It is impossible to use RenderLayers to draw on top of UI

[nicopap]

Bevy version: main 1aeaafa (23rd of Dec 2022)

What you did

Using RenderLayers with two different cameras: One of top with the UiCameraConfig { show_ui: false } component, and one behind with an UI, I expect a UI to show up, with the viewport of the second camera overlayed on top.

What went wrong

It seems the UI doesn't show up when the top layer of a viewport has the UI disabled.

Expected

Actual

Minimal reproducible example

use bevy::{core_pipeline::clear_color::ClearColorConfig, prelude::*, render::view::RenderLayers};

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_startup_system(startup)
        .run();
}

fn startup(mut commands: Commands, asset_server: Res<AssetServer>) {
    commands.spawn(Camera2dBundle {
        camera_2d: Camera2d {
            clear_color: ClearColorConfig::Custom(Color::WHITE),
        },
        ..default()
    });
    commands.spawn((
        UiCameraConfig { show_ui: false },
        Camera2dBundle {
            camera_2d: Camera2d { clear_color: ClearColorConfig::None },
            camera: Camera { order: 1, ..default() },
            ..default()
        },
        RenderLayers::layer(1),
    ));

    commands.spawn(NodeBundle {
        style: Style {
            size: Size::new(Val::Percent(100.0), Val::Percent(50.0)),
            ..default()
        },
        background_color: BackgroundColor(Color::rgba(0.8, 0.0, 0.0, 0.8)),
        ..default()
    });

    commands.spawn((SpriteBundle {
        texture: asset_server.load("branding/icon.png"),
        transform: Transform::from_scale(Vec3::splat(2.0)),
        ..default()
    },));
    commands.spawn((
        SpriteBundle {
            texture: asset_server.load("branding/icon.png"),
            ..default()
        },
        RenderLayers::layer(1),
    ));
}

[irate-devil]

The camera priority should be -1 instead of 1.
nvm I can't read 🤔

[nicopap]

Duplicate, Same issue as:

• UI only shows if in last pass #5721