ALLEGRO_FULLSCREEN_WINDOW doesn't work with al_set_display_flags() under ubuntu

[ateneouw]

I'm writing an Emulator and can't change to full screen mode using ALLEGRO_FULLSCREEN_WINDOW passing the argument to al_set_display_flags().
When i'm going to change to fullscreen mode i do a:

al_set_display_flag(disp, ALLEGRO_FULLSCREEN_WINDOW, true);

I'm using last allegro release which is allegro-5.2.10.1.tar.gz.

In windows it just work perfect. There seems to be a problem in my ubuntu linux with NVIDIA drivers (i'm using the last release)

Anyway with ALLEGRO_FRAMELESS and ALLEGRO_MAXIMIZED there are no problems in my linux.

Is a bug problem or i am making something wrong?

[SiegeLord]

What is your Linux version? What desktop environment? Also, what happens when you try calling al_set_display_flag?

[ateneouw]

My linux version is:

Linux lucas-linux 6.8.0-51-generic #52-Ubuntu SMP PREEMPT_DYNAMIC Thu Dec 5 13:09:44 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

The window is initially a windowed one calling:
al_set_new_display_flags(ALLEGRO_OPENGL_3_0 | ALLEGRO_GTK_TOPLEVEL | ALLEGRO_WINDOWED);
After that i call al_create_display(width, height)
So i added an option to go to fullscreen mode and i call what i post above al_set_display_flag(disp, ALLEGRO_FULLSCREEN_WINDOW, true); Then try to go back to windowed i call it again but with the parameter as false.

I have test with ALLEGRO_FRAMELESS and ALLEGRO_MAXIMIZED ant there are not problems. The emu switches between having frameless window and a framed one.

[SiegeLord]

Please try creating the display with the ALLEGRO_RESIZABLE flag as well, and then handle the event in your event loop as:

if (event.type == ALLEGRO_EVENT_DISPLAY_RESIZE) {                                                                                                                                                   
   al_acknowledge_resize(display);                                                                                                                                                                       
}