes-20.png)'},
+ {at: 0, expect: 'url(../resources/stripes-20.png)'},
+ {at: 0.3, expect: 'url(../resources/stripes-20.png)'},
+ {at: 0.6, expect: 'linear-gradient(45deg, blue, transparent)'},
+ {at: 1, expect: 'linear-gradient(45deg, blue, transparent)'},
+ {at: 1.5, expect: 'linear-gradient(45deg, blue, transparent)'},
+]);
+
+// Keyword to image
+test_interpolation({
+ property: 'mask-image',
+ from: 'none',
+ to: 'url(../resources/green-20.png)',
+}, [
+ {at: -0.3, expect: 'none'},
+ {at: 0, expect: 'none'},
+ {at: 0.3, expect: 'none'},
+ {at: 0.6, expect: 'url(../resources/green-20.png)'},
+ {at: 1, expect: 'url(../resources/green-20.png)'},
+ {at: 1.5, expect: 'url(../resources/green-20.png)'},
+]);
+
+// Multiple to multiple
+var fromA = 'url(../resources/stripes-20.png)';
+var fromB = 'linear-gradient(-45deg, blue, transparent)';
+var toA = 'url(../resources/blue-20.png)';
+var toB = 'url(../resources/stripes-20.png)';
+var from = fromA + ', ' + fromB;
+var to = toA + ', ' + toB;
+test_interpolation({
+ property: 'mask-image',
+ from: from,
+ to: to,
+}, [
+ {at: -0.3, expect: from},
+ {at: 0, expect: from},
+ {at: 0.3, expect: from},
+ {at: 0.6, expect: to},
+ {at: 1, expect: to},
+ {at: 1.5, expect: to},
+]);
+
+// Single to multiple
+from = 'url(../resources/blue-20.png)';
+toA = 'url(../resources/stripes-20.png)';
+toB = 'url(../resources/blue-20.png)';
+to = toA + ', ' + toB;
+test_interpolation({
+ property: 'mask-image',
+ from: from,
+ to: to,
+}, [
+ {at: -0.3, expect: from},
+ {at: 0, expect: from},
+ {at: 0.3, expect: from},
+ {at: 0.6, expect: to},
+ {at: 1, expect: to},
+ {at: 1.5, expect: to},
+]);
+
+// Multiple mismatched types
+test_interpolation({
+ property: 'mask-image',
+ from: 'url(../resources/blue-20.png), none',
+ to: 'url(../resources/stripes-20.png), url(../resources/blue-20.png)',
+}, [
+ {at: -0.3, expect: from},
+ {at: 0, expect: from},
+ {at: 0.3, expect: from},
+ {at: 0.6, expect: to},
+ {at: 1, expect: to},
+ {at: 1.5, expect: to},
+]);
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/animations/mask-position-interpolation.html b/testing/web-platform/tests/css/css-masking/animations/mask-position-interpolation.html
new file mode 100644
index 0000000000..d832048ca3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/animations/mask-position-interpolation.html
@@ -0,0 +1,146 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<meta charset="UTF-8">
+<title>mask-position-interpolation</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-position">
+<meta name="assert" content="mask-position supports animation">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.container {
+ display: inline-block;
+ border: 2px solid black;
+}
+.parent {
+ mask-position: 30px 10px;
+}
+.target {
+ width: 120px;
+ height: 120px;
+ mask-position: 10px 30px;
+}
+</style>
+
+<body>
+<template id="target-template">
+ <div class="container">
+ <div class="target"></div>
+ </div>
+</template>
+<script>
+// neutral
+test_interpolation({
+ property: 'mask-position',
+ from: neutralKeyframe,
+ to: '20px 20px',
+}, [
+ {at: -0.25, expect: '7.5px 32.5px'},
+ {at: 0, expect: '10px 30px'},
+ {at: 0.25, expect: '12.5px 27.5px'},
+ {at: 0.5, expect: '15px 25px'},
+ {at: 0.75, expect: '17.5px 22.5px'},
+ {at: 1, expect: '20px 20px'},
+ {at: 1.25, expect: '22.5px 17.5px'},
+]);
+
+// initial
+test_interpolation({
+ property: 'mask-position',
+ from: 'initial',
+ to: '20px 20px',
+}, [
+ {at: -0.25, expect: 'calc(0% - 5px) calc(0% - 5px)'},
+ {at: 0, expect: '0% 0%'},
+ {at: 0.25, expect: 'calc(0% + 5px) calc(0% + 5px)'},
+ {at: 0.5, expect: 'calc(0% + 10px) calc(0% + 10px)'},
+ {at: 0.75, expect: 'calc(0% + 15px) calc(0% + 15px)'},
+ {at: 1, expect: 'calc(0% + 20px) calc(0% + 20px)'},
+ {at: 1.25, expect:'calc(0% + 25px) calc(0% + 25px)'},
+]);
+
+// inherit
+test_interpolation({
+ property: 'mask-position',
+ from: 'inherit',
+ to: '20px 20px',
+}, [
+ {at: -0.25, expect: '32.5px 7.5px'},
+ {at: 0, expect: '30px 10px'},
+ {at: 0.25, expect: '27.5px 12.5px'},
+ {at: 0.5, expect: '25px 15px'},
+ {at: 0.75, expect: '22.5px 17.5px'},
+ {at: 1, expect: '20px 20px'},
+ {at: 1.25, expect: '17.5px 22.5px'},
+]);
+
+// unset
+test_interpolation({
+ property: 'mask-position',
+ from: 'unset',
+ to: '20px 20px',
+}, [
+ {at: -0.25, expect: 'calc(0% - 5px) calc(0% - 5px)'},
+ {at: 0, expect: '0% 0%'},
+ {at: 0.25, expect: 'calc(0% + 5px) calc(0% + 5px)'},
+ {at: 0.5, expect: 'calc(0% + 10px) calc(0% + 10px)'},
+ {at: 0.75, expect: 'calc(0% + 15px) calc(0% + 15px)'},
+ {at: 1, expect: 'calc(0% + 20px) calc(0% + 20px)'},
+ {at: 1.25, expect:'calc(0% + 25px) calc(0% + 25px)'},
+]);
+
+// Test equal number of position values as background images.
+test_interpolation({
+ property: 'mask-position',
+ from: '0px 0px, 0px 0px, 0px 0px, 0px 0px',
+ to: '80px 80px, 80px 80px, 80px 80px, 80px 80px',
+}, [
+ {at: -0.25, expect: '-20px -20px, -20px -20px, -20px -20px, -20px -20px'},
+ {at: 0, expect: ' 0px 0px, 0px 0px, 0px 0px, 0px 0px'},
+ {at: 0.25, expect: ' 20px 20px, 20px 20px, 20px 20px, 20px 20px'},
+ {at: 0.5, expect: ' 40px 40px, 40px 40px, 40px 40px, 40px 40px'},
+ {at: 0.75, expect: ' 60px 60px, 60px 60px, 60px 60px, 60px 60px'},
+ {at: 1, expect: ' 80px 80px, 80px 80px, 80px 80px, 80px 80px'},
+ {at: 1.25, expect: '100px 100px, 100px 100px, 100px 100px, 100px 100px'},
+]);
+
+// Test single position value repeated over background images.
+test_interpolation({
+ property: 'mask-position',
+ from: 'top 0px left 0px',
+ to: 'left 80px top 80px',
+}, [
+ {at: -0.25, expect: '-20px -20px'},
+ {at: 0, expect: ' 0px 0px'},
+ {at: 0.25, expect: ' 20px 20px'},
+ {at: 0.5, expect: ' 40px 40px'},
+ {at: 0.75, expect: ' 60px 60px'},
+ {at: 1, expect: ' 80px 80px'},
+ {at: 1.25, expect: '100px 100px'},
+]);
+
+// Test mismatched numbers of position values.
+test_interpolation({
+ property: 'mask-position',
+ from: '0px 0px, 80px 0px',
+ to: '40px 40px, 80px 80px, 0px 80px',
+}, [
+ {at: -0.25, expect:
+ '-10px -10px, 80px -20px, 0px -20px, 90px -10px, -20px -20px, 100px -20px'},
+ {at: 0, expect:
+ ' 0px 0px, 80px 0px, 0px 0px, 80px 0px, 0px 0px, 80px 0px'},
+ {at: 0.25, expect:
+ ' 10px 10px, 80px 20px, 0px 20px, 70px 10px, 20px 20px, 60px 20px'},
+ {at: 0.5, expect:
+ ' 20px 20px, 80px 40px, 0px 40px, 60px 20px, 40px 40px, 40px 40px'},
+ {at: 0.75, expect:
+ ' 30px 30px, 80px 60px, 0px 60px, 50px 30px, 60px 60px, 20px 60px'},
+ {at: 1, expect:
+ ' 40px 40px, 80px 80px, 0px 80px, 40px 40px, 80px 80px, 0px 80px'},
+ {at: 1.25, expect:
+ ' 50px 50px, 80px 100px, 0px 100px, 30px 50px, 100px 100px, -20px 100px'},
+]);
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-nested-twice.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-nested-twice.svg
new file mode 100644
index 0000000000..269e8feed2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-nested-twice.svg
@@ -0,0 +1,23 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath element nested twice</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Check deep referencing of content of one clipPath
+ element to another clipPath element. A green square should be visible.
+ </desc>
+</g>
+<clipPath id="clip3">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<clipPath id="clip2" clip-path="url(#clip3)">
+ <circle cx="100" cy="100" r="75"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <circle cx="100" cy="100" r="100"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-001.svg
new file mode 100644
index 0000000000..e5b972ff0b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-001.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clip-rule property - evenodd</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-square-hole-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Check if the clip-rule 'evenodd' applies to a content
+ polygon element of clipPath element. A green square with a
+ rectangular hole should be visible.</desc>
+</g>
+<clipPath id="clip1">
+ <polygon points="25 25, 175 25, 175 175, 25 175, 25 50, 150 50, 150 150, 50 150, 50 50, 25 50" clip-rule="evenodd" />
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-002.svg
new file mode 100644
index 0000000000..7729f79731
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-002.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clip-rule property - nonzero</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-square-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Check if the clip-rule 'nonzero' applies to a content
+ polygon element of clipPath element. A green square should be
+ visible.</desc>
+</g>
+<clipPath id="clip1">
+ <polygon points="25 25, 175 25, 175 175, 25 175, 25 50, 150 50, 150 150, 50 150, 50 50, 25 50" clip-rule="nonzero" />
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-003.svg
new file mode 100644
index 0000000000..c4f2bf42b0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-003.svg
@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clip-rule property - evenodd nested clip</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-square-hole-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Check if the clip-rule 'evenodd' applies to a content
+ polygon element of clipPath element. A green square with a
+ rectangular hole should be visible.</desc>
+</g>
+<clipPath id="clip2">
+ <rect x="25" y="25" width="150" height="150"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <polygon points="0 0, 200 0, 200 200, 0 200, 0 50, 150 50, 150 150, 50 150, 50 50, 0 50" clip-rule="evenodd" />
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-004.svg
new file mode 100644
index 0000000000..2ea618602a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-004.svg
@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clip-rule property - nonzero nested clip</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-square-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Check that clip-rule 'nonzero' applies to
+ clipPath element and a second clipPath element can be applied to
+ the first one. A green square should be visible.</desc>
+</g>
+<clipPath id="clip2">
+ <rect x="25" y="25" width="150" height="150"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <polygon points="0 0, 200 0, 200 200, 0 200, 0 50, 150 50, 150 150, 50 150, 50 50, 0 50" clip-rule="nonzero" />
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-005.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-005.svg
new file mode 100644
index 0000000000..ca492583cd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-005.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath clip-rule evenodd nonzero</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-clip-rule-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Test two different clip-rules on two different content
+ elements. You should see two green rectangles. The one on the top left
+ should have a hole, the shifted one shouldn't.</desc>
+</g>
+<clipPath id="clip1">
+ <polygon points="0 0, 150 0, 150 150, 0 150, 0 25, 125 25, 125 125, 25 125, 25 25, 0 25" clip-rule="evenodd"/>
+ <polygon points="50 50, 200 50, 200 200, 50 200, 50 75, 175 75, 175 175, 75 175, 75 75, 50 75" clip-rule="nonzero"/>
+</clipPath>
+<rect x="0" y="0" height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-006.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-006.svg
new file mode 100644
index 0000000000..da9d1010d5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-006.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath clip-rule nonzero nonzero</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-clip-rule-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Test two equal clip-rules 'nonzero' on two different
+ content elements. You should see two solid green rectangles. The first one
+ on the top left, the second one slightly shifted to the bottom right.
+ </desc>
+</g>
+<clipPath id="clip1">
+ <polygon points="0 0, 150 0, 150 150, 0 150, 0 25, 125 25, 125 125, 25 125, 25 25, 0 25" clip-rule="nonzero"/>
+ <polygon points="50 50, 200 50, 200 200, 50 200, 50 75, 175 75, 175 175, 75 175, 75 75, 50 75" clip-rule="nonzero"/>
+</clipPath>
+<rect x="0" y="0" height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-007.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-007.svg
new file mode 100644
index 0000000000..d1edb6cd9a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-007.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath clip-rule nonzero evenodd</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-clip-rule-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Test two different clip-rules on two different content
+ elements. You should see two green rectangles. The one on the top left
+ shouldn't have a hole, the shifted one should have.</desc>
+</g>
+<clipPath id="clip1">
+ <polygon points="0 0, 150 0, 150 150, 0 150, 0 25, 125 25, 125 125, 25 125, 25 25, 0 25" clip-rule="nonzero"/>
+ <polygon points="50 50, 200 50, 200 200, 50 200, 50 75, 175 75, 175 175, 75 175, 75 75, 50 75" clip-rule="evenodd"/>
+</clipPath>
+<rect x="0" y="0" height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-008.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-008.svg
new file mode 100644
index 0000000000..66ad9b5cb9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-008.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath clip-rule evenodd evenodd</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-clip-rule-004-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Test two equal clip-rules 'evenodd' on two different
+ content elements. You should see two green rectangles with a hole. The
+ first one on the top left, the second one slightly shifted to the bottom
+ right.</desc>
+</g>
+<clipPath id="clip1">
+ <polygon points="0 0, 150 0, 150 150, 0 150, 0 25, 125 25, 125 125, 25 125, 25 25, 0 25" clip-rule="evenodd"/>
+ <polygon points="50 50, 200 50, 200 200, 50 200, 50 75, 175 75, 175 175, 75 175, 75 75, 50 75" clip-rule="evenodd"/>
+</clipPath>
+<rect x="0" y="0" height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-009.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-009.svg
new file mode 100644
index 0000000000..69d70b4e3e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-009.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath fill-rule</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-square-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The fill-rule must not affect the winding rule for
+ clipping. A green square should be visible.</desc>
+</g>
+<clipPath id="clip1">
+ <!-- fill-rule must not affect the winding rule for clipping -->
+ <polygon points="25 25, 175 25, 175 175, 25 175, 25 50, 150 50, 150 150, 50 150, 50 50, 25 50" fill-rule="evenodd"/>
+</clipPath>
+<rect x="0" y="0" height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-010.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-010.svg
new file mode 100644
index 0000000000..594e3097c9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip-rule-010.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath clip-rule inheritance</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-rule"/>
+ <html:link rel="match" href="reference/clip-path-clip-rule-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">inheritance and overriding of inheritance. The one on
+ the top left should have a hole, the shifted one shouldn't.</desc>
+</g>
+<clipPath id="clip1" clip-rule="evenodd">
+ <polygon points="0 0, 150 0, 150 150, 0 150, 0 25, 125 25, 125 125, 25 125, 25 25, 0 25"/>
+ <polygon points="50 50, 200 50, 200 200, 50 200, 50 75, 175 75, 175 175, 75 175, 75 75, 50 75" clip-rule="nonzero"/>
+</clipPath>
+<rect x="0" y="0" height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip.svg
new file mode 100644
index 0000000000..530fd014d3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-clip.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath references clipPath</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element references another
+ clipPath element. A green square should be visible.</desc>
+</g>
+<clipPath id="clip2">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <circle cx="100" cy="100" r="100"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-001.svg
new file mode 100644
index 0000000000..9991f16476
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-001.svg
@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: content of clipPath clipped 1</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Content element of clipPath references second
+ clipPath element and should be clipped by it. A green square should
+ be visible.
+ </desc>
+</g>
+<clipPath id="clip2">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<clipPath id="clip1">
+ <circle cx="100" cy="100" r="100" clip-path="url(#clip2)"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-002.svg
new file mode 100644
index 0000000000..7677e3f19a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-002.svg
@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: content of clipPath clipped 2</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">One content element of clipPath references second
+ clipPath element and should be clipped by it. Second content element
+ isn't clipped. A green square should be visible.</desc>
+</g>
+<clipPath id="clip2">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<clipPath id="clip1">
+ <circle cx="100" cy="100" r="50"/>
+ <circle cx="100" cy="100" r="75" clip-path="url(#clip2)"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-003.svg
new file mode 100644
index 0000000000..fd1b291625
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-003.svg
@@ -0,0 +1,24 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: content of clipPath clipped 3</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Both content elements of clipPath reference
+ different other clipPath elements and should be clipped by them. A
+ green square should be visible.</desc>
+</g>
+<clipPath id="clip2">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<clipPath id="clip3">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<clipPath id="clip1">
+ <circle cx="100" cy="100" r="75" clip-path="url(#clip2)"/>
+ <circle cx="100" cy="100" r="75" clip-path="url(#clip3)"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-004.svg
new file mode 100644
index 0000000000..2317842e5f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-clip-004.svg
@@ -0,0 +1,29 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+ <g id="testmeta">
+ <title>CSS Masking: clip-path applied to an element in a clipPath with objectBoundingBox units</title>
+ <html:link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-content-clip-004-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">
+ When a clipPath establishes a coordinate system using objectBoundingBox
+ units, any other clipPath referenced through the clip-path property on
+ the first clipPath's children must use that same coordinate system if
+ it is using userSpaceOnUse units.
+ </desc>
+ </g>
+ <defs>
+ <clipPath id="inner">
+ <rect width="0.25" height="0.25"/>
+ </clipPath>
+ <clipPath id="outer" clipPathUnits="objectBoundingBox">
+ <rect width="0.5" height="0.5" clip-path="url(#inner)"/>
+ </clipPath>
+ </defs>
+ <rect width="100" height="100" fill="red"/>
+ <g clip-path="url(#outer)">
+ <rect width="400" height="400" fill="red"/>
+ <rect width="100" height="100" fill="green"/>
+ </g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-invisible.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-invisible.svg
new file mode 100644
index 0000000000..0696d4b09f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-invisible.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Content of clipPath with visibility: hidden</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-invisible-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">From the spec: "If a child element is made invisible
+ by display or visibility it does not contribute to the clipping path."
+ clipPath without content hides the clipped element. Nothing should be
+ visible.
+ </desc>
+</g>
+<clipPath id="clip1">
+ <rect width="100" height="100" style="visibility: hidden;"/>
+</clipPath>
+<rect height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-syling.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-syling.svg
new file mode 100644
index 0000000000..5fb527d1e5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-syling.svg
@@ -0,0 +1,16 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath content styling</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Style properties on content elements of clipPath
+ must be ignored. A green square should be visible.</desc>
+</g>
+<clipPath id="clip1">
+ <rect x="50" y="50" width="100" height="100" stroke="black" stroke-width="10" stroke-dasharray="10 10" fill="none"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-001.svg
new file mode 100644
index 0000000000..b70cdde683
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-001.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath reference content with use 1</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Reference content clip shape with use element from
+ defs section. A green square should be visible.</desc>
+</g>
+<defs>
+ <rect id="circle" x="50" y="50" width="100" height="100"/>
+</defs>
+<clipPath id="clip1">
+ <use xlink:href="#circle"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-002.svg
new file mode 100644
index 0000000000..0596d21cfe
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-002.svg
@@ -0,0 +1,24 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath reference content with use 2</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Reference content clip shape with use element from
+ defs section. Afterwards, the clipPath element gets clipped.
+ A green square should be visible.</desc>
+</g>
+<defs>
+ <rect id="rect" x="50" y="50" width="150" height="150"/>
+</defs>
+<clipPath id="clip2">
+ <rect width="150" height="150"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <use xlink:href="#rect"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-003.svg
new file mode 100644
index 0000000000..79354679cf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-003.svg
@@ -0,0 +1,26 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath reference content with use 3</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Reference content clip shape with use element from
+ defs section. Afterwards, the clipPath element gets clipped.
+ The second clipPath element references the content element with
+ use as well. A green square should be visible.</desc>
+</g>
+<defs>
+ <rect id="rect1" x="50" y="50" width="150" height="150"/>
+ <rect id="rect2" width="150" height="150"/>
+</defs>
+<clipPath id="clip2">
+ <use xlink:href="#rect2"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <use xlink:href="#rect1"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-004.svg
new file mode 100644
index 0000000000..8e2e7a67ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-004.svg
@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath reference content with use 4</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Reference content clip shape with use element from
+ defs section. Furthermore, the referenced shape gets transformed. A
+ green square should be visible.</desc>
+</g>
+<defs>
+ <rect id="rect" width="100" height="100"/>
+</defs>
+<clipPath id="clip1">
+ <use xlink:href="#rect" transform="translate(50, 50)"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-005.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-005.svg
new file mode 100644
index 0000000000..c7d5ec8390
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-005.svg
@@ -0,0 +1,25 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath reference content with use 5</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The clipPath elements reference the same content
+ clip shape with use. One use reference gets transformed. The one
+ clipPath element gets clipped by the other one. A green square should
+ be visible.</desc>
+</g>
+<defs>
+ <rect id="rect" width="150" height="150"/>
+</defs>
+<clipPath id="clip2">
+ <use xlink:href="#rect"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <use xlink:href="#rect" transform="translate(50, 50)"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-006.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-006.svg
new file mode 100644
index 0000000000..6f9d7e0673
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-006.svg
@@ -0,0 +1,26 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath reference content with use 6</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The clipPath elements reference two different
+ content clip shapes with use. One use reference gets transformed.
+ The one clipPath element gets clipped by the other one. A green square
+ should be visible.</desc>
+</g>
+<defs>
+ <rect id="rect1" width="150" height="150"/>
+ <rect id="rect2" width="150" height="150"/>
+</defs>
+<clipPath id="clip2">
+ <use xlink:href="#rect1"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <use xlink:href="#rect2" transform="translate(50, 50)"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-007.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-007.svg
new file mode 100644
index 0000000000..7cf0fa08e5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-content-use-007.svg
@@ -0,0 +1,25 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath reference content with use 7</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The clipPath element has a content use
+ element which references another use element which references a shape.
+ A green square should be visible.</desc>
+</g>
+<defs>
+ <rect width="200" height="200" id="rect"/>
+ <use id="use" xlink:href="#rect"/>
+</defs>
+<clipPath id="clip1">
+ <use xlink:href="#use" />
+</clipPath>
+
+<rect width="400" height="400" fill="red" clip-path="url(#clip1)"/>
+<rect width="200" height="200" fill="green" />
+</svg>
+
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-001.svg
new file mode 100644
index 0000000000..35b21f5f1e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-001.svg
@@ -0,0 +1,16 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with CSS Transforms</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">CSS Transforms must apply on the clipPath
+ element. A green square should be visible.</desc>
+</g>
+<clipPath id="clip1" style="transform: scale(10) translate(5px, 5px);">
+ <rect width="10" height="10"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-002.svg
new file mode 100644
index 0000000000..78b57628ff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-002.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with CSS Transforms and 2nd content element</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">CSS Transforms must apply on the clipPath
+ element. This example adds a second content element since that may
+ cause masking in some implementations. A green square should be
+ visible.</desc>
+</g>
+<clipPath id="clip1" style="transform: scale(10) translate(5px, 5px);">
+ <rect width="10" height="10"/>
+ <!-- Second rect may cause masking -->
+ <rect width="5" height="4"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-003.svg
new file mode 100644
index 0000000000..8f2713d276
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-003.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with CSS Transforms on content element</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">CSS Transforms must apply on content element of the
+ clipPath element. A green square should be visible.</desc>
+</g>
+<clipPath id="clip1">
+ <rect width="400" height="400" style="transform: scale(.5);"/>
+</clipPath>
+<rect width="400" height="400" fill="red" clip-path="url(#clip1)"/>
+<rect width="200" height="200" fill="green"/>
+</svg>
+
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-004.svg
new file mode 100644
index 0000000000..d290fe13a7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-css-transform-004.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with CSS Transforms on both content elements</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">CSS Transforms must apply on both content elements of
+ the clipPath element. A green square should be visible.</desc>
+</g>
+<clipPath id="clip1">
+ <rect width="400" height="400" style="transform: scale(.5)"/>
+ <!-- Second rect may cause masking. -->
+ <rect width="400" height="400" style="transform: scale(.5)"/>
+</clipPath>
+<rect width="400" height="400" fill="red" clip-path="url(#clip1)"/>
+<rect width="200" height="200" fill="green"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-child-changes.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-child-changes.svg
new file mode 100644
index 0000000000..611fb3fcf0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-child-changes.svg
@@ -0,0 +1,26 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Dynamic transform on clipPath content element</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A transformation is applied on the content element of
+ clipPath. A green square should be visible.</desc>
+</g>
+<clipPath id="clip1">
+ <rect width="400" height="400"/>
+</clipPath>
+
+<g clip-path="url(#clip1)">
+ <rect width="400" height="400" fill="red"/>
+ <rect width="200" height="200" fill="green"/>
+</g>
+
+<script>
+var clip = document.getElementById("clip1");
+var rect = clip.firstChild.nextSibling;
+rect.setAttribute("transform", "scale(0.5)");
+</script>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-clippathunits.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-clippathunits.svg
new file mode 100644
index 0000000000..edfccbd83f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-clippathunits.svg
@@ -0,0 +1,26 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Dynamic change of clipPathUnits on clipPath</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The clipPathUnits attribute on the clipPath
+ element gets changed dynamically from objectBoundingBox to userSpaceOnUse.
+ This reduces the clipping area from a size much bigger than the document to
+ the size of the green rectangle. A green square should be visible.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect width="200" height="200"/>
+</clipPath>
+
+<rect width="400" height="400" fill="red" clip-path="url(#clip1)"/>
+<rect width="200" height="200" fill="green"/>
+
+<script>
+var clip = document.getElementById("clip1");
+var enumeration = clip.clipPathUnits;
+enumeration.baseVal = 1; // Switch to userSpaceOnUse!
+</script>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-href.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-href.svg
new file mode 100644
index 0000000000..748ff2cc5c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-href.svg
@@ -0,0 +1,25 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Dynamic reference of clipPath element</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The clip-path property gets applied to the later
+ clipped rectangle dynamically. A green square should be visible.</desc>
+</g>
+
+<clipPath id="clip1">
+ <rect width="200" height="200"/>
+</clipPath>
+
+<g clip-path="url(#noclip)" id="target">
+ <rect width="400" height="400" fill="red"/>
+ <rect width="200" height="200" fill="green"/>
+</g>
+
+<script>
+document.getElementById("target").setAttribute("clip-path", "url(#clip1)");
+</script>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-id.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-id.svg
new file mode 100644
index 0000000000..e8ad7daecc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-dom-id.svg
@@ -0,0 +1,23 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Dynamic change of clipPath id</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The id of a clipPath element is changed
+ dynamically. This makes the previous invalid clip path reference
+ of the group valid. A green square should be visible.</desc>
+</g>
+<clipPath id="oldclip" clipPathUnits="userSpaceOnUse">
+ <rect width="200" height="200"/>
+</clipPath>
+<g clip-path="url(#newclip)">
+ <rect width="400" height="400" fill="red"/>
+ <rect width="200" height="200" fill="green"/>
+</g>
+<script>
+document.getElementsByTagName("clipPath")[0].setAttribute("id", "newclip");
+</script>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-invalid.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-invalid.svg
new file mode 100644
index 0000000000..85aa3a825b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-invalid.svg
@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath invalid content element</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-invisible-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">clipPath elements get invalid if the content
+ element is not a basic shape or a reference to a basic shape.
+ Invalid clipPath elements let the clipped element disappear.
+ Nothing should be visible.</desc>
+</g>
+<clipPath id="clip1">
+ <!-- nothing should be visible, containers are not allowed in clipPath -->
+ <g>
+ <rect width="100" height="100"/>
+ </g>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-negative-scale.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-negative-scale.svg
new file mode 100644
index 0000000000..33d6a78c7d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-negative-scale.svg
@@ -0,0 +1,40 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath negative scale</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-negative-scale-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Negative scale factors on clipped elements should
+ be handled correctly by clipPath elements. First clipped, then
+ scaled.</desc>
+</g>
+<defs>
+<g id="img" transform="translate(10,10)">
+ <rect width="200" height="200" fill="red"/>
+ <rect width="100" height="100" fill="green"/>
+ <rect width="50" height="50" fill="blue"/>
+</g>
+</defs>
+
+<clipPath id="clip">
+ <rect x="10" y="10" height="90" width="90"/>
+</clipPath>
+
+<g transform="translate(200, 200)">
+<g transform="matrix(1 0 0 1 -100 -100)" clip-path="url(#clip)">
+ <use xlink:href="#img"/>
+</g>
+<g transform="matrix(-1 0 0 -1 -100 -100)" clip-path="url(#clip)">
+ <use xlink:href="#img"/>
+</g>
+<g transform="matrix(-1 0 0 1 -100 -100)" clip-path="url(#clip)">
+ <use xlink:href="#img"/>
+</g>
+<g transform="matrix(1 0 0 -1 -100 -100)" clip-path="url(#clip)">
+ <use xlink:href="#img"/>
+</g>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-001.svg
new file mode 100644
index 0000000000..f7943c615d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-001.svg
@@ -0,0 +1,15 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath without content</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-invisible-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">clipPath element without content make the clipped
+ element disappear. Nothing should be visible.</desc>
+</g>
+<clipPath id="clip1">
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-002.svg
new file mode 100644
index 0000000000..65df6176ac
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-002.svg
@@ -0,0 +1,17 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath without content 2</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-invisible-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">clipPath element where the clip shape does not
+ intersect with the clipped element make the clipped element disappear.
+ Nothing should be visible.</desc>
+</g>
+<clipPath id="clip1">
+ <circle cx="400" cy="400" r="100"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-003.svg
new file mode 100644
index 0000000000..afd8f702ed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-003.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and clipPath without intersection</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-invisible-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">If a clipPath element get clipped and there is no
+ intersection with the second clipPath element, the originally clipped
+ element disappears. Nothing should be visible.</desc>
+</g>
+<clipPath id="clip2">
+ <circle cx="400" cy="400" r="100"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <rect width="200" height="200"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-004.svg
new file mode 100644
index 0000000000..92b27af017
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-004.svg
@@ -0,0 +1,23 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with invalid/empty content</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-invisible-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">If a clipPath element has an invalid or empty
+ basic shape the clipped element disappears. Nothing should be visible.
+ </desc>
+</g>
+<!--It tests that an empty clip path clips the referencing graphic. Bug 15289.-->
+<clipPath id="nothing">
+</clipPath>
+<clipPath id="emptyrect">
+ <rect width="0" height="0"/>
+</clipPath>
+
+<rect width="200" height="200" fill="red" clip-path="url(#nothing)"/>
+<rect width="200" height="200" fill="red" clip-path="url(#emptyrect)"/>
+</svg>
+
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-005.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-005.svg
new file mode 100644
index 0000000000..e0c03d28cb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-no-content-005.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml"
+ class="reftest-wait">
+ <title>Removing a clip-path attribute pointing to an empty &#x3c;clipPath&#x3e;</title>
+ <h:link rel="help" href="https://drafts.fxtf.org/css-masking-1/#ClipPathElement"/>
+ <h:link rel="match" href="reference/clip-path-square-003-ref.svg"/>
+ <h:script src="/common/reftest-wait.js"/>
+ <h:script src="/common/rendering-utils.js"/>
+
+ <clipPath id="empty"/>
+ <g clip-path='url("#empty")'>
+ <rect width="200" height="200" fill="green"/>
+ </g>
+ <script>
+ waitForAtLeastOneFrame().then(() => {
+ document.querySelector('svg > g').removeAttribute('clip-path');
+ takeScreenshot();
+ });
+ </script>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-001.svg
new file mode 100644
index 0000000000..d5ef03ac01
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-001.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with objectBoundingBox</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">clipPathUnits="objectBoundingBox" changes the
+ behavior of non-percentage values. The dimension of the clipped
+ element is equal to one unit for the content of clipPath.
+ You should see a green square.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.25" y="0.25" width="0.5" height="0.5"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-002.svg
new file mode 100644
index 0000000000..8180ddf9f8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-002.svg
@@ -0,0 +1,17 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml" width="400" height="400">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with objectBoundingBox and percentage</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">clipPathUnits="objectBoundingBox" changes the
+ behavior of percentage values. The behavior is specified by SVG.
+ You should see a green square.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.0625%" y="0.0625%" width="0.125%" height="0.125%"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-003.svg
new file mode 100644
index 0000000000..8a7aa0ff5c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-003.svg
@@ -0,0 +1,17 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with objectBoundingBox and scaled clipped element</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-circle-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The clipped element has a transform. The transform
+ should apply "after" the clipping. You should see a full green circle.
+ </desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <circle cx="0.25" cy="0.25" r="0.25"/>
+</clipPath>
+<rect width="10" height="10" fill="green" transform="scale(20 20)" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-004.svg
new file mode 100644
index 0000000000..215d253618
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-objectboundingbox-004.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Nested clipPath with different clipPathUnits</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The first clipPath element has
+ clipPathUnits="objectBoundingBox", the second userSpaceOnUse (default).
+ Both should be handled accordingly. You should see a green square.</desc>
+</g>
+<clipPath id="clip2">
+ <rect x="50" y="50" width="150" height="150"/>
+</clipPath>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox" clip-path="url(#clip2)">
+ <rect width="0.75" height="0.75"/>
+</clipPath>
+<rect height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-001.svg
new file mode 100644
index 0000000000..6d837af68b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-001.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath on g element</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element on a g element should clip the
+ group with it's content. You should see a green square.</desc>
+</g>
+<clipPath id="clip1">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<g clip-path="url(#clip1)">
+ <rect width="200" height="200" fill="green"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-002.svg
new file mode 100644
index 0000000000..a14287cbc9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-002.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath on g element and child</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element on a g element and it's child
+ element should clip the child first, then the group with it's content.
+ You should see a green square.</desc>
+</g>
+<clipPath id="clip1">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<g clip-path="url(#clip1)">
+ <rect width="200" height="200" fill="green" clip-path="url(clip1)"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-003.svg
new file mode 100644
index 0000000000..b3eead8ac2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-003.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath on child of g element</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element on a child of g element should
+ just clip the child and not the group. You should see a green square.
+ </desc>
+</g>
+<clipPath id="clip1">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<g>
+ <rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-004.svg
new file mode 100644
index 0000000000..32eaf00369
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-004.svg
@@ -0,0 +1,22 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Two different clipPaths on g element and child</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element on a child and a differnt
+ clipPath element on g element should clip their targets independent of
+ each other but the child first. You should see a green square.</desc>
+</g>
+<clipPath id="clip2">
+ <rect width="150" height="150"/>
+</clipPath>
+<clipPath id="clip1">
+ <rect x="50" y="50" width="150" height="150"/>
+</clipPath>
+<g clip-path="url(#clip1)">
+ <rect width="200" height="200" fill="green" clip-path="url(#clip2)"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-005.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-005.svg
new file mode 100644
index 0000000000..c621d91c3e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-g-005.svg
@@ -0,0 +1,25 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Two different clipPaths with objectBoundingBox on g element and child</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element on a child and a differnt
+ clipPath element on g element should clip their targets independent of
+ each other but the child first. When both have
+ clipPathUnits="objectBoundingBox", then the bounding box of each element is
+ taken. Note that clipping on the child influences the bounding box of the
+ group. You should see a green square.</desc>
+</g>
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect width="0.75" height="0.75"/>
+</clipPath>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.25" y="0.25" width="0.75" height="0.75"/>
+</clipPath>
+<g clip-path="url(#clip1)">
+ <rect width="200" height="200" fill="green" clip-path="url(#clip2)"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-marker-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-marker-001.svg
new file mode 100644
index 0000000000..ae5df003fa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-marker-001.svg
@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath on element with marker</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-on-marker-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element with marker is clipped as a
+ whole. Note that a marker does not influence the bounding box of an
+ element. You should see a green square with a blur square in it on the top
+ left.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect width="1" height="1"/>
+</clipPath>
+<marker id="marker1" viewBox="0 0 10 10" refX="5" refY="5" markerWidth="100" markerHeight="100">
+ <rect width="10" height="10" fill="blue"/>
+</marker>
+<path d="M50,50 L150,50 L150,150 L50,150 z" marker-start="url(#marker1)" clip-path="url(#clip1)" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-marker-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-marker-002.svg
new file mode 100644
index 0000000000..4f2ffa4c7a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-marker-002.svg
@@ -0,0 +1,22 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath on element with marker</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-on-marker-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element with marker is clipped as a
+ whole. Note that a marker does not influence the bounding box of an
+ element. The clipping region includes the whole canvas. Nothing gets
+ clipped. You should see a green square with a blur square on top of it,
+ slightly shifted to the top left.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="userSpaceOnUse">
+ <rect width="100%" height="100%"/>
+</clipPath>
+<marker id="marker1" viewBox="0 0 10 10" refX="5" refY="5" markerWidth="100" markerHeight="100">
+ <rect width="10" height="10" fill="blue"/>
+</marker>
+<path d="M50,50 L150,50 L150,150 L50,150 z" marker-start="url(#marker1)" clip-path="url(#clip1)" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-marker-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-marker-003.svg
new file mode 100644
index 0000000000..45fc0fbd37
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-marker-003.svg
@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with objectBoundingBox on element with marker</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-on-marker-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element with marker is clipped as a
+ whole. Note that a marker does not influence the bounding box of an
+ element. You should see a green square with a blur square in it on the top
+ left.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect width="1" height="1"/>
+</clipPath>
+<marker id="marker1" viewBox="0 0 10 10" refX="5" refY="5" markerWidth="100" markerHeight="100">
+ <rect width="10" height="10" fill="blue"/>
+</marker>
+<path d="M50,50 L150,50 L150,150 L50,150 z" marker-end="url(#marker1)" clip-path="url(#clip1)" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-svg-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-svg-001.svg
new file mode 100644
index 0000000000..e92ce1d10f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-svg-001.svg
@@ -0,0 +1,16 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml" clip-path="url(#clip1)">
+<g id="testmeta">
+ <title>CSS Masking: clipPath on root &lt;svg></title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element can be applied to a root
+ &lt;svg> element. You should see a green square.</desc>
+</g>
+<clipPath id="clip1">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<rect width="200" height="200" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-svg-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-svg-002.svg
new file mode 100644
index 0000000000..94067d4ba3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-svg-002.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml" clip-path="url(#clip1)">
+<g id="testmeta">
+ <title>CSS Masking: Clipped clipPath on root &lt;svg></title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element can be applied to a root
+ &lt;svg> element. This clipPath element can be clipped itself. You
+ should see a green square.</desc>
+</g>
+<clipPath id="clip2">
+ <rect x="25" y="25" width="150" height="150"/>
+</clipPath>
+<clipPath id="clip1">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip2)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-use-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-use-001.svg
new file mode 100644
index 0000000000..8a2cf81c51
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-use-001.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath on use</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A use element can be clipped by an clipPath
+ element as well. You should see a green square.</desc>
+</g>
+<defs>
+ <rect id="rect" width="200" height="200" fill="green"/>
+</defs>
+<clipPath id="clip1">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<use xlink:href="#rect" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-use-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-use-002.svg
new file mode 100644
index 0000000000..22e5ab7151
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-on-use-002.svg
@@ -0,0 +1,24 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: Clipped clipPath on use</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A use element can be clipped by an clipPath
+ element. The clipPath element can be clipped as well. You should see a
+ green square.</desc>
+</g>
+<defs>
+ <rect id="rect" width="200" height="200" fill="green" clip-path="url(#clip2)"/>
+</defs>
+<clipPath id="clip2">
+ <rect width="150" height="150"/>
+</clipPath>
+<clipPath id="clip1">
+ <rect x="50" y="50" width="150" height="150"/>
+</clipPath>
+<use xlink:href="#rect" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-precision-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-precision-001.svg
new file mode 100644
index 0000000000..aa8e5ba7e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-precision-001.svg
@@ -0,0 +1,44 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath precision</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/clip-path-precision-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Various comma values should no influence the precision
+ of the clipPath element. The test should not show any red outlines
+ around the boxes.</desc>
+</g>
+<defs>
+ <g id="paths">
+ <path d="M10 10 h20 v20 h-20 v-20 m1 1 v18 h18 v-18 h-18"/>
+ <rect x="19" y="19" width="2" height="2" />
+ <rect x="5.51" y="0.51" width="2" height="32.3" fill="white"/>
+ <rect x="35.4" y="0.51" width="2" height="32.3" fill="white"/>
+ </g>
+</defs>
+<mask id="mask">
+<use xlink:href="#paths" fill="white" x="60" />
+</mask>
+
+<clipPath id="clipper">
+ <path d="M40 10 h20 v20 h-20 v-20 m1 1 v18 h18 v-18 h-18"/>
+ <rect x="49" y="19" width="2" height="2" />
+ <rect x="35.51" y="0.51" width="2" height="32.3" />
+ <rect x="65.4" y="0.51" width="2" height="32.3" />
+</clipPath>
+
+<use xlink:href="#paths" fill="green" />
+<g clip-path="url(#clipper)">
+ <rect fill="red" x="38" y="8" width="24" height="24" />
+ <use xlink:href="#paths" fill="green" x="30" />
+</g>
+<g mask="url(#mask)">
+ <rect fill="red" x="68" y="8" width="24" height="24" />
+ <use xlink:href="#paths" fill="green" x="60" />
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-recursion-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-recursion-001.svg
new file mode 100644
index 0000000000..5d4b7c2710
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-recursion-001.svg
@@ -0,0 +1,32 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath recursion 1</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/clip-path-invisible-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath recursion counts as invalid clipping
+ path and makes the element disappear. You should see nothing.</desc>
+</g>
+<defs>
+<clipPath id="clip0">
+ <rect width="1" height="1" clip-path="url(#clip)" />
+</clipPath>
+
+<clipPath id="clip2">
+ <rect width="100" height="100" clip-path="url(#clip0)"/>
+</clipPath>
+
+<clipPath id="clip">
+ <rect width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask1" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect width="1" height="1" clip-path="url(#clip)" />
+</mask>
+</defs>
+<circle r="500" mask="url(#mask1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-recursion-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-recursion-002.svg
new file mode 100644
index 0000000000..7d921ee67d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-recursion-002.svg
@@ -0,0 +1,25 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: clipPath recursion 2</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-recursion-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">
+ A clipPath recursion counts as invalid clipping path.
