25bfa80e60
# Objective Yet another PR for migrating stuff to required components. This time, cameras! ## Solution As per the [selected proposal](https://hackmd.io/tsYID4CGRiWxzsgawzxG_g#Combined-Proposal-1-Selected), deprecate `Camera2dBundle` and `Camera3dBundle` in favor of `Camera2d` and `Camera3d`. Adding a `Camera` without `Camera2d` or `Camera3d` now logs a warning, as suggested by Cart [on Discord](https://discord.com/channels/691052431525675048/1264881140007702558/1291506402832945273). I would personally like cameras to work a bit differently and be split into a few more components, to avoid some footguns and confusing semantics, but that is more controversial, and shouldn't block this core migration. ## Testing I ran a few 2D and 3D examples, and tried cameras with and without render graphs. --- ## Migration Guide `Camera2dBundle` and `Camera3dBundle` have been deprecated in favor of `Camera2d` and `Camera3d`. Inserting them will now also insert the other components required by them automatically.
76 lines
2.2 KiB
Rust
76 lines
2.2 KiB
Rust
//! A shader that samples a texture with view-independent UV coordinates.
|
|
|
|
use bevy::{
|
|
prelude::*,
|
|
reflect::TypePath,
|
|
render::render_resource::{AsBindGroup, ShaderRef},
|
|
};
|
|
|
|
/// This example uses a shader source file from the assets subdirectory
|
|
const SHADER_ASSET_PATH: &str = "shaders/custom_material_screenspace_texture.wgsl";
|
|
|
|
fn main() {
|
|
App::new()
|
|
.add_plugins((DefaultPlugins, MaterialPlugin::<CustomMaterial>::default()))
|
|
.add_systems(Startup, setup)
|
|
.add_systems(Update, rotate_camera)
|
|
.run();
|
|
}
|
|
|
|
#[derive(Component)]
|
|
struct MainCamera;
|
|
|
|
fn setup(
|
|
mut commands: Commands,
|
|
asset_server: Res<AssetServer>,
|
|
mut meshes: ResMut<Assets<Mesh>>,
|
|
mut custom_materials: ResMut<Assets<CustomMaterial>>,
|
|
mut standard_materials: ResMut<Assets<StandardMaterial>>,
|
|
) {
|
|
commands.spawn((
|
|
Mesh3d(meshes.add(Plane3d::default().mesh().size(5.0, 5.0))),
|
|
MeshMaterial3d(standard_materials.add(Color::srgb(0.3, 0.5, 0.3))),
|
|
));
|
|
commands.spawn((PointLight::default(), Transform::from_xyz(4.0, 8.0, 4.0)));
|
|
|
|
commands.spawn((
|
|
Mesh3d(meshes.add(Cuboid::default())),
|
|
MeshMaterial3d(custom_materials.add(CustomMaterial {
|
|
texture: asset_server.load(
|
|
"models/FlightHelmet/FlightHelmet_Materials_LensesMat_OcclusionRoughMetal.png",
|
|
),
|
|
})),
|
|
Transform::from_xyz(0.0, 0.5, 0.0),
|
|
));
|
|
|
|
// camera
|
|
commands.spawn((
|
|
Camera3d::default(),
|
|
Transform::from_xyz(4.0, 2.5, 4.0).looking_at(Vec3::ZERO, Vec3::Y),
|
|
MainCamera,
|
|
));
|
|
}
|
|
|
|
fn rotate_camera(mut camera: Query<&mut Transform, With<MainCamera>>, time: Res<Time>) {
|
|
let cam_transform = camera.single_mut().into_inner();
|
|
|
|
cam_transform.rotate_around(
|
|
Vec3::ZERO,
|
|
Quat::from_axis_angle(Vec3::Y, 45f32.to_radians() * time.delta_seconds()),
|
|
);
|
|
cam_transform.look_at(Vec3::ZERO, Vec3::Y);
|
|
}
|
|
|
|
#[derive(Asset, TypePath, AsBindGroup, Debug, Clone)]
|
|
struct CustomMaterial {
|
|
#[texture(0)]
|
|
#[sampler(1)]
|
|
texture: Handle<Image>,
|
|
}
|
|
|
|
impl Material for CustomMaterial {
|
|
fn fragment_shader() -> ShaderRef {
|
|
SHADER_ASSET_PATH.into()
|
|
}
|
|
}
|