From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../conformance2/textures/misc/00_test_list.txt    |  40 ++
 .../textures/misc/active-3d-texture-bug.html       | 124 +++++
 .../textures/misc/angle-stuck-depth-textures.html  | 197 +++++++
 ...ains-unchanged-after-used-in-webgl-texture.html |  73 +++
 .../misc/compressed-tex-from-pbo-crash.html        |  44 ++
 .../textures/misc/compressed-tex-image.html        |  24 +
 .../misc/copy-texture-cube-map-AMD-bug.html        | 104 ++++
 .../textures/misc/copy-texture-cube-map-bug.html   |  49 ++
 .../misc/copy-texture-image-luma-format.html       | 165 ++++++
 .../misc/copy-texture-image-same-texture.html      | 144 +++++
 .../misc/copy-texture-image-webgl-specific.html    | 303 +++++++++++
 .../textures/misc/copy-texture-image.html          | 249 +++++++++
 .../generate-mipmap-with-large-base-level.html     |  56 ++
 .../textures/misc/gl-get-tex-parameter.html        |  27 +
 .../misc/immutable-tex-render-feedback.html        | 221 ++++++++
 .../integer-cubemap-specification-order-bug.html   | 216 ++++++++
 .../misc/integer-cubemap-texture-sampling.html     | 169 ++++++
 .../conformance2/textures/misc/mipmap-fbo.html     |  50 ++
 .../textures/misc/npot-video-sizing.html           | 181 +++++++
 .../origin-clean-conformance-offscreencanvas.html  | 146 +++++
 .../misc/tex-3d-mipmap-levels-intel-bug.html       |  82 +++
 .../textures/misc/tex-3d-size-limit.html           | 189 +++++++
 .../textures/misc/tex-base-level-bug.html          |  76 +++
 ...ub-image-with-array-buffer-view-sub-source.html | 197 +++++++
 .../tex-image-with-bad-args-from-dom-elements.html | 128 +++++
 .../textures/misc/tex-image-with-bad-args.html     |  57 ++
 .../misc/tex-image-with-different-data-source.html |  51 ++
 .../textures/misc/tex-input-validation.html        |  24 +
 .../textures/misc/tex-mipmap-levels.html           | 225 ++++++++
 .../textures/misc/tex-new-formats.html             | 565 ++++++++++++++++++++
 .../textures/misc/tex-srgb-mipmap.html             | 220 ++++++++
 .../conformance2/textures/misc/tex-storage-2d.html | 290 ++++++++++
 .../textures/misc/tex-storage-and-subimage-3d.html | 242 +++++++++
 .../misc/tex-storage-compressed-formats.html       | 136 +++++
 .../textures/misc/tex-subimage3d-canvas-bug.html   |  56 ++
 .../misc/tex-subimage3d-pixel-buffer-bug.html      |  90 ++++
 .../textures/misc/tex-unpack-params-imagedata.html | 126 +++++
 ...k-params-with-flip-y-and-premultiply-alpha.html | 499 +++++++++++++++++
 .../textures/misc/tex-unpack-params.html           | 591 +++++++++++++++++++++
 .../textures/misc/texel-fetch-undefined.html       |  82 +++
 .../conformance2/textures/misc/texture-npot.html   | 160 ++++++
 41 files changed, 6668 insertions(+)
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/00_test_list.txt
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/active-3d-texture-bug.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/angle-stuck-depth-textures.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/compressed-tex-from-pbo-crash.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/compressed-tex-image.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-cube-map-AMD-bug.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-cube-map-bug.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-luma-format.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-same-texture.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-webgl-specific.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/generate-mipmap-with-large-base-level.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/gl-get-tex-parameter.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/immutable-tex-render-feedback.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/integer-cubemap-specification-order-bug.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/integer-cubemap-texture-sampling.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/mipmap-fbo.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/npot-video-sizing.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/origin-clean-conformance-offscreencanvas.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-3d-mipmap-levels-intel-bug.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-3d-size-limit.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-base-level-bug.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-and-sub-image-with-array-buffer-view-sub-source.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-bad-args-from-dom-elements.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-bad-args.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-different-data-source.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-input-validation.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-mipmap-levels.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-new-formats.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-srgb-mipmap.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-2d.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-and-subimage-3d.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-compressed-formats.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-subimage3d-canvas-bug.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-subimage3d-pixel-buffer-bug.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params-imagedata.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params-with-flip-y-and-premultiply-alpha.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/texel-fetch-undefined.html
 create mode 100644 dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/texture-npot.html

(limited to 'dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc')

diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/00_test_list.txt b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/00_test_list.txt
new file mode 100644
index 0000000000..17f8312e58
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/00_test_list.txt
@@ -0,0 +1,40 @@
+--min-version 2.0.1 active-3d-texture-bug.html
+--min-version 2.0.1 angle-stuck-depth-textures.html
+canvas-remains-unchanged-after-used-in-webgl-texture.html
+--min-version 2.0.1 compressed-tex-from-pbo-crash.html
+--min-version 2.0.1 compressed-tex-image.html
+--min-version 2.0.1 copy-texture-cube-map-AMD-bug.html
+--min-version 2.0.1 copy-texture-cube-map-bug.html
+copy-texture-image.html
+copy-texture-image-luma-format.html
+--min-version 2.0.1 copy-texture-image-same-texture.html
+copy-texture-image-webgl-specific.html
+--min-version 2.0.1 generate-mipmap-with-large-base-level.html
+gl-get-tex-parameter.html
+--min-version 2.0.1 immutable-tex-render-feedback.html
+--min-version 2.0.1 integer-cubemap-texture-sampling.html
+--min-version 2.0.1 integer-cubemap-specification-order-bug.html
+mipmap-fbo.html
+--min-version 2.0.1 npot-video-sizing.html
+--min-version 2.0.1 tex-3d-mipmap-levels-intel-bug.html
+--min-version 2.0.1 origin-clean-conformance-offscreencanvas.html
+tex-3d-size-limit.html
+--min-version 2.0.1 tex-base-level-bug.html
+tex-image-and-sub-image-with-array-buffer-view-sub-source.html
+tex-image-with-bad-args.html
+tex-image-with-bad-args-from-dom-elements.html
+tex-image-with-different-data-source.html
+tex-input-validation.html
+tex-mipmap-levels.html
+tex-new-formats.html
+--min-version 2.0.1 tex-srgb-mipmap.html
+tex-storage-2d.html
+tex-storage-and-subimage-3d.html
+tex-storage-compressed-formats.html
+--min-version 2.0.1 tex-subimage3d-canvas-bug.html
+--min-version 2.0.1 tex-subimage3d-pixel-buffer-bug.html
+tex-unpack-params.html
+--min-version 2.0.1 tex-unpack-params-imagedata.html
+--min-version 2.0.1 tex-unpack-params-with-flip-y-and-premultiply-alpha.html
+texel-fetch-undefined.html
+texture-npot.html
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/active-3d-texture-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/active-3d-texture-bug.html
new file mode 100644
index 0000000000..fe86514dd2
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/active-3d-texture-bug.html
@@ -0,0 +1,124 @@
+<!--
+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 Active TEXTURE1 Bug Tests</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>
+<canvas id="canvas" width="64" height="64"> </canvas>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">#version 300 es
+precision mediump float;
+in vec4 a_position;
+in vec2 a_coord;
+out vec2 v_coord;
+void main() {
+    gl_Position = a_position;
+    v_coord = a_coord;
+}
+</script>
+<script id="fshader" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+in vec2 v_coord;
+uniform mediump sampler3D u_sampler;
+out vec4 o_color;
+void main () {
+    o_color = texture(u_sampler, vec3(v_coord, 0.0));
+}
+</script>
+<script>
+"use strict";
+description("Test for a MacOSX 10.12 with Intel GPUs driver crash bug activating TEXTURE1 for 3d texture");
+debug("");
+
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("canvas");
+var gl = wtu.create3DContext(canvas, null, 2);
+var samplerLoc;
+
+function render(textureUnit, width, height, expectedColor, msg) {
+    gl.uniform1i(samplerLoc, textureUnit);
+    wtu.setupUnitQuad(gl, 0, 1);
+    wtu.clearAndDrawUnitQuad(gl);
+    wtu.checkCanvasRect(gl, 0, 0, width, height, expectedColor, msg);
+}
+
+function activeTextureTest() {
+    var texture = gl.createTexture();
+    var sampler = gl.createSampler();
+    var width = 64;
+    var height = 64;
+    var depth = 4;
+    var black = [0, 0, 0, 255];
+    var size = width * height * depth * 4;
+
+    var buf = new Uint8Array(size);
+    for (var i = 0; i < size; i += 4) {
+        buf[i + 0] = 0;
+        buf[i + 1] = 255;
+        buf[i + 2] = 0;
+        buf[i + 3] = 255;
+    }
+
+    var program = wtu.setupProgram(gl, ["vshader", "fshader"], ['a_position', 'a_coord'], [0, 1]);
+    samplerLoc = gl.getUniformLocation(program, "u_sampler");
+
+    gl.viewport(0, 0, width, height);
+
+    gl.bindTexture(gl.TEXTURE_3D, texture);
+    gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, buf);
+    // texture is unbound from the default texture unit TEXTURE0,
+    // then a default black texture will be bound to TEXTURE0.
+    gl.bindTexture(gl.TEXTURE_3D, null);
+
+    // Active TEXTURE1 and 3d texture are necessary to reproduce the crash bug.
+    gl.activeTexture(gl.TEXTURE1);
+
+    gl.bindSampler(0, sampler);
+    gl.samplerParameteri(sampler, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+    gl.samplerParameteri(sampler, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+    gl.bindTexture(gl.TEXTURE_3D, texture);
+    gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+    gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+
+    // Render using sampler
+    // When rendering from texture unit 0, the black texture will be drawn.
+    render(0, width, height, black, "Result pixels rendering from TEXTURE0 should be black");
+
+    gl.bindSampler(0, null);
+    gl.deleteSampler(sampler);
+
+    // Render using texture
+    // When rendering from texture unit 0, the black texture will be drawn.
+    // Crash happens when calling gl.drawArrays during this rendering.
+    render(0, width, height, black, "Result pixels rendering from TEXTURE0 should be black");
+
+    gl.bindTexture(gl.TEXTURE_3D, null);
+    gl.deleteTexture(texture);
+    gl.deleteProgram(program);
+}
+
+if (!gl) {
+    testFailed("Fail to get a WebGL2 context");
+} else {
+    testPassed("Created WebGL2 context successfully");
+    activeTextureTest();
+}
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/angle-stuck-depth-textures.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/angle-stuck-depth-textures.html
new file mode 100644
index 0000000000..17cb0ac916
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/angle-stuck-depth-textures.html
@@ -0,0 +1,197 @@
+<!--
+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 Textures Misc Tests: "Stuck" Depth Textures</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>
+
+<script id="draw-vs" type="x-shader/x-vertex">#version 100
+attribute vec3 vertex;
+void main () {
+  gl_Position = vec4(vertex.x, vertex.y, vertex.z * 2.0 - 1.0, 1);
+}
+</script>
+<script id="draw-fs" type="x-shader/x-fragment">#version 100
+void main () {
+  gl_FragColor = vec4 (1.);
+}
+</script>
+
+<script id="blit-vs" type="x-shader/x-vertex">#version 100
+attribute vec2 vertex;
+varying vec2 position;
+void main () {
+  position = vertex * .5 + .5;
+  gl_Position = vec4(vertex, 0, 1);
+}
+</script>
+<script id="blit-fs" type="x-shader/x-fragment">#version 100
+precision mediump float;
+uniform sampler2D texture;
+varying vec2 position;
+void main () {
+  gl_FragColor = vec4 (texture2D (texture, position).rrr, 1.);
+}
+</script>
+
+</head>
+<body>
+<canvas id="example" width="128" height="128"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+
+<script>
+"use strict";
+
+description("This test covers an ANGLE bug where an AMD workaround would cause depth textures to stick. See http://anglebug.com/1664.");
+
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("example", undefined, 2);
+
+var WEBGL_depth_texture;
+
+var drawProgram, blitProgram, textureLoc;
+
+var quadVB;
+
+function drawQuad(depth) {
+  if (!quadVB) {
+    quadVB = gl.createBuffer()
+  }
+
+  var quadVerts = new Float32Array(3 * 6);
+  quadVerts[0] = -1.0; quadVerts[1] =   1.0; quadVerts[2] = depth;
+  quadVerts[3] = -1.0; quadVerts[4] =  -1.0; quadVerts[5] = depth;
+  quadVerts[6] =  1.0; quadVerts[7] =  -1.0; quadVerts[8] = depth;
+  quadVerts[9] = -1.0; quadVerts[10] =  1.0; quadVerts[11] = depth;
+  quadVerts[12] = 1.0; quadVerts[13] = -1.0; quadVerts[14] = depth;
+  quadVerts[15] = 1.0; quadVerts[16] =  1.0; quadVerts[17] = depth;
+
+  gl.bindBuffer(gl.ARRAY_BUFFER, quadVB);
+  gl.bufferData(gl.ARRAY_BUFFER, quadVerts, gl.STATIC_DRAW);
+  gl.vertexAttribPointer(0, 3, gl.FLOAT, gl.FALSE, 0, 0);
+  gl.enableVertexAttribArray(0);
+  gl.drawArrays(gl.TRIANGLES, 0, 6);
+
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after drawQuad");
+}
+
+// Test based on dEQP-GLES3.functional.blit.depth_stencil.depth_24_stencil8_stencil_only
+function run_test() {
+
+  var colorTex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, colorTex);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 128, 128, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+  gl.bindTexture(gl.TEXTURE_2D, null);
+
+  var depthTex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, depthTex);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_NEAREST);
+  var levels = Math.log2(128);
+  for (var mipLevel = 0; mipLevel <= levels; ++mipLevel)
+  {
+      var size = 128 >> mipLevel;
+      gl.texImage2D(gl.TEXTURE_2D, mipLevel, gl.DEPTH24_STENCIL8, size, size, 0, gl.DEPTH_STENCIL,
+                    gl.UNSIGNED_INT_24_8, null);
+  }
+  gl.bindTexture(gl.TEXTURE_2D, null);
+
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after init textures");
+
+  var framebuffer = gl.createFramebuffer();
+  gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
+
+  gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, colorTex, 0);
+  gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.TEXTURE_2D, depthTex, 0);
+
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after init framebuffer");
+
+  gl.depthRange(0.0, 1.0);
+  gl.viewport(0, 0, 128, 128);
+  gl.clearColor(0, 0, 0, 1);
+
+  // Draw loop.
+  for (var frame = 0; frame < 4; ++frame)
+  {
+      // draw into FBO
+      gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
+      gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT);
+
+      gl.enable(gl.DEPTH_TEST);
+
+      gl.useProgram(drawProgram);
+      if (frame % 2 != 0) {
+        drawQuad(0.0);
+      } else {
+        drawQuad(1.0);
+      }
+
+      gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+
+      // blit FBO
+      gl.disable(gl.DEPTH_TEST);
+
+      gl.useProgram(blitProgram);
+      gl.uniform1i(textureLoc, 0);
+      gl.bindTexture(gl.TEXTURE_2D, depthTex);
+
+      drawQuad(0.5);
+
+      if (frame % 2 != 0) {
+        wtu.checkCanvasRect(gl, 0, 0, 128, 128, [0, 0, 0, 255],
+                            "depth texture should be black on odd iterations");
+
+      } else {
+        wtu.checkCanvasRect(gl, 0, 0, 128, 128, [255, 255, 255, 255],
+                            "depth texture should be white on even iterations");
+      }
+
+      wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after draw");
+  }
+
+  gl.deleteTexture(colorTex);
+  gl.deleteTexture(depthTex);
+  gl.deleteFramebuffer(framebuffer);
+}
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+
+    drawProgram = wtu.setupProgram(gl, ["draw-vs", "draw-fs"], ["vertex"]);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after draw program initialization");
+    shouldBe('gl.getProgramParameter(drawProgram, gl.LINK_STATUS)', 'true');
+
+    blitProgram = wtu.setupProgram(gl, ["blit-vs", "blit-fs"], ["vertex"]);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after blit program initialization");
+    shouldBe('gl.getProgramParameter(blitProgram, gl.LINK_STATUS)', 'true');
+
+    textureLoc = gl.getUniformLocation(blitProgram, "texture")
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "query texture location");
+    shouldBeNonNull('textureLoc')
+
+    run_test();
+}
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html
new file mode 100644
index 0000000000..5c81552793
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html
@@ -0,0 +1,73 @@
+<!--
+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">
+<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="c" width="16" height="16"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description('Tests canvas remains unchanged after it is used in webgl texutre');
+
+debug("This is a regression test for <a href='https://bugs.chromium.org/p/chromium/issues/detail?id=446380'>Chromium Issue 446380</a>");
+debug("");
+
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("c", undefined, 2);
+
+function checkSourceCanvasImageData(imageDataBefore, imageDataAfter) {
+  if (imageDataBefore.length != imageDataAfter.length) {
+    testFailed("The size of image data in source canvas become different after it is used in webgl texture.");
+    return;
+  }
+  for (var i = 0; i < imageDataAfter.length; i++) {
+    if (imageDataBefore[i] != imageDataAfter[i]) {
+      testFailed("Pixel values in source canvas have changed after canvas used in webgl texture.");
+      return;
+    }
+  }
+  testPassed("Pixel values in source canvas remain unchanged after canvas used in webgl texture.");
+}
+
+function runTest(width, height) {
+  var canvas = document.createElement("canvas");
+  canvas.width = width;
+  canvas.height = height;
+  var ctx = canvas.getContext("2d");
+  ctx.fillStyle = "rgba(1, 63, 127, 1)";
+  ctx.fillRect(0, 0, canvas.width, canvas.height);
+  var refCanvas = document.createElement("canvas");
+  refCanvas.width = width;
+  refCanvas.height = height;
+  var refCtx = refCanvas.getContext("2d");
+  refCtx.fillStyle = "rgba(1, 63, 127, 1)";
+  refCtx.fillRect(0, 0, canvas.width, canvas.height);
+  // A refCanvas with same data as canvas is used to get original image data, since
+  // getImageData may change hardware accelerated status of canvas and we don't want to
+  // omit testing for hardware accelerated canvas.
+  var imageDataBefore = refCtx.getImageData(0, 0, refCanvas.width, refCanvas.height);
+  var tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "TexImage2D should succeed");
+  checkSourceCanvasImageData(imageDataBefore, ctx.getImageData(0, 0, canvas.width, canvas.height));
+  gl.deleteTexture(tex);
+}
+
+runTest(2, 2);
+runTest(257, 257);
+
+finishTest();
+</script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/compressed-tex-from-pbo-crash.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/compressed-tex-from-pbo-crash.html
new file mode 100644
index 0000000000..74444d32fb
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/compressed-tex-from-pbo-crash.html
@@ -0,0 +1,44 @@
+<!--
+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>Regression test for compressedTex with PBO</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="example" width="24" height="24"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+
+var wtu = WebGLTestUtils;
+description();
+
+var gl = wtu.create3DContext("example", undefined, 2);
+
+var tex = gl.createTexture();
+gl.bindTexture(gl.TEXTURE_2D, tex);
+
+// The following statement caused a crash in Chrome. See crbug.com/690335.
+// Because no PBO is bound, the last parameter is interprected as a pointer
+// to the client side data.
+gl.compressedTexImage2D(gl.TEXTURE_2D, 0, 0, 4, 4, 0, 8, 3);
+
+wtu.glErrorShouldBe(gl, [gl.INVALID_ENUM, gl.INVALID_VALUE, gl.INVALID_OPERATION],
+    "should not crash and generate a GL error");
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/compressed-tex-image.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/compressed-tex-image.html
new file mode 100644
index 0000000000..818d6e8dff
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/compressed-tex-image.html
@@ -0,0 +1,24 @@
+<!--
+Copyright (c) 2020 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">
+<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>
+<script>
+const contextVersion = 2;
+</script>
+<script src="../../../js/tests/compressed-tex-image.js"></script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-cube-map-AMD-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-cube-map-AMD-bug.html
new file mode 100644
index 0000000000..008ac88459
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-cube-map-AMD-bug.html
@@ -0,0 +1,104 @@
+<!--
+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 copy into cube map texture conformance test</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";
+var wtu = WebGLTestUtils;
+var gl;
+
+function runTest() {
+  var width = 16;
+  var height = 16;
+  var level = 0;
+  var cases = [
+    {
+      internalformat: "RGBA8",
+      format: "RGBA",
+      type: "UNSIGNED_BYTE",
+      data: new Uint8Array(width * height * 4)
+    },
+    {
+      internalformat: "RGBA8I",
+      format: "RGBA_INTEGER",
+      type: "BYTE",
+      data: new Int8Array(width * height * 4)
+    },
+    {
+      internalformat: "RGBA8UI",
+      format: "RGBA_INTEGER",
+      type: "UNSIGNED_BYTE",
+      data: new Uint8Array(width * height * 4)
+    }
+  ];
+  if (gl.getExtension("EXT_color_buffer_float")) {
+      cases.push({
+          internalformat: "RGBA32F",
+          format: "RGBA",
+          type: "FLOAT",
+          data: new Float32Array(width * height * 4)
+      });
+  }
+  cases.forEach(function(testcase) {
+    debug("");
+    debug("Testing internalformat: " + testcase.internalformat);
+
+    var internalformat = gl[testcase.internalformat];
+    var format = gl[testcase.format];
+    var type = gl[testcase.type];
+    var texture = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, texture);
+    var data = testcase.data;
+    gl.texImage2D(gl.TEXTURE_2D, level, internalformat, width, height, 0, format, type, data);
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, level);
+    shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE");
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Setup framebuffer with texture should succeed.");
+
+    var cubeTexture = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_CUBE_MAP, cubeTexture);
+
+    for (var face = gl.TEXTURE_CUBE_MAP_POSITIVE_X; face < gl.TEXTURE_CUBE_MAP_POSITIVE_X + 6; face++) {
+      gl.copyTexImage2D(face, level, internalformat, 0, 0, width, height, 0);
+      wtu.glErrorShouldBe(gl, gl.NO_ERROR, "CopyTexImage2D should succeed.");
+      gl.copyTexSubImage2D(face, level, 0, 0, 0, 0, width, height);
+      wtu.glErrorShouldBe(gl, gl.NO_ERROR, "CopyTexSubImage2D should succeed.");
+    }
+
+    gl.deleteTexture(cubeTexture);
+    gl.deleteTexture(texture);
+    gl.deleteFramebuffer(fbo);
+  });
+}
+
+description();
+debug("This is a regression test for <a href='https://bugs.chromium.org/p/chromium/issues/detail?id=712117'>Chromium Issue 712117</a>");
+
+var canvas = document.getElementById("canvas");
+shouldBeNonNull("gl = wtu.create3DContext(canvas, undefined, 2)");
+
+runTest();
+
+var successfullyParsed = true;
+
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-cube-map-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-cube-map-bug.html
new file mode 100644
index 0000000000..77a811cdaa
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-cube-map-bug.html
@@ -0,0 +1,49 @@
+<!--
+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 copy into cube map texture bug conformance test</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="1024" height="1024"></canvas>
+<script>
+"use strict";
+var wtu = WebGLTestUtils;
+var gl;
+
+function runTest() {
+  var buffer = gl.createBuffer();
+  gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer);
+  gl.pixelStorei(gl.UNPACK_ROW_LENGTH,5);
+
+  var texture = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_CUBE_MAP, texture);
+  gl.copyTexImage2D(gl.TEXTURE_CUBE_MAP_NEGATIVE_Z, 5, gl.RGBA, 75, 10, 2, 2, 0);
+  // Note that this bug only manifest with Chrome ASAN build on MacOSX with Intel drivers.
+  // At this point ASAN build will crash inside Intel driver code.
+  testPassed("Chrome ASAN build on MacOSX with Intel driver should have crashed at this point with this bug");
+}
+
+description();
+debug("This is a regression test for <a href='https://bugs.chromium.org/p/chromium/issues/detail?id=892282'>Chromium Issue 892282</a>");
+
+var canvas = document.getElementById("canvas");
+shouldBeNonNull("gl = wtu.create3DContext(canvas, undefined, 2)");
+
+runTest();
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-luma-format.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-luma-format.html
new file mode 100644
index 0000000000..249716deda
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-luma-format.html
@@ -0,0 +1,165 @@
+<!--
+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 CopyTexSubImage Tests</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>
+<canvas id="canvas" width="64px" height="32px"> </canvas>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">#version 300 es
+in highp vec4 a_position;
+in highp vec2 a_coord;
+out highp vec2 v_coord;
+void main(void) {
+    gl_Position = a_position;
+    v_coord = a_coord;
+}
+</script>
+<script id="fshader_luminance_alpha" type="x-shader/x-fragment">#version 300 es
+in highp vec2 v_coord;
+uniform highp sampler3D u_sampler0;
+out highp vec4 o_color0;
+void main (void) {
+    o_color0 = vec4(texture(u_sampler0,vec3(v_coord, 0)));
+}
+</script>
+<script>
+"use strict";
+description("This test verifies the behavior of copTexSubImage3D with luminance textures.");
+debug("");
+
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("canvas");
+var gl = wtu.create3DContext(canvas, null, 2);
+
+function copytexsubimage3D_luma_format() {
+
+    var testGroup = [
+        {
+            name: '3d_alpha',
+            format: gl.ALPHA,
+            width: 64,
+            height: 32,
+            depth: 2
+        },
+        {
+            name: '3d_luminance',
+            format: gl.LUMINANCE,
+            width: 64,
+            height: 32,
+            depth: 2
+        },
+        {
+            name: '3d_luminance_alpha',
+            format: gl.LUMINANCE_ALPHA,
+            width: 64,
+            height: 32,
+            depth: 2
+        }
+    ];
+
+    testGroup.forEach(function(testcase) {
+        debug("");
+        debug("Testing copytexsubimage3d_luma_format_" + testcase.name);
+
+        var texture = [];
+        texture[0] = gl.createTexture();
+        texture[1] = gl.createTexture();
+        var layer = 0;
+        var width = testcase.width;
+        var height = testcase.height;
+        var depth = testcase.depth;
+        var msg;
+        var uint1 = new Uint8Array(width * height * 4);
+        for (var i = 0; i < uint1.length - 1; ++i) {
+            uint1[i + 1] = (uint1[i] + 10) % 255;
+        }
+
+        gl.bindTexture(gl.TEXTURE_2D, texture[0]);
+        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, uint1);
+        var fbo = gl.createFramebuffer();
+        gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+        gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture[0], 0);
+
+        if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
+            gl.bindTexture(gl.TEXTURE_3D, texture[1]);
+            setUpTexStatus();
+            gl.texImage3D(gl.TEXTURE_3D, 0, testcase.format, width, height, depth, 0, testcase.format, gl.UNSIGNED_BYTE, null);
+            gl.copyTexSubImage3D(gl.TEXTURE_3D, 0, 0, 0, layer, 0, 0,width, height);
+            gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+
+            var program = wtu.setupProgram(gl, ["vshader", "fshader_luminance_alpha"], ["a_position", "a_coord"]);
+            wtu.setupUnitQuad(gl, 0, 1);
+            wtu.drawUnitQuad(gl);
+
+            for (var y = 0; y < height; ++y) {
+                for (var x = 0; x < width; ++x) {
+                    var cur = y * width * 4 + x * 4;
+                    if (testcase.format == gl.ALPHA) {
+                        wtu.checkCanvasRect(gl, x, y, 1, 1, [ 0, 0,
+                        0, uint1[cur + 3]], msg, [1, 1, 1, 1]);
+                    } else if (testcase.format == gl.LUMINANCE) {
+                        wtu.checkCanvasRect(gl, x, y, 1, 1, [uint1[cur], uint1[cur],
+                        uint1[cur], 255], msg, [1, 1, 1, 1]);
+                    } else { // gl.LUMINANCE_ALPHA
+                        wtu.checkCanvasRect(gl, x, y, 1, 1, [uint1[cur], uint1[cur],
+                        uint1[cur], uint1[cur + 3]], msg, [1, 1, 1, 1]);
+                    }
+                }
+            }
+        } else {
+            testFailed("framebuffer not complete");
+        }
+
+        gl.bindTexture(gl.TEXTURE_3D, null);
+        gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+        gl.deleteFramebuffer(fbo);
+        gl.deleteTexture(texture[0]);
+        gl.deleteTexture(texture[1]);
+        gl.deleteProgram(program);
+    });
+}
+
+function setUpTexStatus() {
+    gl.texParameteri(
+        gl.TEXTURE_3D, gl.TEXTURE_MIN_FILTER, gl.NEAREST
+    );
+    gl.texParameteri(
+        gl.TEXTURE_3D, gl.TEXTURE_MAG_FILTER, gl.NEAREST
+    );
+    gl.texParameteri(
+        gl.TEXTURE_3D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE
+    );
+    gl.texParameteri(
+        gl.TEXTURE_3D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE
+    );
+    gl.texParameteri(
+        gl.TEXTURE_3D, gl.TEXTURE_WRAP_R, gl.CLAMP_TO_EDGE
+    );
+}
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+    copytexsubimage3D_luma_format();
+}
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-same-texture.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-same-texture.html
new file mode 100644
index 0000000000..c247cabc48
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-same-texture.html
@@ -0,0 +1,144 @@
+<!--
+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 CopyTexImage from/to the same texture Tests</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="example" width="64" height="64"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+
+var wtu = WebGLTestUtils;
+// https://bugs.chromium.org/p/chromium/issues/detail?id=797235
+description("This test verifies CopyTexImage2D works if source/destination images belong to the same texture");
+debug("");
+
+var gl = wtu.create3DContext("example", undefined, 2);
+
+function enumToString(value) {
+    return wtu.glEnumToString(gl, value);
+}
+
+function checkFramebuffer(expected) {
+    var actual = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
+    if (expected.indexOf(actual) < 0) {
+        var msg = "checkFramebufferStatus expects [";
+        for (var index = 0; index < expected.length; ++index) {
+            msg += wtu.glEnumToString(gl, expected[index]);
+            if (index + 1 < expected.length)
+                msg += ", ";
+        }
+        msg += "], was " + wtu.glEnumToString(gl, actual);
+        testFailed(msg);
+    } else {
+        var msg = "checkFramebufferStatus got " + wtu.glEnumToString(gl, actual) +
+                  " as expected";
+        testPassed(msg);
+    }
+}
+
+function checkTextureLevelColor(texture, level, level_width, level_height, x, y, width, height, color) {
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    var color_renderable_tex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, color_renderable_tex);
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, level_width, level_height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, color_renderable_tex, 0);
+    checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
+
+    var program = wtu.setupTexturedQuad(gl);
+    gl.bindTexture(gl.TEXTURE_2D, texture);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, level);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAX_LEVEL, level);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
+    wtu.clearAndDrawUnitQuad(gl);
+    wtu.checkCanvasRect(gl, x, y, width, height, color);
+
+    gl.deleteTexture(color_renderable_tex);
+    gl.deleteFramebuffer(fbo);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Check texture level color should generate no GL errors.");
+}
+
+function testChangeTargetTextureLevelSize() {
+    debug("");
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+
+    var texture = gl.createTexture();
+    wtu.fillTexture(gl, texture, 64, 64, [255, 0, 0, 255], 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.RGBA8);
+    gl.generateMipmap(gl.TEXTURE_2D);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 1);
+    checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
+
+    // fbo source texture is |texture| level 1, 32x32. Target is |texture| level 2, 64x64.
