diff -r 000000000000 -r 6474c204b198 browser/devtools/tilt/test/browser_tilt_gl02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/tilt/test/browser_tilt_gl02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,44 @@
+/* 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_gl02 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.fill([1, 0, 0, 1]);
+  ok(isApproxVec(renderer._fillColor, [1, 0, 0, 1]),
+    "The fill color wasn't set correctly.");
+
+  renderer.stroke([0, 1, 0, 1]);
+  ok(isApproxVec(renderer._strokeColor, [0, 1, 0, 1]),
+    "The stroke color wasn't set correctly.");
+
+  renderer.strokeWeight(2);
+  is(renderer._strokeWeightValue, 2,
+    "The stroke weight wasn't set correctly.");
+  is(gl.getParameter(gl.LINE_WIDTH), 2,
+    "The stroke weight wasn't applied correctly.");
+}