+ </desc>
+</g>
+<defs>
+ <rect x="50" y="150" width="50" height="50" id="rect" fill="none" clip-path="url(#clipPath_1)"/>
+</defs>
+<clipPath id="clipPath_0">
+ <rect x="50" width="50" height="50" clip-path="url(#clipPath_0)"/>
+</clipPath>
+<clipPath id="clipPath_1">
+ <use xlink:href="#rect"/>
+</clipPath>
+<rect x="50" width="100" height="100" fill="red" clip-path="url(#clipPath_0)"/>
+<rect x="50" y="150" width="100" height="100" fill="red" clip-path="url(#clipPath_1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-001.svg
new file mode 100644
index 0000000000..873947943c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-001.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape circle() on SVG rectangle</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-circle-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function circle() applied to an SVG
+ rectangle. You should see a full green circle.</desc>
+</g>
+<rect width="100" height="100" fill="green" style="clip-path: circle()"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-002.svg
new file mode 100644
index 0000000000..dca307dd91
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-002.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape circle() on SVG rectangle with absolute values</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-circle-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function circle() with absolute values
+ applied to an SVG rectangle. You should see a full green circle.</desc>
+</g>
+<rect width="400" height="400" fill="green" style="clip-path: circle(50px at 50px 50px)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-003.svg
new file mode 100644
index 0000000000..f0110ee0a5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-003.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape circle() on SVG rectangle with fill-box</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-circle-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function circle() applied to an SVG
+ rectangle. The specified keyword fill-box defines the reference box
+ (here objectBoundingBox). You should see a full green circle.</desc>
+</g>
+<rect width="100" height="100" fill="green" stroke="green" stroke-width="10" style="clip-path: circle() fill-box;"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-004.svg
new file mode 100644
index 0000000000..c3db6d662d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-004.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape circle() on SVG rectangle with stroke-box</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-circle-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function circle() applied to an SVG
+ rectangle. The specified keyword stroke-box defines the reference box
+ stroking bounding box. You should see a full green circle.</desc>
+</g>
+<rect x="10" y="10" width="80" height="80" fill="green" stroke="green" stroke-width="20" style="clip-path: circle() stroke-box;"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-005.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-005.svg
new file mode 100644
index 0000000000..90a57e7c15
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-circle-005.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml" width="100" height="100">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape circle() on SVG rectangle with view-box</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-circle-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function circle() applied to an SVG
+ rectangle. The specified keyword view-box defines the viewport as reference
+ box. You should see a full green circle.</desc>
+</g>
+<rect width="200" height="200" fill="green" style="clip-path: circle() view-box;"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-ellipse-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-ellipse-001.svg
new file mode 100644
index 0000000000..511a197644
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-ellipse-001.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape ellipse() on SVG rectangle</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-ellipse-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function ellipse() applied to an SVG
+ rectangle. You should see a full green ellipse.</desc>
+</g>
+<rect width="200" height="150" fill="green" style="clip-path: ellipse()"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-ellipse-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-ellipse-002.svg
new file mode 100644
index 0000000000..08bdc3e19e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-ellipse-002.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape ellipse() on SVG rectangle with absolute values</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-ellipse-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function ellipse() with absolute values
+ applied to an SVG rectangle. You should see a full green ellipse.</desc>
+</g>
+<rect width="200" height="200" fill="green" style="clip-path: ellipse(100px 75px at 100px 75px)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-inset-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-inset-001.svg
new file mode 100644
index 0000000000..8176766a61
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-inset-001.svg
@@ -0,0 +1,16 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape inset() on SVG rectangle with percentag values</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-shape-inset-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function inset() applied to an SVG
+ rectangle. Percentage values are relative to a reference box. If not
+ reference box was specified the objectBoundingBox is used. The inset used
+ per side is specified by the first 10% argument. The second 10% specify the
+ border radius. You should see a green square with rounded corners.</desc>
+</g>
+<rect width="200" height="200" fill="green" style="clip-path: inset(10% round 10%)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-inset-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-inset-002.svg
new file mode 100644
index 0000000000..2793eda899
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-inset-002.svg
@@ -0,0 +1,15 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape inset() on SVG rectangle with absolute values</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-shape-inset-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function inset() applied to an SVG
+ rectangle. The inset used per side is specified by the first 20px argument.
+ The second 20px specify the border radius. You should see a green square
+ with rounded corners.</desc>
+</g>
+<rect width="200" height="200" fill="green" style="clip-path: inset(20px round 20px)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-polygon-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-polygon-001.svg
new file mode 100644
index 0000000000..f474b1264d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-polygon-001.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape polygon() on SVG rectangle with nonzero</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-square-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function polygon() with absolute values
+ applied to an SVG rectangle. The clip-rule is specified with nonzero. You
+ should see a green square.</desc>
+</g>
+<rect width="200" height="200" fill="green" style="clip-path: polygon(nonzero, 25px 25px, 175px 25px, 175px 175px, 25px 175px, 25px 50px, 150px 50px, 150px 150px, 50px 150px, 50px 50px, 25px 50px)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-polygon-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-polygon-002.svg
new file mode 100644
index 0000000000..0fd8b1bec1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-polygon-002.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape polygon() on SVG rectangle with evenodd</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-square-hole-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function polygon() with absolute values
+ applied to an SVG rectangle. The clip-rule is specified with evenodd. You
+ should see a green square with an rectangular hole.</desc>
+</g>
+<rect width="200" height="200" fill="green" style="clip-path: polygon(evenodd, 25px 25px, 175px 25px, 175px 175px, 25px 175px, 25px 50px, 150px 50px, 150px 150px, 50px 150px, 50px 50px, 25px 50px)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-polygon-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-polygon-003.svg
new file mode 100644
index 0000000000..91ee3d0576
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-shape-polygon-003.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Basic shape polygon() on SVG rectangle with no clip rule</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path"/>
+ <html:link rel="match" href="reference/clip-path-square-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A basic shape function polygon() with absolute values
+ applied to an SVG rectangle. The clip-rule is not specified and defaults to
+ nonzero. You should see a green square.</desc>
+</g>
+<rect width="200" height="200" fill="green" style="clip-path: polygon(25px 25px, 175px 25px, 175px 175px, 25px 175px, 25px 50px, 150px 50px, 150px 150px, 50px 150px, 50px 50px, 25px 50px)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-001.svg
new file mode 100644
index 0000000000..35f9fa00f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-001.svg
@@ -0,0 +1,16 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with text</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-text-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element can contain text. You should
+ see a green text "CLIP" and nothing else.</desc>
+</g>
+<clipPath id="clip1">
+ <text x="20" y="150" style="font-size: 60px; font-weight: bold;">CLIP</text>
+</clipPath>
+<rect height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-002.svg
new file mode 100644
index 0000000000..d6ae147941
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-002.svg
@@ -0,0 +1,17 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and text with styling</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-text-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element can contain text. Text styling
+ should not influence the clipping path. You should see a green text "CLIP"
+ and nothing else.</desc>
+</g>
+<clipPath id="clip1">
+ <text x="20" y="150" style="font-size:60px; font-weight:bold;" stroke="red" stroke-width="10">CLIP</text>
+</clipPath>
+<rect height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-003.svg
new file mode 100644
index 0000000000..ec7a613f9c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-003.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with text and a polygon</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-text-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element can contain text. Text can be
+ combined with other clipping shapes like polygons. You should see a green
+ text "CLIP" through the hole of a green rectangle.</desc>
+</g>
+<clipPath id="clip1">
+ <text x="20" y="150" style="font-size:60px; font-weight:bold;" stroke="red" stroke-width="10">CLIP</text>
+ <polygon points="0 0, 200 0, 200 200, 0 200, 0 50, 150 50, 150 150, 50 150, 50 50, 0 50" clip-rule="evenodd" />
+</clipPath>
+<rect height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-004.svg
new file mode 100644
index 0000000000..7adbfa2d57
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-004.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and tspan element with styling</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-text-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element can contain text in a
+ tspan element. Text styling on text element or tspan element should not influence
+ the clipping path. You should see a green text "CLIP" and nothing else.
+ </desc>
+</g>
+<clipPath id="clip1">
+ <text x="20" y="150" style="font-size:60px; font-weight:bold;"><tspan stroke="red" fill="none">CLIP</tspan></text>
+</clipPath>
+<rect height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-005.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-005.svg
new file mode 100644
index 0000000000..152f401835
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-text-005.svg
@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Clipped clipPath with text</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-text-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element can contain text. The
+ clipPath element can be clipped itself with the text. You should see
+ fragments of a green text "CLIP" and nothing else.
+ </desc>
+</g>
+<clipPath id="clip2">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <text x="20" y="150" style="font-size:60px; font-weight:bold;">CLIP</text>
+</clipPath>
+<rect height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-userspaceonuse-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-userspaceonuse-001.svg
new file mode 100644
index 0000000000..1a3d769089
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-userspaceonuse-001.svg
@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Two clipPath elements with different clipPathUnits</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">A clipPath element with clipPathUnits
+ userSpaceOnUse gets clipped by a clipPath element with cliPathUnits
+ objectBoundingBox. You should see a green square.</desc>
+</g>
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect width="0.75" height="0.75"/>
+</clipPath>
+<clipPath id="clip1" clip-path="url(#clip2)">
+ <rect x="50" y="50" width="150" height="150"/>
+</clipPath>
+<rect height="200" width="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-with-opacity.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-with-opacity.svg
new file mode 100644
index 0000000000..ac944beaff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-with-opacity.svg
@@ -0,0 +1,17 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath child with opacity style</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The opacit on the child of the clipPath should
+ not influence the clipping path. You should see a green square.</desc>
+</g>
+<clipPath id="clip">
+ <rect x="50" y="50" width="100" height="100" opacity=".4"/>
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-with-transform.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-with-transform.svg
new file mode 100644
index 0000000000..b3c3b25d50
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/clip-path-with-transform.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath with transformed child</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="match" href="reference/clip-path-square-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The child of the clipPath element has a transform
+ that influences the size of the clipping path. You should see a green
+ square.</desc>
+</g>
+<clipPath id="clip1">
+ <rect width="10" height="10" transform="scale(10) translate(5, 5)"/>
+</clipPath>
+<rect width="400" height="400" fill="green" clip-path="url(#clip1)"/>
+</svg>
+
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-and-nested-clip-path.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-and-nested-clip-path.svg
new file mode 100644
index 0000000000..725f955752
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-and-nested-clip-path.svg
@@ -0,0 +1,16 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+ <html:link rel="help" href="https://www.w3.org/TR/css-masking-1/"/>
+ <html:link rel="help" href="https://crbug.com/1155384"/>
+ <html:link rel="match" href="reference/mask-and-nested-clip-path-ref.svg"/>
+ <mask id="mask">
+ <rect x="0" y="0" width="200" height="200" fill="white" />
+ </mask>
+ <clipPath id="nested-clip-path">
+ <rect x="100" y="0" width="300" height="300" />
+ </clipPath>
+ <clipPath id="clip-path" clip-path="url(#nested-clip-path)">
+ <rect x="0" y="100" width="300" height="300" />
+ </clipPath>
+ <rect x="0" y="0" width="300" height="300" fill="red" mask="url(#mask)" clip-path="url(#clip-path)"/>
+ <rect x="100" y="100" width="100" height="100" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-001.svg
new file mode 100644
index 0000000000..0dc0f7c0f2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-001.svg
@@ -0,0 +1,40 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 1</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see a green square with 4 equally
+ sized and positioned white squares in it.</desc>
+</g>
+<clipPath id="clip0" clipPathUnits="userSpaceOnUse">
+ <rect x="60" y="60" width="30" height="30"/>
+</clipPath>
+
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="userSpaceOnUse">
+ <rect x="60" y="10" width="30" height="30" transform="scale(0.01 0.01)"/>
+ <rect x="0" y="0" width="100" height="100" transform="scale(0.01 0.01)" clip-path="url(#clip0)"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask1" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip)" />
+</mask>
+
+<rect width="200" height="200" fill="green" mask="url(#mask1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-002.svg
new file mode 100644
index 0000000000..2e611feb8b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-002.svg
@@ -0,0 +1,43 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 2</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see a green square with 4 equally
+ sized and positioned white squares in it.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask1a" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip1)" />
+</mask>
+
+<mask id="mask1b" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip2)" />
+</mask>
+
+<g mask="url(#mask1a)">
+ <rect width="200" height="200" fill="green" mask="url(#mask1b)"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-003.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-003.svg
new file mode 100644
index 0000000000..622125318c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-003.svg
@@ -0,0 +1,51 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 3</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see a green square with 4 equally
+ sized and positioned white squares in it.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask1a" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip1)" />
+</mask>
+
+<mask id="mask1b" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip2)" />
+</mask>
+
+<mask id="mask2" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white" mask="url(#mask1a)"/>
+</mask>
+
+<mask id="mask3" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white" mask="url(#mask1b)"/>
+</mask>
+
+<g mask="url(#mask3)">
+ <rect width="200" height="200" fill="green" mask="url(#mask2)"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-004.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-004.svg
new file mode 100644
index 0000000000..66bb3b7ea4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-004.svg
@@ -0,0 +1,36 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 4</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see a green square with 4 equally
+ sized and positioned white squares in it.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask1" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip)" />
+</mask>
+
+<rect width="200" height="200" fill="green" mask="url(#mask1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-005.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-005.svg
new file mode 100644
index 0000000000..9317ce4ed0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-005.svg
@@ -0,0 +1,35 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 5</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see 4 equally sized and positioned green
+ squares.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask2" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white" clip-path="url(#clip)" />
+</mask>
+
+<rect width="200" height="200" fill="green" mask="url(#mask2)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-006.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-006.svg
new file mode 100644
index 0000000000..6ab2a20f4b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-006.svg
@@ -0,0 +1,35 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 6</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see 4 equally sized and positioned green
+ squares.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask2" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white" clip-path="url(#clip)" />
+</mask>
+
+<rect width="200" height="200" fill="green" mask="url(#mask2)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-007.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-007.svg
new file mode 100644
index 0000000000..27f372494f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-007.svg
@@ -0,0 +1,36 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 7</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see a green square with 4 equally
+ sized and positioned white squares in it.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask1" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip)" />
+</mask>
+
+<rect width="200" height="200" fill="green" mask="url(#mask1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-008.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-008.svg
new file mode 100644
index 0000000000..b3f33e1999
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-008.svg
@@ -0,0 +1,44 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 8</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see a green square with 4 equally
+ sized and positioned white squares in it.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip3" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip4" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip3)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip4)"/>
+</clipPath>
+
+<mask id="mask1" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip)" />
+</mask>
+
+<rect width="200" height="200" fill="green" mask="url(#mask1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-009.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-009.svg
new file mode 100644
index 0000000000..955edd3389
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-009.svg
@@ -0,0 +1,43 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 9</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see 4 equally sized and positioned green
+ squares.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip3" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip4" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip3)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip4)"/>
+</clipPath>
+
+<mask id="mask2" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white" clip-path="url(#clip)" />
+</mask>
+
+<rect width="200" height="200" fill="green" mask="url(#mask2)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-010.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-010.svg
new file mode 100644
index 0000000000..dc1040e51d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-010.svg
@@ -0,0 +1,45 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml" width="10000" height="400">
+<g id="testmeta">
+ <title>CSS Masking: clipPath and mask nesting 10</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-003-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. You should see 2 equally sized and positioned green
+ squares next to each other.</desc>
+</g>
+<defs>
+<mask id="mask">
+ <!-- forcing a repaintRect offset -->
+ <rect x="100" width="1" height="1" fill="black"/>
+ <rect x="200" width="8092" height="100" fill="white"/>
+</mask>
+
+<clipPath id="clip1">
+ <!-- forcing clipping via masking -->
+ <path d="M 0 0 V 100 H 10000 V 0 Z"/>
+</clipPath>
+
+<clipPath id="clip2" clip-path="url(#clip1)">
+ <path d="M 100 0 H 200 V 200 H 8292 V 0 Z"/>
+</clipPath>
+
+<mask id="crop">
+ <rect width="300" height="100" fill="white"/>
+</mask>
+</defs>
+
+<g mask="url(#crop)" transform="translate(-100, 0)">
+ <rect width="10000" height="400" fill="red" mask="url(#mask)"/>
+ <rect x="199" width="101" height="100" fill="green"/>
+</g>
+
+<g mask="url(#crop)" transform="translate(100, 0)">
+ <rect width="10000" height="400" fill="red" clip-path="url(#clip2)"/>
+ <rect x="199" width="101" height="100" fill="green"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-panning-001.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-panning-001.svg
new file mode 100644
index 0000000000..16890a5859
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-panning-001.svg
@@ -0,0 +1,48 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Panning with clipPath and mask nesting 1</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. The current viewport gets translated by panning. You
+ should see a green square with 4 equally sized and positioned white squares
+ in it.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask1a" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip1)" />
+</mask>
+
+<mask id="mask1b" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip2)" />
+</mask>
+
+<g mask="url(#mask1a)" transform="translate(75, 0)">
+ <rect width="200" height="200" fill="green" mask="url(#mask1b)"/>
+</g>
+<script>
+var translate = document.getElementsByTagName('svg')[0].currentTranslate;
+translate.x = -75;
+</script>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-panning-002.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-panning-002.svg
new file mode 100644
index 0000000000..e5e426789f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-nested-clip-path-panning-002.svg
@@ -0,0 +1,56 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Panning with clipPath and mask nesting 2</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-nested-clip-path-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">Multiple references between clipPath and
+ mask elements. The current viewport gets translated by panning. You
+ should see a green square with 4 equally sized and positioned white squares
+ in it.</desc>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <rect x="0.1" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.1" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip2" clipPathUnits="objectBoundingBox">
+ <rect x="0.6" y="0.1" width="0.3" height="0.3"/>
+ <rect x="0.6" y="0.6" width="0.3" height="0.3"/>
+</clipPath>
+
+<clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip1)"/>
+ <rect x="0" y="0" width="1" height="1" clip-path="url(#clip2)"/>
+</clipPath>
+
+<mask id="mask1a" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip1)" />
+</mask>
+
+<mask id="mask1b" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white"/>
+ <rect x="0" y="0" width="1" height="1" fill="black" clip-path="url(#clip2)" />
+</mask>
+
+<mask id="mask2" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white" mask="url(#mask1a)"/>
+</mask>
+
+<mask id="mask3" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white" mask="url(#mask1b)"/>
+</mask>
+
+<g mask="url(#mask3)" transform="translate(75, 0)">
+ <rect width="200" height="200" fill="green" mask="url(#mask2)"/>
+</g>
+<script>
+var translate = document.getElementsByTagName('svg')[0].currentTranslate;
+translate.x = -75;
+</script>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-objectboundingbox-content-clip-transform.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-objectboundingbox-content-clip-transform.svg
new file mode 100644
index 0000000000..fc1f768878
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-objectboundingbox-content-clip-transform.svg
@@ -0,0 +1,23 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: mask with objectBoundingBox gets clipped 1</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-content-clip-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The mask element with
+ maskContentUnits="objectBoundingBox" gets clipped. The clipping path has a
+ transform that scales the content down. You should see a full green circle.
+ </desc>
+</g>
+<clipPath id="clip">
+ <circle cx="50" cy="50" r="25" transform="scale(0.01 0.01)"/>
+</clipPath>
+<mask id="mask" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0.25" y="0.25" width="0.5" height="0.5" fill="white" clip-path="url(#clip)"/>
+</mask>
+<rect x="0" y="0" height="200" width="200" fill="green" mask="url(#mask)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-objectboundingbox-content-clip.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-objectboundingbox-content-clip.svg
new file mode 100644
index 0000000000..a8d8a12dc0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-objectboundingbox-content-clip.svg
@@ -0,0 +1,23 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: mask with objectBoundingBox gets clipped 2</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-content-clip-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The mask element with
+ maskContentUnits="objectBoundingBox" gets clipped. The clipping path has a
+ coordinates in the mask's user space. You should see a full green circle.
+ </desc>
+</g>
+<clipPath id="clip">
+ <circle cx="0.5" cy="0.5" r="0.25"/>
+</clipPath>
+<mask id="mask" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0.25" y="0.25" width="0.5" height="0.5" fill="white" clip-path="url(#clip)"/>
+</mask>
+<rect x="0" y="0" height="200" width="200" fill="green" mask="url(#mask)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-userspaceonuse-content-clip-transform.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-userspaceonuse-content-clip-transform.svg
new file mode 100644
index 0000000000..b979ff312a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-userspaceonuse-content-clip-transform.svg
@@ -0,0 +1,23 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: mask with userSpaceOnUse gets clipped 1</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-content-clip-002-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The mask element with
+ maskContentUnits="userSpaceOnUse" gets clipped. The clipping path has a
+ transform that scales the content down. You should see a full green circle.
+ </desc>
+</g>
+<clipPath id="clip" clipPathUnits="userSpaceOnUse">
+ <circle cx="50" cy="50" r="25" transform="scale(0.01 0.01)"/>
+</clipPath>
+<mask id="mask" x="0" y="0" width="200" height="200" maskUnits="userSpaceOnUse" maskContentUnits="objectBoundingBox">
+ <rect x="0.25" y="0.25" width="0.5" height="0.5" fill="white" clip-path="url(#clip)"/>
+</mask>
+<rect x="0" y="0" height="200" width="200" fill="green" mask="url(#mask)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-userspaceonuse-content-clip.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-userspaceonuse-content-clip.svg
new file mode 100644
index 0000000000..c9f3cf8f69
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/mask-userspaceonuse-content-clip.svg
@@ -0,0 +1,23 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: mask with userSpaceOnUse gets clipped 2</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-clipping-paths"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-content-clip-001-ref.svg" />
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The mask element with
+ maskContentUnits="userSpaceOnUse" gets clipped. The clipping path has a
+ coordinates in the mask's user space. You should see a full green circle.
+ </desc>
+</g>
+<clipPath id="clip" clipPathUnits="userSpaceOnUse">
+ <circle cx="0.5" cy="0.5" r="0.25"/>
+</clipPath>
+<mask id="mask" x="0" y="0" width="200" height="200" maskUnits="userSpaceOnUse" maskContentUnits="objectBoundingBox">
+ <rect x="0.25" y="0.25" width="0.5" height="0.5" fill="white" clip-path="url(#clip)"/>
+</mask>
+<rect x="0" y="0" height="200" width="200" fill="green" mask="url(#mask)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-circle-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-circle-001-ref.svg
new file mode 100644
index 0000000000..56b7fbeef0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-circle-001-ref.svg
@@ -0,0 +1,10 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<clipPath id="clip1" clipPathUnits="objectBoundingBox">
+ <circle cx="0.25" cy="0.25" r="0.25"/>
+</clipPath>
+<rect width="200" height="200" fill="green" clip-path="url(#clip1)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-001-ref.svg
new file mode 100644
index 0000000000..eaeb6b2b56
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-001-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<polygon points="0 0, 150 0, 150 150, 0 150, 0 25, 125 25, 125 125, 25 125, 25 25, 0 25" fill-rule="evenodd" fill="green"/>
+<polygon points="50 50, 200 50, 200 200, 50 200, 50 75, 175 75, 175 175, 75 175, 75 75, 50 75" fill-rule="nonzero" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-002-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-002-ref.svg
new file mode 100644
index 0000000000..d6c87cd139
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-002-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<polygon points="0 0, 150 0, 150 150, 0 150, 0 25, 125 25, 125 125, 25 125, 25 25, 0 25" fill-rule="nonzero" fill="green"/>
+<polygon points="50 50, 200 50, 200 200, 50 200, 50 75, 175 75, 175 175, 75 175, 75 75, 50 75" fill-rule="nonzero" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-003-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-003-ref.svg
new file mode 100644
index 0000000000..3247b87a6b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-003-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<polygon points="0 0, 150 0, 150 150, 0 150, 0 25, 125 25, 125 125, 25 125, 25 25, 0 25" fill-rule="nonzero" fill="green"/>
+<polygon points="50 50, 200 50, 200 200, 50 200, 50 75, 175 75, 175 175, 75 175, 75 75, 50 75" fill-rule="evenodd" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-004-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-004-ref.svg
new file mode 100644
index 0000000000..8a25ffebe6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-clip-rule-004-ref.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg">
+ <polygon points="0 0, 150 0, 150 150, 0 150, 0 25, 125 25, 125 125, 25 125, 25 25, 0 25" fill-rule="evenodd" fill="green"/>
+ <polygon points="50 50, 200 50, 200 200, 50 200, 50 75, 175 75, 175 175, 75 175, 75 75, 50 75" fill-rule="evenodd" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-content-clip-004-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-content-clip-004-ref.svg
new file mode 100644
index 0000000000..269d289b4a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-content-clip-004-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+ <g id="testmeta">
+ <title>CSS Reference</title>
+ <html:link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au"/>
+ <metadata class="flags">svg</metadata>
+ </g>
+ <rect width="100" height="100" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-ellipse-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-ellipse-001-ref.svg
new file mode 100644
index 0000000000..2532eb3c1b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-ellipse-001-ref.svg
@@ -0,0 +1,12 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<defs>
+<clipPath id="clip">
+ <ellipse cx="100" cy="75" rx="100" ry="75"/>
+</clipPath>
+</defs>
+<rect width="200" height="150" fill="green" clip-path="url(#clip)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-invisible-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-invisible-ref.svg
new file mode 100644
index 0000000000..15cfd5fdca
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-invisible-ref.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-negative-scale-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-negative-scale-ref.svg
new file mode 100644
index 0000000000..be24efa8e8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-negative-scale-ref.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<rect width="90" height="90" fill="green"/>
+<rect x="40" y="40" width="50" height="50" fill="blue"/>
+<rect x="110" width="90" height="90" fill="green"/>
+<rect x="110" y="40" width="50" height="50" fill="blue"/>
+<rect y="110" width="90" height="90" fill="green"/>
+<rect x="40" y="110" width="50" height="50" fill="blue"/>
+<rect x="110" y="110" width="90" height="90" fill="green"/>
+<rect x="110" y="110" width="50" height="50" fill="blue"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-on-marker-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-on-marker-001-ref.svg
new file mode 100644
index 0000000000..693c72e429
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-on-marker-001-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<rect x="50" y="50" width="100" height="100" fill="green"/>
+<rect x="50" y="50" width="50" height="50" fill="blue"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-on-marker-002-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-on-marker-002-ref.svg
new file mode 100644
index 0000000000..21cf9cd7cc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-on-marker-002-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<rect x="50" y="50" width="100" height="100" fill="green"/>
+<rect width="100" height="100" fill="blue"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-precision-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-precision-001-ref.svg
new file mode 100644
index 0000000000..4c83c9def7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-precision-001-ref.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<defs>
+ <g id="paths">
+ <path d="M10 10 h20 v20 h-20 v-20 m1 1 v18 h18 v-18 h-18"/>
+ <rect x="19" y="19" width="2" height="2" />
+ <rect x="5.51" y="0.51" width="2" height="32.3" fill="white"/>
+ <rect x="35.4" y="0.51" width="2" height="32.3" fill="white"/>
+ </g>
+</defs>
+<use xlink:href="#paths" fill="green"/>
+<use xlink:href="#paths" fill="green" x="30"/>
+<use xlink:href="#paths" fill="green" x="60"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-recursion-002-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-recursion-002-ref.svg
new file mode 100644
index 0000000000..6eb3cb155c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-recursion-002-ref.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<rect x="50" width="50" height="50" fill="red" />
+<rect x="50" y="150" width="50" height="50" fill="red"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-shape-inset-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-shape-inset-001-ref.svg
new file mode 100644
index 0000000000..e458ad994a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-shape-inset-001-ref.svg
@@ -0,0 +1,12 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<defs>
+<clipPath id="clip">
+ <rect x="20" y="20" width="160" height="160" rx="20" ry="20"/>
+</clipPath>
+</defs>
+<rect width="200" height="200" fill="green" clip-path="url(#clip)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-001-ref.svg
new file mode 100644
index 0000000000..8ddfdaa723
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-001-ref.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<polygon points="25 25, 175 25, 175 175, 25 175, 25 50, 150 50, 150 150, 50 150, 50 50, 25 50" fill-rule="nonzero" fill="green"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-002-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-002-ref.svg
new file mode 100644
index 0000000000..e8e03bf051
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-002-ref.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<rect x="50" y="50" width="100" height="100" fill="green"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-003-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-003-ref.svg
new file mode 100644
index 0000000000..e7709d44b3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-003-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<rect width="200" height="200" fill="green" />
+</svg>
+
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-hole-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-hole-001-ref.svg
new file mode 100644
index 0000000000..7e1cb1b394
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-square-hole-001-ref.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<polygon points="25 25, 175 25, 175 175, 25 175, 25 50, 150 50, 150 150, 50 150, 50 50, 25 50" fill-rule="evenodd" fill="green"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-text-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-text-001-ref.svg
new file mode 100644
index 0000000000..4b3f84b8d8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-text-001-ref.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<text x="20" y="150" fill="green" style="font-size:60px; font-weight:bold;">CLIP</text>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-text-002-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-text-002-ref.svg
new file mode 100644
index 0000000000..fccd7638af
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-text-002-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<text x="20" y="150" fill="green" style="font-size:60px; font-weight:bold;">CLIP</text>
+<polygon points="0 0, 200 0, 200 200, 0 200, 0 50, 150 50, 150 150, 50 150, 50 50, 0 50" fill-rule="evenodd" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-text-003-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-text-003-ref.svg
new file mode 100644
index 0000000000..fa2cb815e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/clip-path-text-003-ref.svg
@@ -0,0 +1,10 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<clipPath id="clip2">
+ <rect x="50" y="50" width="100" height="100"/>
+</clipPath>
+<text x="20" y="150" style="font-size:60px; font-weight:bold;" clip-path="url(#clip2)" fill="green">CLIP</text>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-and-nested-clip-path-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-and-nested-clip-path-ref.svg
new file mode 100644
index 0000000000..8aed79967e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-and-nested-clip-path-ref.svg
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg">
+ <rect x="100" y="100" width="100" height="100" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-content-clip-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-content-clip-001-ref.svg
new file mode 100644
index 0000000000..0aa5233304
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-content-clip-001-ref.svg
@@ -0,0 +1,10 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<mask id="mask" x="0" y="0" width="1" height="1">
+ <circle cx="100" cy="100" r="50" fill="white"/>
+</mask>
+<rect x="0" y="0" height="200" width="200" fill="green" mask="url(#mask)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-content-clip-002-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-content-clip-002-ref.svg
new file mode 100644
index 0000000000..4da47823b6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-content-clip-002-ref.svg
@@ -0,0 +1,10 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<mask id="mask" x="0" y="0" width="1" height="1">
+ <circle cx="10000" cy="10000" r="5000" fill="white" transform="scale(0.01 0.01)"/>
+</mask>
+<rect x="0" y="0" height="200" width="200" fill="green" mask="url(#mask)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-nested-clip-path-001-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-nested-clip-path-001-ref.svg
new file mode 100644
index 0000000000..e080c95e18
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-nested-clip-path-001-ref.svg
@@ -0,0 +1,11 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<rect width="200" height="200" fill="green"/>
+<rect x="20" y="20" width="60" height="60" fill="white"/>
+<rect x="120" y="20" width="60" height="60" fill="white"/>
+<rect x="20" y="120" width="60" height="60" fill="white"/>
+<rect x="120" y="120" width="60" height="60" fill="white"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-nested-clip-path-002-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-nested-clip-path-002-ref.svg
new file mode 100644
index 0000000000..7b54566651
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-nested-clip-path-002-ref.svg
@@ -0,0 +1,10 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<rect x="20" y="20" width="60" height="60" fill="green"/>
+<rect x="120" y="20" width="60" height="60" fill="green"/>
+<rect x="20" y="120" width="60" height="60" fill="green"/>
+<rect x="120" y="120" width="60" height="60" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-nested-clip-path-003-ref.svg b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-nested-clip-path-003-ref.svg
new file mode 100644
index 0000000000..01330054c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path-svg-content/reference/mask-nested-clip-path-003-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml" width="10000" height="400">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+</g>
+<rect x="99" width="101" height="100" fill="green"/>
+<rect x="299" width="101" height="100" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-ref.html
new file mode 100644
index 0000000000..829055a945
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-ref.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+
+<style>
+ .green {
+ background-color: green;
+ position: fixed;
+ left: 0px;
+ top: 0px;
+ width: 200px;
+ height: 200px;
+ }
+
+</style>
+
+<body>
+ <div class="green"></div>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-reverse.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-reverse.html
new file mode 100644
index 0000000000..7525f67450
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-reverse.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-custom-timing-function-ref.html">
+<!--
+ Test that ensures that the bounding rect for a clip path animation is not
+ limited to the size of the largest keyframe.
+
+ Test is done by occulsion to prevent flakes. Test succeeds if the extrapolated
+ clip area (green) is large enough to occlude the entire red area.
+
+ This is the reverse of clip-path-animation-custom-timing-fumction.html,
+ and tests extrapolation in the negative direction
+-->
+<style>
+ @keyframes clippath {
+ 0% {
+ clip-path: inset(45% 45%);
+ }
+
+ 25% {
+ clip-path: inset(49% 459);
+ }
+
+ 50% {
+ clip-path: inset(45% 45%);
+ }
+
+ 75% {
+ clip-path: inset(40% 40%);
+ animation-timing-function: cubic-bezier(0, -9, 1, -9);
+ /* Test that the correct keyframe's timing function is being used. */
+ }
+
+ 100% {
+ clip-path: inset(45% 45%);
+ }
+ }
+
+ .green {
+ background-color: green;
+ position: fixed;
+ left: 0px;
+ top: 0px;
+ width: 200px;
+ height: 200px;
+ }
+
+ /* for this test to succeed, the red rect needs to be entirely
+ occluded by the inner green rect, requiring extrapolation
+ beyond the largest keyframe. */
+ .red {
+ background-color: red;
+ position: fixed;
+ left: 50px;
+ top: 50px;
+ width: 100px;
+ height: 100px;
+ }
+
+ .anim {
+ animation: clippath 10000000s -8750000s
+ /* halfway between the second to last and last keyframes.*/
+ ;
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="green">
+ <div class="red">
+ <div class="green anim"></div>
+ </div>
+ </div>
+
+ <script>
+ document.getAnimations()[0].ready.then(takeScreenshot);
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function.html
new file mode 100644
index 0000000000..e73f01bc40
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function.html
@@ -0,0 +1,78 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-custom-timing-function-ref.html">
+<!--
+ Test that ensures that the bounding rect for a clip path animation is not
+ limited to the size of the largest keyframe.
+
+ Test is done by occulsion to prevent flakes. Test succeeds if the extrapolated
+ clip area (green) is large enough to occlude the entire red area.
+-->
+<style>
+ @keyframes clippath {
+ 0% {
+ clip-path: inset(45% 45%);
+ }
+
+ 25% {
+ clip-path: inset(40% 40%);
+ }
+
+ 50% {
+ clip-path: inset(45% 45%);
+ }
+
+ 75% {
+ clip-path: inset(40% 40%);
+ }
+
+ 100% {
+ clip-path: inset(45% 45%);
+ }
+ }
+
+ .green {
+ background-color: green;
+ position: fixed;
+ left: 0px;
+ top: 0px;
+ width: 200px;
+ height: 200px;
+ }
+
+ /* for this test to succeed, the red rect needs to be entirely
+ occluded by the inner green rect, requiring extrapolation
+ beyond the largest keyframe. */
+ .red {
+ background-color: red;
+ position: fixed;
+ left: 50px;
+ top: 50px;
+ width: 100px;
+ height: 100px;
+ }
+
+ .anim {
+ animation: clippath 10000000s -1250000s
+ /* halfway between the first and second keyframes. */
+ ;
+ animation-timing-function: cubic-bezier(0, 9, 1, 9);
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="green">
+ <div class="red">
+ <div class="green anim"></div>
+ </div>
+ </div>
+
+ <script>
+ document.getAnimations()[0].ready.then(takeScreenshot);
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-filter-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-filter-ref.html
new file mode 100644
index 0000000000..5bb9a9c722
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-filter-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ filter: blur(5px);
+ clip-path: circle(75% at 75% 75%);
+}
+</style>
+<body>
+<div class="container"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-filter.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-filter.html
new file mode 100644
index 0000000000..cbfa8baaa7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-filter.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-filter-ref.html">
+<meta name="fuzzy" content="maxDifference=0-10; totalPixels=0-150">
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ filter: blur(5px);
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0,1,1,0) -500000s;
+}
+@keyframes clippath {
+ 0% { clip-path: circle(50% at 50% 50%); }
+ 100% { clip-path: circle(100% at 100% 100%); }
+}
+</style>
+<script src="/common/reftest-wait.js"></script>
+<body>
+<div class="container"></div>
+
+<script>
+document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+});
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position-ref.html
new file mode 100644
index 0000000000..2a21cc445c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position-ref.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<style>
+ .container {
+ position: fixed;
+ top: 100px;
+ left: 100px;
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: circle(200% at 35% 35%);
+ }
+
+ .big {
+ position: absolute;
+ top: 100px;
+ width: 500px;
+ height: 500px;
+ background-color: blue;
+ }
+</style>
+
+<body>
+ <div class="container">
+ <div class="big"></div>
+ </div>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position-rounding-error-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position-rounding-error-ref.html
new file mode 100644
index 0000000000..a069e4d3ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position-rounding-error-ref.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<style>
+ .container {
+ position: fixed;
+ width: 70px;
+ height: 126px;
+ background-color: green;
+ clip-path: inset(5% 5%)
+ }
+
+</style>
+
+<body>
+ <div class="container"></div>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position-rounding-error.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position-rounding-error.html
new file mode 100644
index 0000000000..12d984b32a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position-rounding-error.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-fixed-position-rounding-error-ref.html">
+<!--
+ Test that clip paths on elements with position: fixed draw correctly,
+ even in scenarios that involve partial pixels
+
+ Currently uses fuzzy diff because of crbug.com/1249071
+-->
+<style>
+ .container {
+ background-color: green;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0, 1, 1, 0) -500000s;
+ position: fixed;
+ width: 70px;
+ height: 126px;
+ }
+
+ @keyframes clippath {
+ 0% {
+ clip-path: inset(0% 0%);
+ }
+
+ 100% {
+ clip-path: inset(10% 10%);
+ }
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="container"></div>
+
+ <script>
+ document.getAnimations()[0].ready.then(takeScreenshot);
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position.html
new file mode 100644
index 0000000000..a9f278d883
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fixed-position.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta name=fuzzy content="0-10;0-150">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-fixed-position-ref.html">
+<!--
+ Test that clip paths on elements with position: fixed draw correctly,
+ including clipping children that are out of bounds.
+-->
+<style>
+ .container {
+ width: 100px;
+ height: 100px;
+ position: fixed;
+ top: 100px;
+ left: 100px;
+ background-color: green;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0, 1, 1, 0) -500000s;
+ }
+
+ .big {
+ position: absolute;
+ top: 100px;
+ width: 500px;
+ height: 500px;
+ background-color: blue;
+ }
+
+ @keyframes clippath {
+ 0% {
+ clip-path: circle(50% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: circle(350% at 20% 20%);
+ }
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="container">
+ <div class="big"></div>
+ </div>
+
+ <script>
+ document.getAnimations()[0].ready.then(takeScreenshot);
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fragmented-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fragmented-ref.html
new file mode 100644
index 0000000000..8883679aca
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fragmented-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<div style="columns: 2; width: 200px; height: 100px;">
+ <div style="background-color: blue; height: 100px;clip-path: circle(25% at 50% 50%);"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fragmented.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fragmented.html
new file mode 100644
index 0000000000..470a2788cc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-fragmented.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-fragmented-ref.html">
+<style>
+ @keyframes clippath {
+ 0% {
+ clip-path: circle(5% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: circle(45% at 50% 50%);
+ }
+ }
+
+ .outer {
+ columns: 2;
+ width: 200px;
+ height: 100px;
+ }
+
+ .inner {
+ background-color: blue;
+ animation: clippath 1000000s cubic-bezier(0, 1, 1, 0) -500000s;
+ height: 100px;
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="outer">
+ <div class="inner">
+ </div>
+ </div>
+
+ <script>
+ takeScreenshot();
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes1-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes1-ref.html
new file mode 100644
index 0000000000..cbfebddcdc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes1-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: circle(50% at 50% 50%);
+}
+</style>
+<body>
+<div class="container"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes1.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes1.html
new file mode 100644
index 0000000000..88c6862aa9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes1.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-incompatible-shapes1-ref.html">
+<meta name=fuzzy content="0-255;0-2">
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ /* Use a long animation that start at 30% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0,1,1,0) -300000s;
+}
+@keyframes clippath {
+ 0% { clip-path: circle(50% at 50% 50%); }
+ 100% { clip-path: ellipse(10% 20% at 50% 50%); }
+}
+</style>
+<script src="/common/reftest-wait.js"></script>
+<body>
+<div class="container"></div>
+
+<script>
+// This test ensures that when selected keyframe shapes are incompatible
+// and progress is less than 0.5, "from" keyframe is selected as a result.
+document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+});
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes2-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes2-ref.html
new file mode 100644
index 0000000000..6cd7e76774
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes2-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<style>
+.container {
+ width: 300px;
+ height: 300px;
+ background-color: green;
+ clip-path: path('M 100 100 L 200 0 L 200 200 L 0 120 z');
+}
+</style>
+<body>
+<div class="container"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes2.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes2.html
new file mode 100644
index 0000000000..f2aa4964ad
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-incompatible-shapes2.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-incompatible-shapes2-ref.html">
+<meta name=fuzzy content="0-255;0-300">
+<style>
+.container {
+ width: 300px;
+ height: 300px;
+ background-color: green;
+ /* Use a long animation that start at 60% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0,1,1,0) -600000s;
+}
+@keyframes clippath {
+ 0% { clip-path: circle(50% at 50% 50%); }
+ 100% { clip-path: path('M 100 100 L 200 0 L 200 200 L 0 120 z'); }
+}
+</style>
+<script src="/common/reftest-wait.js"></script>
+<body>
+<div class="container"></div>
+
+<script>
+// This test ensures that when selected keyframe shapes are incompatible
+// and progress >= 0.5, "to" keyframe is selected as a result.
