mirror of
https://github.com/bevyengine/bevy
synced 2024-11-26 06:30:19 +00:00
1f97717a3d
# Objective - Resolves #10853 ## Solution - ~~Changed the name of `Input` struct to `PressableInput`.~~ - Changed the name of `Input` struct to `ButtonInput`. ## Migration Guide - Breaking Change: Users need to rename `Input` to `ButtonInput` in their projects.
456 lines
15 KiB
Rust
456 lines
15 KiB
Rust
//! Demonstrates how shadow biases affect shadows in a 3d scene.
|
|
|
|
use std::f32::consts::PI;
|
|
|
|
use bevy::{input::mouse::MouseMotion, pbr::ShadowFilteringMethod, prelude::*};
|
|
|
|
fn main() {
|
|
App::new()
|
|
.add_plugins(DefaultPlugins)
|
|
.add_systems(Startup, setup)
|
|
.add_systems(
|
|
Update,
|
|
(
|
|
cycle_filter_methods,
|
|
adjust_light_position,
|
|
adjust_point_light_biases,
|
|
toggle_light,
|
|
adjust_directional_light_biases,
|
|
camera_controller,
|
|
),
|
|
)
|
|
.run();
|
|
}
|
|
|
|
#[derive(Component)]
|
|
struct Lights;
|
|
|
|
/// set up a 3D scene to test shadow biases and perspective projections
|
|
fn setup(
|
|
mut commands: Commands,
|
|
mut meshes: ResMut<Assets<Mesh>>,
|
|
mut materials: ResMut<Assets<StandardMaterial>>,
|
|
) {
|
|
let spawn_plane_depth = 300.0f32;
|
|
let spawn_height = 2.0;
|
|
let sphere_radius = 0.25;
|
|
|
|
let white_handle = materials.add(StandardMaterial {
|
|
base_color: Color::WHITE,
|
|
perceptual_roughness: 1.0,
|
|
..default()
|
|
});
|
|
let sphere_handle = meshes.add(
|
|
Mesh::try_from(shape::Icosphere {
|
|
radius: sphere_radius,
|
|
..default()
|
|
})
|
|
.unwrap(),
|
|
);
|
|
|
|
let light_transform = Transform::from_xyz(5.0, 5.0, 0.0).looking_at(Vec3::ZERO, Vec3::Y);
|
|
commands
|
|
.spawn((
|
|
SpatialBundle {
|
|
transform: light_transform,
|
|
..default()
|
|
},
|
|
Lights,
|
|
))
|
|
.with_children(|builder| {
|
|
builder.spawn(PointLightBundle {
|
|
point_light: PointLight {
|
|
intensity: 0.0,
|
|
range: spawn_plane_depth,
|
|
color: Color::WHITE,
|
|
shadow_depth_bias: 0.0,
|
|
shadow_normal_bias: 0.0,
|
|
shadows_enabled: true,
|
|
..default()
|
|
},
|
|
..default()
|
|
});
|
|
builder.spawn(DirectionalLightBundle {
|
|
directional_light: DirectionalLight {
|
|
illuminance: 100000.0,
|
|
shadow_depth_bias: 0.0,
|
|
shadow_normal_bias: 0.0,
|
|
shadows_enabled: true,
|
|
..default()
|
|
},
|
|
..default()
|
|
});
|
|
});
|
|
|
|
// camera
|
|
commands.spawn((
|
|
Camera3dBundle {
|
|
transform: Transform::from_xyz(-1.0, 1.0, 1.0)
|
|
.looking_at(Vec3::new(-1.0, 1.0, 0.0), Vec3::Y),
|
|
..default()
|
|
},
|
|
CameraController::default(),
|
|
ShadowFilteringMethod::Hardware2x2,
|
|
));
|
|
|
|
for z_i32 in (-spawn_plane_depth as i32..=0).step_by(2) {
|
|
commands.spawn(PbrBundle {
|
|
mesh: sphere_handle.clone(),
|
|
material: white_handle.clone(),
|
|
transform: Transform::from_xyz(
|
|
0.0,
|
|
if z_i32 % 4 == 0 {
|
|
spawn_height
|
|
} else {
|
|
sphere_radius
|
|
},
|
|
z_i32 as f32,
|
|
),
|
|
..default()
|
|
});
|
|
}
|
|
|
|
// ground plane
|
|
commands.spawn(PbrBundle {
|
|
mesh: meshes.add(shape::Plane::from_size(2.0 * spawn_plane_depth).into()),
|
|
material: white_handle,
|
|
..default()
|
|
});
|
|
|
|
let style = TextStyle {
|
|
font_size: 20.,
|
|
..default()
|
|
};
|
|
commands
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
position_type: PositionType::Absolute,
|
|
padding: UiRect::all(Val::Px(5.0)),
|
|
..default()
