mirror of
https://github.com/bevyengine/bevy
synced 2024-11-22 12:43:34 +00:00
11b41206eb
This updates the `pipelined-rendering` branch to use the latest `bevy_ecs` from `main`. This accomplishes a couple of goals: 1. prepares for upcoming `custom-shaders` branch changes, which were what drove many of the recent bevy_ecs changes on `main` 2. prepares for the soon-to-happen merge of `pipelined-rendering` into `main`. By including bevy_ecs changes now, we make that merge simpler / easier to review. I split this up into 3 commits: 1. **add upstream bevy_ecs**: please don't bother reviewing this content. it has already received thorough review on `main` and is a literal copy/paste of the relevant folders (the old folders were deleted so the directories are literally exactly the same as `main`). 2. **support manual buffer application in stages**: this is used to enable the Extract step. we've already reviewed this once on the `pipelined-rendering` branch, but its worth looking at one more time in the new context of (1). 3. **support manual archetype updates in QueryState**: same situation as (2).
89 lines
2.9 KiB
Rust
89 lines
2.9 KiB
Rust
use bevy::{
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prelude::*,
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render::{
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camera::{Camera, VisibleEntities},
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mesh::shape,
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},
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};
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/// This example visualizes camera z-ordering by setting the material of rotating cubes to their
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/// distance from the camera
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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.add_startup_system(setup)
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.add_system(rotator_system)
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.add_system(camera_order_color_system)
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.run();
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}
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struct Rotator;
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/// rotates the parent, which will result in the child also rotating
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fn rotator_system(time: Res<Time>, mut query: Query<&mut Transform, With<Rotator>>) {
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for mut transform in query.iter_mut() {
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transform.rotation *= Quat::from_rotation_x(3.0 * time.delta_seconds());
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}
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}
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fn camera_order_color_system(
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mut materials: ResMut<Assets<StandardMaterial>>,
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camera_query: Query<&VisibleEntities, With<Camera>>,
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material_query: Query<&Handle<StandardMaterial>>,
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) {
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for visible_entities in camera_query.iter() {
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for visible_entity in visible_entities.iter() {
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if let Ok(material_handle) = material_query.get(visible_entity.entity) {
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let material = materials.get_mut(&*material_handle).unwrap();
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let value = 1.0 - (visible_entity.order.0.sqrt() - 10.0) / 7.0;
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material.base_color = Color::rgb(value, value, value);
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}
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}
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}
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}
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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 cube_handle = meshes.add(Mesh::from(shape::Cube { size: 2.0 }));
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// parent cube
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commands
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.spawn_bundle(PbrBundle {
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mesh: cube_handle.clone(),
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material: materials.add(StandardMaterial {
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unlit: true,
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..Default::default()
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}),
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transform: Transform::from_xyz(0.0, 0.0, 1.0),
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..Default::default()
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})
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.insert(Rotator)
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.with_children(|parent| {
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// child cubes
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parent.spawn_bundle(PbrBundle {
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mesh: cube_handle.clone(),
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material: materials.add(StandardMaterial {
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unlit: true,
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..Default::default()
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}),
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transform: Transform::from_xyz(0.0, 3.0, 0.0),
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..Default::default()
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});
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parent.spawn_bundle(PbrBundle {
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mesh: cube_handle,
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material: materials.add(StandardMaterial {
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unlit: true,
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..Default::default()
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}),
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transform: Transform::from_xyz(0.0, -3.0, 0.0),
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..Default::default()
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});
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});
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// camera
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commands.spawn_bundle(PerspectiveCameraBundle {
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transform: Transform::from_xyz(5.0, 10.0, 10.0).looking_at(Vec3::ZERO, Vec3::Y),
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..Default::default()
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});
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}
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