custom
44 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
ickshonpe
|
300fe4db4d
|
Store UI render target info locally per node (#17579)
# Objective It's difficult to understand or make changes to the UI systems because of how each system needs to individually track changes to scale factor, windows and camera targets in local hashmaps, particularly for new contributors. Any major change inevitably introduces new scale factor bugs. Instead of per-system resolution we can resolve the camera target info for all UI nodes in a system at the start of `PostUpdate` and then store it per-node in components that can be queried with change detection. Fixes #17578 Fixes #15143 ## Solution Store the UI render target's data locally per node in a component that is updated in `PostUpdate` before any other UI systems run. This component can be then be queried with change detection so that UI systems no longer need to have knowledge of cameras and windows and don't require fragile custom change detection solutions using local hashmaps. ## Showcase Compare `measure_text_system` from main (which has a bug the causes it to use the wrong scale factor when a node's camera target changes): ``` pub fn measure_text_system( mut scale_factors_buffer: Local<EntityHashMap<f32>>, mut last_scale_factors: Local<EntityHashMap<f32>>, fonts: Res<Assets<Font>>, camera_query: Query<(Entity, &Camera)>, default_ui_camera: DefaultUiCamera, ui_scale: Res<UiScale>, mut text_query: Query< ( Entity, Ref<TextLayout>, &mut ContentSize, &mut TextNodeFlags, &mut ComputedTextBlock, Option<&UiTargetCamera>, ), With<Node>, >, mut text_reader: TextUiReader, mut text_pipeline: ResMut<TextPipeline>, mut font_system: ResMut<CosmicFontSystem>, ) { scale_factors_buffer.clear(); let default_camera_entity = default_ui_camera.get(); for (entity, block, content_size, text_flags, computed, maybe_camera) in &mut text_query { let Some(camera_entity) = maybe_camera .map(UiTargetCamera::entity) .or(default_camera_entity) else { continue; }; let scale_factor = match scale_factors_buffer.entry(camera_entity) { Entry::Occupied(entry) => *entry.get(), Entry::Vacant(entry) => *entry.insert( camera_query .get(camera_entity) .ok() .and_then(|(_, c)| c.target_scaling_factor()) .unwrap_or(1.0) * ui_scale.0, ), }; if last_scale_factors.get(&camera_entity) != Some(&scale_factor) || computed.needs_rerender() || text_flags.needs_measure_fn || content_size.is_added() { create_text_measure( entity, &fonts, scale_factor.into(), text_reader.iter(entity), block, &mut text_pipeline, content_size, text_flags, computed, &mut font_system, ); } } core::mem::swap(&mut *last_scale_factors, &mut *scale_factors_buffer); } ``` with `measure_text_system` from this PR (which always uses the correct scale factor): ``` pub fn measure_text_system( fonts: Res<Assets<Font>>, mut text_query: Query< ( Entity, Ref<TextLayout>, &mut ContentSize, &mut TextNodeFlags, &mut ComputedTextBlock, Ref<ComputedNodeTarget>, ), With<Node>, >, mut text_reader: TextUiReader, mut text_pipeline: ResMut<TextPipeline>, mut font_system: ResMut<CosmicFontSystem>, ) { for (entity, block, content_size, text_flags, computed, computed_target) in &mut text_query { // Note: the ComputedTextBlock::needs_rerender bool is cleared in create_text_measure(). if computed_target.is_changed() || computed.needs_rerender() || text_flags.needs_measure_fn || content_size.is_added() { create_text_measure( entity, &fonts, computed_target.scale_factor.into(), text_reader.iter(entity), block, &mut text_pipeline, content_size, text_flags, computed, &mut font_system, ); } } } ``` ## Testing I removed an alarming number of tests from the `layout` module but they were mostly to do with the deleted camera synchronisation logic. The remaining tests should all pass now. The most relevant examples are `multiple_windows` and `split_screen`, the behaviour of both should be unchanged from main. --------- Co-authored-by: UkoeHB <37489173+UkoeHB@users.noreply.github.com> Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> |
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ickshonpe
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adc33b5108
|
Rename TargetCamera to UiTargetCamera (#17403)
# Objective It's not immediately obvious that `TargetCamera` only works with UI node entities. It's natural to assume from looking at something like the `multiple_windows` example that it will work with everything. ## Solution Rename `TargetCamera` to `UiTargetCamera`. ## Migration Guide `TargetCamera` has been renamed to `UiTargetCamera`. |
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Carter Anderson
|
21f1e3045c
|
Relationships (non-fragmenting, one-to-many) (#17398)
This adds support for one-to-many non-fragmenting relationships (with planned paths for fragmenting and non-fragmenting many-to-many relationships). "Non-fragmenting" means that entities with the same relationship type, but different relationship targets, are not forced into separate tables (which would cause "table fragmentation"). Functionally, this fills a similar niche as the current Parent/Children system. The biggest differences are: 1. Relationships have simpler internals and significantly improved performance and UX. Commands and specialized APIs are no longer necessary to keep everything in sync. Just spawn entities with the relationship components you want and everything "just works". 2. Relationships are generalized. Bevy can provide additional built in relationships, and users can define their own. **REQUEST TO REVIEWERS**: _please don't leave top level comments and instead comment on specific lines of code. That way we can take advantage of threaded discussions. Also dont leave comments simply pointing out CI failures as I can read those just fine._ ## Built on top of what we have Relationships are implemented on top of the Bevy ECS features we already have: components, immutability, and hooks. This makes them immediately compatible with all of our existing (and future) APIs for querying, spawning, removing, scenes, reflection, etc. The fewer specialized APIs we need to build, maintain, and teach, the better. ## Why focus on one-to-many non-fragmenting first? 1. This allows us to improve Parent/Children relationships immediately, in a way that is reasonably uncontroversial. Switching our hierarchy to fragmenting relationships would have significant performance implications. ~~Flecs is heavily considering a switch to non-fragmenting relations after careful considerations of the performance tradeoffs.~~ _(Correction from @SanderMertens: Flecs is implementing non-fragmenting storage specialized for asset hierarchies, where asset hierarchies are many instances of small trees that have a well defined structure)_ 2. Adding generalized one-to-many relationships is currently a priority for the [Next Generation Scene / UI effort](https://github.com/bevyengine/bevy/discussions/14437). Specifically, we're interested in building reactions and observers on top. ## The changes This PR does the following: 1. Adds a generic one-to-many Relationship system 3. Ports the existing Parent/Children system to Relationships, which now lives in `bevy_ecs::hierarchy`. The old `bevy_hierarchy` crate has been removed. 