+document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+});
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-missing-0-percent-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-missing-0-percent-ref.html
new file mode 100644
index 0000000000..200edcd038
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-missing-0-percent-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<style>
+ .container {
+
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: circle(15% at 50% 50%);
+ }
+</style>
+
+<body>
+ <div class="container"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-missing-0-percent.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-missing-0-percent.html
new file mode 100644
index 0000000000..4d4fee1b5b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-missing-0-percent.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-missing-0-percent-ref.html">
+<style>
+ .container {
+ /*TODO(crbug.com/1349062): Support animation keyframes without 0% or 100%.*/
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ clip-path: circle(5% at 50% 50%);
+ animation: clippath 1000000s cubic-bezier(0, 1, 1, 0) -400000s;
+ }
+
+ @keyframes clippath {
+ 80% {
+ clip-path: circle(25% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: circle(50% at 50% 50%);
+ }
+ }
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="container"></div>
+
+ <script>
+ document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+ });
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-non-keyframe-timing-function-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-non-keyframe-timing-function-ref.html
new file mode 100644
index 0000000000..d351f80a26
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-non-keyframe-timing-function-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<style>
+ .container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: circle(50% at 50% 50%);
+ }
+
+</style>
+
+<body>
+ <div class="container"></div>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-non-keyframe-timing-function.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-non-keyframe-timing-function.html
new file mode 100644
index 0000000000..9e4eb01943
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-non-keyframe-timing-function.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta name=fuzzy content="0-5;0-5">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-non-keyframe-timing-function-ref.html">
+<style>
+ .container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="container"></div>
+
+ <script>
+ document.querySelector('.container').animate([
+ // 1st keyframe must have a non-linear easing function or the animation
+ // will extrapolate based on the animation-wide timing function
+ { clipPath: 'circle(20% at 20% 20%)', easing: 'ease' },
+ { clipPath: 'circle(50% at 50% 50%)' }
+ ], {
+ easing: 'cubic-bezier(0, 2, 1, 2)',
+ duration: 1000000,
+ delay: -500000
+ });
+ document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+ });
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-none-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-none-ref.html
new file mode 100644
index 0000000000..f47e9f31b0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-none-ref.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<style>
+ .target {
+ background-color: blue;
+ width: 100px;
+ height: 100px;
+ }
+
+ .outofbounds {
+ position: absolute;
+ top: 200px;
+ left: 200px;
+ height: 10px;
+ width: 10px;
+ background-color: blue
+ }
+</style>
+<div class="target">
+ <div class="outofbounds"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-none.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-none.html
new file mode 100644
index 0000000000..73b8a47335
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-none.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-none-ref.html">
+<!--
+ This test verifies that
+ 1) clip-path: none in an animation does not cause a crash
+ 2) that clip-path: none displays correctly for an animation
+-->
+<style>
+ @keyframes clippath {
+ 0% {
+ clip-path: inset(25% 25%);
+ }
+
+ 100% {
+ clip-path: none;
+ }
+ }
+
+ .target {
+ animation: clippath 100000s infinite -50000s;
+ background-color: blue;
+ width: 100px;
+ height: 100px;
+ }
+
+ /*
+ * Ensure that clip-path: none is truly none, and not a rectangle that
+ * encompasses area of the parent
+ */
+ .outofbounds {
+ position: absolute;
+ top: 200px;
+ left: 200px;
+ height: 10px;
+ width: 10px;
+ background-color: blue
+ }
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="target">
+ <div class="outofbounds"></div>
+ </div>
+ <script>
+ document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+ });
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-overflow-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-overflow-ref.html
new file mode 100644
index 0000000000..154a56d5f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-overflow-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<style>
+.container {
+ width: 200px;
+ height: 200px;
+ background-color: green;
+ border: 20px solid black;
+ clip-path: circle(120px at 120px 120px);
+}
+</style>
+<body>
+<div class="container"><div class="container"></div></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-overflow.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-overflow.html
new file mode 100644
index 0000000000..09a44fb3aa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-overflow.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-overflow-ref.html">
+<meta name=fuzzy content="0-255;0-800">
+<style>
+.container {
+ width: 200px;
+ height: 200px;
+ background-color: green;
+ border: 20px solid black;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0,1,1,0) -500000s;
+}
+@keyframes clippath {
+ 0% { clip-path: circle(130px at 130px 130px); }
+ 100% { clip-path: circle(110px at 110px 110px); }
+}
+</style>
+<script src="/common/reftest-wait.js"></script>
+<body>
+<div class="container"><div class="container"></div></div>
+
+<script>
+document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+});
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-ref.html
new file mode 100644
index 0000000000..b548c5d590
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: circle(35% at 35% 35%);
+}
+</style>
+<body>
+<div class="container"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg-ref.html
new file mode 100644
index 0000000000..6cc3b4d58b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg-ref.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+<style>
+ .clipped {
+ background-color: green;
+ stroke: black;
+ stroke-width: 3;
+ fill: red;
+ clip-path: circle(35% at 50% 50%);
+ }
+
+ .svg {
+ width: 100px;
+ height: 100px;
+ }
+
+</style>
+
+<body>
+ <svg class="svg">
+ <circle class="clipped" cx="50" cy="50" r="40" />
+ </svg>
+
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg-zoom-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg-zoom-ref.html
new file mode 100644
index 0000000000..8d620ceb69
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg-zoom-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+<style>
+ .clipped {
+ background-color: green;
+ stroke: black;
+ stroke-width: 3;
+ fill: red;
+ clip-path: circle(35% at 50% 50%);
+ }
+
+ .svg {
+ width: 100px;
+ height: 100px;
+ zoom: 1.25;
+ }
+
+</style>
+
+<body>
+ <svg class="svg">
+ <circle class="clipped" cx="40" cy="40" r="40" />
+ </svg>
+
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg-zoom.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg-zoom.html
new file mode 100644
index 0000000000..c79c098c62
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg-zoom.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-svg-zoom-ref.html">
+<style>
+ .clipped {
+ background-color: green;
+ stroke: black;
+ stroke-width: 3;
+ fill: red;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0, 1, 1, 0) -500000s;
+ }
+
+ .svg {
+ width: 100px;
+ height: 100px;
+ zoom: 1.25;
+ }
+
+ @keyframes clippath {
+ 0% {
+ clip-path: circle(50% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: circle(20% at 50% 50%);
+ }
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <svg class="svg">
+ <circle class="clipped" cx="40" cy="40" r="40" />
+ </svg>
+
+ <script>
+ document.getAnimations()[0].ready.then(takeScreenshot);
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg.html
new file mode 100644
index 0000000000..676fe5ee57
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-svg.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-svg-ref.html">
+<style>
+ .clipped {
+ background-color: green;
+ stroke: black;
+ stroke-width: 3;
+ fill: red;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0, 1, 1, 0) -500000s;
+ }
+
+ .svg {
+ width: 100px;
+ height: 100px;
+ }
+
+ @keyframes clippath {
+ 0% {
+ clip-path: circle(50% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: circle(20% at 50% 50%);
+ }
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <svg class="svg">
+ <circle class="clipped" cx="50" cy="50" r="40" />
+ </svg>
+
+ <script>
+ document.getAnimations()[0].ready.then(takeScreenshot());
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes1-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes1-ref.html
new file mode 100644
index 0000000000..965d259d26
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes1-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: ellipse(15% 25% at 60% 60%);
+}
+</style>
+<body>
+<div class="container"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes1.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes1.html
new file mode 100644
index 0000000000..61e24e6208
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes1.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-three-keyframes1-ref.html">
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ /* Use a long animation that start at 5% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0,1,1,0) -50000s;
+}
+@keyframes clippath {
+ 0% { clip-path: ellipse(10% 20% at 50% 50%) }
+ 10% {
+ clip-path: ellipse(20% 30% at 70% 70%);
+ animation-timing-function: cubic-bezier(0,1,1,0);
+ }
+ 100% {
+ clip-path: ellipse(10% 20% at 50% 50%);
+ animation-timing-function: cubic-bezier(0,1,1,0);
+ }
+}
+</style>
+<script src="/common/reftest-wait.js"></script>
+<body>
+<div class="container"></div>
+
+<script>
+// This test ensures that we select the correct start and end keyframes for
+// interpolation. In this test, the start delay of the animation makes it
+// jump to 5% right away. So for this test, we would choose the keyframes at
+// 0% and 10% for interpolation.
+document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+});
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes2-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes2-ref.html
new file mode 100644
index 0000000000..afc8c85561
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes2-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<style>
+.container {
+ width: 300px;
+ height: 300px;
+ background-color: green;
+ clip-path: path('M 150 150 L 250 0 L 250 250 L 0 160 z');
+}
+</style>
+<body>
+<div class="container"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes2.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes2.html
new file mode 100644
index 0000000000..b70c136c32
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-three-keyframes2.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-three-keyframes2-ref.html">
+<meta name=fuzzy content="0-255;0-1000">
+<style>
+.container {
+ width: 300px;
+ height: 300px;
+ background-color: green;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0,1,1,0) -500000s;
+}
+@keyframes clippath {
+ 0% {
+ clip-path: path('M 300 300 L 500 0 L 500 500 L 0 300 z');
+ }
+ 10% {
+ clip-path: path('M 100 100 L 200 0 L 200 200 L 0 120 z');
+ animation-timing-function: cubic-bezier(0,1,1,0);
+ }
+ 100% {
+ clip-path: path('M 200 200 L 300 0 L 300 300 L 0 200 z');
+ animation-timing-function: cubic-bezier(0,1,1,0);
+ }
+}
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+<body>
+<div class="container"></div>
+
+<script>
+// The start delay of the animation makes it jump 50% of the animation, which
+// means we would select the keyframes at 10% and 100% for animation. The
+// progress would be (0.5-0.1) / (1-0.1) = 0.44. So a timing function input of
+// 0.44 results in an output of 0.5.
+document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+});
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-zoom-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-zoom-ref.html
new file mode 100644
index 0000000000..99126195a1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-zoom-ref.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<style>
+ .container {
+ width: 80px;
+ height: 80px;
+ zoom: 1.25;
+ background-color: green;
+ clip-path: circle(35% at 35% 35%);
+ }
+
+</style>
+
+<body>
+ <div class="container"></div>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-zoom.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-zoom.html
new file mode 100644
index 0000000000..5573318a51
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation-zoom.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-zoom-ref.html">
+<style>
+ .container {
+ width: 80px;
+ height: 80px;
+ background-color: green;
+ zoom: 1.25;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 10000000s cubic-bezier(0, 1, 1, 0) -5000000s;
+ }
+
+ @keyframes clippath {
+ 0% {
+ clip-path: circle(50% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: circle(20% at 20% 20%);
+ }
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="container"></div>
+
+ <script>
+ document.getAnimations()[0].ready.then(takeScreenshot);
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation.html
new file mode 100644
index 0000000000..cea2ebc7c0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-animation.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-ref.html">
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ animation: clippath 1000000s cubic-bezier(0,1,1,0) -500000s;
+}
+@keyframes clippath {
+ 0% { clip-path: circle(50% at 50% 50%); }
+ 100% { clip-path: circle(20% at 20% 20%); }
+}
+</style>
+<script src="/common/reftest-wait.js"></script>
+<body>
+<div class="container"></div>
+
+<script>
+document.getAnimations()[0].ready.then(() => {
+ takeScreenshot();
+});
+</script>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-transition-custom-timing-function.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-transition-custom-timing-function.html
new file mode 100644
index 0000000000..022b1f0484
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-transition-custom-timing-function.html
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-animation-custom-timing-function-ref.html">
+<style>
+ .transition {
+ clip-path: inset(45%);
+ transition-property: clip-path;
+ transition-duration: 1000000s;
+ transition-timing-function: cubic-bezier(0, 9, 1, 9);
+ transition-delay: -500000s;
+ }
+
+ .green {
+ background-color: green;
+ position: fixed;
+ left: 0px;
+ top: 0px;
+ width: 200px;
+ height: 200px;
+ }
+
+ /* for this test to succeed, the red rect needs to be entirely
+ occluded by the inner green rect, requiring extrapolation
+ beyond the largest keyframe. */
+ .red {
+ background-color: red;
+ position: fixed;
+ left: 50px;
+ top: 50px;
+ width: 100px;
+ height: 100px;
+ }
+
+</style>
+<script src="/common/reftest-wait.js"></script>
+
+<body>
+ <div class="green">
+ <div class="red">
+ <div class="green transition" id="target"></div>
+ </div>
+ </div>
+
+ <script>
+ function update() {
+ document.getElementById('target').style.clipPath = "inset(40%)";
+ requestAnimationFrame(() => {
+ takeScreenshot();
+ });
+ }
+ requestAnimationFrame(function () {
+ requestAnimationFrame(update);
+ });
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-transition-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-transition-ref.html
new file mode 100644
index 0000000000..af164c30f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-transition-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: circle(40% at 40% 40%);
+}
+</style>
+<body>
+<div class="container"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-transition.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-transition.html
new file mode 100644
index 0000000000..16f4de3a1b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/clip-path-transition.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="clip-path-transition-ref.html">
+<style>
+.container {
+ width: 100px;
+ height: 100px;
+ clip-path: circle(50% at 50% 50%);
+ background-color: green;
+ transition-property: clip-path;
+ /* Use a long animation that start at 50% progress where the slope of the
+ selected timing function is zero. By setting up the animation in this way,
+ we accommodate lengthy delays in running the test without a potential drift
+ in the animated property value. This is important for avoiding flakes,
+ especially on debug builds. The screenshots are taken as soon as the
+ animation is ready, thus the long animation duration has no bearing on
+ the actual duration of the test. */
+ transition-duration: 1000000s;
+ transition-timing-function: cubic-bezier(0,1,1,0);
+ transition-delay: -500000s;
+}
+</style>
+<script src="/common/reftest-wait.js"></script>
+<body>
+<div class="container" id="target"></div>
+
+<script>
+function update() {
+ document.getElementById('target').style.clipPath = "circle(30% at 30% 30%)";
+ requestAnimationFrame(() => {
+ takeScreenshot();
+ });
+}
+requestAnimationFrame(function() {
+ requestAnimationFrame(update);
+});
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length1-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length1-ref.html
new file mode 100644
index 0000000000..0feacb50ba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length1-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<style>
+ .container {
+
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: inset(10px 10px);
+ }
+</style>
+
+<body>
+ <div class="container"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length1.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length1.html
new file mode 100644
index 0000000000..d6d04858b5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length1.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="two-clip-path-animation-diff-length1-ref.html">
+<style>
+ .container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ animation: clippath2 10s, clippath1 0.001s;
+ }
+
+ @keyframes clippath1 {
+ 0% {
+ clip-path: circle(10% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: circle(50% at 50% 50%);
+ }
+ }
+
+ @keyframes clippath2 {
+ 0% {
+ clip-path: inset(10px 10px);
+ }
+
+ 100% {
+ clip-path: inset(11px 11px);
+ }
+ }
+</style>
+<script src="/common/reftest-wait.js"></script>
+<script src="../../../../web-animations/testcommon.js"></script>
+
+<body>
+ <div class="container"></div>
+
+ <script>
+ // This test ensures that if we have two different-length animations, when
+ // the one with higher compositing order finishes, the other one would still
+ // run normally.
+ const animations = document.getAnimations();
+ animations[1].finished.then(() => {
+ takeScreenshot();
+ });
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length2-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length2-ref.html
new file mode 100644
index 0000000000..0feacb50ba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length2-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<style>
+ .container {
+
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: inset(10px 10px);
+ }
+</style>
+
+<body>
+ <div class="container"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length2.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length2.html
new file mode 100644
index 0000000000..0d86120ef3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length2.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="two-clip-path-animation-diff-length2-ref.html">
+<style>
+ .container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ animation: clippath2 10s, clippath1 2s 1s;
+ }
+
+ @keyframes clippath1 {
+ 0% {
+ clip-path: circle(10% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: circle(50% at 50% 50%);
+ }
+ }
+
+ @keyframes clippath2 {
+ 0% {
+ clip-path: inset(10px 10px);
+ }
+
+ 100% {
+ clip-path: inset(11px 11px);
+ }
+ }
+</style>
+<script src="/common/reftest-wait.js"></script>
+<script src="../../../../web-animations/testcommon.js"></script>
+
+<body>
+ <div class="container"></div>
+
+ <script>
+ // This test ensures that when there are two animations where one of them has
+ // animation delays, we show the right clip when the delayed animation is not
+ // started yet.
+ const animations = document.getAnimations();
+ Promise.all([animations[0].ready, animations[1].ready]).then(() => {
+ takeScreenshot();
+ });
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length3-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length3-ref.html
new file mode 100644
index 0000000000..853f47f9ba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length3-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<style>
+ .container {
+
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: circle(50% at 50% 50%);
+ }
+</style>
+
+<body>
+ <div class="container"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length3.html b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length3.html
new file mode 100644
index 0000000000..3c8141ad2d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/animations/two-clip-path-animation-diff-length3.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
+<link rel="match" href="two-clip-path-animation-diff-length3-ref.html">
+<style>
+ .container {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ animation: clippath2 10000s, clippath1 2s 0.001s;
+ }
+
+ /* Use un-interpolatable keyframes to force discrete transition */
+ @keyframes clippath1 {
+ 0% {
+ clip-path: circle(50% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: inset(11px 11px);
+ }
+ }
+
+ @keyframes clippath2 {
+ 0% {
+ clip-path: circle(10% at 50% 50%);
+ }
+
+ 100% {
+ clip-path: circle(25% at 50% 50%);
+ }
+ }
+</style>
+<script src="/common/reftest-wait.js"></script>
+<script src="../../../../web-animations/testcommon.js"></script>
+
+<body>
+ <div class="container"></div>
+
+ <script>
+ // This test ensures that when there are two animations where one of them has
+ // animation delays, we show the right clip when the delayed animation is
+ // started.
+ const animations = document.getAnimations();
+ Promise.all([animations[0].ready, animations[1].ready]).then(() => {
+ waitForAnimationFrames(3).then(() => {
+ takeScreenshot();
+ });
+ });
+ </script>
+</body>
+
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-blending-offset-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-blending-offset-ref.html
new file mode 100644
index 0000000000..c2613ac0a6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-blending-offset-ref.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 30px; background: green"></div>
+<div style="width: 30px; height: 70px; background: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-blending-offset.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-blending-offset.html
new file mode 100644
index 0000000000..806904d687
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-blending-offset.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Masking: Test clip-path with mix-blend-mode with offset</title>
+<link rel="author" title="Xianzhu Wang" href="mailto:wangxianzhu@chromium.org">
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+<link rel="match" href="clip-path-blending-offset-ref.html">
+<style>
+div {
+ width: 100px;
+ height: 100px;
+}
+#clip-path {
+ overflow: hidden;
+ background: green;
+ clip-path: polygon(0 0, 100px 0, 100px 30px, 30px 30px, 30px 100px, 0 100px);
+}
+#blend {
+ position: absolute;
+ mix-blend-mode: multiply;
+ left: 40px;
+ top: 50px;
+ background: red;
+}
+</style>
+<div id="clip-path">
+ <div id="blend"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-borderBox-1a.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-borderBox-1a.html
new file mode 100644
index 0000000000..6fedad96fe
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-borderBox-1a.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path border-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path border-box works correctly or not. This test is for clip-path applied to an HTML element.">
+ <style>
+ div {
+ position: absolute;
+ left: 50px;
+ top: 50px;
+ background-color: blue;
+ width: 30px;
+ height: 30px;
+ padding: 10px;
+ border: solid blue 25px;
+ clip-path: circle(farthest-side) border-box;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-borderBox-1b.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-borderBox-1b.html
new file mode 100644
index 0000000000..c253c3c9db
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-borderBox-1b.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path border-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path border-box works correctly or not. This test is for clip-path applied to an SVG element.">
+ <meta name="fuzzy" content="maxDifference=0-60; totalPixels=0-394">
+ </head>
+ <body>
+ <svg width="200" height="200" style="position: absolute; left: 15px; top: 10px;">
+ <rect x="35" y="40" width="100" height="100" fill="blue"
+ clip-path="circle(50%) border-box"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-borderBox-1c.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-borderBox-1c.html
new file mode 100644
index 0000000000..c581a9c546
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-borderBox-1c.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path border-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path border-box works correctly or not. This test is for clip-path applied to an SVG SVG element.">
+ <style>
+ svg {
+ position: absolute;
+ left: 50px;
+ top: 50px;
+ background-color: blue;
+ width: 30px;
+ height: 30px;
+ padding: 10px;
+ border: solid blue 25px;
+ clip-path: circle(farthest-side) border-box;
+ }
+ </style>
+ </head>
+ <body>
+ <svg width="200" height="200">
+ <rect x="0" y="0" width="200" height="200" fill="blue"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-001.html
new file mode 100644
index 0000000000..d38b909a4d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-001.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and circle function with absolute values</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="author" title="Denise White" href="mailto:denisegwhite@outlook.com">
+ <link rel="author" title="Laury Kenton" href="mailto:webshiva@mac.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="reference/clip-path-circle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'circle' for clipping. Test absolute values for arguments. On pass you
+ should see a green circle and no red.">
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; background-color: green; clip-path: circle();"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-002.html
new file mode 100644
index 0000000000..ab672aaa2a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-002.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and circle function with percentage values</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="reference/clip-path-circle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'circle' for clipping. Test percentage values for arguments. If no
+ reference box was specified, percentage is relative to border-box. On pass
+ there should be a green circle.">
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; background-color: green; clip-path: circle(50% at 50% 50%);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-003.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-003.html
new file mode 100644
index 0000000000..6c6eadb8e9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-003.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and circle function with percentage radius</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="reference/clip-path-circle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'circle' for clipping. Test percentage value as argument for radius and no
+ position arguments. The circle should be in the center of the element. On
+ pass there should be a green circle.">
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; background-color: green; clip-path: circle(50%);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-004.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-004.html
new file mode 100644
index 0000000000..6244d38ee5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-004.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and circle function with percentage position</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="reference/clip-path-circle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'circle' for clipping. Test percentage value as argument for position and
+ no radius argument. The circle must behave like it has a radius of
+ 'closest-side'. On pass there should be a green circle.">
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; background-color: green; clip-path: circle(at 50%);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-005.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-005.html
new file mode 100644
index 0000000000..bcabc72dc0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-005.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and circle function with closest-side</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="reference/clip-path-circle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'circle' for clipping. The circle has a radius of 'closest-side'. This test
+ has a squred div-box. Therefore, 'closest-side', 50% and 'farthest-side'
+ show the same behavior. On pass there should be a green circle.">
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; background-color: green; clip-path: circle(closest-side);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-006.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-006.html
new file mode 100644
index 0000000000..9de416a206
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-006.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and circle function with farthest-side</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="reference/clip-path-circle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'circle' for clipping. The circle has a radius of 'farthest-side'. This
+ test has a squred div-box. Therefore, 'closest-side', 50% and
+ 'farthest-side' show the same behavior. On pass there should be a green
+ circle.">
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; background-color: green; clip-path: circle(farthest-side);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-007.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-007.html
new file mode 100644
index 0000000000..7ff3fdd000
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-007.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and circle with closest-side on rectangular div 1</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="reference/clip-path-circle-2-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'circle' for clipping. The clipped div box is twice as wide as it is
+ height. With 'closest-side', there should be a full green circle.">
+ <style type="text/css">
+ body, div {
+ padding: 0;
+ margin: 0;
+ }
+ </style>
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 400px; height: 200px; background-color: green; clip-path: circle(closest-side);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-008.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-008.html
new file mode 100644
index 0000000000..31ae8ee582
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-circle-008.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and circle with closest-side on rectangular div 2</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="reference/clip-path-circle-3-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'circle' for clipping. The clipped div box is twice as high as it is
+ wide. With 'closest-side', there should be a full green circle.">
+ <style type="text/css">
+ body, div {
+ padding: 0;
+ margin: 0;
+ }
+ </style>
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 400px; background-color: green; clip-path: circle(closest-side);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-columns-shape-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-columns-shape-001.html
new file mode 100644
index 0000000000..de13607ad8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-columns-shape-001.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Masking: Test clip-path property in column</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=626097">
+<link rel="match" href="reference/clip-path-columns-shape-001-ref.html">
+<meta name="assert" content="This test ensures that clip-path property works correctly in column layout.">
+<style>
+body { margin: 0; }
+.clipped {
+ background-color: green;
+ border: 5px solid red;
+ -webkit-clip-path: inset(5px);
+ clip-path: inset(5px);
+}
+</style>
+<div style="columns: 2; column-gap: 0; width: 200px; height: 100px">
+ <div style="height: 100px"></div>
+ <div style="height: 90px" class="clipped"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-columns-shape-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-columns-shape-002.html
new file mode 100644
index 0000000000..6bd11a5e49
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-columns-shape-002.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Masking: Test clip-path property with svg clipPath element in column</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=626097">
+<link rel="match" href="reference/clip-path-columns-shape-002-ref.html">
+<meta name="assert" content="This test ensures that clip-path property works correctly in column layout when SVG <clipPath> elements with clipPathUnits='userSpaceOnUse' is referenced.">
+<style>
+body { margin: 0; }
+.clipped {
+ background-color: green;
+ border: 5px solid red;
+ -webkit-clip-path: url(#c);
+ clip-path: url(#c);
+}
+</style>
+<div style="columns: 2; column-gap: 0; width: 200px; height: 100px">
+ <div style="height: 100px"></div>
+ <div style="height: 90px" class="clipped"></div>
+</div>
+<svg>
+ <clipPath id="c" clipPathUnits="userSpaceOnUse">
+ <rect x="5" y="5" width="90" height="90"/>
+ </clipPath>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-contentBox-1a.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-contentBox-1a.html
new file mode 100644
index 0000000000..b10dcbe3ad
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-contentBox-1a.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path content-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path content-box works correctly or not. This test is for clip-path applied to an HTML element.">
+ <meta name="fuzzy" content="maxDifference=0-62; totalPixels=0-420">
+ <style>
+ div {
+ background-color: blue;
+ position: absolute;
+ left: 10px;
+ top: 10px;
+ width: 100px;
+ height: 100px;
+ padding: 40px;
+ clip-path: circle(farthest-side) content-box;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-contentBox-1b.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-contentBox-1b.html
new file mode 100644
index 0000000000..8c2a651766
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-contentBox-1b.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path content-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path content-box works correctly or not. This test is for clip-path applied to an SVG element.">
+ <meta name="fuzzy" content="maxDifference=0-62; totalPixels=0-420">
+ </head>
+ <body>
+ <svg width="200" height="200" style="position: absolute; left: 0px; top: 0px;">
+ <rect x="50" y="50" width="100" height="100" fill="blue"
+ clip-path="circle(50%) content-box"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-contentBox-1c.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-contentBox-1c.html
new file mode 100644
index 0000000000..260e644fc1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-contentBox-1c.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path content-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path content-box works correctly or not.">
+ </head>
+ <style>
+ svg {
+ position: absolute;
+ left: 10px;
+ top: 10px;
+ width: 100px;
+ height: 100px;
+ padding: 40px;
+ clip-path: circle(farthest-side) content-box;
+ }
+ </style>
+ <body>
+ <svg width="200" height="200">
+ <rect x="0" y="0" width="200" height="200" fill="blue"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-descendant-text-mutated-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-descendant-text-mutated-001.html
new file mode 100644
index 0000000000..8753a25f1e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-descendant-text-mutated-001.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>CSS Masking: Test ancestors update as text descendants change</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=901851">
+<link rel="match" href="reference/clip-path-descendant-text-mutated-001-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<meta name="assert" content="This test ensures that ancestors are updated properly when a text descendant of clip path property changes.">
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+<style>
+#target {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ border-right: 100px solid red;
+ clip-path: url(#clip);
+}
+</style>
+<div id="target"></div>
+<svg>
+ <clipPath id="clip">
+ <text id="text" y="80" font-family="Ahem" font-size="100">XX</text>
+ </clipPath>
+</svg>
+<script>
+ waitForAtLeastOneFrame().then(function() {
+ text.firstChild.data = 'X';
+ takeScreenshot();
+ });
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-document-element-will-change.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-document-element-will-change.html
new file mode 100644
index 0000000000..977eaca140
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-document-element-will-change.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<style>
+html {
+ background: red;
+ /* an "L" shape */
+ clip-path: polygon(50px 50px, 100px 50px, 100px 100px, 150px 100px, 150px 150px, 50px 150px);
+ will-change: transform;
+}
+div {
+ width: 500px;
+ height: 500px;
+ background: green;
+}
+</style>
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+<link rel="help" href="https://drafts.fxtf.org/compositing/#rootgroup">
+<link rel="help" href="https://drafts.fxtf.org/compositing/#pagebackdrop">
+<link rel="match" href="reference/clip-path-document-element-ref.html">
+<meta name="assert" content="Clip-path on the document element applies to the root background.
+ The test passes if there is a green 'L' shape without red.">
+<div></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-document-element.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-document-element.html
new file mode 100644
index 0000000000..56f2d5c8eb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-document-element.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<style>
+html {
+ background: red;
+ /* an "L" shape */
+ clip-path: polygon(50px 50px, 100px 50px, 100px 100px, 150px 100px, 150px 150px, 50px 150px);
+}
+div {
+ width: 500px;
+ height: 500px;
+ background: green;
+}
+</style>
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+<link rel="help" href="https://drafts.fxtf.org/compositing/#rootgroup">
+<link rel="help" href="https://drafts.fxtf.org/compositing/#pagebackdrop">
+<link rel="match" href="reference/clip-path-document-element-ref.html">
+<meta name="assert" content="Clip-path on the document element applies to the root background.
+ The test passes if there is a green 'L' shape without red.">
+<div></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-001.html
new file mode 100644
index 0000000000..1381f53cb0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-001.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and external clipPath reference with userSpaceOnUse - 1</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement">
+ <link rel="match" href="reference/clip-path-rectangle-ref.html">
+ <meta name="assert" content="The clip-path property takes an external reference to a clipPath element for clipping.
+ On pass you should see a green box.">
+</head>
+<body>
+ <p>The test passes if there is a green box.</p>
+ <div style="width: 150px; height: 100px; border: solid red 50px; background-color: green; clip-path: url(#clip);"></div>
+
+ <svg>
+ <clipPath id="clip">
+ <rect x="50" y="50" width="150px" height="100" />
+ </clipPath>
+ </svg>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-002.html
new file mode 100644
index 0000000000..6d6d77ceca
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-002.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and external clipPath reference with userSpaceOnUse - 2</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement">
+ <link rel="match" href="reference/clip-path-rectangle-ref.html">
+ <meta name="assert" content="The clip-path property takes an reference to a clipPath element for clipping.
+ On pass you should see a green with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green box.</p>
+ <div style="width: 150px; height: 100px; border: solid red 50px; background-color: green; clip-path: url(#clip);"></div>
+
+ <svg>
+ <clipPath id="clip">
+ <rect x="50" y="50" width="150px" height="100" />
+ </clipPath>
+ </svg>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-003.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-003.html
new file mode 100644
index 0000000000..1eff3b4fce
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-003.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and external clipPath reference with userSpaceOnUse with percentage - 1</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement">
+ <link rel="match" href="reference/clip-path-ref-right-green-ref.html">
+ <meta name="assert" content="The clip-path property takes a reference to a clipPath element for clipping. Percentage values
+ are relative to the viewport for userSpaceOnUse on clipPathUnits.
+ On pass the left half of the site is white and the right half of the site is green.">
+
+ <style>
+ html, body {
+ width: 100%;
+ height: 100%;
+ margin: 0;
+ }
+ </style>
+</head>
+<body>
+ <div style="width: 100%; height: 100%; background-color: green; clip-path: url(#clip); position: absolute;"></div>
+ <p style="position: absolute;">The test passes if the left half of the site is white and the right half of the site is green.</p>
+
+ <svg>
+ <clipPath id="clip">
+ <rect x="50%" y="0" width="50%" height="100%" />
+ </clipPath>
+ </svg>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-004.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-004.html
new file mode 100644
index 0000000000..af65df668f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-element-userSpaceOnUse-004.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and external clipPath reference with userSpaceOnUse with percentage - 2</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement">
+ <link rel="match" href="reference/clip-path-ref-bottom-green-ref.html">
+ <meta name="assert" content="The clip-path property takes a reference to a clipPath element for clipping. Percentage values
+ are relative to the viewport for userSpaceOnUse on clipPathUnits.
+ On pass the top half of the site is white and the bottom half of the site is green.">
+
+ <style>
+ html, body {
+ width: 100%;
+ height: 100%;
+ margin: 0;
+ }
+ </style>
+</head>
+<body>
+ <div style="width: 100%; height: 100%; background-color: green; clip-path: url(#clip); position: absolute;"></div>
+ <p style="position: absolute;">The test passes if the top half of the site is white and the bottom half of the site is green.</p>
+
+ <svg>
+ <clipPath id="clip">
+ <rect x="0" y="50%" width="100%" height="50%" />
+ </clipPath>
+ </svg>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-001.html
new file mode 100644
index 0000000000..197f422ce4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-001.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and ellipse function with absolute values</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-ellipse-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'ellipse' for clipping. Test absolute values for radii and position
+ arguments. On pass you should see a green ellipse.">
+</head>
+<body>
+ <p>The test passes if there is a full green ellipse.</p>
+ <div style="width: 150px; height: 100px; border: solid red 50px; background-color: green; clip-path: ellipse(75px 50px at 125px 100px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-002.html
new file mode 100644
index 0000000000..36f63fc5e9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-002.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and ellipse function with percentage values</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-ellipse-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'ellipse' for clipping. Test percentage values for radii and position
+ arguments. Percentage values are relative to a reference box. If no
+ reference box was specified, percentage values are relative to border-box.
+ On pass you should see a green ellipse.">
+</head>
+<body>
+ <p>The test passes if there is a full green ellipse.</p>
+ <div style="width: 150px; height: 100px; border: solid red 50px; background-color: green; clip-path: ellipse(30% 25% at 50% 50%);"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-003.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-003.html
new file mode 100644
index 0000000000..81ded18292
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-003.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and ellipse function with percentage values on square</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-circle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'ellipse' for clipping. Test percentage values for radii and position
+ arguments. Percentage values are relative to a reference box. If no
+ reference box was specified, percentage values are relative to border-box.
+ On pass there should be a full green circle.">
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; background-color: green; clip-path: ellipse(50% 50% at 50% 50%);"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-004.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-004.html
new file mode 100644
index 0000000000..f62f958fb6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-004.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and ellipse function with different absolute values on square</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-ellipse-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'ellipse' for clipping. Test absolute values for arguments. On pass you
+ should see a green ellipse.">
+</head>
+<body>
+ <p>The test passes if there is a full green ellipse.</p>
+ <div style="width: 200px; height: 200px; background-color: green; clip-path: ellipse(75px 50px at 125px 100px);"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-005.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-005.html
new file mode 100644
index 0000000000..2e819e79b0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-005.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and ellipse function with different percentage values on square</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-ellipse-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'ellipse' for clipping. Test percentage values for radii and position
+ arguments. Percentage values are relative to a reference box. If no
+ reference box was specified, percentage values are relative to border-box.
+ Different values for getting an ellipse from a square. On pass you should
+ see a green ellipse.">
+</head>
+<body>
+ <p>The test passes if there is a full green ellipse.</p>
+ <div style="width: 200px; height: 200px; background-color: green; clip-path: ellipse(37.5% 25% at 62.5% 50%);"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-006.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-006.html
new file mode 100644
index 0000000000..fb20f0243b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-006.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and ellipse function with absolute values</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-ellipse-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'ellipse' for clipping. Test absolute values for radii and position
+ arguments. On pass you should see a green circle.">
+</head>
+<body>
+ <p>The test passes if there is a full green ellipse.</p>
+ <div style="width: 150px; height: 100px; position: absolute; margin: 50px; background-color: green; clip-path: ellipse();"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-007.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-007.html
new file mode 100644
index 0000000000..42d8b451ff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-007.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and ellipse function with no arguments</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-ellipse-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'ellipse' for clipping. If no further arguments were specified, the radii
+ are 'closest-side' each. The position is initialised to the center of the
+ element. On pass there is a full green ellipse.">
+</head>
+<body>
+ <p>The test passes if there is a full green ellipse.</p>
+ <div style="width: 150px; height: 100px; position: absolute; margin: 50px; background-color: green; clip-path: ellipse(farthest-side closest-side);"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-008.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-008.html
new file mode 100644
index 0000000000..12df558fd2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-ellipse-008.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and ellipse function with 50% 50%</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-ellipse-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'ellipse' for clipping. Test percentage values for radii and position
+ arguments. Percentage values are relative to a reference box. If no
+ reference box was specified, percentage values are relative to border-box.
