mirror of
https://github.com/bevyengine/bevy
synced 2024-11-26 22:50:19 +00:00
704 lines
20 KiB
Rust
704 lines
20 KiB
Rust
//! This examples compares Tonemapping options
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use bevy::{
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core_pipeline::tonemapping::Tonemapping,
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math::vec2,
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pbr::CascadeShadowConfigBuilder,
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prelude::*,
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reflect::TypeUuid,
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render::{
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render_resource::{
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AsBindGroup, Extent3d, SamplerDescriptor, ShaderRef, TextureDimension, TextureFormat,
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},
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texture::ImageSampler,
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view::ColorGrading,
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},
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utils::HashMap,
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};
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use std::f32::consts::PI;
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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.add_plugin(MaterialPlugin::<ColorGradientMaterial>::default())
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.insert_resource(CameraTransform(
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Transform::from_xyz(0.7, 0.7, 1.0).looking_at(Vec3::new(0.0, 0.3, 0.0), Vec3::Y),
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))
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.init_resource::<PerMethodSettings>()
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.insert_resource(CurrentScene(1))
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.insert_resource(SelectedParameter { value: 0, max: 4 })
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.add_systems(
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Startup,
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(
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setup,
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setup_basic_scene,
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setup_color_gradient_scene,
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setup_image_viewer_scene,
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),
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)
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.add_systems(
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Update,
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(
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update_image_viewer,
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toggle_scene,
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toggle_tonemapping_method,
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update_color_grading_settings,
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update_ui,
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),
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)
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.run();
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}
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fn setup(
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mut commands: Commands,
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asset_server: Res<AssetServer>,
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camera_transform: Res<CameraTransform>,
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) {
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// camera
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commands.spawn((
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Camera3dBundle {
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camera: Camera {
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hdr: true,
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..default()
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},
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transform: camera_transform.0,
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..default()
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},
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EnvironmentMapLight {
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diffuse_map: asset_server.load("environment_maps/pisa_diffuse_rgb9e5_zstd.ktx2"),
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specular_map: asset_server.load("environment_maps/pisa_specular_rgb9e5_zstd.ktx2"),
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},
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));
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// ui
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commands.spawn(
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TextBundle::from_section(
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"",
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TextStyle {
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font: asset_server.load("fonts/FiraMono-Medium.ttf"),
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font_size: 18.0,
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color: Color::WHITE,
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},
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)
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.with_style(Style {
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position_type: PositionType::Absolute,
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top: Val::Px(10.0),
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left: Val::Px(10.0),
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..default()
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}),
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);
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}
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fn setup_basic_scene(
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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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mut images: ResMut<Assets<Image>>,
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asset_server: Res<AssetServer>,
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) {
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// plane
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commands.spawn((
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PbrBundle {
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mesh: meshes.add(Mesh::from(shape::Plane {
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size: 5.0,
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..default()
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})),
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material: materials.add(StandardMaterial {
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base_color: Color::rgb(0.3, 0.5, 0.3),
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perceptual_roughness: 0.5,
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..default()
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}),
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..default()
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},
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SceneNumber(1),
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));
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// cubes
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let cube_material = materials.add(StandardMaterial {
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base_color_texture: Some(images.add(uv_debug_texture())),
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..default()
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});
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let cube_mesh = meshes.add(Mesh::from(shape::Cube { size: 0.25 }));
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for i in 0..5 {
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commands.spawn((
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PbrBundle {
