1 files changed, 79 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/attribs/gl-disabled-vertex-attrib.html b/dom/canvas/test/webgl-conf/checkout/conformance/attribs/gl-disabled-vertex-attrib.html
new file mode 100644
index 0000000000..f4f8997449
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance/attribs/gl-disabled-vertex-attrib.html
@@ -0,0 +1,79 @@
+<!--
+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 Disabled Vertex Attrib 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="50" height="50">
+</canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">
+attribute vec4 a_position;
+attribute vec4 a_color;
+varying vec4 v_color;
+bool isCorrectColor(vec4 v) {
+  return v.x == 0.0 && v.y == 0.0 && v.z == 0.0 && v.w == 1.0;
+}
+void main() {
+  gl_Position = a_position;
+  v_color = isCorrectColor(a_color) ? vec4(0, 1, 0, 1) : vec4(1, 0, 0, 1);
+}
+</script>
+
+<script id="fshader" type="x-shader/x-fragment">
+precision mediump float;
+varying vec4 v_color;
+void main() {
+  gl_FragColor = v_color;
+}
+</script>
+
+<script>
+"use strict";
+var wtu = WebGLTestUtils;
+description();
+
+var gl = wtu.create3DContext("example");
+
+var numVertexAttribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
+for (var ii = 0; ii < numVertexAttribs; ++ii) {
+  var colorLocation = (ii + 1) % numVertexAttribs;
+  var positionLocation = colorLocation ? 0 : 1;
+
+  if (positionLocation != 0) {
+    // We need to create a new 3d context for testing attrib 0
+    // since we've already effected attrib 0 on other tests.
+    gl = wtu.create3DContext();
+  }
+
+  debug("testing attrib: " + colorLocation);
+  var program = wtu.setupProgram(
+      gl,
+      ['vshader', 'fshader'],
+      ['a_position', 'a_color'],
+      [positionLocation, colorLocation]);
+  var gridRes = 1;
+  wtu.setupIndexedQuad(gl, gridRes, positionLocation);
+  wtu.clearAndDrawIndexedQuad(gl, gridRes);
+  wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green");
+}
+wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors");
+
+var successfullyParsed = true;
+</script>
+<script src="../../js/js-test-post.js"></script>
+
+</body>
+</html>
+