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Unified Diff: third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-clearRect-in-worker.html

Issue 1775153002: Make OffscreenCanvasRenderingContext2D renderable on a worker (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase Created 4 years, 9 months ago
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Index: third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-clearRect-in-worker.html
diff --git a/third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-clearRect-in-worker.html b/third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-clearRect-in-worker.html
new file mode 100644
index 0000000000000000000000000000000000000000..392fcdfda4bf1f5499de8427902b213fe65d9b8a
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-clearRect-in-worker.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+<body>
+<canvas id='output' width='100' height='100'></canvas>
+
+<script id='myWorker' type='text/worker'>
+self.onmessage = function(e) {
+ var aCanvas = new OffscreenCanvas(100, 100);
+ var ctx = aCanvas.getContext('2d');
+ ctx.fillStyle = 'green';
+ ctx.fillRect(20, 20, 60, 60);
+ ctx.fillStyle = 'red';
+ ctx.fillRect(25, 25, 50, 50);
+ // No red should be visible after this
+ ctx.clearRect(25, 25, 50, 50);
+ var image = aCanvas.transferToImageBitmap();
+ self.postMessage(image, [image]);
+};
+</script>
+
+<script>
+if (window.testRunner) {
+ testRunner.waitUntilDone();
+}
+var blob = new Blob([document.getElementById('myWorker').textContent]);
+var worker = new Worker(URL.createObjectURL(blob));
+worker.addEventListener('message', msg => {
+ var outputCtx = document.getElementById('output').getContext('imagebitmap');
+ outputCtx.transferImageBitmap(msg.data);
+ if (window.testRunner) {
+ testRunner.notifyDone();
+ }
+});
+worker.postMessage("");
+</script>
+</body>
+</html>

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