1 files changed, 72 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/js/tests/typed-array-worker.js b/dom/canvas/test/webgl-conf/checkout/js/tests/typed-array-worker.js
new file mode 100644
index 0000000000..c361a0e8a2
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/js/tests/typed-array-worker.js
@@ -0,0 +1,72 @@
+/*
+Copyright (c) 2019 The Khronos Group Inc.
+Use of this source code is governed by an MIT-style license that can be
+found in the LICENSE.txt file.
+*/
+
+function constructTypedArray(type, data) {
+  if (type == 'Int8Array') {
+    return new Int8Array(data);
+  } else if (type == 'Uint8Array') {
+    return new Uint8Array(data);
+  } else if (type == 'Uint8ClampedArray') {
+    return new Uint8ClampedArray(data);
+  } else if (type == 'Int16Array') {
+    return new Int16Array(data);
+  } else if (type == 'Uint16Array') {
+    return new Uint16Array(data);
+  } else if (type == 'Int32Array') {
+    return new Int32Array(data);
+  } else if (type == 'Uint32Array') {
+    return new Uint32Array(data);
+  } else if (type == 'Float32Array') {
+    return new Float32Array(data);
+  } else if (type == 'Float64Array') {
+    return new Float64Array(data);
+  }
+}
+
+function constructDataView(subType, elementSizeInBytes, data) {
+  var setter = "set" + subType;
+  var byteOffset = 0;
+  var buffer = new ArrayBuffer(elementSizeInBytes * data.length);
+  var dataView = new DataView(buffer);
+  for (var ii = 0; ii < data.length; ++ii) {
+    dataView[setter](byteOffset, data[ii]);
+    byteOffset += elementSizeInBytes;
+  }
+  return dataView;
+}
+
+onmessage = function(event) {
+  var message = event.data;
+  if (message.command == 'copy' ||
+      message.command == 'transfer' ||
+      message.command == 'copyBuffer' ||
+      message.command == 'transferBuffer') {
+    var view;
+    if (message.type != 'DataView') {
+      view = constructTypedArray(message.type, message.data);
+    } else {
+      view = constructDataView(message.subType, message.elementSizeInBytes, message.data);
+    }
+    var valueToSend;
+    if (message.command == 'copy' ||
+        message.command == 'transfer') {
+      valueToSend = view;
+    } else {
+      valueToSend = view.buffer;
+    }
+    var transferablesToSend = undefined;
+    if (message.command == 'transfer' ||
+        message.command == 'transferBuffer') {
+      transferablesToSend = [ view.buffer ];
+    }
+    postMessage(valueToSend, transferablesToSend);
+  } else if (message.command == 'pong') {
+    postMessage(message.data, message.transferables);
+  } else if (message.command == 'ignore') {
+  } else {
+    postMessage('error: unknown message');
+  }
+};