+    // Only one quarter of the target 64x64 will come from the source.
+    // Implementations may insert internal commands before copying over 32x32 in order to
+    // initialize undefined three quarters to 0 as WebGL spec requires. This will actually create
+    // a 64x64 image at level 2 and make the fbo incomplete, thus, the copying will fail.
+    gl.copyTexImage2D(gl.TEXTURE_2D, 2, gl.RGBA8, 0, 0, 64, 64, 0);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "copyTexImage2D should succeed.");
+    checkFramebuffer([gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT]);
+
+    checkTextureLevelColor(texture, 2, 64, 64, 0, 0, 32, 32, [255, 0, 0, 255]);
+    checkTextureLevelColor(texture, 2, 64, 64, 0, 32, 64, 32, [0, 0, 0, 0]);
+    checkTextureLevelColor(texture, 2, 64, 64, 32, 32, 32, 32, [0, 0, 0, 0]);
+
+    gl.deleteFramebuffer(fbo);
+    gl.deleteTexture(texture);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Test should generate no GL errors.");
+}
+
+function testChangeTargetTextureLevelFormat() {
+    debug("");
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+
+    var texture = gl.createTexture();
+    wtu.fillTexture(gl, texture, 64, 64, [255, 0, 0, 255], 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.RGBA8);
+    gl.generateMipmap(gl.TEXTURE_2D);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 1);
+    checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
+
+    // Using LUNIMANCE_ALPHA format may trigger implementations' emulation code path
+    // on desktop core profile GL, which might change level 2 image definition first
+    // and make the fbo incomplete, thus, the actual copying will fail.
+    gl.copyTexImage2D(gl.TEXTURE_2D, 2, gl.LUMINANCE_ALPHA, 0, 0, 16, 16, 0);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "copyTexImage2D should succeed.");
+    checkFramebuffer([gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT]);
+
+    checkTextureLevelColor(texture, 2, 16, 16, 0, 0, 16, 16, [255, 255, 255, 255]);
+
+    gl.deleteFramebuffer(fbo);
+    gl.deleteTexture(texture);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Test should generate no GL errors.");
+}
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+    testChangeTargetTextureLevelSize();
+    testChangeTargetTextureLevelFormat();
+}
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-webgl-specific.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-webgl-specific.html
new file mode 100644
index 0000000000..ae969e0795
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image-webgl-specific.html
@@ -0,0 +1,303 @@
+<!--
+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 CopyTexImage Tests</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="example" width="2" height="2"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+
+var wtu = WebGLTestUtils;
+description("This test verifies the functionality of copyTexImage.");
+
+var gl = wtu.create3DContext("example", undefined, 2);
+
+function copytexsubimage3d_invalid_operation_feedbackloops() {
+    debug("");
+    debug("Testing copytexsubimage3d_invalid_operation_feedbackloops");
+    var texture = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_3D, texture);
+    var uint8 = new Uint8Array(32);
+    var layer = 0;
+    var width = 2;
+    var height = 2;
+    var depth = 2;
+    gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, uint8);
+
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture, 0, layer);
+    if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
+        gl.copyTexSubImage3D(gl.TEXTURE_3D, 0, 0, 0, layer, 0, 0, width, height);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "gl.INVALID_OPERATION is generated");
+    } else {
+        testFailed("framebuffer not complete");
+    }
+
+    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+    gl.deleteFramebuffer(fbo);
+    gl.deleteTexture(texture);
+};
+
+function copytexsubimage3d_valid_operation_diff_level() {
+    debug("");
+    debug("Testing copytexsubimage3d_valid_operation_diff_level");
+    var texture = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_3D, texture);
+    var uint8 = new Uint8Array(32);
+    var level1 = 0;
+    var level2 = 1;
+    var width = 2;
+    var height = 2;
+    var depth = 2;
+    gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, uint8);
+    gl.generateMipmap(gl.TEXTURE_3D);
+
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture, level1, 0);
+    if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
+        gl.copyTexSubImage3D(gl.TEXTURE_3D, level2, 0, 0, 0, 0, 0, width/2, height/2);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D should succeed.");
+    } else {
+        testFailed("framebuffer not complete");
+    }
+
+    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+    gl.deleteFramebuffer(fbo);
+    gl.deleteTexture(texture);
+};
+
+function copytexsubimage3d_valid_operation_diff_layer() {
+    debug("");
+    debug("Testing copytexsubimage3d_valid_operation_diff_layer");
+    var texture = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_3D, texture);
+    var uint8 = new Uint8Array(32);
+    var layer1 = 0;
+    var layer2 = 1;
+    var width = 2;
+    var height = 2;
+    var depth = 2;
+    gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, uint8);
+
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture, 0, layer1);
+    if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
+        gl.copyTexSubImage3D(gl.TEXTURE_3D, 0, 0, 0, layer2, 0, 0, width, height);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D should succeed.");
+    } else {
+        testFailed("framebuffer not complete");
+    }
+
+    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+    gl.deleteFramebuffer(fbo);
+    gl.deleteTexture(texture);
+}
+
+function copytexsubimage3d_texture_wrongly_initialized() {
+    debug("");
+    debug("Testing copytexsubimage3d_texture_wrongly_initialized");
+    var texture = [];
+    texture[0] = gl.createTexture();
+    texture[1] = gl.createTexture();
+    var layer = 0;
+    var width = 2;
+    var height = 2;
+    var depth = 2;
+    gl.bindTexture(gl.TEXTURE_2D, texture[0]);
+    var uint = new Uint8Array([0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10]);
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, uint);
+
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture[0], 0);
+    if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
+        gl.bindTexture(gl.TEXTURE_3D, texture[1]);
+        gl.texStorage3D(gl.TEXTURE_3D, 1, gl.RGBA8, width, height, depth);
+        gl.copyTexSubImage3D(gl.TEXTURE_3D, 0, 0, 0, layer, 0, 0, width, height);
+        gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture[1], 0, layer);
+        var bytes = new Uint8Array(width * height * 4);
+        gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, bytes);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "readpixel should succeed.");
+        for (var x = 0; x < width * height * 4; x++) {
+            if (bytes[x] != uint[x]) {
+                testFailed("byte comparison failure, byte at "+ x + " was " + bytes[x] +
+                ", should be " + uint[x]);
+                break;
+            }
+        }
+    } else {
+        testFailed("framebuffer not complete");
+    }
+
+    gl.bindTexture(gl.TEXTURE_2D, null);
+    gl.bindTexture(gl.TEXTURE_3D, null);
+    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+    gl.deleteFramebuffer(fbo);
+    gl.deleteTexture(texture[0]);
+    gl.deleteTexture(texture[1]);
+};
+
+function copytexsubimage3d_out_of_bounds_test_helper(xx, yy, copyWidth, copyHeight) {
+    var texture = [];
+    texture[0] = gl.createTexture();
+    texture[1] = gl.createTexture();
+    var layer = 0;
+    var width = 2;
+    var height = 2;
+    var depth = 2;
+    var width2 = 4;
+    var height2 = 4;
+    var xoffset = 0;
+    var yoffset = 0;
+    var uint = new Uint8Array(width * height * 4);
+    for (var i = 0; i < uint.length; i++) {
+        uint[i] = 0x01;
+    }
+    var uint2 = new Uint8Array(width2 * height2 * depth * 4);
+    for (var i = 0; i < uint2.length; i++) {
+        uint2[i] = 0xFF;
+    }
+
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+
+    gl.bindTexture(gl.TEXTURE_2D, texture[0]);
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, uint);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture[0], 0);
+    if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
+        gl.bindTexture(gl.TEXTURE_3D, texture[1]);
+        gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA, width2, height2, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, uint2);
+        gl.copyTexSubImage3D(gl.TEXTURE_3D, 0, xoffset, yoffset, layer, xx, yy, copyWidth, copyHeight);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "using copyTexSubImage3D: x = " + xx + ", y = " + yy + " width = " + copyWidth + ", height = " + copyHeight);
+
+        gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture[1], 0, layer);
+        var bytes = new Uint8Array(width2 * height2 * 4);
+        gl.readPixels(0, 0, width2, height2, gl.RGBA, gl.UNSIGNED_BYTE, bytes);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "readpixel should succeed.");
+
+        var sourceX = new Object();
+        var sourceY = new Object();
+        Clip(xx, copyWidth, width, sourceX);
+        Clip(yy, copyHeight, height, sourceY);
+        var destX = sourceX.start - xx + xoffset;
+        var rangeX = sourceX.range;
+        var destY = sourceY.start - yy + yoffset;
+        var rangeY = sourceY.range;
+        for (var y = 0; y < height2; y++) {
+            for (var x = 0; x < width2 * 4; x++) {
+                var current = y * height2 * 4 + x;
+                // pixels copied from read framebuffer should be 0x01
+                if (x >= destX * 4 && x < (destX + rangeX) * 4 && y >= destY && y < destY + rangeY) {
+                    if (bytes[current] != 0x01) {
+                        testFailed("byte comparison failure, byte at "+ (current) + " was " +
+                        bytes[current] +", should be 1");
+                        break;
+                     }
+                // pixels out-of-bounds should be untouched
+                } else {
+                    if (bytes[current] != 0xFF) {
+                        testFailed("byte comparison failure, byte at "+ (current) + " was " +
+                        bytes[current] + ", should be 255");
+                        break;
+                    }
+                }
+            }
+            // Test failed; abort
+            if (x < width2 * 4) {
+                break;
+            }
+        }
+    } else {
+        testFailed("framebuffer not complete");
+    }
+
+    gl.bindTexture(gl.TEXTURE_2D, null);
+    gl.bindTexture(gl.TEXTURE_3D, null);
+    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+    gl.deleteFramebuffer(fbo);
+    gl.deleteTexture(texture[0]);
+    gl.deleteTexture(texture[1]);
+}
+
+function copytexsubimage3d_out_of_bounds() {
+    debug("");
+    debug("Test pixels outside of read framebuffer for CopyTexSubImage3D");
+
+    for(var i=0; i < testlist.length; i++) {
+        copytexsubimage3d_out_of_bounds_test_helper(testlist[i][0], testlist[i][1], testlist[i][2], testlist[i][3]);
+    }
+};
+
+/**
+ * This array defines some copy areas for CopyTexSubImage3D.
+ * A copy area is defined by x coordinate, y coordinate, copyWidth and copyHeight.
+ * the source read framebuffer is (0, 0, 2, 2).
+ */
+var testlist = [
+    [-1, -1, 4, 4],
+
+    [0, 0, 3, 3],
+    [-1, -1, 3, 3],
+    [-1, 0, 3, 3],
+    [0, -1, 3, 3],
+
+    [0, 0, 2, 3],
+    [0, 0, 3, 2],
+    [-1, 0, 3, 2],
+    [0, -1, 2, 3],
+
+    [-2, -2, 3, 3],
+    [-2, 1, 3, 3],
+    [1, -2, 3, 3],
+    [1, 1, 3, 3],
+
+    [2 , 2 ,3, 3]
+];
+
+
+function Clip(start, range, sourceRange, target) {
+    if (start < 0) {
+        range += start;
+        start = 0;
+    }
+    var end = start + range;
+    if(end > sourceRange) {
+        range -= end - sourceRange;
+    }
+    target.start = start;
+    target.range = range;
+}
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+    copytexsubimage3d_invalid_operation_feedbackloops();
+    copytexsubimage3d_valid_operation_diff_level();
+    copytexsubimage3d_valid_operation_diff_layer();
+    copytexsubimage3d_texture_wrongly_initialized();
+    copytexsubimage3d_out_of_bounds();
+}
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image.html
new file mode 100644
index 0000000000..3ffdf0a94f
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/copy-texture-image.html
@@ -0,0 +1,249 @@
+<!--
+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 CopyTexImage Tests</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="example" width="64" height="64"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+
+var wtu = WebGLTestUtils;
+description("This test verifies the functionality of copyTexImage2D.");
+debug("");
+
+var gl = wtu.create3DContext("example", undefined, 2);
+
+function enumToString(value) {
+    return wtu.glEnumToString(gl, value);
+}
+
+function checkFramebuffer(expected) {
+    var actual = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
+    if (expected.indexOf(actual) < 0) {
+        var msg = "checkFramebufferStatus expects [";
+        for (var index = 0; index < expected.length; ++index) {
+            msg += wtu.glEnumToString(gl, expected[index]);
+            if (index + 1 < expected.length)
+                msg += ", ";
+        }
+        msg += "], was " + wtu.glEnumToString(gl, actual);
+        testFailed(msg);
+    } else {
+        var msg = "checkFramebufferStatus got " + wtu.glEnumToString(gl, actual) +
+                  " as expected";
+        testPassed(msg);
+    }
+}
+
+var testInternalformat = function () {
+    var goodUnormFormats = [
+        "RGB",
+        "RGBA",
+        "LUMINANCE_ALPHA",
+        "LUMINANCE",
+        "ALPHA",
+        "R8",
+        "RG8",
+        "RGB8",
+        "RGBA8",
+    ];
+    var goodUnormFormatsWithUnmatchedComponentSizes = [
+        "RGB565",
+        "RGBA4",
+        "RGB5_A1",
+        "RGB10_A2",
+    ];
+    var goodSRGBFormats = [
+        "SRGB8",
+        "SRGB8_ALPHA8",
+    ];
+    var goodIntFormats = [
+        "R32I",
+        "RG32I",
+        "RGB32I",
+        "RGBA32I",
+    ];
+    var goodIntFormatsWithUnmatchedComponentSizes = [
+        "R8I",
+        "R16I",
+        "RG8I",
+        "RG16I",
+        "RGB8I",
+        "RGB16I",
+        "RGBA8I",
+        "RGBA16I",
+    ];
+    var goodUnsignedIntFormats = [
+        "R32UI",
+        "RG32UI",
+        "RGB32UI",
+        "RGBA32UI",
+    ];
+    var goodUnsignedIntFormatsWithUnmatchedComponentSizes = [
+        "R8UI",
+        "R16UI",
+        "RG8UI",
+        "RG16UI",
+        "RGB10_A2UI",
+        "RGB8UI",
+        "RGB16UI",
+        "RGBA8UI",
+        "RGBA16UI",
+    ];
+    const snormFormats = [
+        "R8_SNORM",
+        "RG8_SNORM",
+        "RGB8_SNORM",
+        "RGBA8_SNORM",
+    ];
+    const float16Formats = [
+        "R16F",
+        "RG16F",
+        "RGB16F",
+        "RGBA16F",
+    ];
+    const float32Formats = [
+        "R32F",
+        "RG32F",
+        "RGB32F",
+        "RGBA32F",
+    ];
+    const float11Formats = [
+        "R11F_G11F_B10F",
+    ];
+    const depthAndOrStencilFormats = [
+        "DEPTH_COMPONENT16",
+        "DEPTH_COMPONENT24",
+        "DEPTH_COMPONENT32F",
+        "DEPTH24_STENCIL8",
+    ];
+
+    var texture = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, texture);
+
+    function testFormat(internalformat, srcTexFormatsTypes, fboAttachmentType, expected, msg) {
+        var fbo = gl.createFramebuffer();
+        var srcTexture = gl.createTexture();
+        gl.bindTexture(gl.TEXTURE_2D, srcTexture);
+        gl.texImage2D(gl.TEXTURE_2D, 0, gl[srcTexFormatsTypes.internalformat], 64, 64, 0, srcTexFormatsTypes.format, srcTexFormatsTypes.type, null);
+        gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+        gl.framebufferTexture2D(gl.FRAMEBUFFER, fboAttachmentType, gl.TEXTURE_2D, srcTexture, 0);
+        checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
+
+        gl.bindTexture(gl.TEXTURE_2D, texture);
+        gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl[internalformat], 0, 0, 64, 64, 0);
+        wtu.glErrorShouldBe(gl, expected, msg + srcTexFormatsTypes.internalformat + '=>' + internalformat);
+
+        gl.deleteTexture(srcTexture);
+        gl.deleteFramebuffer(fbo);
+    }
+
+    goodUnormFormats.forEach(function(internalformat) {
+        var srcTexFormatsTypes = { internalformat: "RGBA", format: gl.RGBA, type: gl.UNSIGNED_BYTE };
+        testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.NO_ERROR, "copyTexImage2D should succeed for good internalformat ");
+        srcTexFormatsTypes = { internalformat: "RGBA8", format: gl.RGBA, type: gl.UNSIGNED_BYTE };
+        testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.NO_ERROR, "copyTexImage2D should succeed for good internalformat ");
+    });
+    goodUnormFormatsWithUnmatchedComponentSizes.forEach(function(internalformat) {
+        var srcTexFormatsTypes = { internalformat: "RGBA8", format: gl.RGBA, type: gl.UNSIGNED_BYTE };
+        testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.INVALID_OPERATION,
+                   "copyTexImage2D should fail for good internalformat with unmatched component sizes  ");
+    });
+
+    goodSRGBFormats.forEach(function(internalformat) {
+        var srcTexFormatsTypes = { internalformat: "SRGB8_ALPHA8", format: gl.RGBA, type: gl.UNSIGNED_BYTE };
+        testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.NO_ERROR, "copyTexImage2D should succeed for good internalformat ");
+    });
+
+    goodIntFormats.forEach(function(internalformat) {
+        var srcTexFormatsTypes = { internalformat: "RGBA32I", format: gl.RGBA_INTEGER, type: gl.INT };
+        testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.NO_ERROR, "copyTexImage2D should succeed for good internalformat ");
+    });
+    goodIntFormatsWithUnmatchedComponentSizes.forEach(function(internalformat) {
+        var srcTexFormatsTypes = { internalformat: "RGBA32I", format: gl.RGBA_INTEGER, type: gl.INT };
+        testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.INVALID_OPERATION,
+                   "copyTexImage2D should fail for good internalformat with unmatched component sizes ");
+    });
+
+    goodUnsignedIntFormats.forEach(function(internalformat) {
+        var srcTexFormatsTypes = { internalformat: "RGBA32UI", format: gl.RGBA_INTEGER, type: gl.UNSIGNED_INT };
+        testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.NO_ERROR, "copyTexImage2D should succeed for good internalformat ");
+    });
+    goodUnsignedIntFormatsWithUnmatchedComponentSizes.forEach(function(internalformat) {
+        var srcTexFormatsTypes = { internalformat: "RGBA32UI", format: gl.RGBA_INTEGER, type: gl.UNSIGNED_INT };
+        testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.INVALID_OPERATION,
+                   "copyTexImage2D should fail for good internalformat with unmatched component sizes ");
+    });
+
+    snormFormats.forEach(function(internalformat) {
+        const srcTexFormatsTypes = { internalformat: "RGBA8", format: gl.RGBA, type: gl.UNSIGNED_BYTE };
+        testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, [gl.INVALID_ENUM, gl.INVALID_OPERATION], "copyTexImage2D should fail for snorm internalformat ");
+    });
+
+    if (gl.getExtension("EXT_color_buffer_float")) {
+        float16Formats.forEach(function(internalformat) {
+            var srcTexFormatsTypes = { internalformat: "RGBA16F", format: gl.RGBA, type: gl.FLOAT };
+            testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.NO_ERROR, "copyTexImage2D should succeed for float16 internalformat ");
+        });
+        float32Formats.forEach(function(internalformat) {
+            var srcTexFormatsTypes = { internalformat: "RGBA32F", format: gl.RGBA, type: gl.FLOAT };
+            testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.NO_ERROR, "copyTexImage2D should succeed for float32 internalformat ");
+        });
+        float11Formats.forEach(function(internalformat) {
+            var srcTexFormatsTypes = { internalformat: "R11F_G11F_B10F", format: gl.RGB, type: gl.FLOAT };
+            testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.NO_ERROR, "copyTexImage2D should succeed for R11F_G11F_B10F internalformat ");
+        });
+
+        float32Formats.concat(float11Formats).forEach(function(internalformat) {
+            var srcTexFormatsTypes = { internalformat: "RGBA16F", format: gl.RGBA, type: gl.FLOAT };
+            testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.INVALID_OPERATION,
+                       "copyTexImage2D should fail for non-float16 internalformat (unmatched component sizes) ");
+        });
+        float16Formats.concat(float11Formats).forEach(function(internalformat) {
+            var srcTexFormatsTypes = { internalformat: "RGBA32F", format: gl.RGBA, type: gl.FLOAT };
+            testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.INVALID_OPERATION,
+                       "copyTexImage2D should fail for non-float32 internalformat (unmatched component sizes) ");
+        });
+        float16Formats.concat(float32Formats).forEach(function(internalformat) {
+            var srcTexFormatsTypes = { internalformat: "R11F_G11F_B10F", format: gl.RGB, type: gl.FLOAT };
+            testFormat(internalformat, srcTexFormatsTypes, gl.COLOR_ATTACHMENT0, gl.INVALID_OPERATION,
+                       "copyTexImage2D should fail for non-R11F_G11F_B10F internalformat (unmatched component sizes) ");
+        });
+    }
+
+    depthAndOrStencilFormats.forEach(function(internalformat) {
+        var srcTexFormatsTypes = { internalformat: "DEPTH24_STENCIL8", format: gl.DEPTH_STENCIL, type: gl.UNSIGNED_INT_24_8};
+        testFormat(internalformat, srcTexFormatsTypes, gl.DEPTH_STENCIL_ATTACHMENT,
+                   [gl.INVALID_ENUM, gl.INVALID_OPERATION],
+                   "copyTexImage2D should fail for depth internalformat ");
+    });
+
+    gl.deleteTexture(texture);
+}
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+    testInternalformat();
+}
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/generate-mipmap-with-large-base-level.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/generate-mipmap-with-large-base-level.html
new file mode 100644
index 0000000000..010cc0f913
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/generate-mipmap-with-large-base-level.html
@@ -0,0 +1,56 @@
+<!--
+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>Test if GenerateMipmap on immutable texture with large BASE_LEVEL triggers a crash</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="example" width="24" height="24"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description("This is a regression test for crbug.com/913301");
+debug("");
+
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("example", null, 2);
+gl.clearColor(0, 1, 0, 1);
+
+var targets = [gl.TEXTURE_2D, gl.TEXTURE_3D];
+for (var ii = 0; ii < targets.length; ++ii) {
+  gl.clear(gl.COLOR_BUFFER_BIT);
+  var target = targets[ii];
+  var tex = gl.createTexture();
+  gl.bindTexture(target, tex);
+  gl.texParameteri(target, gl.TEXTURE_BASE_LEVEL, 1416354905);
+  gl.texParameteri(target, gl.TEXTURE_MAX_LEVEL, 5);
+  gl.texParameteri(target, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
+  gl.texParameteri(target, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+  if (target == gl.TEXTURE_2D)
+    gl.texStorage2D(target, 5, gl.R8, 32, 32);
+  else
+    gl.texStorage3D(target, 5, gl.R8, 32, 32, 32);
+  // Should not crash calling generateMipmap.
+  gl.generateMipmap(target);
+  gl.deleteTexture(tex);
+  // If crashed, readPixels() won't be able to work correctly.
