How can I make a transparent app on Windows?

Help Programming
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1

Godot Version

4.4.1

Question

Hi everyone,
Is it possible to do this directly in the engine? Like in this Unity tutorial:

2

Yes, it’s possible (as long as the OS windowing compositor is capable of) You’ll need to enable the following project settings:

  • Display/Window/Borderless
  • Display/Window/Transparent
  • Display/Window/Per Pixel Transparency
  • Rendering/Viewport/Transparent Background

You’ll need to enable Advanced Settings to be able to see some of those properties.

3

i have big problem with mouse_passthrough

saw few videos but didn’t manage understand how did it work .
and according to comments it doesn’t work on different drivers
like this one;

4

As explained in the documentation you need to enable Window.mouse_passthrough and set the Window.mouse_passthrough_polygon to specify the polygon where the mouse events will be intercepted by the app and won’t be pass through. Also, as explained in the documentation:

Note: On Windows, the portion of a window that lies outside the region is not drawn, while on Linux (X11) and macOS it is.

5

look at the comments in her itch io and yt , you will see many compline its not working as expected

6

After you set all the transparent project setting to true, you need to setup the viewport in code.
here is my code to make the window transparent:

func transparentize_window():
	var _rid = get_tree().get_root().get_viewport_rid()
	RenderingServer.viewport_set_transparent_background(_rid, true)
	DisplayServer.window_set_flag(DisplayServer.WINDOW_FLAG_TRANSPARENT,true)

Run the method in _ready()