4. Adds on_despawn component hooks 5. Relationships can opt-in to "despawn descendants" behavior, meaning that the entire relationship hierarchy is despawned when `entity.despawn()` is called. The built in Parent/Children hierarchies enable this behavior, and `entity.despawn_recursive()` has been removed. 6. `world.spawn` now applies commands after spawning. This ensures that relationship bookkeeping happens immediately and removes the need to manually flush. This is in line with the equivalent behaviors recently added to the other APIs (ex: insert). 7. Removes the ValidParentCheckPlugin (system-driven / poll based) in favor of a `validate_parent_has_component` hook. ## Using Relationships The `Relationship` trait looks like this: ```rust pub trait Relationship: Component + Sized { type RelationshipSources: RelationshipSources<Relationship = Self>; fn get(&self) -> Entity; fn from(entity: Entity) -> Self; } ``` A relationship is a component that: 1. Is a simple wrapper over a "target" Entity. 2. Has a corresponding `RelationshipSources` component, which is a simple wrapper over a collection of entities. Every "target entity" targeted by a "source entity" with a `Relationship` has a `RelationshipSources` component, which contains every "source entity" that targets it. For example, the `Parent` component (as it currently exists in Bevy) is the `Relationship` component and the entity containing the Parent is the "source entity". The entity _inside_ the `Parent(Entity)` component is the "target entity". And that target entity has a `Children` component (which implements `RelationshipSources`). In practice, the Parent/Children relationship looks like this: ```rust #[derive(Relationship)] #[relationship(relationship_sources = Children)] pub struct Parent(pub Entity); #[derive(RelationshipSources)] #[relationship_sources(relationship = Parent)] pub struct Children(Vec<Entity>); ``` The Relationship and RelationshipSources derives automatically implement Component with the relevant configuration (namely, the hooks necessary to keep everything in sync). The most direct way to add relationships is to spawn entities with relationship components: ```rust let a = world.spawn_empty().id(); let b = world.spawn(Parent(a)).id(); assert_eq!(world.entity(a).get::<Children>().unwrap(), &[b]); ``` There are also convenience APIs for spawning more than one entity with the same relationship: ```rust world.spawn_empty().with_related::<Children>(|s| { s.spawn_empty(); s.spawn_empty(); }) ``` The existing `with_children` API is now a simpler wrapper over `with_related`. This makes this change largely non-breaking for existing spawn patterns. ```rust world.spawn_empty().with_children(|s| { s.spawn_empty(); s.spawn_empty(); }) ``` There are also other relationship APIs, such as `add_related` and `despawn_related`. ## Automatic recursive despawn via the new on_despawn hook `RelationshipSources` can opt-in to "despawn descendants" behavior, which will despawn all related entities in the relationship hierarchy: ```rust #[derive(RelationshipSources)] #[relationship_sources(relationship = Parent, despawn_descendants)] pub struct Children(Vec<Entity>); ``` This means that `entity.despawn_recursive()` is no longer required. Instead, just use `entity.despawn()` and the relevant related entities will also be despawned. To despawn an entity _without_ despawning its parent/child descendants, you should remove the `Children` component first, which will also remove the related `Parent` components: ```rust entity .remove::<Children>() .despawn() ``` This builds on the on_despawn hook introduced in this PR, which is fired when an entity is despawned (before other hooks). ## Relationships are the source of truth `Relationship` is the _single_ source of truth component. `RelationshipSources` is merely a reflection of what all the `Relationship` components say. By embracing this, we are able to significantly improve the performance of the system as a whole. We can rely on component lifecycles to protect us against duplicates, rather than needing to scan at runtime to ensure entities don't already exist (which results in quadratic runtime). A single source of truth gives us constant-time inserts. This does mean that we cannot directly spawn populated `Children` components (or directly add or remove entities from those components). I personally think this is a worthwhile tradeoff, both because it makes the performance much better _and_ because it means theres exactly one way to do things (which is a philosophy we try to employ for Bevy APIs). As an aside: treating both sides of the relationship as "equivalent source of truth relations" does enable building simple and flexible many-to-many relationships. But this introduces an _inherent_ need to scan (or hash) to protect against duplicates. [`evergreen_relations`](https://github.com/EvergreenNest/evergreen_relations) has a very nice implementation of the "symmetrical many-to-many" approach. Unfortunately I think the performance issues inherent to that approach make it a poor choice for Bevy's default relationship system. ## Followup Work * Discuss renaming `Parent` to `ChildOf`. I refrained from doing that in this PR to keep the diff reasonable, but I'm personally biased toward this change (and using that naming pattern generally for relationships). * [Improved spawning ergonomics](https://github.com/bevyengine/bevy/discussions/16920) * Consider adding relationship observers/triggers for "relationship targets" whenever a source is added or removed. This would replace the current "hierarchy events" system, which is unused upstream but may have existing users downstream. I think triggers are the better fit for this than a buffered event queue, and would prefer not to add that back. * Fragmenting relations: My current idea hinges on the introduction of "value components" (aka: components whose type _and_ value determines their ComponentId, via something like Hashing / PartialEq). By labeling a Relationship component such as `ChildOf(Entity)` as a "value component", `ChildOf(e1)` and `ChildOf(e2)` would be considered "different components". This makes the transition between fragmenting and non-fragmenting a single flag, and everything else continues to work as expected. * Many-to-many support * Non-fragmenting: We can expand Relationship to be a list of entities instead of a single entity. I have largely already written the code for this. * Fragmenting: With the "value component" impl mentioned above, we get many-to-many support "for free", as it would allow inserting multiple copies of a Relationship component with different target entities. Fixes #3742 (If this PR is merged, I think we should open more targeted followup issues for the work above, with a fresh tracking issue free of the large amount of less-directed historical context) Fixes #17301 Fixes #12235 Fixes #15299 Fixes #15308 ## Migration Guide * Replace `ChildBuilder` with `ChildSpawnerCommands`. * Replace calls to `.set_parent(parent_id)` with `.insert(Parent(parent_id))`. * Replace calls to `.replace_children()` with `.remove::<Children>()` followed by `.add_children()`. Note that you'll need to manually despawn any children that are not carried over. * Replace calls to `.despawn_recursive()` with `.despawn()`. * Replace calls to `.despawn_descendants()` with `.despawn_related::<Children>()`. * If you have any calls to `.despawn()` which depend on the children being preserved, you'll need to remove the `Children` component first. --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> |
