AFAIK if you're not uploading any data then there's no reason to call generateMipmap?

…ter copies the Buffer object

This commit switches to AMD for the module system and uses webpack/babel
to build lib/gli.all.js. This means you can use ES6 code in the source
and it should be converted to ES5. It also means there's no need to
add files to both the loaded and the buildscript as webpack can
figure out the files.

The chrome extension works in both release and debug mode
and embed.js seems to work in both release and debug mode.
Also tested firefox in release. Safari I can't test
as the extension no longer works even without these changes.

A few caveats: Because the debug mode uses require.js
there *may* be issues with using debug mode on pages
that use require.js themselves. Non-debug mode should
not have that issue.

Another issue is in debug mode things are finicky
in that it's possible window.onload could fire
before `getContext` has been wrapped. At the moment
it seems to be working but just in case, for those
cases you can (debug mode with embed.js only) you
can wait for `gliready` instead of load. In other words
assuming you have some code like this

    window.onload = runMyApp;

You'd change it to

    window.addEventListener('gliready', runMyApp);

Again, only when using embed.js in debug mode.

I started adding these because I thought I was going to need more shaders to render textures.
It turns out I didn't need to do that but still it seems like a good idea to share some code.

note: still to todo is supporting texImage3D etc... for uploading data

We need this because in WebGL2 samplers are format dependent

This way you can see small images

Probably some major refactoring need to support 3d and 2d array textures

First off how did this ever work. But secondly why did this suddenly start being an issue. What did I change/break

Also note that if I debug http://twgljs.org/examples/textures.html and pick to browse all textures I see the live updated texture update live in the preview. Really? Is that's suppose to happen?

https://jsfiddle.net/greggman/1komoa69/