Screen flickering when resizing window | Godot Engine | Page 1

narrow gazelle May 30, 2025, 12:51 AM

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Hi! I'm experiencing a weird screen flickering issue when I resize my window in godot. I've attached a video of the issue. I'm using godot 4.4.1 and I'm on Mac but I've confirmed that the issue is also present on Linux.

I'm not too sure if this is an engine issue or a 'me' issue so I'll explain what I'm doing.

The window starts off 256x256 in the bottom right corner. When the menu button is clicked, I resize the window to 256x768 and then repositioned to the bottom right. I'll attach my code below in case you are curious. I'd love for some help as to why this is occuring and what I can do to fix this. Thank you!

signal close_window


func _handle_open_menu() -> void:
    open_tab(menu_window)


func open_tab(tab: Control) -> void:
    if !current_open_tab:
        current_open_tab = tab
        reposition_window(true)
        current_open_tab.show()
    elif tab != current_open_tab:
        current_open_tab.hide()
        current_open_tab = tab
        reposition_window(true)
        current_open_tab.show()
    elif tab == current_open_tab:
        current_open_tab.hide()
        current_open_tab = null
        reposition_window(false)


func close_tab() -> void:
    if current_open_tab:
        current_open_tab.hide()
        current_open_tab = null
        reposition_window(false)


func _ready() -> void:
    reposition_window(false)
    open_menu.pressed.connect(_handle_open_menu)
    close_window.connect(close_tab)

    shop_window.back_button.pressed.connect(_handle_open_menu)
    inventory_window.back_button.pressed.connect(_handle_open_menu)
    debug_window.back_button.pressed.connect(_handle_open_menu)

    menu_window.close_button.pressed.connect(close_tab)
    menu_window.open_inventory_button.pressed.connect(func(): open_tab(inventory_window))
    menu_window.open_store_button.pressed.connect(func(): open_tab(shop_window))
    menu_window.open_settings_button.pressed.connect(func(): open_tab(debug_window))
    menu_window.open_garden_button.pressed.connect(func(): print("Garden"))





func reposition_window(menu_open: bool) -> void:
    var screen_size: Vector2i = DisplayServer.screen_get_size()

    var new_size = Vector2(256, 256)

    if menu_open:
        new_size = Vector2(256, 256*3)

    if screen_size.y > 1080:
        new_size *= 2

    DisplayServer.window_set_size(new_size)

    var window_size: Vector2i = DisplayServer.window_get_size()

    DisplayServer.window_set_position(
        Vector2i(screen_size.x - window_size.x, screen_size.y - window_size.y)
    )

tulip python May 30, 2025, 1:15 AM

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What's the undesired behaviour on the video? What is it supposed to look like?

ashen dawn May 30, 2025, 1:52 AM

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i'm not sure i can see the flickering issue in the video

narrow gazelle May 31, 2025, 3:45 PM

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tulip python What's the undesired behaviour on the video? What is it supposed to look like?

The undesirable behavior is that the menu opens on top of the dog and not above the dog. It's supposed to take up the 256x512 rectangle above the dog.

narrow gazelle May 31, 2025, 3:45 PM

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ashen dawn i'm not sure i can see the flickering issue in the video

I slowed down the video to show what is happening but at 60fps you see a white flicker and then the menu open

tulip python May 31, 2025, 3:46 PM

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Ahhh, this makes more sense now with the video being slowed down

narrow gazelle May 31, 2025, 3:47 PM

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I figured this shouldn't flicker because i call reposition_window(true) first and then current_open_tab.show(). I should also mention that I am resizing the window and repositioning it with my function reposition_window. The original window starts out as 256x256 but opening the menu resizes it to 256x768

tulip python May 31, 2025, 5:30 PM

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hmm

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You could try using the popup function on the window, instead of setting the size and showing the window separately

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Also, have you tried showing the window and then setting the size & position? Does the issue happen with that order of events?

#Screen flickering when resizing window