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85 lines
2.0 KiB
Rust
85 lines
2.0 KiB
Rust
use bevy::pbr::OpaqueRendererMethod;
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use bevy::prelude::*;
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use bevy::pbr::ExtendedMaterial;
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use bevy::pbr::MaterialExtension;
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use bevy::pbr::MaterialMeshBundle;
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use bevy::render::render_resource::*;
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type MyMat = ExtendedMaterial<StandardMaterial, MatExt>;
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fn main() {
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App::new()
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.add_plugins((
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DefaultPlugins.set(ImagePlugin::default_nearest()),
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MaterialPlugin::<MyMat>::default(),
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))
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.add_systems(Startup, setup)
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.add_systems(Update, rotate)
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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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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<MyMat>>,
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) {
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commands.spawn(MaterialMeshBundle {
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mesh: meshes.add(
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Mesh::try_from(shape::Box {
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..default()
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}).unwrap(),
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),
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transform: Transform::from_xyz(0.0, 0.5, 0.0),
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material: materials.add(ExtendedMaterial {
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base: StandardMaterial {
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base_color: Color::RED,
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opaque_render_method: OpaqueRendererMethod::Auto,
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alpha_mode: AlphaMode::Mask(0.5),
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..default()
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},
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extension: MatExt { cutoff: 0.5 },
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}),
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..default()
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});
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commands.spawn(PointLightBundle {
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point_light: PointLight {
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intensity: 10.0,
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..default()
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},
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transform: Transform::from_xyz(-1.0, 4.5, 4.0).looking_at(Vec3::ZERO, Vec3::Y),
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..default()
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});
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commands.spawn(Camera3dBundle {
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transform: Transform::from_xyz(-1.0, 1.5, 4.0).looking_at(Vec3::ZERO, Vec3::Y),
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..default()
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});
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}
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#[derive(Asset, AsBindGroup, Reflect, Debug, Clone)]
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struct MatExt {
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#[uniform(100)]
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cutoff: f32,
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}
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impl MaterialExtension for MatExt {
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fn fragment_shader() -> ShaderRef {
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"examples/shaders/dissolve.wgsl".into()
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}
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}
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fn rotate(
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mut query: Query<&mut Transform, With<Handle<Mesh>>>,
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time: Res<Time>,
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mut materials: ResMut<Assets<MyMat>>,
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) {
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query.iter_mut().for_each(|mut t| {
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t.rotate_local_y(time.delta_seconds() / 2.0);
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t.rotate_local_z(time.delta_seconds() / 2.0);
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t.rotate_local_x(time.delta_seconds() / 2.0);
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});
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materials.iter_mut().for_each(|(_id, m)| {
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m.extension.cutoff = time.elapsed_seconds().sin().abs();
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})
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} |