[Development] QT5 OpenGL question

Giuseppe D'Angelo giuseppe.dangelo at kdab.com
Fri Aug 2 14:09:41 CEST 2013

Il 02/08/2013 14:01, Jiergir Ogoerg ha scritto:
> On your later point - could you please elaborate on why you need the GL
> function addresses to be context-specific? I've used freeglut and GLFW
> before and never cared of had issues with this.

Because the function pointers returned from a given context are valid 
*only if used within that context* (i.e. when that context is active).

That's why you ask a QOpenGLContext object to give you its 
context-specific set of resolved function pointers. Any library that 
gives you only one set of function pointers can't therefore handle the 
situation in which you have multiple contextes (possibly on multiple GPUs).

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