1 files changed, 146 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/origin-clean-conformance-offscreencanvas.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/origin-clean-conformance-offscreencanvas.html
new file mode 100644
index 0000000000..2c6a118cc1
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/origin-clean-conformance-offscreencanvas.html
@@ -0,0 +1,146 @@
+<!--
+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 Origin Restrictions Conformance Tests for OffscreenCanvas</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"></canvas>
+<img id="img" style="display:none;">
+<script>
+"use strict";
+var wtu = WebGLTestUtils;
+
+// Checks if function throws an exception.
+function causedException(func) {
+  var hadException = false;
+  try {
+    func();
+  } catch(e) {
+    hadException = true;
+  }
+  return hadException;
+}
+
+var defaultImgUrl = "https://get.webgl.org/conformance-resources/opengl_logo.jpg";
+var localImgUrl = "../../../resources/opengl_logo.jpg";
+
+var imgDomain;
+var pageDomain;
+
+function imageLoaded(img) {
+  description("This test ensures WebGL2 implementations for OffscreenCanvas follow proper same-origin restrictions.");
+
+  if (!window.OffscreenCanvas) {
+    testPassed("No OffscreenCanvas support");
+    finishTest();
+    return;
+  }
+
+  assertMsg(img.width > 0 && img.height > 0, "img was loaded");
+  imgDomain = wtu.getBaseDomain(wtu.getHost(img.src));
+  pageDomain = wtu.getBaseDomain(window.location.host);
+  assertMsg(imgDomain != pageDomain,
+            "img domain (" + imgDomain + ") and page domain (" + pageDomain + ") are not the same.");
+
+  function makeTexImage2D(gl, src) {
+    return function() {
+      gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 10, 10, 0, gl.RGBA, gl.UNSIGNED_BYTE, src);
+    };
+  }
+
+  function makeTexSubImage2D(gl, src) {
+    return function() {
+      gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 10, 10, gl.RGBA, gl.UNSIGNED_BYTE, src);
+    };
+  }
+
+  function makeTexImage3D(gl, src) {
+    return function() {
+      gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA, 10, 10, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, src);
+    };
+  }
+
+  function makeTexSubImage3D(gl, src) {
+    return function() {
+      gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, 10, 10, 1, gl.RGBA, gl.UNSIGNED_BYTE, src);
+    };
+  }
+
+  function makeReadPixels(gl) {
+    return function() {
+      var buf = new Uint8Array(4);
+      gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, buf);
+    };
+  }
+
+  var offscreencanvas = new OffscreenCanvas(10, 10);
+  var gl = wtu.create3DContext(offscreencanvas, null, 2);
+
+  debug("");
+  debug("check that an attempt to upload an image from another origin throws an exception.");
+  var tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 256, 256, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+  assertMsg(causedException(makeTexImage2D(gl, img)),
+            "texImage2D with cross-origin image should throw exception.");
+  assertMsg(causedException(makeTexSubImage2D(gl, img)),
+            "texSubImage2D with cross-origin image should throw exception.");
+  assertMsg(causedException(makeTexImage3D(gl, img)),
+            "texImage3D with cross-origin image should throw exception.");
+  assertMsg(causedException(makeTexSubImage3D(gl, img)),
+            "texSubImage3D with cross-origin image should throw exception.");
+
+
+  debug("check that readPixels continues to work against this offscreencanvas.");
+  assertMsg(!causedException(makeReadPixels(gl)),
+            "readPixels should never throw exception -- not possible to dirty origin of WebGL2 canvas.");
+
+  debug("check that an attempt to upload a tainted canvas throws an exception.");
+  var canvas = document.getElementById("canvas");
+  var ctx2d = canvas.getContext("2d");
+  ctx2d.drawImage(img, 0, 0);
+  assertMsg(causedException(makeTexImage2D(gl, canvas)),
+            "texImage2D with NON origin clean canvas should throw exception.");
+  assertMsg(causedException(makeTexSubImage2D(gl, canvas)),
+            "texSubImage2D with NON origin clean canvas should throw exception.");
+  assertMsg(causedException(makeTexImage3D(gl, canvas)),
+            "texImage3D with NON origin clean canvas should throw exception.");
+  assertMsg(causedException(makeTexSubImage3D(gl, canvas)),
+            "texSubImage3D with NON origin clean canvas should throw exception.");
+
+  debug("check that readPixels continues to work against this offscreencanvas.");
+  assertMsg(!causedException(makeReadPixels(gl)),
+            "readPixels should never throw exception -- not possible to dirty origin of WebGL2 canvas.");
+
+  // TODO: Should check video.
+  // TODO: Should check CORS support.
+
+  finishTest();
+}
+
+(async function() {
+  const img = document.getElementById('img');
+  try {
+    await wtu.awaitOrTimeout(wtu.loadCrossOriginImage(img, defaultImgUrl, localImgUrl), 1000);
+  } catch (e) {
+    testFailed(`Image setup failed (${e}).`);
+    finishTest();
+    return;
+  }
+  imageLoaded(img);
+})();
+</script>
+</body>
+</html>