drawText at paint callback of OpenGLAppComponent

[anthony-nicholls]

I might be wrong but I think this is issue.

Glyph Memory Allocation

Hi all, I've been experimenting with drawing in to a cached Image on my own Thread to keep complicated draw routines off the Message Thread, and I have discovered some strange memory behaviour in the OSXTypeface.  Just to note that I'm seeing this using the tip of the Juce repo.   When drawing in to a Graphics object generated on a Thread which isn't the Message Thread (i.e. not one handed to the Component::paint() method), I am seeing constant allocation of memory stacking up over time in th…