2 files changed, 157 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/sync/00_test_list.txt b/dom/canvas/test/webgl-conf/checkout/conformance2/sync/00_test_list.txt
new file mode 100644
index 0000000000..474af6c765
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/sync/00_test_list.txt
@@ -0,0 +1 @@
+sync-webgl-specific.html
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/sync/sync-webgl-specific.html b/dom/canvas/test/webgl-conf/checkout/conformance2/sync/sync-webgl-specific.html
new file mode 100644
index 0000000000..a9ec78e3be
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/sync/sync-webgl-specific.html
@@ -0,0 +1,156 @@
+<!--
+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.
+-->
+
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>WebGL2 specific sync object behaviors</title>
+<link rel="stylesheet" href="../../resources/js-test-style.css"/>
+<script src="../../js/js-test-pre.js"></script>
+<script src="../../js/webgl-test-utils.js"></script>
+</head>
+<body>
+<div id="description"></div>
+<div id="console"></div>
+<canvas id="canvas" width="2" height="2"> </canvas>
+<script>
+"use strict";
+description("This test checks WebGL2 specific sync object behaviors");
+
+debug("");
+debug("Canvas.getContext");
+
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("canvas", null, 2);
+var sync = null;
+var pixel = new Uint8Array(4);
+
+if (!gl) {
+  testFailed("context does not exist");
+  finishTest();
+} else {
+  testPassed("context exists");
+
+  debug("");
+  shouldBe("gl.TIMEOUT_IGNORED", "-1");
+  shouldBe("gl.MAX_CLIENT_WAIT_TIMEOUT_WEBGL", "0x9247");
+  var max = gl.getParameter(gl.MAX_CLIENT_WAIT_TIMEOUT_WEBGL);
+  debug("Querying gl.MAX_CLIENT_WAIT_TIMEOUT_WEBGL");
+  shouldBe("gl.getError()", "gl.NO_ERROR");
+  debug("gl.MAX_CLIENT_WAIT_TIMEOUT_WEBGL returns " + max + "ns");
+  if (max < 0) {
+    testFailed("gl.MAX_CLIENT_WAIT_TIMEOUT_WEBGL < 0");
+  } else if (max > 1000 * 1000 * 1000) {
+    // This is not demanded by the WebGL2 spec, but anything larger than 1000ms
+    // is bad idea and no implementation should allow it.
+    testFailed("gl.MAX_CLIENT_WAIT_TIMEOUT_WEBGL should not exceed 1000ms");
+  } else {
+    testPassed("gl.MAX_CLIENT_WAIT_TIMEOUT_WEBGL returns a valid value");
+  }
+  sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);
+  shouldBeNonNull("sync");
+  shouldBe("gl.getError()", "gl.NO_ERROR");
+  gl.clientWaitSync(sync, 0, max);
+  shouldBe("gl.getError()", "gl.NO_ERROR");
+  gl.clientWaitSync(sync, 0, max + 1);
+  shouldBe("gl.getError()", "gl.INVALID_OPERATION");
+
+  requestAnimationFrame(runGetSyncParameterTest);
+}
+
+var numRetries = 20000;
+var iteration = 0;
+
+function syncWithGLServer() {
+  gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixel);
+}
+
+function runGetSyncParameterTest() {
+  debug("");
+  debug("Verifying sync object isn't signaled too early");
+  sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);
+  // Verify as best as possible that the implementation doesn't allow a sync
+  // object to become signaled until returning control to the event loop, by
+  // spin-looping for some time.
+  var iter = numRetries;
+  while (--iter > 0) {
+    syncWithGLServer();
+    if (gl.getSyncParameter(sync, gl.SYNC_STATUS) == gl.SIGNALED) {
+      testFailed("Sync object was signaled too early");
+      finishTest();
+      return;
+    }
+  }
+  testPassed("Sync object wasn't signaled too early");
+  iteration = numRetries;
+  requestAnimationFrame(finishSyncParameterTest);
+}
+
+
+function finishSyncParameterTest() {
+  if (--iteration == 0) {
+    testFailed("Sync object wasn't signaled in a reasonable timeframe (" + numRetries + " iterations)");
+    finishTest();
+    return;
+  }
+  var res = gl.getSyncParameter(sync, gl.SYNC_STATUS);
+  if (res == gl.SIGNALED) {
+    testPassed("Sync object was signaled");
+    requestAnimationFrame(runClientWaitSyncTest);
+    return;
+  }
+  // Try again.
+  syncWithGLServer();
+  requestAnimationFrame(finishSyncParameterTest);
+}
+
+function runClientWaitSyncTest() {
+  debug("");
+  debug("Verifying clientWaitSync doesn't complete too early");
+
+  sync = gl.fenceSync(gl.SYNC_GPU_COMMANDS_COMPLETE, 0);
+  // Verify as best as possible that the implementation doesn't allow
+  // clientWaitSync to return CONDITION_SATISFIED or ALREADY_SIGNALED until
+  // returning control to the event loop, by spin-looping for some time.
+  var iter = numRetries;
+  while (--iter > 0) {
+    syncWithGLServer();
+    var res = gl.clientWaitSync(sync, 0, 0);
+    if (res == gl.CONDITION_SATISFIED || res == gl.ALREADY_SIGNALED) {
+      testFailed("clientWaitSync completed successfully too early");
+      finishTest();
+      return;
+    }
+  }
+  testPassed("clientWaitSync didn't complete successfully too early");
+  iteration = numRetries;
+  requestAnimationFrame(finishClientWaitSyncTest);
+}
+
+function finishClientWaitSyncTest() {
+  if (--iteration == 0) {
+    testFailed("clientWaitSync didn't complete in a reasonable timeframe (" + numRetries + " iterations)");
+    finishTest();
+    return;
+  }
+  var res = gl.clientWaitSync(sync, 0, 0);
+  if (res == gl.CONDITION_SATISFIED || res == gl.ALREADY_SIGNALED) {
+    testPassed("clientWaitSync completed successfully");
+    // This is the last test right now.
+    finishTest();
+    return;
+  }
+  // Try again.
+  syncWithGLServer();
+  requestAnimationFrame(finishClientWaitSyncTest);
+}
+
+debug("");
+var successfullyParsed = true;
+</script>
+</body>
+</html>