|
|
},
|
|
z_index: ZIndex::Global(i32::MAX),
|
|
background_color: Color::BLACK.with_a(0.75).into(),
|
|
..default()
|
|
})
|
|
.with_children(|c| {
|
|
c.spawn(TextBundle::from_sections([
|
|
TextSection::new("Controls:\n", style.clone()),
|
|
TextSection::new("WSAD - forward/back/strafe left/right\n", style.clone()),
|
|
TextSection::new("E / Q - up / down\n", style.clone()),
|
|
TextSection::new("R / Z - reset biases to default / zero\n", style.clone()),
|
|
TextSection::new(
|
|
"L - switch between directional and point lights [",
|
|
style.clone(),
|
|
),
|
|
TextSection::new("DirectionalLight", style.clone()),
|
|
TextSection::new("]\n", style.clone()),
|
|
TextSection::new(
|
|
"F - switch directional light filter methods [",
|
|
style.clone(),
|
|
),
|
|
TextSection::new("Hardware2x2", style.clone()),
|
|
TextSection::new("]\n", style.clone()),
|
|
TextSection::new("1/2 - change point light depth bias [", style.clone()),
|
|
TextSection::new("0.00", style.clone()),
|
|
TextSection::new("]\n", style.clone()),
|
|
TextSection::new("3/4 - change point light normal bias [", style.clone()),
|
|
TextSection::new("0.0", style.clone()),
|
|
TextSection::new("]\n", style.clone()),
|
|
TextSection::new("5/6 - change direction light depth bias [", style.clone()),
|
|
TextSection::new("0.00", style.clone()),
|
|
TextSection::new("]\n", style.clone()),
|
|
TextSection::new(
|
|
"7/8 - change direction light normal bias [",
|
|
style.clone(),
|
|
),
|
|
TextSection::new("0.0", style.clone()),
|
|
TextSection::new("]\n", style.clone()),
|
|
TextSection::new(
|
|
"left/right/up/down/pgup/pgdown - adjust light position (looking at 0,0,0) [",
|
|
style.clone(),
|
|
),
|
|
TextSection::new(
|
|
format!("{:.1},", light_transform.translation.x),
|
|
style.clone(),
|
|
),
|
|
TextSection::new(
|
|
format!(" {:.1},", light_transform.translation.y),
|
|
style.clone(),
|
|
),
|
|
TextSection::new(
|
|
format!(" {:.1}", light_transform.translation.z),
|
|
style.clone(),
|
|
),
|
|
TextSection::new("]\n", style.clone()),
|
|
]));
|
|
});
|
|
}
|
|
|
|
fn toggle_light(
|
|
input: Res<ButtonInput<KeyCode>>,
|
|
mut point_lights: Query<&mut PointLight>,
|
|
mut directional_lights: Query<&mut DirectionalLight>,
|
|
mut example_text: Query<&mut Text>,
|
|
) {
|
|
if input.just_pressed(KeyCode::L) {
|
|
for mut light in &mut point_lights {
|
|
light.intensity = if light.intensity == 0.0 {
|
|
example_text.single_mut().sections[5].value = "PointLight".to_string();
|
|
100000000.0
|
|
} else {
|
|
0.0
|
|
};
|
|
}
|
|
for mut light in &mut directional_lights {
|
|
light.illuminance = if light.illuminance == 0.0 {
|
|
example_text.single_mut().sections[5].value = "DirectionalLight".to_string();
|
|
100000.0
|
|
} else {
|
|
0.0
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
fn adjust_light_position(
|
|
input: Res<ButtonInput<KeyCode>>,
|
|
mut lights: Query<&mut Transform, With<Lights>>,
|
|
mut example_text: Query<&mut Text>,
|
|
) {
|
|
let mut offset = Vec3::ZERO;
|
|
if input.just_pressed(KeyCode::Left) {
|
|
offset.x -= 1.0;
|
|
}
|
|
if input.just_pressed(KeyCode::Right) {
|
|
offset.x += 1.0;
|
|
}
|
|
if input.just_pressed(KeyCode::Up) {
|
|
offset.z -= 1.0;
|
|
}
|
|
if input.just_pressed(KeyCode::Down) {
|
|
offset.z += 1.0;
|
|
}
|
|
if input.just_pressed(KeyCode::PageDown) {
|
|
offset.y -= 1.0;
|
|
}
|
|