+  wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green", 5);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR);
+}
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
+
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/gl-get-tex-parameter.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/gl-get-tex-parameter.html
new file mode 100644
index 0000000000..babe388d14
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/gl-get-tex-parameter.html
@@ -0,0 +1,27 @@
+<!--
+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 getTexParameter test</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="example" width="4" height="4" style="width: 40px; height: 30px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+var contextVersion = 2;
+</script>
+<script src="../../../js/tests/gl-get-tex-parameter.js"></script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/immutable-tex-render-feedback.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/immutable-tex-render-feedback.html
new file mode 100644
index 0000000000..c94e359d64
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/immutable-tex-render-feedback.html
@@ -0,0 +1,221 @@
+<!--
+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>Ensure sampling-feedback detection can allow certain immutable texture uses</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>
+<script>
+"use strict";
+
+const wtu = WebGLTestUtils;
+description();
+
+const gl = wtu.create3DContext(undefined, undefined, 2);
+
+function* range(a, b) {
+    a.required;
+    if (b === undefined) {
+        b = a;
+        a = 0;
+    }
+    for (let i = a; i < b; i += 1) {
+        yield i;
+    }
+}
+
+const VS = `\
+void main() {
+    gl_PointSize = 1.0;
+}
+`;
+
+const FS = `\
+uniform sampler2D u_tex0;
+void main() {
+    gl_FragColor = texture2D(u_tex0, vec2(0));
+}
+`;
+
+const prog = wtu.loadProgram(gl, VS, FS);
+gl.useProgram(prog);
+
+(() => {
+    const MIPS = 3;
+    const SIZE = 10;
+
+    const immutTex = gl.createTexture();
+    immutTex.name = "immutTex";
+    immutTex.immutable = true;
+    gl.bindTexture(gl.TEXTURE_2D, immutTex);
+    gl.texStorage2D(gl.TEXTURE_2D, MIPS, gl.RGBA8, SIZE, SIZE);
+
+    const mutTex = gl.createTexture();
+    mutTex.name = "mutTex";
+    mutTex.immutable = false;
+    gl.bindTexture(gl.TEXTURE_2D, mutTex);
+    for (const mip of range(MIPS)) {
+        const size = SIZE >> mip;
+        gl.texImage2D(gl.TEXTURE_2D, mip, gl.RGBA8, size, size, 0,
+                      gl.RGBA, gl.UNSIGNED_BYTE, null);
+    }
+
+    const MAG_FILTERS = [
+        'LINEAR',
+        'NEAREST',
+    ];
+    const MIN_FILTERS = [
+        ['LINEAR',false],
+        ['LINEAR_MIPMAP_LINEAR',true],
+        ['LINEAR_MIPMAP_NEAREST',true],
+        ['NEAREST',false],
+        ['NEAREST_MIPMAP_LINEAR',true],
+        ['NEAREST_MIPMAP_NEAREST',true],
+    ];
+
+    const fb = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
+
+    debug(`
+        mips: ${MIPS}: [0,${MIPS-1}] (inclusive)
+        size: ${SIZE}`);
+    const texs = [
+        immutTex,
+        mutTex,
+    ];
+    for (const tex of texs) {
+        debug(`\
+
+            immutable: ${tex.immutable}`);
+        gl.bindTexture(gl.TEXTURE_2D, tex);
+
+        for (const level_prime_base of range(MIPS+1)) { // `level_base` in GLES
+            // ES 3.0.6 p150
+            let _level_base = level_prime_base;
+            if (tex.immutable) {
+                _level_base = Math.min(_level_base, MIPS-1);
+            }
+            const level_base = _level_base;
+
+            for (let _level_prime_max of range(level_prime_base-1, MIPS+2)) { // `q` in GLES
+                if (_level_prime_max < 0) continue;
+                if (_level_prime_max == MIPS+1) {
+                    _level_prime_max = 10000; // This is the default, after all!
+                }
+                const level_prime_max = _level_prime_max;
+
+                // ES 3.0.6 p150
+                let _level_max = level_prime_max;
+                if (tex.immutable) {
+                    _level_max = Math.min(Math.max(level_base, level_prime_max), MIPS-1);
+                }
+                const level_max = _level_max;
+
+                const p = Math.floor(Math.log2(SIZE)) + level_base;
+                const q = Math.min(p, level_max);
+
+                debug(`\
+
+                    level_prime_base/max: [${level_prime_base}, ${level_prime_max}] (inclusive)
+                    level_base/max: [${level_base}, ${level_max}] (inclusive)
+                    q: ${q}`);
+                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL,
+                                 level_prime_base);
+                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAX_LEVEL,
+                                 level_prime_max);
+
+                const mipComplete = (q <= MIPS-1);
+
+                for (const [minFilter,useMips] of MIN_FILTERS) {
+                    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER,
+                                     gl[minFilter]);
+
+                    // ES3.0 p211
+                    const srcMaxSampledMip = (useMips ? q : level_base);
+
+                    // ES3.0 p160-161
+                    const textureComplete = (srcMaxSampledMip <= MIPS-1) &&
+                                            (level_base <= level_max);
+
+                    for (const magFilter of MAG_FILTERS) {
+                        debug(`\
+
+                            min: ${minFilter}, mag: ${magFilter}`);
+                        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER,
+                                         gl[magFilter]);
+
+                        for (const dstMip of range(0,MIPS+1)) {
+                            debug(`
+                                mip: ${dstMip}`);
+                            gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0,
+                                                    gl.TEXTURE_2D, tex, dstMip);
+
+                            // -
+
+                            // ES3.0 p213-214
+                            let fbComplete = true;
+
+                            // * "The width and height of `image` are non-zero"
+                            fbComplete &= (0 <= dstMip && dstMip <= MIPS-1);
+
+                            if (!tex.immutable) { // "...does not name an immutable-format texture..."
+                                // * "...the value of [level] must be in the range `[level_base, q]`"
+                                fbComplete &= (level_base <= dstMip && dstMip <= q);
+
+                                // * "...the value of [level] is not `level_base`, then the texture must be mipmap complete"
+                                if (dstMip != level_base) {
+                                    fbComplete &= mipComplete;
+                                }
+                            }
+
+                            // -
+
+                            let expectError = 0;
+                            let expectStatus = gl.FRAMEBUFFER_COMPLETE;
+
+                            // ES3.0 p211
+                            let samplingFeedback = (level_base <= dstMip && dstMip <= srcMaxSampledMip);
+                            if (!textureComplete) {
+                                // Incomplete textures are safe
+                                samplingFeedback = false;
+                            }
+                            if (samplingFeedback) {
+                                expectError = gl.INVALID_OPERATION;
+                            }
+                            if (!fbComplete) {
+                                expectStatus = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
+                                expectError = gl.INVALID_FRAMEBUFFER_OPERATION;
+                            }
+
+                            // -
+
+                            wtu.framebufferStatusShouldBe(gl, gl.FRAMEBUFFER,
+                              expectStatus, `{immutable: ${tex.immutable}, level_prime_base/max: [${level_prime_base}, ${level_prime_max}], minFilter: ${minFilter}, dest: ${dstMip}}`);
+
+                            gl.drawArrays(gl.POINTS, 0, 1);
+                            wtu.glErrorShouldBe(gl, expectError, "after draw with texture");
+                        }
+                    }
+                }
+            }
+        }
+    }
+})();
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/integer-cubemap-specification-order-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/integer-cubemap-specification-order-bug.html
new file mode 100644
index 0000000000..99ee766227
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/integer-cubemap-specification-order-bug.html
@@ -0,0 +1,216 @@
+<!--
+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 Integer Cubemap Texture Specification Order Bug Test</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="example" width="128" height="128"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vs" type="x-shader/x-vertex">#version 300 es
+  precision highp float;
+  in vec4 a_position;
+  void main(){
+      gl_Position = a_position;
+  }
+</script>
+<script id="fs" type="x-shader/x-fragment">#version 300 es
+  precision highp float;
+  // This program samples both textures at varying Lod and exposes
+  // both of them, the regular on top, and the weird on the bottom.
+  // On the NVIDIA driver the top is both green and red while the bottom
+  // is only green. This is a driver bug because both textures should be
+  // exactly the same.
+  // I think that because of our level specification order weirdness, the
+  // driver gets confused as to which levels are complete and thinks only
+  // level 0 is complete. Then when sampling the texture it clamps the sampling
+  // to only level 0, resulting in green for all Lod values.
+  layout(location = 0) out vec4 fragColor;
+  uniform highp isamplerCube texRegular;
+  uniform highp isamplerCube texWeird;
+  void main() {
+      vec2 fragPos = gl_FragCoord.xy / vec2(128.0, 128.0);
+      float lod = (fragPos.x - 0.5) * 10.0 + 0.5;
+
+      ivec4 colorRegular = textureLod(texRegular, vec3(1.0, 0.0, 0.0), lod);
+      ivec4 colorWeird = textureLod(texWeird, vec3(1.0, 0.0, 0.0), lod);
+
+      if (fragPos.y > 0.51) {
+          fragColor = vec4(vec2(colorRegular.rg), 0.0, 1.0);
+      } else if (fragPos.y < 0.49){
+          fragColor = vec4(vec2(colorWeird.rg), 0.0, 1.0);
+      } else {
+          fragColor = vec4(0.0, 0.0, 0.0, 1.0);
+      }
+  }
+</script>
+<script>
+"use strict";
+
+var wtu = WebGLTestUtils;
+
+description("Test for a driver bug when specifying integer cubemaps in weird order");
+
+var gl = wtu.create3DContext("example", undefined, 2);
+
+function createTextureCube(layers, maxLevel) {
+    var texture = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_CUBE_MAP, texture);
+
+    layers.forEach(function(layer) {
+        var level = layer.level;
+        var face = layer.face;
+        var color = layer.color;
+
+        var levelSize = 1 << (maxLevel - level);
+
+        var backingBuffer = new ArrayBuffer(levelSize * levelSize * 2);
+        new Int16Array(backingBuffer).fill(color);
+        gl.texImage2D(face + gl.TEXTURE_CUBE_MAP_POSITIVE_X, level, gl.RG8I, levelSize, levelSize, 0, gl.RG_INTEGER, gl.BYTE, new Int8Array(backingBuffer));
+    });
+
+    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_NEAREST);
+    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+
+    return texture;
+}
+
+function makePermutedLayers(layers, permutation) {
+    return permutation.map(i => layers[i]);
+}
+
+function test() {
+    var kMaxLevel = 4;
+    var kBlack = 0x0000;
+    var kGreen = 0x7F00;
+    var kRed = 0x007F;
+
+    // Create two integer cubemaps with green on level 0 and red on the others.
+
+    // The "regular" cube map is filled in a sensible manner.
+    var regularLayers = [];
+    for (var level = 0; level <= kMaxLevel; level ++) {
+        for (var face = 0; face < 6; face ++) {
+            if (level == 0) {
+                regularLayers.push({level: level, face: face, color: kGreen});
+            } else {
+                regularLayers.push({level: level, face: face, color: kRed});
+            }
+        }
+    }
+
+    // The "weird" cube map has all its >= 1 levels filled, then the first level,
+    // then the >= 1 levels again but for one face. This replicates what the
+    // Chromium command buffer "cubemap completeness" workaround is doing.
+    var weirdLayers = [];
+    for (var level = 1; level <= kMaxLevel; level ++) {
+        for (var face = 0; face < 5; face ++) {
+            weirdLayers.push({level: level, face: face, color: kBlack});
+        }
+        weirdLayers.push({level: level, face: 5, color: kRed});
+    }
+    for (var level = 0; level <= kMaxLevel; level ++) {
+        for (var face = 0; face < 6; face ++) {
+            if (level == 0) {
+                weirdLayers.push({level: level, face: face, color: kGreen});
+            } else {
+                if (face != 5) {
+                    weirdLayers.push({level: level, face: face, color: kRed});
+                }
+            }
+        }
+    }
+
+    var regularTex = createTextureCube(regularLayers, kMaxLevel);
+
+    var sampleProgram = wtu.setupProgram(gl, ["vs", "fs"], ["a_position"]);
+    var regularLocation = gl.getUniformLocation(sampleProgram, "texRegular");
+    var weirdLocation = gl.getUniformLocation(sampleProgram, "texWeird");
+
+    wtu.setupQuad(gl, gl.getAttribLocation(sampleProgram, "a_position"));
+
+    gl.uniform1i(regularLocation, 0);
+    gl.uniform1i(weirdLocation, 1);
+
+    function testcase(layers1, casename) {
+        var tex1 = createTextureCube(layers1, kMaxLevel);
+
+        gl.activeTexture(gl.TEXTURE0);
+        gl.bindTexture(gl.TEXTURE_CUBE_MAP, regularTex);
+        gl.activeTexture(gl.TEXTURE1);
+        gl.bindTexture(gl.TEXTURE_CUBE_MAP, tex1);
+        // At this point both textures should be the same.
+        wtu.drawUnitQuad(gl);
+
+        gl.deleteTexture(tex1);
+
+        wtu.checkCanvasRect(gl, 96, 32, 1, 1, [255, 0, 0, 255], "should be green: " + casename);
+        wtu.checkCanvasRect(gl, 96, 96, 1, 1, [255, 0, 0, 255], "should be green: " + casename);
+        wtu.checkCanvasRect(gl, 32, 32, 1, 1, [0, 255, 0, 255], "should be red: " + casename);
+        wtu.checkCanvasRect(gl, 32, 96, 1, 1, [0, 255, 0, 255], "should be red: " + casename);
+    }
+
+    testcase(weirdLayers, "original");
+    const cases = [
+        [10,23,3,19,26,29,14,9,4,11,27,28,13,24,20,12,17,21,16,5,6,25,1,15,22,8,7,18,0,2],
+        [10,27,3,29,17,28,13,20,18,25,9,2,8,4,24,12,15,7,19,11,6,14,16,21,1,26,23,22,0,5],
+        [11,4,15,13,26,24,25,2,19,20,16,23,1,18,28,27,6,21,14,8,17,29,3,10,12,9,22,7,0,5],
+        [14,2,6,28,7,25,11,26,22,13,19,21,24,4,16,29,9,27,3,17,18,15,12,20,8,23,10,1,0,5],
+        [14,20,22,16,11,27,17,21,15,3,5,28,6,2,9,12,7,24,1,26,8,19,23,25,18,13,29,10,0,4],
+        [14,20,22,16,11,27,17,21,15,3,5,28,6,2,9,12,7,24,1,26,8,19,23,25,18,13,29,10,0,4],
+        [14,22,27,1,12,24,13,21,6,10,20,28,23,16,5,18,7,3,25,2,11,19,17,26,8,29,15,9,0,4],
+        [15,22,13,28,6,12,19,9,18,11,3,23,17,8,10,20,5,14,4,25,27,26,21,16,29,24,7,0,1,2],
+        [15,22,13,28,6,12,19,9,18,11,3,23,17,8,10,20,5,14,4,25,27,26,21,16,29,24,7,0,1,2],
+        [16,22,18,15,19,6,21,27,4,14,29,17,7,9,11,20,24,23,28,25,2,13,10,26,8,12,3,0,5,1],
+        [16,26,18,7,20,25,11,24,2,1,28,13,29,10,27,21,6,15,5,19,17,12,14,9,23,22,8,3,0,4],
+        [2,22,25,12,19,16,7,27,9,10,8,17,18,24,1,21,20,14,13,4,11,29,15,5,23,26,6,28,0,3],
+        [2,9,16,26,6,15,4,3,17,13,21,10,7,22,23,29,19,18,12,24,14,25,8,5,20,28,11,27,0,1],
+        [2,9,16,26,6,15,4,3,17,13,21,10,7,22,23,29,19,18,12,24,14,25,8,5,20,28,11,27,0,1],
+        [20,21,24,15,5,13,6,12,2,17,10,14,27,16,8,22,9,25,29,1,28,11,4,19,7,23,26,18,0,3],
+        [21,14,19,12,28,6,10,7,16,27,11,22,20,24,25,26,3,8,4,18,5,2,9,15,17,23,13,29,0,1],
+        [22,4,18,7,11,6,23,17,14,3,13,21,15,19,25,28,9,8,10,12,29,16,27,2,24,1,20,26,0,5],
+        [22,4,18,7,11,6,23,17,14,3,13,21,15,19,25,28,9,8,10,12,29,16,27,2,24,1,20,26,0,5],
+        [23,21,9,28,22,15,25,12,24,18,29,2,17,1,14,4,16,26,3,11,27,13,8,7,6,20,10,19,0,5],
+        [23,6,15,13,19,2,12,7,11,29,3,20,17,10,4,18,1,22,16,27,24,9,21,25,14,26,8,28,0,5],
+        [25,12,1,4,9,22,16,28,6,11,14,29,15,2,5,13,10,20,21,19,23,27,18,26,7,8,17,24,0,3],
+        [25,13,29,26,28,17,19,23,7,24,10,1,15,8,3,11,18,21,27,22,12,5,9,6,16,14,20,2,0,4],
+        [25,18,28,12,27,13,11,4,29,8,21,15,9,6,26,20,22,23,24,17,5,16,2,7,14,19,10,0,1,3],
+        [25,19,3,10,23,15,27,18,12,8,7,24,16,14,26,4,21,5,9,1,22,28,20,29,6,11,13,17,0,2],
+        [25,24,12,9,13,10,23,4,19,29,16,1,15,8,21,26,18,11,17,7,20,28,22,14,27,6,0,2,5,3],
+        [25,9,29,8,3,6,10,27,11,28,13,23,18,16,17,19,5,22,12,26,21,4,7,14,24,15,2,20,0,1],
+        [27,23,20,2,12,14,6,19,3,28,18,10,29,11,13,22,21,7,15,9,8,17,25,16,26,24,4,5,0,1],
+        [27,7,2,5,19,10,3,26,22,18,23,16,9,24,21,17,6,28,12,14,25,29,13,15,8,20,11,4,0,1],
+        [28,7,10,9,29,27,2,20,1,26,11,5,12,23,25,3,17,16,24,13,8,6,14,18,21,19,15,22,0,4],
+        [28,8,23,13,18,29,20,9,10,27,15,21,3,19,14,4,26,5,24,1,6,17,11,12,16,7,25,22,0,2],
+        [29,12,13,2,22,19,16,7,14,11,24,23,28,15,17,9,20,21,18,26,27,25,10,5,8,6,4,3,0,1],
+        [29,8,5,4,7,15,19,17,3,26,13,9,23,6,25,22,27,24,14,16,10,21,11,18,28,12,2,20,0,1],
+        [5,18,6,17,19,16,13,11,28,8,10,4,29,26,20,24,9,7,21,25,27,23,22,2,15,14,12,0,3,1],
+        [5,23,2,15,7,13,19,11,27,3,22,14,4,26,28,20,17,18,8,25,16,29,10,24,12,9,6,21,0,1],
+        [7,24,27,26,16,18,22,20,10,11,9,19,23,12,17,13,4,2,6,1,21,25,15,28,8,3,29,14,0,5],
+    ];
+    for (const c of cases) {
+        testcase(makePermutedLayers(regularLayers, c), "case " + c.toString());
+    }
+}
+
+test();
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/integer-cubemap-texture-sampling.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/integer-cubemap-texture-sampling.html
new file mode 100644
index 0000000000..8ad4967608
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/integer-cubemap-texture-sampling.html
@@ -0,0 +1,169 @@
+<!--
+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 Integer Cubemap Texture Sampling Tests</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>
+<script src="../../../js/tests/tex-image-and-sub-image-utils.js"></script>
+</head>
+<body>
+<canvas id="example" width="128" height="128"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+
+var wtu = WebGLTestUtils;
+var tiu = TexImageUtils;
+
+description("Verify sampling works fine with integer cubemap textures");
+debug("https://github.com/KhronosGroup/WebGL/issues/1819");
+
+var gl = wtu.create3DContext("example", undefined, 2);
+
+var testCases = [
+    { internalFormat: "R8UI", format: "RED_INTEGER", type: "UNSIGNED_BYTE" },
+    { internalFormat: "RG8UI", format: "RG_INTEGER", type: "UNSIGNED_BYTE" },
+    { internalFormat: "RGB8UI", format: "RGB_INTEGER", type: "UNSIGNED_BYTE" },
+    { internalFormat: "RGBA8UI", format: "RGBA_INTEGER", type: "UNSIGNED_BYTE" },
+];
+
+function setupData(internalFormat, size) {
+    var numComponents = 0;
+    switch (gl[internalFormat]) {
+      case gl.R8UI:
+        numComponents = 1;
+        break;
+      case gl.RG8UI:
+        numComponents = 2;
+        break;
+      case gl.RGB8UI:
+        numComponents = 3;
+        break;
+      case gl.RGBA8UI:
+        numComponents = 4;
+        break;
+    }
+    if (numComponents == 0) {
+        testFailed("This should never be reached");
+        return null;
+    }
+    var data = new Uint8Array(numComponents * size * size);
+    for (var ii = 0; ii < size * size; ++ii) {
+        // Set all pixels to RED.
+        data[ii * numComponents] = 255;
+        if (numComponents > 1)
+            data[ii * numComponents + 1] = 0;
+        if (numComponents > 2)
+            data[ii * numComponents + 2] = 0;
+        if (numComponents > 3)
+            data[ii * numComponents + 3] = 255;
+    }
+    return data;
+}
+
+function checkIntegerTextureValues(internalFormat, size) {
+    var buffer = new Uint32Array(4 * size * size);
+    gl.readPixels(0, 0, size, size, gl.RGBA_INTEGER, gl.UNSIGNED_INT, buffer);
+    for (var y = 0; y < size; ++y) {
+        for (var x = 0; x < size; ++x) {
+            var index = (y * size + x) * 4;
+            if (buffer[index] != 255 || buffer[index + 1] != 0 || buffer[index + 2] != 0) {
+                testFailed("At (" + x + ", " + y + "), expected 255,0,0,255, was " +
+                           [buffer[index], buffer[index + 1], buffer[index + 2], buffer[index + 3]]);
+                return;
+            }
+        }
+    }
+    testPassed("All pixels are as expected");
+}
+
+function runOneTest(internalFormat, format, type, size) {
+    debug("");
+    debug("Testing internalformat = " + internalFormat + ", format = " + format + ", type = " + type + ", size = " + size);
+
+    gl.clearColor(1, 1, 0, 1);
+    gl.clearDepth(1);
+    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+
+    var tex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_CUBE_MAP, tex);
+    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+
+    gl.pixelStorei(gl.UNPACK_ALIGNMENT, 1);
+
+    var targets = [gl.TEXTURE_CUBE_MAP_POSITIVE_X,
+                   gl.TEXTURE_CUBE_MAP_NEGATIVE_X,
+                   gl.TEXTURE_CUBE_MAP_POSITIVE_Y,
+                   gl.TEXTURE_CUBE_MAP_NEGATIVE_Y,
+                   gl.TEXTURE_CUBE_MAP_POSITIVE_Z,
+                   gl.TEXTURE_CUBE_MAP_NEGATIVE_Z];
+    var data = setupData(internalFormat, size);
+    for (var tt = 0; tt < targets.length; ++tt) {
+        gl.texImage2D(targets[tt], 0, gl[internalFormat], size, size, 0, gl[format], gl[type], data);
+    }
+
+    debug("1) Reading back texture data");
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    for (var tt = 0; tt < targets.length; ++tt) {
+        gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, targets[tt], tex, 0);
+        if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
+            checkIntegerTextureValues(internalFormat, size);
+        }
+    }
+    gl.deleteFramebuffer(fbo);
+
+    debug("2) Rendering with texture");
+    var program = tiu.setupTexturedQuadWithCubeMap(gl, internalFormat);
+    var loc = gl.getUniformLocation(program, "face");
+    for (var tt = 0; tt < targets.length; ++tt) {
+        gl.uniform1i(loc, targets[tt]);
+        // Draw the triangles
+        wtu.clearAndDrawUnitQuad(gl, [0, 255, 0, 255]);
+        wtu.checkCanvasRect(gl, 0, 0, gl.canvas.width, gl.canvas.height, [255, 0, 0, 255], "Should be red");
+    }
+    gl.deleteProgram(program);
+    gl.deleteTexture(tex);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No GL errors");
+
+    var m = wtu.makeImageFromCanvas(gl.canvas);
+    document.getElementById("console").appendChild(m);
+    document.getElementById("console").appendChild(document.createElement("hr"));
+}
+
+function runTests() {
+    for (var ii = 0; ii < testCases.length; ++ii) {
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 2);
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 4);
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 8);
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 16);
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 32);
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 64);
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 65);
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 127);
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 128);
+        runOneTest(testCases[ii].internalFormat, testCases[ii].format, testCases[ii].type, 129);
+    }
+}
+
+runTests();
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/mipmap-fbo.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/mipmap-fbo.html
new file mode 100644
index 0000000000..cd48bb77c5
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/mipmap-fbo.html
@@ -0,0 +1,50 @@
+<!--
+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>Test if mipmap incomplete textures can be used as FBO attachments</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="example" width="24" height="24"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+
+var wtu = WebGLTestUtils;
+description();
+
+var gl = wtu.create3DContext("example", undefined, 2);
+
+var testIncompleteMipmapInFBO = function () {
+    // Create a texture that's not mipmap complete.
+    var texture = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, texture);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 32, 32, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+
+    // Framebuffer should be incomplete for incomplete texture.
+    var fbo = gl.createFramebuffer();
+    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 1);
+    shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT");
+}
+
+testIncompleteMipmapInFBO();
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/npot-video-sizing.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/npot-video-sizing.html
new file mode 100644
index 0000000000..3ce3917da3
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/npot-video-sizing.html
@@ -0,0 +1,181 @@
+<!--
+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">
+<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>
+<script>
+"use strict";
+var wtu = WebGLTestUtils;
+var gl = null;
+var textureLoc = null;
+var expectedVideoHeightLoc = null;
+var successfullyParsed = false;
+var resourcePath = "../../../resources/";
+// Test each format separately because many browsers implement each
+// differently. Some might be GPU accelerated, some might not. Etc...
+var videos = [
+  { src: resourcePath + "npot-video-1920x1080.mp4" ,
+    type: 'video/mp4; codecs="avc1.42E01E, mp4a.40.2"',
+    // It was found that Firefox's videoHeight doesn't report the
+    // correct answer for this video resource, though the uploaded
+    // video texture is the correct size.
+    expectedHeight: 1080,
+  },
+  // Should port this to other formats. See tex-image-and-sub-image-2d-with-video.js.
+];
+var videoNdx = 0;
+var videoInfo;
+var video;
+
+initTestingHarness();
+
+var vertexShader = [
+    '#version 300 es',
+    'in vec4 vPosition;',
+    'in vec2 texCoord0;',
+    'out vec2 texCoord;',
+    'void main() {',
+    '    gl_Position = vPosition;',
+    '    texCoord = texCoord0;',
+    '}'].join('\n');
+
+// ESSL 3.00 and WebGL 2.0 are used in order to gain access to the
+// "textureSize" built-in function. This was the most reliable way to
+// verify the behavior of video-to-texture uploads.
+
+var fragmentShader = [
+    '#version 300 es',
+    'precision mediump float;',
+    'uniform mediump sampler2D tex;',
+    'uniform int expectedVideoHeight;',
+    'in vec2 texCoord;',
+    'out vec4 fragData;',
+    'void main() {',
+    '    if (textureSize(tex, 0).y == expectedVideoHeight) {',
+    '      fragData = vec4(0.0, 1.0, 0.0, 1.0);',
+    '    } else {',
+    '      fragData = vec4(1.0, 0.0, 0.0, 1.0);',
+    '    }',
+    '}'].join('\n');
+
+function init()
+{
+    description('Verify sizing of npot videos uploaded to textures');
+
+    debug('Verifies that the size of a texture, uploaded from a video, is exactly the expected size of the video.');
+    debug('Regression test for <a href="http://crbug.com/672895">http://crbug.com/672895</a>');
+
+    var canvas = document.getElementById("example");
+    gl = wtu.create3DContext(canvas, { preserveDrawingBuffer: true }, 2);
+    wtu.setupUnitQuad(gl);
+    var program = wtu.setupProgram(
+        gl,
+        [vertexShader, fragmentShader],
+        ['vPosition', 'texCoord0'],
+        [0, 1]);
+
+    if (!program) {
+        testFailed("Error creating program");
+        return;
+    }
+
+    gl.clearColor(0,0,0,1);
+    gl.clearDepth(1);
+    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+    // Disable any writes to the alpha channel
+    gl.colorMask(1, 1, 1, 0);
+
+    textureLoc = gl.getUniformLocation(program, "tex");
+    expectedVideoHeightLoc = gl.getUniformLocation(
+        program, "expectedVideoHeight");
+
+    requestAnimationFrame(runNextVideo);
+}
+
+function runNextVideo() {
+    if (video) {
+        video.pause();
+    }
+
+    if (videoNdx == videos.length) {
+        finishTest();
+        return;
+    }
+
+    videoInfo = videos[videoNdx++];
+    debug("");
+    debug("testing: " + videoInfo.type);
+    video = document.createElement("video");
+    video.muted = true;
+    var canPlay = true;
+    if (!video.canPlayType) {
+        testFailed("video.canPlayType required method missing");
+        requestAnimationFrame(runNextVideo);
+        return;
+    }
+
+    if (!video.canPlayType(videoInfo.type).replace(/no/, '')) {
+        debug(videoInfo.type + " unsupported");
+        requestAnimationFrame(runNextVideo);
+        return;
+    };
+
+    document.body.appendChild(video);
+    video.style = "display:none;";
+    video.type = videoInfo.type;
+    video.src = videoInfo.src;
+    wtu.startPlayingAndWaitForVideo(video, runTest);
+}
+
+function runTest()
+{
+    var texture = gl.createTexture();
+    // Bind the texture to texture unit 0
+    gl.bindTexture(gl.TEXTURE_2D, texture);
+    // Set up texture parameters
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+    // Set up pixel store parameters
+    gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
+    gl.pixelStorei(gl.UNPACK_ALIGNMENT, 1);
+    // Upload the video element into the texture
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB, gl.RGB, gl.UNSIGNED_BYTE, video);
+    // Point the uniform sampler to texture unit 0
+    gl.uniform1i(textureLoc, 0);
+    // Set up the expected video size
+    debug('video\'s expected height: ' + videoInfo.expectedHeight);
+    debug('video\'s reported width and height: ' + video.videoWidth + ' x ' + video.videoHeight);
+    // We only verify the height. Chrome was generating the wrong
+    // height for some video resources. As it stands, not all browsers
+    // match the video's width exactly.
