1 files changed, 51 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending-expected.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending-expected.html
new file mode 100644
index 0000000000..7c91ce4229
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.global-states.filter.alpha.blending-expected.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.layer.global-states.filter.alpha.blending</title>
+<h1>2d.layer.global-states.filter.alpha.blending</h1>
+<p class="desc">Checks that layers with filters correctly use global render states.</p>
+<canvas id="canvas" width="200" height="200">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  const svg = `
+    <svg xmlns="http://www.w3.org/2000/svg"
+          width="200" height="200"
+          color-interpolation-filters="sRGB">
+      <filter id="filter" x="-100%" y="-100%" width="300%" height="300%">
+        <feColorMatrix
+            type="matrix"
+            values="0.393 0.769 0.189 0 0
+                    0.349 0.686 0.168 0 0
+                    0.272 0.534 0.131 0 0
+                    0 0 0 1 0" />
+        <feComponentTransfer>
+          <feFuncA type="table" tableValues="0 0.7"></feFuncA>
+        </feComponentTransfer>
+        <feDropShadow dx="5" dy="5" flood-color="#81e" />
+      </filter>
+      <g filter="url(#filter)">
+        <rect x="50" y="50" width="75" height="50" fill="rgba(200, 0, 0, 1)"/>
+        <rect x="70" y="70" width="75" height="50" fill="rgba(0, 200, 0, 1)"/>
+      </g>
+    </svg>`;
+
+  const img = new Image();
+  img.width = 200;
+  img.height = 200;
+  img.onload = () => {
+    ctx.fillStyle = 'rgba(0, 0, 255, 1)';
+
+    var circle = new Path2D();
+    circle.arc(90, 90, 45, 0, 2 * Math.PI);
+    ctx.fill(circle);
+
+    ctx.globalAlpha = 0.6;
+  ctx.globalCompositeOperation = 'multiply';
+
+    ctx.drawImage(img, 0, 0);
+  };
+  img.src = 'data:image/svg+xml;base64,' + btoa(svg);
+</script>