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mesh: cube_mesh.clone(),
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material: cube_material.clone(),
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transform: Transform::from_xyz(i as f32 * 0.25 - 1.0, 0.125, -i as f32 * 0.5),
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..default()
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},
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SceneNumber(1),
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));
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}
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// spheres
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for i in 0..6 {
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let j = i % 3;
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let s_val = if i < 3 { 0.0 } else { 0.2 };
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let material = if j == 0 {
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materials.add(StandardMaterial {
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base_color: Color::rgb(s_val, s_val, 1.0),
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perceptual_roughness: 0.089,
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metallic: 0.0,
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..default()
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})
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} else if j == 1 {
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materials.add(StandardMaterial {
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base_color: Color::rgb(s_val, 1.0, s_val),
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perceptual_roughness: 0.089,
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metallic: 0.0,
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..default()
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})
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} else {
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materials.add(StandardMaterial {
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base_color: Color::rgb(1.0, s_val, s_val),
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perceptual_roughness: 0.089,
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metallic: 0.0,
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..default()
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})
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};
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commands.spawn((
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PbrBundle {
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mesh: meshes.add(Mesh::from(shape::UVSphere {
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radius: 0.125,
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sectors: 128,
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stacks: 128,
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})),
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material,
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transform: Transform::from_xyz(
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j as f32 * 0.25 + if i < 3 { -0.15 } else { 0.15 } - 0.4,
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0.125,
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-j as f32 * 0.25 + if i < 3 { -0.15 } else { 0.15 } + 0.4,
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),
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..default()
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},
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SceneNumber(1),
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));
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}
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// Flight Helmet
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commands.spawn((
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SceneBundle {
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scene: asset_server.load("models/FlightHelmet/FlightHelmet.gltf#Scene0"),
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transform: Transform::from_xyz(0.5, 0.0, -0.5)
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.with_rotation(Quat::from_rotation_y(-0.15 * PI)),
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..default()
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},
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SceneNumber(1),
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));
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// light
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commands.spawn((
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DirectionalLightBundle {
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directional_light: DirectionalLight {
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shadows_enabled: true,
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illuminance: 50000.0,
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..default()
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},
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transform: Transform::from_rotation(Quat::from_euler(
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EulerRot::ZYX,
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0.0,
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PI * -0.15,
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PI * -0.15,
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)),
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cascade_shadow_config: CascadeShadowConfigBuilder {
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maximum_distance: 3.0,
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first_cascade_far_bound: 0.9,
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..default()
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}
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.into(),
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..default()
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},
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SceneNumber(1),
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));
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}
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fn setup_color_gradient_scene(
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mut commands: Commands,
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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<ColorGradientMaterial>>,
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camera_transform: Res<CameraTransform>,
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) {
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let mut transform = camera_transform.0;
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transform.translation += transform.forward();
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commands.spawn((
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MaterialMeshBundle {
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mesh: meshes.add(Mesh::from(shape::Quad {
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size: vec2(1.0, 1.0) * 0.7,
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flip: false,
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})),
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material: materials.add(ColorGradientMaterial {}),
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transform,
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visibility: Visibility::Hidden,
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..default()
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},
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SceneNumber(2),
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));
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}
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fn setup_image_viewer_scene(
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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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camera_transform: Res<CameraTransform>,
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asset_server: Res<AssetServer>,
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) {