+ Both radii are specified with percentage values. The position is
+ initialised to the center of the element. On pass there is a full green
+ ellipse.">
+</head>
+<body>
+ <p>The test passes if there is a full green ellipse.</p>
+ <div style="width: 150px; height: 100px; position: absolute; margin: 50px; background-color: green; clip-path: ellipse(50% 50%);"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fillBox-1a.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fillBox-1a.html
new file mode 100644
index 0000000000..a210ea99b5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fillBox-1a.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path fill-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path fill-box works correctly or not. This test is for clip-path applied to an SVG SVG element.">
+ <style>
+ svg {
+ position: absolute;
+ left: 40px;
+ top: 40px;
+ background-color: blue;
+ width: 30px;
+ height: 30px;
+ margin: 10px;
+ padding: 10px;
+ border: solid blue 25px;
+ clip-path: circle(farthest-side) fill-box;
+ }
+ </style>
+ </head>
+ <body>
+ <svg width="200" height="200">
+ <rect x="0" y="0" width="200" height="200" fill="blue">
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-filter-order-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-filter-order-ref.html
new file mode 100644
index 0000000000..5fdef1e300
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-filter-order-ref.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Clip-path should be applied after filtering</title>
+<link rel="author" title="Philip Rogers" href="mailto:pdr@chromium.org">
+
+<div>
+ <p>Expected: A green box.<br>
+ There should be no red visible.<br>
+ There should be a crisp, clipped edge around the green box (no blurring).</p>
+</div>
+
+<style>
+ #testcase {
+ position: absolute;
+ width: 200px;
+ height: 200px;
+ background: green;
+ will-change: transform;
+ }
+</style>
+<div id="testcase"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-filter-order.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-filter-order.html
new file mode 100644
index 0000000000..5806e75d53
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-filter-order.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Clip-path should be applied after filtering</title>
+<link rel="author" title="Philip Rogers" href="mailto:pdr@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#placement">
+<link rel="match" href="clip-path-filter-order-ref.html">
+
+<div>
+ <p>Expected: A green box.<br>
+ There should be no red visible.<br>
+ There should be a crisp, clipped edge around the green box (no blurring).</p>
+</div>
+
+<style>
+ #testcase {
+ position: absolute;
+ width: 400px;
+ height: 400px;
+ background: green;
+ will-change: transform;
+ filter: drop-shadow(16px 16px 20px red);
+ clip-path: inset(0px 200px 200px 0px);
+ }
+</style>
+<div id="testcase"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-filter-radius-clips.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-filter-radius-clips.html
new file mode 100644
index 0000000000..f715f0de78
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-filter-radius-clips.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<link rel="help" href="https://www.w3.org/TR/css-masking-1/#clipping-paths">
+<link rel="help" href="https://drafts.csswg.org/css-contain-1/#containment-paint">
+<link rel="match" href="reference/clip-path-filter-radius-clips-ref.html">
+<meta name="assert" content="For crbug.com/1099234, ensure correct clip hierarchy with clip-path, filter and border radius clips">
+<div style="width: 400px; height: 400px; border-radius: 10px; contain: paint">
+ <div style="width: 400px; height: 400px; border-radius: 10px; contain: paint">
+ <div style="width: 100px; height: 10px; will-change: transform; clip-path: circle(50%)"></div>
+ <div style="margin-left: 10px; filter: invert(100%); will-change: filter;
+ width: 100px; height: 100px; background: magenta"></div>
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-nested-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-nested-ref.html
new file mode 100644
index 0000000000..b860304f04
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-nested-ref.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<style>
+ body, html {
+ margin: 0;
+ padding: 0;
+ background: green;
+ }
+
+ .purple-square {
+ background: purple;
+ width: 50px;
+ height: 50px;
+ }
+</style>
+<div class="purple-square"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-nested.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-nested.html
new file mode 100644
index 0000000000..5090bc2aed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-nested.html
@@ -0,0 +1,38 @@
+<!doctype html>
+<title>CSS Test: nested clip-path() inside the same reference frame with position: fixed</title>
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1501111">
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path">
+<link rel="match" href="clip-path-fixed-nested-ref.html">
+<style>
+ body, html {
+ margin: 0;
+ padding: 0;
+ }
+ .outer-clip {
+ height: 100vh;
+ clip-path: inset(0 0 0 0);
+ background: green;
+ }
+ .fixed {
+ position: fixed;
+ }
+ .inner-clip {
+ height: 50px;
+ width: 50px;
+ clip-path: inset(0 0 0 0);
+ }
+ .inner-clip-contents {
+ height: 100px;
+ width: 100px;
+ background: purple;
+ }
+</style>
+<div class="outer-clip">
+ <div class="fixed">
+ <div class="inner-clip">
+ <div class="inner-clip-contents"></div>
+ </div>
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-scroll-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-scroll-ref.html
new file mode 100644
index 0000000000..86aad95935
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-scroll-ref.html
@@ -0,0 +1,6 @@
+<!doctype html>
+<div style="height: 100vh"></div>
+<div style="width: 200px; height: 200px; background: green"></div>
+<script>
+ window.scrollTo(0, 1000);
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-scroll.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-scroll.html
new file mode 100644
index 0000000000..2b6e09b0e8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-fixed-scroll.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<html class="reftest-wait">
+<title>CSS Test: clip-path above position: fixed scrolled</title>
+<link rel="help" href="https://crbug.com/1267676">
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path">
+<link rel="match" href="clip-path-fixed-scroll-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+<div style="height: 100vh"></div>
+<div style="width: 200px; height: 200px; clip-path: inset(0 0 0 0)">
+ <div style="position: fixed; top: 0; left: 0; width: 2000px; height: 2000px; background: green"></div>
+</div>
+<script>
+waitForAtLeastOneFrame().then(() => {
+ scrollTo(0, 1000);
+ takeScreenshot();
+});
+</script>
+</html>
+
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-geometryBox-1-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-geometryBox-1-ref.html
new file mode 100644
index 0000000000..add81e8dfe
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-geometryBox-1-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path geometry box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ </head>
+ <body>
+ <svg width="200" height="200" style="position: absolute; left: 0px; top: 0px;">
+ <circle cx="100" cy="100" r="50" fill="blue"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-geometryBox-2-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-geometryBox-2-ref.html
new file mode 100644
index 0000000000..b9ee9ab63b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-geometryBox-2-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path geometry box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ </head>
+ <body>
+ <svg width="200" height="200" style="position: absolute; left: 0px; top: 0px;">
+ <polygon points="100,50 150,100 150,150 50,150 50,100" fill="blue"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-geometryBox-2.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-geometryBox-2.html
new file mode 100644
index 0000000000..d4c47349d2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-geometryBox-2.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path margin-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-2-ref.html">
+ <meta name="assert" content="Test checks whether clip-path margin-box works correctly or not.">
+ <meta name="fuzzy" content="maxDifference=0-60; totalPixels=0-394">
+ <style>
+ div {
+ position: absolute;
+ left: 0px;
+ top: 0px;
+ background-color: blue;
+ width: 100px;
+ height: 100px;
+ margin: 50px;
+ clip-path: polygon(0% 75%, 50% 25%, 100% 75%) margin-box;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inline-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inline-001.html
new file mode 100644
index 0000000000..76018614ba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inline-001.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>clip-path on inline, horizontal-tb writing-mode</title>
+<link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path" title="5.1 Clipping Shape: the clip-path property">
+<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
+<meta content="ahem" name="flags">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ body {
+ overflow: hidden;
+ }
+ .container {
+ writing-mode: horizontal-tb;
+ padding: 70px 30px;
+ margin: -170px -230px;
+ font: 100px/1 Ahem;
+ line-height: 100px;
+ color: transparent;
+ }
+ .container > span {
+ clip-path: polygon(0% 0%, 50% 0%, 50% 100%, 0% 100%);
+ color: red;
+ }
+ .container > span > span {
+ color: green;
+ }
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div class="container">
+ <br>
+ XX<span><span>X</span>X<br>XXXXX</span>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inline-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inline-002.html
new file mode 100644
index 0000000000..ca8634b903
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inline-002.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>clip-path on inline, vertical-rl writing-mode</title>
+<link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path" title="5.1 Clipping Shape: the clip-path property">
+<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
+<meta content="ahem" name="flags">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ body {
+ overflow: hidden;
+ }
+ .container {
+ writing-mode: vertical-rl;
+ padding: 70px 30px;
+ margin: -270px -130px;
+ font: 100px/1 Ahem;
+ line-height: 100px;
+ color: transparent;
+ }
+ .container > span {
+ clip-path: polygon(0% 0%, 100% 0%, 100% 50%, 0% 50%);
+ color: red;
+ }
+ .container > span > span {
+ color: green;
+ }
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div class="container">
+ <br>
+ XX<span><span>X</span>X<br>XXXXX</span>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inline-003.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inline-003.html
new file mode 100644
index 0000000000..471c54c1c6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inline-003.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>clip-path on inline, vertical-lr writing-mode</title>
+<link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path" title="5.1 Clipping Shape: the clip-path property">
+<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
+<meta content="ahem" name="flags">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ body {
+ overflow: hidden;
+ }
+ .container {
+ writing-mode: vertical-lr;
+ padding: 70px 30px;
+ margin: -270px -130px;
+ font: 100px/1 Ahem;
+ line-height: 100px;
+ color: transparent;
+ }
+ .container > span {
+ clip-path: polygon(0% 0%, 100% 0%, 100% 50%, 0% 50%);
+ color: red;
+ }
+ .container > span > span {
+ color: green;
+ }
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div class="container">
+ <br>
+ XX<span><span>X</span>X<br>XXXXX</span>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inset-round-percent-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inset-round-percent-ref.html
new file mode 100644
index 0000000000..597481d7db
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inset-round-percent-ref.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<style>
+body {
+ margin: 0;
+}
+div {
+ width: 100px;
+ height: 100px;
+ background: deeppink;
+ clip-path: inset(80px 0 0 round 8px);
+}
+</style>
+<div></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inset-round-percent.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inset-round-percent.html
new file mode 100644
index 0000000000..cb0e5ec735
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-inset-round-percent.html
@@ -0,0 +1,19 @@
+<!doctype html>
+<title>inset() with percentages resolves against reference box, not inset rect</title>
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1704742">
+<link rel="help" href="https://drafts.csswg.org/css-shapes/#basic-shape-functions">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="match" href="clip-path-inset-round-percent-ref.html">
+<style>
+body {
+ margin: 0;
+}
+div {
+ width: 100px;
+ height: 100px;
+ background: deeppink;
+ clip-path: inset(80% 0 0 round 8%)
+}
+</style>
+<div></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-localRef-1-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-localRef-1-ref.html
new file mode 100644
index 0000000000..d605e046fc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-localRef-1-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE HTML>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>Reference for clip-path linked to local-ref URL</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <svg height="0" width="0">
+ <defs>
+ <clipPath id="c1">
+ <circle cy="110" cx="137" r="90" />
+ </clipPath>
+ </defs>
+ </svg>
+ <style>
+ div {
+ width: 300px;
+ height: 300px;
+ background-color: blue;
+ clip-path: url(#c1);
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-localRef-1.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-localRef-1.html
new file mode 100644
index 0000000000..e24afbcd6b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-localRef-1.html
@@ -0,0 +1,32 @@
+<!DOCTYPE HTML>
+<html>
+ <head>
+ <head>
+ <base href="http://example.com">
+ <meta charset="utf-8">
+ <title>Testcase for clip-path linked to local-ref URL</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-localRef-1-ref.html">
+ <meta name="assert" content="Test checks after changing base URL, whether fragment URLs works correctly or not.">
+ <svg height="0" width="0">
+ <defs>
+ <clipPath id="c1">
+ <circle cy="110" cx="137" r="90" />
+ </clipPath>
+ </defs>
+ </svg>
+ <style>
+ div {
+ width: 300px;
+ height: 300px;
+ background-color: blue;
+ clip-path: url(#c1);
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-marginBox-1a.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-marginBox-1a.html
new file mode 100644
index 0000000000..009ba674d8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-marginBox-1a.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path margin-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path margin-box works correctly or not. This test is for clip-path applied to an SVG element.">
+ <meta name="fuzzy" content="maxDifference=0-62; totalPixels=0-420">
+ </head>
+ <body>
+ <svg width="200" height="200" style="position: absolute; left: 10px; top: 15px;">
+ <rect x="40" y="35" width="100" height="100" fill="blue"
+ clip-path="circle(50%) margin-box"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-mix-blend-mode-1-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-mix-blend-mode-1-ref.html
new file mode 100644
index 0000000000..12bfbda589
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-mix-blend-mode-1-ref.html
@@ -0,0 +1,29 @@
+<!DOCTYPE HTML>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS clip-path reference</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style>
+ div.foreground {
+ position: absolute;
+ background-color: rgb(0,0,255);
+ z-index: 100;
+ width: 50px;
+ height: 50px;
+ }
+
+ div.background {
+ position: absolute;
+ background-color: rgb(0,255,255);
+ width: 100px;
+ height: 100px;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="foreground"></div>
+ <div class="background"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-mix-blend-mode-1.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-mix-blend-mode-1.html
new file mode 100644
index 0000000000..ff0c376905
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-mix-blend-mode-1.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path with mix-blend-mode</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-mix-blend-mode-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path works with mix-blend-mode correctly or not.">
+ <style>
+ div {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ }
+
+ div.foreground {
+ background-color: rgb(255,0,255);
+ clip-path: url(#top_left);
+ z-index: 100;
+ mix-blend-mode: multiply;
+ }
+
+ div.background {
+ background-color: rgb(0,255,255);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="foreground"></div>
+ <div class="background"></div>
+ <svg height="0" width="0">
+ <defs>
+ <clipPath id="top_left">
+ <rect x="0" y="0" width="50" height="50"/>
+ </clipPath>
+ </defs>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-paddingBox-1a.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-paddingBox-1a.html
new file mode 100644
index 0000000000..493ba7ab05
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-paddingBox-1a.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path padding-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path padding-box works correctly or not. This test is for clip-path applied to an HTML element.">
+ <meta name="fuzzy" content="maxDifference=0-62; totalPixels=0-420">
+ <style>
+ div {
+ position: absolute;
+ left: 50px;
+ top: 50px;
+ background-color: blue;
+ width: 50px;
+ height: 50px;
+ padding: 25px;
+ clip-path: circle(farthest-side) padding-box;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-paddingBox-1b.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-paddingBox-1b.html
new file mode 100644
index 0000000000..d3ea29633e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-paddingBox-1b.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path padding-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path padding-box works correctly or not. This test is for clip-path applied to an SVG element.">
+ <meta name="fuzzy" content="maxDifference=0-62; totalPixels=0-420">
+ </head>
+ <body>
+ <svg width="200" height="200" style="position: absolute; left: 0px; top: 0px;">
+ <rect x="50" y="50" width="100" height="100" fill="blue"
+ clip-path="circle(50%) padding-box"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-paddingBox-1c.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-paddingBox-1c.html
new file mode 100644
index 0000000000..f0c31e39aa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-paddingBox-1c.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path padding-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path padding-box works correctly or not. This test is for clip-path applied to an SVG SVG element.">
+ <style>
+ svg {
+ position: absolute;
+ left: 50px;
+ top: 50px;
+ background-color: blue;
+ width: 50px;
+ height: 50px;
+ padding: 25px;
+ clip-path: circle(farthest-side) padding-box;
+ }
+ </style>
+ </head>
+ <body>
+ <svg width="200" height="200">
+ <rect x="0" y="0" width="200" height="200" fill="blue"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-001.html
new file mode 100644
index 0000000000..ebdfc2297b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-001.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and path function with nonzero fill</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-path">
+ <link rel="match" href="reference/clip-path-path-001-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'path()' for clipping. Test nonzero path function. On pass you should
+ see a green square.">
+</head>
+<style>
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: path(nonzero, 'M10,10h80v80h-80zM25,25h50v50h-50z');
+ }
+</style>
+<body>
+ <p>The test passes if there are a green filled rect.</p>
+ <div id="rect"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-002.html
new file mode 100644
index 0000000000..e3049922eb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-002.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and path function with evenodd fill</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-path">
+ <link rel="match" href="reference/clip-path-path-002-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'path()' for clipping. Test evenodd path function. On pass you should
+ see a hollow green square.">
+</head>
+<style>
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: path(evenodd, 'M10,10h80v80h-80zM25,25h50v50h-50z');
+ }
+</style>
+<body>
+ <p>The test passes if there are a green hollow rect.</p>
+ <div id="rect"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-interpolation-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-interpolation-001.html
new file mode 100644
index 0000000000..9b12621b9d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-interpolation-001.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<head>
+ <title>CSS Masking: Test clip-path nonzero path interpolation</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-path">
+ <link rel="match" href="reference/clip-path-path-interpolation-001-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'path()' for clipping. Test the interpolation of nonzero
+ path function.">
+ <style>
+ @keyframes anim {
+ from {
+ clip-path: path(nonzero, 'M20,20h60 v60 h-60z M30,30 h40 v40 h-40z');
+ }
+ to {
+ clip-path: path(nonzero, 'M50,50h50 v50 h-50z M20,20 h50 v50 h-50z');
+ }
+ }
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ animation: anim 10s -5s paused linear;
+ }
+ </style>
+</head>
+<body>
+ <div id="rect"></div>
+</body>
+<script>
+ requestAnimationFrame(() => {
+ document.documentElement.classList.remove('reftest-wait');
+ });
+</script>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-interpolation-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-interpolation-002.html
new file mode 100644
index 0000000000..4cf6fb4a07
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-interpolation-002.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<head>
+ <title>CSS Masking: Test clip-path evenodd path interpolation</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-path">
+ <link rel="match" href="reference/clip-path-path-interpolation-002-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'path()' for clipping. Test the interpolation of evenodd
+ path function.">
+ <style>
+ @keyframes anim {
+ from {
+ clip-path: path(evenodd, 'M20,20h60 v60 h-60z M30,30 h40 v40 h-40z');
+ }
+ to {
+ clip-path: path(evenodd, 'M50,50h50 v50 h-50z M20,20 h50 v50 h-50z');
+ }
+ }
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ animation: anim 10s -5s paused linear;
+ }
+ </style>
+</head>
+<body>
+ <div id="rect" class="path-evenodd-animation"></div>
+</body>
+<script>
+ requestAnimationFrame(() => {
+ document.documentElement.classList.remove('reftest-wait');
+ });
+</script>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-interpolation-with-zoom.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-interpolation-with-zoom.html
new file mode 100644
index 0000000000..4d54708da1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-interpolation-with-zoom.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+ <title>CSS Masking: Test clip-path nonzero path interpolation with zoom</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-path">
+ <link rel="match" href="reference/clip-path-path-interpolation-with-zoom-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'path()' for clipping. Test the interpolation of nonzero
+ path function.">
+ <style>
+ @keyframes anim {
+ from {
+ clip-path: path(nonzero, 'M20,20h60 v60 h-60z M30,30 h40 v40 h-40z');
+ }
+ to {
+ clip-path: path(nonzero, 'M50,50h50 v50 h-50z M20,20 h50 v50 h-50z');
+ }
+ }
+ #rect {
+ width: 100px;
+ zoom: 3;
+ height: 100px;
+ background-color: green;
+ animation: anim 10s -5s paused linear;
+ }
+ </style>
+ <div id="rect"></div>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-with-zoom-hittest.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-with-zoom-hittest.html
new file mode 100644
index 0000000000..30ceefcbc0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-with-zoom-hittest.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Masking: Test clip-path property hit-testing when the page is zoomed</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-path">
+<meta name="assert" content="The zoomed path is hit-tested correctly">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+ #triangle {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: path(nonzero, 'M0 0, L100 0, L0 100, L 0 0');
+ zoom: 2;
+ }
+</style>
+<div id="triangle"></div>
+<script>
+ test(() => {
+ assert_equals(document.elementFromPoint(20, 20).id, 'triangle')
+ assert_equals(document.elementFromPoint(150, 20).id, 'triangle')
+ assert_equals(document.elementFromPoint(180, 180).tagName, 'BODY')
+ }, 'clip-path: path() hit-test takes zoom into account');
+
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-with-zoom.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-with-zoom.html
new file mode 100644
index 0000000000..5879917f36
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-path-with-zoom.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>CSS Masking: Test clip-path property when the page is zoomed</title>
+<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-path">
+<link rel="match" href="reference/clip-path-path-with-zoom-ref.html">
+<meta name="assert" content="The path gets zoomed together with the content">
+<style>
+ #red {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ background: red;
+ }
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: path(nonzero, 'M0 0, L100 0, L0 100, L 0 0');
+ zoom: 2;
+ }
+</style>
+<div id="red"></div>
+<div id="rect"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-001.html
new file mode 100644
index 0000000000..954f0ba8d9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-001.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and polygon function with absolute values</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-rectangle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'polygon' for clipping. Test absolute value arguments. On pass you should
+ see a green square and no red.">
+</head>
+<body>
+ <p>The test passes if there is a green box.</p>
+ <div style="width: 150px; height: 100px; border: solid red 50px; background-color: green; clip-path: polygon(50px 50px, 200px 50px, 200px 150px, 50px 150px)"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-002.html
new file mode 100644
index 0000000000..ed2ede4fed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-002.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and polygon function with percentage values</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-rectangle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'polygon' for clipping. Test percentage values for arguments. Percentage
+ values are relative to specified reference box. If no reference box was
+ specified, percentage values are relative to border-box. A number of
+ percentage values are specified as coordinates. On pass you should see a
+ green square and no red.">
+</head>
+<body>
+ <p>The test passes if there is a green box.</p>
+ <div style="width: 150px; height: 100px; border: solid red 50px; background-color: green; clip-path: polygon(20% 25%, 80% 25%, 80% 75%, 20% 75%)"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-003.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-003.html
new file mode 100644
index 0000000000..1ecf6803ab
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-003.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and polygon function with absolute and percentage values</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-rectangle-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'polygon' for clipping. Test absolute and percentage value arguments. On
+ pass you should see a green square and no red.">
+</head>
+<body>
+ <p>The test passes if there is a green box.</p>
+ <div style="width: 150px; height: 100px; border: solid red 50px; background-color: green; position: absolute; clip-path: polygon(20% 50px, 200px 25%, 200px 150px, 20% 75%)"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-004.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-004.html
new file mode 100644
index 0000000000..cec947a361
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-004.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and polygon function with fill rule evenodd</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-rectangle-border-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape 'polygon' for clipping.
+ The point list for the polygon creates a 'hole' with the dimension of the background. With
+ the fill rule 'evenodd', this whole is clipped out. The clipping makes the green background
+ of the parent div box visible.
+ On pass you should see a green box with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green box with a blue border.</p>
+ <div style="background-color: green; width: 250px;">
+ <div style="width: 150px; height: 100px; border: solid blue 50px; background-color: red; clip-path: polygon(evenodd, 0 0, 250px 0, 250px 200px, 0 200px, 0 50px, 200px 50px, 200px 150px, 50px 150px, 50px 50px, 0 50px)"></div>
+ </div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-005.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-005.html
new file mode 100644
index 0000000000..b687f2e752
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-005.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and polygon function with fill rule nonzero</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-rectangle-border-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'polygon' for clipping. The point list for the polygon creates a 'hole'
+ with the dimension of the background of the clipped element. With the fill
+ rule 'nonzero', this hole is clipped out. The clipping makes the green
+ background of the parent div box visible. On pass you should see a green
+ square with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green box with a blue border.</p>
+ <div style="background-color: green; width: 250px;">
+ <div style="width: 150px; height: 100px; border: solid blue 50px; background-color: red; clip-path: polygon(nonzero, 0 0, 250px 0, 250px 200px, 0 200px, 0 50px, 50px 50px, 50px 150px, 200px 150px, 200px 50px, 0 50px)"></div>
+ </div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-006.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-006.html
new file mode 100644
index 0000000000..1b33eaaf2f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-006.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path and polygon with padding-box</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-square-001-ref.html">
+ <meta name="assert" content="The clip-path property allows specifying
+ basic shapes and reference boxes. This test checks the usage of the correct
+ reference box 'padding-box' for the polygon() function by mixing percentage
+ and absolute values as coordinates. On sucess you should see a green square
+ and no red.">
+</head>
+<style>
+div {
+ width: 50px;
+ height: 50px;
+ background-color: green;
+ padding: 25px;
+ margin: 25px;
+ border: red solid 50px;
+}
+</style>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="clip-path: polygon(0% 0%, 100% 0%, 100px 100%, 0 100px) padding-box"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-007.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-007.html
new file mode 100644
index 0000000000..9b59097942
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-007.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path and polygon with border-box</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-stripes-001-ref.html">
+ <meta name="assert" content="The clip-path property allows specifying
+ basic shapes and reference boxes. This test checks the usage of the correct
+ reference box 'border-box' for the polygon() function by mixing percentage
+ and absolute values as coordinates. On sucess you should see a green
+ vertical stripe next to a lime green vertical stripe. Both should be of equal
+ size.">
+<style>
+div {
+ width: 50px;
+ height: 50px;
+ background-color: green;
+ padding: 25px;
+ margin: 25px;
+ border: red solid 50px;
+ border-left: lime solid 50px;
+}
+</style>
+<body>
+ <p>The test passes if you see a green vertical stripe next to a lime green vertical stripe, both stripes should be of equal size and there should be no red.</p>
+ <div style="clip-path: polygon(0% 25%, 50% 50px, 100px 75%, 0 150px) border-box"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-008.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-008.html
new file mode 100644
index 0000000000..454aba6915
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-008.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path and polygon with margin-box</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-stripes-002-ref.html">
+ <meta name="assert" content="The clip-path property allows specifying
+ basic shapes and reference boxes. This test checks the usage of the correct
+ reference box 'margin-box' for the polygon() function by mixing percentage
+ and absolute values as coordinates. On sucess you should see a green
+ vertical stripe next to a lime green vertical stripe. Both should be of equal
+ size.">
+</head>
+<style>
+div {
+ width: 50px;
+ height: 50px;
+ background-color: green;
+ padding: 25px;
+ margin: 25px;
+ border: red solid 25px;
+ border-left: lime solid 25px;
+}
+</style>
+<body>
+ <p>The test passes if you see a green vertical stripe next to a lime green vertical stripe, both stripes should be of equal size and there should be no red.</p>
+ <div style="clip-path: polygon(12.5% 25%, 37.5% 50px, 75px 50%, 25px 100px) margin-box"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-009.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-009.html
new file mode 100644
index 0000000000..7d3ab5bb42
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-009.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path and polygon with content-box</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-square-002-ref.html">
+ <meta name="assert" content="The clip-path property allows specifying
+ basic shapes and reference boxes. This test checks the usage of the correct
+ reference box 'content-box' for the polygon() function by mixing percentage
+ and absolute values as coordinates. On sucess you should see a green square
+ and no red.">
+</head>
+<style>
+div {
+ width: 50px;
+ height: 50px;
+ background-color: green;
+ padding: 25px;
+ margin: 25px;
+ border: red solid 25px;
+}
+</style>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="clip-path: polygon(0% 0px, 50px 0%, 100% 50px, 0px 100%) content-box"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-010.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-010.html
new file mode 100644
index 0000000000..c60aba2979
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-010.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path and polygon with fill-box</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-stripes-001-ref.html">
+ <meta name="assert" content="The clip-path property allows specifying
+ basic shapes and reference boxes. This test checks the usage of the correct
+ reference box. 'fill-box' was specified but is not supported for HTML
+ elements. The used value should be 'border-box' for the polygon() function
+ instead. By mixing percentage and absolute values as coordinates we check
+ the correct used reference box. On sucess you should see a green
+ vertical stripe next to a lime green vertical stripe. Both should be of equal
+ size.">
+<style>
+div {
+ width: 50px;
+ height: 50px;
+ background-color: green;
+ padding: 25px;
+ margin: 25px;
+ border: red solid 50px;
+ border-left: lime solid 50px;
+}
+</style>
+<body>
+ <p>The test passes if you see a green vertical stripe next to a lime green vertical stripe, both stripes should be of equal size and there should be no red.</p>
+ <div style="clip-path: polygon(0% 25%, 50% 50px, 100px 75%, 0 150px) fill-box"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-011.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-011.html
new file mode 100644
index 0000000000..7acccd1a69
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-011.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path and polygon with stroke-box</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-stripes-001-ref.html">
+ <meta name="assert" content="The clip-path property allows specifying
+ basic shapes and reference boxes. This test checks the usage of the correct
+ reference box. 'stroke-box' was specified but is not supported for HTML
+ elements. The used value should be 'border-box' for the polygon() function
+ instead. By mixing percentage and absolute values as coordinates we check
+ the correct used reference box. On sucess you should see a green
+ vertical stripe next to a lime green vertical stripe. Both should be of equal
+ size.">
+<style>
+div {
+ width: 50px;
+ height: 50px;
+ background-color: green;
+ padding: 25px;
+ margin: 25px;
+ border: red solid 50px;
+ border-left: lime solid 50px;
+}
+</style>
+<body>
+ <p>The test passes if you see a green vertical stripe next to a lime green vertical stripe, both stripes should be of equal size and there should be no red.</p>
+ <div style="clip-path: polygon(0% 25%, 50% 50px, 100px 75%, 0 150px) stroke-box"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-012.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-012.html
new file mode 100644
index 0000000000..9a24abfd10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-012.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path and polygon with view-box</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-stripes-001-ref.html">
+ <meta name="assert" content="The clip-path property allows specifying
+ basic shapes and reference boxes. This test checks the usage of the correct
+ reference box. 'view-box' was specified but is not supported for HTML
+ elements. The used value should be 'border-box' for the polygon() function
+ instead. By mixing percentage and absolute values as coordinates we check
+ the correct used reference box. On sucess you should see a green
+ vertical stripe next to a lime green vertical stripe. Both should be of equal
+ size.">
+<style>
+div {
+ width: 50px;
+ height: 50px;
+ background-color: green;
+ padding: 25px;
+ margin: 25px;
+ border: red solid 50px;
+ border-left: lime solid 50px;
+}
+</style>
+<body>
+ <p>The test passes if you see a green vertical stripe next to a lime green vertical stripe, both stripes should be of equal size and there should be no red.</p>
+ <div style="clip-path: polygon(0% 25%, 50% 50px, 100px 75%, 0 150px) view-box"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-013.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-013.html
new file mode 100644
index 0000000000..8d2c049a7e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-polygon-013.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path and polygon different units</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="match" href="reference/clip-path-stripes-003-ref.html">
+ <meta name="assert" content="Test the support of different units for
+ polygon coordinates. The test passes if you see a multiple green and blue
+ stripe pairs. For each pair, the blue and green stripe must be of same
+ length.">
+<style>
+div {
+ width: 100%;
+ height: 20px;
+ background-color: green;
+ padding: 0;
+ margin: 0;
+}
+div:nth-child(odd) {
+ margin-bottom: 5px;
+ background-color: blue;
+}
+</style>
+<body>
+ <p>The test passes if you see a multiple green and blue stripe pairs. For each pair, the blue and green stripe must be of same length.</p>
+ <div style="clip-path: polygon(0 0, 50% 0, 50% 20px, 0 20px)"></div>
+ <div style="width: 50%"></div>
+
+ <div style="clip-path: polygon(0 0, 20em 0, 20em 20px, 0 20px)"></div>
+ <div style="width: 20em"></div>
+
+ <div style="clip-path: polygon(0 0, 50vw 0, 50vw 20px, 0 20px)"></div>
+ <div style="width: 50vw"></div>
+
+ <div style="clip-path: polygon(0 0, 40vh 0, 40vh 20px, 0 20px)"></div>
+ <div style="width: 40vh"></div>
+
+ <div style="clip-path: polygon(0 0, calc(30% + 15px) 0, calc(30% + 15px) 20px, 0 20px)"></div>
+ <div style="width: calc(30% + 15px)"></div>
+
+ <div style="clip-path: polygon(0 0, 30ex 0, 30ex 20px, 0 20px)"></div>
+ <div style="width: 30ex"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-001.html
new file mode 100644
index 0000000000..35b31ebaef
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-001.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>CSS Masking: clip path reference box with box-shadow</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#propdef-box-shadow">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=418484">
+<link rel="match" href="reference/clip-path-reference-box-001-ref.html">
+<meta name="assert" content="Check that the 'clip-path' property uses the border box as the reference box.">
+
+<style>
+.clipped {
+ width: 100px;
+ height: 200px;
+ background-color: green;
+ clip-path: polygon(0% 0%,100% 0%,100% 50%,0% 50%);
+ box-shadow: 100px 0px red;
+}
+</style>
+<div class="clipped"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-002.html
new file mode 100644
index 0000000000..a45e4537fc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-002.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>CSS Masking: clip path with floated element</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=418484">
+<link rel="match" href="reference/clip-path-reference-box-002-ref.html">
+<meta name="assert" content="Check that the 'clip-path' property uses the border box as the reference box.">
+
+<style>
+.clipped {
+ width: 100px;
+ height: 200px;
+ background-color: green;
+ clip-path: polygon(0% 0%,100% 0%,100% 50%,0% 50%);
+}
+</style>
+<div class="clipped">
+ <div style="float:left; margin-left:-100px; margin-top:-100px;">&nbsp;</div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-003.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-003.html
new file mode 100644
index 0000000000..ac88439d7b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-003.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Masking: clip path reference box with transform</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=418484">
+<link rel="match" href="reference/clip-path-reference-box-003-ref.html">
+<meta name="assert" content="Check that the 'clip-path' property uses the border box as the reference box when using transform.">
+
+<style>
+.clipped {
+ width: 100px;
+ height: 200px;
+ background-color: green;
+ clip-path: polygon(0% 0%,100% 0%,100% 50%,0% 50%);
+}
+.abs {
+ position: absolute;
+ width: 200px;
+ height: 200px;
+}
+</style>
+<div class="abs">
+ <div class="clipped" style="position: absolute; overflow: hidden">
+ <div class="abs" style="transform: translate(0px, 100px); background-color: red;"></div>
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-004.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-004.html
new file mode 100644
index 0000000000..eb89065364
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-box-004.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<title>CSS Masking: clip path reference box with inline boxes</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="help" href="https://drafts.csswg.org/css-box-3/#content-area">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-1/#funcdef-polygon">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=641907">
+<link rel="match" href="reference/clip-path-reference-box-004-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css"/>
+<meta name="assert" content="Check that the 'clip-path' property applied to an inline that spans multiple lines uses the correct reference boxes/reference box for each fragment.">
+
+<style>
+div {
+ width: 100px;
+ height: 100px;
+ overflow: hidden;
+ line-height: 50px;
+ font-size: 50px;
+ font-family: Ahem;
+}
+span {
+ background-color: green;
+ color: green;
+ clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
+}
+</style>
+<div>
+<span>XX XX</span>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-restore.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-restore.html
new file mode 100644
index 0000000000..eccebd8fbc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-reference-restore.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<title>CSS Masking: Consecutive clip-paths don't affect each other.</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="issue" href="https://crbug.com/391291">
+<link rel="match" href="reference/clip-path-reference-restore-ref.html">
+<meta name="assert" content="Check that consecutive clip-paths don't affect each other"/>
+<style>
+.error {
+ width: 100px;
+ height: 100px;
+ background-color: red;
+ position: absolute;
+}
+.test {
+ width: 200px;
+ height: 50px;
+ background-color: green;
+ clip-path: url(#c);
+}
+</style>
+<div class="error"></div>
+<div class="test"></div>
+<div class="test"></div>
+<svg>
+ <defs>
+ <clipPath id="c" clipPathUnits="objectBoundingBox">
+ <rect width="0.5" height="1"/>
+ </clipPath>
+ </defs>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-rotated-will-change-transform-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-rotated-will-change-transform-ref.html
new file mode 100644
index 0000000000..ddbf0e9812
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-rotated-will-change-transform-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<div style="transform: rotate(45deg); width: 200px; height: 200px; will-change: transform">
+ <div style="position: relative; top: 30px; left: 30px; width: 140px; height: 140px; background: green"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-rotated-will-change-transform.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-rotated-will-change-transform.html
new file mode 100644
index 0000000000..a609e9cc91
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-rotated-will-change-transform.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<title>Clip Path: should be correctly rotated by transform with will-change:transform</title>
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+<link rel="match" href="clip-path-rotated-will-change-transform-ref.html">
+<style>div { width: 200px; height: 200px; position: absolute; }</style>
+<div style="transform: rotate(45deg); clip-path: inset(31px)">
+ <div style="will-change: transform; background: red"></div>
+</div>
+<div style="transform: rotate(45deg); will-change: transform">
+ <div style="top: 30px; left: 30px; width: 140px; height: 140px; background: green"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-round-zero-size-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-round-zero-size-ref.html
new file mode 100644
index 0000000000..a5e44e7398
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-round-zero-size-ref.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS Test Reference</title>
+<style>
+#target {
+ margin: 30px;
+ height: 40px;
+ width: 40px;
+ background-color: lime;
+ border-radius: 5px;
+}
+</style>
+<div id="target"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-round-zero-size.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-round-zero-size.html
new file mode 100644
index 0000000000..d42ee6f536
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-round-zero-size.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS clip path with zero box size</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="help" href="https://bugzil.la/1785903">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="match" href="clip-path-round-zero-size-ref.html">
+<style>
+#target {
+ margin: 50px;
+ height: 0px;
+ width: 0px;
+ outline: 50px solid lime;
+ clip-path: inset(-20px round 5px);
+}
+</style>
+<div id="target"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-scaled-video-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-scaled-video-ref.html
new file mode 100644
index 0000000000..43ebcc8dc7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-scaled-video-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<p>Expect no hairlines below.</p>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-scaled-video.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-scaled-video.html
new file mode 100644
index 0000000000..c92702d8e7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-scaled-video.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta name="assert" content="There should be no hairline along the edges of clip-path bounding box">
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#ClipPathElement">
+<link rel="help" href="https://crbug.com/1171601">
+<link rel="match" href="clip-path-scaled-video-ref.html">
+<script src="/common/reftest-wait.js"></script>
+<body style="overflow: hidden">
+<p>Expect no hairlines below.</p>
+<svg width="700" height="550">
+ <!-- Clipping the video-->
+ <clipPath id="clip">
+ <polygon points="100,100 250,250"/>
+ </clipPath>
+ <g clip-path="url(#clip)" transform="scale(0.112)">
+ <foreignObject width="320" height="240">
+ <video src="/media/test.ogv" autoplay loop></video>
+ </foreignObject>
+ </g>
+ <g clip-path="url(#clip)" transform="scale(0.345)">
+ <foreignObject width="320" height="240">
+ <video src="/media/test.ogv" autoplay loop></video>
+ </foreignObject>
+ </g>
+ <g clip-path="url(#clip)" transform="scale(0.778)">
+ <foreignObject width="320" height="240">
+ <video src="/media/test.ogv" autoplay loop></video>
+ </foreignObject>
+ </g>
+ <g clip-path="url(#clip)" transform="scale(0.912)">
+ <foreignObject width="320" height="240">
+ <video src="/media/test.ogv" autoplay loop></video>
+ </foreignObject>
+ </g>
+ <g clip-path="url(#clip)" transform="scale(1.678)">
+ <foreignObject width="320" height="240">
+ <video src="/media/test.ogv" autoplay loop></video>
+ </foreignObject>
+ </g>
+ <g clip-path="url(#clip)" transform="scale(3.333)">
+ <foreignObject width="320" height="240">
+ <video src="/media/test.ogv" oncanplaythrough="takeScreenshot()" autoplay loop></video>
+ </foreignObject>
+ </g>
+</svg>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-scroll.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-scroll.html
new file mode 100644
index 0000000000..880fd8b77a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-scroll.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Masking: Test clip-path property with overflow:scroll</title>
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-path-property">
+<link rel="match" href="reference/clip-path-scroll-ref.html">
+<html class="reftest-wait">
+<p>The test passes if there is a green square containing text (which can be scrolled
+with mouse wheel or touch). No scrollbars should be seen.</p>
+<div id="target" style="clip-path: polygon(10px 10px, 10px 100px, 100px 100px, 100px 10px);
+ width: 200px; height: 200px; overflow: scroll; background: red">
+ <div style="position: relative; top: 100px;
+ width: 100px; height: 100px; background: green">
+ </div>
+ <div style="height: 1000px"></div>
+</div>
+<script>
+requestAnimationFrame(() => {
+ requestAnimationFrame(() => {
+ target.scrollTop = 100;
+ document.documentElement.classList.remove("reftest-wait");
+ });
+});
+</script>
+</html>
+
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-001.html
new file mode 100644
index 0000000000..6033e9743e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-001.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and shape function with nonzero fill</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
+ <link rel="match" href="reference/clip-path-path-001-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'shape()' for clipping. Test nonzero path function. On pass you should
+ see a green square.">
+</head>
+<style>
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: shape(nonzero from 10px 10px,
+ hline by 80px, vline by 80%, hline by -80%, close,
+ move to 25px 25px, hline by 50px, vline by 50px, hline by -50%, close);
+ }
+</style>
+<body>
+ <p>The test passes if there are a green filled rect.</p>
+ <div id="rect"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-002-units.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-002-units.html
new file mode 100644
index 0000000000..b928876a0a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-002-units.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and shape function with evenodd fill</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
+ <link rel="match" href="reference/clip-path-path-002-ref.html">
+ <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'shape()' for clipping. Test evenodd path function. On pass you should
+ see a green hollow square.">
+</head>
+<style>
+ * {
+ font-size: 16px;
+ }
+
+ html {
+ font-size: 10px;
+ --v50: 50px;
+ }
+
+ #rect {
+ width: 100px;
+ height: 100px;
+ font-size: 5px;
+ font-family: Ahem;
+ background-color: green;
+ clip-path: shape(evenodd from 10px 2ch,
+ hline by 80px, vline by 80%, hline by -8rem, close,
+ move to 25% 25px, hline by 10em, vline by var(--v50), hline by -50%);
+ }
+</style>
+<body>
+ <p>The test passes if there are a green hollow rect.</p>
+ <div id="rect"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-002.html
new file mode 100644
index 0000000000..3cb39f8d44
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-002.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and shape function with evenodd fill</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
+ <link rel="match" href="reference/clip-path-path-002-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'shape()' for clipping. Test evenodd path function. On pass you should
+ see a green hollow square.">
+</head>
+<style>
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: shape(evenodd from 10px 10px,
+ hline by 80px, vline by 80%, hline by -80px, close,
+ move to 25% 25px, hline by 50px, vline by 50px, hline by -50%);
+ }
+</style>
+<body>
+ <p>The test passes if there are a green hollow rect.</p>
+ <div id="rect"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-003.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-003.html
new file mode 100644
index 0000000000..22e7d9aaf5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-003.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and shape function with nonzero fill</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
+ <link rel="match" href="reference/clip-path-shape-003-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'shape()' for clipping. Test curves.">
+</head>
+<style>
+ div {
+ width: 100px;
+ height: 100px;
+ }
+ #ref {
+ clip-path: path(nonzero, "M 10 10, Q 40 0 60 20, T 90 0, c 10 40 20 20 -20 60, s -10 70 -40 -10");
+ background-color: red;
+ position: absolute;
+ }
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: shape(nonzero from 10px 10px,
+ curve to 60px 20% via 40px 0,
+ smooth to 90px 0,
+ curve by -20px 60% via 10% 40px 20% 20px,
+ smooth by -40% -10px via -10px 70px);
+ }
+</style>
+<body>
+ <p>You should see no red.</p>
+ <div id="ref"></div>
+ <div id="rect"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-004.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-004.html
new file mode 100644
index 0000000000..14e3ba6329
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-004.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-path property and shape function with nonzero fill</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
+ <link rel="match" href="reference/clip-path-shape-004-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'shape()' for clipping. Test arcs.">
+</head>
+<style>
+ div {
+ width: 100px;
+ height: 100px;
+ }
+ #ref {
+ clip-path: path(nonzero, "M 20 20 A 25 12 0 0 1 80 20, a 33 33 120 1 1 -40 50, A 20 25 0 0 0 20 20");
+ background-color: red;
+ position: absolute;
+ }
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: shape(nonzero from 20px 20px,
+ arc to 80px 20px of 25px 12px cw,
+ arc by -40px 50px of 33px cw large rotate 120deg,
+ arc to 20% 20% of 20px 25px ccw);
+ }
+</style>
+<body>
+ <p>You should see no red.</p>
+ <div id="ref"></div>
+ <div id="rect"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-interpolation-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-interpolation-001.html
new file mode 100644
index 0000000000..1d881e5bd5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-interpolation-001.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<head>
+ <title>CSS Masking: Test clip-path nonzero path interpolation</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
+ <link rel="match" href="reference/clip-path-path-interpolation-001-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'shape()' for clipping. Test the interpolation of nonzero
+ path function.">
+ <style>
+ @keyframes anim {
+ from {
+ clip-path: shape(nonzero from 20px 20px,
+ hline by 60px, vline by 60px, hline by -60%, close,
+ move to 30% 30px, hline by 40px, vline by 40px, hline by -40px, close);
+ }
+ to {
+ clip-path: shape(nonzero from 50px 50px,
+ hline by 50px, vline by 50px, hline by -50%, close,
+ move to 20px 20%, hline by 50px, vline by 50px, hline by -50px, close);
+ }
+ }
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ animation: anim 10s -5s paused linear;
+ }
+ </style>
+</head>
+<body>
+ <div id="rect"></div>
+</body>
+<script>
+ requestAnimationFrame(() => {
+ document.documentElement.classList.remove('reftest-wait');
+ });
+</script>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-interpolation-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-interpolation-002.html
new file mode 100644
index 0000000000..9d8ab65b2d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-shape-interpolation-002.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<head>
+ <title>CSS Masking: Test clip-path evenodd path interpolation</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
+ <link rel="match" href="reference/clip-path-path-interpolation-002-ref.html">
+ <meta name="assert" content="The clip-path property takes the basic shape
+ 'shape()' for clipping. Test the interpolation of evenodd
+ path function.">
+ <style>
+ @keyframes anim {
+ from {
+ clip-path: shape(evenodd from 20px 20px,
+ hline by 60px, vline by 60px, hline by -60%, close,
+ move to 30% 30px, hline by 40px, vline by 40px, hline by -40px, close);
+ }
+ to {
+ clip-path: shape(evenodd from 50px 50px,
+ hline by 50px, vline by 50px, hline by -50%, close,
+ move to 20px 20%, hline by 50px, vline by 50px, hline by -50px, close);
+ }
+ }
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ animation: anim 10s -5s paused linear;
+ }
+ </style>
+</head>
+<body>
+ <div id="rect"></div>
+</body>
+<script>
+ requestAnimationFrame(() => {
+ document.documentElement.classList.remove('reftest-wait');
+ });
+</script>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-strokeBox-1a.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-strokeBox-1a.html
new file mode 100644
index 0000000000..a479a47112
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-strokeBox-1a.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path stroke-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path stroke-box works correctly or not. This test is for clip-path applied to an SVG SVG element.">
+ <style>
+ svg {
+ position: absolute;
+ left: 40px;
+ top: 40px;
+ background-color: blue;
+ width: 30px;
+ height: 30px;
+ margin: 10px;
+ padding: 10px;
+ border: solid blue 25px;
+ clip-path: circle(farthest-side) stroke-box;
+ }
+ </style>
+ </head>
+ <body>
+ <svg width="200" height="200">
+ <rect x="0" y="0" width="200" height="200" fill="blue"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-strokeBox-1b.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-strokeBox-1b.html
new file mode 100644
index 0000000000..ba81b5df73
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-strokeBox-1b.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path stroke-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path stroke-box works correctly or not.">
+ </head>
+ <body>
+ <svg width="200" height="200" style="position: absolute; left: 0px; top: 0px;">
+ <rect x="60" y="60" width="80" height="80" fill="blue" stroke="blue" stroke-width="20" clip-path="circle(50%) stroke-box"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-invalidate-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-invalidate-ref.html
new file mode 100644
index 0000000000..20c8085b94
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-invalidate-ref.html
@@ -0,0 +1,28 @@
+<!doctype html>
+<html>
+<title>Clip Path: invalidate composited clip-path via SVG</title>
+<link rel="author" title="Chris Harrelson" href="mailto:chrishtr@chromium.org">
+
+<style>
+ body {
+ margin: 0;
+ }
+ div {
+ height: 500px;
+ background: black;
+ clip-path: url(#clip);
+ will-change: transform;
+ }
+ svg {
+ width: 0;
+ height: 0;
+ }
+</style>
+
+<div></div>
+
+<svg viewBox="0 0 1 1">
+ <clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <polygon points="0,0 0.5,1 1,0" />
+ </clipPath>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-invalidate.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-invalidate.html
new file mode 100644
index 0000000000..0bf921c7cf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-invalidate.html
@@ -0,0 +1,41 @@
+<!doctype html>
+<html class="reftest-wait">
+<title>Clip Path: invalidate composited clip-path via SVG</title>
+<link rel="author" title="Chris Harrelson" href="mailto:chrishtr@chromium.org">
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+<link rel="match" href="clip-path-svg-invalidate-ref.html">
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+ body {
+ margin: 0;
+ }
+ div {
+ height: 500px;
+ background: black;
+ clip-path: url(#clip);
+ will-change: transform;
+ }
+ svg {
+ width: 0;
+ height: 0;
+ }
+</style>
+
+<div></div>
+
+<svg viewBox="0 0 1 1">
+ <clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <polygon points="0,0 0.5,0.5 1,0" />
+ </clipPath>
+</svg>
+
+<script>
+ const polygon = document.querySelector("polygon");
+ const points = "0,0 0.5,1 1,0";
+ requestAnimationFrame(() => requestAnimationFrame(() => {
+ polygon.setAttribute("points", points);
+ takeScreenshot();
+ }));
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-text-backdrop-filter-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-text-backdrop-filter-ref.html
new file mode 100644
index 0000000000..194c473482
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-text-backdrop-filter-ref.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<meta name="flags" content="ahem">
+<link rel="stylesheet" href="/fonts/ahem.css" />
+<style>
+#svgText {
+ font: 100px/1 Ahem;
+}
+</style>
+<svg width="500" height="300">
+ <text id="svgText" x="10" y="100">Text</text>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-text-backdrop-filter.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-text-backdrop-filter.html
new file mode 100644
index 0000000000..68d462ab80
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-text-backdrop-filter.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty">
+<link rel="match" href="clip-path-svg-text-backdrop-filter-ref.html">
+<meta name="fuzzy" content="0-1;0-200">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" href="/fonts/ahem.css" />
+<style>
+.masked {
+ width: 500px;
+ height: 300px;
+ clip-path: url(#svgPath);
+ backdrop-filter: invert(100%);
+ background: transparent;
+}
+#svgText {
+ font: 100px/1 Ahem;
+}
+</style>
+<div class="masked"></div>
+<svg>
+ <clipPath id="svgPath">
+ <text id="svgText" x="10" y="100">Text</text>
+ </clipPath>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-text-font-loading.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-text-font-loading.html
new file mode 100644
index 0000000000..230c36ce6e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-svg-text-font-loading.html
@@ -0,0 +1,30 @@
+<!doctype html>
+<html class="reftest-wait">
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+<link rel="help" href="https://drafts.csswg.org/css-font-loading/#font-face-load">
+<link rel="help" href="https://crbug.com/1222734">
+<link rel="match" href="reference/green-100x100.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+<style>
+ #target {
+ width: 100px;
+ height: 100px;
+ border-right: 100px solid red;
+ clip-path: url(#clip);
+ background: green;
+ }
+</style>
+<div id="target"></div>
+<svg height="0">
+ <clipPath id="clip">
+ <text y="80" font-size="100" font-family="DelayedAhem, serif">X</text>
+ </clipPath>
+</svg>
+<script>
+ waitForAtLeastOneFrame().then(() => {
+ let font = new FontFace('DelayedAhem', 'url("/fonts/Ahem.ttf")');
+ document.fonts.add(font);
+ font.load().then(takeScreenshot);
+ });
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-transform-mutated-001.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-transform-mutated-001.html
new file mode 100644
index 0000000000..01f11a34a3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-transform-mutated-001.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>CSS Masking: Test clip-path after updating its transform</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=881700">
+<link rel="match" href="reference/clip-path-transform-mutated-001-ref.html">
+<meta name="assert" content="This test ensures that updating clipPath transform works properly.">
+<script>
+setup({ explicit_done: true });
+</script>
+<style>
+#target {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: url(#clip);
+}
+</style>
+<div id="target"></div>
+<svg>
+ <clipPath id="clip">
+ <rect width="1" height="1"/>
+ </clipPath>
+</svg>
+<script>
+clip.style.transform = 'scale(100, 100)';
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-transform-mutated-002.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-transform-mutated-002.html
new file mode 100644
index 0000000000..de00a013ad
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-transform-mutated-002.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>CSS Masking: Mutating a &lt;clipPath&gt;s 'transform' updates the clip path</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path"">
+<link rel="help" href="https://crbug.com/881700">
+<link rel="match" href="reference/clip-path-transform-mutated-002-ref.html">
+<meta name="assert" content="Check that clipPath's clients should be notified when the 'transform' presentation attribute (or CSS property) was mutated on a <clipPath>."/>
+
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+
+<style>
+#target {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: url(#clip);
+}
+</style>
+<div id="target"></div>
+<svg>
+ <clipPath id="clip">
+ <rect width="1" height="1"/>
+ </clipPath>
+</svg>
+<script>
+ waitForAtLeastOneFrame().then(function() {
+ clip.setAttribute('transform', 'scale(100 100)');
+ takeScreenshot();
+ });
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-url-reference-change-from-empty.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-url-reference-change-from-empty.html
new file mode 100644
index 0000000000..2de0bb866f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-url-reference-change-from-empty.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>Switch from an empty to a non-empty clip-path url()</title>
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+<link rel="match" href="reference/green-100x100.html">
+<script src="/common/reftest-wait.js"></script>
+<svg>
+ <clipPath id="empty"/>
+ <clipPath id="rect">
+ <rect width="100" height="100"/>
+ </clipPath>
+ <rect width="100" height="100" fill="red"/>
+ <rect width="100" height="100" fill="green" id="target" clip-path="url(#empty)"/>
+</svg>
+<script>
+ requestAnimationFrame(() => {
+ requestAnimationFrame(() => {
+ document.getElementById('target').setAttribute('clip-path', 'url(#rect)');
+ takeScreenshot();
+ });
+ });
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-url-reference-change.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-url-reference-change.html
new file mode 100644
index 0000000000..4a6266aabd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-url-reference-change.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>Switch from one clip-path url() to another with the same bounds</title>
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-clip-path">
+<link rel="match" href="reference/green-100x100.html">
+<script src="/common/reftest-wait.js"></script>
+<svg>
+ <clipPath id="circle">
+ <circle cx="50" cy="50" r="50"/>
+ </clipPath>
+ <clipPath id="rect">
+ <rect width="100" height="100"/>
+ </clipPath>
+ <rect width="100" height="100" fill="red"/>
+ <rect width="100" height="100" fill="green" id="target" clip-path="url(#circle)"/>
+</svg>
+<script>
+ requestAnimationFrame(() => {
+ requestAnimationFrame(() => {
+ document.getElementById('target').setAttribute('clip-path', 'url(#rect)');
+ takeScreenshot();
+ });
+ });
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-viewBox-1a.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-viewBox-1a.html
new file mode 100644
index 0000000000..5b029e1ef7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-viewBox-1a.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path view-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path view-box works correctly or not.">
+ <meta name="fuzzy" content="maxDifference=0-62; totalPixels=0-420">
+ </head>
+ <body>
+ <svg width="200" height="200" style="position: absolute; left: 10px; top: 10px;">
+ <rect x="20" y="20" width="135" height="135" fill="blue"
+ clip-path="circle(25% at calc(50% - 10px) calc(50% - 10px)) view-box"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-viewBox-1b.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-viewBox-1b.html
new file mode 100644
index 0000000000..08c91b84bf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-viewBox-1b.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path view-box with viewbox</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path view-box with viewbox works correctly or not.">
+ </head>
+ <body>
+ <svg width="200" height="200" viewBox="50 50 100 100" preserveAspectRatio="none" style="position: absolute; left: 10px; top: 10px;">
+ <rect x="0" y="0" width="200" height="200" fill="blue"
+ clip-path="circle(25% at calc(50% - 5px) calc(50% - 5px)) view-box"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/clip-path-viewBox-1c.html b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-viewBox-1c.html
new file mode 100644
index 0000000000..0890ee1487
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/clip-path-viewBox-1c.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path: clip path view-box</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
+ <link rel="match" href="clip-path-geometryBox-1-ref.html">
+ <meta name="assert" content="Test checks whether clip-path view-box works correctly or not. This test is for clip-path applied to an SVG SVG element.">
+ <style>
+ svg {
+ position: absolute;
+ left: 40px;
+ top: 40px;
+ background-color: blue;
+ width: 30px;
+ height: 30px;
+ margin: 10px;
+ padding: 10px;
+ border: solid blue 25px;
+ clip-path: circle(farthest-side) view-box;
+ }
+ </style>
+ </head>
+ <body>
+ <svg width="200" height="200">
+ <rect x="0" y="0" width="200" height="200" fill="blue"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/interpolation.html b/testing/web-platform/tests/css/css-masking/clip-path/interpolation.html
new file mode 100644
index 0000000000..da3981feed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/interpolation.html
@@ -0,0 +1,60 @@
+<!doctype html>
+<meta charset=utf-8>
+<meta name="assert"
+ content="This test checks if the inerpolation on clip-path is correct" />
+<title>Tests for the output of the interpolation of clip-path</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<div id='log'></div>
+<script type='text/javascript'>
+'use strict';
+
+function createDiv(test) {
+ var element = document.createElement('div');
+ document.body.appendChild(element);
+ test.add_cleanup(function() {
+ element.remove();
+ });
+ return element;
+}
+
+test(function(t) {
+ var div = createDiv(t);
+ div.style.clipPath = 'circle(25px)';
+ // The radius becomes negative between 60%~61%, so we set the delay to -61s.
