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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/state/state-uneffected-after-compositing.html b/dom/canvas/test/webgl-conf/checkout/conformance/state/state-uneffected-after-compositing.html
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+<!--
+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>WebGL: Check that state is not lost by compositing</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>
+<canvas id="testbed" width="16" height="16" style="width:50px; height:50px"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description();
+var wtu = WebGLTestUtils;
+
+function runTest()
+{
+  var gl = wtu.create3DContext('testbed', { antialias: false });
+  if (!gl) {
+    testFailed('could not create context');
+    return;
+  }
+
+  var program = wtu.setupTexturedQuad(gl);
+  var tex = gl.createTexture();
+  var fb = gl.createFramebuffer();
+
+  var step1 = function() {
+    wtu.fillTexture(gl, tex, 1, 1, [0, 255, 0, 255]);
+    wtu.clearAndDrawUnitQuad(gl);
+    wtu.checkCanvas(gl, [0, 255, 0, 255], "drawing with texture should be green");
+  };
+
+  var step2 = function() {
+    wtu.clearAndDrawUnitQuad(gl);
+    wtu.checkCanvas(gl, [0, 255, 0, 255], "drawing with texture after composite without rebinding should be green");
+
+    // Clear background to red
+    gl.clearColor(1, 0, 0, 1);
+    gl.clear(gl.COLOR_BUFFER_BIT);
+
+    // Bind framebuffer with green texture.
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
+    wtu.checkCanvasRect(gl, 0, 0, 1, 1, [0, 255, 0, 255], "reading from fbo with attached texture should be green");
+  };
+
+  var step3 = function() {
+    // Should still have fb bound and reading should be green
+    wtu.checkCanvasRect(gl, 0, 0, 1, 1, [0, 255, 0, 255], "reading from fbo after composite without rebinding should be green");
+  };
+
+  var steps = [
+    step1,
+    step2,
+    step3,
+  ];
+
+  var stepIndex = 0;
+  var runNextStep = function() {
+    steps[stepIndex++]();
+    if (stepIndex == steps.length) {
+      wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+      finishTest();
+      return;
+    }
+    wtu.waitForComposite(runNextStep);
+  };
+  runNextStep();
+}
+
+runTest();
+var successfullyParsed = true;
+</script>
+</body>
+</html>
+