if input.just_pressed(KeyCode::PageUp) {
|
|
offset.y += 1.0;
|
|
}
|
|
if offset != Vec3::ZERO {
|
|
let mut example_text = example_text.single_mut();
|
|
for mut light in &mut lights {
|
|
light.translation += offset;
|
|
light.look_at(Vec3::ZERO, Vec3::Y);
|
|
example_text.sections[23].value = format!("{:.1},", light.translation.x);
|
|
example_text.sections[24].value = format!(" {:.1},", light.translation.y);
|
|
example_text.sections[25].value = format!(" {:.1}", light.translation.z);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn cycle_filter_methods(
|
|
input: Res<ButtonInput<KeyCode>>,
|
|
mut filter_methods: Query<&mut ShadowFilteringMethod>,
|
|
mut example_text: Query<&mut Text>,
|
|
) {
|
|
if input.just_pressed(KeyCode::F) {
|
|
for mut filter_method in &mut filter_methods {
|
|
let filter_method_string;
|
|
*filter_method = match *filter_method {
|
|
ShadowFilteringMethod::Hardware2x2 => {
|
|
filter_method_string = "Castano13".to_string();
|
|
ShadowFilteringMethod::Castano13
|
|
}
|
|
ShadowFilteringMethod::Castano13 => {
|
|
filter_method_string = "Jimenez14".to_string();
|
|
ShadowFilteringMethod::Jimenez14
|
|
}
|
|
ShadowFilteringMethod::Jimenez14 => {
|
|
filter_method_string = "Hardware2x2".to_string();
|
|
ShadowFilteringMethod::Hardware2x2
|
|
}
|
|
};
|
|
example_text.single_mut().sections[8].value = filter_method_string;
|
|
}
|
|
}
|
|
}
|
|
|
|
fn adjust_point_light_biases(
|
|
input: Res<ButtonInput<KeyCode>>,
|
|
mut query: Query<&mut PointLight>,
|
|
mut example_text: Query<&mut Text>,
|
|
) {
|
|
let depth_bias_step_size = 0.01;
|
|
let normal_bias_step_size = 0.1;
|
|
for mut light in &mut query {
|
|
if input.just_pressed(KeyCode::Key1) {
|
|
light.shadow_depth_bias -= depth_bias_step_size;
|
|
}
|
|
if input.just_pressed(KeyCode::Key2) {
|
|
light.shadow_depth_bias += depth_bias_step_size;
|
|
}
|
|
if input.just_pressed(KeyCode::Key3) {
|
|
light.shadow_normal_bias -= normal_bias_step_size;
|
|
}
|
|
if input.just_pressed(KeyCode::Key4) {
|
|
light.shadow_normal_bias += normal_bias_step_size;
|
|
}
|
|
if input.just_pressed(KeyCode::R) {
|
|
light.shadow_depth_bias = PointLight::DEFAULT_SHADOW_DEPTH_BIAS;
|
|
light.shadow_normal_bias = PointLight::DEFAULT_SHADOW_NORMAL_BIAS;
|
|
}
|
|
if input.just_pressed(KeyCode::Z) {
|
|
light.shadow_depth_bias = 0.0;
|
|
light.shadow_normal_bias = 0.0;
|
|
}
|
|
|
|
example_text.single_mut().sections[11].value = format!("{:.2}", light.shadow_depth_bias);
|
|
example_text.single_mut().sections[14].value = format!("{:.1}", light.shadow_normal_bias);
|
|
}
|
|
}
|
|
|
|
fn adjust_directional_light_biases(
|
|
input: Res<ButtonInput<KeyCode>>,
|
|
mut query: Query<&mut DirectionalLight>,
|
|
mut example_text: Query<&mut Text>,
|
|
) {
|
|
let depth_bias_step_size = 0.01;
|
|
let normal_bias_step_size = 0.1;
|
|
for mut light in &mut query {
|
|
if input.just_pressed(KeyCode::Key5) {
|
|
light.shadow_depth_bias -= depth_bias_step_size;
|
|
}
|
|
if input.just_pressed(KeyCode::Key6) {
|
|
light.shadow_depth_bias += depth_bias_step_size;
|
|
}
|
|
if input.just_pressed(KeyCode::Key7) {
|
|
light.shadow_normal_bias -= normal_bias_step_size;
|
|
}
|
|
if input.just_pressed(KeyCode::Key8) {
|
|
light.shadow_normal_bias += normal_bias_step_size;
|
|
}
|
|
if input.just_pressed(KeyCode::R) {
|
|
light.shadow_depth_bias = DirectionalLight::DEFAULT_SHADOW_DEPTH_BIAS;