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let mut transform = camera_transform.0;
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transform.translation += transform.forward();
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// exr/hdr viewer (exr requires enabling bevy feature)
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commands.spawn((
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PbrBundle {
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mesh: meshes.add(Mesh::from(shape::Quad {
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size: vec2(1.0, 1.0),
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flip: false,
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})),
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material: materials.add(StandardMaterial {
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base_color_texture: None,
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unlit: true,
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..default()
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}),
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transform,
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visibility: Visibility::Hidden,
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..default()
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},
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SceneNumber(3),
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HDRViewer,
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));
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commands
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.spawn((
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TextBundle::from_section(
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"Drag and drop an HDR or EXR file",
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TextStyle {
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font: asset_server.load("fonts/FiraMono-Medium.ttf"),
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font_size: 36.0,
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color: Color::BLACK,
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},
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)
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.with_text_alignment(TextAlignment::Center)
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.with_style(Style {
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align_self: AlignSelf::Center,
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margin: UiRect::all(Val::Auto),
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..default()
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}),
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SceneNumber(3),
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))
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.insert(Visibility::Hidden);
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}
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// ----------------------------------------------------------------------------
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#[allow(clippy::too_many_arguments)]
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fn update_image_viewer(
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image_mesh: Query<(&Handle<StandardMaterial>, &Handle<Mesh>), With<HDRViewer>>,
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text: Query<Entity, (With<Text>, With<SceneNumber>)>,
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mut materials: ResMut<Assets<StandardMaterial>>,
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mut meshes: ResMut<Assets<Mesh>>,
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images: Res<Assets<Image>>,
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mut drop_events: EventReader<FileDragAndDrop>,
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mut drop_hovered: Local<bool>,
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asset_server: Res<AssetServer>,
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mut image_events: EventReader<AssetEvent<Image>>,
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mut commands: Commands,
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) {
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let mut new_image: Option<Handle<Image>> = None;
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for event in drop_events.iter() {
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match event {
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FileDragAndDrop::DroppedFile { path_buf, .. } => {
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new_image = Some(asset_server.load(path_buf.to_string_lossy().to_string()));
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*drop_hovered = false;
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}
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FileDragAndDrop::HoveredFile { .. } => *drop_hovered = true,
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FileDragAndDrop::HoveredFileCancelled { .. } => *drop_hovered = false,
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}
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}
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for (mat_h, mesh_h) in &image_mesh {
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if let Some(mat) = materials.get_mut(mat_h) {
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if let Some(ref new_image) = new_image {
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mat.base_color_texture = Some(new_image.clone());
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if let Ok(text_entity) = text.get_single() {
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commands.entity(text_entity).despawn();
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}
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}
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for event in image_events.iter() {
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let image_changed_h = match event {
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AssetEvent::Created { handle } | AssetEvent::Modified { handle } => handle,
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_ => continue,
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};
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if let Some(base_color_texture) = mat.base_color_texture.clone() {
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if image_changed_h == &base_color_texture {
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if let Some(image_changed) = images.get(image_changed_h) {
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let size = image_changed.size().normalize_or_zero() * 1.4;
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// Resize Mesh
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let quad = Mesh::from(shape::Quad::new(size));
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let _ = meshes.set(mesh_h, quad);
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}
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}
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}
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}
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}
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}
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}
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fn toggle_scene(
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keys: Res<Input<KeyCode>>,
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mut query: Query<(&mut Visibility, &SceneNumber)>,
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mut current_scene: ResMut<CurrentScene>,
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) {
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let mut pressed = None;
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if keys.just_pressed(KeyCode::Q) {
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pressed = Some(1);
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} else if keys.just_pressed(KeyCode::W) {
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pressed = Some(2);
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} else if keys.just_pressed(KeyCode::E) {
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pressed = Some(3);