+ div.style.transition = 'all 100s cubic-bezier(0, 0, 1, -60) -61s';
+ getComputedStyle(div).clipPath;
+
+ div.style.clipPath = 'circle(26px)';
+ assert_equals(getComputedStyle(div).clipPath, 'circle(0px at 50% 50%)',
+ 'The radius of circle is clamped to zero at 61%');
+}, 'Test circle with negative easing on clip-path');
+
+test(function(t) {
+ var div = createDiv(t);
+ div.style.clipPath = 'ellipse(25px 25px)';
+ // The radius becomes negative between 60%~61%, so we set the delay to -61s.
+ div.style.transition = 'all 100s cubic-bezier(0, 0, 1, -60) -61s';
+ getComputedStyle(div).clipPath;
+
+ div.style.clipPath = 'ellipse(26px 26px)';
+ assert_equals(getComputedStyle(div).clipPath, 'ellipse(0px 0px at 50% 50%)',
+ 'The radius of ellipse is clamped to zero at 61%');
+}, 'Test ellipse with negative easing on clip-path');
+
+test(function(t) {
+ var div = createDiv(t);
+ div.style.clipPath = 'inset(10% round 25px)';
+ // The radius becomes negative between 60%~61%, so we set the delay to -61s.
+ div.style.transition = 'all 100s cubic-bezier(0, 0, 1, -60) -61s';
+ getComputedStyle(div).clipPath;
+
+ div.style.clipPath = 'inset(10% round 26px)';
+ assert_equals(getComputedStyle(div).clipPath, 'inset(10%)',
+ 'The radius of inset is clamped to zero at 61%');
+}, 'Test inset with negative easing on clip-path');
+
+</script>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference-local-url-with-base-001.html b/testing/web-platform/tests/css/css-masking/clip-path/reference-local-url-with-base-001.html
new file mode 100644
index 0000000000..c65761bddf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference-local-url-with-base-001.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Masking: clip path with local URL using a base element</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="help" href="https://drafts.csswg.org/css-values/#local-urls">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=470608">
+<link rel="match" href="reference/reference-local-url-with-base-001-ref.html">
+<meta name="assert" content="Check that fragment-only URLs are always document-local references.">
+
+<base href="http://www.example.com/">
+<style>
+#target {
+ width: 100px;
+ height: 100px;
+ border-right: 100px solid red;
+ background-color: green;
+ clip-path: url(#clip);
+}
+</style>
+<div id="target"></div>
+<svg>
+ <clipPath id="clip">
+ <rect width="100" height="100"/>
+ </clipPath>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference-mutated.html b/testing/web-platform/tests/css/css-masking/clip-path/reference-mutated.html
new file mode 100644
index 0000000000..09642853c7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference-mutated.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>CSS Masking: SVG clipPath dynamically updated.</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="match" href="reference/reference-mutated-ref.html">
+<meta name="assert" content="Test ensures that SVG clipPath updates properly when dynamically changed."/>
+
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+
+<style>
+#target {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: url(#clip);
+}
+</style>
+<div id="target"></div>
+<svg height="0" width="0">
+ <defs>
+ <clipPath id="clip" clipPathUnits="objectBoundingBox">
+ <circle cx="0.5" cy="0.5" r="0.25"></circle>
+ </clipPath>
+ </defs>
+</svg>
+<script>
+waitForAtLeastOneFrame().then(function() {
+ document.querySelector('circle').setAttribute('r', 1);
+ takeScreenshot();
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference-nonexisting-existing-local.html b/testing/web-platform/tests/css/css-masking/clip-path/reference-nonexisting-existing-local.html
new file mode 100644
index 0000000000..d02e1439e6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference-nonexisting-existing-local.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Masking: fragment of non valid URL as clip.</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<link rel="match" href="reference/reference-nonexisting-existing-local-ref.html">
+<meta name="assert" content="Test ensures that only local URLs with a valid fragment result in a valid clip."/>
+<style>
+#target {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: url(notexisting.svg#c);
+}
+</style>
+<div style="background-color: red; width: 100px">
+ <div id="target"></div>
+</div>
+<svg>
+ <clipPath id="c" clipPathUnits="objectBoundingBox">
+ <circle cx="0.5" cy="0.5" r="0.5"/>
+ </clipPath>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-circle-2-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-circle-2-ref.html
new file mode 100644
index 0000000000..7794d32b3f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-circle-2-ref.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <style type="text/css">
+ body, div {
+ padding: 0;
+ margin: 0;
+ }
+ </style>
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; border-radius: 100px; background-color: green; position: absolute; left: 100px;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-circle-3-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-circle-3-ref.html
new file mode 100644
index 0000000000..4cffe8837d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-circle-3-ref.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <style type="text/css">
+ body, div {
+ padding: 0;
+ margin: 0;
+ }
+ </style>
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; border-radius: 100px; background-color: green; position: relative; top: 100px;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-circle-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-circle-ref.html
new file mode 100644
index 0000000000..c427e696bf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-circle-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a full green circle.</p>
+ <div style="width: 200px; height: 200px; border-radius: 100px; background-color: green;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-columns-shape-001-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-columns-shape-001-ref.html
new file mode 100644
index 0000000000..4337cdf637
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-columns-shape-001-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<body style="margin: 0">
+ <div style="width: 90px; height: 90px; margin-left: 105px; margin-top: 5px; background-color: green"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-columns-shape-002-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-columns-shape-002-ref.html
new file mode 100644
index 0000000000..4337cdf637
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-columns-shape-002-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<body style="margin: 0">
+ <div style="width: 90px; height: 90px; margin-left: 105px; margin-top: 5px; background-color: green"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-descendant-text-mutated-001-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-descendant-text-mutated-001-ref.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-descendant-text-mutated-001-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-document-element-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-document-element-ref.html
new file mode 100644
index 0000000000..4608e54b20
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-document-element-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<style>
+div {
+ position: absolute;
+ width: 50px;
+ height: 50px;
+ background: green;
+}
+</style>
+<div style="top: 50px; left: 50px"></div>
+<div style="top: 100px; left: 50px"></div>
+<div style="top: 100px; left: 100px"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-ellipse-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-ellipse-ref.html
new file mode 100644
index 0000000000..5adc91a5c0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-ellipse-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a full green ellipse.</p>
+ <div style="margin-top: 50px; margin-left: 50px; position: absolute; width: 150px; height: 100px; border-top-right-radius: 75px 50px; border-bottom-right-radius: 75px 50px; border-top-left-radius: 75px 50px; border-bottom-left-radius: 75px 50px; background-color: green;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-filter-radius-clips-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-filter-radius-clips-ref.html
new file mode 100644
index 0000000000..72bdf2202d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-filter-radius-clips-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<div style="padding: 10px">
+ <div id="blur" style="will-change: filter; width: 100px; height: 100px; background: lime"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-001-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-001-ref.html
new file mode 100644
index 0000000000..afc1d18f20
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-001-ref.html
@@ -0,0 +1,29 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Reference for clip-path's path function with nonzero</title>
+ <style type="text/css">
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: url("#clip");
+ }
+ </style>
+</head>
+<body>
+ <p>The test passes if there are a green filled rect.</p>
+ <div id="rect"></div>
+ <svg height="0" width="0">
+ <defs>
+ <clipPath id="clip">
+ <path clip-rule="nonzero" d="M10,10h80v80h-80zM25,25h50v50h-50z"/>
+ </clipPath>
+ </defs>
+ </svg>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-002-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-002-ref.html
new file mode 100644
index 0000000000..d9ea5183fb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-002-ref.html
@@ -0,0 +1,29 @@
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Reference for clip-path's path function with evenodd</title>
+ <style type="text/css">
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: url("#clip");
+ }
+ </style>
+</head>
+<body>
+ <p>The test passes if there are a green hollow rect.</p>
+ <div id="rect"></div>
+ <svg height="0" width="0">
+ <defs>
+ <clipPath id="clip">
+ <path clip-rule="evenodd" d="M10,10h80v80h-80zM25,25h50v50h-50z"/>
+ </clipPath>
+ </defs>
+ </svg>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-interpolation-001-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-interpolation-001-ref.html
new file mode 100644
index 0000000000..4e26ac61f6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-interpolation-001-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Reference for clip-path's path nonzero interpolation</title>
+ <style type="text/css">
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: url("#clip");
+ }
+ </style>
+</head>
+<body>
+ <div id="rect"></div>
+ <svg height="0" width="0">
+ <defs>
+ <clipPath id="clip">
+ <path clip-rule="nonzero" d="M35,35 H90 V90 H35Z M25,25 H70 V70 H25Z"/>
+ </clipPath>
+ </defs>
+ </svg>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-interpolation-002-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-interpolation-002-ref.html
new file mode 100644
index 0000000000..567764a301
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-interpolation-002-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Reference for clip-path's path evenodd interpolation</title>
+ <style type="text/css">
+ #rect {
+ width: 100px;
+ height: 100px;
+ background-color: green;
+ clip-path: url("#clip");
+ }
+ </style>
+</head>
+<body>
+ <div id="rect"></div>
+ <svg height="0" width="0">
+ <defs>
+ <clipPath id="clip">
+ <path clip-rule="evenodd" d="M35,35 H90 V90 H35Z M25,25 H70 V70 H25Z"/>
+ </clipPath>
+ </defs>
+ </svg>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-interpolation-with-zoom-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-interpolation-with-zoom-ref.html
new file mode 100644
index 0000000000..7e0d2a5426
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-interpolation-with-zoom-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>CSS Masking: Test clip-path nonzero path interpolation with zoom</title>
+<style type="text/css">
+ #rect {
+ width: 300px;
+ height: 300px;
+ background-color: green;
+ clip-path: path('M105,105 H270 V270 H105Z M75,75 H210 V210 H75Z');
+ }
+
+</style>
+<div id="rect"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-with-zoom-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-with-zoom-ref.html
new file mode 100644
index 0000000000..ef91c619c4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-path-with-zoom-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+ <title>CSS Masking: Test clip-path property when the page is zoomed</title>
+ <style>
+ #rect {
+ width: 200px;
+ height: 200px;
+ background: green;
+ clip-path: path(nonzero, 'M0 0, L200 0, L0 200');
+ }
+ </style>
+ <div id="rect"></div>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-rectangle-border-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-rectangle-border-ref.html
new file mode 100644
index 0000000000..9a61c76902
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-rectangle-border-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a green box with a blue border.</p>
+ <div style="width: 150px; height: 100px; border: solid blue 50px; background-color: green;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-rectangle-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-rectangle-ref.html
new file mode 100644
index 0000000000..1d3810a778
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-rectangle-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a green box.</p>
+ <div style="margin-top: 50px; margin-left: 50px; position: absolute; width: 150px; height: 100px; background-color: green;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-ref-bottom-green-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-ref-bottom-green-ref.html
new file mode 100644
index 0000000000..ad6abc4f91
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-ref-bottom-green-ref.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <style>
+ html, body {
+ width: 100%;
+ height: 100%;
+ margin: 0;
+ }
+ </style>
+</head>
+<body>
+ <div style="width: 100%; height: 50%; margin-top: 50%; background-color: green; position: absolute;"></div>
+ <p style="position: absolute;">The test passes if the top half of the site is white and the bottom half of the site is green.</p>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-ref-right-green-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-ref-right-green-ref.html
new file mode 100644
index 0000000000..a19be598ca
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-ref-right-green-ref.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <style>
+ html, body {
+ width: 100%;
+ height: 100%;
+ margin: 0;
+ }
+ </style>
+</head>
+<body>
+ <div style="width: 50%; height: 100%; margin-left: 50%; background-color: green; position: absolute;"></div>
+ <p style="position: absolute;">The test passes if the left half of the site is white and the right half of the site is green.</p>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-001-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-001-ref.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-001-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-002-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-002-ref.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-002-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-003-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-003-ref.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-003-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-004-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-004-ref.html
new file mode 100644
index 0000000000..3464a4712a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-box-004-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 50px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-restore-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-restore-ref.html
new file mode 100644
index 0000000000..683511fd80
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-reference-restore-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green;"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-scroll-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-scroll-ref.html
new file mode 100644
index 0000000000..a647e8a0c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-scroll-ref.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<p>The test passes if there is a green square containing text (which can be scrolled
+with mouse wheel or touch). No scrollbars should be seen.</p>
+<div style="position: relative; top: 10px; left: 10px; width: 90px; height: 90px; background: green">
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-shape-003-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-shape-003-ref.html
new file mode 100644
index 0000000000..46e098c4eb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-shape-003-ref.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>Reference of CSS Masking: Test clip-path property and shape function with nonzero fill</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
+</head>
+<style>
+ div {
+ width: 100px;
+ height: 100px;
+ }
+ #ref {
+ background-color: green;
+ clip-path: path(nonzero, "M 10 10, Q 40 0 60 20, T 90 0, c 10 40 20 20 -20 60, s -10 70 -40 -10");
+ position: absolute;
+ }
+</style>
+<body>
+ <p>You should see no red.</p>
+ <div id="ref"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-shape-004-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-shape-004-ref.html
new file mode 100644
index 0000000000..ec8f941079
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-shape-004-ref.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>Reference of CSS Masking: Test clip-path property and shape function with nonzero fill</title>
+ <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
+</head>
+<style>
+ div {
+ width: 100px;
+ height: 100px;
+ }
+ #ref {
+ background-color: green;
+ clip-path: path(nonzero, "M 20 20 A 25 12 0 0 1 80 20, a 33 33 120 1 1 -40 50, A 20 25 0 0 0 20 20");
+ position: absolute;
+ }
+</style>
+<body>
+ <p>You should see no red.</p>
+ <div id="ref"></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-square-001-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-square-001-ref.html
new file mode 100644
index 0000000000..6bc5a16754
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-square-001-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Reftest reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="width: 100px; height: 100px; background-color: green; margin: 75px;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-square-002-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-square-002-ref.html
new file mode 100644
index 0000000000..5230b0f2ff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-square-002-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Reftest reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="width: 50px; height: 50px; background-color: green; margin: 75px;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-stripes-001-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-stripes-001-ref.html
new file mode 100644
index 0000000000..75d08dc59e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-stripes-001-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Reftest reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if you see a green vertical stripe next to a lime green vertical stripe, both stripes should be of equal size and there should be no red.</p>
+ <div style="width: 100px; height: 100px; margin: 75px 0 0 25px; background-color: green;">
+ <div style="width: 50px; height: 100px; background-color: lime;"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-stripes-002-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-stripes-002-ref.html
new file mode 100644
index 0000000000..8dd1c926cb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-stripes-002-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Reftest reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if you see a green vertical stripe next to a lime green vertical stripe, both stripes should be of equal size and there should be no red.</p>
+ <div style="width: 50px; height: 50px; margin: 50px 0 0 25px; background-color: green;">
+ <div style="width: 25px; height: 50px; background-color: lime;"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-stripes-003-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-stripes-003-ref.html
new file mode 100644
index 0000000000..e31282c02f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-stripes-003-ref.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Reftest reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+<style>
+div {
+ height: 20px;
+ background-color: green;
+ padding: 0;
+ margin: 0;
+}
+div:nth-child(odd) {
+ margin-bottom: 5px;
+ background-color: blue;
+}
+</style>
+<body>
+ <p>The test passes if you see a multiple green and blue stripe pairs. For each pair, the blue and green stripe must be of same length.</p>
+ <div style="width: 50%"></div>
+ <div style="width: 50%"></div>
+
+ <div style="width: 20em"></div>
+ <div style="width: 20em"></div>
+
+ <div style="width: 50vw"></div>
+ <div style="width: 50vw"></div>
+
+ <div style="width: 40vh"></div>
+ <div style="width: 40vh"></div>
+
+ <div style="width: calc(30% + 15px)"></div>
+ <div style="width: calc(30% + 15px)"></div>
+
+ <div style="width: 30ex"></div>
+ <div style="width: 30ex"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-transform-mutated-001-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-transform-mutated-001-ref.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-transform-mutated-001-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-transform-mutated-002-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-transform-mutated-002-ref.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/clip-path-transform-mutated-002-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/green-100x100.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/green-100x100.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/green-100x100.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/reference-local-url-with-base-001-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/reference-local-url-with-base-001-ref.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/reference-local-url-with-base-001-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/reference-mutated-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/reference-mutated-ref.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/reference-mutated-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/reference/reference-nonexisting-existing-local-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/reference/reference-nonexisting-existing-local-ref.html
new file mode 100644
index 0000000000..f718ea6abf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/reference/reference-nonexisting-existing-local-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-circle-offset-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-circle-offset-ref.html
new file mode 100644
index 0000000000..5ba54fa8a7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-circle-offset-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<svg>
+ <circle cx="80" cy="80" r="50" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-circle-offset.html b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-circle-offset.html
new file mode 100644
index 0000000000..ec4cbaeb25
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-circle-offset.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<title>CSS Test: circle clip-path on svg graphics element with offset</title>
+<link rel="help" href="https://crbug.com/1286412">
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path">
+<link rel="match" href="svg-clip-path-circle-offset-ref.html">
+<!-- Allow antialised pixel differences along the edge of the circle -->
+<meta name="fuzzy" content="maxDifference=0-62; totalPixels=0-420">
+<svg>
+ <rect x="30" y="30" width="100" height="100" fill="green" style="clip-path: circle(50%)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-ellipse-offset-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-ellipse-offset-ref.html
new file mode 100644
index 0000000000..75b867ff19
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-ellipse-offset-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<svg>
+ <ellipse cx="80" cy="80" rx="40" ry="50" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-ellipse-offset.html b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-ellipse-offset.html
new file mode 100644
index 0000000000..2b0876eb58
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-ellipse-offset.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<title>CSS Test: ellipse clip-path on svg graphics element with offset</title>
+<link rel="help" href="https://crbug.com/1286412">
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path">
+<link rel="match" href="svg-clip-path-ellipse-offset-ref.html">
+<!-- Allow antialised pixel differences along the edge of the ellipse -->
+<meta name="fuzzy" content="maxDifference=0-69; totalPixels=0-394">
+<svg>
+ <rect x="30" y="30" width="100" height="100" fill="green" style="clip-path: ellipse(40% 50%)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-fixed-values-ref.html b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-fixed-values-ref.html
new file mode 100644
index 0000000000..537b77d30a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-fixed-values-ref.html
@@ -0,0 +1,49 @@
+<!doctype html>
+<style>
+svg {
+ width: 300px;
+ height: 300px;
+}
+.container {
+ width: 300px;
+ height: 300px;
+ position: relative;
+}
+.bg1 {
+ background: green;
+ position: absolute;
+ width: 100px;
+ height: 100px;
+}
+.noclip {
+ top: 100px;
+ left: 100px;
+}
+.cp1 {
+ clip-path: polygon(0px 0px, 100px 0px, 0px 100px);
+ top: 0;
+ left: 0;
+}
+.cp2 {
+ clip-path: circle(50px);
+ top: 200px;
+ left: 0;
+}
+.cp3 {
+ clip-path: ellipse(50px 30px);
+ top: 200px;
+ left: 200px;
+}
+.cp4 {
+ clip-path: inset(10px 20px 30px 40px);
+ top: 0;
+ left: 200px;
+}
+</style>
+<div class=container>
+ <div class="bg1 noclip"></div>
+ <div class="bg1 cp1"></div>
+ <div class="bg1 cp2"></div>
+ <div class="bg1 cp3"></div>
+ <div class="bg1 cp4"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-fixed-values.html b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-fixed-values.html
new file mode 100644
index 0000000000..801cfe08d9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/svg-clip-path-fixed-values.html
@@ -0,0 +1,23 @@
+<!doctype html>
+<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-shapes/#supported-basic-shapes">
+<link rel="match" href="svg-clip-path-fixed-values-ref.html">
+<meta name="assert" content="clip-path clips correctly">
+<style>
+svg {
+ width: 300px;
+ height: 300px;
+}
+.bg1 { fill: green; }
+.cp1 { clip-path: polygon(0px 0px, 100px 0px, 0px 100px); }
+.cp2 { clip-path: circle(50px); }
+.cp3 { clip-path: ellipse(50px 30px); }
+.cp4 { clip-path: inset(10px 20px 30px 40px); }
+</style>
+<svg>
+ <rect class="bg1" x="100" y="100" width="100" height="100"/>
+ <rect class="bg1 cp1" x="0" y="0" width="100" height="100"/>
+ <rect class="bg1 cp2" x="0" y="200" width="100" height="100" />
+ <rect class="bg1 cp3" x="200" y="200" width="100" height="100" />
+ <rect class="bg1 cp4" x="200" y="0" width="100" height="100" />
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/clip-path/svg-clipPath.svg b/testing/web-platform/tests/css/css-masking/clip-path/svg-clipPath.svg
new file mode 100644
index 0000000000..d31a1df42e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-path/svg-clipPath.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<defs>
+ <clipPath id="clip-path-ref-userSpaceOnUse-001">
+ <rect x="50" y="50" width="150px" height="100" />
+ </clipPath>
+</defs>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-rule/clip-rule-001.html b/testing/web-platform/tests/css/css-masking/clip-rule/clip-rule-001.html
new file mode 100644
index 0000000000..a5a0961d10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-rule/clip-rule-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-rule property on polygon clip rule evenodd</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement">
+ <link rel="match" href="reference/clip-rule-rectangle-border-ref.html">
+ <meta name="assert" content="The clipPath element takes the basic shape 'polygon' for clipping.
+ The point list for the polygon creates a 'whole' with the dimension of the background. With
+ the clip rule 'evenodd', this whole is clipped out. The clipping makes the green background
+ of the parent div box visible.
+ On pass you should see a green box with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green box with a blue border.</p>
+ <div style="background-color: green; width: 250px;">
+ <div style="width: 150px; height: 100px; border: solid blue 50px; background-color: red; clip-path: url(#clip);"></div>
+ </div>
+
+ <svg>
+ <clipPath id="clip">
+ <polygon points="0 0, 250 0, 250 200, 0 200, 0 50, 200 50, 200 150, 50 150, 50 50, 0 50" clip-rule="evenodd" />
+ </clipPath>
+ </svg>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-rule/clip-rule-002.html b/testing/web-platform/tests/css/css-masking/clip-rule/clip-rule-002.html
new file mode 100644
index 0000000000..5fee625594
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-rule/clip-rule-002.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip-rule property on polygon clip rule nonzero</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#propdef-clip-path">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#ClipPathElement">
+ <link rel="match" href="reference/clip-rule-rectangle-border-ref.html">
+ <meta name="assert" content="The clipPath element takes the basic shape 'polygon' for clipping.
+ The point list for the polygon creates a 'whole' with the dimension of the background. With
+ the clip rule 'nonzero', this whole is clipped out. The clipping makes the green background
+ of the parent div box visible.
+ On pass you should see a green box with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green box with a blue border.</p>
+ <div style="background-color: green; width: 250px;">
+ <div style="width: 150px; height: 100px; border: solid blue 50px; background-color: red; clip-path: url(#clip);"></div>
+ </div>
+
+ <svg>
+ <clipPath id="clip">
+ <polygon points="0 0, 250 0, 250 200, 0 200, 0 50, 50 50, 50 150, 200 150, 200 50, 0 50" clip-rule="nonzero" />
+ </clipPath>
+ </svg>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip-rule/reference/clip-rule-rectangle-border-ref.html b/testing/web-platform/tests/css/css-masking/clip-rule/reference/clip-rule-rectangle-border-ref.html
new file mode 100644
index 0000000000..9a61c76902
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip-rule/reference/clip-rule-rectangle-border-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a green box with a blue border.</p>
+ <div style="width: 150px; height: 100px; border: solid blue 50px; background-color: green;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-absolute-positioned-001.html b/testing/web-platform/tests/css/css-masking/clip/clip-absolute-positioned-001.html
new file mode 100644
index 0000000000..c5b0d9001c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-absolute-positioned-001.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property and rect function on div with position: absolute</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-absolute-positioned-ref.html">
+ <meta name="assert" content="The clip property should clip elements whose
+ layout are governed by the CSS box model and that are abolutely positioned
+ with 'position: absolute;'. On pass you should see a green square and no
+ red.">
+</head>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="width: 100px; height: 100px; border: solid red 50px; position: absolute; background-color: green; clip: rect(50px, 150px, 150px, 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-absolute-positioned-002.html b/testing/web-platform/tests/css/css-masking/clip/clip-absolute-positioned-002.html
new file mode 100644
index 0000000000..53b2517a27
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-absolute-positioned-002.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property and rect function on div with position: fixed</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-absolute-positioned-ref.html">
+ <meta name="assert" content="The clip property should clip elements whose
+ layout are governed by the CSS box model and that are abolutely positioned
+ with 'position: fixed;'. On pass you should see a green square and no
+ red.">
+</head>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="width: 100px; height: 100px; border: solid red 50px; position: fixed; background-color: green; clip: rect(50px, 150px, 150px, 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-filter-order-ref.html b/testing/web-platform/tests/css/css-masking/clip/clip-filter-order-ref.html
new file mode 100644
index 0000000000..fe9511a8df
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-filter-order-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Clip should be applied after filtering</title>
+<link rel="author" title="Philip Rogers" href="mailto:pdr@chromium.org">
+
+<style>
+ body { margin: 0 }
+ #testcase {
+ position: absolute;
+ left: 10px;
+ width: 200px;
+ height: 200px;
+ background: green;
+ will-change: transform;
+ }
+</style>
+
+<div>
+ <p>Expected: A green box.<br>
+ There should be no red visible.<br>
+ There should be a crisp, clipped edge around the green box (no blurring).</p>
+</div>
+
+<div id="testcase"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-filter-order.html b/testing/web-platform/tests/css/css-masking/clip/clip-filter-order.html
new file mode 100644
index 0000000000..0570d02b85
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-filter-order.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Clip should be applied after filtering</title>
+<link rel="author" title="Philip Rogers" href="mailto:pdr@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#placement">
+<link rel="match" href="clip-filter-order-ref.html">
+
+<style>
+ body { margin: 0 }
+ #testcase {
+ position: absolute;
+ left: 10px;
+ width: 400px;
+ height: 400px;
+ background: green;
+ will-change: transform;
+ filter: drop-shadow(16px 16px 20px red);
+ clip: rect(0px, 200px, 200px, 0px);
+ }
+</style>
+
+<div>
+ <p>Expected: A green box.<br>
+ There should be no red visible.<br>
+ There should be a crisp, clipped edge around the green box (no blurring).</p>
+</div>
+
+<div id="testcase"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-fixed-pos-transform-descendant-001-ref.html b/testing/web-platform/tests/css/css-masking/clip/clip-fixed-pos-transform-descendant-001-ref.html
new file mode 100644
index 0000000000..ed78cb7338
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-fixed-pos-transform-descendant-001-ref.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<style>
+ html, body { margin: 0 }
+ div {
+ width: 100px;
+ height: 100px;
+ background: lime;
+ }
+</style>
+<div></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-fixed-pos-transform-descendant-001.html b/testing/web-platform/tests/css/css-masking/clip/clip-fixed-pos-transform-descendant-001.html
new file mode 100644
index 0000000000..395b0bc964
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-fixed-pos-transform-descendant-001.html
@@ -0,0 +1,38 @@
+<!doctype html>
+<title>CSS Masking: Transformed descendants of a fixed pos element under a clipped element get properly clipped</title>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="match" href="clip-fixed-pos-transform-descendant-001-ref.html">
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#clip-property">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1495791">
+<style>
+html, body { margin: 0; }
+
+#clip {
+ height: 100px;
+ width: 100px;
+ background: lime;
+ clip: rect(0, auto, auto, 0);
+ position: absolute;
+}
+
+#fixed {
+ position: fixed;
+ top: 0;
+ left: 0;
+ width: 100px;
+ height: 100px;
+}
+
+#clipped {
+ height: 100px;
+ width: 100px;
+ background: red;
+ transform: translateY(100px);
+}
+</style>
+<div id="clip">
+ <div id="fixed">
+ <div id="clipped"></div>
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-001.html b/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-001.html
new file mode 100644
index 0000000000..b295c89ba3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-001.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property does not clip on with negative values - 1</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-full-ref.html">
+ <meta name="assert" content="Negative values are permitted on rect function
+ for clip. Test that whole element is clipped if bottom edge is before top
+ edge. On pass you should see a green square and no red.">
+</head>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="background-color: green; width: 200px; height: 200px;">
+ <div style="width: 200px; height: 200px; background-color: red; position: absolute; clip: rect(0, -50px, 200px, 50px);"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-002.html b/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-002.html
new file mode 100644
index 0000000000..dd92e5b774
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-002.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property does not clip on with negative values - 2</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-full-ref.html">
+ <meta name="assert" content="Negative values are permitted on rect function
+ for clip. Test that whole element is clipped if right edge is before left
+ edge. On pass you should see a green square and no red.">
+</head>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="background-color: green; width: 200px; height: 200px;">
+ <div style="width: 200px; height: 200px; background-color: red; position: absolute; clip: rect(50px, 200px, -50px, 0);"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-003.html b/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-003.html
new file mode 100644
index 0000000000..5118135345
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-003.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property does not clip on with negative values - 3</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-vertical-stripe-ref.html">
+ <meta name="assert" content="Negative values are permited on rect function
+ for clip. Test that left edge can be negative. On pass you should see a
+ vertical blue stripe.">
+</head>
+<body>
+ <p>The test passes if there is only a vertical blue stripe.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(0, 50px, 200px, -50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-004.html b/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-004.html
new file mode 100644
index 0000000000..1fb5add9da
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-negative-values-004.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property does not clip on with negative values - 4</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-horizontal-stripe-ref.html">
+ <meta name="assert" content="Negative values are permited on rect function
+ for clip. Test that top edge can be negative. On pass you should see a
+ horizontal blue stripe.">
+</head>
+<body>
+ <p>The test passes if there is only a horizontal blue stripe.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(-50px, 200px, 50px, 0);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-no-clipping-001.html b/testing/web-platform/tests/css/css-masking/clip/clip-no-clipping-001.html
new file mode 100644
index 0000000000..3a63c2ca71
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-no-clipping-001.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property does not clip on 'auto'</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="The clip property should on 'auto'. On pass
+ you should see a green box with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: auto"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-no-clipping-002.html b/testing/web-platform/tests/css/css-masking/clip/clip-no-clipping-002.html
new file mode 100644
index 0000000000..a09e6a0a85
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-no-clipping-002.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property does not clip overflowing content on 'auto'.</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="The clip property should not clip overflowing
+ content of elements whose layout are governed by the CSS box model, the
+ position is absolute and the clip value is 'auto'. On pass you should see a
+ a green square with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; position: absolute; clip: auto;">
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green;"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-no-stacking-context-ref.html b/testing/web-platform/tests/css/css-masking/clip/clip-no-stacking-context-ref.html
new file mode 100644
index 0000000000..056af22375
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-no-stacking-context-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<p>Expected: A green box with no red visible.</p>
+<div style="width: 100px; height: 100px; background: green;"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-no-stacking-context.html b/testing/web-platform/tests/css/css-masking/clip/clip-no-stacking-context.html
new file mode 100644
index 0000000000..cbd07ee638
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-no-stacking-context.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Clip does not create a stacking context</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#propdef-clip">
+<link rel="match" href="clip-no-stacking-context-ref.html">
+<link rel="author" title="Philip Rogers" href="mailto:pdr@chromium.org">
+
+<style>
+ #bottom {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ background: red;
+ z-index: 1;
+ }
+ #clip {
+ position: absolute;
+ clip: rect(0px, 100px, 100px, 0px);
+ }
+ #top {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ background: green;
+ z-index: 3;
+ }
+</style>
+
+<p>Expected: A green box with no red visible.</p>
+<div id="bottom"></div>
+<!-- If #clip creates a stacking context, it will be below #bottom (which has a
+ higher z-index) which will force #top to be below #bottom as well. This
+ should not happen because #clip should not create a stacking context. -->
+<div id="clip">
+ <div id="top"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-001.html b/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-001.html
new file mode 100644
index 0000000000..613f6afebc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-001.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property and rect function on not absolutely positioned div - 1</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="The clip property should be ignored on
+ elements whose layout are governed by the CSS box model and are not
+ abolutely positioned. On pass you should see a green square with a blue
+ border.">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; clip: rect(50px, 150px, 150px, 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-002.html b/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-002.html
new file mode 100644
index 0000000000..4d071323f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-002.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property and rect function on not absolutely positioned div - 2</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="The clip property should be ignored on
+ elements whose layout are governed by the CSS box model and are not
+ abolutely positioned. Creating a stacking context with z-index does not
+ influence clipping behavior. On pass you should see a green box square with
+ a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; z-index: 10; clip: rect(50px, 150px, 150px, 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-003.html b/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-003.html
new file mode 100644
index 0000000000..ee3765db7a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-003.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property and rect function on not absolutely positioned div - 3</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="The clip property should be ignored on
+ elements whose layout are governed by the CSS box model and are not
+ abolutely positioned. Creating a 3d rednering context does not influence
+ clipping behavior. On pass you should see a green square with a blue
+ border.">
+</head>
+<body style="perspective: 400px;">
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; transform-style: preserve-3d; transform: translate3d(0, 0, 0); clip: rect(50px, 150px, 150px, 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-004.html b/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-004.html
new file mode 100644
index 0000000000..56825d10f6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-not-absolute-positioned-004.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property and rect function on not absolutely positioned div - 4</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="The clip property should be ignored on
+ elements whose layout are governed by the CSS box model and are not
+ abolutely positioned. position: relative does not influence clipping
+ behavior. On pass you should see a green square with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: relative; clip: rect(50px, 150px, 150px, 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-001.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-001.html
new file mode 100644
index 0000000000..6a1a064059
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-001.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property with rect function and auto values clip to border box - 1</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-overflow-hidden-ref.html">
+ <meta name="assert" content="A value of 'auto' in the rect function is
+ equal to the certain edge of the border box. The content should be clipped
+ to the border box. On pass you see a blue square and a smaller green square
+ in the bottom right corner of the blue square.">
+</head>
+<body>
+ <p>The test passes if there is a blue square and a smaller green square in the bottom right corner of the blue square.</p>
+ <div style="position: absolute; clip: rect(auto, auto, auto, auto); width: 100px; height: 100px;">
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green;"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-002.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-002.html
new file mode 100644
index 0000000000..0ee45183b8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-002.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property with rect function and auto values clip to border box - 2</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="A value of 'auto' in the rect function is
+ equal to the certain edge of the border box. The box shadow should be
+ clipped, since it is painted outside the border box. On pass you should see
+ a green square with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(auto, auto, auto, auto); box-shadow: 0 0 10px red;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-003.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-003.html
new file mode 100644
index 0000000000..5f12ae4863
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-003.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property with rect function and auto value for top value</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-rect-top-ref.html">
+ <meta name="assert" content="A value of 'auto' for 'top' in the rect
+ function is equal to the top edge of the border box. The box shadow should
+ be clipped, since it is painted outside the border box. On pass you should see a horizontal green stripe under a horizontal blue stripe.">
+</head>
+<body>
+ <p>The test passes if there is a horizontal green stripe under a horizontal blue stripe.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(auto, 150px, 100px, 50px); box-shadow: 0 0 10px red;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-004.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-004.html
new file mode 100644
index 0000000000..d5d5ce9b31
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-004.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property with rect function and auto value for right value</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-rect-right-ref.html">
+ <meta name="assert" content="A value of 'auto' for 'right' in the rect
+ function is equal to the top edge of the border box. The box shadow should
+ be clipped, since it is painted outside the border box. On pass you should
+ see a vertical blue stripe on the right side of a vertical green stripe.">
+</head>
+<body>
+ <p>The test passes if there is a vertical blue stripe on the right side of a vertical green stripe.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(50px, auto, 150px, 100px); box-shadow: 0 0 10px red;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-005.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-005.html
new file mode 100644
index 0000000000..b2b3b13a49
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-005.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property with rect function and auto value for bottom value</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-rect-bottom-ref.html">
+ <meta name="assert" content="A value of 'auto' for 'bottom' in the rect
+ function is equal to the top edge of the border box. The box shadow should
+ be clipped, since it is painted outside the border box. On pass you should
+ see a horizontal blue stripe under a horizontal green stripe.">
+</head>
+<body>
+ <p>The test passes if there is a horizontal blue stripe under a horizontal green stripe.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(100px, 150px, auto, 50px); box-shadow: 0 0 10px red;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-006.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-006.html
new file mode 100644
index 0000000000..410b93d28b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-auto-006.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test clip property with rect function and auto value for left value</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clipping-paths">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-rect-left-ref.html">
+ <meta name="assert" content="A value of 'auto' for 'left' in the rect
+ function is equal to the top edge of the border box. The box shadow should
+ be clipped, since it is painted outside the border box. On pass you should
+ see a vertical green stripe on the right side of a vertical blue stripe.">
+</head>
+<body>
+ <p>The test passes if there is a vertical green stripe on the right side of a vertical blue stripe.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(50px, 100px, 150px, auto); box-shadow: 0 0 10px red;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-001.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-001.html
new file mode 100644
index 0000000000..d15b324a4f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-001.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test comma separation of rect function on clip - no commas</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-absolute-positioned-ref.html">
+ <meta name="assert" content="Values for rect function on clip can be white
+ space or comma separated, but not both. Otherwise the property setting gets
+ ignored. Testing rect function with white space separation. On pass you
+ should see a green square and no red.">
+</head>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="width: 100px; height: 100px; border: solid red 50px; background-color: green; position: absolute; clip: rect(50px 150px 150px 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-002.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-002.html
new file mode 100644
index 0000000000..aad2aebe67
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-002.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test comma separation of rect function on clip - no comma between 1st and 2nd value</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="Values for rect function on clip can be white
+ space or comma separated, but not both. Otherwise the property setting gets
+ ignored. Testing rect function without comma separation between 1st and 2nd
+ value. On pass you should see a green square with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(50px 150px, 150px, 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-003.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-003.html
new file mode 100644
index 0000000000..875e97173e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-003.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test comma separation of rect function on clip - no comma between 2nd and 3rd value</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="Values for rect function on clip can be white
+ space or comma separated, but not both. Otherwise the property setting gets
+ ignored. Testing rect function without comma separation between 2nd and 3rd
+ value. On pass you should see a green square with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(50px, 150px 150px, 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-004.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-004.html
new file mode 100644
index 0000000000..2a8b9305df
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-comma-004.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Masking: Test comma separation of rect function on clip - no comma between 3rd and 4th value</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+ <link rel="match" href="reference/clip-no-clipping-ref.html">
+ <meta name="assert" content="Values for rect function on clip can be white
+ space or comma separated, but not both. Otherwise the property setting gets
+ ignored. Testing rect function without comma separation between 3rd and 4th
+ value. On pass you should see a green square with a blue border.">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green; position: absolute; clip: rect(50px, 150px, 150px 50px);"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-rect-scroll.html b/testing/web-platform/tests/css/css-masking/clip/clip-rect-scroll.html
new file mode 100644
index 0000000000..0c84ee299a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-rect-scroll.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Masking: Test clip property with rect function with overflow:scroll</title>
+<link rel="help" href="http://www.w3.org/TR/css-masking-1/#clip-property">
+<link rel="match" href="reference/clip-rect-scroll-ref.html">
+<html class="reftest-wait">
+<p>The test passes if there is a green square containing text (which can be scrolled
+with mouse wheel or touch). No scrollbars should be seen.</p>
+<div id="target" style="position: absolute; clip: rect(10px,100px,100px,10px);
+ width: 200px; height: 200px; overflow: scroll; background: red">
+ <div style="position: relative; top: 100px;
+ width: 100px; height: 100px; background: green">
+ </div>
+ <div style="height: 1000px"></div>
+</div>
+<script>
+requestAnimationFrame(() => {
+ requestAnimationFrame(() => {
+ target.scrollTop = 100;
+ document.documentElement.classList.remove("reftest-wait");
+ });
+});
+</script>
+</html>
+
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-transform-order-2.html b/testing/web-platform/tests/css/css-masking/clip/clip-transform-order-2.html
new file mode 100644
index 0000000000..bd8e909d76
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-transform-order-2.html
@@ -0,0 +1,30 @@
+<!doctype html>
+<title>Clips should be applied before transforms (when fixed positioned too)</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#placement">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1524966">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="match" href="clip-filter-order-ref.html">
+
+<style>
+ body { margin: 0; overflow: hidden; }
+ #testcase {
+ position: fixed;
+ left: -100px;
+ width: 400px;
+ height: 400px;
+ background: green;
+ transform: translateX(110px);
+ clip: rect(0px, 200px, 200px, 0px);
+ }
+</style>
+
+<div>
+ <p>Expected: A green box.<br>
+ There should be no red visible.<br>
+ There should be a crisp, clipped edge around the green box (no blurring).</p>
+</div>
+
+<div id="testcase"><div></div></div>
+
+<div id="padding" style="height: 100vh"></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip/clip-transform-order.html b/testing/web-platform/tests/css/css-masking/clip/clip-transform-order.html
new file mode 100644
index 0000000000..1f24864bc9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/clip-transform-order.html
@@ -0,0 +1,28 @@
+<!doctype html>
+<title>Clips should be applied before transforms</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#placement">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1524966">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="match" href="clip-filter-order-ref.html">
+
+<style>
+ body { margin: 0 }
+ #testcase {
+ position: absolute;
+ left: -100px;
+ width: 400px;
+ height: 400px;
+ background: green;
+ transform: translateX(110px);
+ clip: rect(0px, 200px, 200px, 0px);
+ }
+</style>
+
+<div>
+ <p>Expected: A green box.<br>
+ There should be no red visible.<br>
+ There should be a crisp, clipped edge around the green box (no blurring).</p>
+</div>
+
+<div id="testcase"><div></div></div>
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-absolute-positioned-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-absolute-positioned-ref.html
new file mode 100644
index 0000000000..2a9a49fd3a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-absolute-positioned-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="width: 100px; height: 100px; border: 50px solid white; background-color: green;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-full-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-full-ref.html
new file mode 100644
index 0000000000..f556d5f12a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-full-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a green square and no red.</p>
+ <div style="width: 200px; height: 200px; background-color: green;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-horizontal-stripe-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-horizontal-stripe-ref.html
new file mode 100644
index 0000000000..fccb18318d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-horizontal-stripe-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is only a horizontal blue stripe.</p>
+ <div style="width: 200px; height: 50px; background-color: blue;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-no-clipping-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-no-clipping-ref.html
new file mode 100644
index 0000000000..724f8c5194
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-no-clipping-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a green square with a blue border.</p>
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-overflow-hidden-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-overflow-hidden-ref.html
new file mode 100644
index 0000000000..e6a6e125e8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-overflow-hidden-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a blue square and a smaller green square in the bottom right corner of the blue square.</p>
+ <div style="overflow: hidden; width: 100px; height: 100px;">
+ <div style="width: 100px; height: 100px; border: solid blue 50px; background-color: green;"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-bottom-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-bottom-ref.html
new file mode 100644
index 0000000000..9642435bf1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-bottom-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a horizontal blue stripe under a horizontal green stripe.</p>
+ <div style="background-color: blue; width: 100px; height: 100px; border-left: 50px solid white; border-top: 100px solid white">
+ <div style="width: 100px; height: 50px; background-color: green;"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-left-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-left-ref.html
new file mode 100644
index 0000000000..b6dd6e0a48
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-left-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a vertical green stripe on the right side of a vertical blue stripe.</p>
+ <div style="background-color: green; width: 100px; height: 100px; border-top: 50px solid white;">
+ <div style="width: 50px; height: 100px; background-color: blue;"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-right-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-right-ref.html
new file mode 100644
index 0000000000..09b90e7614
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-right-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a vertical blue stripe on the right side of a vertical green stripe.</p>
+ <div style="background-color: blue; width: 100px; height: 100px; border-left: 100px solid white; border-top: 50px solid white;">
+ <div style="width: 50px; height: 100px; background-color: green;"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-scroll-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-scroll-ref.html
new file mode 100644
index 0000000000..a647e8a0c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-scroll-ref.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<p>The test passes if there is a green square containing text (which can be scrolled
+with mouse wheel or touch). No scrollbars should be seen.</p>
+<div style="position: relative; top: 10px; left: 10px; width: 90px; height: 90px; background: green">
+</div>
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-top-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-top-ref.html
new file mode 100644
index 0000000000..5ec30181f2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-rect-top-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is a horizontal green stripe under a horizontal blue stripe.</p>
+ <div style="background-color: green; width: 100px; height: 100px; margin-left: 50px;">
+ <div style="width: 100px; height: 50px; background-color: blue;"></div>
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/clip/reference/clip-vertical-stripe-ref.html b/testing/web-platform/tests/css/css-masking/clip/reference/clip-vertical-stripe-ref.html
new file mode 100644
index 0000000000..96ccc2c19c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/clip/reference/clip-vertical-stripe-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>CSS Reftest Reference</title>
+ <link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
+</head>
+<body>
+ <p>The test passes if there is only a vertical blue stripe.</p>
+ <div style="width: 50px; height: 200px; background-color: blue;"></div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/hit-test/clip-path-element-objectboundingbox-001.html b/testing/web-platform/tests/css/css-masking/hit-test/clip-path-element-objectboundingbox-001.html
new file mode 100644
index 0000000000..22d4bc0b0d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/hit-test/clip-path-element-objectboundingbox-001.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<title>Hit-test of clip-path objectBoundingBox &lt;clipPath> with additional transform</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+body {
+ margin: 0;
+}
+.box {
+ width: 100px;
+ height: 100px;
+ background-color: blue;
+ margin: 100px;
+ clip-path: url(#clip);
+}
+</style>
+<div class="box"></div>
+<svg height="0">
+ <clipPath id="clip" clipPathUnits="objectBoundingBox" transform="scale(0.01, 0.01)">
+ <polygon points="50,0 100,50 50,100 0,50"/>
+ </clipPath>
+</svg>
+<script>
+function assert_element_at(element, pointlist) {
+ for (let point of pointlist) {
+ let result = document.elementFromPoint(point[0], point[1]);
+ assert_equals(result, element, point.join(','));
+ }
+}
+
+test(function() {
+ let div = document.querySelector('.box');
+
+ // Points inside clip-path.
