OpenGL deprecation issues

[superwills]

A lot of the code shown here is really great, but some things, like display lists have been deprecated in OpenGL 3.1 (WGL fonts etc)

That means a lot of this code appears to work in some OpenGL programs, as long as you haven't kicked your OpenGL state machine into GL 3.1+ mode

Once you kick your OpenGL state machine into GL 3.1+ mode, it seems a lot of the deprecated features just stop working and you get a blank screen

Deprecation warnings should be added to this code if possible so people know that parts of this code just won't work on later releases of OpenGL

[superwills]

I found adding an extra glDisable( GL_TEXTURE_2D ) call actually made my display lists work (even though there isn't any corresponding glEnable( GL_TEXTURE_2D ) in the program!). I think my program is crossing into some OpenGL UB and it's probably going to be untrustworthy if using any deprecated features