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MichiRecRoom
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8e51b326b5
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Cleanup instances of #[allow(clippy::type_complexity)] (#17248)
# Objective I never realized `clippy::type_complexity` was an allowed lint - I've been assuming it'd generate a warning when performing my linting PRs. ## Solution Removes any instances of `#[allow(clippy::type_complexity)]` and `#[expect(clippy::type_complexity)]` ## Testing `cargo clippy` ran without errors or warnings. |
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Carter Anderson
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015f2c69ca
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Merge Style properties into Node. Use ComputedNode for computed properties. (#15975)
# Objective Continue improving the user experience of our UI Node API in the direction specified by [Bevy's Next Generation Scene / UI System](https://github.com/bevyengine/bevy/discussions/14437) ## Solution As specified in the document above, merge `Style` fields into `Node`, and move "computed Node fields" into `ComputedNode` (I chose this name over something like `ComputedNodeLayout` because it currently contains more than just layout info. If we want to break this up / rename these concepts, lets do that in a separate PR). `Style` has been removed. This accomplishes a number of goals: ## Ergonomics wins Specifying both `Node` and `Style` is now no longer required for non-default styles Before: ```rust commands.spawn(( Node::default(), Style { width: Val::Px(100.), ..default() }, )); ``` After: ```rust commands.spawn(Node { width: Val::Px(100.), ..default() }); ``` ## Conceptual clarity `Style` was never a comprehensive "style sheet". It only defined "core" style properties that all `Nodes` shared. Any "styled property" that couldn't fit that mold had to be in a separate component. A "real" style system would style properties _across_ components (`Node`, `Button`, etc). We have plans to build a true style system (see the doc linked above). By moving the `Style` fields to `Node`, we fully embrace `Node` as the driving concept and remove the "style system" confusion. ## Next Steps * Consider identifying and splitting out "style properties that aren't core to Node". This should not happen for Bevy 0.15. --- ## Migration Guide Move any fields set on `Style` into `Node` and replace all `Style` component usage with `Node`. Before: ```rust commands.spawn(( Node::default(), Style { width: Val::Px(100.), ..default() }, )); ``` After: ```rust commands.spawn(Node { width: Val::Px(100.), ..default() }); ``` For any usage of the "computed node properties" that used to live on `Node`, use `ComputedNode` instead: Before: ```rust fn system(nodes: Query<&Node>) { for node in &nodes { let computed_size = node.size(); } } ``` After: ```rust fn system(computed_nodes: Query<&ComputedNode>) { for computed_node in &computed_nodes { let computed_size = computed_node.size(); } } ``` |
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VitalyR
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eb19a9ea0b
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Migrate UI bundles to required components (#15898)
# Objective - Migrate UI bundles to required components, fixes #15889 ## Solution - deprecate `NodeBundle` in favor of `Node` - deprecate `ImageBundle` in favor of `UiImage` - deprecate `ButtonBundle` in favor of `Button` ## Testing CI. ## Migration Guide - Replace all uses of `NodeBundle` with `Node`. e.g. ```diff commands - .spawn(NodeBundle { - style: Style { + .spawn(( + Node::default(), + Style { width: Val::Percent(100.), align_items: AlignItems::Center, justify_content: JustifyContent::Center, ..default() }, - ..default() - }) + )) ``` - Replace all uses of `ButtonBundle` with `Button`. e.g. ```diff .spawn(( - ButtonBundle { - style: Style { - width: Val::Px(w), - height: Val::Px(h), - // horizontally center child text - justify_content: JustifyContent::Center, - // vertically center child text - align_items: AlignItems::Center, - margin: UiRect::all(Val::Px(20.0)), - ..default() - }, - image: image.clone().into(), + Button, + Style { + width: Val::Px(w), + height: Val::Px(h), + // horizontally center child text + justify_content: JustifyContent::Center, + // vertically center child text + align_items: AlignItems::Center, + margin: UiRect::all(Val::Px(20.0)), ..default() }, + UiImage::from(image.clone()), ImageScaleMode::Sliced(slicer.clone()), )) ``` - Replace all uses of `ImageBundle` with `UiImage`. e.g. ```diff - commands.spawn(ImageBundle { - image: UiImage { + commands.spawn(( + UiImage { texture: metering_mask, ..default() }, - style: Style { + Style { width: Val::Percent(100.0), height: Val::Percent(100.0), ..default() }, - ..default() - }); + )); ``` --------- Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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UkoeHB
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c2c19e5ae4
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Text rework (#15591)
**Ready for review. Examples migration progress: 100%.** # Objective - Implement https://github.com/bevyengine/bevy/discussions/15014 ## Solution This implements [cart's proposal](https://github.com/bevyengine/bevy/discussions/15014#discussioncomment-10574459) faithfully except for one change. I separated `TextSpan` from `TextSpan2d` because `TextSpan` needs to require the `GhostNode` component, which is a `bevy_ui` component only usable by UI. Extra changes: - Added `EntityCommands::commands_mut` that returns a mutable reference. This is a blocker for extension methods that return something other than `self`. Note that `sickle_ui`'s `UiBuilder::commands` returns a mutable reference for this reason. ## Testing - [x] Text examples all work. --- ## Showcase TODO: showcase-worthy ## Migration Guide TODO: very breaking ### Accessing text spans by index Text sections are now text sections on different entities in a hierarchy, Use the new `TextReader` and `TextWriter` system parameters to access spans by index. Before: ```rust fn refresh_text(mut query: Query<&mut Text, With<TimeText>>, time: Res<Time>) { let text = query.single_mut(); text.sections[1].value = format_time(time.elapsed()); } ``` After: ```rust fn refresh_text( query: Query<Entity, With<TimeText>>, mut writer: UiTextWriter, time: Res<Time> ) { let entity = query.single(); *writer.text(entity, 1) = format_time(time.elapsed()); } ``` ### Iterating text spans Text spans are now entities in a hierarchy, so the new `UiTextReader` and `UiTextWriter` system parameters provide ways to iterate that hierarchy. The `UiTextReader::iter` method will give you a normal iterator over spans, and `UiTextWriter::for_each` lets you visit each of the spans. --------- Co-authored-by: ickshonpe <david.curthoys@googlemail.com> Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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Joona Aalto
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25bfa80e60
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Migrate cameras to required components (#15641)
# 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. |
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Tim