+    gl.uniform1i(expectedVideoHeightLoc, videoInfo.expectedHeight);
+
+    // Draw the triangles
+    wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 255]);
+
+    // Verify that the video texture's size was as expected
+    wtu.checkCanvasRect(gl, 0, 0, gl.canvas.width, gl.canvas.height,
+                        [0, 255, 0, 255],
+                        "Should be green -- that indicates the video texture's height was correct",
+                        1);
+
+    requestAnimationFrame(runNextVideo);
+}
+
+</script>
+</head>
+<body onload="init()">
+<canvas id="example" width="32" height="32"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+</body>
+</html>
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>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-3d-mipmap-levels-intel-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-3d-mipmap-levels-intel-bug.html
new file mode 100644
index 0000000000..594938c089
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-3d-mipmap-levels-intel-bug.html
@@ -0,0 +1,82 @@
+<!--
+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 3D texture mipmap level conformance test.</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="example" width="2" height="2" style="width: 2px; height: 2px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader_texsize" type="x-shader/x-vertex">#version 300 es
+in vec4 vPosition;
+void main()
+{
+    gl_Position = vPosition;
+}
+</script>
+
+<script id="fshader_texsize_3d" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+uniform highp sampler3D tex;
+uniform int lod;
+uniform ivec3 texSize;
+out vec4 fragColor;
+void main()
+{
+    fragColor = (textureSize(tex, lod) == texSize ? vec4(255, 0, 0, 255) : vec4(0, 0, 0, 255));
+}
+</script>
+
+
+<script>
+"use strict";
+description(document.title);
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("example", undefined, 2);
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+
+// This test fails on Intel Mesa, see crbug.com/666384.
+(function() {
+  debug("");
+  debug("Test textureSize should work correctly with non-zero base level for texStorage3D");
+  var program = wtu.setupProgram(
+      gl, ['vshader_texsize', 'fshader_texsize_3d'], ['vPosition'], [0]);
+  wtu.setupUnitQuad(gl, 0, 1);
+
+  gl.uniform1i(gl.getUniformLocation(program, "tex"), 0);
+  gl.uniform1i(gl.getUniformLocation(program, "lod"), 1);
+  gl.uniform3i(gl.getUniformLocation(program, "texSize"), 8, 4, 2);
+  var tex3d = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_3D, tex3d);
+  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MAG_FILTER) should succeed");
+  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MIN_FILTER) should succeed");
+  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_BASE_LEVEL, 1);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_BASE_LEVEL) should succeed");
+  gl.texStorage3D(gl.TEXTURE_3D, 4, gl.RGBA8, 32, 16, 8);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texStorage3D should succeed");
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearAndDrawQuad should succeed");
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "should draw with [255, 0, 0, 255]");
+  gl.deleteTexture(tex3d);
+})();
+
+var successfullyParsed = true;
+
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-3d-size-limit.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-3d-size-limit.html
new file mode 100644
index 0000000000..6c2fbc4fa9
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-3d-size-limit.html
@@ -0,0 +1,189 @@
+<!--
+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 FramebufferTextureLayer Test</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";
+var wtu = WebGLTestUtils;
+var gl;
+var canvas = document.getElementById("canvas");
+
+function numLevelsFromSize(size) {
+    var levels = 0;
+    while ((size >> levels) > 0) {
+        ++levels;
+    }
+    return levels;
+}
+
+function enumToString(value) {
+    return wtu.glEnumToString(gl, value);
+}
+
+function test3DTextureDimensions() {
+    debug("");
+    debug("Checking 3D texture dimensions.");
+
+    var tex3d = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_3D, tex3d);
+    var maxTexSize = gl.getParameter(gl.MAX_3D_TEXTURE_SIZE);
+    var maxLevels = numLevelsFromSize(maxTexSize);
+
+    gl.texImage3D(gl.TEXTURE_3D,
+                  0,                                // level
+                  gl.RGBA,                          // internalFormat
+                  1,                                // width
+                  1,                                // height
+                  -1,                               // depth
+                  0,                                // border
+                  gl.RGBA,                          // format
+                  gl.UNSIGNED_BYTE,                 // type
+                  null);                            // data
+    wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
+        "texImage3D should fail for dimension out of range.");
+    gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA, maxTexSize + 1, 2, 2, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+    wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
+        "texImage3D should fail for dimension out of range.");
+
+    for (var i = 0; i < maxLevels; ++i) {
+        var level = maxLevels - i - 1;
+        var badSize = 1 << (i + 1);
+
+        gl.texImage3D(gl.TEXTURE_3D, level, gl.RGBA, badSize, 2, 2, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texImage3D should fail for dimension out of range.");
+        gl.texImage3D(gl.TEXTURE_3D, level, gl.RGBA, 2, badSize, 2, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texImage3D should fail for dimension out of range.");
+        gl.texImage3D(gl.TEXTURE_3D, level, gl.RGBA, 2, 2, badSize, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texImage3D should fail for dimension out of range.");
+    }
+
+    // Probe to discover the max non-OOM level.
+    var numTestLevels = maxLevels;
+    while (true) {
+        gl.texImage3D(gl.TEXTURE_3D, numTestLevels-1, gl.RGBA, 1, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+        var err = gl.getError();
+        if (err == gl.OUT_OF_MEMORY) {
+            debug("Probe failed for level=" + (numTestLevels-1) + ", reducing...");
+            numTestLevels -= 1;
+            if (!numTestLevels) {
+                testFailed("Failed to allocate any levels");
+                return;
+            }
+            continue;
+        }
+        if (err) {
+            testFailed("Should not hit non-OOM errors during max level probing.");
+            return;
+        }
+        break;
+    }
+
+    for (var i = 0; i < numTestLevels; ++i) {
+        var level = numTestLevels - i - 1;
+        var size = 1 << i;
+
+        gl.texImage3D(gl.TEXTURE_3D, level, gl.RGBA, size, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D should succeed for level: " + level + " " + size + "x1x1.");
+        gl.texImage3D(gl.TEXTURE_3D, level, gl.RGBA, 1, size, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D should succeed for level: " + level + " 1x" + size + "x1.");
+        gl.texImage3D(gl.TEXTURE_3D, level, gl.RGBA, 1, 1, size, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D should succeed for level: " + level + " 1x1x" + size + ".");
+    }
+
+    // Clean up
+    gl.deleteTexture(tex3d);
+}
+
+function test3DTexturePixelSize() {
+    debug("");
+    debug("Checking pixel data array is big enough for request.");
+
+    var tex3d = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_3D, tex3d);
+    var tests = [
+        {
+            internalformat: gl.RGBA,
+            format: gl.RGBA,
+            type: gl.UNSIGNED_BYTE,
+            size: 4,
+            dataType: Uint8Array
+        },
+        {
+            internalformat: gl.R8,
+            format: gl.RED,
+            type: gl.UNSIGNED_BYTE,
+            size: 1,
+            dataType: Uint8Array
+        },
+        {
+            internalformat: gl.RGB565,
+            format: gl.RGB,
+            type: gl.UNSIGNED_SHORT_5_6_5,
+            size: 1,
+            dataType: Uint16Array
+        },
+        {
+            internalformat: gl.RGBA32I,
+            format: gl.RGBA_INTEGER,
+            type: gl.INT,
+            size: 4,
+            dataType: Int32Array
+        },
+        {
+            internalformat: gl.RGBA32F,
+            format: gl.RGBA,
+            type: gl.FLOAT,
+            size: 4,
+            dataType: Float32Array
+        },
+    ];
+
+    tests.forEach(function(test) {
+        debug("");
+        debug("Testing internalformat " + enumToString(test.internalformat)
+              + ", format " + enumToString(test.format)
+              + ", type " + enumToString(test.type));
+
+        var pixels = new test.dataType(256 * 256 * 4 * test.size);
+        gl.texImage3D(gl.TEXTURE_3D, 0, test.internalformat, 256, 256, 256, 0, test.format, test.type, pixels);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "ArrayBufferView not big enough for request by texImage3D.");
+        gl.texImage3D(gl.TEXTURE_3D, 0, test.internalformat, 256, 256, 4, 0, test.format, test.type, pixels);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "ArrayBufferView big enough for request by texImage3D.");
+        pixels = new test.dataType(256 * 256 * 1 * test.size);
+        gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, 256, 256, 2, test.format, test.type, pixels);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "ArrayBufferView not big enough for request by texSubImage3D.");
+    });
+
+    gl.deleteTexture(tex3d);
+}
+
+description("This tests size limits of 3D textures.");
+
+shouldBeNonNull("gl = wtu.create3DContext(undefined, undefined, 2)");
+
+test3DTextureDimensions();
+test3DTexturePixelSize();
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-base-level-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-base-level-bug.html
new file mode 100644
index 0000000000..47f049fd8a
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-base-level-bug.html
@@ -0,0 +1,76 @@
+<!--
+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 texture base level bug conformance test.</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>
+<script src="../../../js/tests/tex-image-and-sub-image-utils.js"></script>
+</head>
+<body>
+<canvas id="example" width="2" height="2" style="width: 2px; height: 2px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+
+<script>
+"use strict";
+description(document.title);
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("example");
+var gl = wtu.create3DContext("example", undefined, 2);
+var tiu = TexImageUtils;
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+
+function runtest() {
+  debug("");
+  debug("This is a regression test for <a href='https://crbug.com/705865'>Chromium Issue 705865</a>");
+  var tex = gl.createTexture();
+  var program = tiu.setupTexturedQuad(gl, "RGBA");
+
+  // Test that filling partial levels is enough for mipmapping.
+  var width = 2;
+  var height = 2;
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  wtu.fillTexture(gl, tex, width, height, [255, 0, 0, 255], 2, gl.RGBA, gl.UNSIGNED_BYTE);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 2);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Texture setup should succeed");
+
+  canvas.width = width;
+  canvas.height = height;
+  gl.viewport(0, 0, width, height);
+
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearAndDrawQuad should succeed");
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "should draw with [255, 0, 0, 255]");
+
+  width = 1;
+  height = 1;
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D should succeed");
+
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "should draw with [255, 0, 0, 255]");
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR,"checkCanvas should succeed");
+
+  gl.deleteTexture(tex);
+
+};
+
+runtest();
+var successfullyParsed = true;
+
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-and-sub-image-with-array-buffer-view-sub-source.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-and-sub-image-with-array-buffer-view-sub-source.html
new file mode 100644
index 0000000000..0abd2b5a3a
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-and-sub-image-with-array-buffer-view-sub-source.html
@@ -0,0 +1,197 @@
+<!--
+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">
+<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>
+<script src="../../../js/tests/tex-image-and-sub-image-utils.js"></script>
+</head>
+<body>
+<canvas id="example" width="2" height="2"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description('Verifies tex{Sub}Image{2|3}D code paths taking partial ArrayBufferView');
+
+var wtu = WebGLTestUtils;
+var tiu = TexImageUtils;
+
+function createSource(width, height, depth, viewType, offset) {
+  var size = width * height * depth * 4;  // RGBA
+  var buf = new window[viewType](size + offset);
+  for (var ii = 0; ii < size; ++ii) {
+    if (viewType == "Float32Array")
+      buf[ii + offset] = ii / 255.0;
+    else
+      buf[ii + offset] = ii;
+  }
+  return buf;
+}
+
+function comparePixels(ref, refOffset, data, tol) {
+  for (var ii = 0; ii < data.length; ++ii) {
+    // Skip alpha due to shader's handling of alpha values.
+    if (ii % 4 == 3)
+      continue;
+    var src = ref[ii + refOffset];
+    if (ref instanceof Float32Array)
+      src *= 255;
+    if (Math.abs(src - data[ii]) > tol) {
+      testFailed("Element " + ii + ": expected " + src + ", got " + data[ii]);
+      return;
+    }
+  }
+  return testPassed("texture data uploaded correctly");
+}
+
+function run2DTest(gl, test, width, height, srcOffset, tol) {
+  debug("");
+  debug("Tesing tex{Sub}Image2D with sub source: internalformat = " + test.internalformat +
+        ", format = " + test.format + ", type = " + test.type);
+
+  var program = tiu.setupTexturedQuad(gl, test.internalformat);
+  if (!program) {
+    testFailed("Failed to set up program");
+    return;
+  }
+
+  var buf = createSource(width, height, 1, test.viewType, srcOffset);
+
+  var texture = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, texture);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl[test.internalformat], width, height, 0,
+                gl[test.format], gl[test.type], buf, srcOffset + 1);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "srcOffset too large");
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl[test.internalformat], width, height, 0,
+                gl[test.format], gl[test.type], buf, srcOffset);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D succeeds with correct buffer and srcOffset");
+
+  wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 255]);
+  var readBuf = new Uint8Array(width * height * 4);
+  gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+  gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, readBuf);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
+  var tol = 0.5;
+  comparePixels(buf, srcOffset, readBuf, tol);
+
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl[test.internalformat], width, height, 0,
+                gl[test.format], gl[test.type], null);
+  gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, width, height, gl[test.format], gl[test.type],
+                   buf, srcOffset + 1);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "srcOffset too large");
+  gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, width, height, gl[test.format], gl[test.type],
+                   buf, srcOffset);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D succeeds with correct buffer and srcOffset");
+
+  wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 255]);
+  gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+  gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, readBuf);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
+  comparePixels(buf, srcOffset, readBuf, tol);
+
+  gl.deleteTexture(texture);
+  gl.deleteProgram(program);
+}
+
+function run3DTest(gl, test, width, height, srcOffset, tol) {
+  debug("");
+  debug("Tesing tex{Sub}Image3D with sub source: internalformat = " + test.internalformat +
+        ", format = " + test.format + ", type = " + test.type);
+
+  var program = tiu.setupTexturedQuadWith3D(gl, test.internalformat);
+  if (!program) {
+    testFailed("Failed to set up program");
+    return;
+  }
+
+  var depth = 1;
+  var buf = createSource(width, height, depth, test.viewType, srcOffset);
+
+  var texture = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_3D, texture);
+  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_WRAP_R, gl.CLAMP_TO_EDGE);
+  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl[test.internalformat], width, height, depth, 0,
+                gl[test.format], gl[test.type], buf, srcOffset + 1);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "srcOffset too large");
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl[test.internalformat], width, height, depth, 0,
+                gl[test.format], gl[test.type], buf, srcOffset);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D succeeds with correct buffer and srcOffset");
+
+  wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 255]);
+  var readBuf = new Uint8Array(width * height * 4);
+  gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+  gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, readBuf);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
+  var tol = 0.5;
+  comparePixels(buf, srcOffset, readBuf, tol);
+
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl[test.internalformat], width, height, depth, 0,
+                gl[test.format], gl[test.type], null);
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl[test.format], gl[test.type],
+                   buf, srcOffset + 1);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "srcOffset too large");
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl[test.format], gl[test.type],
+                   buf, srcOffset);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D succeeds with correct buffer and srcOffset");
+
+  wtu.clearAndDrawUnitQuad(gl, [0, 0, 0, 255]);
+  gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+  gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, readBuf);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
+  comparePixels(buf, srcOffset, readBuf, tol);
+
+  gl.deleteTexture(texture);
+  gl.deleteProgram(program);
+}
+
+var gl = wtu.create3DContext("example", undefined, 2);
+if (!gl) {
+  testFailed("Fail to get a WebGL context");
+} else {
+  var testCases = [
+    { internalformat: 'RGBA8', format: 'RGBA', type: 'UNSIGNED_BYTE',
+      viewType: 'Uint8Array', },
+    { internalformat: 'RGBA8I', format: 'RGBA_INTEGER', type: 'BYTE',
+      viewType: 'Int8Array', },
+    { internalformat: 'RGBA16UI', format: 'RGBA_INTEGER', type: 'UNSIGNED_SHORT',
+      viewType: 'Uint16Array', },
+    { internalformat: 'RGBA16I', format: 'RGBA_INTEGER', type: 'SHORT',
+      viewType: 'Int16Array', },
+    { internalformat: 'RGBA32UI', format: 'RGBA_INTEGER', type: 'UNSIGNED_INT',
+      viewType: 'Uint32Array', },
+    { internalformat: 'RGBA32I', format: 'RGBA_INTEGER', type: 'INT',
+      viewType: 'Int32Array', },
+    { internalformat: 'RGBA32F', format: 'RGBA', type: 'FLOAT',
+      viewType: 'Float32Array', },
+  ];
+
+  var srcOffset = 3;
+  var tol = 0.5;
+
+  for (var idx = 0; idx < testCases.length; ++idx) {
+    run2DTest(gl, testCases[idx], gl.drawingBufferWidth, gl.drawingBufferHeight, srcOffset, tol);
+    run3DTest(gl, testCases[idx], gl.drawingBufferWidth, gl.drawingBufferHeight, srcOffset, tol);
+  }
+}
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-bad-args-from-dom-elements.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-bad-args-from-dom-elements.html
new file mode 100644
index 0000000000..f1616e81d7
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-bad-args-from-dom-elements.html
@@ -0,0 +1,128 @@
+<!--
+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">
+<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="c" width="16" height="16"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description('Tests texImage2D with invalid internalformat/format/type combinations from various dom elements');
+
+debug("<a href='https://www.khronos.org/registry/webgl/specs/latest/2.0/#TEXTURE_TYPES_FORMATS_FROM_DOM_ELEMENTS_TABLE'>Valid internalformat/format/type combinations</a>");
+debug("");
+
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("c", undefined, 2);
+
+var doTexImage = function(domElement) {
+    var tex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, tex);
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB10_A2UI, gl.RGBA_INTEGER, gl.UNSIGNED_INT_2_10_10_10_REV, domElement);
+    wtu.glErrorShouldBe(gl, [gl.INVALID_VALUE, gl.INVALID_ENUM, gl.INVALID_OPERATION], "TexImage2D taking RGB10_A2UI/RGBA_INTEGER/UNSIGNED_INT_2_10_10_10_REV should fail");
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RG8, gl.RG, gl.FLOAT, domElement);
+    wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "TexImage2D taking RG8/RG/FLOAT should fail");
+    gl.deleteTexture(tex);
+}
+
+var createCanvas2DContext = function(width, height) {
+    var canvas = document.createElement("canvas");
+    canvas.width = width;
+    canvas.height = height;
+    var ctx = canvas.getContext("2d");
+    ctx.fillRect(0, 0, width, height);
+    return ctx;
+};
+
+var testImage = function(test) {
+  debug("HTMLImageElement");
+  var img = wtu.makeImage(test.src, function() {
+    doTexImage(img);
+    setTimeout(runNextTest, 0);
+  });
+}
+
+var testVideo = function(test) {
+  debug("HTMLVideoElement (" + test.videoType + ")");
+  var video = wtu.makeVideo(test.src);
+  if(!video.canPlayType(test.videoType).replace(/no/, '')) {
+    debug(test.videoType + " unsupported");
+    setTimeout(runNextTest, 0);
+    return;
+  }
+  wtu.startPlayingAndWaitForVideo(video, function() {
+    doTexImage(video);
+    setTimeout(runNextTest, 0);
+  });
+}
+
+var testCanvas = function(test) {
+  var ctx = createCanvas2DContext(test.width, test.height);
+  debug("HTMLCanvasElement");
+  doTexImage(ctx.canvas);
+  setTimeout(runNextTest, 0);
+}
+
+var testImageData = function(test) {
+  var ctx = createCanvas2DContext(test.width, test.height);
+  var imageData = ctx.getImageData(0, 0, test.width, test.height);
+  debug("ImageData");
+  doTexImage(imageData);
+  setTimeout(runNextTest, 0);
+}
+
+var testImageBitmap = function(test) {
+  debug("ImageBitmap");
+  if(!window.createImageBitmap || !window.ImageBitmap) {
+    debug("ImageBitmap isn't supported");
+    setTimeout(runNextTest, 0);
+    return;
+  }
+  var ctx = createCanvas2DContext(test.width, test.height);
+  createImageBitmap(ctx.canvas, 0, 0, test.width, test.height).then(function(imageBitmap) {
+    doTexImage(imageBitmap);
+    setTimeout(runNextTest, 0);
+  }, function() {
+    debug("createImageBitmap was rejected");
+    setTimeout(runNextTest, 0);
+  });
+}
+
+var tests = [
+  { type: "canvas", width: 64, height: 64, run: testCanvas },
+  { type: "image", src: "../../../resources/red-green.png", run: testImage },
+  { type: "ImageBitmap",width: 64, height: 64, run: testImageBitmap },
+  { type: "ImageData", width: 64, height: 64, run: testImageData },
+  { type: "video", src: "../../../resources/red-green.mp4", videoType: 'video/mp4; codecs="avc1.42E01E, mp4a.40.2"', run: testVideo },
+  { type: "video", src: "../../../resources/red-green.bt601.vp9.webm", videoType: 'video/webm; codecs="vp9"', run: testVideo },
+  { type: "video", src: "../../../resources/red-green.webmvp8.webm", videoType: 'video/webm; codecs="vp8, vorbis"', run: testVideo },
+  { type: "video", src: "../../../resources/red-green.theora.ogv", videoType: 'video/ogg; codecs="theora, vorbis"', run: testVideo },
+];
+
+var testIndex = 0;
+var runNextTest = function() {
+  if (testIndex < tests.length) {
+    debug("");
+    var test = tests[testIndex];
+    ++testIndex;
+    test.run(test);
+  } else {
+    finishTest();
+  }
+};
+
+runNextTest();
+
+</script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-bad-args.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-bad-args.html
new file mode 100644
index 0000000000..514e5eebc1
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-bad-args.html
@@ -0,0 +1,57 @@
+<!--
+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">
+<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="c" width="16" height="16"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description('Tests texImage2D with invalid internalformat/format/type combinations');
+debug("This includes a regression test for <a href='https://bugs.chromium.org/p/chromium/issues/detail?id=656889'>Chromium Issue 656889</a>");
+
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("c", null, 2);
+var ext = null;
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+}
+
+var doTexImage = function(test) {
+    var tex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, tex);
+    gl.texImage2D(gl.TEXTURE_2D, 0, test.internalformat, 64, 64, 0, test.format, test.type, null);
+    wtu.glErrorShouldBe(gl, test.errors, "TexImage2D taking " + wtu.glEnumToString(gl, test.internalformat) + "/" +
+        wtu.glEnumToString(gl, test.format) + "/" + wtu.glEnumToString(gl, test.type));
+    gl.deleteTexture(tex);
+}
+
+var tests = [
+    { internalformat: gl.RGBA, format: gl.RGBA, type: gl.UNSIGNED_BYTE, errors: [gl.NO_ERROR] },
+    { internalformat: gl.RGBA, format: gl.RGBA, type: gl.FLOAT, errors: [gl.INVALID_OPERATION] },
+    { internalformat: gl.RGBA, format: gl.RGBA, type: gl.HALF_FLOAT, errors: [gl.INVALID_OPERATION] },
+    { internalformat: gl.LUMINANCE, format: gl.LUMINANCE, type: gl.FLOAT, errors: [gl.INVALID_OPERATION] },
+    { internalformat: gl.LUMINANCE_ALPHA, format: gl.LUMINANCE_ALPHA, type: gl.HALF_FLOAT, errors: [gl.INVALID_OPERATION] },
+    { internalformat: 0x822A /*GL_R16_EXT*/ , format: gl.RED, type: gl.UNSIGNED_SHORT, errors: [gl.INVALID_VALUE, gl.INVALID_OPERATION] },
+    { internalformat: gl.RED, format: gl.RED, type: gl.UNSIGNED_SHORT, errors: [gl.INVALID_VALUE, gl.INVALID_OPERATION] },
+];
+
+tests.forEach(doTexImage);
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-different-data-source.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-different-data-source.html
new file mode 100644
index 0000000000..0343f83786
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-image-with-different-data-source.html
@@ -0,0 +1,51 @@
+<!--
+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">
+<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="canvas1" width="16" height="16"></canvas>
+<canvas id="canvas2" width="16" height="16"></canvas>
+<canvas id="c" width="16" height="16"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description('Tests texImage2D with different data source');
+
+var wtu = WebGLTestUtils;
+var c = document.getElementById("c");
+var gl = wtu.create3DContext("canvas1", undefined, 2);
+var tex = gl.createTexture();
+
+// Do TexImage2D taking a canvas source first.
+gl.bindTexture(gl.TEXTURE_2D, tex);
+gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, gl.RGBA, gl.UNSIGNED_BYTE, c);
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "TexImage2D taking a canvas source should succeed");
+gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB10_A2UI, 16, 16, 0, gl.RGBA_INTEGER, gl.UNSIGNED_INT_2_10_10_10_REV, null);
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Teximage2D taking a null array buffer should succeed");
+gl.deleteTexture(tex);
+
+// Do TexImage2D taking an array buffer first.
+gl = wtu.create3DContext("canvas2", undefined, 2);
+tex = gl.createTexture();
+gl.bindTexture(gl.TEXTURE_2D, tex);
+gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB10_A2UI, 16, 16, 0, gl.RGBA_INTEGER, gl.UNSIGNED_INT_2_10_10_10_REV, null);
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Teximage2D taking a null array buffer should succeed");
+gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB10_A2UI, gl.RGBA_INTEGER, gl.UNSIGNED_INT_2_10_10_10_REV, c);
+wtu.glErrorShouldBe(gl, [gl.INVALID_VALUE, gl.INVALID_ENUM], "TexImage2D taking RGB10_A2UI internalformat and a canvas source should fail");
+gl.deleteTexture(tex);
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-input-validation.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-input-validation.html
new file mode 100644
index 0000000000..ec73e9e1d9
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-input-validation.html
@@ -0,0 +1,24 @@
+<!--
+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">
+<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>
+<script>
+var contextVersion = 2;
+</script>
+<script src="../../../js/tests/tex-input-validation.js"></script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-mipmap-levels.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-mipmap-levels.html
new file mode 100644
index 0000000000..adf3d20d17
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-mipmap-levels.html
@@ -0,0 +1,225 @@
+<!--
+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 texture mipmap level conformance test.</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="example" width="2" height="2" style="width: 2px; height: 2px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">
+uniform vec4 uMult;
+attribute vec4 vPosition;
+attribute vec2 texCoord0;
+varying vec2 texCoord;
+void main()
+{
+    gl_Position = vPosition * uMult;
+    texCoord = texCoord0;
+}
+</script>
+
+<script id="fshader" type="x-shader/x-fragment">
+precision mediump float;
+uniform sampler2D tex;
+varying vec2 texCoord;
+void main()
+{
+    gl_FragColor = texture2D(tex, texCoord);
+}
+</script>
+
+<script id="vshader_texsize" type="x-shader/x-vertex">#version 300 es
+in vec4 vPosition;
+void main()
+{
+    gl_Position = vPosition;
+}
+</script>
+
+<script id="fshader_texsize_2d" type="x-shader/x-fragment">#version 300 es
+
+precision mediump float;
+uniform sampler2D tex;
+uniform int lod;
+uniform ivec2 texSize;
+out vec4 fragColor;
+void main()
+{
+    fragColor = (textureSize(tex, lod) == texSize ? vec4(255, 0, 0, 255) : vec4(0, 0, 0, 255));
+}
+</script>
+
+
+<script>
+"use strict";
+description(document.title);
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("example", undefined, 2);
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+
+(function() {
+  debug("");
+  debug("test mipmap level ranges");
+  var tex = gl.createTexture();
+  wtu.setupUnitQuad(gl, 0, 1);
+  var program = wtu.setupProgram(
+      gl, ['vshader', 'fshader'], ['vPosition', 'texCoord0'], [0, 1]);
+
+  gl.disable(gl.DEPTH_TEST);
+  gl.disable(gl.BLEND);
+  gl.uniform1i(gl.getUniformLocation(program, "tex"), 0);
+
+  var multLoc = gl.getUniformLocation(program, "uMult");
+  gl.uniform4f(multLoc, 1, 1, 1, 1);
+
+  // Test that filling partial levels is enough for mipmapping.
