Support Warning
WebGPU is currently only supported on Chrome starting with version 113, and only on desktop. If they don't work on your configuration, you can check the WebGL2 examples
here.
Support for WebGPU in Bevy hasn't been released yet, this example has been compiled using the main branch.
use bevy::{
diagnostic::{Diagnostics, FrameTimeDiagnosticsPlugin},
prelude::*,
};
fn main() {
App::new()
.add_plugins(DefaultPlugins)
.add_plugin(FrameTimeDiagnosticsPlugin)
.add_systems(Startup, setup)
.add_systems(Update, (text_update_system, text_color_system))
.run();
}
#[derive(Component)]
struct FpsText;
#[derive(Component)]
struct ColorText;
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
commands.spawn(Camera2dBundle::default());
commands.spawn((
TextBundle::from_section(
"hello\nbevy!",
TextStyle {
font: asset_server.load("fonts/FiraSans-Bold.ttf"),
font_size: 100.0,
color: Color::WHITE,
},
) .with_text_alignment(TextAlignment::Center)
.with_style(Style {
position_type: PositionType::Absolute,
bottom: Val::Px(5.0),
right: Val::Px(15.0),
..default()
}),
ColorText,
));
commands.spawn((
TextBundle::from_sections([
TextSection::new(
"FPS: ",
TextStyle {
font: asset_server.load("fonts/FiraSans-Bold.ttf"),
font_size: 60.0,
color: Color::WHITE,
},
),
TextSection::from_style(TextStyle {
font: asset_server.load("fonts/FiraMono-Medium.ttf"),
font_size: 60.0,
color: Color::GOLD,
}),
]),
FpsText,
));
}
fn text_color_system(time: Res<Time>, mut query: Query<&mut Text, With<ColorText>>) {
for mut text in &mut query {
let seconds = time.elapsed_seconds();
text.sections[0].style.color = Color::Rgba {
red: (1.25 * seconds).sin() / 2.0 + 0.5,
green: (0.75 * seconds).sin() / 2.0 + 0.5,
blue: (0.50 * seconds).sin() / 2.0 + 0.5,
alpha: 1.0,
};
}
}
fn text_update_system(diagnostics: Res<Diagnostics>, mut query: Query<&mut Text, With<FpsText>>) {
for mut text in &mut query {
if let Some(fps) = diagnostics.get(FrameTimeDiagnosticsPlugin::FPS) {
if let Some(value) = fps.smoothed() {
text.sections[1].value = format!("{value:.2}");
}
}
}
}