Sfml: Fullscreen does not go over task bars on top and left on Ubuntu 16.04

[naezith]

Fullscreen does not go over task bars on top and left on Ubuntu 16.04, SFML 2.4.1.

YouTube's and other games' fullscreen modes work normally.

Here is a screenshot of it.
Here is the minimal code:

#include <SFML/Graphics.hpp>

int main (int argc, char* argv[]) {
    sf::RenderWindow window(sf::VideoMode(1920, 1080), "Window", sf::Style::Fullscreen);

    while (window.isOpen()) {
        sf::Event event;
        while (window.pollEvent(event)) {
            switch(event.type) {
                case sf::Event::Closed:
                    window.close();
                    break;
            }
        }

        window.clear();
        window.display();
    }

    return 0;
}

[MarioLiebisch]

Always thought this is the expected behavior on Unity, although I might be wrong. Only using Linux for occasional test builds, no full time user here.

[naezith]

YouTube's and other games' fullscreen modes work normally like in Windows though.

[MarioLiebisch]

Okay, then this should probably be changed. By someone actually knowing X11 * shudder *. Any volunteers?

[naezith]

This is very critical for my game. Performance is very poor at windowed mode so fullscreen is a must. Can anyone help with this?

[MarioLiebisch]

Tried and clearly too much X11/XRandR shenanigans going on for my likings. It seems like we'd have to use XRandR 1.2 and newer the way described here.

[naezith]

I just tested @bloodsword 's commit, it fixes the issue. Please add this.

[eXpl0it3r]

Can anyone test master which includes the fix by @bloodsword?

[danieljpetersen]

This fixes the issue for me. Tested on Ubuntu 16.04.5 (Unity) in Virtualbox.

• Using latest version on master (5e10e1f0c9b0a5c095df0f8e9be96914f75297d0), fullscreen takes up the entire monitor as expected.
• I chose a build a few commits before the latest master (be3556d76ab956bab63d96b1d117546e6bf9897e) and was able to replicate the issue, fullscreen did not cover the top bar / side bar.

[TheMaverickProgrammer]

Same tested on Ubuntu 18. Greenlit.

[eXpl0it3r]

Thanks, forgot to close it this after the merge. 🙂