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  wtu.fillTexture(gl, tex, 8, 8, [255, 0, 0, 255], 2, gl.RGBA, gl.UNSIGNED_BYTE);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "fillTexture(8x8, level=2) should succeed");
+  wtu.fillTexture(gl, tex, 4, 4, [0, 255, 0, 255], 3, gl.RGBA, gl.UNSIGNED_BYTE);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "fillTexture(4x4, level=3) should succeed");
+  wtu.fillTexture(gl, tex, 2, 2, [0, 0, 255, 255], 4, gl.RGBA, gl.UNSIGNED_BYTE);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "fillTexture(2x2, level=4) should succeed");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 2);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_BASE_LEVEL) should succeed");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAX_LEVEL, 4);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MAX_LEVEL) should succeed");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MAG_FILTER) should succeed");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MIN_FILTER) should succeed");
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearAndDrawQuad should succeed");
+  wtu.checkCanvas(gl, [0, 0, 255, 255], "filling partial levels: should draw with [0, 0, 255, 255]");
+
+  // Test that generateMipmap works with partial levels.
+  gl.generateMipmap(gl.TEXTURE_2D);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "generateMipmap should succeed");
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "generateMipmap with partial levels: should draw with [255, 0, 0, 255]");
+  gl.deleteTexture(tex);
+
+  // Test incompleteless for partial levels.
+  tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  wtu.fillTexture(gl, tex, 8, 8, [255, 0, 0, 255], 2, gl.RGBA, gl.UNSIGNED_BYTE);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "fillTexture(8x8, level=2) should succeed");
+  wtu.fillTexture(gl, tex, 4, 4, [255, 0, 0, 255], 3, gl.RGBA, gl.UNSIGNED_BYTE);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "fillTexture(4x4, level=3) should succeed");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 2);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_BASE_LEVEL) should succeed");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAX_LEVEL, 4);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MAX_LEVEL) should succeed");
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearAndDrawQuad should succeed");
+  wtu.checkCanvas(gl, [0, 0, 0, 255], "incomplete texture should draw with [0, 0, 0, 255]");
+  gl.deleteTexture(tex);
+
+  // Test base level texture isn't specified.
+  tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  wtu.fillTexture(gl, tex, 8, 8, [255, 0, 0, 255], 2, gl.RGBA, gl.UNSIGNED_BYTE);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "fillTexture(8x8, level=2) should succeed");
+  wtu.fillTexture(gl, tex, 4, 4, [255, 0, 0, 255], 3, gl.RGBA, gl.UNSIGNED_BYTE);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "fillTexture(4x4, level=3) should succeed");
+  wtu.fillTexture(gl, tex, 2, 2, [0, 0, 255, 255], 4, gl.RGBA, gl.UNSIGNED_BYTE);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "fillTexture(2x2, level=4) should succeed");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 1);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_BASE_LEVEL) should succeed");
+  gl.generateMipmap(gl.TEXTURE_2D);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "generateMipmap should fail if base level texture is not specified");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 2);
+  gl.generateMipmap(gl.TEXTURE_2D);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "generateMipmap should succeed");
+  gl.deleteTexture(tex);
+
+  // Test 3D texture.
+  var tex3d = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_3D, tex3d);
+  gl.texImage3D( gl.TEXTURE_3D, 0, gl.RGBA, 8, 8, 8, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(8 * 8 * 8 * 4));
+  gl.generateMipmap(gl.TEXTURE_3D);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "generateMipmap should succeed");
+  gl.texSubImage3D(gl.TEXTURE_3D, 1, 0, 0, 0, 4, 4, 4, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4 * 4 * 4 * 4));
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D should succeed");
+  gl.deleteTexture(tex3d);
+
+  // Test 2D array texture.
+  var tex2dArray = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D_ARRAY, tex2dArray);
+  gl.texImage3D( gl.TEXTURE_2D_ARRAY, 0, gl.RGBA, 8, 8, 4, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(8 * 8 * 4 * 4));
+  gl.generateMipmap(gl.TEXTURE_2D_ARRAY);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "generateMipmap should succeed");
+  gl.texSubImage3D(gl.TEXTURE_2D_ARRAY, 1, 0, 0, 0, 4, 4, 4, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4 * 4 * 4 * 4));
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D should succeed");
+  gl.deleteTexture(tex2dArray);
+
+  // Test sized internal format should be both color-renderable and texture-filterable
+  tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+  gl.generateMipmap(gl.TEXTURE_2D);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "generateMipmap should fail for zero-size texture");
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, 8, 8, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(8 * 8 * 4));
+  gl.generateMipmap(gl.TEXTURE_2D);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "generateMipmap should succeed");
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8UI, 8, 8, 0, gl.RGBA_INTEGER, gl.UNSIGNED_BYTE, new Uint8Array(8 * 8 * 4));
+  gl.generateMipmap(gl.TEXTURE_2D);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "generateMipmap should fail for non-texture-filterable format");
+  if (gl.getExtension('EXT_color_buffer_float')) {
+      gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA32F, 8, 8, 0, gl.RGBA, gl.FLOAT, new Float32Array(8 * 8 * 4));
+      gl.generateMipmap(gl.TEXTURE_2D);
+      wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "generateMipmap should fail for float texture");
+  }
+  if (gl.getExtension('EXT_color_buffer_float') && gl.getExtension('OES_texture_float_linear')) {
+      gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA32F, 0, 0, 0, gl.RGBA, gl.FLOAT, null);
+      gl.generateMipmap(gl.TEXTURE_2D);
+      wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "generateMipmap should fail for zero-size texture");
+      gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA32F, 8, 8, 0, gl.RGBA, gl.FLOAT, new Float32Array(8 * 8 * 4));
+      gl.generateMipmap(gl.TEXTURE_2D);
+      wtu.glErrorShouldBe(gl, gl.NO_ERROR, "generateMipmap should succeed");
+  }
+  gl.deleteTexture(tex);
+
+  // Test textureSize should work correctly with non-zero base level for texStorage2D
+  var program = wtu.setupProgram(
+      gl, ['vshader_texsize', 'fshader_texsize_2d'], ['vPosition'], [0]);
+
+  gl.uniform1i(gl.getUniformLocation(program, "tex"), 0);
+  gl.uniform1i(gl.getUniformLocation(program, "lod"), 1);
+  gl.uniform2i(gl.getUniformLocation(program, "texSize"), 7, 4);
+  tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MAG_FILTER) should succeed");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MIN_FILTER) should succeed");
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 1);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_BASE_LEVEL) should succeed");
+  gl.texStorage2D(gl.TEXTURE_2D, 4, gl.RGBA8, 31, 17);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texStorage2D should succeed");
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearAndDrawQuad should succeed");
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "non-zero base level texStorage2D: should draw with [255, 0, 0, 255]");
+  gl.deleteTexture(tex);
+
+})();
+
+var successfullyParsed = true;
+
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-new-formats.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-new-formats.html
new file mode 100644
index 0000000000..df10edb4d3
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-new-formats.html
@@ -0,0 +1,565 @@
+<!--
+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>Conformance test for WebGL2 texture image formats specification</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>
+<canvas id="canvas" width="64" height="64"> </canvas>
+<div id="console"></div>
+
+
+<script>
+"use strict";
+description("This test verifies that texture image specification entry points " +
+            "accept new formats introduced in WebGL2, and accept sized internalformats.");
+
+debug("");
+
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("canvas");
+var gl = wtu.create3DContext(canvas, null, 2);
+var vao = null;
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+
+    runTexFormatsTest();
+
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+}
+
+function enumToString(value) {
+  return wtu.glEnumToString(gl, value);
+}
+
+function runTexFormatsTest()
+{
+    // texFormats is Table 3.2 and Table 3.3 from the OpenGL ES 3.0.4 spec.
+    var texFormats = [
+        {
+            sizedformat: "RGBA8",
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "RGB5_A1",
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "RGBA4",
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "SRGB8_ALPHA8",
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "RGBA8_SNORM",
+            unsizedformat: "RGBA",
+            type: "BYTE",
+        },
+        {
+            sizedformat: "RGBA4",
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_SHORT_4_4_4_4",
+        },
+        {
+            sizedformat: "RGB5_A1",
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_SHORT_5_5_5_1",
+        },
+        {
+            sizedformat: "RGB10_A2",
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_INT_2_10_10_10_REV",
+        },
+        {
+            sizedformat: "RGB5_A1",
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_INT_2_10_10_10_REV",
+        },
+        {
+            sizedformat: "RGBA16F",
+            unsizedformat: "RGBA",
+            type: "HALF_FLOAT",
+        },
+        {
+            sizedformat: "RGBA32F",
+            unsizedformat: "RGBA",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "RGBA16F",
+            unsizedformat: "RGBA",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "RGBA8UI",
+            unsizedformat: "RGBA_INTEGER",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "RGBA8I",
+            unsizedformat: "RGBA_INTEGER",
+            type: "BYTE",
+        },
+        {
+            sizedformat: "RGBA16UI",
+            unsizedformat: "RGBA_INTEGER",
+            type: "UNSIGNED_SHORT",
+        },
+        {
+            sizedformat: "RGBA16I",
+            unsizedformat: "RGBA_INTEGER",
+            type: "SHORT",
+        },
+        {
+            sizedformat: "RGBA32UI",
+            unsizedformat: "RGBA_INTEGER",
+            type: "UNSIGNED_INT",
+        },
+        {
+            sizedformat: "RGBA32I",
+            unsizedformat: "RGBA_INTEGER",
+            type: "INT",
+        },
+        {
+            sizedformat: "RGB10_A2UI",
+            unsizedformat: "RGBA_INTEGER",
+            type: "UNSIGNED_INT_2_10_10_10_REV",
+        },
+        {
+            sizedformat: "RGB8",
+            unsizedformat: "RGB",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "RGB565",
+            unsizedformat: "RGB",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "SRGB8",
+            unsizedformat: "RGB",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "RGB8_SNORM",
+            unsizedformat: "RGB",
+            type: "BYTE",
+        },
+        {
+            sizedformat: "RGB565",
+            unsizedformat: "RGB",
+            type: "UNSIGNED_SHORT_5_6_5",
+        },
+        {
+            sizedformat: "R11F_G11F_B10F",
+            unsizedformat: "RGB",
+            type: "UNSIGNED_INT_10F_11F_11F_REV",
+        },
+        {
+            sizedformat: "RGB9_E5",
+            unsizedformat: "RGB",
+            type: "UNSIGNED_INT_5_9_9_9_REV",
+        },
+        {
+            sizedformat: "RGB16F",
+            unsizedformat: "RGB",
+            type: "HALF_FLOAT",
+        },
+        {
+            sizedformat: "R11F_G11F_B10F",
+            unsizedformat: "RGB",
+            type: "HALF_FLOAT",
+        },
+        {
+            sizedformat: "RGB9_E5",
+            unsizedformat: "RGB",
+            type: "HALF_FLOAT",
+        },
+        {
+            sizedformat: "RGB32F",
+            unsizedformat: "RGB",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "RGB16F",
+            unsizedformat: "RGB",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "R11F_G11F_B10F",
+            unsizedformat: "RGB",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "RGB9_E5",
+            unsizedformat: "RGB",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "RGB8UI",
+            unsizedformat: "RGB_INTEGER",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "RGB8I",
+            unsizedformat: "RGB_INTEGER",
+            type: "BYTE",
+        },
+        {
+            sizedformat: "RGB16UI",
+            unsizedformat: "RGB_INTEGER",
+            type: "UNSIGNED_SHORT",
+        },
+        {
+            sizedformat: "RGB16I",
+            unsizedformat: "RGB_INTEGER",
+            type: "SHORT",
+        },
+        {
+            sizedformat: "RGB32UI",
+            unsizedformat: "RGB_INTEGER",
+            type: "UNSIGNED_INT",
+        },
+        {
+            sizedformat: "RGB32I",
+            unsizedformat: "RGB_INTEGER",
+            type: "INT",
+        },
+        {
+            sizedformat: "RG8",
+            unsizedformat: "RG",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "RG8_SNORM",
+            unsizedformat: "RG",
+            type: "BYTE",
+        },
+        {
+            sizedformat: "RG16F",
+            unsizedformat: "RG",
+            type: "HALF_FLOAT",
+        },
+        {
+            sizedformat: "RG32F",
+            unsizedformat: "RG",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "RG16F",
+            unsizedformat: "RG",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "RG8UI",
+            unsizedformat: "RG_INTEGER",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "RG8I",
+            unsizedformat: "RG_INTEGER",
+            type: "BYTE",
+        },
+        {
+            sizedformat: "RG16UI",
+            unsizedformat: "RG_INTEGER",
+            type: "UNSIGNED_SHORT",
+        },
+        {
+            sizedformat: "RG16I",
+            unsizedformat: "RG_INTEGER",
+            type: "SHORT",
+        },
+        {
+            sizedformat: "RG32UI",
+            unsizedformat: "RG_INTEGER",
+            type: "UNSIGNED_INT",
+        },
+        {
+            sizedformat: "RG32I",
+            unsizedformat: "RG_INTEGER",
+            type: "INT",
+        },
+        {
+            sizedformat: "R8",
+            unsizedformat: "RED",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "R8_SNORM",
+            unsizedformat: "RED",
+            type: "BYTE",
+        },
+        {
+            sizedformat: "R16F",
+            unsizedformat: "RED",
+            type: "HALF_FLOAT",
+        },
+        {
+            sizedformat: "R32F",
+            unsizedformat: "RED",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "R16F",
+            unsizedformat: "RED",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "R8UI",
+            unsizedformat: "RED_INTEGER",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: "R8I",
+            unsizedformat: "RED_INTEGER",
+            type: "BYTE",
+        },
+        {
+            sizedformat: "R16UI",
+            unsizedformat: "RED_INTEGER",
+            type: "UNSIGNED_SHORT",
+        },
+        {
+            sizedformat: "R16I",
+            unsizedformat: "RED_INTEGER",
+            type: "SHORT",
+        },
+        {
+            sizedformat: "R32UI",
+            unsizedformat: "RED_INTEGER",
+            type: "UNSIGNED_INT",
+        },
+        {
+            sizedformat: "R32I",
+            unsizedformat: "RED_INTEGER",
+            type: "INT",
+        },
+        {
+            sizedformat: "DEPTH_COMPONENT16",
+            unsizedformat: "DEPTH_COMPONENT",
+            type: "UNSIGNED_SHORT",
+        },
+        {
+            sizedformat: "DEPTH_COMPONENT24",
+            unsizedformat: "DEPTH_COMPONENT",
+            type: "UNSIGNED_INT",
+        },
+        {
+            sizedformat: "DEPTH_COMPONENT16",
+            unsizedformat: "DEPTH_COMPONENT",
+            type: "UNSIGNED_INT",
+        },
+        {
+            sizedformat: "DEPTH_COMPONENT32F",
+            unsizedformat: "DEPTH_COMPONENT",
+            type: "FLOAT",
+        },
+        {
+            sizedformat: "DEPTH24_STENCIL8",
+            unsizedformat: "DEPTH_STENCIL",
+            type: "UNSIGNED_INT_24_8",
+        },
+        // No good typed array type for this format, just allow this format when  pixel is null.
+        {
+            sizedformat: "DEPTH32F_STENCIL8",
+            unsizedformat: "DEPTH_STENCIL",
+            type: "FLOAT_32_UNSIGNED_INT_24_8_REV",
+        },
+        // internalFormat of texImage2D may be unsized format according Table 3.3 in OpenGL ES 3.0.4 spec.
+        {
+            sizedformat: undefined,
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: undefined,
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_SHORT_4_4_4_4",
+        },
+        {
+            sizedformat: undefined,
+            unsizedformat: "RGBA",
+            type: "UNSIGNED_SHORT_5_5_5_1",
+        },
+        {
+            sizedformat: undefined,
+            unsizedformat: "RGB",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: undefined,
+            unsizedformat: "RGB",
+            type: "UNSIGNED_SHORT_5_6_5",
+        },
+        {
+            sizedformat: undefined,
+            unsizedformat: "LUMINANCE_ALPHA",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: undefined,
+            unsizedformat: "LUMINANCE",
+            type: "UNSIGNED_BYTE",
+        },
+        {
+            sizedformat: undefined,
+            unsizedformat: "ALPHA",
+            type: "UNSIGNED_BYTE",
+        },
+    ];
+
+    texFormats.forEach(function(texformat){
+        debug("");
+        debug("Testing sized format " + texformat.sizedformat
+              + ", unsized format " + texformat.unsizedformat
+              + ", type " + texformat.type);
+        var tex = gl.createTexture();
+        gl.bindTexture(gl.TEXTURE_2D, tex);
+
+        var sizedformat = gl[texformat.sizedformat];
+        var unsizedformat = gl[texformat.unsizedformat];
+        var type = gl[texformat.type];
+
+        // prepare some good data to feed texImage2D and friends for this type
+        var data;
+        switch(type) {
+            case gl.UNSIGNED_BYTE:
+                data = new Uint8Array(4);
+                break;
+            case gl.BYTE:
+                data = new Int8Array(4);
+                break;
+            case gl.UNSIGNED_SHORT:
+            case gl.UNSIGNED_SHORT_4_4_4_4:
+            case gl.UNSIGNED_SHORT_5_5_5_1:
+            case gl.UNSIGNED_SHORT_5_6_5:
+            case gl.HALF_FLOAT:
+                data = new Uint16Array(4);
+                break;
+            case gl.SHORT:
+                data = new Int16Array(4);
+                break;
+            case gl.UNSIGNED_INT:
+            case gl.UNSIGNED_INT_5_9_9_9_REV:
+            case gl.UNSIGNED_INT_10F_11F_11F_REV:
+            case gl.UNSIGNED_INT_2_10_10_10_REV:
+            case gl.UNSIGNED_INT_24_8:
+                data = new Uint32Array(4);
+                break;
+            case gl.INT:
+                data = new Int32Array(4);
+                break;
+            case gl.FLOAT:
+                data = new Float32Array(4);
+                break;
+            case gl.FLOAT_32_UNSIGNED_INT_24_8_REV:
+                data = null;
+        }
+
+        // prepare some bad data that doesn't fit this type
+        var baddata = (data instanceof Float32Array)
+                      ? new Uint8Array(4)
+                      : new Float32Array(4);
+
+        // test texImage2D with unsized internalformat
+        if (!sizedformat) {
+            gl.texImage2D(gl.TEXTURE_2D, 0, unsizedformat, 1, 1, 0, unsizedformat, type, data);
+            wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D should succeed with unsized internalformat");
+            gl.texImage2D(gl.TEXTURE_2D, 0, unsizedformat, 1, 1, 0, unsizedformat, type, baddata);
+            wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage2D should fail with unsized internalformat and data of wrong type");
+        } else {
+            // test texImage2D with sized internalformat
+            gl.texImage2D(gl.TEXTURE_2D, 0, sizedformat, 1, 1, 0, unsizedformat, type, data);
+            wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D should succeed with sized internalformat");
+            gl.texImage2D(gl.TEXTURE_2D, 0, sizedformat, 1, 1, 0, unsizedformat, type, baddata);
+            wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage2D should fail with sized internalformat and data of wrong type");
+        }
+
+        // test texSubImage2D
+        if (gl.FLOAT_32_UNSIGNED_INT_24_8_REV != type) {
+            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 1, 1, unsizedformat, type, data);
+            wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D should succeed");
+            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 1, 1, unsizedformat, type, baddata);
+            wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage2D should fail with data of wrong type");
+        }
+
+        // test texStorage2D
+        if (sizedformat) {
+            gl.texStorage2D(gl.TEXTURE_2D, 1, sizedformat, 1, 1);
+            wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texStorage2D should succeed");
+            if (gl.FLOAT_32_UNSIGNED_INT_24_8_REV != type) {
+                gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 1, 1, unsizedformat, type, data);
+                wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D should succeed on immutable-format texture");
+                gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 1, 1, unsizedformat, type, baddata);
+                wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage2D should fail on immutable-format texture with data of wrong type");
+            }
+        }
+
+        // Test a 3D texture.
+        // Formats containing a depth component can't be used for 3D textures.
+        var isdepthformat =
+            unsizedformat == gl.DEPTH_COMPONENT ||
+            unsizedformat == gl.DEPTH_STENCIL;
+        if (!isdepthformat) {
+            var tex3d = gl.createTexture();
+            gl.bindTexture(gl.TEXTURE_3D, tex3d);
+
+            // test texImage3D with unsized internalformat
+            if (!sizedformat) {
+                gl.texImage3D(gl.TEXTURE_3D, 0, unsizedformat, 1, 1, 1, 0, unsizedformat, type, data);
+                wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D should succeed with unsized internalformat");
+                gl.texImage3D(gl.TEXTURE_3D, 0, unsizedformat, 1, 1, 1, 0, unsizedformat, type, baddata);
+                wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D should fail with unsized internalformat and data of wrong type");
+            } else {
+                // test texImage3D with sized internalformat
+                gl.texImage3D(gl.TEXTURE_3D, 0, sizedformat, 1, 1, 1, 0, unsizedformat, type, data);
+                wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D should succeed with sized internalformat");
+                gl.texImage3D(gl.TEXTURE_3D, 0, sizedformat, 1, 1, 1, 0, unsizedformat, type, baddata);
+                wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D should fail with sized internalformat and data of wrong type");
+            }
+
+            // test texSubImage3D
+            gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, 1, 1, 1, unsizedformat, type, data);
+            wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D should succeed");
+            gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, 1, 1, 1, unsizedformat, type, baddata);
+            wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D should fail with data of wrong type");
+
+            if (sizedformat) {
+                gl.texStorage3D(gl.TEXTURE_3D, 1, sizedformat, 1, 1, 1);
+                wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texStorage3D should succeed");
+                gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, 1, 1, 1, unsizedformat, type, data);
+                wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D should succeed on immutable-format texture");
+                gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, 1, 1, 1, unsizedformat, type, baddata);
+                wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D should fail on immutable-format texture with data of wrong type");
+            }
+        }
+    });
+}
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-srgb-mipmap.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-srgb-mipmap.html
new file mode 100644
index 0000000000..9764987d8d
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-srgb-mipmap.html
@@ -0,0 +1,220 @@
+<!--
+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 texture mipmap conformance test.</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="example" width="4" height="4" style="width: 16px; height: 16px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">
+attribute vec4 vPosition;
+attribute vec2 texCoord0;
+varying vec2 texCoord;
+void main()
+{
+    gl_Position = vPosition;
+    texCoord = texCoord0;
+}
+</script>
+
+<script id="fshader" type="x-shader/x-fragment">
+precision mediump float;
+uniform sampler2D tex;
+varying vec2 texCoord;
+void main()
+{
+    gl_FragColor = texture2D(tex, texCoord);
+}
+</script>
+<script>
+"use strict";
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("example");
+var gl = wtu.create3DContext(canvas, undefined, 2);
+
+description("Test srgb emulation for generateMipmap.");
+function generateMipmap()
+{
+    debug("Generate mipmaps for sRGB texture");
+
+    wtu.setupUnitQuad(gl, 0, 1);
+    var program = wtu.setupProgram(
+        gl, ['vshader', 'fshader'], ['vPosition', 'texCoord0'], [0, 1]);
+
+    gl.disable(gl.DEPTH_TEST);
+    gl.disable(gl.BLEND);
+
+    var colors = {
+        blank: [0, 0, 0, 0],
+        srgba: [0, 63, 127, 255],
+    };
+
+    var texLoc = gl.getUniformLocation(program, "tex");
+    gl.uniform1i(texLoc, 0);
+
+    var width = 128;
+    var height = 128;
+    canvas.width = width;
+    canvas.height = height;
+    gl.viewport(0, 0, width, height);
+
+    var srgbTex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, srgbTex);
+    // Set full texture as srgba color first.
+    wtu.fillTexture(gl, srgbTex, width, height, colors['srgba'], 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.SRGB8_ALPHA8);
+    // Set up-left region of the texture as red color.
+    // In order to make sure bi-linear interpolation operates on different colors, red region
+    // is 1 pixel smaller than a quarter of the full texture on each side.
+    var redWidth = width / 2 - 1;
+    var redHeight = height / 2 - 1;
+    var buf = new Uint8Array(redWidth * redHeight * 4);
+    for (var i = 0; i < redWidth * redHeight; i++) {
+        buf[4 * i + 0] = 255;
+        buf[4 * i + 1] = 0;
+        buf[4 * i + 2] = 0;
+        buf[4 * i + 3] = 255;
+    }
+    gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, redWidth, redHeight, gl.RGBA, gl.UNSIGNED_BYTE, buf);
+    gl.generateMipmap(gl.TEXTURE_2D);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_NEAREST);
+
+    // Decode the srgba texture to a linear texture which will be used as reference.
+    var linearTex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, linearTex);
+    wtu.fillTexture(gl, linearTex, width, height, wtu.sRGBToLinear(colors['srgba']), 0, gl.RGBA, gl.UNSIGNED_BYTE);
+    // Set up-left region of the texture as red color.
+    // In order to make sure bi-linear interpolation operates on different colors, red region
+    // is 1 pixel smaller than a quarter of the full texture on each side.
+    for (var i = 0; i < redWidth * redHeight; i++) {
+        buf[4 * i + 0] = 255;
+        buf[4 * i + 1] = 0;
+        buf[4 * i + 2] = 0;
+        buf[4 * i + 3] = 255;
+    }
+    gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, redWidth, redHeight, gl.RGBA, gl.UNSIGNED_BYTE, buf);
+    gl.generateMipmap(gl.TEXTURE_2D);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_NEAREST);
+
+    // Change canvas to a small size.
+    width = 64;
+    height = 64;
+    canvas.width = width;
+    canvas.height = height;
+    gl.viewport(0, 0, width, height);
+
+    // Draw with srgb texture and linear texture respectively.
+    gl.bindTexture(gl.TEXTURE_2D, srgbTex);
+    wtu.clearAndDrawUnitQuad(gl);
+    var result = new Uint8Array(width * height * 4);
+    gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, result);
+    gl.bindTexture(gl.TEXTURE_2D, linearTex);
+    wtu.clearAndDrawUnitQuad(gl);
+    var reference = new Uint8Array(width * height * 4);
+    gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, reference);
+
+    gl.deleteTexture(srgbTex);
+    gl.deleteTexture(linearTex);
+
+    var tolerance = 7;
+    var diff = new Uint8Array(width * height * 4);
+    var failed = wtu.comparePixels(result, reference, tolerance, diff);
+    if (failed) {
+        testFailed("Generate wrong mipmaps for sRGB texture.");
+        wtu.displayImageDiff(result, reference, diff, width, height);
+    } else {
+        testPassed("Generate correct mipmaps for sRGB texture.");
+    }
+}
+
+function generateMipmap_immutableTexture()
+{
+    debug("Generate mipmaps for immutable texture.");
+    var tex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, tex);
+    gl.texStorage2D(gl.TEXTURE_2D, Math.log2(canvas.width), gl.SRGB8_ALPHA8, canvas.width, canvas.height);
+    gl.generateMipmap(gl.TEXTURE_2D);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "GenerateMipmap should succeed.");
+
+    gl.deleteTexture(tex);
+}
+
+function generateMipmap_widthHeightNotEqual()
+{
+    debug("Generate mipmaps when width and height are not equal.");
+    var tex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, tex);
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.SRGB8_ALPHA8, 64, 32, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+    gl.generateMipmap(gl.TEXTURE_2D);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "GenerateMipmap should succeed.");
+
+    gl.deleteTexture(tex);
+}
+
+function generateMipmap_maxLevelLessThanFullMipmapLevel()
+{
+    debug("Generate mipmaps when maxLevel is less than full mipmap level.");
+
+    wtu.setupUnitQuad(gl, 0, 1);
+    var program = wtu.setupProgram(
+        gl, ['vshader', 'fshader'], ['vPosition', 'texCoord0'], [0, 1]);
+
+    var colors = [0, 63, 127, 255];
+
+    var texLoc = gl.getUniformLocation(program, "tex");
+    gl.uniform1i(texLoc, 0);
+
+    var width = 16;
+    var height = 16;
+    canvas.width = width;
+    canvas.height = height;
+    gl.viewport(0, 0, width, height);
+
+    var srgbTex = gl.createTexture();
+    gl.bindTexture(gl.TEXTURE_2D, srgbTex);
+    wtu.fillTexture(gl, srgbTex, width, height, colors, 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.SRGB8_ALPHA8);
+
+    // Set max level, check if the max level mipmap is generated.
