Create a Core Profile OpenGL app

Robinsondesbois

Hi,

I want to create an OpenGL app with Qt but my code segfault (11) on mac. My code is very short. The same code works with OpenGL 2.1.

#include <GL/glew.h>                                   
#include <iostream>                                    
                                                       
#include <QApplication>                                
#include <QOpenGLWidget>                               
                                                       
int main(int argc, char** argv){          
        QApplication app(argc, argv);                  
                                                       
        QSurfaceFormat format;                         
        format.setMajorVersion(3);                     
        format.setMinorVersion(2);                     
        format.setProfile(QSurfaceFormat::CoreProfile);
                                                       
        QOpenGLWidget opengl;                          
        opengl.setFormat(format);                      
        opengl.setGeometry(30, 30, 600, 600);          
        opengl.show();                                 
                                                       
        return app.exec();                             
}

[EDIT]: I just test on Windows and it's works. What is the problem with mac ?

Best regards,
Robin

Robinsondesbois

Ok I found the solution. I suppose mac use only the default opengl surface.
I juste change my code like that: QSurfaceFormat::setDefaultFormat( format );

Tell me why if you know :)

Thoenu

Hi,
OSX only supports OpenGL 4.1. Core Profile and Compatibility mode (means only 4.1. Specification works). Compatibility Mode is only supported until OpenGL 2.1. So for me it works this way:

#ifdef APPLE
format.setVersion(4, 1);
format.setProfile(QSurfaceFormat::CoreProfile);
#else
format.setVersion(4, 5);
format.setProfile(QSurfaceFormat::CompatibilityProfile);
#endif
QSurfaceFormat::setDefaultFormat(format);