From b30896d7a03a23247ee06ecd902f74e57f8b7bb6 Mon Sep 17 00:00:00 2001
From: Marco Castelluccio <mcastelluccio@mozilla.com>
Date: Tue, 20 Feb 2024 09:28:58 +0000
Subject: [PATCH] Bug 1879524 [wpt PR 44496] - A non-invertible
 gradient/patternTransform make the paintserver invalid, a=testonly
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Automatic update from web-platform-tests
A non-invertible gradient/patternTransform make the paintserver invalid

The gradient/patternTransform properties follow the rules of the CSS
transforms spec:

 "If a transform function causes the current transformation matrix of an
  object to be non-invertible, the object and its content do not get
  displayed." [1]

Check if the relevant transform is non-invertible and flag the paintserver
as invalid if it is.

[1] https://drafts.csswg.org/css-transforms/#transform-function-lists

Fixed: 40742883
Change-Id: I53c65ff1d21f04e740aa0941ffc09aa6a465149d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5272857
Auto-Submit: Fredrik Söderquist <fsopera.com>
Reviewed-by: Stephen Chenney <schenneychromium.org>
Commit-Queue: Stephen Chenney <schenneychromium.org>
Cr-Commit-Position: refs/heads/main{#1258613}

--

wpt-commits: 7567b526725c3007d02476c9d03aaf10a9522b68
wpt-pr: 44496

UltraBlame original commit: dd4b03b63cd75791bab4b4a35f6af886cadb9157
---
 .../reftests/gradient-transform-01.svg         | 18 ++++++++++++++++++
 .../reftests/gradient-transform-02.svg         | 18 ++++++++++++++++++
 .../pservers/reftests/pattern-transform-02.svg | 18 ++++++++++++++++++
 3 files changed, 54 insertions(+)
 create mode 100644 testing/web-platform/tests/svg/pservers/reftests/gradient-transform-01.svg
 create mode 100644 testing/web-platform/tests/svg/pservers/reftests/gradient-transform-02.svg
 create mode 100644 testing/web-platform/tests/svg/pservers/reftests/pattern-transform-02.svg

diff --git a/testing/web-platform/tests/svg/pservers/reftests/gradient-transform-01.svg b/testing/web-platform/tests/svg/pservers/reftests/gradient-transform-01.svg
new file mode 100644
index 000000000000..310cb7de513e
--- /dev/null
+++ b/testing/web-platform/tests/svg/pservers/reftests/gradient-transform-01.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml">
+  <title>Gradients with non-invertible gradientTransforms, linearGradient</title>
+  <h:link rel="help" href="https://svgwg.org/svg2-draft/single-page.html#pservers-LinearGradientElementGradientTransformAttribute"/>
+  <h:link rel="help" href="https://drafts.csswg.org/css-transforms/#transform-function-lists"/>
+  <h:link rel="match" href="reference/green-100x100.svg"/>
+
+  <linearGradient id="scale0" gradientTransform="scale(0)">
+    <stop offset="0" stop-color="yellow"/>
+    <stop offset="1" stop-color="red"/>
+  </linearGradient>
+  <rect width="50" height="100" fill="url(#scale0) green"/>
+
+  <linearGradient id="matrix0" gradientTransform="matrix(0, 0, 0, 0, 0, 0)">
+    <stop offset="0" stop-color="yellow"/>
+    <stop offset="1" stop-color="red"/>
+  </linearGradient>
+  <rect x="50" width="50" height="100" fill="url(#matrix0) green"/>
+</svg>
diff --git a/testing/web-platform/tests/svg/pservers/reftests/gradient-transform-02.svg b/testing/web-platform/tests/svg/pservers/reftests/gradient-transform-02.svg
new file mode 100644
index 000000000000..1ce1006b8399
--- /dev/null
+++ b/testing/web-platform/tests/svg/pservers/reftests/gradient-transform-02.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml">
+  <title>Gradients with non-invertible gradientTransforms, radialGradient</title>
+  <h:link rel="help" href="https://svgwg.org/svg2-draft/single-page.html#pservers-RadialGradientElementGradientTransformAttribute"/>
+  <h:link rel="help" href="https://drafts.csswg.org/css-transforms/#transform-function-lists"/>
+  <h:link rel="match" href="reference/green-100x100.svg"/>
+
+  <radialGradient id="scale0" gradientTransform="scale(0)">
+    <stop offset="0" stop-color="yellow"/>
+    <stop offset="1" stop-color="red"/>
+  </radialGradient>
+  <rect width="50" height="100" fill="url(#scale0) green"/>
+
+  <radialGradient id="matrix0" gradientTransform="matrix(0, 0, 0, 0, 0, 0)">
+    <stop offset="0" stop-color="yellow"/>
+    <stop offset="1" stop-color="red"/>
+  </radialGradient>
+  <rect x="50" width="50" height="100" fill="url(#matrix0) green"/>
+</svg>
diff --git a/testing/web-platform/tests/svg/pservers/reftests/pattern-transform-02.svg b/testing/web-platform/tests/svg/pservers/reftests/pattern-transform-02.svg
new file mode 100644
index 000000000000..93acd1d62736
--- /dev/null
+++ b/testing/web-platform/tests/svg/pservers/reftests/pattern-transform-02.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml">
+  <title>Patterns with non-invertible patternTransforms</title>
+  <h:link rel="help" href="https://svgwg.org/svg2-draft/single-page.html#pservers-PatternElementPatternTransformAttribute"/>
+  <h:link rel="help" href="https://drafts.csswg.org/css-transforms/#transform-function-lists"/>
+  <h:link rel="match" href="reference/green-100x100.svg"/>
+
+  <pattern id="scale0" width="50" height="100"
+           patternTransform="scale(0)">
+    <rect width="50" height="100" fill="red"/>
+  </pattern>
+  <rect width="50" height="100" fill="url(#scale0) green"/>
+
+  <pattern id="matrix0" width="50" height="100"
+           patternTransform="matrix(0, 0, 0, 0, 0, 0)">
+    <rect width="50" height="100" fill="red"/>
+  </pattern>
+  <rect x="50" width="50" height="100" fill="url(#matrix0) green"/>
+</svg>