+    var max_level = 3;
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAX_LEVEL, max_level);
+    gl.generateMipmap(gl.TEXTURE_2D);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_NEAREST);
+
+    width >>= max_level;
+    height >>= max_level;
+    canvas.width = width;
+    canvas.height = height;
+    gl.viewport(0, 0, width, height);
+
+    gl.bindTexture(gl.TEXTURE_2D, srgbTex);
+    wtu.clearAndDrawUnitQuad(gl);
+
+    var reference = wtu.sRGBToLinear(colors);
+    var msg;
+    wtu.checkCanvasRect(gl, 0, 0, width, height, reference, msg, [1,1,1,1]);
+
+    gl.deleteTexture(srgbTex);
+}
+
+generateMipmap();
+generateMipmap_immutableTexture();
+generateMipmap_widthHeightNotEqual();
+generateMipmap_maxLevelLessThanFullMipmapLevel();
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
+
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-2d.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-2d.html
new file mode 100644
index 0000000000..34bff4d3a3
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-2d.html
@@ -0,0 +1,290 @@
+<!--
+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>texStorage2D conformance test</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>
+<canvas id="canvas" width="64" height="64"> </canvas>
+<div id="console"></div>
+
+
+<script>
+"use strict";
+description("This test verifies the functionality of texStorage2D.");
+
+debug("");
+
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("canvas");
+var gl = wtu.create3DContext(canvas, null, 2);
+var vao = null;
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+
+    runTexStorage2DTest();
+
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+}
+
+function enumToString(value) {
+  return wtu.glEnumToString(gl, value);
+}
+
+function runTexStorage2DTest()
+{
+    var texStorage2DTestCases = [
+        {
+            target: gl.TEXTURE_2D,
+            mipmap: false,
+            sizedformat: gl.RGBA8,
+            unsizedformat: gl.RGBA,
+            type: gl.UNSIGNED_BYTE,
+            alpha: true,
+            redpixel: new Uint8Array([0xff, 0x00, 0x00, 0x00]),
+        },
+        {
+            target: gl.TEXTURE_2D,
+            mipmap: true,
+            sizedformat: gl.R11F_G11F_B10F,
+            unsizedformat: gl.RGB,
+            type: gl.UNSIGNED_INT_10F_11F_11F_REV,
+            alpha: false,
+            // Red is unsigned floating point with 5 exponent bits followed by 6 mantissa bits.
+            // The effective value is 2^(exponent - 15) * (1 + mantissa / 64)
+            // See OpenGL ES 3.0.3 spec, section 2.1.3
+            // Here we want to encode the value 1.0, which we achieve with a zero mantissa
+            // and an exponent of 15.
+            redpixel: new Uint32Array([15<<6]),
+        },
+        {
+            target: gl.TEXTURE_2D,
+            mipmap: true,
+            sizedformat: gl.RGBA32F,
+            unsizedformat: gl.RGBA,
+            type: gl.FLOAT,
+            alpha: true,
+            redpixel: new Float32Array([1, 0, 0, 0]),
+        },
+        {
+            target: gl.TEXTURE_CUBE_MAP,
+            mipmap: true,
+            sizedformat: gl.RGBA8,
+            unsizedformat: gl.RGBA,
+            type: gl.UNSIGNED_BYTE,
+            alpha: true,
+            redpixel: new Uint8Array([0xff, 0x00, 0x00, 0x00]),
+        },
+        {
+            target: gl.TEXTURE_CUBE_MAP,
+            mipmap: false,
+            sizedformat: gl.RGB8,
+            unsizedformat: gl.RGB,
+            type: gl.UNSIGNED_BYTE,
+            alpha: false,
+            redpixel: new Uint8Array([0xff, 0x00, 0x00]),
+        },
+        {
+            target: gl.TEXTURE_CUBE_MAP,
+            mipmap: true,
+            sizedformat: gl.RGB10_A2UI,
+            unsizedformat: gl.UNSIGNED_INT_2_10_10_10_REV, // type enum, bad as format
+        },
+        {
+            target: gl.TEXTURE_CUBE_MAP,
+            mipmap: false,
+            sizedformat: gl.R11F_G11F_B10F,
+            unsizedformat: gl.RGB,
+        }
+    ];
+
+    texStorage2DTestCases.forEach(function(testcase){
+        var target = testcase.target;
+        var imageTargets;
+
+        if (target == gl.TEXTURE_2D) {
+            imageTargets = [ gl.TEXTURE_2D ];
+        } else {
+            imageTargets = [ gl.TEXTURE_CUBE_MAP_POSITIVE_X,
+                             gl.TEXTURE_CUBE_MAP_NEGATIVE_X,
+                             gl.TEXTURE_CUBE_MAP_POSITIVE_Y,
+                             gl.TEXTURE_CUBE_MAP_NEGATIVE_Y,
+                             gl.TEXTURE_CUBE_MAP_POSITIVE_Z,
+                             gl.TEXTURE_CUBE_MAP_NEGATIVE_Z ];
+        }
+
+        var tex = gl.createTexture();
+        gl.bindTexture(target, tex);
+        var texsize = 4;
+        var levels = testcase.mipmap
+                     ? Math.floor(Math.log(texsize) / Math.log(2)) + 1
+                     : 1;
+
+        debug("");
+        debug("Testing texStorage2D with target " + enumToString(target) + ", " +
+              (testcase.mipmap ? "mipmap" : "no mipmap") + ", " +
+              "internalformat: " + enumToString(testcase.sizedformat));
+
+        gl.texStorage2D(target, levels, testcase.sizedformat,
+                        0, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texStorage2D should fail for zero width");
+        gl.texStorage2D(target, levels, testcase.sizedformat,
+                        texsize, 0);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texStorage2D should fail for zero height");
+        gl.texStorage2D(target, levels, testcase.sizedformat,
+                        texsize, -texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texStorage2D should fail for negative height");
+        gl.texStorage2D(target, 0, testcase.sizedformat,
+                        texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texStorage2D should fail for zero levels");
+        gl.texStorage2D(target,
+                        Math.ceil(Math.log(texsize) / Math.log(2)) + 2,
+                        testcase.sizedformat,
+                        texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texStorage2D should fail for too many levels");
+        gl.texStorage2D(gl.TEXTURE_CUBE_MAP_NEGATIVE_X, levels, testcase.sizedformat,
+                    texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "texStorage2D should fail for bad target TEXTURE_CUBE_MAP_NEGATIVE_X");
+
+        gl.bindTexture(target, null);
+        gl.texStorage2D(target, levels, testcase.sizedformat,
+                        texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texStorage2D should fail when no texture is bound");
+        gl.bindTexture(target, tex);
+
+        // texStorage2D should only accept sized internalformats
+        gl.texStorage2D(target, levels, testcase.unsizedformat,
+                        texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "texStorage2D should fail for bad internalformat " + enumToString(testcase.unsizedformat));
+
+        // OK, now let's finally do the successfull texStorage2D call
+        gl.texStorage2D(target, levels, testcase.sizedformat,
+                        texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texStorage2D should succeed with a good sized internalformat");
+
+        // check TEXTURE_IMMUTABLE_FORMAT
+        var immutable = gl.getTexParameter(target, gl.TEXTURE_IMMUTABLE_FORMAT);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "getTexParameter should succeed with TEXTURE_IMMUTABLE_FORMAT");
+        assertMsg(immutable != 0, "getTexParameter with TEXTURE_IMMUTABLE_FORMAT should not return 0");
+
+        // check operations disallowed on immutable texture
+        gl.texImage2D(imageTargets[0], 0, gl.RGBA, texsize, texsize, 0,
+                      gl.RGBA, gl.UNSIGNED_BYTE, null);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage2D should fail on immutable texture");
+        var s3tc = gl.getExtension("WEBGL_compressed_texture_s3tc");
+        // FIXME - should eventually use a compressed format that's core in WebGL2, but
+        // I wanted something that I can run in Firefox today, which doesn't support the new formats yet.
+        if (s3tc) {
+            gl.compressedTexImage2D(imageTargets[0], 0, s3tc.COMPRESSED_RGBA_S3TC_DXT3_EXT,
+                                    texsize, texsize, 0,
+                                    new Uint8Array(texsize * texsize));
+            wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "compressedTexImage2D should fail on immutable texture");
+        }
+        gl.copyTexImage2D(imageTargets[0], 0, gl.RGBA, 0, 0, texsize, texsize, 0);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "copyTexImage2D should fail on immutable texture");
+
+        if ('redpixel' in testcase) {
+            // At this point, the texture images have only been defined by
+            // texStorage2D, which per spec should be equivalent to having
+            // defined texture images with null data, which should sample as RGBA 0,0,0,0.
+            gl.texParameteri(target, gl.TEXTURE_MIN_FILTER,
+                             testcase.mipmap ? gl.NEAREST_MIPMAP_NEAREST : gl.NEAREST);
+            if (testcase.type == gl.FLOAT) {
+                gl.texParameteri(target, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+            }
+
+            // Now upload some red texture data
+            var s = texsize;
+            var pixels;
+            if (testcase.redpixel instanceof Uint8Array) {
+                pixels = new Uint8Array(texsize * texsize * testcase.redpixel.length);
+            } else if (testcase.redpixel instanceof Uint16Array) {
+                pixels = new Uint16Array(texsize * texsize * testcase.redpixel.length);
+            } else if (testcase.redpixel instanceof Uint32Array) {
+                pixels = new Uint32Array(texsize * texsize * testcase.redpixel.length);
+            } else if (testcase.redpixel instanceof Float32Array) {
+                pixels = new Float32Array(texsize * texsize * testcase.redpixel.length);
+            }
+            for (var i = 0; i < texsize * texsize; i++) {
+                for (var j = 0; j < testcase.redpixel.length; j++) {
+                    pixels[i * testcase.redpixel.length + j] = testcase.redpixel[j];
+                }
+            }
+
+            if (target == gl.TEXTURE_2D) {
+                wtu.setupTexturedQuad(gl);
+            } else if (target == gl.TEXTURE_CUBE_MAP) {
+                wtu.setupTexturedQuadWithCubeMap(gl);
+            }
+
+            wtu.clearAndDrawUnitQuad(gl);
+            var alpha = testcase.alpha ? 0 : 255;
+            wtu.checkCanvas(gl, [0, 0, 0, alpha], "texture should sample as uninitialized texture after texStorage2D");
+
+            if (target == gl.TEXTURE_2D) {
+                for (var l = 0; l < levels; l++) {
+                    gl.texSubImage2D(gl.TEXTURE_2D,
+                                     l, 0, 0,
+                                     s, s,
+                                     testcase.unsizedformat, testcase.type,
+                                     pixels);
+                    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D should succeed on immutable texture as long as the format is compatible");
+                    s /= 2;
+                }
+            } else if (target == gl.TEXTURE_CUBE_MAP) {
+                for (var l = 0; l < levels; l++) {
+                    for (var f = 0; f < 6; f++) {
+                        gl.texSubImage2D(gl.TEXTURE_CUBE_MAP_POSITIVE_X + f,
+                                         l, 0, 0,
+                                         s, s,
+                                         testcase.unsizedformat, testcase.type,
+                                         pixels);
+                        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D should succeed on immutable texture as long as the format is compatible");
+                    }
+                    s /= 2;
+                }
+            }
+
+            wtu.clearAndDrawUnitQuad(gl);
+            wtu.checkCanvas(gl, [255, 0, 0, alpha], "texture should sample as red after uploading red pixels with texSubImage2D");
+        }
+    });
+
+    debug("");
+    debug("Test non-square images:");
+    const levels = 4;
+    const maxSize = 1 << (levels-1);
+
+    function expectOk(x,y) {
+        const tex = gl.createTexture();
+        gl.bindTexture(gl.TEXTURE_2D, tex);
+        gl.texStorage2D(gl.TEXTURE_2D, levels, gl.RGBA8, x, y);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+                            "texStorage2D should succeed with size [" + ([x,y].join(', ')) + "].");
+        gl.deleteTexture(tex);
+    }
+    expectOk(maxSize, maxSize);
+    expectOk(maxSize,       1);
+    expectOk(      1, maxSize);
+}
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-and-subimage-3d.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-and-subimage-3d.html
new file mode 100644
index 0000000000..c81fcffb4e
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-and-subimage-3d.html
@@ -0,0 +1,242 @@
+<!--
+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>texStorage3D and texSubImage3D conformance test</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>
+<canvas id="canvas" width="64" height="64"> </canvas>
+<div id="console"></div>
+
+
+<script>
+"use strict";
+description("This test verifies the functionality of texStorage3D and texSubImage3D.");
+
+debug("");
+
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("canvas");
+var gl = wtu.create3DContext(canvas, null, 2);
+var vao = null;
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+
+    runTexStorageAndSubImage3DTest();
+
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+}
+
+function enumToString(value) {
+  return wtu.glEnumToString(gl, value);
+}
+
+function runTexStorageAndSubImage3DTest()
+{
+    var texStorage3DTestCases = [
+        {
+            target: gl.TEXTURE_3D,
+            mipmap: false,
+            sizedformat: gl.RGBA8,
+            unsizedformat: gl.RGBA,
+            type: gl.UNSIGNED_BYTE,
+            alpha: true,
+            redpixel: new Uint8Array([0xff, 0x00, 0x00, 0x00]),
+        },
+        {
+            target: gl.TEXTURE_3D,
+            mipmap: true,
+            sizedformat: gl.R11F_G11F_B10F,
+            unsizedformat: gl.RGB,
+            type: gl.UNSIGNED_INT_10F_11F_11F_REV,
+            alpha: false,
+            // Red is unsigned floating point with 5 exponent bits followed by 6 mantissa bits.
+            // The effective value is 2^(exponent - 15) * (1 + mantissa / 64)
+            // See OpenGL ES 3.0.3 spec, section 2.1.3
+            // Here we want to encode the value 1.0, which we achieve with a zero mantissa
+            // and an exponent of 15.
+            redpixel: new Uint32Array([15<<6]),
+        },
+        {
+            target: gl.TEXTURE_3D,
+            mipmap: true,
+            sizedformat: gl.RGBA32F,
+            unsizedformat: gl.RGBA,
+            type: gl.FLOAT,
+            alpha: true,
+            redpixel: new Float32Array([1, 0, 0, 0]),
+        },
+    ];
+
+    texStorage3DTestCases.forEach(function(testcase){
+        var tex = gl.createTexture();
+        gl.bindTexture(gl.TEXTURE_3D, tex);
+        var texsize = 4;
+        var levels = testcase.mipmap
+                     ? Math.floor(Math.log(texsize) / Math.log(2)) + 1
+                     : 1;
+
+        debug("");
+        debug("Testing texStorage3D with " +
+              (testcase.mipmap ? "mipmap" : "no mipmap") + ", " +
+              "internalformat: " + enumToString(testcase.sizedformat));
+
+        gl.texStorage3D(gl.TEXTURE_3D, levels, testcase.sizedformat,
+                        0, texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texStorage3D should fail for zero width");
+        gl.texStorage3D(gl.TEXTURE_3D, levels, testcase.sizedformat,
+                        texsize, 0, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texStorage3D should fail for zero height");
+        gl.texStorage3D(gl.TEXTURE_3D, levels, testcase.sizedformat,
+                        texsize, texsize, 0);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texStorage3D should fail for zero depth");
+        gl.texStorage3D(gl.TEXTURE_3D, levels, testcase.sizedformat,
+                        texsize, -texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texStorage3D should fail for negative height");
+        gl.texStorage3D(gl.TEXTURE_3D, 0, testcase.sizedformat,
+                        texsize, texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texStorage3D should fail for zero levels");
+        if (testcase.mipmap) {
+            gl.texStorage3D(gl.TEXTURE_3D,
+                            levels + 1,
+                            testcase.sizedformat,
+                            texsize, texsize, texsize);
+            wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texStorage3D should fail for too many levels");
+        }
+        gl.texStorage3D(gl.TEXTURE_2D,
+                        levels,
+                        testcase.sizedformat,
+                        texsize, texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "texStorage3D should fail for target TEXTURE_2D");
+        gl.texStorage3D(gl.TEXTURE_CUBE_MAP,
+                        levels,
+                        testcase.sizedformat,
+                        texsize, texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "texStorage3D should fail for target TEXTURE_CUBE_MAP");
+        gl.bindTexture(gl.TEXTURE_3D, null);
+        gl.texStorage3D(gl.TEXTURE_3D, levels, testcase.sizedformat,
+                        texsize, texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texStorage3D should fail when no texture is bound");
+        gl.bindTexture(gl.TEXTURE_3D, tex);
+
+        // texStorage3D should only accept sized internalformats
+        gl.texStorage3D(gl.TEXTURE_3D, levels, testcase.unsizedformat,
+                        texsize, texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "texStorage3D should fail for bad internalformat " + enumToString(testcase.unsizedformat));
+
+        var pixels;
+        var number_of_pixels = texsize * texsize * texsize;
+        if (testcase.redpixel instanceof Uint8Array) {
+            pixels = new Uint8Array(number_of_pixels * testcase.redpixel.length);
+        } else if (testcase.redpixel instanceof Uint16Array) {
+            pixels = new Uint16Array(number_of_pixels * testcase.redpixel.length);
+        } else if (testcase.redpixel instanceof Uint32Array) {
+            pixels = new Uint32Array(number_of_pixels * testcase.redpixel.length);
+        } else if (testcase.redpixel instanceof Float32Array) {
+            pixels = new Float32Array(number_of_pixels * testcase.redpixel.length);
+        }
+        for (var i = 0; i < number_of_pixels; i++) {
+            for (var j = 0; j < testcase.redpixel.length; j++) {
+                pixels[i * testcase.redpixel.length + j] = testcase.redpixel[j];
+            }
+        }
+
+        gl.texSubImage3D(gl.TEXTURE_2D,
+                         0, 0, 0, 0,
+                         texsize, texsize, texsize,
+                         testcase.unsizedformat, testcase.type,
+                         pixels);
+        wtu.glErrorShouldBe(gl, gl.INVALID_ENUM,
+            "texSubImage3D should generate INVALID_ENUM if passed TEXTURE_2D target");
+        gl.texSubImage3D(gl.TEXTURE_3D,
+                         0, 0, 0, 0,
+                         texsize, texsize, texsize,
+                         testcase.unsizedformat, testcase.type,
+                         pixels);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
+            "texSubImage3D should fail if texStorage3D has not succeeded");
+
+        // OK, now let's finally do the successfull texStorage3D call
+        gl.texStorage3D(gl.TEXTURE_3D, levels, testcase.sizedformat,
+                        texsize, texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texStorage3D should succeed with a good sized internalformat");
+
+        // Subsequent texStorage3D calls should fail, even identical ones.
+        gl.texStorage3D(gl.TEXTURE_3D, levels, testcase.sizedformat,
+                        texsize, texsize, texsize);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texStorage3D should fail on immutable-format texture");
+
+        var s = texsize;
+        for (var l = 0; l < levels; l++) {
+            gl.texSubImage3D(gl.TEXTURE_3D,
+                             l, 0, 0, 0,
+                             s, s, s,
+                             testcase.unsizedformat, testcase.type,
+                             pixels);
+            s /= 2;
+            wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D should succeed on immutable texture as long as the format is compatible");
+        }
+        gl.texSubImage3D(gl.TEXTURE_3D,
+                         levels, 0, 0, 0,
+                         texsize, texsize, texsize,
+                         testcase.unsizedformat, testcase.type,
+                         pixels);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D should fail for too-high level");
+        gl.texSubImage3D(gl.TEXTURE_3D,
+                         0, 1, 0, 0,
+                         texsize, texsize, texsize,
+                         testcase.unsizedformat, testcase.type,
+                         pixels);
+        wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "texSubImage3D should fail for dimension out of range");
+    });
+
+    debug("");
+    debug("Test non-square images:");
+    const levels = 4;
+    const maxSize = 1 << (levels-1);
+
+    function expectOk(target, x,y,z, err) {
+        debug("(target=" + target + ", size=[" + ([x,y,z].join(', ')) + "])");
+        const tex = gl.createTexture();
+        gl.bindTexture(gl[target], tex);
+        gl.texStorage3D(gl[target], levels+1, gl.RGBA8, x, y, z);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "levels=levels+1");
+
+        gl.texStorage3D(gl[target], levels, gl.RGBA8, x, y, z);
+        wtu.glErrorShouldBe(gl, gl[err], "levels=levels");
+        gl.deleteTexture(tex);
+    }
+    expectOk("TEXTURE_3D", maxSize, maxSize, maxSize, "NO_ERROR");
+    expectOk("TEXTURE_3D", maxSize, maxSize,       1, "NO_ERROR");
+    expectOk("TEXTURE_3D", maxSize,       1, maxSize, "NO_ERROR");
+    expectOk("TEXTURE_3D", maxSize,       1,       1, "NO_ERROR");
+    expectOk("TEXTURE_3D",       1, maxSize, maxSize, "NO_ERROR");
+    expectOk("TEXTURE_3D",       1, maxSize,       1, "NO_ERROR");
+    expectOk("TEXTURE_3D",       1,       1, maxSize, "NO_ERROR");
+
+    expectOk("TEXTURE_2D_ARRAY", maxSize, maxSize, 10, "NO_ERROR");
+    expectOk("TEXTURE_2D_ARRAY", maxSize,       1, 10, "NO_ERROR");
+    expectOk("TEXTURE_2D_ARRAY",       1, maxSize, 10, "NO_ERROR");
+    expectOk("TEXTURE_2D_ARRAY",       1,       1, 10, "INVALID_OPERATION");
+}
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-compressed-formats.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-compressed-formats.html
new file mode 100644
index 0000000000..e154631ead
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-storage-compressed-formats.html
@@ -0,0 +1,136 @@
+<!--
+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>Conformance test for WebGL2 texStorage2D and texStorage3D with compressed format</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>
+<canvas id="canvas" width="64" height="64"> </canvas>
+<div id="console"></div>
+
+
+<script>
+"use strict";
+description("This test verifies that texStorage2D and texStorage3D " +
+            "accept compressed internalformats.");
+
+debug("");
+
+var wtu = WebGLTestUtils;
+var canvas = document.getElementById("canvas");
+var gl = wtu.create3DContext(canvas, null, 2);
+
+// Either of these extensions should be available on all WebGL 2.0 contexts
+const WEBGL_compressed_texture_etc = gl.getExtension("WEBGL_compressed_texture_etc");
+const WEBGL_compressed_texture_s3tc = gl.getExtension("WEBGL_compressed_texture_s3tc");
+
+if (!gl) {
+    testFailed("WebGL context does not exist");
+} else {
+    testPassed("WebGL context exists");
+
+    if (WEBGL_compressed_texture_etc) {
+        debug("Testing WEBGL_compressed_texture_etc formats");
+
+        // These compressed formats are in Table 3.19 from the OpenGL ES 3.0.4 spec.
+        runTexCompressedFormatsTest([
+            WEBGL_compressed_texture_etc.COMPRESSED_R11_EAC,
+            WEBGL_compressed_texture_etc.COMPRESSED_SIGNED_R11_EAC,
+            WEBGL_compressed_texture_etc.COMPRESSED_RG11_EAC,
+            WEBGL_compressed_texture_etc.COMPRESSED_SIGNED_RG11_EAC,
+            WEBGL_compressed_texture_etc.COMPRESSED_RGB8_ETC2,
+            WEBGL_compressed_texture_etc.COMPRESSED_SRGB8_ETC2,
+            WEBGL_compressed_texture_etc.COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,
+            WEBGL_compressed_texture_etc.COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
+            WEBGL_compressed_texture_etc.COMPRESSED_RGBA8_ETC2_EAC,
+            WEBGL_compressed_texture_etc.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC,
+        ]);
+    } else {
+        testPassed("No WEBGL_compressed_texture_etc support -- this is legal");
+    }
+
+    if (WEBGL_compressed_texture_s3tc) {
+        debug("Testing WEBGL_compressed_texture_s3tc formats");
+
+        runTexCompressedFormatsTest([
+            WEBGL_compressed_texture_s3tc.COMPRESSED_RGB_S3TC_DXT1_EXT,
+            WEBGL_compressed_texture_s3tc.COMPRESSED_RGBA_S3TC_DXT1_EXT,
+            WEBGL_compressed_texture_s3tc.COMPRESSED_RGBA_S3TC_DXT3_EXT,
+            WEBGL_compressed_texture_s3tc.COMPRESSED_RGBA_S3TC_DXT5_EXT,
+        ]);
+    } else {
+        testPassed("No WEBGL_compressed_texture_s3tc support -- this is legal");
+    }
+
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
+}
+
+function enumToString(value) {
+  return wtu.glEnumToString(gl, value);
+}
+
+function runTexCompressedFormatsTest(texCompressedFormats)
+{
+    wtu.setupUnitQuad(gl);
+
+    gl.useProgram(wtu.setupSimpleTextureProgramESSL300(gl, undefined, undefined,
+           `#version 300 es
+            precision mediump float;
+            uniform mediump sampler2DArray tex;
+            in vec2 texCoord;
+            out vec4 out_color;
+            void main() {
+              out_color = texture(tex, vec3(texCoord, 0));
+            }`
+        ));
+
+    texCompressedFormats.forEach(function(internalformat){
+        // Test a 2D texture.
+        var tex = gl.createTexture();
+        gl.bindTexture(gl.TEXTURE_2D, tex);
+        gl.texStorage2D(gl.TEXTURE_2D, 1, internalformat, 4, 4);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+                            "texStorage2D should succeed for " + enumToString(internalformat));
+        gl.deleteTexture(tex);
+
+        // GLES 3.0.4 p147: + EXT_texture_compression_s3tc:
+        // If internalformat is an ETC2/EAC/DXT1/DXT3/DXT5
+        // format, CompressedTexImage3D will generate an INVALID_OPERATION error if
+        // target is not TEXTURE_2D_ARRAY.
+
+        // Test the 3D texture targets.
