Window transparency broken on Windows

[aevyrie]

Bevy version

main

The transparent_window example appears to have broken.

2023-02-07T09:15:10.694725Z  INFO bevy_render::renderer: AdapterInfo { name: "NVIDIA GeForce RTX 3050 Ti Laptop GPU", vendor: 4318, device: 9632, device_type: DiscreteGpu, driver: "NVIDIA", driver_info: "527.56", backend: Vulkan }
2023-02-07T09:15:10.985257Z  INFO bevy_diagnostic::system_information_diagnostics_plugin::internal: SystemInfo { os: "Windows 11 Home", kernel: "22621", cpu: "11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz", core_count: "8", memory: "63.7 GiB" }

[Aceeri]

Can't seem to repro this myself, going to try updating my drivers. Maybe should try a cargo clean/cargo run --example transparent_window

[minstrel1]

Same issue occurred on Mac OS on Metal.
SystemInfo { os: "MacOS 12.1 ", kernel: "21.2.0", cpu: "Apple M1", core_count: "8", memory: "8.0 GiB" }

[mockersf]

This is known, see the docs on https://dev-docs.bevyengine.org/bevy/prelude/struct.Window.html#structfield.transparent

I opened a PR to improve the situation on macOS: #7617

On windows, it should be fixed by latest winit update, but I can't confirm it myself.

[james7132]

Can confirm that the latest winit update has fixed this on Windows.

[mockersf]

Doc should be updated to remove mention of issues on windows:

bevy/crates/bevy_window/src/window.rs

Lines 130 to 135 in 2344b94

	/// ## Platform-specific
	/// - iOS / Android / Web: Unsupported.
	/// - macOS X: Not working as expected.
	/// - Windows 11: Not working as expected
	/// macOS X transparent works with winit out of the box, so this issue might be related to: <https://github.com/gfx-rs/wgpu/issues/687>
	/// Windows 11 is related to <https://github.com/rust-windowing/winit/issues/2082>