25b62f9577
# Objective Port bevy_ui to pipelined-rendering (see #2535 ) ## Solution I did some changes during the port: - [X] separate color from the texture asset (as suggested [here](https://discord.com/channels/691052431525675048/743663924229963868/874353914525413406)) - [X] ~give the vertex shader a per-instance buffer instead of per-vertex buffer~ (incompatible with batching) Remaining features to implement to reach parity with the old renderer: - [x] textures - [X] TextBundle I'd also like to add these features, but they need some design discussion: - [x] batching - [ ] separate opaque and transparent phases - [ ] multiple windows - [ ] texture atlases - [ ] (maybe) clipping
226 lines
10 KiB
Rust
226 lines
10 KiB
Rust
use bevy::{
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prelude::{App, AssetServer, BuildChildren, Commands, Rect, Res, Size},
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render2::color::Color,
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text2::{Text, TextStyle},
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ui2::{
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entity::ImageBundle,
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entity::UiCameraBundle,
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entity::{NodeBundle, TextBundle},
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AlignItems, JustifyContent, PositionType, Style, Val,
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},
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PipelinedDefaultPlugins,
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};
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/// This example illustrates the various features of Bevy UI.
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fn main() {
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App::new()
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.add_plugins(PipelinedDefaultPlugins)
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.add_startup_system(setup)
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.run();
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}
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fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
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// ui camera
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commands.spawn_bundle(UiCameraBundle::default());
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// root node
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commands
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.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
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justify_content: JustifyContent::SpaceBetween,
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..Default::default()
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},
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color: Color::NONE.into(),
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..Default::default()
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})
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.with_children(|parent| {
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// left vertical fill (border)
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parent
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.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Px(200.0), Val::Percent(100.0)),
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border: Rect::all(Val::Px(2.0)),
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..Default::default()
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},
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color: Color::rgb(0.65, 0.65, 0.65).into(),
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..Default::default()
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})
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.with_children(|parent| {
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// left vertical fill (content)
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parent
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.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
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align_items: AlignItems::FlexEnd,
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..Default::default()
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},
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color: Color::rgb(0.15, 0.15, 0.15).into(),
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..Default::default()
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})
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.with_children(|parent| {
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// text
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parent.spawn_bundle(TextBundle {
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style: Style {
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margin: Rect::all(Val::Px(5.0)),
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..Default::default()
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},
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text: Text::with_section(
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"Text Example",
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TextStyle {
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font: asset_server.load("fonts/FiraSans-Bold.ttf"),
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font_size: 30.0,
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color: Color::WHITE,
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},
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Default::default(),
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),
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..Default::default()
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});
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});
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});
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// right vertical fill
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parent.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Px(200.0), Val::Percent(100.0)),
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..Default::default()
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},
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color: Color::rgb(0.15, 0.15, 0.15).into(),
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..Default::default()
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});
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// absolute positioning
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parent
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.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Px(200.0), Val::Px(200.0)),
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position_type: PositionType::Absolute,
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position: Rect {
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left: Val::Px(210.0),
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bottom: Val::Px(10.0),
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..Default::default()
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},
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border: Rect::all(Val::Px(20.0)),
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..Default::default()
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},
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color: Color::rgb(0.4, 0.4, 1.0).into(),
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..Default::default()
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})
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.with_children(|parent| {
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parent.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
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..Default::default()
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},
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color: Color::rgb(0.8, 0.8, 1.0).into(),
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..Default::default()
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});
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});
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// render order test: reddest in the back, whitest in the front (flex center)
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parent
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.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
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position_type: PositionType::Absolute,
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align_items: AlignItems::Center,
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justify_content: JustifyContent::Center,
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..Default::default()
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},
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color: Color::NONE.into(),
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..Default::default()
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})
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.with_children(|parent| {
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parent
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.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Px(100.0), Val::Px(100.0)),
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..Default::default()
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},
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color: Color::rgb(1.0, 0.0, 0.0).into(),
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..Default::default()
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})
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.with_children(|parent| {
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parent.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Px(100.0), Val::Px(100.0)),
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position_type: PositionType::Absolute,
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position: Rect {
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left: Val::Px(20.0),
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bottom: Val::Px(20.0),
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..Default::default()
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},
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..Default::default()
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},
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color: Color::rgb(1.0, 0.3, 0.3).into(),
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..Default::default()
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});
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parent.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Px(100.0), Val::Px(100.0)),
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position_type: PositionType::Absolute,
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position: Rect {
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left: Val::Px(40.0),
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bottom: Val::Px(40.0),
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..Default::default()
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},
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..Default::default()
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},
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color: Color::rgb(1.0, 0.5, 0.5).into(),
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..Default::default()
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});
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parent.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Px(100.0), Val::Px(100.0)),
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position_type: PositionType::Absolute,
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position: Rect {
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left: Val::Px(60.0),
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bottom: Val::Px(60.0),
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..Default::default()
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},
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..Default::default()
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},
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color: Color::rgb(1.0, 0.7, 0.7).into(),
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..Default::default()
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});
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// alpha test
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parent.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Px(100.0), Val::Px(100.0)),
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position_type: PositionType::Absolute,
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position: Rect {
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left: Val::Px(80.0),
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bottom: Val::Px(80.0),
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..Default::default()
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},
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..Default::default()
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},
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color: Color::rgba(1.0, 0.9, 0.9, 0.4).into(),
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..Default::default()
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});
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});
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});
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// bevy logo (flex center)
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parent
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.spawn_bundle(NodeBundle {
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style: Style {
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size: Size::new(Val::Percent(100.0), Val::Percent(100.0)),
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position_type: PositionType::Absolute,
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justify_content: JustifyContent::Center,
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align_items: AlignItems::FlexEnd,
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..Default::default()
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},
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color: Color::NONE.into(),
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..Default::default()
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})
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.with_children(|parent| {
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// bevy logo (image)
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parent.spawn_bundle(ImageBundle {
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style: Style {
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size: Size::new(Val::Px(500.0), Val::Auto),
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..Default::default()
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},
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image: asset_server.load("branding/bevy_logo_dark_big.png").into(),
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..Default::default()
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});
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});
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});
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}
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