Per-feature headers and gl namespace

[bekorn]

I liked the idea of per-feature headers very much. However I was hoping for a stricter implementation. Even though I include only the gl45core, deprecated functions are accessible through the gl namespace. Below is a test project

Currently line 6 gives an error but line 5 does not. Is there a way to use glbinding where both lines give an error, i.e. defined gl functions are the only ones from the included feature header?

[scheibel]

Nice catch, although this is actually a design principle of glbinding.

Can you elaborate a little bit more on the intended use? Do you plan to detect all non-conforming uses against an OpenGL 4.5 Core context?

As of now, I can imagine two different solutions we could pursue:

1. Finally work on Add flags for feature and profile generation khrbinding-generator#1 to allow for a glbinding build that only supports a subset of features (e.g., only 45core)
2. Provide a compile-time definition that renames the general gl namespace to indicate an internal-only use, such that accidental use is more difficult.