fcd7c0fc3d
Rebased and finished version of https://github.com/bevyengine/bevy/pull/8407. Huge thanks to @GitGhillie for adjusting all the examples, and the many other people who helped write this PR (@superdump , @coreh , among others) :) Fixes https://github.com/bevyengine/bevy/issues/8369 --- ## Changelog - Added a `brightness` control to `Skybox`. - Added an `intensity` control to `EnvironmentMapLight`. - Added `ExposureSettings` and `PhysicalCameraParameters` for controlling exposure of 3D cameras. - Removed the baked-in `DirectionalLight` exposure Bevy previously hardcoded internally. ## Migration Guide - If using a `Skybox` or `EnvironmentMapLight`, use the new `brightness` and `intensity` controls to adjust their strength. - All 3D scene will now have different apparent brightnesses due to Bevy implementing proper exposure controls. You will have to adjust the intensity of your lights and/or your camera exposure via the new `ExposureSettings` component to compensate. --------- Co-authored-by: Robert Swain <robert.swain@gmail.com> Co-authored-by: GitGhillie <jillisnoordhoek@gmail.com> Co-authored-by: Marco Buono <thecoreh@gmail.com> Co-authored-by: vero <email@atlasdostal.com> Co-authored-by: atlas dostal <rodol@rivalrebels.com>
345 lines
12 KiB
Rust
345 lines
12 KiB
Rust
//! Demonstrates how shadow biases affect shadows in a 3d scene.
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#[path = "../helpers/camera_controller.rs"]
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mod camera_controller;
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use bevy::{pbr::ShadowFilteringMethod, prelude::*};
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use camera_controller::{CameraController, CameraControllerPlugin};
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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.add_plugins(CameraControllerPlugin)
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.add_systems(Startup, setup)
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.add_systems(
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Update,
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(
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cycle_filter_methods,
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adjust_light_position,
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adjust_point_light_biases,
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toggle_light,
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adjust_directional_light_biases,
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),
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)
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.run();
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}
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#[derive(Component)]
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struct Lights;
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/// set up a 3D scene to test shadow biases and perspective projections
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fn setup(
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mut commands: Commands,
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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<StandardMaterial>>,
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) {
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let spawn_plane_depth = 300.0f32;
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let spawn_height = 2.0;
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let sphere_radius = 0.25;
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let white_handle = materials.add(StandardMaterial {
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base_color: Color::WHITE,
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perceptual_roughness: 1.0,
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..default()
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});
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let sphere_handle = meshes.add(
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Mesh::try_from(shape::Icosphere {
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radius: sphere_radius,
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..default()
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})
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.unwrap(),
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);
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let light_transform = Transform::from_xyz(5.0, 5.0, 0.0).looking_at(Vec3::ZERO, Vec3::Y);
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commands
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.spawn((
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SpatialBundle {
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transform: light_transform,
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..default()
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},
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Lights,
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))
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.with_children(|builder| {
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builder.spawn(PointLightBundle {
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point_light: PointLight {
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intensity: 0.0,
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range: spawn_plane_depth,
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color: Color::WHITE,
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shadow_depth_bias: 0.0,
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shadow_normal_bias: 0.0,
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shadows_enabled: true,
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..default()
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},
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..default()
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});
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builder.spawn(DirectionalLightBundle {
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directional_light: DirectionalLight {
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illuminance: 1500.0,
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shadow_depth_bias: 0.0,
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shadow_normal_bias: 0.0,
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shadows_enabled: true,
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..default()
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},
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..default()
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});
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});
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// camera
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commands.spawn((
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Camera3dBundle {
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transform: Transform::from_xyz(-1.0, 1.0, 1.0)
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.looking_at(Vec3::new(-1.0, 1.0, 0.0), Vec3::Y),
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..default()
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},
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CameraController::default(),
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ShadowFilteringMethod::Hardware2x2,
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));
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for z_i32 in (-spawn_plane_depth as i32..=0).step_by(2) {
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commands.spawn(PbrBundle {
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mesh: sphere_handle.clone(),
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material: white_handle.clone(),
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transform: Transform::from_xyz(
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0.0,
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if z_i32 % 4 == 0 {
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spawn_height
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} else {
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sphere_radius
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},
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z_i32 as f32,
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),
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..default()
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});
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}
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// ground plane
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commands.spawn(PbrBundle {
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mesh: meshes.add(shape::Plane::from_size(2.0 * spawn_plane_depth)),
