Index: third_party/WebKit/LayoutTests/fast/canvas/webgl/offscreenCanvas-context-lost-restored-worker.html |
diff --git a/third_party/WebKit/LayoutTests/fast/canvas/webgl/offscreenCanvas-context-lost-restored-worker.html b/third_party/WebKit/LayoutTests/fast/canvas/webgl/offscreenCanvas-context-lost-restored-worker.html |
new file mode 100644 |
index 0000000000000000000000000000000000000000..871a306f870907fb40d49e648e1338f92a040bab |
--- /dev/null |
+++ b/third_party/WebKit/LayoutTests/fast/canvas/webgl/offscreenCanvas-context-lost-restored-worker.html |
@@ -0,0 +1,127 @@ |
+<!DOCTYPE html> |
+<html> |
+<head> |
+<script src="../../../resources/testharness.js"></script> |
+<script src="../../../resources/testharnessreport.js"></script> |
+<script src="./resources/webgl-test-utils-full.js"></script> |
+</head> |
+ |
+<script id="myWorker" type="text/worker"> |
+var canvas; |
+var gl; |
+var WEBGL_lose_context; |
+var allowRestore; |
+var contextLostEventFired; |
+var contextRestoredEventFired; |
+// Make everything in results true for easy testing |
+var results = []; |
+ |
+function setupTest() |
+{ |
+ canvas = new OffscreenCanvas(10, 10); |
+ gl = canvas.getContext('webgl'); |
+ WEBGL_lose_context = gl.getExtension("WEBGL_lose_context"); |
+} |
+ |
+function testOriginalContext() |
+{ |
+ results.push(!gl.isContextLost()); |
+ results.push(gl.getError() == gl.NO_ERROR); |
+} |
+ |
+function testLostContext(e) |
+{ |
+ results.push(!contextLostEventFired); |
+ contextLostEventFired = true; |
+ results.push(gl.isContextLost()); |
+ results.push(gl.getError() == gl.NO_ERROR); |
+ if (allowRestore) |
+ e.preventDefault(); |
+} |
+ |
+function testShouldNotRestoreContext(e) |
+{ |
+ // Should not restore the context unless preventDefault is called on the context lost event |
+ results.push(false); |
+} |
+ |
+function compareGLError(glError, evalStr) { |
+ var exception; |
+ try { |
+ eval(evalStr); |
+ } catch(e) { |
+ exception = e; |
+ } |
+ if (exception) { |
+ return false; |
+ } else { |
+ if (gl.getError() == glError) |
+ return true; |
+ return false; |
+ } |
+} |
+ |
+function testRestoredContext() { |
+ results.push(!contextRestoredEventFired); |
+ contextRestoredEventFired = true; |
+ results.push(!gl.isContextLost()); |
+ results.push(gl.getError() == gl.NO_ERROR); |
+} |
+ |
+self.onmessage = function(e) { |
+ setupTest(); |
+ testOriginalContext(); |
+ |
+ canvas.addEventListener("webglcontextrestored", testShouldNotRestoreContext); |
+ canvas.addEventListener("webglcontextlost", function(e) { |
+ testLostContext(e); |
+ // restore the context after this event has exited. |
+ setTimeout(function() { |
+ // we didn't call prevent default so we should not be able to restore the context |
+ results.push(compareGLError(gl.INVALID_OPERATION, "WEBGL_lose_context.restoreContext()")); |
+ results.push(gl.isContextLost()); |
+ results.push(gl.getError() == gl.NO_ERROR); |
+ // gl methods should still be no-ops |
+ results.push(compareGLError(gl.NO_ERROR, "gl.blendFunc(gl.TEXTURE_2D, gl.TEXTURE_CUBE_MAP)")); |
+ results.push(false); |
+ setTimeout(function() { |
+ testRestoredContext(); |
+ self.postMessage(results); |
+ }, 0); |
+ }, 0); |
+ }); |
+ allowRestore = false; |
+ contextLostEventFired = false; |
+ contextRestoredEventFired = false; |
+ |
+ WEBGL_lose_context.loseContext(); |
+ // The context should be lost immediately. |
+ results.push(gl.isContextLost()); |
+ results.push(gl.getError() == gl.CONTEXT_LOST_WEBGL); |
+ results.push(gl.getError() == gl.NO_ERROR); |
+ // gl methods should be no-ops |
+ results.push(compareGLError(gl.NO_ERROR, "gl.blendFunc(gl.TEXTURE_2D, gl.TEXTURE_CUBE_MAP)")); |
+ // but the event should not have been fired. |
+ results.push(!contextLostEventFired); |
+}; |
+ |
+</script> |
+ |
+<script> |
+function makeWorker(script) |
+{ |
+ var blob = new Blob([script]); |
+ return new Worker(URL.createObjectURL(blob)); |
+} |
+ |
+var t = async_test('Test that WebGL context restore event can be handled with OffscreenCanvas in a worker'); |
+var worker = makeWorker(document.getElementById("myWorker").textContent); |
+worker.addEventListener('message', t.step_func(function(msg) { |
+ assert_equals(msg.data.length, 18); |
+ for (var i = 0; i < msg.data.length; ++i) |
+ assert_true(msg.data[i]); |
+ t.done(); |
+})); |
+worker.postMessage('start'); |
+</script> |
+</html> |