+ assert_element_at(div, [[150, 150], [150, 125], [150, 175], [125, 150], [175, 150]]);
+
+ // Points outside clip-path.
+ assert_element_at(document.body, [[120, 120], [180, 120], [120, 180], [180, 180]]);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/hit-test/clip-path-element-objectboundingbox-002.html b/testing/web-platform/tests/css/css-masking/hit-test/clip-path-element-objectboundingbox-002.html
new file mode 100644
index 0000000000..1932848a13
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/hit-test/clip-path-element-objectboundingbox-002.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<title>Hit-test of clip-path nested objectBoundingBox &lt;clipPath></title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+body {
+ margin: 0;
+}
+.box {
+ width: 200px;
+ height: 200px;
+ background-color: blue;
+ margin: 100px;
+ clip-path: url(#clip);
+}
+</style>
+<div class="box"></div>
+<svg height="0">
+ <clipPath id="nested" clipPathUnits="objectBoundingBox">
+ <circle cx="0.25" cy="0.25" r="0.25"/>
+ </clipPath>
+ <clipPath id="clip" clipPathUnits="objectBoundingBox" clip-path="url(#nested)">
+ <rect width="0.5" height="0.5"/>
+ </clipPath>
+</svg>
+<script>
+function assert_element_at(element, pointlist) {
+ for (let point of pointlist) {
+ let result = document.elementFromPoint(point[0], point[1]);
+ assert_equals(result, element, point.join(','));
+ }
+}
+
+test(function() {
+ let div = document.querySelector('.box');
+
+ // Points inside clip-path.
+ assert_element_at(div, [[150, 150], [150, 125], [150, 175], [125, 150], [175, 150]]);
+
+ // Points outside clip-path.
+ assert_element_at(document.body, [[110, 110], [190, 110], [110, 190], [190, 190]]);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/hit-test/clip-path-element-userspaceonuse-001.html b/testing/web-platform/tests/css/css-masking/hit-test/clip-path-element-userspaceonuse-001.html
new file mode 100644
index 0000000000..2b8beab910
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/hit-test/clip-path-element-userspaceonuse-001.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<title>Hit-test of clip-path userSpaceOnUse &lt;clipPath></title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+body {
+ margin: 0;
+}
+.box {
+ width: 100px;
+ height: 100px;
+ background-color: blue;
+ margin: 100px;
+ clip-path: url(#clip);
+}
+</style>
+<div class="box"></div>
+<svg height="0">
+ <clipPath id="clip" clipPathUnits="userSpaceOnUse">
+ <polygon points="50,0 100,50 50,100 0,50"/>
+ </clipPath>
+</svg>
+<script>
+function assert_element_at(element, pointlist) {
+ for (let point of pointlist) {
+ let result = document.elementFromPoint(point[0], point[1]);
+ assert_equals(result, element, point.join(','));
+ }
+}
+
+test(function() {
+ let div = document.querySelector('.box');
+
+ // Points inside clip-path.
+ assert_element_at(div, [[150, 150], [150, 125], [150, 175], [125, 150], [175, 150]]);
+
+ // Points outside clip-path.
+ assert_element_at(document.body, [[120, 120], [180, 120], [120, 180], [180, 180]]);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/hit-test/clip-path-shape-polygon-and-box-shadow.html b/testing/web-platform/tests/css/css-masking/hit-test/clip-path-shape-polygon-and-box-shadow.html
new file mode 100644
index 0000000000..23009f76e5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/hit-test/clip-path-shape-polygon-and-box-shadow.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<title>Hit-test of clip-path polygon combined with box-shadow</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+body {
+ margin: 0;
+}
+.box {
+ width: 100px;
+ height: 100px;
+ background-color: blue;
+ box-shadow: -100px 0px red;
+ clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
+}
+</style>
+<div class="box"></div>
+<script>
+function assert_element_at(element, pointlist) {
+ for (let point of pointlist) {
+ let result = document.elementFromPoint(point[0], point[1]);
+ assert_equals(result, element, point.join(','));
+ }
+}
+
+test(function() {
+ let div = document.querySelector('.box');
+
+ // Points inside clip-path.
+ assert_element_at(div, [[50, 50], [50, 25], [50, 75], [25, 50], [75, 50]]);
+
+ // Points outside clip-path.
+ assert_element_at(document.body, [[20, 20], [80, 20], [20, 80], [80, 80]]);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-masking/idlharness.html b/testing/web-platform/tests/css/css-masking/idlharness.html
new file mode 100644
index 0000000000..c415eaaa67
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/idlharness.html
@@ -0,0 +1,31 @@
+<!doctype html>
+<title>css-masking IDL tests</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/WebIDLParser.js"></script>
+<script src="/resources/idlharness.js"></script>
+
+<script>
+ 'use strict';
+
+ idl_test(
+ ['css-masking'],
+ ['SVG', 'html', 'dom'],
+ idl_array => {
+ idl_array.add_objects({
+ SVGClipPathElement: [document.querySelector('#clip1')],
+ SVGMaskElement: [document.querySelector('#mask1')],
+ });
+ }
+ );
+</script>
+
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+ <clipPath id="clip1">
+ <rect x="50" y="50" width="100" height="100" />
+ </clipPath>
+ <mask id="mask1" x="0" y="0" width="1" height="1" maskContentUnits="objectBoundingBox">
+ <rect x="0" y="0" width="1" height="1" fill="white" />
+ </mask>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/inheritance.sub.html b/testing/web-platform/tests/css/css-masking/inheritance.sub.html
new file mode 100644
index 0000000000..95424204d5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/inheritance.sub.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Inheritance of CSS Masking properties</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#property-index">
+<meta name="assert" content="Properties inherit or not according to the spec.">
+<meta name="assert" content="Properties have initial values according to the spec.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/inheritance-testcommon.js"></script>
+</head>
+<body>
+<div id="container">
+<div id="target"></div>
+</div>
+<script>
+assert_not_inherited('clip', 'auto', 'rect(10px, 20px, 30px, 40px)');
+assert_not_inherited('clip-path', 'none', 'url("http://{{host}}/")');
+assert_inherited('clip-rule', 'nonzero', 'evenodd');
+assert_not_inherited('mask-border-mode', 'alpha', 'luminance');
+assert_not_inherited('mask-border-outset', '0', '10px 20px 30px 40px');
+assert_not_inherited('mask-border-repeat', 'stretch', 'round space');
+assert_not_inherited('mask-border-slice', '0', '1 2 3 4 fill');
+assert_not_inherited('mask-border-source', 'none', 'url("http://{{host}}/")');
+assert_not_inherited('mask-border-width', 'auto', '10px 20px 30px 40px');
+assert_not_inherited('mask-clip', 'border-box', 'no-clip');
+assert_not_inherited('mask-composite', 'add', 'exclude');
+assert_not_inherited('mask-image', 'none', 'url("http://{{host}}/")');
+assert_not_inherited('mask-mode', 'match-source', 'luminance');
+assert_not_inherited('mask-origin', 'border-box', 'padding-box');
+assert_not_inherited('mask-position', '0% 0%', '10px 20px');
+assert_not_inherited('mask-repeat', 'repeat', 'space round');
+assert_not_inherited('mask-size', 'auto', '10px 20px');
+assert_not_inherited('mask-type', 'luminance', 'alpha');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-1-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-1-ref.html
new file mode 100644
index 0000000000..3925bd4f1d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-1-ref.html
@@ -0,0 +1,50 @@
+<!DOCTYPE HTML>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS mask-clip reference</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ position: absolute;
+ top: 10px;
+ background-color: purple;
+ }
+
+ div.border {
+ left: 10px;
+ margin: 1px 4px;
+ width: 60px;
+ height: 25px;
+ }
+
+ div.padding {
+ left: 110px;
+ margin: 9px 10px;
+ width: 52px;
+ height: 17px;
+ }
+
+ div.content {
+ left: 210px;
+ margin: 15px 13px;
+ width: 40px;
+ height: 11px;
+ }
+
+ div.no-clip {
+ left: 310px;
+ margin: 1px 4px;
+ width: 100px;
+ height: 25px;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="color border"></div>
+ <div class="color padding"></div>
+ <div class="color content"></div>
+ <div class="color no-clip"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-1.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-1.html
new file mode 100644
index 0000000000..9c1448439e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-1.html
@@ -0,0 +1,77 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-clip: clip mask image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-clip">
+ <link rel="match" href="mask-clip-1-ref.html">
+ <meta name="assert" content="border-box, padding-box, content-box and no-clip values of mask-clip should clip to the appropriate boxes.">
+ <style type="text/css">
+ div.outer {
+ /*
+ * content box: 40 x 20
+ * padding box: 52 x 38
+ * border box: 60 x 50
+ * margin box: 66 x 54
+ */
+ background-color: purple;
+ position: absolute;
+ top: 10px;
+ margin: 1px 2px 3px 4px;
+ border: solid transparent;
+ border-width: 8px 2px 4px 6px;
+ padding: 6px 9px 12px 3px;
+ width: 40px;
+ height: 20px;
+ }
+
+ div.mask {
+ mask-size: 100% 100%;
+ mask-origin: border-box;
+ mask-image: url(support/transparent-100x50-blue-100x50.svg);
+ }
+
+ div.border {
+ left: 10px;
+ mask-clip: border-box;
+ }
+
+ div.padding {
+ left: 110px;
+ mask-clip: padding-box;
+ }
+
+ div.content {
+ left: 210px;
+ mask-clip: content-box;
+ }
+
+ div.no-clip {
+ background-color: yellow;
+ left: 310px;
+ mask-clip: no-clip;
+ }
+
+ div.no-clip-inner {
+ background-color: purple;
+ position: absolute;
+ /* allign with border area of the parent*/
+ top: -8px;
+ left: -6px;
+ width: 100px;
+ height: 50px;
+ }
+
+ </style>
+ </head>
+ <body>
+ <div class="outer mask border"></div>
+ <div class="outer mask padding"></div>
+ <div class="outer mask content"></div>
+ <div class="outer mask no-clip">
+ <div class="no-clip-inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-2-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-2-ref.html
new file mode 100644
index 0000000000..5b72b6b942
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-2-ref.html
@@ -0,0 +1,28 @@
+<!DOCTYPE HTML>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS mask-clip reference</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ svg {
+ position: absolute;
+ top: 10px;
+ border: 1px solid black;
+ }
+ </style>
+ </head>
+ <body>
+ <svg width="200" height="200" style="left: 10px;">
+ <rect x="20" y="20" width="100" height="100" fill="blue"/>
+ </svg>
+ <svg width="200" height="200" style="left: 220px;">
+ <rect x="50" y="50" width="50" height="50" fill="blue"/>
+ </svg>
+ <svg width="200" height="200" style="left: 10px; top: 220px;">
+ <rect x="50" y="50" width="50" height="50" fill="green"/>
+ <rect x="60" y="60" width="40" height="40" fill="blue"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-2.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-2.html
new file mode 100644
index 0000000000..2953723ea2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-clip-2.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-clip: clip mask image</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-clip">
+ <link rel="match" href="mask-clip-2-ref.html">
+ <meta name="assert" content="fill-box, stroke-box and view-box values of mask-clip should clip to the appropriate boxes.">
+ <style type="text/css">
+ svg {
+ position: absolute;
+ top: 10px;
+ border: 1px solid black;
+ }
+
+ rect.mask {
+ fill: blue;
+ mask-origin: fill-box;
+ mask-repeat: no-repeat;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ }
+
+ rect.view {
+ mask-clip: view-box;
+ }
+
+ rect.fill {
+ mask-clip: fill-box;
+ }
+
+ rect.stroke {
+ mask-clip: stroke-box;
+ }
+ </style>
+ </head>
+ <body>
+ <svg width="200" height="200" viewBox="100 100 100 100" preserveAspectRatio="none" style="left: 10px;">
+ <rect class="view mask" x="110" y="110" width="50" height="100"/>
+ </svg>
+ <svg width="200" height="200" style="left: 220px;">
+ <rect class="fill mask" x="50" y="50" width="150" height="150"/>
+ </svg>
+ <svg width="200" height="200" style="left: 10px; top: 220px;">
+ <rect class="stroke mask" x="50" y="50" width="100" height="100" stroke="green" stroke-width="20"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1-ref.html
new file mode 100644
index 0000000000..9249622cc4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1-ref.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS mask-composite reference</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.add {
+ left: 10px;
+ background-image: url(support/blue-100x50-transparent-100x50.svg);
+ }
+
+ div.intersect {
+ left: 230px;
+ background-image: url(support/blue-100x50-transparent-100x50.svg);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="add"></div>
+ <div class="intersect"></div>
+ </body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1a.html
new file mode 100644
index 0000000000..795e52b8ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1a.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-composite: compose vector image</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-composite">
+ <link rel="match" href="mask-composite-1-ref.html">
+ <meta name="assert" content="Test checks that vector-mask-image can be composed correctly by different mask-composite value.">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top:10px;
+ mask-image: url(support/blue-100x50-transparent-100x50.svg),
+ url(support/blue-100x50-transparent-100x50.svg);
+ }
+
+ div.add {
+ left: 10px;
+ mask-composite: add;
+ }
+
+ div.subtract {
+ left: 120px;
+ mask-composite: subtract;
+ }
+
+ div.intersect {
+ left: 230px;
+ mask-composite: intersect;
+ }
+
+ div.exclude {
+ left: 340px;
+ mask-composite: exclude;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="add"></div>
+ <div class="subtract"></div>
+ <div class="intersect"></div>
+ <div class="exclude"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1b.html
new file mode 100644
index 0000000000..be158c923b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1b.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-composite: compose raster image</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-composite">
+ <link rel="match" href="mask-composite-1-ref.html">
+ <meta name="assert" content="Test checks that raster-mask-image can be composed correctly by different mask-composite value.">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top:10px;
+ mask-image: url(support/blue-100x50-transparent-100x50.png),
+ url(support/blue-100x50-transparent-100x50.png);
+ }
+
+ div.add {
+ left: 10px;
+ mask-composite: add;
+ }
+
+ div.subtract {
+ left: 120px;
+ mask-composite: subtract;
+ }
+
+ div.intersect {
+ left: 230px;
+ mask-composite: intersect;
+ }
+
+ div.exclude {
+ left: 340px;
+ mask-composite: exclude;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="add"></div>
+ <div class="subtract"></div>
+ <div class="intersect"></div>
+ <div class="exclude"></div>
+ </body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1c.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1c.html
new file mode 100644
index 0000000000..0eb098d1b7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1c.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-composite: compose svg mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-composite">
+ <link rel="match" href="mask-composite-1-ref.html">
+ <meta name="assert" content="Test checks that vector-mask-image can be composed correctly by different mask-composite value.">
+ <svg height="0">
+ <mask id="rectMask" x="0" y="0" width="100" height="100" >
+ <rect x="0" y="50" width="100" height="50" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top:10px;
+ mask-image: url(#rectMask),
+ url(#rectMask);
+ }
+
+ div.add {
+ left: 10px;
+ mask-composite: add;
+ }
+
+ div.subtract {
+ left: 120px;
+ mask-composite: subtract;
+ }
+
+ div.intersect {
+ left: 230px;
+ mask-composite: intersect;
+ }
+
+ div.exclude {
+ left: 340px;
+ mask-composite: exclude;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="add"></div>
+ <div class="subtract"></div>
+ <div class="intersect"></div>
+ <div class="exclude"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1d.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1d.html
new file mode 100644
index 0000000000..efd26ecb3d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-1d.html
@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-composite: compose vector image</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-composite">
+ <link rel="match" href="mask-composite-1-ref.html">
+ <meta name="assert" content="Test checks that whether mask-composite is filled automatically according to the number of mask layers.">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.add {
+ left: 10px;
+ mask-composite: add;
+ mask-image: url(support/blue-100x50-transparent-100x50.svg),
+ url(support/blue-100x50-transparent-100x50.svg),
+ url(support/blue-100x50-transparent-100x50.svg);
+ }
+
+ div.intersect {
+ left: 120px;
+ mask-composite: intersect;
+ mask-image: url(support/blue-100x50-transparent-100x50.svg),
+ url(support/transparent-100x50-blue-100x50.svg),
+ linear-gradient(rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 1) 100%);
+ }
+
+ div.subtract {
+ left: 230px;
+ mask-composite: subtract;
+ mask-image: url(support/blue-100x50-transparent-100x50.svg),
+ url(support/blue-100x50-transparent-100x50.svg),
+ url(support/blue-100x50-transparent-100x50.svg);
+ }
+
+ div.exclude {
+ left: 340px;
+ mask-composite: exclude;
+ mask-image: url(support/transparent-100x50-blue-100x50.svg),
+ linear-gradient(rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 1) 100%),
+ url(support/blue-100x50-transparent-100x50.svg);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="add"></div>
+ <div class="intersect"></div>
+ <div class="subtract"></div>
+ <div class="exclude"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2-ref.html
new file mode 100644
index 0000000000..cbf91daad9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2-ref.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS mask-composite reference</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.add {
+ left: 10px;
+ background-color: blue;
+ }
+
+ div.subtract {
+ left: 120px;
+ background-image: url(support/blue-100x50-transparent-100x50.svg);
+ }
+
+ div.exclude {
+ left: 340px;
+ background-color: blue;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="add"></div>
+ <div class="subtract"></div>
+ <div class="exclude"></div>
+ </body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2a.html
new file mode 100644
index 0000000000..7db800814c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2a.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-composite: compose vector image</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-composite">
+ <link rel="match" href="mask-composite-2-ref.html">
+ <meta name="assert" content="Test checks that vector-mask-image can be composed correctly by different mask-composite value.">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top:10px;
+ mask-image: url(support/blue-100x50-transparent-100x50.svg),
+ url(support/transparent-100x50-blue-100x50.svg);
+ }
+
+ div.add {
+ left: 10px;
+ mask-composite: add;
+ }
+
+ div.subtract {
+ left: 120px;
+ mask-composite: subtract;
+ }
+
+ div.intersect {
+ left: 230px;
+ mask-composite: intersect;
+ }
+
+ div.exclude {
+ left: 340px;
+ mask-composite: exclude;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="add"></div>
+ <div class="subtract"></div>
+ <div class="intersect"></div>
+ <div class="exclude"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2b.html
new file mode 100644
index 0000000000..3fd983fb11
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2b.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-composite: compose raster image</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-composite">
+ <link rel="match" href="mask-composite-2-ref.html">
+ <meta name="assert" content="Test checks that raster-mask-image can be composed correctly by different mask-composite value.">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top:10px;
+ mask-image: url(support/blue-100x50-transparent-100x50.png),
+ url(support/transparent-100x50-blue-100x50.png);
+ }
+
+ div.add {
+ left: 10px;
+ mask-composite: add;
+ }
+
+ div.subtract {
+ left: 120px;
+ mask-composite: subtract;
+ }
+
+ div.intersect {
+ left: 230px;
+ mask-composite: intersect;
+ }
+
+ div.exclude {
+ left: 340px;
+ mask-composite: exclude;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="add"></div>
+ <div class="subtract"></div>
+ <div class="intersect"></div>
+ <div class="exclude"></div>
+ </body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2c.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2c.html
new file mode 100644
index 0000000000..2b26e9ac66
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-composite-2c.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-composite: compose SVG mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-composite">
+ <link rel="match" href="mask-composite-2-ref.html">
+ <meta name="assert" content="Test checks that svg-mask can be composed correctly by different mask-composite value.">
+ <svg height="0">
+ <mask id="rectMask1" x="0" y="0" width="100" height="100" >
+ <rect x="0" y="50" width="100" height="50" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ <mask id="rectMask2" x="0" y="0" width="100" height="100" >
+ <rect x="0" y="0" width="100" height="50" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top:10px;
+ mask-image: url(#rectMask1),
+ url(#rectMask2);
+ }
+
+ div.add {
+ left: 10px;
+ mask-composite: add;
+ }
+
+ div.subtract {
+ left: 120px;
+ mask-composite: subtract;
+ }
+
+ div.intersect {
+ left: 230px;
+ mask-composite: intersect;
+ }
+
+ div.exclude {
+ left: 340px;
+ mask-composite: exclude;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="add"></div>
+ <div class="subtract"></div>
+ <div class="intersect"></div>
+ <div class="exclude"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1-ref.html
new file mode 100644
index 0000000000..2800844061
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1-ref.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ background-color: purple;
+ width: 100px;
+ height: 50px;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1a.html
new file mode 100644
index 0000000000..62e00660a3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1a.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-1-ref.html">
+ <meta name="assert" content="Test checks whether image as mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ background-color: purple;
+ width: 100px;
+ height: 100px;
+ }
+
+ div.mask-by-png {
+ mask-image: url(support/transparent-100x50-blue-100x50.png);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="mask-by-png"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1b.html
new file mode 100644
index 0000000000..9bf74102f9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1b.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-1-ref.html">
+ <meta name="assert" content="Test checks whether SVG image as mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ background-color: purple;
+ width: 100px;
+ height: 100px;
+ }
+
+ div.mask-by-svg {
+ mask-image: url(support/transparent-100x50-blue-100x50.svg);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="mask-by-svg"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1c.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1c.html
new file mode 100644
index 0000000000..1328d06c95
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1c.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-1-ref.html">
+ <meta name="assert" content="Test checks whether SVG mask element as mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ background-color: purple;
+ width: 100px;
+ height: 100px;
+ }
+
+ div.mask-by-svg-mask {
+ mask-image: url(support/mask-half-transparent-100x100.svg#mask);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="mask-by-svg-mask"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1d.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1d.html
new file mode 100644
index 0000000000..11f0ae7d93
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-1d.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask layer image</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-1-ref.html">
+ <meta name="assert" content="Test checks whether treat unresolvable mask as no-mask for a SVG element embedded in HTML document.">
+ </head>
+ <body>
+ <svg width="100" height="100">
+ <rect x="0" y="0" width="100" height="50" fill="purple" mask="url(#foo)"/>
+ </svg>
+ </body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-2-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-2-ref.html
new file mode 100644
index 0000000000..db949934e4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-2-ref.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ background-image: linear-gradient(rgba(128,0,128,0), rgba(128,0,128,1));
+ width: 100px;
+ height: 100px;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-2.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-2.html
new file mode 100644
index 0000000000..a071cff3fa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-2.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-2-ref.html">
+ <meta name="assert" content="Test checks whether gradient CSS image as mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ background-color: purple;
+ width: 100px;
+ height: 100px;
+ }
+
+ div.mask-by-gradient-1 {
+ mask-image: linear-gradient(rgba(0,0,255,0), rgba(0,0,255,1)); /* blue gradient mask */
+ }
+
+ div.mask-by-gradient-2 {
+ mask-image: linear-gradient(rgba(255,0,0,0), rgba(255,0,0,1)); /* red gradient mask */
+ }
+ </style>
+ </head>
+ <body>
+ <div class="mask-by-gradient-1"></div>
+ <div class="mask-by-gradient-2"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3-ref.html
new file mode 100644
index 0000000000..ec29e333c7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3-ref.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: multiple SVG masks</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <svg height="0">
+ <mask id="mask" x="0" y="0" width="1" height="1">
+ <rect x="0" y="0" width="50" height="50" style="stroke:none; fill: #ffffff"/>
+ <circle cx="50" cy="50" r="25" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: purple;
+ mask: url(#mask);
+ width: 100px;
+ height: 100px;
+ }
+ </style>
+
+ </head>
+
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3a.html
new file mode 100644
index 0000000000..b3a6d39650
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3a.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: multiple SVG masks</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-3-ref.html">
+ <meta name="assert" content="Test checks whether SVG mask as mask layer works correctly or not.">
+ <svg height="0">
+ <mask id="mask1" x="0" y="0" width="1" height="1" >
+ <rect x="0" y="0" width="50" height="50" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ <mask id="mask2" x="0" y="0" width="1" height="1" >
+ <circle cx="50" cy="50" r="25" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: purple;
+ mask-image: url(#mask1), url(#mask2);
+ width: 100px;
+ height: 100px;
+ }
+ </style>
+
+ </head>
+
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3b.html
new file mode 100644
index 0000000000..bd805cde97
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3b.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: interleave SVG mask with image mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-3-ref.html">
+ <meta name="assert" content="Test checks whether SVG mask and image as mask layer works correctly or not.">
+ <svg height="0">
+ <mask id="mask1" x="0" y="0" width="1" height="1" >
+ <circle cx="50" cy="50" r="25" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg), url(#mask1);
+ mask-repeat: no-repeat, repeat;
+ mask-position: 0 0, 0 0;
+ width: 100px;
+ height: 100px;
+ }
+ </style>
+
+ </head>
+
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3c.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3c.html
new file mode 100644
index 0000000000..32bd4454d7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3c.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: interleave SVG mask with image mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-3-ref.html">
+ <meta name="assert" content="Test checks whether SVG mask and image as mask layer works correctly or not.">
+ <svg height="0">
+ <mask id="mask1" x="0" y="0" width="1" height="1" >
+ <circle cx="50" cy="50" r="25" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: purple;
+ mask-image: url(#mask1), url(support/50x50-opaque-blue.svg);
+ mask-repeat: repeat-x, no-repeat;
+ mask-position: 0 0, 0 0;
+ width: 100px;
+ height: 100px;
+ }
+ </style>
+
+ </head>
+
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3d.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3d.html
new file mode 100644
index 0000000000..f1ef1be709
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3d.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: interleave SVG mask with image mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-3-ref.html">
+ <meta name="assert" content="Test checks whether SVG mask and image as mask layer works correctly or not.">
+ <svg height="0">
+ <mask id="mask1" x="10%" y="10%" width="0.8" height="0.8" >
+ <circle cx="50" cy="50" r="25" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: purple;
+ mask: url(#mask1), url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat, no-repeat;
+ mask-position: 0 0, 0 0;
+ width: 100px;
+ height: 100px;
+ }
+ </style>
+
+ </head>
+
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3e.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3e.html
new file mode 100644
index 0000000000..15223e34d6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3e.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: interleave SVG mask with image mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-3-ref.html">
+ <meta name="assert" content="Test checks whether SVG mask and image as mask layer works correctly or not.">
+ <svg height="0">
+ <mask id="mask1" x="0" y="0" width="1" height="1" >
+ <circle cx="50" cy="50" r="25" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div.outter {
+ margin: 0px;
+ padding: 0px;
+ width: 200px;
+ height: 200px;
+ transform: translate(-10px, -10px);
+ }
+ div.inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg), url(#mask1);
+ mask-repeat: no-repeat, repeat;
+ mask-position: 0 0, 0 0;
+ /*mask: url(#mask1);*/
+ width: 100px;
+ height: 100px;
+ transform: translate(10px, 10px);
+ }
+ </style>
+
+ </head>
+ <body>
+ <div class="outter">
+ <div class="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3f.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3f.html
new file mode 100644
index 0000000000..e925105baa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3f.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: SVG masks apply on border area</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-3-ref.html">
+ <meta name="assert" content="Test checks whether SVG mask layer can be positioned on box-shadow area correctly or not.">
+ <svg height="0">
+ <mask id="mask1" x="-100" y="-100" width="300" height="300" maskUnits="userSpaceOnUse">
+ <rect x="-100" y="-100" width="50" height="50" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ <mask id="mask2" x="-100" y="-100" width="300" height="300" maskUnits="userSpaceOnUse">
+ <circle cx="-50" cy="-50" r="25" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: red;
+ mask-image: url(#mask1), url(#mask2);
+ box-shadow: 0 0 0 100px purple;
+ width: 100px;
+ height: 100px;
+ position: relative;
+ left: 100px;
+ top: 100px;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3g.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3g.html
new file mode 100644
index 0000000000..1236c0c334
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3g.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: SVG masks apply on border area</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-3-ref.html">
+ <meta name="assert" content="Test checks whether apply transfrom to a SVG mask layer works correctly or not.">
+ <svg height="0">
+ <mask id="mask1" x="-100" y="-100" width="300" height="300" maskUnits="userSpaceOnUse">
+ <rect x="-100" y="-100" width="50" height="50" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ <mask id="mask2" x="-100" y="-100" width="300" height="300" maskUnits="userSpaceOnUse">
+ <circle cx="-50" cy="-50" r="25" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div.outter {
+ margin: 0px;
+ padding: 0px;
+ width: 200px;
+ height: 200px;
+ transform: translate(-10px, -20px);
+ }
+ div.inner {
+ background-color: red;
+ mask-image: url(#mask1), url(#mask2);
+ mask-repeat: no-repeat, no-repeat;
+ box-shadow: 0 0 0 100px purple;
+ position: relative;
+ width: 100px;
+ height: 100px;
+ left: 100px;
+ top: 100px;
+ transform: translate(10px, 20px);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outter">
+ <div class="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3h.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3h.html
new file mode 100644
index 0000000000..37608bfe20
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3h.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: clip-path in SVG mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-3-ref.html">
+ <meta name="assert" content="Test checks whether clip-path in SVG mask works correctly or not.">
+ <svg height="0">
+ <mask id="mask1" x="0" y="0" width="1" height="1" >
+ <rect x="0" y="0" width="50" height="50" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ <mask id="mask2" x="0" y="0" width="1" height="1" >
+ <rect x="25" y="25" width="50" height="50" style="stroke:none; fill: #ffffff" clip-path="circle(50% at 50% 50%)"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: purple;
+ mask-image: url(#mask1), url(#mask2);
+ width: 100px;
+ height: 100px;
+ }
+ </style>
+
+ </head>
+
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3i.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3i.html
new file mode 100644
index 0000000000..f7ecf9e691
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-3i.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: interleave SVG mask with image mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-3-ref.html">
+ <meta name="assert" content="Test checks whether SVG mask and image as mask layer works correctly or not.">
+ <svg height="0">
+ <mask id="mask1" x="0" y="0" width="1" height="1" >
+ <circle cx="50" cy="50" r="25" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ rect {
+ fill: purple;
+ mask-image: url(#mask1), url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat, no-repeat;
+ }
+ </style>
+
+ </head>
+
+ <body>
+ <br>
+ <svg width="100" height="100">
+ <rect x="0" y="0" width="100" height="100"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-4a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-4a.html
new file mode 100644
index 0000000000..bffcedae9a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-4a.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: unresovlable mask url</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="/css/reference/blank.html">
+ <meta name="assert" content="Test checks non-existent url should be counted as an image layer of transparent black.">
+ <style type="text/css">
+ div {
+ background-color: purple;
+ width: 100px;
+ height: 100px;
+ }
+
+ div.mask-by-png {
+ mask-image: url(non-existent.png);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="mask-by-png"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-4b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-4b.html
new file mode 100644
index 0000000000..b05232a1e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-4b.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: unresovlable mask url</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="/css/reference/blank.html">
+ <meta name="assert" content="Test checks a mask reference to a none-mask SVG element should be counted as an image layer of transparent black.">
+ <svg height="0">
+ <clipPath id="clip1">
+ <circle cx="50" cy="50" r="25"/>
+ </clipPath>
+ </svg>
+ <style type="text/css">
+ div {
+ background-color: purple;
+ width: 100px;
+ height: 100px;
+ }
+
+ div.mask-by-reference {
+ mask-image: url(#clip1);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="mask-by-reference"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-5-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-5-ref.html
new file mode 100644
index 0000000000..19a251ef0f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-5-ref.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: data url mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ background-color: purple;
+ width: 50px;
+ height: 50px;
+ }
+ </style>
+ </head>
+ <body>
+ <div/>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-5.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-5.html
new file mode 100644
index 0000000000..d98ddf8de5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-5.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: data url mask</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-5-ref.html">
+ <meta name="assert" content="Test checks handling data url mask correctly.">
+ <style type="text/css">
+ div {
+ background-color: purple;
+ width: 50px;
+ height: 50px;
+ }
+ div.mask-by-data-url {
+ /* a 50x50 opaque blue rect */
+ mask: url("data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIj8+Cjxzdmcgd2lkdGg9IjUwIiBoZWlnaHQ9IjUwIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPgogIDxyZWN0IHg9IjAiIHk9IjAiICB3aWR0aD0iNTAiIGhlaWdodD0iNTAiIGZpbGw9ImJsdWUiIGZpbGwtb3BhY2l0eT0iMSIvPgo8L3N2Zz4K");
+ }
+ </style>
+ </head>
+ <body>
+ <div class="mask-by-data-url"/>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-6-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-6-ref.html
new file mode 100644
index 0000000000..d85e075fd4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-6-ref.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask on inline element</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ font-size: 100px;
+ line-height: 100px;
+ }
+
+ div.mask-by-png {
+ mask-image: url(support/transparent-100x50-blue-100x50.png);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="mask-by-png">A</div>
+ <div class="mask-by-png">B</div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-6.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-6.html
new file mode 100644
index 0000000000..ac31e4cf4e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-6.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask on inline element</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-image-6-ref.html">
+ <meta name="assert" content="Test checks whether mask on inline elemnt works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+ span {
+ font-size: 100px;
+ line-height: 100px;
+ mask-image: url(support/transparent-100x50-blue-100x50.png);
+ mask-position: center;
+ mask-repeat: repeat;
+ }
+
+ </style>
+ </head>
+ <body>
+ <div>
+ <span>A B</span>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-clip-exclude-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-clip-exclude-ref.html
new file mode 100644
index 0000000000..5d82c5cf27
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-clip-exclude-ref.html
@@ -0,0 +1,10 @@
+<!doctype html>
+<title>CSS test reference</title>
+<style>
+ div {
+ width: 100px;
+ height: 100px;
+ border: 10px solid green;
+ }
+</style>
+<div></div>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-clip-exclude.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-clip-exclude.html
new file mode 100644
index 0000000000..375fe2de23
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-clip-exclude.html
@@ -0,0 +1,19 @@
+<!doctype html>
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1697311">
+<link rel="author" href="" title="Ana Tudor">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="match" href="mask-image-clip-exclude-ref.html">
+<meta name="fuzzy" content="maxDifference=0-1; totalPixels=0-1764">
+<title>mask-image + mask-clip + mask-composite: exclude on different background boxes</title>
+<style>
+div {
+ display: inline-block;
+ width: 100px;
+ height: 100px;
+ padding: 10px;
+ background: linear-gradient(green, green) border-box;
+ mask: linear-gradient(red, red) content-box exclude, linear-gradient(red, red);
+}
+</style>
+<div></div>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-data-url-image.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-data-url-image.html
new file mode 100644
index 0000000000..aac59f3c4a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-data-url-image.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>CSS Test: mask-image: url(data:...)</title>
+<link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#mask-layer-image">
+<link rel="match" href="reference/mask-image-data-url-image-ref.html">
+<meta name="assert" content="mask-image can use a data: URL as an image">
+<style>
+#back {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 60px solid green;
+ background: blue;
+}
+#front {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 40px solid blue;
+ background: green;
+ mask-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGDwAQAAUQBNt+pgmgAAAABJRU5ErkJggg==); /* 1x1 black with 30% transparency */
+}
+</style>
+<p>The test passes if there is a blue-ish square with a 20px green border around it and a 40px blue-green-ish border around that.</p>
+<div id="back"></div><div id="front"></div>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-ib-split-2.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-ib-split-2.html
new file mode 100644
index 0000000000..94c653a5c4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-ib-split-2.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Test: mask-image on a fragmented inline</title>
+<link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#mask-layer-image">
+<link rel="match" href="reference/mask-image-ib-split-2-ref.html">
+<meta name="assert" content="mask-image applies to all fragments">
+<style>
+ columns {
+ display: block;
+ columns: 5;
+ column-fill: auto;
+ column-gap: 10px;
+ height: 30px;
+ background: pink;
+ }
+ div { background: grey; height: 50px; }
+ x {
+ background: grey;
+ mask-image: url(data:image/png;base64,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);
+ }
+ .end { mask-position:100% 100%; mask-repeat: no-repeat; }
+</style>
+<body><columns><x><div></div></x></columns><columns><x class="end"><div></div></x></columns></body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-ib-split.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-ib-split.html
new file mode 100644
index 0000000000..dab941b111
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-ib-split.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<title>CSS Test: mask-image on an inline with a block inside split by a columnset</title>
+<link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#mask-layer-image">
+<link rel="match" href="reference/mask-image-ib-split-ref.html">
+<meta name="assert" content="mask-image applies to the block child">
+<style>
+ body { column-width: 40px; column-gap: 0; }
+ div { padding-inline-start: 40px; margin: 1em 0; border-bottom-style: solid; }
+ span { margin-inline-end: -2px; }
+ x { mask-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGDwAQAAUQBNt+pgmgAAAABJRU5ErkJggg==); }
+</style>
+<body><x><span></span><div></div></x></body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-svg-child-will-change.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-svg-child-will-change.html
new file mode 100644
index 0000000000..248589d54d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-svg-child-will-change.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Test: mask-image on svg with child with will-change: transform</title>
+<link rel="author" title="Xianzhu Wang" href="mailto:wangxianzhu@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#mask-layer-image">
+<link rel="match" href="reference/mask-image-svg-child-will-change-ref.html">
+<style>
+svg {
+ /* The image is 200x200 with 100x100 opaque pixels at the center */
+ -webkit-mask-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAABNklEQVR42u3TyQ0AMAgEMUj/PS895IWQ3QHHVAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP/6yiBJ4pyLHqv7xG89pwSBgEBAICAQEAgIBAQCAgGBAAIBgYBAQCAgEBAICAQEAgIBgQACAYGAQEAgIBAQCAgEBAICAQQCAgGBgEBAICAQEAgIBAQCAgEEAgIBgYBAQCAgEBAICAQEAggEBAICAYGAQEAgIBAQCAgEBAIIBAQCAgGBgEBAICAQEAgIBBAICAQEAgIBgYBAQCAgEBAICAQQCAgEBAICAYGAQEAgIBAQCAjECkAgIBAQCAgEBAICAYGAQEAggEBAICAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAthrrbgTIalbwsQAAAABJRU5ErkJggg==);
+ mask-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMgAAADICAYAAACtWK6eAAABNklEQVR42u3TyQ0AMAgEMUj/PS895IWQ3QHHVAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP/6yiBJ4pyLHqv7xG89pwSBgEBAICAQEAgIBAQCAgGBAAIBgYBAQCAgEBAICAQEAgIBgQACAYGAQEAgIBAQCAgEBAICAQQCAgGBgEBAICAQEAgIBAQCAgEEAgIBgYBAQCAgEBAICAQEAggEBAICAYGAQEAgIBAQCAgEBAIIBAQCAgGBgEBAICAQEAgIBBAICAQEAgIBgYBAQCAgEBAICAQQCAgEBAICAYGAQEAgIBAQCAjECkAgIBAQCAgEBAICAYGAQEAggEBAICAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAthrrbgTIalbwsQAAAABJRU5ErkJggg==);
+ width: 100px;
+ height: 100px;
+ border: 50px solid red;
+ background: green;
+}
+</style>
+<p>The test passes if there is a green square and no red below.</p>
+<svg>
+ <rect style="will-change: transform">
+</svg>
+
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-image-hash.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-image-hash.html
new file mode 100644
index 0000000000..b1efc90818
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-image-hash.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>CSS Test: mask-image: url(image.svg#hash)</title>
+<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
+<link rel="author" title="Mozilla" href="https://www.mozilla.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#mask-layer-image">
+<link rel="match" href="reference/mask-image-ref.html">
+<meta name="assert" content="mask-image can use an SVG file as an image with element reference">
+<style>
+#back {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 60px solid green;
+ background: red;
+}
+#front {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 40px solid red;
+ background: green;
+ mask-image: url(support/image-with-ref.svg#ref);
+}
+</style>
+<p>The test passes if there is a green square and no red below.</p>
+<div id="back"></div><div id="front"></div>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-image.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-image.html
new file mode 100644
index 0000000000..40a1ff9b28
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-image.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>CSS Test: mask-image: url(image.svg)</title>
+<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
+<link rel="author" title="Mozilla" href="https://www.mozilla.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#mask-layer-image">
+<link rel="match" href="reference/mask-image-ref.html">
+<meta name="assert" content="mask-image can use an SVG file as an image">
+<style>
+#back {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 60px solid green;
+ background: red;
+}
+#front {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 40px solid red;
+ background: green;
+ mask-image: url(support/image.svg);
+}
+</style>
+<p>The test passes if there is a green square and no red below.</p>
+<div id="back"></div><div id="front"></div>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-local-mask.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-local-mask.html
new file mode 100644
index 0000000000..18abc54f85
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-local-mask.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<title>CSS Test: mask-image: url(#local-mask)</title>
+<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
+<link rel="author" title="Mozilla" href="https://www.mozilla.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#mask-layer-image">
+<link rel="match" href="reference/mask-image-ref.html">
+<meta name="assert" content="mask-image can use local reference to a &lt;mask&gt; element">
+<style>
+#back {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 60px solid green;
+ background: red;
+}
+#front {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 40px solid red;
+ background: green;
+ mask-image: url(#localmask);
+}
+</style>
+<p>The test passes if there is a green square and no red below.</p>
+<div id="back"></div><div id="front"></div>
+<svg viewBox="0 0 200 200" style="width: 0; height: 0">
+ <mask id="localmask">
+ <rect x="50" y="50" width="100" height="100" fill="white">
+ </mask>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-remote-mask.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-remote-mask.html
new file mode 100644
index 0000000000..f3f2eefaa9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-image-url-remote-mask.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>CSS Test: mask-image: url(remote.svg#mask)</title>
+<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
+<link rel="author" title="Mozilla" href="https://www.mozilla.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#mask-layer-image">
+<link rel="match" href="reference/mask-image-ref.html">
+<meta name="assert" content="mask-image can use reference to a &lt;mask&gt; element from a remote SVG document">
+<style>
+#back {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 60px solid green;