+        var tex3d = gl.createTexture();
+        gl.bindTexture(gl.TEXTURE_3D, tex3d);
+        gl.texStorage3D(gl.TEXTURE_3D, 1, internalformat, 4, 4, 1);
+        wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
+                            "texStorage3D(TEXTURE_3D) should fail for " + enumToString(internalformat));
+        gl.deleteTexture(tex3d);
+
+        var tex2dArr = gl.createTexture();
+        gl.bindTexture(gl.TEXTURE_2D_ARRAY, tex2dArr);
+        gl.texStorage3D(gl.TEXTURE_2D_ARRAY, 1, internalformat, 4, 4, 1);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+                            "texStorage3D(TEXTURE_2D_ARRAY) should succeed for " + enumToString(internalformat));
+        wtu.clearAndDrawUnitQuad(gl);
+        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "drawing unit quad from empty texture");
+        gl.deleteTexture(tex2dArr);
+    });
+}
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-subimage3d-canvas-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-subimage3d-canvas-bug.html
new file mode 100644
index 0000000000..2c2d021d5a
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-subimage3d-canvas-bug.html
@@ -0,0 +1,56 @@
+<!--
+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>Test bug of TexSubImage3D with canvas</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="example" width="2" height="2" style="width: 2px; height: 2px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+description(document.title);
+debug("This is a regression test for <a href='https://bugs.chromium.org/p/chromium/issues/detail?id=859400'>Chromium Issue 859400</a>");
+debug("");
+
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("example", undefined, 2);
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+
+function runTest() {
+  var ctx = document.createElement('canvas').getContext("2d");
+  var maxTexSize = gl.getParameter(gl.MAX_TEXTURE_SIZE);
+  var width = Math.ceil(Math.sqrt(maxTexSize));
+  var height = width;
+  var depth = width + 1;
+  ctx.canvas.width = width;
+  // Set canvas height to a value larger than MAX_TEXTURE_SIZE.
+  // This triggers a validation bug in Chrome.
+  ctx.canvas.height = height * depth;
+
+  var tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D_ARRAY, tex);
+  gl.texStorage3D(gl.TEXTURE_2D_ARRAY, 1, gl.RGBA8, width, height, depth);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from TexStorage3D.");
+  gl.texSubImage3D(gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, width, height, depth,
+                   gl.RGBA, gl.UNSIGNED_BYTE, ctx.canvas);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from TexSubImage3D.");
+}
+
+runTest();
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-subimage3d-pixel-buffer-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-subimage3d-pixel-buffer-bug.html
new file mode 100644
index 0000000000..181a4819fe
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-subimage3d-pixel-buffer-bug.html
@@ -0,0 +1,90 @@
+<!--
+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>Test bug of TexSubImage3D with pixel buffer</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="example" width="2" height="2" style="width: 2px; height: 2px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader_texsize" type="x-shader/x-vertex">#version 300 es
+in vec4 vPosition;
+void main()
+{
+    gl_Position = vPosition;
+}
+</script>
+
+<script id="fshader_texsize_3d" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+uniform highp sampler3D tex;
+uniform int lod;
+uniform ivec3 texSize;
+out vec4 fragColor;
+void main()
+{
+    fragColor = (textureSize(tex, lod) == texSize ? vec4(1.0, 0.0, 0.0, 1.0) : vec4(0.0, 0.0, 0.0, 1.0));
+}
+</script>
+
+
+<script>
+"use strict";
+description(document.title);
+debug("This is a regression test for <a href='https://bugs.chromium.org/p/chromium/issues/detail?id=666384'>Chromium Issue 666384</a>");
+debug("");
+
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("example", undefined, 2);
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+
+function runTest() {
+  wtu.setupUnitQuad(gl, 0, 1);
+
+  var program = wtu.setupProgram(
+      gl, ['vshader_texsize', 'fshader_texsize_3d'], ['vPosition'], [0]);
+
+  var width = 32;
+  var height = 16;
+  var depth = 8;
+  gl.uniform1i(gl.getUniformLocation(program, "tex"), 0);
+  gl.uniform1i(gl.getUniformLocation(program, "lod"), 2);
+  gl.uniform3i(gl.getUniformLocation(program, "texSize"), 8, 4, 2);
+  var tex3d = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_3D, tex3d);
+  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MIN_FILTER) should succeed");
+  gl.texStorage3D(gl.TEXTURE_3D, 4, gl.RGBA8, width, height, depth);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texStorage3D should succeed");
+  var buffer = gl.createBuffer();
+  gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer);
+  gl.bufferData(gl.PIXEL_UNPACK_BUFFER, new Uint8Array(width * height * depth * 4), gl.DYNAMIC_DRAW);
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Update texture data with texSubImage3D from pixel buffer should succeed");
+  gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, null);
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearAndDrawQuad should succeed");
+  wtu.checkCanvas(gl, [255, 0, 0, 255], "should draw with [255, 0, 0, 255]");
+  gl.deleteTexture(tex3d);
+  gl.deleteBuffer(buffer);
+}
+
+runTest();
+var successfullyParsed = true;
+
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params-imagedata.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params-imagedata.html
new file mode 100644
index 0000000000..d6c0765bbe
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params-imagedata.html
@@ -0,0 +1,126 @@
+<!--
+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 TexImage3D from ImageData with unpack params tests.</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>
+<script>
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext(undefined, undefined, 2);
+let actual;
+
+description("TexImage3D from ImageData with unpack params");
+
+debug("TexImage3D from ImageData with UNPACK_IMAGE_HEIGHT set (crbug.com/804123)");
+
+// framebuffer for readback
+const fbo = gl.createFramebuffer();
+gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+
+function makeTestData(size, start) {
+  const data = new Uint8ClampedArray(size);
+  for (let i = 0; i < size; ++i) {
+    data[i] = (start + i) % 256;
+  }
+  return data;
+}
+
+// source data
+//
+//   dstWidth = 4
+// <-->
+// xxxx ^ ^ ^ ^
+// xxxx |   | |
+// xxxx |   | |
+// xxxx |   | v dstHeight = 4
+// ---- |   |
+// ---- |   |
+// ---- |   v unpackImageHeight = 7
+// xxxx | |
+// xxxx |
+// xxxx |
+// xxxx |
+// ---- |
+// ---- |
+// ---- |
+// xxxx | |
+// xxxx |
+// xxxx |
+// xxxx |
+// ---- |
+// ---- |
+// ---- |
+// xxxx | v dstDepth = 4
+// xxxx |
+// xxxx |
+// xxxx v srcHeight = 25
+// <-->
+//   srcWidth = 4
+const unpackImageHeight = 7;
+const dstWidth = 4;
+const dstHeight = 4;
+const dstDepth = 4;
+const srcWidth = dstWidth;
+const srcHeight = (dstDepth - 1) * unpackImageHeight + dstHeight;
+const srcSize = srcWidth * srcHeight;
+const sizeofR8 = 1;
+const sizeofRGBA8 = 4;
+const imageData = new ImageData(makeTestData(srcSize * sizeofRGBA8, 1), srcWidth, srcHeight);
+const texture = gl.createTexture();
+gl.bindTexture(gl.TEXTURE_3D, texture);
+
+debug("");
+// upload
+gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, 2);
+gl.texImage3D(gl.TEXTURE_3D, 0, gl.R8, 1, 1, 1, 0, gl.RED, gl.UNSIGNED_BYTE, imageData);
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "small upload");
+// check
+actual = new Uint8Array(sizeofRGBA8);
+gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture, 0, 0);
+if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
+  gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, actual);
+  shouldBeTrue(`areArraysEqual(actual, [1, 0, 0, 255])`);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR);
+} else {
+  debug("framebuffer incomplete: skipped");
+}
+
+debug("");
+// upload
+gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, unpackImageHeight);
+gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, dstWidth, dstHeight, dstDepth, 0,
+              gl.RGBA, gl.UNSIGNED_BYTE, imageData);
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "larger upload");
+// check
+actual = new Uint8Array(dstWidth * dstHeight * sizeofRGBA8);
+let expected;
+for (let z = 0; z < dstDepth; ++z) {
+  gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture, 0, z);
+  shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
+  gl.readPixels(0, 0, dstWidth, dstHeight, gl.RGBA, gl.UNSIGNED_BYTE, actual);
+  debug(`for z = ${z}:`);
+  expected = makeTestData(dstWidth * dstHeight * sizeofRGBA8,
+                          1 + z * dstWidth * unpackImageHeight * sizeofRGBA8);
+  shouldBeTrue('areArraysEqual(actual, expected)');
+}
+wtu.glErrorShouldBe(gl, gl.NO_ERROR);
+
+gl.deleteTexture(texture);
+
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params-with-flip-y-and-premultiply-alpha.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params-with-flip-y-and-premultiply-alpha.html
new file mode 100644
index 0000000000..b80b01c69a
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params-with-flip-y-and-premultiply-alpha.html
@@ -0,0 +1,499 @@
+<!--
+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 texture unpack parameters with FLIP_Y / PREMULTIPLY_ALPHA conformance test.</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="example" width="4" height="4"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+
+var wtu = WebGLTestUtils;
+var __verbose__ = false;
+
+// Some drivers (for example, NVIDIA Linux) incorrectly require padding for
+// the last row. The below flag is only for testing convenience. Browsers should
+// work around the bug.
+var __apply_alignment_workaround__ = false;
+
+function setupArrayBuffer(size, initData) {
+  var array = new Uint8Array(size);
+  if (initData) {
+    for (var ii = 0; ii < size; ++ii) {
+      array[ii] = ii % 255;
+    }
+  }
+  return array;
+}
+
+function calculatePaddingBytes(bytesPerPixel, alignment, width) {
+  var padding = 0;
+  switch (alignment) {
+    case 1:
+    case 2:
+    case 4:
+    case 8:
+      padding = (bytesPerPixel * width) % alignment;
+      if (padding > 0)
+        padding = alignment - padding;
+      return padding;
+    default:
+      testFailed("should not reach here");
+      return;
+  }
+}
+
+function computeImageSizes2D(width, height, testCase) {
+  // Assume RGBA8/UNSIGNED_BYTE
+  var bytesPerPixel = 4;
+  var actualWidth = testCase.rowLength == 0 ? width : testCase.rowLength;
+  var padding = calculatePaddingBytes(bytesPerPixel, testCase.alignment, actualWidth);
+  var bytesPerRow = actualWidth * bytesPerPixel + padding;
+  var bytesLastRow = bytesPerPixel * width;
+  var size = bytesPerRow * (height - 1) + bytesLastRow;
+  var skipSize = 0;
+  if (testCase.skipPixels > 0)
+    skipSize += bytesPerPixel * testCase.skipPixels;
+  if (testCase.skipRows > 0)
+    skipSize += bytesPerRow * testCase.skipRows;
+  return {size: size,
+          bytesPerRow: bytesPerRow,
+          bytesLastRow: bytesLastRow,
+          padding: padding,
+          skipSize: skipSize,
+          totalSize: size + skipSize};
+}
+
+function copyData(srcData, srcIndex, dstData, dstIndex, size, premultiply_alpha) {
+  for (var ii = 0; ii < size / 4; ++ii) {
+    var factor = 1.0;
+    if (premultiply_alpha)
+      factor = srcData[srcIndex + ii * 4 + 3] / 255.0;
+    dstData[dstIndex + ii * 4] = srcData[srcIndex + ii * 4] * factor;
+    dstData[dstIndex + ii * 4 + 1] = srcData[srcIndex + ii * 4 + 1] * factor;
+    dstData[dstIndex + ii * 4 + 2] = srcData[srcIndex + ii * 4 + 2] * factor;
+    dstData[dstIndex + ii * 4 + 3] = srcData[srcIndex + ii * 4 + 3];
+  }
+}
+
+function unpackPixels(srcData, width, height, imageSizes, flip_y, premultiply_alpha) {
+  var bytesPerPixel = 4;
+  var unpackedSize = width * height * bytesPerPixel;
+  var dstData = setupArrayBuffer(unpackedSize, false);
+  var srcIndex = imageSizes.skipSize;
+  var dstIndex = 0;
+  var inc = width * bytesPerPixel;
+  if (flip_y)
+    dstIndex += (height - 1) * inc;
+  for (var y = 0; y < height; ++y) {
+    copyData(srcData, srcIndex, dstData, dstIndex, width * bytesPerPixel, premultiply_alpha);
+    srcIndex += imageSizes.bytesPerRow;
+    if (flip_y)
+      dstIndex -= inc;
+    else
+      dstIndex += inc;
+  }
+  if (flip_y)
+    dstIndex += height * inc;
+  return dstData;
+}
+
+function getPixelsFromTexture2D(gl, tex, xoffset, yoffset, width, height) {
+  var fbo = gl.createFramebuffer();
+  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+  gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
+  var bytesPerReadbackPixel = 4;
+  var readbackBuffer = setupArrayBuffer(width * height * bytesPerReadbackPixel, false);
+  gl.readPixels(xoffset, yoffset, width, height, gl.RGBA, gl.UNSIGNED_BYTE, readbackBuffer);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "read back texture pixels should succeed");
+  gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+  gl.deleteFramebuffer(fbo);
+  return readbackBuffer;
+}
+
+function comparePixels(buffer1, buffer2, tolerance) {
+  if (buffer1.length != buffer2.length || buffer1.length % 4 != 0) {
+    testFailed("compare pixels: invalid buffer size");
+    return;
+  }
+  var count = 0;
+  for (var ii = 0; ii < buffer1.length / 4; ++ii) {
+    var distance = 0;
+    for (var jj = 0; jj < 4; ++jj) {
+      var diff = buffer1[ii * 4 + jj] - buffer2[ii * 4 + jj];
+      distance += diff * diff;
+    }
+    if (Math.sqrt(diff) > tolerance) {
+      if (__verbose__) {
+        debug("Pixel " + ii + ": expected (" +
+              [buffer1[ii * 4], buffer1[ii * 4 + 1], buffer1[ii * 4 + 2], buffer1[ii * 4 + 3]] + "), got (" +
+              [buffer2[ii * 4], buffer2[ii * 4 + 1], buffer2[ii * 4 + 2], buffer2[ii * 4 + 3]] + ")");
+      }
+      count++;
+    }
+  }
+  if (count > 0) {
+    testFailed("compare pixels: " + count + " pixels differ");
+  } else {
+    testPassed("compare pixels: as expected");
+  }
+}
+
+function runTestIteration2D(gl, testCase, flip_y, premultiply_alpha) {
+  debug("");
+  debug("Texture upload with : flip_y = " + flip_y + ", premultiply_alpha = " + premultiply_alpha +
+        ", alignment = " + testCase.alignment + ", rowLength = " + testCase.rowLength +
+        ", skipPixels = " + testCase.skipPixels + ", skipRows = " + testCase.skipRows);
+  debug("TexImage2D : size = (" + testCase.width + ", " + testCase.height + ")");
+  gl.pixelStorei(gl.UNPACK_ALIGNMENT, testCase.alignment);
+  gl.pixelStorei(gl.UNPACK_ROW_LENGTH, testCase.rowLength);
+  gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, testCase.skipPixels);
+  gl.pixelStorei(gl.UNPACK_SKIP_ROWS, testCase.skipRows);
+  gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flip_y);
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, premultiply_alpha);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Set up pixel store parameters should succeed");
+
+  var tol = 3;
+
+  var tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+
+  var imageSizes = computeImageSizes2D(testCase.width, testCase.height, testCase);
+  var bufferSize = imageSizes.totalSize;
+  var array;
+
+  // Verify buffer with less than enough size will fail.
+  array = setupArrayBuffer(bufferSize - 1, false);
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, testCase.width, testCase.height, 0,
+                gl.RGBA, gl.UNSIGNED_BYTE, array);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "buffer too small");
+
+  if (__apply_alignment_workaround__)
+    bufferSize += imageSizes.padding;
+  array = setupArrayBuffer(bufferSize, true);
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, testCase.width, testCase.height, 0,
+                gl.RGBA, gl.UNSIGNED_BYTE, array);
+  if (testCase.validUnpackParams2D) {
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D with correct buffer size should succeed");
+  } else {
+    wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid unpack params combination");
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, testCase.width, testCase.height, 0,
+                  gl.RGBA, gl.UNSIGNED_BYTE, null);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "unpack param constraints do not apply if no data are uploaded.");
+    return;
+  }
+
+  var buffer1 = unpackPixels(array, testCase.width, testCase.height, imageSizes, flip_y, premultiply_alpha);
+  var buffer2 = getPixelsFromTexture2D(gl, tex, 0, 0, testCase.width, testCase.height);
+  comparePixels(buffer1, buffer2, tol);
+
+  var subWidth = testCase.width - testCase.xoffset;
+  var subHeight = testCase.height - testCase.yoffset;
+  debug("TexSubImage2D : offset = (" + testCase.xoffset + ", " + testCase.yoffset +
+        "), size = (" + subWidth + ", " + subHeight + ")");
+  imageSizes = computeImageSizes2D(subWidth, subHeight, testCase);
+  bufferSize = imageSizes.totalSize;
+
+  array = setupArrayBuffer(bufferSize - 1, false);
+  gl.texSubImage2D(gl.TEXTURE_2D, 0, testCase.xoffset, testCase.yoffset,
+                   subWidth, subHeight, gl.RGBA, gl.UNSIGNED_BYTE, array);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "buffer too small");
+
+  if (__apply_alignment_workaround__)
+    bufferSize += imageSizes.padding;
+  array = setupArrayBuffer(bufferSize, true);
+  gl.texSubImage2D(gl.TEXTURE_2D, 0, testCase.xoffset, testCase.yoffset, subWidth, subHeight,
+                   gl.RGBA, gl.UNSIGNED_BYTE, array);
+  if (testCase.validUnpackParamsForSub2D) {
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D with correct buffer size should succeed");
+  } else {
+    wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid unpack params combination");
+    return;
+  }
+
+  var buffer1 = unpackPixels(array, subWidth, subHeight, imageSizes, flip_y, premultiply_alpha);
+  var buffer2 = getPixelsFromTexture2D(
+      gl, tex, testCase.xoffset, testCase.yoffset, subWidth, subHeight);
+  comparePixels(buffer1, buffer2, tol);
+
+  gl.bindTexture(gl.TEXTURE_2D, null);
+  gl.deleteTexture(tex);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
+}
+
+function runTests(gl) {
+  var testCases = [
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 1, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 2, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 6, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 4, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 5, height: 8, xoffset: 2, yoffset: 3,
+      alignment: 8, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+
+    // ROW_LENGTH == width
+    { width: 10, height: 9, xoffset: 2, yoffset: 3,
+      alignment: 4, rowLength: 10, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+
+    // ROW_LENGTH < width
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 1, rowLength: 4, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: false },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 2, rowLength: 4, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: false },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 4, rowLength: 4, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: false },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 8, rowLength: 4, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: false },
+
+    // ROW_LENGTH > width
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 1, rowLength: 6, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 2, rowLength: 7, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 4, rowLength: 8, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 8, rowLength: 9, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+
+    // IMAGE_HEIGHT == height
+    { width: 6, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 8, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+
+    // IMAGE_HEIGHT < height
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 1, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 2, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 4, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 8, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+
+    // IMAGE_HEIGHT > height
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 1, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 6, height: 7, xoffset: 2, yoffset: 2,
+      alignment: 2, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 7, height: 7, xoffset: 2, yoffset: 4,
+      alignment: 4, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 8, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 8, rowLength: 0, skipPixels: 0, skipRows: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+
+    // SKIP parameters
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 1, rowLength: 0, skipPixels: 10, skipRows: 0,
+      validUnpackParams2D: false },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 2, rowLength: 0, skipPixels: 2, skipRows: 8,
+      validUnpackParams2D: false },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 4, rowLength: 0, skipPixels: 3, skipRows: 5,
+      validUnpackParams2D: false },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 8, rowLength: 0, skipPixels: 7, skipRows: 0,
+      validUnpackParams2D: false },
+
+    // all mixed.
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 1, rowLength: 6, skipPixels: 3, skipRows: 5,
+      validUnpackParams2D: false },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 2, rowLength: 4, skipPixels: 7, skipRows: 2,
+      validUnpackParams2D: false },
+    { width: 5, height: 7, xoffset: 2, yoffset: 3,
+      alignment: 4, rowLength: 10, skipPixels: 0, skipRows: 3,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+    { width: 1, height: 1, xoffset: 0, yoffset: 0,
+      alignment: 2, rowLength: 3, skipPixels: 3, skipRows: 5,
+      validUnpackParams2D: false },
+    { width: 17, height: 6, xoffset: 12, yoffset: 3,
+      alignment: 2, rowLength: 4, skipPixels: 1, skipRows: 4,
+      validUnpackParams2D: false },
+    { width: 8, height: 17, xoffset: 2, yoffset: 13,
+      alignment: 4, rowLength: 9, skipPixels: 0, skipRows: 3,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true },
+  ];
+
+  var groups = [
+    // { flip_y: false,  premultiply_alpha: false },
+    { flip_y: true,  premultiply_alpha: false },
+    { flip_y: false, premultiply_alpha: true },
+    { flip_y: true,  premultiply_alpha: true },
+  ];
+
+  for (var jj = 0; jj < groups.length; ++jj) {
+    var group = groups[jj];
+    for (var ii = 0; ii < testCases.length; ++ii) {
+      var testCase = testCases[ii];
+      runTestIteration2D(gl, testCase, group.flip_y, group.premultiply_alpha);
+    }
+  }
+}
+
+function runNegativeTests(gl) {
+  debug("");
+  debug("Test tex{Sub}Image2D from pbo fails with FLIP_Y = true or PREMULTIPLY_ALPHA = true");
+
+  var width = 16, height = 16, depth = 2;
+
+  // Restore default values.
+  gl.pixelStorei(gl.UNPACK_ALIGNMENT, 4);
+  gl.pixelStorei(gl.UNPACK_ROW_LENGTH, 0);
+  gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, 0);
+  gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, 0);
+  gl.pixelStorei(gl.UNPACK_SKIP_ROWS, 0);
+  gl.pixelStorei(gl.UNPACK_SKIP_IMAGES, 0);
+  gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
+
+  var tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+
+  var bufferSize = width * height * 4; // RGBA8
+  var buffer = gl.createBuffer();
+  gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer);
+  gl.bufferData(gl.PIXEL_UNPACK_BUFFER, bufferSize, gl.DYNAMIC_DRAW);
+
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D from pbo works with default pixel store settings");
+  gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D from pbo works with default pixel store settings");
+
+  gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage2D from pbo with FLIP_Y=true should fail");
+  gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage2D from pbo with FLIP_Y=true should fail");
+  gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
+
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage2D from pbo with PREMULTIPLY_ALPHA=true should fail");
+  gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage2D from pbo with PREMULTIPLY_ALPHA=true should fail");
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
+
+  debug("");
+  debug("Test tex{Sub}Image3D from pbo fails with FLIP_Y = true or PREMULTIPLY_ALPHA = true");
+
+  gl.deleteTexture(tex);
+  tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_3D, tex);
+
+  bufferSize = width * height * depth * 4; // RGBA8
+  gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer);
+  gl.bufferData(gl.PIXEL_UNPACK_BUFFER, bufferSize, gl.DYNAMIC_DRAW);
+
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D from pbo works with default pixel store settings");
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D from pbo works with default pixel store settings");
+
+  gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D from pbo with FLIP_Y=true should fail");
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D from pbo with FLIP_Y=true should fail");
+  gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
+
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D from pbo with PREMULTIPLY_ALPHA=true should fail");
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, 0);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D from pbo with PREMULTIPLY_ALPHA=true should fail");
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
+
+  debug("");
+  debug("Test tex{Sub}Image3D from client array fails with FLIP_Y = true or PREMULTIPLY_ALPHA = true");
+
+  gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, null);
+  gl.deleteBuffer(buffer);
+  buffer = null;
+  var array = setupArrayBuffer(bufferSize, false);
+
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, array);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D from client array works with default pixel store settings");
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, array);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D from client array works with default pixel store settings");
+
+  gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, array);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D from client array with FLIP_Y=true should fail");
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, array);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D from client array with FLIP_Y=true should fail");
+  gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
+
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, width, height, depth, 0, gl.RGBA, gl.UNSIGNED_BYTE, array);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texImage3D from pbo with PREMULTIPLY_ALPHA=true should fail");
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, 0, 0, 0, width, height, depth, gl.RGBA, gl.UNSIGNED_BYTE, array);
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "texSubImage3D from pbo with PREMULTIPLY_ALPHA=true should fail");
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
+}
+
+function runRegressionTests(gl) {
+  debug("");
+  debug("The following test serves as a regression test for crbug.com/774174");
+  var array = new Uint16Array(32);
+  gl.pixelStorei(gl.UNPACK_ROW_LENGTH, 4);
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, 6);
+  var tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+  gl.texSubImage2D(gl.TEXTURE_2D, 4, 7, 5, 8, 5, gl.RGB, gl.UNSIGNED_SHORT_5_5_5_1, array);
+  // At this point, the Chrome ASAN build used to crash.
+  testPassed("The regression test for crbug.com/774174 doesn't crash");
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Calling texSubImage2D without initializing the texture is illegal");
+  gl.pixelStorei(gl.UNPACK_ROW_LENGTH, 0);
+  gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
+}
+
+var gl = wtu.create3DContext("example", undefined, 2);
+if (!gl) {
+  testFailed("Fail to get a WebGL context");
+} else {
+  runTests(gl);
+  runNegativeTests(gl);
+  runRegressionTests(gl);
+}
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params.html
new file mode 100644
index 0000000000..2cdfd4bd7d
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-unpack-params.html
@@ -0,0 +1,591 @@
+<!--
+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 texture unpack parameters conformance test.</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="example" width="4" height="4"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script>
+"use strict";
+
+var wtu = WebGLTestUtils;
+var __verbose__ = false;
+
+// Some drivers (for example, NVIDIA Linux) incorrectly require padding for
+// the last row. The below flag is only for testing convenience. Browsers should
+// work around the bug.
