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✔ WebGL in Firefox

WebGL in Mozilla Firefox is supported and enabled by default since the Firefox 4 and the Firefox for Android 19.

To enable or disable WebGL in Firefox, follow the simple steps:

1. In the address bar, type about:config, without any http:// or www
2. Click the button labeled «I'll be careful, I promise!»
3. In Search field, enter webgl.disabled string
4. Toggle webgl.disabled to true to disable WebGL, or to false to enable WebGL, please do not confuse

WebGL 2.0 :

To enable WebGL2 in Firefox, go to about:config and toggle this two preferences:

webgl.enable-prototype-webgl2 and webgl.disable-angle

The second preferences is temporarily required to run webgl2/experimental-webgl2 contexts on Firefox, and may produce a bad effect for WebGL 1.0 apps.

As well as first one, maybe, since this is experemental and not enabled by default.

✔ WebGL in Chrome

WebGL in Google Chorme and Chromium is supported and enabled by default since the Chorme version 8.

To disable WebGL, start Google Chrome with one of these command-line options:

1. --disable-webgl turn off the WebGL
2. --disable-3d-apis turn off all client-visible 3D APIs, in particular the WebGL and the Pepper 3D

These instructions are valid for all Chromium-based web browsers, in the same way you can setup WebGL in Opera and Vivaldi.

WebGL 2.0 :

Experiemental WebGL2 support is available in recent Chrome Canary builds.

In order to enable it you must pass the --enable-unsafe-es3-apis flag on the command line.

✔ WebGL in Safari

WebGL is available and enabled by default in the latest Apple Safari releases.

Safari — the only web browser that has the ability to Ask before executing WebGL scripts on a random websites. You can easily enable or disable WebGL globally or for a specific site, by going the menu Preferences → Security → Allow WebGL → Website Settings.

WebGL 2.0: so far no info about supporting WebGL2 in Safari.

! WebGL in Internet Explorer

WebGL enabled by default since IE 11, and there is no way to turn it off.

If you have solution please tell us!

WebGL 2.0: so far no info about supporting WebGL2 in Internet Explorer.

This is a proper JavaScript function to detect WebGL support, with all kind of experimental WebGL context names and with checking of special cases, such as blocking WebGL functions by NoScript or TorBrowser.

1. function webgl_detect()
2. {
3.     if (!!window.WebGLRenderingContext) {
4.         var canvas = document.createElement("canvas"),
5.              names = ["webgl", "experimental-webgl", "moz-webgl"],
6.                 gl = false;
8.         for(var i in names) {
9.             try {
10.                 gl = canvas.getContext(names[i]);
11.                 if (gl && typeof gl.getParameter == "function") {
12.                     /* WebGL is enabled */
13.                     /* return true; */
14.                     return names[i];
15.                 }
16.             } catch(e) {}
17.         }
19.         /* WebGL is supported, but disabled */
20.         return false;
21.     }
23.     /* WebGL not supported*/
24.     return false;
25. }

The following WebGL demo script shows the gathering of a web browser identifiers through the WebGL, as in the tables above.

1. (function()
2. {
3.     var context_name = webgl_detect();
5.     if (context_name) {
6.         var gl = document.createElement("canvas").getContext(context_name);
8.         console.log("WebGL Version: " + gl.getParameter(gl.VERSION));
9.         console.log("Shading Language Version: " + gl.getParameter(gl.SHADING_LANGUAGE_VERSION));
10.         console.log("WebGL Vendor: " + gl.getParameter(gl.VENDOR));
11.         console.log("WebGL Renderer: " + gl.getParameter(gl.RENDERER));
12.         /* full list of exportable WebGL variables can be found here: */
13.         /* https://www.khronos.org/registry/webgl/specs/1.0/#WEBGLRENDERINGCONTEXT */
14.     } else {
15.         console.log("WebGL is Not Available");
16.     }
18. })();

1. WebGL Specification — Khronos Group
2. WebGL Public Wiki — Khronos Group
3. WebGL Security white paper — Khronos Group
4. WebGLReport, that reports a browser's WebGL capabilities — Github