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eb51b4c28e
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Migrate scenes to required components (#15579)
# Objective A step in the migration to required components: scenes! ## Solution As per the [selected proposal](https://hackmd.io/@bevy/required_components/%2FPJtNGVMMQhyM0zIvCJSkbA): - Deprecate `SceneBundle` and `DynamicSceneBundle`. - Add `SceneRoot` and `DynamicSceneRoot` components, which wrap a `Handle<Scene>` and `Handle<DynamicScene>` respectively. ## Migration Guide Asset handles for scenes and dynamic scenes must now be wrapped in the `SceneRoot` and `DynamicSceneRoot` components. Raw handles as components no longer spawn scenes. Additionally, `SceneBundle` and `DynamicSceneBundle` have been deprecated. Instead, use the scene components directly. Previously: ```rust let model_scene = asset_server.load(GltfAssetLabel::Scene(0).from_asset("model.gltf")); commands.spawn(SceneBundle { scene: model_scene, transform: Transform::from_xyz(-4.0, 0.0, -3.0), ..default() }); ``` Now: ```rust let model_scene = asset_server.load(GltfAssetLabel::Scene(0).from_asset("model.gltf")); commands.spawn(( SceneRoot(model_scene), Transform::from_xyz(-4.0, 0.0, -3.0), )); ``` |
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Joona Aalto
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54006b107b
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Migrate meshes and materials to required components (#15524)
# Objective A big step in the migration to required components: meshes and materials! ## Solution As per the [selected proposal](https://hackmd.io/@bevy/required_components/%2Fj9-PnF-2QKK0on1KQ29UWQ): - Deprecate `MaterialMesh2dBundle`, `MaterialMeshBundle`, and `PbrBundle`. - Add `Mesh2d` and `Mesh3d` components, which wrap a `Handle<Mesh>`. - Add `MeshMaterial2d<M: Material2d>` and `MeshMaterial3d<M: Material>`, which wrap a `Handle<M>`. - Meshes *without* a mesh material should be rendered with a default material. The existence of a material is determined by `HasMaterial2d`/`HasMaterial3d`, which is required by `MeshMaterial2d`/`MeshMaterial3d`. This gets around problems with the generics. Previously: ```rust commands.spawn(MaterialMesh2dBundle { mesh: meshes.add(Circle::new(100.0)).into(), material: materials.add(Color::srgb(7.5, 0.0, 7.5)), transform: Transform::from_translation(Vec3::new(-200., 0., 0.)), ..default() }); ``` Now: ```rust commands.spawn(( Mesh2d(meshes.add(Circle::new(100.0))), MeshMaterial2d(materials.add(Color::srgb(7.5, 0.0, 7.5))), Transform::from_translation(Vec3::new(-200., 0., 0.)), )); ``` If the mesh material is missing, previously nothing was rendered. Now, it renders a white default `ColorMaterial` in 2D and a `StandardMaterial` in 3D (this can be overridden). Below, only every other entity has a material:   Why white? This is still open for discussion, but I think white makes sense for a *default* material, while *invalid* asset handles pointing to nothing should have something like a pink material to indicate that something is broken (I don't handle that in this PR yet). This is kind of a mix of Godot and Unity: Godot just renders a white material for non-existent materials, while Unity renders nothing when no materials exist, but renders pink for invalid materials. I can also change the default material to pink if that is preferable though. ## Testing I ran some 2D and 3D examples to test if anything changed visually. I have not tested all examples or features yet however. If anyone wants to test more extensively, it would be appreciated! ## Implementation Notes - The relationship between `bevy_render` and `bevy_pbr` is weird here. `bevy_render` needs `Mesh3d` for its own systems, but `bevy_pbr` has all of the material logic, and `bevy_render` doesn't depend on it. I feel like the two crates should be refactored in some way, but I think that's out of scope for this PR. - I didn't migrate meshlets to required components yet. That can probably be done in a follow-up, as this is already a huge PR. - It is becoming increasingly clear to me that we really, *really* want to disallow raw asset handles as components. They caused me a *ton* of headache here already, and it took me a long time to find every place that queried for them or inserted them directly on entities, since there were no compiler errors for it. If we don't remove the `Component` derive, I expect raw asset handles to be a *huge* footgun for users as we transition to wrapper components, especially as handles as components have been the norm so far. I personally consider this to be a blocker for 0.15: we need to migrate to wrapper components for asset handles everywhere, and remove the `Component` derive. Also see https://github.com/bevyengine/bevy/issues/14124. --- ## Migration Guide Asset handles for meshes and mesh materials must now be wrapped in the `Mesh2d` and `MeshMaterial2d` or `Mesh3d` and `MeshMaterial3d` components for 2D and 3D respectively. Raw handles as components no longer render meshes. Additionally, `MaterialMesh2dBundle`, `MaterialMeshBundle`, and `PbrBundle` have been deprecated. Instead, use the mesh and material components directly. Previously: ```rust commands.spawn(MaterialMesh2dBundle { mesh: meshes.add(Circle::new(100.0)).into(), material: materials.add(Color::srgb(7.5, 0.0, 7.5)), transform: Transform::from_translation(Vec3::new(-200., 0., 0.)), ..default() }); ``` Now: ```rust commands.spawn(( Mesh2d(meshes.add(Circle::new(100.0))), MeshMaterial2d(materials.add(Color::srgb(7.5, 0.0, 7.5))), Transform::from_translation(Vec3::new(-200., 0., 0.)), )); ``` If the mesh material is missing, a white default material is now used. Previously, nothing was rendered if the material was missing. The `WithMesh2d` and `WithMesh3d` query filter type aliases have also been removed. Simply use `With<Mesh2d>` or `With<Mesh3d>`. --------- Co-authored-by: Tim Blackbird <justthecooldude@gmail.com> Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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Joona Aalto
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de888a373d
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Migrate lights to required components (#15554)
# Objective Another step in the migration to required components: lights! Note that this does not include `EnvironmentMapLight` or reflection probes yet, because their API hasn't been fully chosen yet. ## Solution As per the [selected proposals](https://hackmd.io/@bevy/required_components/%2FLLnzwz9XTxiD7i2jiUXkJg): - Deprecate `PointLightBundle` in favor of the `PointLight` component - Deprecate `SpotLightBundle` in favor of the `PointLight` component - Deprecate `DirectionalLightBundle` in favor of the `DirectionalLight` component ## Testing I ran some examples with lights. --- ## Migration Guide `PointLightBundle`, `SpotLightBundle`, and `DirectionalLightBundle` have been deprecated. Use the `PointLight`, `SpotLight`, and `DirectionalLight` components instead. Adding them will now insert the other components required by them automatically. |
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akimakinai
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c1c003d3c7
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Fix num_cascades in split_screen exmample for WebGL (#14601)
# Objective
- Fixes #14595
## Solution
- Use `num_cascades: 1` in WebGL build.