+var __apply_alignment_workaround__ = false;
+
+function setupArrayBuffer(size, initData) {
+  var array = new Uint8Array(size);
+  if (initData) {
+    for (var ii = 0; ii < size; ++ii) {
+      array[ii] = ii % 255;
+    }
+  }
+  return array;
+}
+
+function calculatePaddingBytes(bytesPerPixel, alignment, width) {
+  var padding = 0;
+  switch (alignment) {
+    case 1:
+    case 2:
+    case 4:
+    case 8:
+      padding = (bytesPerPixel * width) % alignment;
+      if (padding > 0)
+        padding = alignment - padding;
+      return padding;
+    default:
+      testFailed("should not reach here");
+      return;
+  }
+}
+
+function computeImageSizes2D(width, height, testCase) {
+  // Assume RGB8/UNSIGNED_BYTE
+  var bytesPerPixel = 3;
+  var actualWidth = testCase.rowLength == 0 ? width : testCase.rowLength;
+  var padding = calculatePaddingBytes(bytesPerPixel, testCase.alignment, actualWidth);
+  var bytesPerRow = actualWidth * bytesPerPixel + padding;
+  var bytesLastRow = bytesPerPixel * width;
+  var size = bytesPerRow * (height - 1) + bytesLastRow;
+  var skipSize = 0;
+  if (testCase.skipPixels > 0)
+    skipSize += bytesPerPixel * testCase.skipPixels;
+  if (testCase.skipRows > 0)
+    skipSize += bytesPerRow * testCase.skipRows;
+  return {size: size,
+          bytesPerRow: bytesPerRow,
+          bytesLastRow: bytesLastRow,
+          padding: padding,
+          skipSize: skipSize,
+          totalSize: size + skipSize};
+}
+
+function computeImageSizes3D(width, height, depth, testCase) {
+  // Assume RGB8/UNSIGNED_BYTE
+  var bytesPerPixel = 3;
+  var actualWidth = testCase.rowLength == 0 ? width : testCase.rowLength;
+  var actualHeight = testCase.imageHeight == 0 ? height : testCase.imageHeight;
+  var padding = calculatePaddingBytes(bytesPerPixel, testCase.alignment, actualWidth);
+  var bytesPerRow = actualWidth * bytesPerPixel + padding;
+  var bytesLastRow = bytesPerPixel * width;
+  var bytesPerImage = bytesPerRow * actualHeight;
+  var bytesLastImage = bytesPerRow * (height - 1) + bytesLastRow;
+  var size = bytesPerImage * (depth - 1) + bytesLastImage;
+  var skipSize = 0;
+  if (testCase.skipPixels > 0)
+    skipSize += bytesPerPixel * testCase.skipPixels;
+  if (testCase.skipRows > 0)
+    skipSize += bytesPerRow * testCase.skipRows;
+  if (testCase.skipImages > 0)
+    skipSize += bytesPerImage * testCase.skipImages;
+  return {size: size,
+          bytesPerRow: bytesPerRow,
+          bytesLastRow: bytesLastRow,
+          bytesPerImage: bytesPerImage,
+          bytesLastImage: bytesLastImage,
+          padding: padding,
+          skipSize: skipSize,
+          totalSize: size + skipSize};
+}
+
+function copyData(srcData, srcIndex, dstData, dstIndex, size) {
+  for (var ii = 0; ii < size; ++ii)
+    dstData[dstIndex + ii] = srcData[srcIndex + ii];
+}
+
+function unpackPixels(srcData, width, height, depth, imageSizes) {
+  var bytesPerPixel = 3;
+  var unpackedSize = width * height * depth * bytesPerPixel;
+  var dstData = setupArrayBuffer(unpackedSize, false);
+  var srcIndex = imageSizes.skipSize;
+  var dstIndex = 0;
+  for (var z = 0; z < depth; ++z) {
+    var srcIndexPerImage = srcIndex;
+    for (var y = 0; y < height; ++y) {
+      copyData(srcData, srcIndexPerImage, dstData, dstIndex, width * 3);
+      srcIndexPerImage += imageSizes.bytesPerRow;
+      dstIndex += width * 3;
+    }
+    if (depth > 1)
+      srcIndex += imageSizes.bytesPerImage;
+  }
+  return dstData;
+}
+
+function getPixelsFromTexture2D(gl, tex, xoffset, yoffset, width, height) {
+  var fbo = gl.createFramebuffer();
+  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+  gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
+  var bytesPerReadbackPixel = 4;
+  var readbackBuffer = setupArrayBuffer(width * height * bytesPerReadbackPixel, false);
+  gl.readPixels(xoffset, yoffset, width, height, gl.RGBA, gl.UNSIGNED_BYTE, readbackBuffer);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "read back texture pixels should succeed");
+  var bytesPerPixel = 3;
+  var buffer = setupArrayBuffer(width * height * bytesPerPixel, false);
+  var srcIndex = 0;
+  var dstIndex = 0;
+  for (var y = 0; y < height; ++y) {
+    for (var x = 0; x < width; ++x) {
+      buffer[dstIndex++] = readbackBuffer[srcIndex++]; // R
+      buffer[dstIndex++] = readbackBuffer[srcIndex++]; // G
+      buffer[dstIndex++] = readbackBuffer[srcIndex++]; // B
+      srcIndex++;                                      // A
+    }
+  }
+  gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+  gl.deleteFramebuffer(fbo);
+  return buffer;
+}
+
+function getPixelsFromTexture3D(gl, tex, xoffset, yoffset, zoffset, width, height, depth) {
+  var fbo = gl.createFramebuffer();
+  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
+  var bytesPerReadbackPixel = 4;
+  var readbackBuffer = setupArrayBuffer(width * height * bytesPerReadbackPixel, false);
+  var bytesPerPixel = 3;
+  var buffer = setupArrayBuffer(width * height * depth * bytesPerPixel, false);
+  var dstIndex = 0;
+  for (var zz = 0; zz < depth; ++zz) {
+    gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, tex, 0, zz + zoffset);
+    gl.readPixels(xoffset, yoffset, width, height, gl.RGBA, gl.UNSIGNED_BYTE, readbackBuffer);
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "read back texture pixels should succeed");
+    var srcIndex = 0;
+    for (var y = 0; y < height; ++y) {
+      for (var x = 0; x < width; ++x) {
+        buffer[dstIndex++] = readbackBuffer[srcIndex++]; // R
+        buffer[dstIndex++] = readbackBuffer[srcIndex++]; // G
+        buffer[dstIndex++] = readbackBuffer[srcIndex++]; // B
+        srcIndex++;                                      // A
+      }
+    }
+  }
+  gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+  gl.deleteFramebuffer(fbo);
+  return buffer;
+}
+
+function comparePixels(buffer1, buffer2) {
+  if (buffer1.length != buffer2.length || buffer1.length % 3 != 0) {
+    testFailed("compare pixels: invalid buffer size");
+    return;
+  }
+  var count = 0;
+  for (var ii = 0; ii < buffer1.length / 3; ++ii) {
+    if (buffer1[ii * 3] != buffer2[ii * 3] ||
+        buffer1[ii * 3 + 1] != buffer2[ii * 3 + 1] ||
+        buffer1[ii * 3 + 2] != buffer2[ii * 3 + 2]) {
+      if (__verbose__) {
+        debug("Pixel " + ii + ": expected (" +
+              [buffer1[ii * 3], buffer1[ii * 3 + 1], buffer1[ii * 3 + 2]] + "), got (" +
+              [buffer2[ii * 3], buffer2[ii * 3 + 1], buffer2[ii * 3 + 2]] + ")");
+      }
+      count++;
+    }
+  }
+  if (count > 0) {
+    testFailed("compare pixels: " + count + " pixels differ");
+  } else {
+    testPassed("compare pixels: as expected");
+  }
+}
+
+function runTestIteration2D(gl, testCase, useUnpackBuffer) {
+  debug("");
+  debug("Texture upload from " + (useUnpackBuffer ? "unpack buffer" : "client data") +
+        " : alignment = " + testCase.alignment + ", rowLength = " + testCase.rowLength +
+        ", skipPixels = " + testCase.skipPixels + ", skipRows = " + testCase.skipRows);
+  debug("TexImage2D : size = (" + testCase.width + ", " + testCase.height + ")");
+  gl.pixelStorei(gl.UNPACK_ALIGNMENT, testCase.alignment);
+  gl.pixelStorei(gl.UNPACK_ROW_LENGTH, testCase.rowLength);
+  gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, testCase.skipPixels);
+  gl.pixelStorei(gl.UNPACK_SKIP_ROWS, testCase.skipRows);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Set up pixel store parameters should succeed");
+
+  var tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_2D, tex);
+
+  var imageSizes = computeImageSizes2D(testCase.width, testCase.height, testCase);
+  var bufferSize = imageSizes.totalSize;
+  var buffer = null;
+  var array;
+
+  // Verify buffer with less than enough size will fail.
+  if (useUnpackBuffer) {
+    buffer = gl.createBuffer();
+    gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer);
+    gl.bufferData(gl.PIXEL_UNPACK_BUFFER, bufferSize - 1, gl.DYNAMIC_DRAW);
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB8, testCase.width, testCase.height, 0,
+                  gl.RGB, gl.UNSIGNED_BYTE, 0);
+  } else {
+    array = setupArrayBuffer(bufferSize - 1, false);
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB8, testCase.width, testCase.height, 0,
+                  gl.RGB, gl.UNSIGNED_BYTE, array);
+  }
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "buffer too small");
+
+  if (__apply_alignment_workaround__)
+    bufferSize += imageSizes.padding;
+  array = setupArrayBuffer(bufferSize, true);
+  if (useUnpackBuffer) {
+    gl.bufferData(gl.PIXEL_UNPACK_BUFFER, array, gl.DYNAMIC_DRAW);
+  }
+  gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB8, testCase.width, testCase.height, 0,
+                gl.RGB, gl.UNSIGNED_BYTE, useUnpackBuffer ? 0 : array);
+  if (testCase.validUnpackParams2D) {
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D with correct buffer size should succeed");
+  } else {
+    wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid unpack params combination");
+    if (!useUnpackBuffer) {
+      gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGB8, testCase.width, testCase.height, 0,
+                    gl.RGB, gl.UNSIGNED_BYTE, null);
+      wtu.glErrorShouldBe(gl, gl.NO_ERROR, "unpack param constraints do not apply if no data are uploaded.");
+    }
+    return;
+  }
+
+  var buffer1 = unpackPixels(array, testCase.width, testCase.height, 1, imageSizes);
+  var buffer2 = getPixelsFromTexture2D(gl, tex, 0, 0, testCase.width, testCase.height);
+  comparePixels(buffer1, buffer2);
+
+  var subWidth = testCase.width - testCase.xoffset;
+  var subHeight = testCase.height - testCase.yoffset;
+  debug("TexSubImage2D : offset = (" + testCase.xoffset + ", " + testCase.yoffset +
+        "), size = (" + subWidth + ", " + subHeight + ")");
+  imageSizes = computeImageSizes2D(subWidth, subHeight, testCase);
+  bufferSize = imageSizes.totalSize;
+
+  if (useUnpackBuffer) {
+    gl.bufferData(gl.PIXEL_UNPACK_BUFFER, bufferSize - 1, gl.DYNAMIC_DRAW);
+    gl.texSubImage2D(gl.TEXTURE_2D, 0, testCase.xoffset, testCase.yoffset,
+                     subWidth, subHeight, gl.RGB, gl.UNSIGNED_BYTE, 0);
+  } else {
+    array = setupArrayBuffer(bufferSize - 1, false);
+    gl.texSubImage2D(gl.TEXTURE_2D, 0, testCase.xoffset, testCase.yoffset,
+                     subWidth, subHeight, gl.RGB, gl.UNSIGNED_BYTE, array);
+  }
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "buffer too small");
+
+  if (__apply_alignment_workaround__)
+    bufferSize += imageSizes.padding;
+  array = setupArrayBuffer(bufferSize, true);
+  if (useUnpackBuffer) {
+    gl.bufferData(gl.PIXEL_UNPACK_BUFFER, array, gl.DYNAMIC_DRAW);
+  }
+  gl.texSubImage2D(gl.TEXTURE_2D, 0, testCase.xoffset, testCase.yoffset, subWidth, subHeight,
+                   gl.RGB, gl.UNSIGNED_BYTE, useUnpackBuffer ? 0 : array);
+  if (testCase.validUnpackParamsForSub2D) {
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage2D with correct buffer size should succeed");
+  } else {
+    wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid unpack params combination");
+    return;
+  }
+
+  var buffer1 = unpackPixels(array, subWidth, subHeight, 1, imageSizes);
+  var buffer2 = getPixelsFromTexture2D(
+      gl, tex, testCase.xoffset, testCase.yoffset, subWidth, subHeight);
+  comparePixels(buffer1, buffer2);
+
+  if (buffer) {
+    gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, null);
+    gl.deleteBuffer(buffer);
+  }
+  gl.bindTexture(gl.TEXTURE_2D, null);
+  gl.deleteTexture(tex);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
+}
+
+function runTestIteration3D(gl, testCase, useUnpackBuffer) {
+  debug("");
+  debug("Texture upload from "  + (useUnpackBuffer ? "unpack buffer" : "client data") +
+        " : alignment = " + testCase.alignment + ", rowLength = " + testCase.rowLength +
+        ", imageHeight = " + testCase.imageHeight + ", skipPixels = " + testCase.skipPixels +
+        ", skipRows = " + testCase.skipRows + ", skipImages = " + testCase.skipImages);
+  debug("TexImage3D : size = (" + testCase.width + ", " + testCase.height + ", " + testCase.depth + ")");
+  gl.pixelStorei(gl.UNPACK_ALIGNMENT, testCase.alignment);
+  gl.pixelStorei(gl.UNPACK_ROW_LENGTH, testCase.rowLength);
+  gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, testCase.imageHeight);
+  gl.pixelStorei(gl.UNPACK_SKIP_PIXELS, testCase.skipPixels);
+  gl.pixelStorei(gl.UNPACK_SKIP_ROWS, testCase.skipRows);
+  gl.pixelStorei(gl.UNPACK_SKIP_IMAGES, testCase.skipImages);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Set up pixel store parameters should succeed");
+
+  var tex = gl.createTexture();
+  gl.bindTexture(gl.TEXTURE_3D, tex);
+
+  var imageSizes = computeImageSizes3D(testCase.width, testCase.height, testCase.depth, testCase);
+  var buffer = null;
+  var array;
+  var bufferSize = imageSizes.totalSize;
+
+  // Verify buffer with less than enough size will fail.
+  if (useUnpackBuffer) {
+    buffer = gl.createBuffer();
+    gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer);
+    gl.bufferData(gl.PIXEL_UNPACK_BUFFER, bufferSize - 1, gl.DYNAMIC_DRAW);
+    gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGB8, testCase.width, testCase.height, testCase.depth, 0,
+                  gl.RGB, gl.UNSIGNED_BYTE, 0);
+  } else {
+    array = setupArrayBuffer(bufferSize - 1, false);
+    gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGB8, testCase.width, testCase.height, testCase.depth, 0,
+                  gl.RGB, gl.UNSIGNED_BYTE, array);
+  }
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "buffer too small");
+
+  if (__apply_alignment_workaround__)
+    bufferSize += imageSizes.padding;
+  array = setupArrayBuffer(bufferSize, true);
+  if (useUnpackBuffer) {
+    gl.bufferData(gl.PIXEL_UNPACK_BUFFER, array, gl.DYNAMIC_DRAW);
+  }
+  gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGB8, testCase.width, testCase.height, testCase.depth, 0,
+                gl.RGB, gl.UNSIGNED_BYTE, useUnpackBuffer ? 0 : array);
+  if (testCase.validUnpackParams3D) {
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage3D with correct buffer size should succeed");
+  } else {
+    wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid unpack params combination");
+    if (!useUnpackBuffer) {
+      gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGB8, testCase.width, testCase.height, testCase.depth, 0,
+                    gl.RGB, gl.UNSIGNED_BYTE, null);
+      wtu.glErrorShouldBe(gl, gl.NO_ERROR, "unpack param constraints do not apply if no data are uploaded.");
+    }
+    return;
+  }
+
+  var buffer1 = unpackPixels(array, testCase.width, testCase.height, testCase.depth, imageSizes);
+  var buffer2 = getPixelsFromTexture3D(
+      gl, tex, 0, 0, 0, testCase.width, testCase.height, testCase.depth);
+  comparePixels(buffer1, buffer2);
+
+  var subWidth = testCase.width - testCase.xoffset;
+  var subHeight = testCase.height - testCase.yoffset;
+  var subDepth = testCase.depth - testCase.zoffset;
+  debug("TexSubImage3D : offset = (" + testCase.xoffset + ", " + testCase.yoffset + ", " +
+        testCase.zoffset + "), size = (" + subWidth + ", " + subHeight + ", " + subDepth + ")");
+  imageSizes = computeImageSizes3D(subWidth, subHeight, subDepth, testCase);
+  bufferSize = imageSizes.totalSize;
+
+  if (useUnpackBuffer) {
+    gl.bufferData(gl.PIXEL_UNPACK_BUFFER, bufferSize - 1, gl.DYNAMIC_DRAW);
+    gl.texSubImage3D(gl.TEXTURE_3D, 0, testCase.xoffset, testCase.yoffset, testCase.zoffset,
+                     subWidth, subHeight, subDepth, gl.RGB, gl.UNSIGNED_BYTE, 0);
+  } else {
+    array = setupArrayBuffer(bufferSize - 1, false);
+    gl.texSubImage3D(gl.TEXTURE_3D, 0, testCase.xoffset, testCase.yoffset, testCase.zoffset,
+                     subWidth, subHeight, subDepth, gl.RGB, gl.UNSIGNED_BYTE, array);
+  }
+  wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "buffer too small");
+
+  if (__apply_alignment_workaround__)
+    bufferSize += imageSizes.padding;
+  array = setupArrayBuffer(bufferSize, true);
+  if (useUnpackBuffer) {
+    gl.bufferData(gl.PIXEL_UNPACK_BUFFER, array, gl.DYNAMIC_DRAW);
+  }
+  gl.texSubImage3D(gl.TEXTURE_3D, 0, testCase.xoffset, testCase.yoffset, testCase.zoffset,
+                   subWidth, subHeight, subDepth,
+                   gl.RGB, gl.UNSIGNED_BYTE, useUnpackBuffer ? 0 : array);
+  if (testCase.validUnpackParamsForSub3D) {
+    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texSubImage3D with correct buffer size should succeed");
+  } else {
+    wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid unpack params combination");
+    return;
+  }
+
+  buffer1 = unpackPixels(array, subWidth, subHeight, subDepth, imageSizes);
+  buffer2 = getPixelsFromTexture3D(gl, tex, testCase.xoffset, testCase.yoffset, testCase.zoffset,
+                                   subWidth, subHeight, subDepth);
+  comparePixels(buffer1, buffer2);
+
+  if (buffer) {
+    gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, null);
+    gl.deleteBuffer(buffer);
+  }
+  gl.bindTexture(gl.TEXTURE_3D, null);
+  gl.deleteTexture(tex);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
+}
+
+function runTests() {
+  var gl = wtu.create3DContext("example", undefined, 2);
+  if (!gl) {
+    testFailed("Fail to get a WebGL context");
+    return;
+  }
+
+  // For 2D cases, depth, zoffset, imageHeight, skipImages are ignored.
+  var testCases = [
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 1, rowLength: 0, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+    { width: 5, height: 7, depth: 4, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 2, rowLength: 0, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+    { width: 6, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 4, rowLength: 0, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+    { width: 5, height: 8, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 8, rowLength: 0, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+
+    // ROW_LENGTH == width
+    { width: 10, height: 9, depth: 2, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 4, rowLength: 10, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+
+    // ROW_LENGTH < width
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 1, rowLength: 4, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 2, rowLength: 4, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 4, rowLength: 4, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 8, rowLength: 4, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+
+    // ROW_LENGTH > width
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 1, rowLength: 6, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 2, rowLength: 7, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 4, rowLength: 8, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+    { width: 5, height: 7, depth: 5, xoffset: 2, yoffset: 3, zoffset: 2,
+      alignment: 8, rowLength: 9, imageHeight: 0, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+
+    // IMAGE_HEIGHT == height
+    { width: 6, height: 7, depth: 4, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 8, rowLength: 0, imageHeight: 7, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+
+    // IMAGE_HEIGHT < height
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 1, rowLength: 0, imageHeight: 6, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 2, rowLength: 0, imageHeight: 6, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 4, rowLength: 0, imageHeight: 6, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 8, rowLength: 0, imageHeight: 6, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: false },
+
+    // IMAGE_HEIGHT > height
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 1, rowLength: 0, imageHeight: 8, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+    { width: 6, height: 7, depth: 3, xoffset: 2, yoffset: 2, zoffset: 1,
+      alignment: 2, rowLength: 0, imageHeight: 9, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+    { width: 7, height: 7, depth: 3, xoffset: 2, yoffset: 4, zoffset: 1,
+      alignment: 4, rowLength: 0, imageHeight: 10, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+    { width: 8, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 8, rowLength: 0, imageHeight: 11, skipPixels: 0, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: true, validUnpackParamsForSub3D: true },
+
+    // SKIP parameters
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 1, rowLength: 0, imageHeight: 0, skipPixels: 10, skipRows: 0, skipImages: 0,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 2, rowLength: 0, imageHeight: 0, skipPixels: 2, skipRows: 8, skipImages: 0,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 4, rowLength: 0, imageHeight: 0, skipPixels: 3, skipRows: 5, skipImages: 1,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 8, rowLength: 0, imageHeight: 0, skipPixels: 7, skipRows: 0, skipImages: 2,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+
+    // all mixed.
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 1, rowLength: 6, imageHeight: 6, skipPixels: 3, skipRows: 5, skipImages: 1,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 2, rowLength: 4, imageHeight: 8, skipPixels: 7, skipRows: 2, skipImages: 2,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 5, height: 7, depth: 3, xoffset: 2, yoffset: 3, zoffset: 1,
+      alignment: 4, rowLength: 10, imageHeight: 2, skipPixels: 0, skipRows: 3, skipImages: 1,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: false },
+    { width: 1, height: 1, depth: 1, xoffset: 0, yoffset: 0, zoffset: 0,
+      alignment: 2, rowLength: 3, imageHeight: 2, skipPixels: 3, skipRows: 5, skipImages: 1,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 17, height: 6, depth: 4, xoffset: 12, yoffset: 3, zoffset: 2,
+      alignment: 2, rowLength: 4, imageHeight: 8, skipPixels: 1, skipRows: 4, skipImages: 2,
+      validUnpackParams2D: false, validUnpackParams3D: false },
+    { width: 8, height: 17, depth: 3, xoffset: 2, yoffset: 13, zoffset: 1,
+      alignment: 4, rowLength: 9, imageHeight: 2, skipPixels: 0, skipRows: 3, skipImages: 1,
+      validUnpackParams2D: true, validUnpackParamsForSub2D: true,
+      validUnpackParams3D: false },
+  ];
+
+  // Upload textures from client data
+  var useUnpackBuffer = false;
+  for (var ii = 0; ii < testCases.length; ++ii) {
+    var testCase = testCases[ii];
+    runTestIteration2D(gl, testCase, useUnpackBuffer);
+    runTestIteration3D(gl, testCase, useUnpackBuffer);
+  }
+
+  // Upload textures from unpack buffer
+  useUnpackBuffer = true;
+  for (var ii = 0; ii < testCases.length; ++ii) {
+    var testCase = testCases[ii];
+    runTestIteration2D(gl, testCase, useUnpackBuffer);
+    runTestIteration3D(gl, testCase, useUnpackBuffer);
+  }
+}
+
+runTests();
+
+debug("");
+var successfullyParsed = true;
+</script>
+<script src="../../../js/js-test-post.js"></script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/texel-fetch-undefined.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/texel-fetch-undefined.html
new file mode 100644
index 0000000000..056deade3b
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/texel-fetch-undefined.html
@@ -0,0 +1,82 @@
+<!--
+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 texel fetch test.</title>
+<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
+<link rel="stylesheet" href="../../../resources/glsl-feature-tests.css"/>
+<script src="../../../js/js-test-pre.js"></script>
+<script src="../../../js/webgl-test-utils.js"></script>
+</head>
+<body>
+<canvas id="c" width="256" height="256"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vertex-shader" type="x-shader/x-vertex">#version 300 es
+  precision highp float;
+  in vec4 aPosition;
+
+  void main() {
+    gl_Position = aPosition;
+  }
+</script>
+<script id="fragment-shader" type="x-shader/x-fragment">#version 300 es
+  precision mediump float;
+  uniform sampler2D uSampler;
+  uniform ivec2 uTestPos;
+
+  out vec4 my_FragColor;
+  void main() {
+    my_FragColor = texelFetch(uSampler, uTestPos, 0);
+  }
+</script>
+<script>
+"use strict";
+description("This test makes sure that texelFetch works to the WebGL 2.0 spec when retrieving a texel outside of the texture's size.");
+
+var wtu = WebGLTestUtils;
+var textureSize = 24;
+
+var gl = wtu.create3DContext('c', undefined, 2);
+
+function testFetchAt(x, y, expectedColor) {
+  debug("");
+  debug("Test fetching a texel of the texture at x = " + x +", y = " + y);
+  gl.uniform2i(uTestPos, x, y);
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.checkCanvas(gl, expectedColor);
+}
+
+var program = wtu.setupProgram(gl, ["vertex-shader", "fragment-shader"]);
+var aPosition = gl.getAttribLocation(program, "aPosition");
+var uTestPos = gl.getUniformLocation(program, "uTestPos");
+
+debug('Creating a texture with size ' + textureSize + '*' + textureSize);
+var tex = gl.createTexture();
+gl.bindTexture(gl.TEXTURE_2D, tex);
+gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+wtu.fillTexture(gl, tex, textureSize, textureSize, [0, 255, 0, 255]);
+
+wtu.setupUnitQuad(gl, aPosition);
+
+testFetchAt(0, 0, [0, 255, 0, 255]);
+testFetchAt(textureSize - 1, textureSize - 1, [0, 255, 0, 255]);
+testFetchAt(textureSize, 0, [0, 0, 0, 0]);
+testFetchAt(0, textureSize, [0, 0, 0, 0]);
+testFetchAt(-1, 0, [0, 0, 0, 0]);
+testFetchAt(0, -1, [0, 0, 0, 0]);
+testFetchAt(-1, 1, [0, 0, 0, 0]);
+
+finishTest();
+</script>
+</body>
+</html>
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/texture-npot.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/texture-npot.html
new file mode 100644
index 0000000000..1d63130eeb
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/texture-npot.html
@@ -0,0 +1,160 @@
+<!--
+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 Non-Power of 2 texture conformance test.</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="example" width="5" height="3" style="width: 40px; height: 30px;"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">
+attribute vec4 vPosition;
+attribute vec2 texCoord0;
+varying vec2 texCoord;
+void main()
+{
+    gl_Position = vPosition;
+    texCoord = texCoord0;
+}
+</script>
+
+<script id="fshader" type="x-shader/x-fragment">
+precision mediump float;
+uniform samplerCube tex;
+varying vec2 texCoord;
+void main()
+{
+    gl_FragColor = textureCube(tex, normalize(vec3(texCoord, 1)));
+}
+</script>
+<script>
+"use strict";
+description(document.title);
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("example", undefined, 2);
+var program = wtu.setupTexturedQuad(gl);
+
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+
+var tests = [
+  { format: gl.RGBA,
+    type: gl.UNSIGNED_BYTE,
+    color: [192, 0, 128, 64],
+    expected: [192, 0, 128, 64],
+    tolerance: 0,
+  },
+  { format: gl.RGB,
+    type: gl.UNSIGNED_BYTE,
+    color: [192, 0, 128],
+    expected: [192, 0, 128, 255],
+    tolerance: 0,
+  },
+  { format: gl.LUMINANCE,
+    type: gl.UNSIGNED_BYTE,
+    color: [192],
+    expected: [192, 192, 192, 255],
+    tolerance: 0,
+  },
+  { format: gl.ALPHA,
+    type: gl.UNSIGNED_BYTE,
+    color: [64],
+    expected: [0, 0, 0, 64],
+    tolerance: 0,
+  },
+  { format: gl.LUMINANCE_ALPHA,
+    type: gl.UNSIGNED_BYTE,
+    color: [192, 64],
+    expected: [192, 192, 192, 64],
+    tolerance: 0,
+  },
+];
+
+tests.forEach(function(test) {
+  debug("");
+  debug("test " + wtu.glEnumToString(gl, test.format) + "/" + wtu.glEnumToString(gl, test.type));
+  var tex = gl.createTexture();
+
+  // Check that an NPOT texture not on level 0 does not generate INVALID_VALUE
+  wtu.fillTexture(gl, tex, 5, 3, test.color, 1, test.format, test.type);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+      "gl.texImage2D with NPOT texture with level > 0 should succeed");
+
+  // Check that an NPOT texture on level 0 succeeds
+  wtu.fillTexture(gl, tex, 5, 3, test.color, 0, test.format, test.type);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+      "gl.texImage2D with NPOT texture at level 0 should succeed");
+
+  // Check that generateMipmap succeeds on NPOT
+  gl.generateMipmap(gl.TEXTURE_2D);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+      "gl.generateMipmap with NPOT texture should succeed");
+
+  // Check that nothing is drawn if filtering is not correct for NPOT
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
+
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.checkCanvas(
+      gl, test.expected,
+      "NPOT texture with TEXTURE_WRAP set to REPEAT should draw");
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_LINEAR);
+
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.checkCanvas(
+      gl, test.expected,
+      "NPOT texture with TEXTURE_MIN_FILTER not NEAREST or LINEAR should draw");
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.checkCanvas(
+      gl, test.expected,
+      "NPOT texture with TEXTURE_MIN_FILTER set to LINEAR should draw.");
+
+  gl.copyTexImage2D(gl.TEXTURE_2D, 1, test.format, 0, 0, 5, 3, 0);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+      "copyTexImage2D with NPOT texture with level > 0 should succeed.");
+
+  // Check that generateMipmap for an POT texture succeeds
+  wtu.fillTexture(gl, tex, 2, 2, test.color, 0, test.format);
+  gl.generateMipmap(gl.TEXTURE_2D);
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR,
+      "gl.texImage2D and gl.generateMipmap with POT texture at level 0 should succeed");
+
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
+  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
+
+  wtu.clearAndDrawUnitQuad(gl);
+  wtu.checkCanvas(
+      gl, test.expected,
+      "POT texture with TEXTURE_MIN_FILTER set to LINEAR_MIPMAP_LINEAR should draw.");
+  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
+});
+
+var successfullyParsed = true;
+
+</script>
+<script src="../../../js/js-test-post.js"></script>
+
+</body>
+</html>
+
-- 
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