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General / 2 windows each with it's own rendering threa

« on: May 05, 2020, 05:35:53 pm »

what i'm doing should be very simple and yet every time i run this (on linux) i get a different error message, sometimes it runs for a few seconds before becoming unresponsive.

#include <SFML/Window.hpp>
#include <SFML/System.hpp>

class Application
{
public:
    sf::Window *mainWindow;
    sf::Window *debugWindow;
    Application(sf::Window *main, sf::Window *debug)
    {
        mainWindow = main;
        debugWindow = debug;
    }
    void execute()
    {
        while (mainWindow->isOpen())
        {
            // do something...
        }
    }
};
void ThreadA(sf::Window *window)
{
    window->setActive(true);

    while (window->isOpen())
    {
        sf::Event event;
        while (window->pollEvent(event))
            if (event.type == sf::Event::Closed)
                window->close();
        window->display();
    }
}
void ThreadB(sf::Window *window)
{
    window->setActive(true);

    while (window->isOpen())
    {
        sf::Event event;
        while (window->pollEvent(event))
            if (event.type == sf::Event::Closed)
                window->close();
        window->display();
    }
}
int main()
{
    sf::Window mainWindow(sf::VideoMode(1600, 900), "main window");
    sf::Window debugWindow(sf::VideoMode(400, 400), "debug window");
    mainWindow.setActive(false);
    debugWindow.setActive(false);
    Application Application(&mainWindow, &debugWindow);
    sf::Thread mainThread(&ThreadA, &mainWindow);
    mainThread.launch();
    sf::Thread debugThread(&ThreadB, &debugWindow);
    debugThread.launch();
    Application.execute();
    return 0;
}

i followed the tutorials step by step and i can't find what i'm doing wrong.