diff -r 000000000000 -r 6474c204b198 browser/devtools/tilt/test/browser_tilt_gl03.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/tilt/test/browser_tilt_gl03.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,67 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+let isWebGLAvailable;
+
+function onWebGLFail() {
+  isWebGLAvailable = false;
+}
+
+function onWebGLSuccess() {
+  isWebGLAvailable = true;
+}
+
+function test() {
+  if (!isWebGLSupported()) {
+    info("Skipping tilt_gl03 because WebGL isn't supported on this hardware.");
+    return;
+  }
+
+  let canvas = createCanvas();
+
+  let renderer = new TiltGL.Renderer(canvas, onWebGLFail, onWebGLSuccess);
+  let gl = renderer.context;
+
+  if (!isWebGLAvailable) {
+    return;
+  }
+
+
+  renderer.defaults();
+  is(gl.getParameter(gl.DEPTH_TEST), true,
+    "The depth test wasn't set to the correct default value.");
+  is(gl.getParameter(gl.STENCIL_TEST), false,
+    "The stencil test wasn't set to the correct default value.");
+  is(gl.getParameter(gl.CULL_FACE), false,
+    "The cull face wasn't set to the correct default value.");
+  is(gl.getParameter(gl.FRONT_FACE), gl.CCW,
+    "The front face wasn't set to the correct default value.");
+  is(gl.getParameter(gl.BLEND), true,
+    "The blend mode wasn't set to the correct default value.");
+  is(gl.getParameter(gl.BLEND_SRC_ALPHA), gl.SRC_ALPHA,
+    "The soruce blend func wasn't set to the correct default value.");
+  is(gl.getParameter(gl.BLEND_DST_ALPHA), gl.ONE_MINUS_SRC_ALPHA,
+    "The destination blend func wasn't set to the correct default value.");
+
+
+  ok(isApproxVec(renderer._fillColor, [1, 1, 1, 1]),
+    "The fill color wasn't set to the correct default value.");
+  ok(isApproxVec(renderer._strokeColor, [0, 0, 0, 1]),
+    "The stroke color wasn't set to the correct default value.");
+  is(renderer._strokeWeightValue, 1,
+    "The stroke weight wasn't set to the correct default value.");
+  is(gl.getParameter(gl.LINE_WIDTH), 1,
+    "The stroke weight wasn't applied with the correct default value.");
+
+
+  ok(isApproxVec(renderer.projMatrix, [
+    1.2071068286895752, 0, 0, 0, 0, -2.4142136573791504, 0, 0, 0, 0,
+    -1.0202020406723022, -1, -181.06602478027344, 181.06602478027344,
+    148.14492797851562, 181.06602478027344
+  ]), "The default perspective projection matrix wasn't set correctly.");
+
+  ok(isApproxVec(renderer.mvMatrix, [
+    1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1
+  ]), "The default model view matrix wasn't set correctly.");
+}