`CascadeShadowConfigBuilder::default()` gives this number in WebGL:
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Rob Parrett
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7fb927f725
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Fix button placement in split_screen example (#14405)
# Objective
Fixes the buttons in `split_screen` touching the edge of the viewport.
## Solution
This seems like it might potentially be "normal css-like" behavior with
absolutely positioned nodes and padding.
<details>
<summary>HTML test</summary>
```html
<html>
<body>
<div style="width: 100%; height: 100%; padding: 20px;">
<div style="width: 100%; height: 100%; padding: 20px; display: flex; justify-content: space-between; align-items: center">
<div style="width: 40px; height: 40px; border: 1px solid black;"><</div>
<div style="width: 40px; height: 40px; border: 1px solid black;">></div>
</div>
</div>
</body>
</html>
```
</details>
Instead I just removed the padding from the root node.
## Testing
Added ui debug gizmos to the example and checked before/after.
Before:
<img width="1280" alt="Screenshot 2024-07-20 at 9 23 09 AM"
src="https://github.com/user-attachments/assets/f3cac637-8de9-4acf-bb13-994791998bb7">
After:
<img width="1280" alt="Screenshot 2024-07-20 at 9 37 27 AM"
src="https://github.com/user-attachments/assets/4d3c23b4-5a48-45da-b8a5-a394fd34a44b">
|
||
|
charlotte
|
3aa525885b
|
Set scissor on upscale to match camera viewport (#14287)
# Objective When the user renders multiple cameras to the same output texture, it can sometimes be confusing what `ClearColorConfig` is necessary for each camera to avoid overwriting the previous camera's output. This is particular true in cases where the user uses mixed HDR cameras, which means that their scene is being rendered to different internal textures. ## Solution When a view has a configured viewport, set the GPU scissor in the upscaling node so we don't overwrite areas that were written to by other cameras. ## Testing Ran the `split_screen` example. |
||
|
Alice Cecile
|
336fddb101
|
Make default behavior for BackgroundColor and BorderColor more intuitive (#14017)
# Objective In Bevy 0.13, `BackgroundColor` simply tinted the image of any `UiImage`. This was confusing: in every other case (e.g. Text), this added a solid square behind the element. #11165 changed this, but removed `BackgroundColor` from `ImageBundle` to avoid confusion, since the semantic meaning had changed. However, this resulted in a serious UX downgrade / inconsistency, as this behavior was no longer part of the bundle (unlike for `TextBundle` or `NodeBundle`), leaving users with a relatively frustrating upgrade path. Additionally, adding both `BackgroundColor` and `UiImage` resulted in a bizarre effect, where the background color was seemingly ignored as it was covered by a solid white placeholder image. Fixes #13969. ## Solution Per @viridia's design: > - if you don't specify a background color, it's transparent. > - if you don't specify an image color, it's white (because it's a multiplier). > - if you don't specify an image, no image is drawn. > - if you specify both a background color and an image color, they are independent. > - the background color is drawn behind the image (in whatever pixels are transparent) As laid out by @benfrankel, this involves: 1. Changing the default `UiImage` to use a transparent texture but a pure white tint. 2. Adding `UiImage::solid_color` to quickly set placeholder images. 3. Changing the default `BorderColor` and `BackgroundColor` to transparent. 4. Removing the default overrides for these values in the other assorted UI bundles. 5. Adding `BackgroundColor` back to `ImageBundle` and `ButtonBundle`. 6. Adding a 1x1 `Image::transparent`, which can be accessed from `Assets<Image>` via the `TRANSPARENT_IMAGE_HANDLE` constant. Huge thanks to everyone who helped out with the design in the linked issue and [the Discord thread](https://discord.com/channels/691052431525675048/1255209923890118697/1255209999278280844): this was very much a joint design. @cart helped me figure out how to set the UiImage's default texture to a transparent 1x1 image, which is a much nicer fix. ## Testing I've checked the examples modified by this PR, and the `ui` example as well just to be sure. ## Migration Guide - `BackgroundColor` no longer tints the color of images in `ImageBundle` or `ButtonBundle`. Set `UiImage::color` to tint images instead. - The default texture for `UiImage` is now a transparent white square. Use `UiImage::solid_color` to quickly draw debug images. - The default value for `BackgroundColor` and `BorderColor` is now transparent. Set the color to white manually to return to previous behavior. |
||
|
François Mockers
|
5559632977
|
glTF labels: add enum to avoid misspelling and keep up-to-date list documented (#13586)
# Objective - Followup to #13548 - It added a list of all possible labels to documentation. This seems hard to keep up and doesn't stop people from making spelling mistake ## Solution - Add an enum that can create all the labels possible, and encourage its use rather than manually typed labels --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> Co-authored-by: Rob Parrett <robparrett@gmail.com> |
||
|
Martín Maita
|
f237cf2441
|
Updates default Text font size to 24px (#13603)
# Objective - The default font size is too small to be useful in examples or for debug text. - Fixes #13587 ## Solution - Updated the default font size value in `TextStyle` from 12px to 24px. - Resorted to Text defaults in examples to use the default font size in most of them. ## Testing - WIP --- ## Migration Guide - The default font size has been increased to 24px from 12px. Make sure you set the font to the appropriate values in places you were using `Default` text style. |
||
|
Rob Parrett
|
d56e16754c
|
Fix "dark grey" colors becoming lighter in various examples (#12333)
# Objective Fixes #12226 Prior to the `bevy_color` port, `DARK GRAY` used to mean "dark grey." But it is now lighter than `GRAY`, matching the css4 spec. ## Solution Change usages of `css::DARK_GRAY` to `Color::srgb(0.25, 0.25, 0.25)` to restore the examples to their former colors. With one exception: `display_and_visibility`. I think the new color is an improvement. ## Note A lot of these examples could use nicer colors. I'm not trying to revamp everything here. The css4 palette is truly a horror. See #12176 and #12080 for some discussion about alternatives. |
||
|
Ben Frankel
|
e8ae0d6c49
|
Decouple BackgroundColor from UiImage (#11165)
