How to initialize a QOpenGLContext on OS X to use OpenGL version 3.3?

Question

I'm running OS X 10.9.4 and Qt 5.3.1. I need to create a QOpenGLContext that uses Open GL 3.3. My system reports 100% compatibility with OpenGL 3.3, however I am getting a context that supports 2.1 only. As well, calling versionFunctions() returns 0.

What is the correct modification to, say, the OpenGL Window Example ( http://qt-project.org/doc/qt-5/qtgui-openglwindow-example.html ) that makes it possible to use OpenGL 3.3? I've tried to set the desired version on the QSurfaceFormat, but I haven't been able to make it work on this system (on Windows, I get a context with OpenGL version that matches the highest supported by that system — by default.)

Answer 1

我的问题得到了回答，问题是当我调用QSurfaceFormat :: setVersion（3,3）时，还需要先调用QSurfaceFormat :: setProfile（QSurfaceFormat :: CoreProfile），然后再将生成的QSurfaceFormat传递给setFormat。