|
|
light.shadow_normal_bias = DirectionalLight::DEFAULT_SHADOW_NORMAL_BIAS;
|
|
}
|
|
if input.just_pressed(KeyCode::Z) {
|
|
light.shadow_depth_bias = 0.0;
|
|
light.shadow_normal_bias = 0.0;
|
|
}
|
|
|
|
example_text.single_mut().sections[17].value = format!("{:.2}", light.shadow_depth_bias);
|
|
example_text.single_mut().sections[20].value = format!("{:.1}", light.shadow_normal_bias);
|
|
}
|
|
}
|
|
|
|
#[derive(Component)]
|
|
struct CameraController {
|
|
pub enabled: bool,
|
|
pub sensitivity: f32,
|
|
pub key_forward: KeyCode,
|
|
pub key_back: KeyCode,
|
|
pub key_left: KeyCode,
|
|
pub key_right: KeyCode,
|
|
pub key_up: KeyCode,
|
|
pub key_down: KeyCode,
|
|
pub key_run: KeyCode,
|
|
pub walk_speed: f32,
|
|
pub run_speed: f32,
|
|
pub friction: f32,
|
|
pub pitch: f32,
|
|
pub yaw: f32,
|
|
pub velocity: Vec3,
|
|
}
|
|
|
|
impl Default for CameraController {
|
|
fn default() -> Self {
|
|
Self {
|
|
enabled: true,
|
|
sensitivity: 0.5,
|
|
key_forward: KeyCode::W,
|
|
key_back: KeyCode::S,
|
|
key_left: KeyCode::A,
|
|
key_right: KeyCode::D,
|
|
key_up: KeyCode::E,
|
|
key_down: KeyCode::Q,
|
|
key_run: KeyCode::ShiftLeft,
|
|
walk_speed: 10.0,
|
|
run_speed: 30.0,
|
|
friction: 0.5,
|
|
pitch: 0.0,
|
|
yaw: 0.0,
|
|
velocity: Vec3::ZERO,
|
|
}
|
|
}
|
|
}
|
|
|
|
fn camera_controller(
|
|
time: Res<Time>,
|
|
mut mouse_events: EventReader<MouseMotion>,
|
|
key_input: Res<ButtonInput<KeyCode>>,
|
|
mut query: Query<(&mut Transform, &mut CameraController), With<Camera>>,
|
|
) {
|
|
let dt = time.delta_seconds();
|
|
|
|
// Handle mouse input
|
|
let mut mouse_delta = Vec2::ZERO;
|
|
for mouse_event in mouse_events.read() {
|
|
mouse_delta += mouse_event.delta;
|
|
}
|
|
|
|
for (mut transform, mut options) in &mut query {
|
|
if !options.enabled {
|
|
continue;
|
|
}
|
|
|
|
// Handle key input
|
|
let mut axis_input = Vec3::ZERO;
|
|
if key_input.pressed(options.key_forward) {
|
|
axis_input.z += 1.0;
|
|
}
|
|
if key_input.pressed(options.key_back) {
|
|
axis_input.z -= 1.0;
|
|
}
|
|
if key_input.pressed(options.key_right) {
|
|
axis_input.x += 1.0;
|
|
}
|
|
if key_input.pressed(options.key_left) {
|
|
axis_input.x -= 1.0;
|
|
}
|
|
if key_input.pressed(options.key_up) {
|
|
axis_input.y += 1.0;
|
|
}
|
|
if key_input.pressed(options.key_down) {
|
|
axis_input.y -= 1.0;
|
|
}
|
|
|
|
// Apply movement update
|
|
if axis_input != Vec3::ZERO {
|
|
let max_speed = if key_input.pressed(options.key_run) {
|
|
options.run_speed
|
|
} else {
|
|
options.walk_speed
|
|
};
|
|
options.velocity = axis_input.normalize() * max_speed;
|
|
} else {
|
|
let friction = options.friction.clamp(0.0, 1.0);
|
|
options.velocity *= 1.0 - friction;
|
|
if options.velocity.length_squared() < 1e-6 {
|
|
options.velocity = Vec3::ZERO;
|
|
}
|
|
}
|
|
let forward = transform.forward();
|
|
let right = transform.right();
|
|
transform.translation += options.velocity.x * dt * right
|
|
+ options.velocity.y * dt * Vec3::Y
|
|
+ options.velocity.z * dt * forward;
|
|
|
|
if mouse_delta != Vec2::ZERO {
|
|
// Apply look update
|
|
options.pitch = (options.pitch - mouse_delta.y * 0.5 * options.sensitivity * dt)
|
|
.clamp(-PI / 2., PI / 2.);
|
|
options.yaw -= mouse_delta.x * options.sensitivity * dt;
|
|
transform.rotation = Quat::from_euler(EulerRot::ZYX, 0.0, options.yaw, options.pitch);
|
|
}
|
|
}
|
|
}
|