Closed luntik2012 closed 7 years ago
Thanks for this feedback.
setBackgroundColor(color)
simply calls qglClearColor(color)
. This
crash hence seems to be Qt-related. You can confirm this by
instantiating a plain QGLWidget and calling qglClearColor(Qt::red)
.
This should crash too, and you may want to check your OpenGl
configuration.
I had this issue on win7, now I've tested it on linux. I think you cannot just call QGLWidget::qglClearColor(QColor(Qt::red));
So there is my code:
// mainwindow.h
#pragma once
#include <QMainWindow>
#include <QGL>
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private:
QGLWidget *m_viewer;
};
// mainwindow.cpp
#include "mainwindow.h"
#include <qgl.h>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent)
{
setMinimumHeight(480);
setMinimumWidth(640);
m_viewer = new QGLWidget(this);
// m_viewer->qglClearColor(QColor(Qt::red));
this->setCentralWidget(m_viewer);
}
MainWindow::~MainWindow()
{
delete m_viewer;
}
It crashes only with uncommented 'm_viewer->qglClearColor(QColor(Qt::red));' I cannot debug it, because I don't have qt sources compiled right now. Just segfault
~$ qmake --version
QMake version 3.0
Using Qt version 5.5.1 in /usr/lib/x86_64-linux-gnu
PS: sorry for editing, ctrl+enter... PPS: I really don't think it's related to my graphics setup. Two different OS, two different PC, two different qt versions
Thanks a lot for this feedback.
I'll close this since it is not a QGLViewer specific issue.
I wonder if this could be a problem with your configuration, since I could not find other similar issues reported on the web.
ASSERT: "false" in file qgl.cpp, line 128