⚠️ Beta State

PyBevy is in an early and experimental stage. The API is incomplete, subject to breaking changes without notice, and you should expect bugs. Many features are still under development.

Transparent Window

Create a window with a transparent background.

Introduction

A transparent window lets the desktop show through where nothing is drawn. This requires setting both the window's transparent flag and a clear color with alpha 0.

from pybevy.prelude import *
from pybevy.window import Window, WindowPlugin

Setup

def setup(commands: Commands) -> None:
    commands.spawn(Camera2d())
 
@entrypoint
def main(app: App) -> App:
    window = Window(title="Transparent Window", transparent=True)
    return (
        app
        .insert_resource(ClearColor(Color.srgba(0.0, 0.0, 0.0, 0.0)))
        .add_plugins(DefaultPlugins().build().set(WindowPlugin(primary_window=window)))
        .add_systems(Startup, setup)
    )
 
if __name__ == "__main__":
    main().run()

Running this example

Use PyBevy's hot reload feature to run and develop this example. If you don't have PyBevy installed, check out the Quick Start guide.

$pybevy watch transparent_window.py

The code will reload automatically when you make changes to the file.

From Python to Rust

Notice how the core concepts in the code—Commands, Assets, App, and Systems—are identical to the original Bevy example?

This is the power of pybevy! It lets you learn Bevy's powerful, data-driven architecture in friendly Python.

When your project grows and you're ready for maximum, native performance, you'll already know the concepts to start writing systems in Bevy Engine with Rust.