1 files changed, 31 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.blur-from-outside-canvas.no-clipping.html b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.blur-from-outside-canvas.no-clipping.html
new file mode 100644
index 0000000000..3cd1c674a1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.blur-from-outside-canvas.no-clipping.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<link rel="match" href="2d.layer.blur-from-outside-canvas.no-clipping-expected.html">
+<title>Canvas test: 2d.layer.blur-from-outside-canvas.no-clipping</title>
+<h1>2d.layer.blur-from-outside-canvas.no-clipping</h1>
+<p class="desc">Checks blur leaking inside from drawing outside the canvas</p>
+<canvas id="canvas" width="200" height="200">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = new OffscreenCanvas(200, 200);
+  const ctx = canvas.getContext('2d');
+
+  // No clipping.
+
+  ctx.beginLayer({filter: [ {name: 'gaussianBlur', stdDeviation: 30} ]});
+
+  ctx.fillStyle = 'turquoise';
+  ctx.fillRect(201, 50, 100, 100);
+  ctx.fillStyle = 'indigo';
+  ctx.fillRect(50, 201, 100, 100);
+  ctx.fillStyle = 'orange';
+  ctx.fillRect(-1, 50, -100, 100);
+  ctx.fillStyle = 'brown';
+  ctx.fillRect(50, -1, 100, -100);
+
+  ctx.endLayer();
+
+  const outputCanvas = document.getElementById("canvas");
+  outputCanvas.getContext('2d').drawImage(canvas, 0, 0);
+</script>