Window all blacked in OpenGL 3.1

Mario1159

I'm using QOpenGLWidget and when i set QSurfaceFormat to version 3.1 the screen goes all black, not even clearing the color that it supposed to be.
I have an Intel HD Graphics 3000 which supports up to OpenGL 3.1 (https://www.intel.la/content/www/xl/es/support/articles/000005524/graphics-drivers.html) and my drivers are up to date.
This code is in my main.cpp

    QApplication a(argc, argv);

    a.setAttribute(Qt::AA_UseDesktopOpenGL);

    QSurfaceFormat fmt;

    fmt.setRenderableType(QSurfaceFormat::OpenGL);
    fmt.setProfile(QSurfaceFormat::NoProfile);
    fmt.setVersion(3, 1);
    QSurfaceFormat::setDefaultFormat(fmt);

    MainWindow w;
    w.show();

i have set the UseDesktopOpenGL attribute to force the program to use desktop opengl because normally the opengl version it is set to Opengl ES even if my rendering type is set to OpenGL i dont know why.

In previous version of OpenGL the windows work fine and also i tested changing the QSurfaceFormat

raven-worx

@Mario1159 said in Window all blacked in OpenGL 3.1:

QSurfaceFormat fmt;

fmt.setRenderableType(QSurfaceFormat::OpenGL);
fmt.setProfile(QSurfaceFormat::NoProfile);
fmt.setVersion(3, 1);
QSurfaceFormat::setDefaultFormat(fmt);

why do you need to force those?

Mario1159

@raven-worx because if i comment a.setAttribute(Qt::AA_UseDesktopOpenGL); and put this qDebug() << reinterpret_cast<const char*>(glGetString(GL_VERSION)); in initializeGL in my QOpenGLWidget , i get OpenGL ES 3.0 (ANGLE 2.1.0.unknown hash) instead of desktop opengl 3.1

fcarney

What are you running? What kind of machine?
I have desktops and have tried to enable ES on them and it failed. I figured this is because I am not running an ES capable device. Is it possible your device only supports ES and not desktop GL?

Mario1159

@fcarney a notebook but as i said runs fine in older versions of desktop opengl, i have problems just in 3.1

fcarney

That is weird.

Mario1159

So this problem is related with my system? can someone run a QOpenGLWidget with my format in their pc?