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material: white_handle,
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..default()
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});
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let style = TextStyle {
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font_size: 20.,
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..default()
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};
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commands
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.spawn(NodeBundle {
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style: Style {
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position_type: PositionType::Absolute,
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padding: UiRect::all(Val::Px(5.0)),
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..default()
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},
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z_index: ZIndex::Global(i32::MAX),
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background_color: Color::BLACK.with_a(0.75).into(),
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..default()
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})
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.with_children(|c| {
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c.spawn(TextBundle::from_sections([
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TextSection::new("Controls:\n", style.clone()),
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TextSection::new("R / Z - reset biases to default / zero\n", style.clone()),
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TextSection::new(
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"L - switch between directional and point lights [",
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style.clone(),
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),
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TextSection::new("DirectionalLight", style.clone()),
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TextSection::new("]\n", style.clone()),
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TextSection::new(
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"F - switch directional light filter methods [",
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style.clone(),
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),
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TextSection::new("Hardware2x2", style.clone()),
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TextSection::new("]\n", style.clone()),
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TextSection::new("1/2 - change point light depth bias [", style.clone()),
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TextSection::new("0.00", style.clone()),
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TextSection::new("]\n", style.clone()),
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TextSection::new("3/4 - change point light normal bias [", style.clone()),
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TextSection::new("0.0", style.clone()),
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TextSection::new("]\n", style.clone()),
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TextSection::new("5/6 - change direction light depth bias [", style.clone()),
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TextSection::new("0.00", style.clone()),
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TextSection::new("]\n", style.clone()),
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TextSection::new(
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"7/8 - change direction light normal bias [",
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style.clone(),
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),
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TextSection::new("0.0", style.clone()),
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TextSection::new("]\n", style.clone()),
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TextSection::new(
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"left/right/up/down/pgup/pgdown - adjust light position (looking at 0,0,0) [",
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style.clone(),
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),
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TextSection::new(
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format!("{:.1},", light_transform.translation.x),
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style.clone(),
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),
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TextSection::new(
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format!(" {:.1},", light_transform.translation.y),
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style.clone(),
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),
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TextSection::new(
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format!(" {:.1}", light_transform.translation.z),
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style.clone(),
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),
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TextSection::new("]\n", style.clone()),
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]));
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});
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}
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fn toggle_light(
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input: Res<ButtonInput<KeyCode>>,
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mut point_lights: Query<&mut PointLight>,
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mut directional_lights: Query<&mut DirectionalLight>,
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mut example_text: Query<&mut Text>,
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) {
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if input.just_pressed(KeyCode::KeyL) {
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for mut light in &mut point_lights {
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light.intensity = if light.intensity == 0.0 {
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example_text.single_mut().sections[3].value = "PointLight".to_string();
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100000000.0
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} else {
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0.0
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};
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}
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for mut light in &mut directional_lights {
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light.illuminance = if light.illuminance == 0.0 {
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example_text.single_mut().sections[3].value = "DirectionalLight".to_string();
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100000.0
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} else {
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0.0
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};
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}
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}
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}
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fn adjust_light_position(
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input: Res<ButtonInput<KeyCode>>,
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mut lights: Query<&mut Transform, With<Lights>>,
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mut example_text: Query<&mut Text>,
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) {
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let mut offset = Vec3::ZERO;
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if input.just_pressed(KeyCode::ArrowLeft) {
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offset.x -= 1.0;
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}
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if input.just_pressed(KeyCode::ArrowRight) {
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offset.x += 1.0;
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}
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if input.just_pressed(KeyCode::ArrowUp) {
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offset.z -= 1.0;
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}
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if input.just_pressed(KeyCode::ArrowDown) {
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offset.z += 1.0;
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}
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if input.just_pressed(KeyCode::PageDown) {
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offset.y -= 1.0;