+ background: red;
+}
+#front {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 40px solid red;
+ background: green;
+ mask-image: url(support/mask.svg#mask);
+}
+</style>
+<p>The test passes if there is a green square and no red below.</p>
+<div id="back"></div><div id="front"></div>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-a.html
new file mode 100644
index 0000000000..38977a0aad
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-a.html
@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-mode with vector image</title>
+ <link rel="author" title="Ethan Lin" href="mailto:ethlin@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#propdef-mask-mode">
+ <link rel="match" href="mask-mode-ref.html">
+ <meta name="assert" content="Test checks that mask an SVG image referenced by mask-image is correct with different mask mode.">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.auto {
+ left: 10px;
+ mask-mode: match-source;
+ mask-image: url(support/blue-100x100.svg);
+ }
+
+ div.alpha {
+ left: 120px;
+ mask-mode: alpha;
+ mask-image: url(support/blue-100x100.svg);
+ }
+
+ div.luminance1 {
+ left: 230px;
+ mask-mode: luminance;
+ mask-image: url(support/blue-100x100.svg);
+ }
+
+ div.luminance2 {
+ left: 340px;
+ mask-mode: luminance;
+ mask-image: url(support/red-100x100.svg);
+ }
+
+ div.luminance3 {
+ left: 450px;
+ mask-mode: luminance;
+ mask-image: url(support/green-100x100.svg);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="auto"></div>
+ <div class="alpha"></div>
+ <div class="luminance1"></div>
+ <div class="luminance2"></div>
+ <div class="luminance3"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-b.html
new file mode 100644
index 0000000000..e5c11e9bf0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-b.html
@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-mode with raster image</title>
+ <link rel="author" title="Ethan Lin" href="mailto:ethlin@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#propdef-mask-mode">
+ <link rel="match" href="mask-mode-ref.html">
+ <meta name="assert" content="Test checks that mask a PNG image referenced by mask-image is correct with different mask mode.">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.auto {
+ left: 10px;
+ mask-mode: match-source;
+ mask-image: url(support/blue-100x100.png);
+ }
+
+ div.alpha {
+ left: 120px;
+ mask-mode: alpha;
+ mask-image: url(support/blue-100x100.png);
+ }
+
+ div.luminance1 {
+ left: 230px;
+ mask-mode: luminance;
+ mask-image: url(support/blue-100x100.png);
+ }
+
+ div.luminance2 {
+ left: 340px;
+ mask-mode: luminance;
+ mask-image: url(support/red-100x100.png);
+ }
+
+ div.luminance3 {
+ left: 450px;
+ mask-mode: luminance;
+ mask-image: url(support/green-100x100.png);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="auto"></div>
+ <div class="alpha"></div>
+ <div class="luminance1"></div>
+ <div class="luminance2"></div>
+ <div class="luminance3"></div>
+ </body>
+</html>
+
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-c.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-c.html
new file mode 100644
index 0000000000..1d7eeba2aa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-c.html
@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-mode with raster image</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#propdef-mask-mode">
+ <link rel="match" href="mask-mode-ref.html">
+ <meta name="assert" content="Test checks that mask a PNG image referenced by mask-image is correct with different mask mode.">
+ <meta name="fuzzy" content="maxDifference=0-2; totalPixels=0-11800">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.auto {
+ left: 10px;
+ mask-mode: match-source;
+ mask-image: linear-gradient(blue 0%, blue 100%);
+ }
+
+ div.alpha {
+ left: 120px;
+ mask-mode: alpha;
+ mask-image: linear-gradient(blue 0%, blue 100%);
+ }
+
+ div.luminance1 {
+ left: 230px;
+ mask-mode: luminance;
+ mask-image: linear-gradient(blue 0%, blue 100%);
+ }
+
+ div.luminance2 {
+ left: 340px;
+ mask-mode: luminance;
+ mask-image: linear-gradient(red 0%, red 100%);
+ }
+
+ div.luminance3 {
+ left: 450px;
+ mask-mode: luminance;
+ mask-image: linear-gradient(lime 0%, lime 100%);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="auto"></div>
+ <div class="alpha"></div>
+ <div class="luminance1"></div>
+ <div class="luminance2"></div>
+ <div class="luminance3"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-d.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-d.html
new file mode 100644
index 0000000000..f36f032f52
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-d.html
@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-mode with raster image</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#propdef-mask-mode">
+ <link rel="match" href="mask-mode-ref.html">
+ <meta name="assert" content="Test checks that whether mask-mode is filled automatically according to the number of mask layers.">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.auto {
+ left: 10px;
+ mask-mode: match-source;
+ mask-image: linear-gradient(black 0%, black 100%), linear-gradient(blue 0%, blue 100%);
+ }
+
+ div.alpha {
+ left: 120px;
+ mask-mode: alpha alpha;
+ mask-image: linear-gradient(black 0%, black 100%), linear-gradient(blue 0%, blue 100%);
+ }
+
+ div.luminance1 {
+ left: 230px;
+ mask-mode: luminance;
+ mask-image: linear-gradient(black 0%, black 100%), linear-gradient(blue 0%, blue 100%);
+ }
+
+ div.luminance2 {
+ left: 340px;
+ mask-mode: luminance;
+ mask-image: linear-gradient(black 0%, black 100%), linear-gradient(red 0%, red 100%);
+ }
+
+ div.luminance3 {
+ left: 450px;
+ mask-mode: luminance;
+ mask-image: linear-gradient(black 0%, black 100%), linear-gradient(lime 0%, lime 100%);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="auto"></div>
+ <div class="alpha"></div>
+ <div class="luminance1"></div>
+ <div class="luminance2"></div>
+ <div class="luminance3"></div>
+ </body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-ref.html
new file mode 100644
index 0000000000..0f7dbd571f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-ref.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS mask-mode reference</title>
+ <link rel="author" title="Ethan Lin" href="mailto:ethlin@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ background-color: white;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.auto {
+ left: 10px;
+ background-image: url(support/blue-100x100.svg);
+ }
+
+ div.alpha {
+ left: 120px;
+ background-image: url(support/blue-100x100.svg);
+ }
+
+ div.luminance1 {
+ left: 230px;
+ background-image: url(support/blue-luminance-100x100.svg);
+ }
+
+ div.luminance2 {
+ left: 340px;
+ background-image: url(support/red-luminance-100x100.svg);
+ }
+
+ div.luminance3 {
+ left: 450px;
+ background-image: url(support/green-luminance-100x100.svg);
+ }
+ </style>
+ </head>
+ <body>
+ <div class="auto"></div>
+ <div class="alpha"></div>
+ <div class="luminance1"></div>
+ <div class="luminance2"></div>
+ <div class="luminance3"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-to-mask-type-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-to-mask-type-ref.html
new file mode 100644
index 0000000000..2b5e1fd3e7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-to-mask-type-ref.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS mask-mode reference</title>
+ <link rel="author" title="Ethan Lin" href="mailto:ethlin@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.match-luminance {
+ left: 10px;
+ background-image: url(support/blue-luminance-100x100.svg);
+ }
+
+ div.match-alpha {
+ left: 120px;
+ background-image: url(support/blue-100x100.svg);
+ }
+
+ div.luminance-luminance {
+ top: 120px;
+ left: 10px;
+ background-image: url(support/blue-luminance-100x100.svg);
+ }
+
+ div.luminance-alpha {
+ top: 120px;
+ left: 120px;
+ background-image: url(support/blue-luminance-100x100.svg);
+ }
+
+ div.alpha-luminance {
+ top: 230px;
+ left: 10px;
+ background-image: url(support/blue-100x100.svg);
+ }
+
+ div.alpha-alpha {
+ top: 230px;
+ left: 120px;
+ background-image: url(support/blue-100x100.svg);
+ }
+ </style>
+
+ </head>
+ <body>
+ <div class="match-luminance"></div>
+ <div class="match-alpha"></div>
+ <div class="luminance-luminance"></div>
+ <div class="luminance-alpha"></div>
+ <div class="alpha-luminance"></div>
+ <div class="alpha-alpha"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-to-mask-type.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-to-mask-type.html
new file mode 100644
index 0000000000..5c75ce71d3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-mode-to-mask-type.html
@@ -0,0 +1,89 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-mode with vector image</title>
+ <link rel="author" title="Ethan Lin" href="mailto:ethlin@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#propdef-mask-mode">
+ <link rel="match" href="mask-mode-to-mask-type-ref.html">
+ <meta name="assert" content="Test checks the fallback logic between mask-mode and mask-type.">
+ <style type="text/css">
+ div {
+ background-color: blue;
+ position: absolute;
+ margin: 0px;
+ padding: 0px;
+ width: 100px;
+ height: 100px;
+ top: 10px;
+ }
+
+ div.match-luminance {
+ left: 10px;
+ mask-mode: match-source;
+ mask-image: url("#svg-luminance");
+ }
+
+ div.match-alpha {
+ left: 120px;
+ mask-mode: match-source;
+ mask-image: url("#svg-alpha");
+ }
+
+ div.luminance-luminance {
+ top: 120px;
+ left: 10px;
+ mask-mode: luminance;
+ mask-image: url("#svg-luminance");
+ }
+
+ div.luminance-alpha {
+ top: 120px;
+ left: 120px;
+ mask-mode: luminance;
+ mask-image: url("#svg-alpha");
+ }
+
+ div.alpha-luminance {
+ top: 230px;
+ left: 10px;
+ mask-mode: alpha;
+ mask-image: url("#svg-luminance");
+ }
+
+ div.alpha-alpha {
+ top: 230px;
+ left: 120px;
+ mask-mode: alpha;
+ mask-image: url("#svg-alpha");
+ }
+
+ #svg-luminance {
+ mask-type: luminance;
+ }
+
+ #svg-alpha {
+ mask-type: alpha;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="match-luminance"></div>
+ <div class="match-alpha"></div>
+ <div class="luminance-luminance"></div>
+ <div class="luminance-alpha"></div>
+ <div class="alpha-luminance"></div>
+ <div class="alpha-alpha"></div>
+ <svg xmlns="http://www.w3.org/2000/svg">
+ <defs>
+ <mask id="svg-luminance">
+ <rect x="0" y="0" width="100%" height="100%" fill="blue"/>
+ </mask>
+ <mask id="svg-alpha">
+ <rect x="0" y="0" width="100%" height="100%" fill="blue"/>
+ </mask>
+ </defs>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1-ref.html
new file mode 100644
index 0000000000..5def84f067
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1-ref.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask with opacity</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ position: absolute;
+ left: 10px;
+ top: 60px;
+ background-color: rgba(0,0,255,0.5);
+ width: 100px;
+ height: 50px;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1a.html
new file mode 100644
index 0000000000..9182371794
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1a.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask with filter and opacity</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-opacity-1-ref.html">
+ <meta name="assert" content="Test checks whether apply opacity to masked element correctly or not.">
+ <meta name="fuzzy" content="maxDifference=1; totalPixels=0-5000">
+ <style type="text/css">
+ div {
+ position: absolute;
+ left: 10px;
+ top: 10px;
+ background-color: rgb(255,255,0);
+ width: 100px;
+ height: 100px;
+ filter: invert(100%);
+ mask-image: url(support/blue-100x50-transparent-100x50.png);
+ opacity: 0.5;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1b.html
new file mode 100644
index 0000000000..681ec360ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1b.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask with opacity</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-opacity-1-ref.html">
+ <meta name="assert" content="Test checks whether apply opacity to masked element correctly or not.">
+ <meta name="fuzzy" content="maxDifference=1; totalPixels=0-5000">
+ <svg height="0">
+ <mask id="myMask" x="0" y="0" width="100" height="100" >
+ <rect x="0" y="0" width="50" height="50" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ position: absolute;
+ left: 10px;
+ top: 10px;
+ background-color: rgb(0,0,255);
+ width: 100px;
+ height: 100px;
+ mask-image: url(support/blue-100x50-transparent-100x50.png);
+ opacity: 0.5;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1c.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1c.html
new file mode 100644
index 0000000000..271e663e63
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1c.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: filter with opacity</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-opacity-1-ref.html">
+ <meta name="assert" content="Test checks whether apply opacity to masked element correctly or not.">
+ <meta name="fuzzy" content="maxDifference=1; totalPixels=0-5000">
+ <style type="text/css">
+ div {
+ position: absolute;
+ left: 10px;
+ top: 60px;
+ background-color: rgb(255,255,0);
+ width: 100px;
+ height: 50px;
+ filter: invert(100%);
+ opacity: 0.5;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1d.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1d.html
new file mode 100644
index 0000000000..6f50b8f6f5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1d.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask with opacity</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-opacity-1-ref.html">
+ <meta name="assert" content="Test checks whether apply opacity to masked element correctly or not.">
+ <svg height="0">
+ <mask id="myMask" x="0" y="0" width="100" height="100" >
+ <rect x="0" y="50" width="100" height="50" style="stroke:none; fill: #ffffff"/>
+ </mask>
+ </svg>
+ <style type="text/css">
+ div {
+ position: absolute;
+ left: 10px;
+ top: 10px;
+ background-color: rgb(0,0,255);
+ width: 100px;
+ height: 100px;
+ mask-image: url(#myMask), url(#myMask);
+ opacity: 0.5;
+ }
+ </style>
+ </head>
+ <body>
+ <div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1e.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1e.html
new file mode 100644
index 0000000000..ad7aa8829e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-opacity-1e.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-image: mask with opacity</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
+ <link rel="match" href="mask-opacity-1-ref.html">
+ <meta name="assert" content="Test checks whether apply opacity to masked element correctly or not.">
+ <style type="text/css">
+ #outter {
+ position: absolute;
+ left: 10px;
+ top: 10px;
+ width: 100px;
+ height: 100px;
+ mask-image: url(support/blue-100x50-transparent-100x50.png),
+ url(support/blue-100x50-transparent-100x50.png);
+ opacity: 0.5;
+ }
+
+ #inner {
+ width: 100px;
+ height: 100px;
+ box-sizing:border-box;
+ background-color: blue;
+ border: 1px solid transparent;
+ will-change: transform;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outter"><div id="inner"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-1-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-1-ref.html
new file mode 100644
index 0000000000..df7e684d2a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-1-ref.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-origin: mask positioning area</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div.outer {
+ border: 1px solid black;
+ width: 100px;
+ height: 100px;
+ position: relative;
+ }
+
+ div.inner {
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ position: absolute;
+ }
+
+ #border { left: 4px; top: 1px; }
+ #padding { left: 10px; top: 9px; }
+ #content { left: 13px; top: 15px; }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner" id="border"></div></div>
+ <div class="outer"><div class="inner" id="border"></div></div>
+ <div class="outer"><div class="inner" id="padding"></div></div>
+ <div class="outer"><div class="inner" id="content"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-1.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-1.html
new file mode 100644
index 0000000000..3788a5591a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-1.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-origin: mask positioning area</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-origin">
+ <link rel="match" href="mask-origin-1-ref.html">
+ <meta name="assert" content="Test checks whether setting mask position area works correctly or not.">
+ <style type="text/css">
+ div.outer {
+ border: 1px solid black;
+ width: 100px;
+ height: 100px;
+ }
+
+ div.inner {
+ /*
+ * content box: 60 x 60
+ * padding box: 72 x 78
+ * border box: 80 x 90
+ * margin box: 86 x 94
+ */
+ margin: 1px 2px 3px 4px;
+ border: solid transparent;
+ border-width: 8px 2px 4px 6px;
+ padding: 6px 9px 12px 3px;
+ width: 60px;
+ height: 60px;
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ }
+
+ #border { mask-origin: border-box; }
+ #padding { mask-origin: padding-box; }
+ #content { mask-origin: content-box; }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner"></div></div>
+ <div class="outer"><div class="inner" id="border"></div></div>
+ <div class="outer"><div class="inner" id="padding"></div></div>
+ <div class="outer"><div class="inner" id="content"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-2-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-2-ref.html
new file mode 100644
index 0000000000..bbb5ef2c41
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-2-ref.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-origin: mask positioning area</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div.outer {
+ border: 1px solid black;
+ width: 125px;
+ height: 125px;
+ position: relative;
+ }
+
+ div.inner {
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ position: absolute;
+ }
+
+ #pos-left-auto { left: 0px; top: 22px; }
+ #pos-left-bottom { left: 0px; top: 44px; }
+ #pos-right-top { left: 36px; top: 0px; }
+ #pos-right-bottom { left: 36px; top: 44px; }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner" id="pos-left-auto"></div></div>
+ <div class="outer"><div class="inner" id="pos-left-bottom"></div></div>
+ <div class="outer"><div class="inner" id="pos-right-top"></div></div>
+ <div class="outer"><div class="inner" id="pos-right-bottom"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-2.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-2.html
new file mode 100644
index 0000000000..90ee89b15d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-2.html
@@ -0,0 +1,77 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-origin: mask positioning area</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-origin">
+ <link rel="match" href="mask-origin-2-ref.html">
+ <meta name="assert" content="Test checks whether setting mask origin to margin-box works correctly or not.">
+ <style type="text/css">
+ div.outer {
+ border: 1px solid black;
+ width: 125px;
+ height: 125px;
+ }
+
+ div.inner {
+ /*
+ * content box: 60 x 60
+ * padding box: 72 x 78
+ * border box: 80 x 90
+ * margin box: 86 x 94
+ */
+ margin: 1px 2px 3px 4px;
+ border: solid red;
+ border-width: 8px 2px 4px 6px;
+ padding: 6px 9px 12px 3px;
+ width: 60px;
+ height: 60px;
+ position: relative;
+ background-color: blue;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-origin: margin-box;
+ }
+
+ div.overflow {
+ position: absolute;
+ left: -10px;
+ top: -9px;
+ border: solid transparent;
+ border-width: 15px 13px 19px 13px;
+ width: 60px;
+ height: 60px;
+ background-color: purple;
+ }
+
+ #pos-left-auto { mask-position: left; }
+ #pos-left-bottom { mask-position: left bottom; }
+ #pos-right-top { mask-position: right top; }
+ #pos-right-bottom { mask-position: right bottom; }
+ </style>
+ </head>
+ <body>
+ <div class="outer">
+ <div class="inner" id="pos-left-auto">
+ <div class="overflow"></div>
+ </div>
+ </div>
+ <div class="outer">
+ <div class="inner" id="pos-left-bottom">
+ <div class="overflow"></div>
+ </div>
+ </div>
+ <div class="outer">
+ <div class="inner" id="pos-right-top">
+ <div class="overflow"></div>
+ </div>
+ </div>
+ <div class="outer">
+ <div class="inner" id="pos-right-bottom">
+ <div class="overflow"></div>
+ </div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-3-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-3-ref.html
new file mode 100644
index 0000000000..0271998a29
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-3-ref.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-origin: mask positioning area</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ svg {
+ position: absolute;
+ top: 10px;
+ border: 1px solid black;
+ }
+ </style>
+ </head>
+ <body>
+ <svg width="200" height="200" style="left: 10px;">
+ <rect x="50" y="50" width="50" height="50" fill="blue"/>
+ </svg>
+ <svg width="200" height="200" style="left: 240px;">
+ <rect x="50" y="50" width="50" height="50" fill="green"/>
+ <rect x="60" y="60" width="40" height="40" fill="blue"/>
+ </svg>
+ <svg width="200" height="200" style="left: 10px; top: 220px;">
+ <rect x="60" y="40" width="50" height="50" fill="green"/>
+ <rect x="80" y="60" width="30" height="30" fill="blue"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-3.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-3.html
new file mode 100644
index 0000000000..eade316b3d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-origin-3.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-origin: mask positioning area</title>
+ <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-origin">
+ <link rel="match" href="mask-origin-3-ref.html">
+ <meta name="assert" content="Test checks whether setting mask position area works correctly or not.">
+ <style type="text/css">
+ svg {
+ position: absolute;
+ top: 10px;
+ border: 1px solid black;
+ }
+ rect.mask {
+ fill: blue;
+ mask-origin: fill-box;
+ mask-clip: fill-box;
+ mask-repeat: no-repeat;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ }
+
+ rect.view {
+ mask-origin: view-box;
+ mask-clip: view-box;
+ }
+
+ rect.fill {
+ mask-origin: fill-box;
+ mask-clip: stroke-box;
+ }
+
+ rect.stroke {
+ mask-origin: stroke-box;
+ mask-clip: stroke-box;
+ }
+ </style>
+ </head>
+ <body>
+ <svg width="200" height="200" viewBox="100 100 100 100" preserveAspectRatio="none" style="left: 10px;">
+ <rect class="view mask" x="125" y="125" width="100" height="100"/>
+ </svg>
+ <svg width="200" height="200" style="left: 240px;">
+ <rect class="fill mask" x="50" y="50" width="80" height="80" stroke="green" stroke-width="20"/>
+ </svg>
+ <svg width="200" height="200" style="left: 10px; top: 220px;">
+ <rect class="stroke mask" x="70" y="50" width="80" height="80" stroke="green" stroke-width="20"/>
+ </svg>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1-ref.html
new file mode 100644
index 0000000000..e323bd3529
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1-ref.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: position mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div.outer {
+ position: relative;
+ width: 100px;
+ height: 100px;
+ border: 1px solid black;
+ }
+
+ div.inner {
+ position: absolute;
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ }
+
+ #inner1 { right: 10px; bottom: 35px; }
+ #inner2 { right: 30px; bottom: 25px; }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner" id="inner1"></div></div>
+ <div class="outer"><div class="inner" id="inner1"></div></div>
+ <div class="outer"><div class="inner" id="inner2"></div></div>
+ <div class="outer"><div class="inner" id="inner2"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1a.html
new file mode 100644
index 0000000000..cee15ee713
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1a.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-1-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ div.outer {
+ border: 1px solid black;
+ }
+
+ div.inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+
+ #inner1 { mask-position: right 20% bottom 70%; }
+ #inner2 { mask-position: bottom 70% right 20%; }
+ #inner3 { mask-position: right 30px bottom 25px; }
+ #inner4 { mask-position: bottom 25px right 30px; }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner" id="inner1"></div></div>
+ <div class="outer"><div class="inner" id="inner2"></div></div>
+ <div class="outer"><div class="inner" id="inner3"></div></div>
+ <div class="outer"><div class="inner" id="inner4"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1b.html
new file mode 100644
index 0000000000..669810e61a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1b.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-1-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ div.outer {
+ border: 1px solid black;
+ }
+
+ div.inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+
+ #inner1 { mask-position: left 40px top 15px; }
+ #inner2 { mask-position: top 30% left 80%; }
+ #inner3 { mask-position: left 20px top 25px }
+ #inner4 { mask-position: top 25px left 20px; }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner" id="inner1"></div></div>
+ <div class="outer"><div class="inner" id="inner2"></div></div>
+ <div class="outer"><div class="inner" id="inner3"></div></div>
+ <div class="outer"><div class="inner" id="inner4"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1c.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1c.html
new file mode 100644
index 0000000000..9a1671c3d4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-1c.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-1-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ div.outer {
+ border: 1px solid black;
+ }
+
+ div.inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+
+ #inner1 { mask-position: left 80% bottom 70%; }
+ #inner2 { mask-position: right 20% top 30%; }
+ #inner3 { mask-position: bottom 50% left 40%; }
+ #inner4 { mask-position: right 60% top 50%; }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner" id="inner1"></div></div>
+ <div class="outer"><div class="inner" id="inner2"></div></div>
+ <div class="outer"><div class="inner" id="inner3"></div></div>
+ <div class="outer"><div class="inner" id="inner4"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-2-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-2-ref.html
new file mode 100644
index 0000000000..46be4b8b08
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-2-ref.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: position mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 100px;
+ height: 100px;
+ }
+
+ #inner {
+ margin-left: 20px;
+ margin-top: 20px;
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-2a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-2a.html
new file mode 100644
index 0000000000..d8427338d4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-2a.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-2-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-position: left 40% bottom 60%;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-2b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-2b.html
new file mode 100644
index 0000000000..b5f7b31051
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-2b.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-2-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-position: 40% 40%;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-3-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-3-ref.html
new file mode 100644
index 0000000000..dd2630356e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-3-ref.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: position mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 100px;
+ height: 100px;
+ }
+
+ #inner {
+ margin-left: 25px;
+ margin-top: 10px;
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-3a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-3a.html
new file mode 100644
index 0000000000..17b1137f62
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-3a.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-3-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-position: left 50% bottom 80%;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-3b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-3b.html
new file mode 100644
index 0000000000..742a65ea15
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-3b.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-3-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-position: center 20%;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4-ref.html
new file mode 100644
index 0000000000..7ddf68b28a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4-ref.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: position mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 100px;
+ height: 100px;
+ }
+
+ #inner {
+ margin-left: 0px;
+ margin-top: 25px;
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4a.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4a.html
new file mode 100644
index 0000000000..9d17692e83
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4a.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-4-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-position: left center;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4b.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4b.html
new file mode 100644
index 0000000000..9b46546d31
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4b.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-4-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-position: left;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4c.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4c.html
new file mode 100644
index 0000000000..7437c0232b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4c.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-4-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-position: left 0% bottom 50%;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4d.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4d.html
new file mode 100644
index 0000000000..e5dce03b4a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-4d.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-4-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask: url(support/50x50-opaque-blue.svg) left no-repeat;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-5-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-5-ref.html
new file mode 100644
index 0000000000..dc8c9ecb93
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-5-ref.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: position mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 120px;
+ height: 120px;
+ }
+
+ #inner1 {
+ margin-left: 35px;
+ margin-top: 0px;
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ }
+
+ #inner2 {
+ margin-left: 35px;
+ margin-top: 20px;
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner1"></div>
+ <div id="inner2"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-5.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-5.html
new file mode 100644
index 0000000000..295402263d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-5.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-5-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 120px;
+ height: 120px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-position: top, bottom;
+ mask-repeat: no-repeat, no-repeat;
+ mask-image: url(support/50x50-opaque-blue.svg),
+ url(support/50x50-opaque-blue.svg);
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-6-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-6-ref.html
new file mode 100644
index 0000000000..b94527eb0a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-6-ref.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: position mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ .outer {
+ border: 1px solid black;
+ width: 100px;
+ height: 100px;
+ }
+
+ .inner {
+ margin-left: 20px;
+ margin-top: 50px;
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner"></div></div>
+ <div class="outer"><div class="inner"></div></div>
+ <div class="outer"><div class="inner"></div></div>
+ <div class="outer"><div class="inner"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-6.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-6.html
new file mode 100644
index 0000000000..e4b0715c4d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-6.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-6-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ .outer {
+ border: 1px solid black;
+ }
+
+ .outer > div {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+
+ #inner1 {
+ mask-position: left 20px bottom 0px;
+ }
+
+ #inner2 {
+ mask-position: left 40% bottom 0%;
+ }
+
+ #inner3 {
+ mask-position: right 60% bottom 0%;
+ }
+
+ #inner4 {
+ mask-position: right 30px bottom 0px;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div id="inner1"></div></div>
+ <div class="outer"><div id="inner2"></div></div>
+ <div class="outer"><div id="inner3"></div></div>
+ <div class="outer"><div id="inner4"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-7-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-7-ref.html
new file mode 100644
index 0000000000..c3c8d85ebd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-7-ref.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: position mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ .outer {
+ border: 1px solid black;
+ width: 100px;
+ height: 100px;
+ }
+
+ .inner {
+ margin-left: 50px;
+ margin-top: 20px;
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner"></div></div>
+ <div class="outer"><div class="inner"></div></div>
+ <div class="outer"><div class="inner"></div></div>
+ <div class="outer"><div class="inner"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-position-7.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-7.html
new file mode 100644
index 0000000000..d24fca5bc2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-position-7.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-position: mask positioning</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+ <link rel="match" href="mask-position-7-ref.html">
+ <meta name="assert" content="Test checks whether positioning mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 100px;
+ height: 100px;
+ }
+
+ .outer {
+ border: 1px solid black;
+ }
+
+ .outer > div {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ }
+
+ #inner1 {
+ mask-position: right 0% top 40%;
+ }
+
+ #inner2 {
+ mask-position: right 0px top 20px;
+ }
+
+ #inner3 {
+ mask-position: right 0% bottom 60%;
+ }
+
+ #inner4 {
+ mask-position: right 0px bottom 30px;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div id="inner1"></div></div>
+ <div class="outer"><div id="inner2"></div></div>
+ <div class="outer"><div id="inner3"></div></div>
+ <div class="outer"><div id="inner4"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-1-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-1-ref.html
new file mode 100644
index 0000000000..01ed86d127
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-1-ref.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-repeat: repeated mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div.outer {
+ width: 128px;
+ height: 128px;
+ position: relative;
+ border: 1px solid black;
+ }
+
+ .color {
+ background-color: purple;
+ }
+
+ #default {
+ position: absolute;
+ width: 50px; height: 50px;
+ }
+
+ #repeat-x {
+ position: absolute;
+ width: 100%; height: 50px;
+ }
+
+ #repeat-y {
+ position: absolute;
+ width: 50px; height: 100%;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outer color"></div>
+ <div class="outer">
+ <div class="color" id="default"></div>
+ </div>
+ <div class="outer color"></div>
+ <div class="outer">
+ <div class="color" id="repeat-x"></div>
+ </div>
+ <div class="outer">
+ <div class="color" id="repeat-y"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-1.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-1.html
new file mode 100644
index 0000000000..a7fc586fd5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-1.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-repeat: repeated mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-repeat">
+ <link rel="match" href="mask-repeat-1-ref.html">
+ <meta name="assert" content="Test checks whether repeated mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 128px;
+ height: 128px;
+ }
+
+ div.outer {
+ border: 1px solid black;
+ }
+
+ div.inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-position: left top;
+ }
+
+ #no-repeat {
+ mask-repeat: no-repeat no-repeat;
+ }
+ #repeat {
+ mask-repeat: repeat repeat;
+ }
+ #repeat-x {
+ mask-repeat: repeat no-repeat;
+ }
+ #repeat-y {
+ mask-repeat: no-repeat repeat;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner"></div></div>
+ <div class="outer"><div class="inner" id="no-repeat"></div></div>
+ <div class="outer"><div class="inner" id="repeat"></div></div>
+ <div class="outer"><div class="inner" id="repeat-x"></div></div>
+ <div class="outer"><div class="inner" id="repeat-y"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-2-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-2-ref.html
new file mode 100644
index 0000000000..fa386cdac1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-2-ref.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-repeat: repeated mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div.outer {
+ width: 128px;
+ height: 128px;
+ position: relative;
+ border: 1px solid black;
+ }
+
+ div.inner {
+ width: 50px;
+ height: 50px;
+ position: absolute;
+ background-color: purple;
+ }
+
+ #pos-top-left { left: 0; top: 0; }
+ #pos-top-right { right: 0; top: 0; }
+ #pos-bottom-left { left: 0; bottom: 0; }
+ #pos-bottom-right { right: 0; bottom: 0; }
+ </style>
+ </head>
+ <body>
+ <div class="outer">
+ <div class="inner" id="pos-top-left"></div>
+ <div class="inner" id="pos-top-right"></div>
+ <div class="inner" id="pos-bottom-left"></div>
+ <div class="inner" id="pos-bottom-right"></div>
+ </div>
+ <div class="outer">
+ <div class="inner" id="pos-top-left"></div>
+ <div class="inner" id="pos-top-right"></div>
+ </div>
+ <div class="outer">
+ <div class="inner" id="pos-top-left"></div>
+ <div class="inner" id="pos-bottom-left"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-2.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-2.html
new file mode 100644
index 0000000000..e349239fbf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-2.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-repeat: repeated mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-repeat">
+ <link rel="match" href="mask-repeat-2-ref.html">
+ <meta name="assert" content="Test checks whether repeated mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 128px;
+ height: 128px;
+ }
+
+ div.outer {
+ border: 1px solid black;
+ }
+
+ div.inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-position: left top;
+ }
+
+ #space {
+ mask-repeat: space;
+ }
+ #space-x {
+ mask-repeat: space no-repeat;
+ }
+ #space-y {
+ mask-repeat: no-repeat space;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner" id="space"></div></div>
+ <div class="outer"><div class="inner" id="space-x"></div></div>
+ <div class="outer"><div class="inner" id="space-y"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-3-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-3-ref.html
new file mode 100644
index 0000000000..4d4b869ce9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-3-ref.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-repeat: repeated mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div.outer {
+ width: 150px;
+ height: 150px;
+ border: 1px solid black;
+ }
+
+ .color {
+ background-color: purple;
+ }
+
+ #round {
+ width: 150px;
+ height: 150px;
+ }
+
+ #round-x {
+ width: 150px;
+ height: 50px;
+ }
+
+ #round-y {
+ width: 50px;
+ height: 150px;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="color" id="round"></div></div>
+ <div class="outer"><div class="color" id="round-x"></div></div>
+ <div class="outer"><div class="color" id="round-y"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-3.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-3.html
new file mode 100644
index 0000000000..cb950d4f2c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-repeat-3.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-repeat: repeated mask layer image</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-repeat">
+ <link rel="match" href="mask-repeat-3-ref.html">
+ <meta name="assert" content="Test checks whether repeated mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 150px;
+ height: 150px;
+ }
+
+ div.outer {
+ border: 1px solid black;
+ }
+
+ div.inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-position: left top;
+ }
+
+ #round {
+ mask-repeat: round;
+ }
+ #round-x {
+ mask-repeat: round no-repeat;
+ }
+ #round-y {
+ mask-repeat: no-repeat round;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="outer"><div class="inner" id="round"></div></div>
+ <div class="outer"><div class="inner" id="round-x"></div></div>
+ <div class="outer"><div class="inner" id="round-y"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-auto.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-auto.html
new file mode 100644
index 0000000000..01d55f9629
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-auto.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-auto-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: auto auto;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-length-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-length-ref.html
new file mode 100644
index 0000000000..aa21231924
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-length-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ width: 20px;
+ height: 20px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-length.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-length.html
new file mode 100644
index 0000000000..5ef49cc612
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-length.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-auto-length-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ width: 64px;
+ height: 128px;
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: auto 20px;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-percent.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-percent.html
new file mode 100644
index 0000000000..f2644bb1b0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-percent.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-auto-length-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ width: 64px;
+ height: 128px;
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: auto 15.625%;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-ref.html
new file mode 100644
index 0000000000..73e3df2703
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ width: 50px;
+ height: 50px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto.html
new file mode 100644
index 0000000000..6560a81ee3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-auto.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-auto-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: auto;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-border-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-border-ref.html
new file mode 100644
index 0000000000..afbeb72f10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-border-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ width: 64px;
+ height: 64px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-border.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-border.html
new file mode 100644
index 0000000000..a04557639a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-border.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-contain-clip-border-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ border: 20px solid transparent;
+ width: 24px;
+ height: 88px;
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-clip: border-box;
+ mask-origin: border-box;
+ mask-size: contain;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-padding-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-padding-ref.html
new file mode 100644
index 0000000000..041e48d03d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-padding-ref.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ border: 20px solid white;
+ width: 24px;
+ height: 88px;
+ }
+
+ #innermost {
+ width: 24px;
+ height: 24px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner">
+ <div id="innermost"></div>
+ </div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-padding.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-padding.html
new file mode 100644
index 0000000000..4f321d9c58
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-clip-padding.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-contain-clip-padding-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ background-color: purple;
+ border: 20px solid transparent;
+ width: 24px;
+ height: 88px;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-clip: padding-box;
+ mask-origin: padding-box;
+ mask-size: contain;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer"><div id="inner"></div></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-position-fifty-fifty-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-position-fifty-fifty-ref.html
new file mode 100644
index 0000000000..50ab373eb8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-position-fifty-fifty-ref.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner1 {
+ width: 64px;
+ height: 32px;
+ }
+
+ #inner2 {
+ width: 64px;
+ height: 64px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner1"></div>
+ <div id="inner2"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-position-fifty-fifty.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-position-fifty-fifty.html
new file mode 100644
index 0000000000..fcae5ba0ed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-position-fifty-fifty.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-contain-position-fifty-fifty-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: contain;
+ mask-position: 50% 50%;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-ref.html
new file mode 100644
index 0000000000..a7346bfcb2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 10px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ width: 64px;
+ height: 64px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain.html
new file mode 100644
index 0000000000..19fc42d6ec
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-contain.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-contain-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 10px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: contain;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-cover-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-cover-ref.html
new file mode 100644
index 0000000000..961019bf16
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-cover-ref.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 10px solid transparent;
+ width: 64px;
+ height: 128px;
+ background-clip: content-box;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-cover.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-cover.html
new file mode 100644
index 0000000000..171e11805b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-cover.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-cover-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ #outer {
+ border: 10px solid black;
+ width: 64px;
+ height: 128px;
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-origin: content-box;
+ mask-clip: content-box;
+ mask-size: cover;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer"></div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-auto.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-auto.html
new file mode 100644
index 0000000000..7152f6ff95
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-auto.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-length-length-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x100-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: 32px auto;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-length-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-length-ref.html
new file mode 100644
index 0000000000..5411da9f87
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-length-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ width: 32px;
+ height: 64px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-length.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-length.html
new file mode 100644
index 0000000000..f9cf2cb6bc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-length.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-length-length-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x100-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: 32px 64px;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-percent-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-percent-ref.html
new file mode 100644
index 0000000000..26195541d1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-percent-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ width: 16px;
+ height: 32px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-percent.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-percent.html
new file mode 100644
index 0000000000..ba5bbbc55c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length-percent.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-length-percent-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x100-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: 16px 25%;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length.html
new file mode 100644
