1 files changed, 35 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.4.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.4.html
new file mode 100644
index 0000000000..468db2a716
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.alpha.4.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.shadow.alpha.4</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+
+<h1>2d.shadow.alpha.4</h1>
+<p class="desc">Shadows with alpha components are correctly affected by globalAlpha</p>
+
+
+<script>
+var t = async_test("Shadows with alpha components are correctly affected by globalAlpha");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
+  ctx.shadowColor = 'rgba(0, 0, 255, 0.707)';
+  ctx.shadowOffsetY = 50;
+  ctx.globalAlpha = 0.707;
+  ctx.fillRect(0, -50, 100, 50);
+
+  _assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);
+  t.done();
+
+});
+</script>