New version is 20120710 (revision 2079). It produces slightly smaller file 391,995 vs 392,330 bytes

@alteredq could you try this one?

This was breaking it on Windows.

Old one was breaking on multiplications in code snippets.

Here gains are a bit smaller but still quite noticeable on slow machines: 20 fps => ~25-27 fps

It runs 60+ fps on my Nvidia Quadro 2000M but it suffers a lot on ATI 3650M at ~20 fps (these changes bumped it up to ~30 fps).

Added corresponding example. Tweaked bit previous bump map example.

- Add parameter for vertex skimming
- Minimize square root calculations

I find dark background intimidating. Specially for newcomers.