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}
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if input.just_pressed(KeyCode::PageUp) {
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offset.y += 1.0;
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}
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if offset != Vec3::ZERO {
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let mut example_text = example_text.single_mut();
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for mut light in &mut lights {
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light.translation += offset;
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light.look_at(Vec3::ZERO, Vec3::Y);
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example_text.sections[21].value = format!("{:.1},", light.translation.x);
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example_text.sections[22].value = format!(" {:.1},", light.translation.y);
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example_text.sections[23].value = format!(" {:.1}", light.translation.z);
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}
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}
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}
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fn cycle_filter_methods(
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input: Res<ButtonInput<KeyCode>>,
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mut filter_methods: Query<&mut ShadowFilteringMethod>,
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mut example_text: Query<&mut Text>,
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) {
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if input.just_pressed(KeyCode::KeyF) {
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for mut filter_method in &mut filter_methods {
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let filter_method_string;
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*filter_method = match *filter_method {
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ShadowFilteringMethod::Hardware2x2 => {
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filter_method_string = "Castano13".to_string();
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ShadowFilteringMethod::Castano13
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}
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ShadowFilteringMethod::Castano13 => {
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filter_method_string = "Jimenez14".to_string();
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ShadowFilteringMethod::Jimenez14
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}
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ShadowFilteringMethod::Jimenez14 => {
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filter_method_string = "Hardware2x2".to_string();
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ShadowFilteringMethod::Hardware2x2
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}
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};
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example_text.single_mut().sections[6].value = filter_method_string;
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}
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}
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}
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fn adjust_point_light_biases(
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input: Res<ButtonInput<KeyCode>>,
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mut query: Query<&mut PointLight>,
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mut example_text: Query<&mut Text>,
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) {
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let depth_bias_step_size = 0.01;
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let normal_bias_step_size = 0.1;
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for mut light in &mut query {
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if input.just_pressed(KeyCode::Digit1) {
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light.shadow_depth_bias -= depth_bias_step_size;
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}
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if input.just_pressed(KeyCode::Digit2) {
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light.shadow_depth_bias += depth_bias_step_size;
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}
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if input.just_pressed(KeyCode::Digit3) {
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light.shadow_normal_bias -= normal_bias_step_size;
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}
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if input.just_pressed(KeyCode::Digit4) {
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light.shadow_normal_bias += normal_bias_step_size;
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}
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if input.just_pressed(KeyCode::KeyR) {
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light.shadow_depth_bias = PointLight::DEFAULT_SHADOW_DEPTH_BIAS;
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light.shadow_normal_bias = PointLight::DEFAULT_SHADOW_NORMAL_BIAS;
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}
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if input.just_pressed(KeyCode::KeyZ) {
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light.shadow_depth_bias = 0.0;
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light.shadow_normal_bias = 0.0;
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}
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example_text.single_mut().sections[9].value = format!("{:.2}", light.shadow_depth_bias);
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example_text.single_mut().sections[12].value = format!("{:.1}", light.shadow_normal_bias);
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}
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}
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fn adjust_directional_light_biases(
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input: Res<ButtonInput<KeyCode>>,
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mut query: Query<&mut DirectionalLight>,
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mut example_text: Query<&mut Text>,
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) {
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let depth_bias_step_size = 0.01;
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let normal_bias_step_size = 0.1;
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for mut light in &mut query {
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if input.just_pressed(KeyCode::Digit5) {
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light.shadow_depth_bias -= depth_bias_step_size;
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}
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if input.just_pressed(KeyCode::Digit6) {
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light.shadow_depth_bias += depth_bias_step_size;
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}
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if input.just_pressed(KeyCode::Digit7) {
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light.shadow_normal_bias -= normal_bias_step_size;
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}
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if input.just_pressed(KeyCode::Digit8) {
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light.shadow_normal_bias += normal_bias_step_size;
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}
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if input.just_pressed(KeyCode::KeyR) {
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light.shadow_depth_bias = DirectionalLight::DEFAULT_SHADOW_DEPTH_BIAS;
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light.shadow_normal_bias = DirectionalLight::DEFAULT_SHADOW_NORMAL_BIAS;
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}
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if input.just_pressed(KeyCode::KeyZ) {
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light.shadow_depth_bias = 0.0;
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light.shadow_normal_bias = 0.0;
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}
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example_text.single_mut().sections[15].value = format!("{:.2}", light.shadow_depth_bias);
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example_text.single_mut().sections[18].value = format!("{:.1}", light.shadow_normal_bias);
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}
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}
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