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https://github.com/bevyengine/bevy
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0166db33f7
# Objective #11431 and #11688 implemented meshing support for Bevy's new geometric primitives. The next step is to deprecate the shapes in `bevy_render::mesh::shape` and to later remove them completely for 0.14. ## Solution Deprecate the shapes and reduce code duplication by utilizing the primitive meshing API for the old shapes where possible. Note that some shapes have behavior that can't be exactly reproduced with the new primitives yet: - `Box` is more of an AABB with min/max extents - `Plane` supports a subdivision count - `Quad` has a `flipped` property These types have not been changed to utilize the new primitives yet. --- ## Changelog - Deprecated all shapes in `bevy_render::mesh::shape` - Changed all examples to use new primitives for meshing ## Migration Guide Bevy has previously used rendering-specific types like `UVSphere` and `Quad` for primitive mesh shapes. These have now been deprecated to use the geometric primitives newly introduced in version 0.13. Some examples: ```rust let before = meshes.add(shape::Box::new(5.0, 0.15, 5.0)); let after = meshes.add(Cuboid::new(5.0, 0.15, 5.0)); let before = meshes.add(shape::Quad::default()); let after = meshes.add(Rectangle::default()); let before = meshes.add(shape::Plane::from_size(5.0)); // The surface normal can now also be specified when using `new` let after = meshes.add(Plane3d::default().mesh().size(5.0, 5.0)); let before = meshes.add( Mesh::try_from(shape::Icosphere { radius: 0.5, subdivisions: 5, }) .unwrap(), ); let after = meshes.add(Sphere::new(0.5).mesh().ico(5).unwrap()); ```
94 lines
3 KiB
Rust
94 lines
3 KiB
Rust
//! Demonstrates using a custom extension to the `StandardMaterial` to modify the results of the builtin pbr shader.
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use bevy::{
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pbr::{ExtendedMaterial, MaterialExtension, OpaqueRendererMethod},
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prelude::*,
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render::render_resource::*,
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};
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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(MaterialPlugin::<
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ExtendedMaterial<StandardMaterial, MyExtension>,
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>::default())
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.add_systems(Startup, setup)
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.add_systems(Update, rotate_things)
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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<ExtendedMaterial<StandardMaterial, MyExtension>>>,
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) {
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// sphere
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commands.spawn(MaterialMeshBundle {
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mesh: meshes.add(Sphere::new(1.0)),
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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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// can be used in forward or deferred mode.
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opaque_render_method: OpaqueRendererMethod::Auto,
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// in deferred mode, only the PbrInput can be modified (uvs, color and other material properties),
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// in forward mode, the output can also be modified after lighting is applied.
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// see the fragment shader `extended_material.wgsl` for more info.
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// Note: to run in deferred mode, you must also add a `DeferredPrepass` component to the camera and either
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// change the above to `OpaqueRendererMethod::Deferred` or add the `DefaultOpaqueRendererMethod` resource.
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..Default::default()
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},
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extension: MyExtension { quantize_steps: 3 },
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}),
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..default()
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});
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// light
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commands.spawn((
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PointLightBundle {
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point_light: PointLight {
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intensity: 150_000.0,
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..default()
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},
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..default()
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},
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Rotate,
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));
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// camera
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commands.spawn(Camera3dBundle {
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transform: Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
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..default()
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});
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}
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#[derive(Component)]
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struct Rotate;
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fn rotate_things(mut q: Query<&mut Transform, With<Rotate>>, time: Res<Time>) {
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for mut t in q.iter_mut() {
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t.translation = Vec3::new(
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time.elapsed_seconds().sin(),
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0.5,
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time.elapsed_seconds().cos(),
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) * 4.0;
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}
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}
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#[derive(Asset, AsBindGroup, Reflect, Debug, Clone)]
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struct MyExtension {
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// We need to ensure that the bindings of the base material and the extension do not conflict,
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// so we start from binding slot 100, leaving slots 0-99 for the base material.
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#[uniform(100)]
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quantize_steps: u32,
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}
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impl MaterialExtension for MyExtension {
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fn fragment_shader() -> ShaderRef {
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"shaders/extended_material.wgsl".into()
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}
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fn deferred_fragment_shader() -> ShaderRef {
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"shaders/extended_material.wgsl".into()
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}
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}
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