index 0000000000..961357e12f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-length.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-length-length-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x100-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: 32px;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-auto.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-auto.html
new file mode 100644
index 0000000000..603346d6e6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-auto.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-percent-percent-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: 50% auto;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-length.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-length.html
new file mode 100644
index 0000000000..4ac9c8e81f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-length.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-percent-percent-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: 50% 32px;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent-ref.html
new file mode 100644
index 0000000000..96a3d1bdca
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ #outer {
+ border: 1px solid black;
+ width: 64px;
+ height: 128px;
+ }
+
+ #inner {
+ width: 32px;
+ height: 32px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent-stretch-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent-stretch-ref.html
new file mode 100644
index 0000000000..2c023ec13c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent-stretch-ref.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <style type="text/css">
+ div {
+ width: 60px;
+ height: 120px;
+ }
+
+ #outer {
+ border: 10px solid black;
+ }
+
+ #inner {
+ height: 60px;
+ background-color: purple;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent-stretch.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent-stretch.html
new file mode 100644
index 0000000000..69f89b8a98
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent-stretch.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-percent-percent-stretch-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 60px;
+ height: 120px;
+ }
+
+ #outer {
+ border: 10px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/transparent-100x50-blue-100x50.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: 100% 100%;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent.html
new file mode 100644
index 0000000000..7b04d9b6d5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent-percent.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-percent-percent-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: 50% 25%;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent.html b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent.html
new file mode 100644
index 0000000000..2e056df521
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/mask-size-percent.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>CSS Masking: mask-size: mask layer size</title>
+ <link rel="author" title="Astley Chen" href="mailto:aschen@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org">
+ <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-size">
+ <link rel="match" href="mask-size-percent-percent-ref.html">
+ <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
+ <style type="text/css">
+ div {
+ width: 64px;
+ height: 128px;
+ }
+
+ #outer {
+ border: 1px solid black;
+ }
+
+ #inner {
+ background-color: purple;
+ mask-image: url(support/50x50-opaque-blue.svg);
+ mask-repeat: no-repeat;
+ mask-position: left top;
+ mask-size: 50%;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="outer">
+ <div id="inner"></div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/reference/1x1-black-30-alpha.png b/testing/web-platform/tests/css/css-masking/mask-image/reference/1x1-black-30-alpha.png
new file mode 100644
index 0000000000..e334f44a03
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/reference/1x1-black-30-alpha.png
Binary files differ
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-data-url-image-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-data-url-image-ref.html
new file mode 100644
index 0000000000..c2e88b3657
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-data-url-image-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>Reference: mask-image: url(data:...)</title>
+<link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+<style>
+#back {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 60px solid green;
+ background: blue;
+}
+#front {
+ position: absolute;
+ box-sizing: border-box;
+ width: 200px;
+ height: 200px;
+ border: 40px solid blue;
+ background: green;
+ mask-image: url(1x1-black-30-alpha.png); /* 1x1 black with 30% transparency */
+}
+</style>
+<p>The test passes if there is a blue-ish square with a 20px green border around it and a 40px blue-green-ish border around that.</p>
+<div id="back"></div><div id="front"></div>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-ib-split-2-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-ib-split-2-ref.html
new file mode 100644
index 0000000000..ee28190878
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-ib-split-2-ref.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Test: mask-image on a fragmented inline</title>
+<link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+<style>
+ columns {
+ display: block;
+ columns: 5;
+ column-fill: auto;
+ column-gap: 10px;
+ height: 30px;
+ background: pink;
+ }
+ div { background: grey; height: 50px; }
+ x {
+ background: grey;
+ mask-image: url(data:image/png;base64,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);
+ }
+ .end { mask-position:100% 100%; mask-repeat: no-repeat; }
+</style>
+<body><columns><x style="display:block"><div></div></x></columns><columns><x style="display:block; background: grey; height: 50px;" class="end"></x></columns></body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-ib-split-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-ib-split-ref.html
new file mode 100644
index 0000000000..e5c09f9449
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-ib-split-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<title>CSS Reference: mask-image on an inline with a block inside split by a columnset</title>
+<link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+<style>
+ body { column-width: 40px; column-gap: 0; }
+ div { padding-inline-start: 40px; margin: 1em 0; border-bottom-style: solid; }
+ span { margin-inline-end: -2px; }
+ div { mask-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGDwAQAAUQBNt+pgmgAAAABJRU5ErkJggg==); }
+</style>
+<body><x><span></span><div></div></x></body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-ref.html
new file mode 100644
index 0000000000..4e121163f9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<title>CSS Reference: mask-image</title>
+<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
+<link rel="author" title="Mozilla" href="https://www.mozilla.org">
+<style>
+#ref {
+ position: absolute;
+ width: 200px;
+ height: 200px;
+ background: green;
+}
+</style>
+<p>The test passes if there is a green square and no red below.</p>
+<div id="ref"></div>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-svg-child-will-change-ref.html b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-svg-child-will-change-ref.html
new file mode 100644
index 0000000000..722879303d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/reference/mask-image-svg-child-will-change-ref.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<p>The test passes if there is a green square and no red below.</p>
+<div style="width: 100px; height: 100px; background: green; position: relative; top: 50px; left: 50px"></div>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/50x100-opaque-blue.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/50x100-opaque-blue.svg
new file mode 100644
index 0000000000..c9a82b4939
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/50x100-opaque-blue.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<svg width="50" height="100" xmlns="http://www.w3.org/2000/svg">
+ <rect x="0" y="0" width="50" height="100" fill="blue" fill-opacity="1"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/50x50-opaque-blue.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/50x50-opaque-blue.svg
new file mode 100644
index 0000000000..a68a1fa5b5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/50x50-opaque-blue.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<svg width="50" height="50" xmlns="http://www.w3.org/2000/svg">
+ <rect x="0" y="0" width="50" height="50" fill="blue" fill-opacity="1"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x100.png b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x100.png
new file mode 100644
index 0000000000..3b72d5ce53
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x100.png
Binary files differ
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x100.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x100.svg
new file mode 100644
index 0000000000..38cae60fc0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x100.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg">
+ <rect x="0" y="0" width="100%" height="100%" fill="blue" fill-opacity="1"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x50-transparent-100x50.png b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x50-transparent-100x50.png
new file mode 100644
index 0000000000..65b1e88a56
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x50-transparent-100x50.png
Binary files differ
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x50-transparent-100x50.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x50-transparent-100x50.svg
new file mode 100644
index 0000000000..459f21d5cf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-100x50-transparent-100x50.svg
@@ -0,0 +1,5 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
+ <rect x="0" y="0" width="100%" height="50%" fill="blue" fill-opacity="0"/>
+ <rect x="0" y="50%" width="100%" height="50%" fill="blue" fill-opacity="1"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/blue-luminance-100x100.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-luminance-100x100.svg
new file mode 100644
index 0000000000..5b79155b66
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/blue-luminance-100x100.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg">
+ <rect x="0" y="0" width="100%" height="100%" fill="RGB(238,238,255)" fill-opacity="1"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/green-100x100.png b/testing/web-platform/tests/css/css-masking/mask-image/support/green-100x100.png
new file mode 100644
index 0000000000..d65838b7f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/green-100x100.png
Binary files differ
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/green-100x100.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/green-100x100.svg
new file mode 100644
index 0000000000..87fd691a01
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/green-100x100.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg">
+ <rect x="0" y="0" width="100%" height="100%" fill="lime" fill-opacity="1"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/green-luminance-100x100.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/green-luminance-100x100.svg
new file mode 100644
index 0000000000..795bd7e5c9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/green-luminance-100x100.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg">
+ <rect x="0" y="0" width="100%" height="100%" fill="RGB(73,73,255)" fill-opacity="1"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/image-with-ref.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/image-with-ref.svg
new file mode 100644
index 0000000000..fe77fb37ac
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/image-with-ref.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200">
+ <style>
+ g { display: none; }
+ g:target { display: inline; }
+ </style>
+ <g id="ref">
+ <rect x="50" y="50" width="100" height="100" fill="black"/>
+ </g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/image.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/image.svg
new file mode 100644
index 0000000000..28dbaa0238
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/image.svg
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200">
+ <rect x="50" y="50" width="100" height="100" fill="black"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/mask-half-transparent-100x100.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/mask-half-transparent-100x100.svg
new file mode 100644
index 0000000000..78f6993552
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/mask-half-transparent-100x100.svg
@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
+ <defs>
+ <mask id="mask" mask-type="alpha">
+ <rect x="0" y="0" width="100" height="50" fill-opacity="1"/>
+ <rect x="0" y="50" width="100" height="50" fill-opacity="0"/>
+ </mask>
+ </defs>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/mask.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/mask.svg
new file mode 100644
index 0000000000..cab55923d3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/mask.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200">
+ <mask id="mask">
+ <rect x="50" y="50" width="100" height="100" fill="white"/>
+ </mask>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/red-100x100.png b/testing/web-platform/tests/css/css-masking/mask-image/support/red-100x100.png
new file mode 100644
index 0000000000..43b8e542a9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/red-100x100.png
Binary files differ
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/red-100x100.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/red-100x100.svg
new file mode 100644
index 0000000000..0ba285bf00
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/red-100x100.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg">
+ <rect x="0" y="0" width="100%" height="100%" fill="red" fill-opacity="1"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/red-luminance-100x100.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/red-luminance-100x100.svg
new file mode 100644
index 0000000000..05075f5210
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/red-luminance-100x100.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg">
+ <rect x="0" y="0" width="100%" height="100%" fill="RGB(201,201,255)" fill-opacity="1"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/transparent-100x50-blue-100x50.png b/testing/web-platform/tests/css/css-masking/mask-image/support/transparent-100x50-blue-100x50.png
new file mode 100644
index 0000000000..f451746654
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/transparent-100x50-blue-100x50.png
Binary files differ
diff --git a/testing/web-platform/tests/css/css-masking/mask-image/support/transparent-100x50-blue-100x50.svg b/testing/web-platform/tests/css/css-masking/mask-image/support/transparent-100x50-blue-100x50.svg
new file mode 100644
index 0000000000..658aed9f1e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-image/support/transparent-100x50-blue-100x50.svg
@@ -0,0 +1,5 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
+ <rect x="0" y="0" width="100%" height="50%" fill="blue" fill-opacity="1"/>
+ <rect x="0" y="50%" width="100%" height="50%" fill="blue" fill-opacity="0"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-empty-container-with-filter.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-empty-container-with-filter.svg
new file mode 100644
index 0000000000..ebe7e7e4d1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-empty-container-with-filter.svg
@@ -0,0 +1,23 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml">
+ <title>mask with only an empty container with a filter</title>
+ <h:link rel="help" href="https://drafts.fxtf.org/css-masking-1/#svg-masks"/>
+ <h:link rel="match" href="reference/mask-green-square-001-ref.svg"/>
+
+ <filter id="double" x="0" y="0" width="200" height="200" filterUnits="userSpaceOnUse">
+ <feOffset dy="100"/>
+ <feMerge>
+ <feMergeNode/>
+ <feMergeNode in="SourceGraphic"/>
+ </feMerge>
+ </filter>
+ <filter id="f" x="0" y="0" width="200" height="200" filterUnits="userSpaceOnUse">
+ <feFlood flood-color="#fff"/>
+ </filter>
+ <mask id="m" x="50" y="50" width="100" height="100" maskUnits="userSpaceOnUse">
+ <g filter="url(#f)"/>
+ </mask>
+
+ <rect width="100" height="200" fill="green" mask="url(#m)"/>
+ <rect width="100" height="100" x="100" fill="green" mask="url(#m)"
+ filter="url(#double)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-negative-scale.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-negative-scale.svg
new file mode 100644
index 0000000000..36b7abb42e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-negative-scale.svg
@@ -0,0 +1,40 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="testmeta">
+ <title>CSS Masking: mask with negative scale target</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-negative-scale-001-ref.svg"/>
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The masked target elements get scaled with negative
+ factors. Check if that influences masking. You should see 4 green
+ rectangles with smaller blue rectangles in it in various rotations.</desc>
+</g>
+<defs>
+<g id="img" transform="translate(10,10)">
+ <rect width="200" height="200" fill="red"/>
+ <rect width="100" height="100" fill="green"/>
+ <rect width="50" height="50" fill="blue"/>
+</g>
+</defs>
+
+<mask id="mask">
+ <rect x="10" y="10" width="90" height="90" fill="white"/>
+</mask>
+
+<g transform="translate(200, 200)">
+<g transform="matrix(1 0 0 1 -100 -100)" mask="url(#mask)">
+ <use xlink:href="#img"/>
+</g>
+<g transform="matrix(-1 0 0 -1 -100 -100)" mask="url(#mask)">
+ <use xlink:href="#img"/>
+</g>
+<g transform="matrix(-1 0 0 1 -100 -100)" mask="url(#mask)">
+ <use xlink:href="#img"/>
+</g>
+<g transform="matrix(1 0 0 -1 -100 -100)" mask="url(#mask)">
+ <use xlink:href="#img"/>
+</g>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-text-001.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-text-001.svg
new file mode 100644
index 0000000000..1dd5c546af
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-text-001.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ xmlns:xlink="http://www.w3.org/1999/xlink" width="100px" height="100px">
+<g id="testmeta">
+ <title>CSS Masking: mask with transformed text content</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-text-001-ref.svg"/>
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The masked target elements get scaled with negative
+ factors. Check if that influences masking. You should see 4 green
+ rectangles with smaller blue rectangles in it in various rotations.</desc>
+</g>
+<mask id="mask">
+ <text fill="#fff" font-family="Ahem" font-size="12px" transform="rotate(90 50 50)" x="50%" y="50%">foobar</text>
+</mask>
+<rect width="100%" height="100%" x="0" y="0" mask="url(#mask)"/>
+</svg> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-type-001.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-type-001.svg
new file mode 100644
index 0000000000..9bcc40d55b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-type-001.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: mask without mask-type alpha</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-type"/>
+ <html:link rel="match" href="reference/mask-green-square-001-ref.svg"/>
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The mask type "alpha" is applied to the mask element.
+ The mask should take the alpha channel of the content to mask. You should
+ see a green square.</desc>
+</g>
+<mask id="mask" mask-type="alpha">
+ <rect width="200" height="200" fill="black" opacity="0"/>
+ <rect x="50" y="50" width="100" height="100" fill="black"/>
+</mask>
+<rect width="200" height="200" fill="green" mask="url(#mask)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-type-002.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-type-002.svg
new file mode 100644
index 0000000000..c298297329
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-type-002.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: mask without mask-type luminance</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-type"/>
+ <html:link rel="match" href="reference/mask-green-square-001-ref.svg"/>
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">The mask type "alpha" is applied to the mask element.
+ The mask should take the luminocity of the content to mask. You should
+ see a green square.</desc>
+</g>
+<mask id="mask" mask-type="luminance">
+ <rect width="200" height="200" fill="black"/>
+ <rect x="50" y="50" width="100" height="100" fill="white"/>
+</mask>
+<rect width="200" height="200" fill="green" mask="url(#mask)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-type-003.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-type-003.svg
new file mode 100644
index 0000000000..891405dc46
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-type-003.svg
@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: mask without specified mask-type</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#the-mask-type"/>
+ <html:link rel="match" href="reference/mask-green-square-001-ref.svg"/>
+ <metadata class="flags">svg</metadata>
+ <desc class="assert">No mask type was specified the mask element should
+ take the luminocity of the content to mask. You should see a green square.
+ </desc>
+</g>
+<mask id="mask">
+ <rect width="200" height="200" fill="black"/>
+ <rect x="50" y="50" width="100" height="100" fill="white"/>
+</mask>
+<rect width="200" height="200" fill="green" mask="url(#mask)"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-with-rotation.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-with-rotation.svg
new file mode 100644
index 0000000000..9964fd524a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/mask-with-rotation.svg
@@ -0,0 +1,16 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: mask with rotation transform</title>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#svg-masks"/>
+ <html:link rel="help" href="http://www.w3.org/TR/css-masking-1/#MaskElement"/>
+ <html:link rel="match" href="reference/mask-green-square-001-ref.svg"/>
+ <metadata class="flags">svg</metadata>
+</g>
+<mask id="mask">
+ <rect x="50" y="50" width="100" height="100" fill="white"/>
+</mask>
+<g transform="rotate(0.0001)" mask="url(#mask)">
+ <rect transform="rotate(0.0001)" style="will-change: transform"
+ width="200" height="200" fill="green"/>
+</g>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/reference/mask-green-square-001-ref.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/reference/mask-green-square-001-ref.svg
new file mode 100644
index 0000000000..c83ec87e7b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/reference/mask-green-square-001-ref.svg
@@ -0,0 +1,8 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <metadata class="flags">svg</metadata>
+</g>
+<rect x="50" y="50" width="100" height="100" fill="green"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/reference/mask-negative-scale-001-ref.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/reference/mask-negative-scale-001-ref.svg
new file mode 100644
index 0000000000..1ed0513327
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/reference/mask-negative-scale-001-ref.svg
@@ -0,0 +1,15 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <metadata class="flags">svg</metadata>
+</g>
+<rect width="90" height="90" fill="green"/>
+<rect x="40" y="40" width="50" height="50" fill="blue"/>
+<rect x="110" width="90" height="90" fill="green"/>
+<rect x="110" y="40" width="50" height="50" fill="blue"/>
+<rect y="110" width="90" height="90" fill="green"/>
+<rect x="40" y="110" width="50" height="50" fill="blue"/>
+<rect x="110" y="110" width="90" height="90" fill="green"/>
+<rect x="110" y="110" width="50" height="50" fill="blue"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/mask-svg-content/reference/mask-text-001-ref.svg b/testing/web-platform/tests/css/css-masking/mask-svg-content/reference/mask-text-001-ref.svg
new file mode 100644
index 0000000000..3fabeb01d7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/mask-svg-content/reference/mask-text-001-ref.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:html="http://www.w3.org/1999/xhtml"
+ width="100px" height="100px">
+<g id="testmeta">
+ <title>CSS Masking: Reftest reference</title>
+ <html:link rel="author" title="Dirk Schulze" href="mailto:dschulze@adobe.com"/>
+ <metadata class="flags">svg</metadata>
+</g>
+<text fill="#000" font-family="Ahem" font-size="12px" transform="rotate(90 50 50)" x="50" y="50">foobar</text>
+</svg>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-computed.html b/testing/web-platform/tests/css/css-masking/parsing/clip-computed.html
new file mode 100644
index 0000000000..a1a8ce1cb2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-computed.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: getComputedStyle().clip</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#clip-property">
+<meta name="assert" content="clip computed value is as specified, with lengths made absolute.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+ #target {
+ font-size: 40px;
+ }
+</style>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("clip", "auto");
+test_computed_value("clip", "rect(10px, 20px, -30px, 40px)");
+test_computed_value("clip", "rect(10px, 20px, calc(-1em + 10px), 1em)", "rect(10px, 20px, -30px, 40px)");
+test_computed_value("clip", "rect(10px, -20px, auto, auto)");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-invalid.html b/testing/web-platform/tests/css/css-masking/parsing/clip-invalid.html
new file mode 100644
index 0000000000..d8b3868903
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-invalid.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing clip with invalid values</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#clip-property">
+<meta name="assert" content="clip supports only the grammar 'rect() | auto'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("clip", "none");
+test_invalid_value("clip", "rect(10px, 20px, 30px)");
+test_invalid_value("clip", "rect(10%, -20%, auto, auto)");
+test_invalid_value("clip", "rect(10px 20px, 30px 40px)");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-path-computed.html b/testing/web-platform/tests/css/css-masking/parsing/clip-path-computed.html
new file mode 100644
index 0000000000..00a75cdefa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-path-computed.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Shapes Module Level 1: getComputedStyle().shapeOutside</title>
+<link rel="help" href="https://drafts.csswg.org/css-shapes/#clip-path-property">
+<meta name="assert" content="clip-path computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<style>
+ #target {
+ font-size: 40px;
+ }
+</style>
+<div id="target"></div>
+<script>
+test_computed_value("clip-path", "circle(calc(10px + 0.5em) at -50% 50%)", "circle(30px at -50% 50%)");
+test_computed_value("clip-path", "circle(calc(10px - 0.5em) at 50% -50%)", "circle(0px at 50% -50%)");
+test_computed_value("clip-path", "ellipse(at 50% 50%)");
+test_computed_value("clip-path", "ellipse(60% closest-side at 50% 50%)");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-path-invalid.html b/testing/web-platform/tests/css/css-masking/parsing/clip-path-invalid.html
new file mode 100644
index 0000000000..6b91f74ad4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-path-invalid.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing clip-path with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<meta name="assert" content="clip-path supports only the grammar '<clip-source> | [ <basic-shape> || <geometry-box> ] | none'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("clip-path", "auto");
+test_invalid_value("clip-path", "ray(0deg)");
+
+test_invalid_value("clip-path", "inset()");
+test_invalid_value("clip-path", "inset(123)");
+test_invalid_value("clip-path", "inset(1% 2% 3% 4% 5%)");
+test_invalid_value("clip-path", "inset(round 0)");
+test_invalid_value("clip-path", "inset(0px round)");
+test_invalid_value("clip-path", "inset(0px round 123)");
+test_invalid_value("clip-path", "inset(0px round 1% 2% 3% 4% 5%)");
+test_invalid_value("clip-path", "inset(0px round / 1px)");
+test_invalid_value("clip-path", "inset(10px round -20px)");
+test_invalid_value("clip-path", "inset(30% round -40%)");
+
+test_invalid_value("clip-path", "circle(123)");
+test_invalid_value("clip-path", "circle(at)");
+test_invalid_value("clip-path", "circle(10% 20%)");
+test_invalid_value("clip-path", "circle(-10px at 20px 30px)");
+test_invalid_value("clip-path", "circle(-10% at 20% 30%)");
+test_invalid_value("clip-path", "circle(1% 2% at 0% 100%)");
+
+test_invalid_value("clip-path", "ellipse(farthest-side at)");
+test_invalid_value("clip-path", "ellipse(1% 2% top right)");
+test_invalid_value("clip-path", "ellipse(3%)");
+test_invalid_value("clip-path", "ellipse(3% at 100% 0%)");
+test_invalid_value("clip-path", "ellipse(closest-side)");
+test_invalid_value("clip-path", "ellipse(farthest-side at 100% 0%)");
+test_invalid_value("clip-path", "ellipse(10% -20% at 30% 40%)");
+test_invalid_value("clip-path", "ellipse(-50px 60px at 70% 80%)");
+
+test_invalid_value("clip-path", "polygon(1%)");
+
+test_invalid_value("clip-path", "unknown-box");
+
+test_invalid_value("clip-path", 'path(abc, "m 20 0 h -100 z")');
+test_invalid_value("clip-path", 'path(nonzero)');
+test_invalid_value("clip-path", 'path("m 20 0 h -100", nonzero)');
+
+
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-path-shape-parsing.html b/testing/web-platform/tests/css/css-masking/parsing/clip-path-shape-parsing.html
new file mode 100644
index 0000000000..5e8eb8e117
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-path-shape-parsing.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<link rel="help" href="https://drafts.csswg.org/css-shapes-2/#shape-function">
+<meta name="assert" content="clip-path supports the full shape() grammar.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// basic
+test_valid_value("clip-path", "shape(from 0px 0px, line to 10px 10px)");
+test_valid_value("clip-path", "shape(evenodd from 0px 0px, line to 10px 10px)");
+test_valid_value("clip-path", "shape(nonzero from 0px 0px, line to 10px 10px)", "shape(from 0px 0px, line to 10px 10px)");
+test_valid_value("clip-path", "shape( from 0px 0px, line to 10px 10px )", "shape(from 0px 0px, line to 10px 10px)");
+test_valid_value("clip-path", "shape(from 1em 50%, line to 10px 10px)");
+test_valid_value("clip-path", "shape(EvenOdd from 0px 0Px, CLOSE)", "shape(evenodd from 0px 0px, close)");
+test_valid_value("clip-path", "shape(from 1ch 50px, line to 10rem 10vh)");
+test_valid_value("clip-path", "shape(from 1ch -50px, line to -10% 12px)");
+
+// segment types
+test_valid_value("clip-path", "shape(from 10px 10px, move by 10px 5px, line by 20px 40%, close)");
+test_valid_value("clip-path", "shape(from 10px 10px, hline by 10px, vline to 5rem)");
+test_valid_value("clip-path", "shape(from 10px 10px, vline by 5%, hline to 1vw)");
+test_valid_value("clip-path", "shape(from 10px 10px, curve to 50px 20px via 10rem 1%)");
+test_valid_value("clip-path", "shape(from 10px 10px, curve to 50px 20px via 10rem 1px 20vh 1ch)");
+test_valid_value("clip-path", "shape(from 10px 10px, curve by 50px 20px via 10rem 1px 20vh 1ch)");
+test_valid_value("clip-path", "shape(from 10px 10px, smooth to 50px 20px via 10rem 1%)");
+test_valid_value("clip-path", "shape(from 10px 10px, smooth to 50px 1pt)");
+test_valid_value("clip-path", "shape(from 10px 10px, arc to 50px 1pt of 10px 10px)", "shape(from 10px 10px, arc to 50px 1pt of 10px)");
+test_valid_value("clip-path", "shape(from 10px 10px, arc to 50px 1pt of 10px 10px small rotate 0deg)", "shape(from 10px 10px, arc to 50px 1pt of 10px)");
+test_valid_value("clip-path", "shape(from 10% 1rem, arc to 50px 1pt of 20% cw large rotate 25deg)", "shape(from 10% 1rem, arc to 50px 1pt of 20% cw large rotate 25deg)");
+test_valid_value("clip-path", "shape(evenodd from 0px 0px, close)");
+
+// nonsense
+test_invalid_value("clip-path", "shape(evenodd from 0px 0px, close path)");
+test_invalid_value("clip-path", "shape(nonzero, from 0px 0px, line to 10px 10px)");
+test_invalid_value("clip-path", "shape(from 10px 10px, curve to 50px 20px via 10rem)");
+test_invalid_value("clip-path", "shape(from 10px 10px, curve to 50px 20px via 10rem 1% 12px)");
+test_invalid_value("clip-path", "shape(from 10px 10px, hline byy 10px, vline to 5rem)");
+test_invalid_value("clip-path", "shape(from 10px 10px, vline by 5% hline by 1vw");
+test_invalid_value("clip-path", "shape(from 10px 10px, smooth to 50px 20px via 10rem)");
+test_invalid_value("clip-path", "shape(from 10px 10px, smooth to 50px 20px via 10rem 2px 2pt)");
+test_invalid_value("clip-path", "shape()");
+test_invalid_value("clip-path", "shape(from)");
+test_invalid_value("clip-path", "shape(from 0px)");
+test_invalid_value("clip-path", "shape(from 0px 20px,)");
+test_invalid_value("clip-path", "shape(close)");
+test_invalid_value("clip-path", "shape(nonzero, close)");
+test_invalid_value("clip-path", "shape(from 0px 10px)");
+test_invalid_value("clip-path", "shape(allkindsofnonsense)");
+test_invalid_value("clip-path", "shape(arc)");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-path-valid.html b/testing/web-platform/tests/css/css-masking/parsing/clip-path-valid.html
new file mode 100644
index 0000000000..ec6ac5ae9b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-path-valid.html
@@ -0,0 +1,77 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing clip-path with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-path">
+<meta name="assert" content="clip-path supports the full grammar '<clip-source> | [ <basic-shape> || <geometry-box> ] | none'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("clip-path", "none");
+
+// <basic-shape>
+test_valid_value("clip-path", "inset(100%)");
+test_valid_value("clip-path", "inset(0 1px)", "inset(0px 1px)");
+test_valid_value("clip-path", "inset(0px 1px 2%)");
+test_valid_value("clip-path", "inset(0px 1px 2% 3em)");
+test_valid_value("clip-path", "inset(0px round 100%)");
+test_valid_value("clip-path", "inset(0px round 0 1px)", "inset(0px round 0px 1px)");
+test_valid_value("clip-path", "inset(0px round 0px 1px 2%)");
+test_valid_value("clip-path", "inset(0px round 0px 1px 2% 3em)");
+test_valid_value("clip-path", "inset(10px round 20% / 0px 1px 2% 3em)");
+
+test_valid_value("clip-path", "circle()", "circle(at 50% 50%)");
+test_valid_value("clip-path", "circle(1px)", "circle(1px at 50% 50%)");
+test_valid_value("clip-path", "circle(closest-side)", "circle(at 50% 50%)");
+test_valid_value("clip-path", "circle(at 10% 20%)");
+test_valid_value("clip-path", "circle(farthest-side at center top)", "circle(farthest-side at 50% 0%)");
+test_valid_value("clip-path", "circle(4% at top right)", "circle(4% at 100% 0%)");
+
+test_valid_value("clip-path", "ellipse()", "ellipse(at 50% 50%)");
+test_valid_value("clip-path", "ellipse(1px closest-side)", "ellipse(1px closest-side at 50% 50%)");
+test_valid_value("clip-path", "ellipse(at 10% 20%)");
+test_valid_value("clip-path", "ellipse(closest-side closest-side at 10% 20%)", "ellipse(at 10% 20%)");
+test_valid_value("clip-path", "ellipse(farthest-side 4% at bottom left)", "ellipse(farthest-side 4% at 0% 100%)");
+
+test_valid_value("clip-path", "polygon(1% 2%)");
+test_valid_value("clip-path", "polygon(nonzero, 1px 2px, 3em 4em)", "polygon(1px 2px, 3em 4em)");
+test_valid_value("clip-path", "polygon(evenodd, 1px 2px, 3em 4em, 5pt 6%)");
+
+// New supported shape in [css-shapes-2]
+// https://drafts.csswg.org/css-shapes-2/#supported-basic-shapes
+test_valid_value("clip-path", 'path("m 20 0 h -100")');
+test_valid_value("clip-path", 'path(evenodd, "M 20 20 h 60 v 60 h -60 Z M 30 30 h 40 v 40 h -40 Z")');
+test_valid_value("clip-path",
+ 'path(nonzero, "M20,20h60 v60 h-60z M30,30 h40 v40 h-40z")',
+ 'path("M 20 20 h 60 v 60 h -60 Z M 30 30 h 40 v 40 h -40 Z")');
+// See https://github.com/w3c/fxtf-drafts/issues/392. If empty path string,
+// Blink serializes it as none, but Gecko serializes as path("").
+test_valid_value("clip-path", 'path(" ")', ["none", 'path("")']);
+test_valid_value("clip-path", 'path(evenodd, "")', ["none", 'path(evenodd, "")']);
+
+// <geometry-box>
+test_valid_value("clip-path", "border-box");
+test_valid_value("clip-path", "padding-box");
+test_valid_value("clip-path", "content-box");
+test_valid_value("clip-path", "margin-box");
+test_valid_value("clip-path", "fill-box");
+test_valid_value("clip-path", "stroke-box");
+test_valid_value("clip-path", "view-box");
+
+// basic-shape> <geometry-box>
+test_valid_value("clip-path", "circle(7% at 8% 9%) border-box");
+
+// <geometry-box> basic-shape>
+test_valid_value("clip-path", "border-box circle(7% at 8% 9%)");
+
+// <clip-source>
+test_valid_value("clip-path", "url(https://example.com/)", ["url(https://example.com/)", "url(\"https://example.com/\")"]);
+test_valid_value("clip-path", "url(\"https://example.com/\")", ["url(https://example.com/)", "url(\"https://example.com/\")"]);
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-rule-computed.html b/testing/web-platform/tests/css/css-masking/parsing/clip-rule-computed.html
new file mode 100644
index 0000000000..533b7dc0f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-rule-computed.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: getComputedStyle().clipRule</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-rule">
+<meta name="assert" content="clip-rule computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("clip-rule", "nonzero");
+test_computed_value("clip-rule", "evenodd");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-rule-invalid.html b/testing/web-platform/tests/css/css-masking/parsing/clip-rule-invalid.html
new file mode 100644
index 0000000000..4f4883e8a0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-rule-invalid.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing clip-rule with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-rule">
+<meta name="assert" content="clip-rule supports only the grammar 'nonzero | evenodd'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("clip-rule", "auto");
+test_invalid_value("clip-rule", "1");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-rule-valid.html b/testing/web-platform/tests/css/css-masking/parsing/clip-rule-valid.html
new file mode 100644
index 0000000000..fe94f8f6c5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-rule-valid.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing clip-rule with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-clip-rule">
+<meta name="assert" content="clip-rule supports the full grammar 'nonzero | evenodd'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("clip-rule", "nonzero");
+test_valid_value("clip-rule", "evenodd");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/clip-valid.html b/testing/web-platform/tests/css/css-masking/parsing/clip-valid.html
new file mode 100644
index 0000000000..d60802b897
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/clip-valid.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing clip with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#clip-property">
+<meta name="assert" content="clip supports the full grammar 'rect() | auto'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("clip", "auto");
+test_valid_value("clip", "rect(10px, 20px, -30px, 40px)");
+test_valid_value("clip", "rect(10px, -20px, auto, auto)");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/mask-invalid.html b/testing/web-platform/tests/css/css-masking/parsing/mask-invalid.html
new file mode 100644
index 0000000000..367049cf19
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/mask-invalid.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing mask with invalid values</title>
+<link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask">
+<meta name="assert" content="mask supports only the '<mask-layer>#' grammar.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value('mask', 'none linear-gradient(to 0% 0%, rgb(0, 0, 0), rgb(0, 0, 255))');
+test_invalid_value('mask', 'none alpha luminance');
+test_invalid_value('mask', 'linear-gradient(to 0% 0%, rgb(0, 0, 0), rgb(0, 0, 255)) url("https://example.com/")');
+
+test_invalid_value('mask', '1px 2px 3px');
+test_invalid_value('mask', '1px 2px 3px 4px');
+test_invalid_value('mask', '1px 2px / contain / cover');
+
+test_invalid_value('mask', 'repeat-y repeat-x');
+
+test_invalid_value('mask', 'stroke-box no-clip view-box');
+
+test_invalid_value('mask', 'border-box view-box padding-box');
+
+test_invalid_value('mask', 'no-clip border-box content-box');
+
+test_invalid_value('mask', 'content-box stroke-box no-clip');
+
+test_invalid_value('mask', 'add intersect');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/mask-position-invalid.html b/testing/web-platform/tests/css/css-masking/parsing/mask-position-invalid.html
new file mode 100644
index 0000000000..c246a1e795
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/mask-position-invalid.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing mask-position with invalid values</title>
+<link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+<meta name="assert" content="mask-position supports only the '<position>#' grammar.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("mask-position", "auto");
+test_invalid_value("mask-position", "1px 2px 3px");
+test_invalid_value("mask-position", "left right");
+test_invalid_value("mask-position", "bottom 10%");
+test_invalid_value("mask-position", "bottom 10% top 20%");
+
+test_invalid_value("mask-position", "center left 1px");
+test_invalid_value("mask-position", "center top 2px");
+test_invalid_value("mask-position", "right 3% center");
+test_invalid_value("mask-position", "left 4px top");
+test_invalid_value("mask-position", "right top 5px");
+test_invalid_value("mask-position", "bottom 6% center");
+test_invalid_value("mask-position", "bottom 7% left");
+test_invalid_value("mask-position", "bottom right 8%");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/mask-position-valid.html b/testing/web-platform/tests/css/css-masking/parsing/mask-position-valid.html
new file mode 100644
index 0000000000..f2d2c4a8d1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/mask-position-valid.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing mask-position with valid values</title>
+<link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-position">
+<meta name="assert" content="mask-position supports the full '<position>#' grammar.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("mask-position", "10%");
+test_valid_value("mask-position", "right 30% top 60px");
+test_valid_value("mask-position", "-20% -30px");
+test_valid_value("mask-position", "30px center", "30px");
+test_valid_value("mask-position", "40px top");
+test_valid_value("mask-position", "bottom 10% right 20%", "right 20% bottom 10%");
+test_valid_value("mask-position", "bottom right", "right bottom");
+test_valid_value("mask-position", "center 50px");
+test_valid_value("mask-position", "center bottom", "bottom");
+test_valid_value("mask-position", "center left", "left");
+test_valid_value("mask-position", "left");
+test_valid_value("mask-position", "left bottom");
+test_valid_value("mask-position", "right 40%");
+test_valid_value("mask-position", "top");
+test_valid_value("mask-position", "top center", "top");
+test_valid_value("mask-position", "center", "center");
+
+test_valid_value("mask-position", "bottom left, right 20%", "left bottom, right 20%");
+test_valid_value("mask-position", "top, center, left");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/mask-type-computed.html b/testing/web-platform/tests/css/css-masking/parsing/mask-type-computed.html
new file mode 100644
index 0000000000..0fd02c8b4f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/mask-type-computed.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: getComputedStyle().maskType</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-type">
+<meta name="assert" content="mask-type computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("mask-type", "luminance");
+test_computed_value("mask-type", "alpha");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/mask-type-invalid.html b/testing/web-platform/tests/css/css-masking/parsing/mask-type-invalid.html
new file mode 100644
index 0000000000..56451d2879
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/mask-type-invalid.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing mask-type with invalid values</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-type">
+<meta name="assert" content="mask-type supports only the grammar 'luminance | alpha'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("mask-type", "auto");
+test_invalid_value("mask-type", "luminance alpha");
+test_invalid_value("mask-type", "alpha, luminance");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/mask-type-valid.html b/testing/web-platform/tests/css/css-masking/parsing/mask-type-valid.html
new file mode 100644
index 0000000000..31a528381a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/mask-type-valid.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing mask-type with valid values</title>
+<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-type">
+<meta name="assert" content="mask-type supports the full grammar 'luminance | alpha'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("mask-type", "luminance");
+test_valid_value("mask-type", "alpha");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-masking/parsing/mask-valid.sub.html b/testing/web-platform/tests/css/css-masking/parsing/mask-valid.sub.html
new file mode 100644
index 0000000000..c6e2c28af5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-masking/parsing/mask-valid.sub.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masking Module Level 1: parsing mask with valid values</title>
+<link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask">
+<meta name="assert" content="mask supports the full '<mask-layer>#' grammar.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// <mask-layer> = <mask-reference> || <position> [ / <bg-size> ]? || <repeat-style> ||
+// <geometry-box> || [ <geometry-box> | no-clip ] || <compositing-operator> || <masking-mode>
+
+// <mask-reference> = none | <image> | <mask-source>
+test_valid_value('mask', 'none');
+test_valid_value('mask', 'linear-gradient(to left bottom, red, blue)');
+test_valid_value('mask', 'linear-gradient(to left bottom, red, blue) luminance');
+test_valid_value('mask', 'url("https://{{host}}/")');
+
+// <position> [ / <bg-size> ]?
+test_valid_value('mask', 'linear-gradient(to left bottom, red, blue) 1px 2px');
+test_valid_value('mask', 'url("https://{{host}}/") 1px 2px / contain');
+
+// <repeat-style> = repeat-x | repeat-y | [repeat | space | round | no-repeat]{1,2}
+test_valid_value('mask', 'repeat-y');
+
+// <geometry-box> = <shape-box> | fill-box | stroke-box | view-box
+// <shape-box> = <box> | margin-box
+// <box> = border-box | padding-box | content-box
+test_valid_value('mask', 'border-box', 'none');
+test_valid_value('mask', 'linear-gradient(to left bottom, red, blue) padding-box');
+test_valid_value('mask', 'content-box');
+test_valid_value('mask', 'margin-box');
+test_valid_value('mask', 'url("https://{{host}}/") fill-box');
+test_valid_value('mask', 'linear-gradient(to left bottom, red, blue) stroke-box');
+test_valid_value('mask', 'view-box');
+
+// [ <geometry-box> | no-clip ]
+test_valid_value('mask', 'no-clip');
+
+// <compositing-operator> = add | subtract | intersect | exclude
+test_valid_value('mask', 'url("https://{{host}}/") add', 'url("https://{{host}}/")');
+test_valid_value('mask', 'subtract');
+test_valid_value('mask', 'url("https://{{host}}/") intersect');
+test_valid_value('mask', 'linear-gradient(to left bottom, red, blue) exclude');
+
+// <masking-mode> = alpha | luminance | auto
+test_valid_value('mask', 'alpha');
+test_valid_value('mask', 'url("https://{{host}}/") alpha');
+
+// <mask-layer> = <mask-reference> || <position> [ / <bg-size> ]? || <repeat-style> ||
+// <geometry-box> || [ <geometry-box> | no-clip ] || <compositing-operator> || <masking-mode>
+test_valid_value('mask', 'intersect no-clip space round 1px 2px / contain stroke-box linear-gradient(to left bottom, red, blue) luminance', 'linear-gradient(to left bottom, red, blue) luminance 1px 2px / contain space round stroke-box no-clip intersect');
+test_valid_value('mask', 'intersect no-clip space round 1px 2px / contain view-box, stroke-box linear-gradient(to left bottom, red, blue) luminance', '1px 2px / contain space round view-box no-clip intersect, linear-gradient(to left bottom, red, blue) luminance stroke-box');
+
+// Earlier versions of the mask shorthand always required a <mask-reference>.
+// To avoid unnecessarily losing test coverage, keep one of the test cases from back then.
+test_valid_value('mask', 'none alpha', 'alpha');
+
+</script>
+</body>
+</html>
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+++ b/testing/web-platform/tests/css/css-masking/resources/blue-20.png
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diff --git a/testing/web-platform/tests/css/css-masking/resources/green-20.png b/testing/web-platform/tests/css/css-masking/resources/green-20.png
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+++ b/testing/web-platform/tests/css/css-masking/resources/green-20.png
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diff --git a/testing/web-platform/tests/css/css-masking/resources/stripes-20.png b/testing/web-platform/tests/css/css-masking/resources/stripes-20.png
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index 0000000000..de30887ea3
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+++ b/testing/web-platform/tests/css/css-masking/resources/stripes-20.png
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