# Objective Fixes https://github.com/bevyengine/bevy/issues/11157. ## Solution Stop using `BackgroundColor` as a color tint for `UiImage`. Add a `UiImage::color` field for color tint instead. Allow a UI node to simultaneously include a solid-color background and an image, with the image rendered on top of the background (this is already how it works for e.g. text).  --- ## Changelog - The `BackgroundColor` component now renders a solid-color background behind `UiImage` instead of tinting its color. - Removed `BackgroundColor` from `ImageBundle`, `AtlasImageBundle`, and `ButtonBundle`. - Added `UiImage::color`. - Expanded `RenderUiSystem` variants. - Renamed `bevy_ui::extract_text_uinodes` to `extract_uinodes_text` for consistency. ## Migration Guide - `BackgroundColor` no longer tints the color of UI images. Use `UiImage::color` for that instead. - For solid color buttons, replace `ButtonBundle { background_color: my_color.into(), ... }` with `ButtonBundle { image: UiImage::default().with_color(my_color), ... }`, and update button interaction systems to use `UiImage::color` instead of `BackgroundColor` as well. - `bevy_ui::RenderUiSystem::ExtractNode` has been split into `ExtractBackgrounds`, `ExtractImages`, `ExtractBorders`, and `ExtractText`. - `bevy_ui::extract_uinodes` has been split into `bevy_ui::extract_uinode_background_colors` and `bevy_ui::extract_uinode_images`. - `bevy_ui::extract_text_uinodes` has been renamed to `extract_uinode_text`. |
||
|
Natalie Soltis
|
cc32610543
|
Add size and physical_size to window (#12238)
This is an implementation within `bevy_window::window` that fixes #12229. # Objective Fixes #12229, allow users to retrieve the window's size and physical size as Vectors without having to manually construct them using `height()` and `width()` or `physical_height()` and `physical_width()` ## Solution As suggested in #12229, created two public functions within `window`: `size() -> Vec` and `physical_size() -> UVec` that return the needed Vectors ready-to-go. ### Discussion My first FOSS PRQ ever, so bear with me a bit. I'm new to this. - I replaced instances of ```Vec2::new(window.width(), window.height());``` or `UVec2::new(window.physical_width(), window.physical_height());` within bevy examples be replaced with their `size()`/`physical_size()` counterparts? - Discussion within #12229 still holds: should these also be added to WindowResolution? |
||
|
Alice Cecile
|
599e5e4e76
|
Migrate from LegacyColor to bevy_color::Color (#12163)
# Objective - As part of the migration process we need to a) see the end effect of the migration on user ergonomics b) check for serious perf regressions c) actually migrate the code - To accomplish this, I'm going to attempt to migrate all of the remaining user-facing usages of `LegacyColor` in one PR, being careful to keep a clean commit history. - Fixes #12056. ## Solution I've chosen to use the polymorphic `Color` type as our standard user-facing API. - [x] Migrate `bevy_gizmos`. - [x] Take `impl Into<Color>` in all `bevy_gizmos` APIs - [x] Migrate sprites - [x] Migrate UI - [x] Migrate `ColorMaterial` - [x] Migrate `MaterialMesh2D` - [x] Migrate fog - [x] Migrate lights - [x] Migrate StandardMaterial - [x] Migrate wireframes - [x] Migrate clear color - [x] Migrate text - [x] Migrate gltf loader - [x] Register color types for reflection - [x] Remove `LegacyColor` - [x] Make sure CI passes Incidental improvements to ease migration: - added `Color::srgba_u8`, `Color::srgba_from_array` and friends - added `set_alpha`, `is_fully_transparent` and `is_fully_opaque` to the `Alpha` trait - add and immediately deprecate (lol) `Color::rgb` and friends in favor of more explicit and consistent `Color::srgb` - standardized on white and black for most example text colors - added vector field traits to `LinearRgba`: ~~`Add`, `Sub`, `AddAssign`, `SubAssign`,~~ `Mul<f32>` and `Div<f32>`. Multiplications and divisions do not scale alpha. `Add` and `Sub` have been cut from this PR. - added `LinearRgba` and `Srgba` `RED/GREEN/BLUE` - added `LinearRgba_to_f32_array` and `LinearRgba::to_u32` ## Migration Guide Bevy's color types have changed! Wherever you used a `bevy::render::Color`, a `bevy::color::Color` is used instead. These are quite similar! Both are enums storing a color in a specific color space (or to be more precise, using a specific color model). However, each of the different color models now has its own type. TODO... - `Color::rgba`, `Color::rgb`, `Color::rbga_u8`, `Color::rgb_u8`, `Color::rgb_from_array` are now `Color::srgba`, `Color::srgb`, `Color::srgba_u8`, `Color::srgb_u8` and `Color::srgb_from_array`. - `Color::set_a` and `Color::a` is now `Color::set_alpha` and `Color::alpha`. These are part of the `Alpha` trait in `bevy_color`. - `Color::is_fully_transparent` is now part of the `Alpha` trait in `bevy_color` - `Color::r`, `Color::set_r`, `Color::with_r` and the equivalents for `g`, `b` `h`, `s` and `l` have been removed due to causing silent relatively expensive conversions. Convert your `Color` into the desired color space, perform your operations there, and then convert it back into a polymorphic `Color` enum. - `Color::hex` is now `Srgba::hex`. Call `.into` or construct a `Color::Srgba` variant manually to convert it. - `WireframeMaterial`, `ExtractedUiNode`, `ExtractedDirectionalLight`, `ExtractedPointLight`, `ExtractedSpotLight` and `ExtractedSprite` now store a `LinearRgba`, rather than a polymorphic `Color` - `Color::rgb_linear` and `Color::rgba_linear` are now `Color::linear_rgb` and `Color::linear_rgba` - The various CSS color constants are no longer stored directly on `Color`. Instead, they're defined in the `Srgba` color space, and accessed via `bevy::color::palettes::css`. Call `.into()` on them to convert them into a `Color` for quick debugging use, and consider using the much prettier `tailwind` palette for prototyping. - The `LIME_GREEN` color has been renamed to `LIMEGREEN` to comply with the standard naming. - Vector field arithmetic operations on `Color` (add, subtract, multiply and divide by a f32) have been removed. Instead, convert your colors into `LinearRgba` space, and perform your operations explicitly there. This is particularly relevant when working with emissive or HDR colors, whose color channel values are routinely outside of the ordinary 0 to 1 range. - `Color::as_linear_rgba_f32` has been removed. Call `LinearRgba::to_f32_array` instead, converting if needed. - `Color::as_linear_rgba_u32` has been removed. Call `LinearRgba::to_u32` instead, converting if needed. - Several other color conversion methods to transform LCH or HSL colors into float arrays or `Vec` types have been removed. Please reimplement these externally or open a PR to re-add them if you found them particularly useful. - Various methods on `Color` such as `rgb` or `hsl` to convert the color into a specific color space have been removed. Convert into `LinearRgba`, then to the color space of your choice. - Various implicitly-converting color value methods on `Color` such as `r`, `g`, `b` or `h` have been removed. Please convert it into the color space of your choice, then check these properties. - `Color` no longer implements `AsBindGroup`. Store a `LinearRgba` internally instead to avoid conversion costs. --------- Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com> Co-authored-by: Afonso Lage <lage.afonso@gmail.com> Co-authored-by: Rob Parrett <robparrett@gmail.com> Co-authored-by: Zachary Harrold <zac@harrold.com.au> |
||
