Unsolved Not able to Draw using QOpenGLWidget
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I have upgraded my project from QGLWidget to QOpenglWidget.
The project worked fine using QGL widget but now i am not able to see the rendered output.
class GLWidget : public QOpenGLWidget { Q_OBJECT; public: explicit GLWidget(QWidget *parent = 0); // ~GLWidget(); void initializeGL() override; void paintGL() override; void resizeGL(int w, int h) override; QTimer timer; QElapsedTimer elapsedtimer; private: int width; int height; }; /////////////////////////////////////////////////////////////////////////////////// GLWidget::GLWidget(QWidget *parent) : QOpenGLWidget(parent) { } ////////////////////////////////////////////////////////////////////////////////////////// void GLWidget::initializeGL() { GLenum GlewInitResult; glewExperimental = GL_TRUE; GlewInitResult = glewInit(); if (GLEW_OK != GlewInitResult) // Check if glew is initialized properly { QMessageBox msgBox; msgBox.setText("Not able to Initialize Glew"); msgBox.exec(); } } ///////////////////////////////////////////////////////////////////////////////////////////// void GLWidget::paintGL() { // Painting commands here which are opengl commands using GLEW. glBindFramebuffer(GL_FRAMEBUFFER, 0); // Render in default framebuffer glClear(GL_COLOR_BUFFER_BIT); RenderCube(); } /////////////////////////////////////////////////////////////////////////////////////////// IN the Main function QApplication application(argc, argv); QSurfaceFormat format; format.setDepthBufferSize(24); format.setStencilBufferSize(8); format.setVersion(3, 2); format.setProfile(QSurfaceFormat::CoreProfile); QSurfaceFormat::setDefaultFormat(format); return application.exec();
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Hi,
Please provide a complete minimal compilable example that shows your issue.