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}
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if let Some(pressed) = pressed {
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current_scene.0 = pressed;
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for (mut visibility, scene) in query.iter_mut() {
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if scene.0 == pressed {
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*visibility = Visibility::Visible;
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} else {
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*visibility = Visibility::Hidden;
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}
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}
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}
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}
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fn toggle_tonemapping_method(
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keys: Res<Input<KeyCode>>,
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mut tonemapping: Query<&mut Tonemapping>,
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mut color_grading: Query<&mut ColorGrading>,
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per_method_settings: Res<PerMethodSettings>,
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) {
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let mut method = tonemapping.single_mut();
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let mut color_grading = color_grading.single_mut();
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if keys.just_pressed(KeyCode::Key1) {
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*method = Tonemapping::None;
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} else if keys.just_pressed(KeyCode::Key2) {
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*method = Tonemapping::Reinhard;
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} else if keys.just_pressed(KeyCode::Key3) {
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*method = Tonemapping::ReinhardLuminance;
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} else if keys.just_pressed(KeyCode::Key4) {
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*method = Tonemapping::AcesFitted;
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} else if keys.just_pressed(KeyCode::Key5) {
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*method = Tonemapping::AgX;
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} else if keys.just_pressed(KeyCode::Key6) {
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*method = Tonemapping::SomewhatBoringDisplayTransform;
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} else if keys.just_pressed(KeyCode::Key7) {
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*method = Tonemapping::TonyMcMapface;
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} else if keys.just_pressed(KeyCode::Key8) {
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*method = Tonemapping::BlenderFilmic;
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}
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*color_grading = *per_method_settings.settings.get(&method).unwrap();
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}
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#[derive(Resource)]
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struct SelectedParameter {
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value: i32,
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max: i32,
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}
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impl SelectedParameter {
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fn next(&mut self) {
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self.value = (self.value + 1).rem_euclid(self.max);
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}
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fn prev(&mut self) {
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self.value = (self.value - 1).rem_euclid(self.max);
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}
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}
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fn update_color_grading_settings(
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keys: Res<Input<KeyCode>>,
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time: Res<Time>,
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mut per_method_settings: ResMut<PerMethodSettings>,
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tonemapping: Query<&Tonemapping>,
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current_scene: Res<CurrentScene>,
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mut selected_parameter: ResMut<SelectedParameter>,
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) {
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let method = tonemapping.single();
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let mut color_grading = per_method_settings.settings.get_mut(method).unwrap();
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let mut dt = time.delta_seconds() * 0.25;
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if keys.pressed(KeyCode::Left) {
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dt = -dt;
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}
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if keys.just_pressed(KeyCode::Down) {
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selected_parameter.next();
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}
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if keys.just_pressed(KeyCode::Up) {
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selected_parameter.prev();
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}
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if keys.pressed(KeyCode::Left) || keys.pressed(KeyCode::Right) {
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match selected_parameter.value {
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0 => {
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color_grading.exposure += dt;
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}
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1 => {
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color_grading.gamma += dt;
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}
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2 => {
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color_grading.pre_saturation += dt;
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}
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3 => {
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color_grading.post_saturation += dt;
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}
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_ => {}
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}
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}
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if keys.just_pressed(KeyCode::Space) {
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for (_, grading) in per_method_settings.settings.iter_mut() {
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*grading = ColorGrading::default();
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}
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}
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if keys.just_pressed(KeyCode::Return) && current_scene.0 == 1 {
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for (mapper, grading) in per_method_settings.settings.iter_mut() {
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*grading = PerMethodSettings::basic_scene_recommendation(*mapper);
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}
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}
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}
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fn update_ui(
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mut text: Query<&mut Text, Without<SceneNumber>>,
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settings: Query<(&Tonemapping, &ColorGrading)>,
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current_scene: Res<CurrentScene>,
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selected_parameter: Res<SelectedParameter>,