|
Alice Cecile
|
de004da8d5
|
Rename bevy_render::Color to LegacyColor (#12069)
# Objective The migration process for `bevy_color` (#12013) will be fairly involved: there will be hundreds of affected files, and a large number of APIs. ## Solution To allow us to proceed granularly, we're going to keep both `bevy_color::Color` (new) and `bevy_render::Color` (old) around until the migration is complete. However, simply doing this directly is confusing! They're both called `Color`, making it very hard to tell when a portion of the code has been ported. As discussed in #12056, by renaming the old `Color` type, we can make it easier to gradually migrate over, one API at a time. ## Migration Guide THIS MIGRATION GUIDE INTENTIONALLY LEFT BLANK. This change should not be shipped to end users: delete this section in the final migration guide! --------- Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com> |
||
|
Jerome Humbert
|
5a74ff6f5e
|
Update split_screen example with 4 cameras (#12010)
# Objective Improve `split_screen` example to use 4 cameras. This serves as a visual regression test for #12006. ## Solution With the fix of #11968:  Without (current `main`):  |
||
|
Doonv
|
dc9b486650
|
Change light defaults & fix light examples (#11581)
# Objective Fix https://github.com/bevyengine/bevy/issues/11577. ## Solution Fix the examples, add a few constants to make setting light values easier, and change the default lighting settings to be more realistic. (Now designed for an overcast day instead of an indoor environment) --- I did not include any example-related changes in here. ## Changelogs (not including breaking changes) ### bevy_pbr - Added `light_consts` module (included in prelude), which contains common lux and lumen values for lights. - Added `AmbientLight::NONE` constant, which is an ambient light with a brightness of 0. - Added non-EV100 variants for `ExposureSettings`'s EV100 constants, which allow easier construction of an `ExposureSettings` from a EV100 constant. ## Breaking changes ### bevy_pbr The several default lighting values were changed: - `PointLight`'s default `intensity` is now `2000.0` - `SpotLight`'s default `intensity` is now `2000.0` - `DirectionalLight`'s default `illuminance` is now `light_consts::lux::OVERCAST_DAY` (`1000.`) - `AmbientLight`'s default `brightness` is now `20.0` |
||
|
Joona Aalto
|
0166db33f7
|
Deprecate shapes in bevy_render::mesh::shape (#11773)
# 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()); ``` |
||
|
JMS55
|
fcd7c0fc3d
|
Exposure settings (adopted) (#11347)
Rebased and finished version of https://github.com/bevyengine/bevy/pull/8407. Huge thanks to @GitGhillie for adjusting all the examples, and the many other people who helped write this PR (@superdump , @coreh , among others) :) Fixes https://github.com/bevyengine/bevy/issues/8369 --- ## Changelog - Added a `brightness` control to `Skybox`. - Added an `intensity` control to `EnvironmentMapLight`. - Added `ExposureSettings` and `PhysicalCameraParameters` for controlling exposure of 3D cameras. - Removed the baked-in `DirectionalLight` exposure Bevy previously hardcoded internally. ## Migration Guide - If using a `Skybox` or `EnvironmentMapLight`, use the new `brightness` and `intensity` controls to adjust their strength. - All 3D scene will now have different apparent brightnesses due to Bevy implementing proper exposure controls. You will have to adjust the intensity of your lights and/or your camera exposure via the new `ExposureSettings` component to compensate. --------- Co-authored-by: Robert Swain <robert.swain@gmail.com> Co-authored-by: GitGhillie <jillisnoordhoek@gmail.com> Co-authored-by: Marco Buono <thecoreh@gmail.com> Co-authored-by: vero <email@atlasdostal.com> Co-authored-by: atlas dostal <rodol@rivalrebels.com> |
||
|
Roman Salnikov
|
eb9db21113
|
Camera-driven UI (#10559)
# Objective Add support for presenting each UI tree on a specific window and viewport, while making as few breaking changes as possible. This PR is meant to resolve the following issues at once, since they're all related. - Fixes #5622 - Fixes #5570 - Fixes #5621 Adopted #5892 , but started over since the current codebase diverged significantly from the original PR branch. Also, I made a decision to propagate component to children instead of recursively iterating over nodes in search for the root. ## Solution Add a new optional component that can be inserted to UI root nodes and propagate to children to specify which camera it should render onto. This is then used to get the render target and the viewport for that UI tree. Since this component is optional, the default behavior should be to render onto the single camera (if only one exist) and warn of ambiguity if multiple cameras exist. This reduces the complexity for users with just one camera, while giving control in contexts where it matters. ## Changelog - Adds `TargetCamera(Entity)` component to specify which camera should a node tree be rendered into. If only one camera exists, this component is optional. - Adds an example of rendering UI to a texture and using it as a material in a 3D world. - Fixes recalculation of physical viewport size when target scale factor changes. This can happen when the window is moved between displays with different DPI. - Changes examples to demonstrate assigning UI to different viewports and windows and make interactions in an offset viewport testable. - Removes `UiCameraConfig`. UI visibility now can be controlled via combination of explicit `TargetCamera` and `Visibility` on the root nodes. --------- Co-authored-by: davier <bricedavier@gmail.com> Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com> |
||
|
Joona Aalto
|
a795de30b4
|
Use impl Into<A> for Assets::add (#10878)
# Motivation
When spawning entities into a scene, it is very common to create assets
like meshes and materials and to add them via asset handles. A common
setup might look like this:
```rust
fn setup(
mut commands: Commands,
mut meshes: ResMut<Assets<Mesh>>,
mut materials: ResMut<Assets<StandardMaterial>>,
) {
commands.spawn(PbrBundle {
mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
material: materials.add(StandardMaterial::from(Color::RED)),
..default()
});
}
```
Let's take a closer look at the part that adds the assets using `add`.
```rust
mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
material: materials.add(StandardMaterial::from(Color::RED)),
```
Here, "mesh" and "material" are both repeated three times. It's very
explicit, but I find it to be a bit verbose. In addition to being more
code to read and write, the extra characters can sometimes also lead to
the code being formatted to span multiple lines even though the core
task, adding e.g. a primitive mesh, is extremely simple.
