First:  The active learning debacle
	I forgot to post the shaders
	There is no error handling if open fails
		Or, for that matter, if anything else fails!
	Could we add that?
		For sure

Today:  Let's develop an orderly, cross-platform demo
	Maybe it'll actually work!

Start point:  Windows
	But we'll move away from anything not cross-platform

The GPU programming demo I had around:
	Why start here?  Mostly because I had it
	Quick tour

Not portable:
	Unix-style file management, without a lot of preprocessor translation
		Solution:  fopen/fread/fclose
		Let's improve things and remove the length limit plus add error handling
	cglm seems to be trouble
		We can use C++ glm
		namespace?
	Anything else?
		I'm sure something will break when we move between platforms!

Note on the depth buffering:
	If I turn it on, I need to clear the depth buffer bit too!
	That's what went wrong last time

Active learning:
	Does last time's task make sense with the new C++ demo?
		I suspect it will
		Include shaders this time...
		I'll make a .zip for Linux and Windows