Paint nothing when feImage references svg inlines

The spec states that non-image feImage references should be rendered "according to the behavior of the use element" (https://drafts.fxtf.org/filter-effects/#feImageElement), which is nothing for the case of a standalone tspan. Fixed: 383187487 Change-Id: If3f8438676c593f6e9aab4f879ea9212a0806621 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6111507 Reviewed-by: Fredrik Söderquist <fs@opera.com> Commit-Queue: Philip Rogers <pdr@chromium.org> Cr-Commit-Position: refs/heads/main@{#1399218}
web-platform-tests · Dec 20, 2024 · f019be2 · f019be2
1 parent 61a2d96
commit f019be2
Showing 1 changed file with 23 additions and 0 deletions.
diff --git a/css/filter-effects/svg-feimage-004.html b/css/filter-effects/svg-feimage-004.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>Filter Effects Test: feImage referencing a tspan</title>
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#feImageElement">
+<meta name="assert" content="feImage non-image references should render 'according to the behavior of the use element', which is nothing for a standalone tspan.">
+<link rel="match" href="reference/svg-feimage-ref.html">
+<p>The test passes if you see a black square and no red.</p>
+<svg width="500" height="500">
+  <defs>
+    <filter id="filter-tspan" x="0" y="0" width="5" height="5">
+      <feImage href="#tspan"></feImage>
+    </filter>
+    <filter id="filter-use-tspan" x="0" y="0" width="5" height="5">
+      <feImage href="#use-tspan"></feImage>
+    </filter>
+    <text>
+      <tspan id="tspan" x="0" y="1em" fill="red">FAIL</tspan>
+    </text>
+    <use id="use-tspan" href="#tspan"></use>
+  </defs>
+  <rect width="300" height="300" fill="black"></rect>
+  <rect width="300" height="150" fill="red" filter="url(#filter-tspan)"></rect>
+  <rect width="300" height="150" fill="red" y="150" filter="url(#filter-use-tspan)"></rect>
+</svg>