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mut hide_ui: Local<bool>,
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keys: Res<Input<KeyCode>>,
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) {
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let (method, color_grading) = settings.single();
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let method = *method;
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let mut text = text.single_mut();
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let text = &mut text.sections[0].value;
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if keys.just_pressed(KeyCode::H) {
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*hide_ui = !*hide_ui;
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}
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text.clear();
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if *hide_ui {
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return;
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}
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let scn = current_scene.0;
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text.push_str("(H) Hide UI\n\n");
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text.push_str("Test Scene: \n");
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text.push_str(&format!(
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"(Q) {} Basic Scene\n",
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if scn == 1 { ">" } else { "" }
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));
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text.push_str(&format!(
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"(W) {} Color Sweep\n",
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if scn == 2 { ">" } else { "" }
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));
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text.push_str(&format!(
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"(E) {} Image Viewer\n",
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if scn == 3 { ">" } else { "" }
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));
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text.push_str("\n\nTonemapping Method:\n");
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text.push_str(&format!(
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"(1) {} Disabled\n",
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if method == Tonemapping::None { ">" } else { "" }
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));
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text.push_str(&format!(
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"(2) {} Reinhard\n",
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if method == Tonemapping::Reinhard {
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"> "
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} else {
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""
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}
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));
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text.push_str(&format!(
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"(3) {} Reinhard Luminance\n",
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if method == Tonemapping::ReinhardLuminance {
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">"
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} else {
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""
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}
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));
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text.push_str(&format!(
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"(4) {} ACES Fitted\n",
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if method == Tonemapping::AcesFitted {
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">"
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} else {
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""
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}
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));
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text.push_str(&format!(
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"(5) {} AgX\n",
|
|
if method == Tonemapping::AgX { ">" } else { "" }
|
|
));
|
|
text.push_str(&format!(
|
|
"(6) {} SomewhatBoringDisplayTransform\n",
|
|
if method == Tonemapping::SomewhatBoringDisplayTransform {
|
|
">"
|
|
} else {
|
|
""
|
|
}
|
|
));
|
|
text.push_str(&format!(
|
|
"(7) {} TonyMcMapface\n",
|
|
if method == Tonemapping::TonyMcMapface {
|
|
">"
|
|
} else {
|
|
""
|
|
}
|
|
));
|
|
text.push_str(&format!(
|
|
"(8) {} Blender Filmic\n",
|
|
if method == Tonemapping::BlenderFilmic {
|
|
">"
|
|
} else {
|
|
""
|
|
}
|
|
));
|
|
|
|
text.push_str("\n\nColor Grading:\n");
|
|
text.push_str("(arrow keys)\n");
|
|
if selected_parameter.value == 0 {
|
|
text.push_str("> ");
|
|
}
|
|
text.push_str(&format!("Exposure: {}\n", color_grading.exposure));
|
|
if selected_parameter.value == 1 {
|
|
text.push_str("> ");
|
|
}
|
|
text.push_str(&format!("Gamma: {}\n", color_grading.gamma));
|
|
if selected_parameter.value == 2 {
|
|
text.push_str("> ");
|
|
}
|
|
text.push_str(&format!(
|
|
"PreSaturation: {}\n",
|
|
color_grading.pre_saturation
|
|
));
|
|
if selected_parameter.value == 3 {
|
|
text.push_str("> ");
|
|
}
|
|
text.push_str(&format!(
|
|
"PostSaturation: {}\n",
|
|
color_grading.post_saturation
|
|
));
|
|
text.push_str("(Space) Reset all to default\n");
|
|
|
|
if current_scene.0 == 1 {
|
|
text.push_str("(Enter) Reset all to scene recommendation\n");
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#[derive(Resource)]
|
|
struct PerMethodSettings {
|
|
settings: HashMap<Tonemapping, ColorGrading>,
|
|
}
|
|
|
|
impl PerMethodSettings {
|
|
fn basic_scene_recommendation(method: Tonemapping) -> ColorGrading {
|
|
match method {
|
|
Tonemapping::Reinhard | Tonemapping::ReinhardLuminance => ColorGrading {
|
|
exposure: 0.5,
|
|
..default()
|
|
},
|
|
Tonemapping::AcesFitted => ColorGrading {
|
|
exposure: 0.35,
|
|
..default()
|
|
},
|
|
Tonemapping::AgX => ColorGrading {
|
|
exposure: -0.2,
|
|
gamma: 1.0,
|
|
pre_saturation: 1.1,
|
|
post_saturation: 1.1,
|
|
},
|
|
_ => ColorGrading::default(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Default for PerMethodSettings {
|
|
fn default() -> Self {
|
|
let mut settings = HashMap::new();
|
|
|
|
for method in [
|
|
Tonemapping::None,
|
|
Tonemapping::Reinhard,
|
|
Tonemapping::ReinhardLuminance,
|
|
Tonemapping::AcesFitted,
|
|
Tonemapping::AgX,
|
|
Tonemapping::SomewhatBoringDisplayTransform,
|
|
Tonemapping::TonyMcMapface,
|
|
Tonemapping::BlenderFilmic,
|
|
] {
|
|
settings.insert(
|
|
method,
|
|
PerMethodSettings::basic_scene_recommendation(method),
|
|
);
|
|
}
|
|
|
|
Self { settings }
|
|
}
|
|
}
|
|
|
|
/// Creates a colorful test pattern
|
|
fn uv_debug_texture() -> Image {
|
|
const TEXTURE_SIZE: usize = 8;
|
|
|
|
let mut palette: [u8; 32] = [
|
|
255, 102, 159, 255, 255, 159, 102, 255, 236, 255, 102, 255, 121, 255, 102, 255, 102, 255,
|
|
198, 255, 102, 198, 255, 255, 121, 102, 255, 255, 236, 102, 255, 255,
|
|
];
|
|
|
|
let mut texture_data = [0; TEXTURE_SIZE * TEXTURE_SIZE * 4];
|
|
for y in 0..TEXTURE_SIZE {
|
|
let offset = TEXTURE_SIZE * y * 4;
|
|
texture_data[offset..(offset + TEXTURE_SIZE * 4)].copy_from_slice(&palette);
|
|
palette.rotate_right(4);
|
|
}
|
|
|
|
let mut img = Image::new_fill(
|
|
Extent3d {
|
|
width: TEXTURE_SIZE as u32,
|
|
height: TEXTURE_SIZE as u32,
|
|
depth_or_array_layers: 1,
|
|
},
|
|
TextureDimension::D2,
|
|
&texture_data,
|
|
TextureFormat::Rgba8UnormSrgb,
|
|
);
|
|
img.sampler_descriptor = ImageSampler::Descriptor(SamplerDescriptor::default());
|
|
img
|
|
}
|
|
|
|
impl Material for ColorGradientMaterial {
|
|
fn fragment_shader() -> ShaderRef {
|
|
"shaders/tonemapping_test_patterns.wgsl".into()
|
|
}
|
|
}
|
|
|
|
#[derive(AsBindGroup, Debug, Clone, TypeUuid)]
|
|
#[uuid = "117f64fe-6844-1822-8926-e3ed372291c8"]
|
|
pub struct ColorGradientMaterial {}
|
|
|
|
#[derive(Resource)]
|
|
struct CameraTransform(Transform);
|
|
|
|
#[derive(Resource)]
|
|
struct CurrentScene(u32);
|
|
|
|
#[derive(Component)]
|
|
struct SceneNumber(u32);
|
|
|
|
#[derive(Component)]
|
|
struct HDRViewer;
|