A way to address this is by using `.into()`:
```rust
mesh: meshes.add(shape::Cube { size: 1.0 }.into()),
material: materials.add(Color::RED.into()),
```
This is fine, but from the names and the type of `meshes`, we already
know what the type should be. It's very clear that `Cube` should be
turned into a `Mesh` because of the context it's used in. `.into()` is
just seven characters, but it's so common that it quickly adds up and
gets annoying.
It would be nice if you could skip all of the conversion and let Bevy
handle it for you:
```rust
mesh: meshes.add(shape::Cube { size: 1.0 }),
material: materials.add(Color::RED),
```
# Objective
Make adding assets more ergonomic by making `Assets::add` take an `impl
Into<A>` instead of `A`.
## Solution
`Assets::add` now takes an `impl Into<A>` instead of `A`, so e.g. this
works:
```rust
commands.spawn(PbrBundle {
mesh: meshes.add(shape::Cube { size: 1.0 }),
material: materials.add(Color::RED),
..default()
});
```
I also changed all examples to use this API, which increases consistency
as well because `Mesh::from` and `into` were being used arbitrarily even
in the same file. This also gets rid of some lines of code because
formatting is nicer.
---
## Changelog
- `Assets::add` now takes an `impl Into<A>` instead of `A`
- Examples don't use `T::from(K)` or `K.into()` when adding assets
## Migration Guide
Some `into` calls that worked previously might now be broken because of
the new trait bounds. You need to either remove `into` or perform the
conversion explicitly with `from`:
```rust
// Doesn't compile
let mesh_handle = meshes.add(shape::Cube { size: 1.0 }.into()),
// These compile
let mesh_handle = meshes.add(shape::Cube { size: 1.0 }),
let mesh_handle = meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
```
## Concerns
I believe the primary concerns might be:
1. Is this too implicit?
2. Does this increase codegen bloat?
Previously, the two APIs were using `into` or `from`, and now it's
"nothing" or `from`. You could argue that `into` is slightly more
explicit than "nothing" in cases like the earlier examples where a
`Color` gets converted to e.g. a `StandardMaterial`, but I personally
don't think `into` adds much value even in this case, and you could
still see the actual type from the asset type.
As for codegen bloat, I doubt it adds that much, but I'm not very
familiar with the details of codegen. I personally value the user-facing
code reduction and ergonomics improvements that these changes would
provide, but it might be worth checking the other effects in more
detail.
Another slight concern is migration pain; apps might have a ton of
`into` calls that would need to be removed, and it did take me a while
to do so for Bevy itself (maybe around 20-40 minutes). However, I think
the fact that there *are* so many `into` calls just highlights that the
API could be made nicer, and I'd gladly migrate my own projects for it.
|
||
|
JMS55
|
70b0eacc3b
|
Keep track of when a texture is first cleared (#10325)
# Objective - Custom render passes, or future passes in the engine (such as https://github.com/bevyengine/bevy/pull/10164) need a better way to know and indicate to the core passes whether the view color/depth/prepass attachments have been cleared or not yet this frame, to know if they should clear it themselves or load it. ## Solution - For all render targets (depth textures, shadow textures, prepass textures, main textures) use an atomic bool to track whether or not each texture has been cleared this frame. Abstracted away in the new ColorAttachment and DepthAttachment wrappers. --- ## Changelog - Changed `ViewTarget::get_color_attachment()`, removed arguments. - Changed `ViewTarget::get_unsampled_color_attachment()`, removed arguments. - Removed `Camera3d::clear_color`. - Removed `Camera2d::clear_color`. - Added `Camera::clear_color`. - Added `ExtractedCamera::clear_color`. - Added `ColorAttachment` and `DepthAttachment` wrappers. - Moved `ClearColor` and `ClearColorConfig` from `bevy::core_pipeline::clear_color` to `bevy::render::camera`. - Core render passes now track when a texture is first bound as an attachment in order to decide whether to clear or load it. ## Migration Guide - Remove arguments to `ViewTarget::get_color_attachment()` and `ViewTarget::get_unsampled_color_attachment()`. - Configure clear color on `Camera` instead of on `Camera3d` and `Camera2d`. - Moved `ClearColor` and `ClearColorConfig` from `bevy::core_pipeline::clear_color` to `bevy::render::camera`. - `ViewDepthTexture` must now be created via the `new()` method --------- Co-authored-by: vero <email@atlasdostal.com> Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> |
||
|
lelo
|
42e6dc8987
|
Refactor EventReader::iter to read (#9631)
# Objective - The current `EventReader::iter` has been determined to cause confusion among new Bevy users. It was suggested by @JoJoJet to rename the method to better clarify its usage. - Solves #9624 ## Solution - Rename `EventReader::iter` to `EventReader::read`. - Rename `EventReader::iter_with_id` to `EventReader::read_with_id`. - Rename `ManualEventReader::iter` to `ManualEventReader::read`. - Rename `ManualEventReader::iter_with_id` to `ManualEventReader::read_with_id`. --- ## Changelog - `EventReader::iter` has been renamed to `EventReader::read`. - `EventReader::iter_with_id` has been renamed to `EventReader::read_with_id`. - `ManualEventReader::iter` has been renamed to `ManualEventReader::read`. - `ManualEventReader::iter_with_id` has been renamed to `ManualEventReader::read_with_id`. - Deprecated `EventReader::iter` - Deprecated `EventReader::iter_with_id` - Deprecated `ManualEventReader::iter` - Deprecated `ManualEventReader::iter_with_id` ## Migration Guide - Existing usages of `EventReader::iter` and `EventReader::iter_with_id` will have to be changed to `EventReader::read` and `EventReader::read_with_id` respectively. - Existing usages of `ManualEventReader::iter` and `ManualEventReader::iter_with_id` will have to be changed to `ManualEventReader::read` and `ManualEventReader::read_with_id` respectively. |
||
|
Carter Anderson
|
aefe1f0739
|
Schedule-First: the new and improved add_systems (#8079)
Co-authored-by: Mike <mike.hsu@gmail.com> |
||
|
JoJoJet
|
fd1af7c8b8
|
Replace multiple calls to add_system with add_systems (#8001)
|
||
|
woodroww
|
1bd390806f |
added subdivisions to shape::Plane (#7546)
# Objective There was issue #191 requesting subdivisions on the shape::Plane. I also could have used this recently. I then write the solution. Fixes #191 ## Solution I changed the shape::Plane to include subdivisions field and the code to create the subdivisions. I don't know how people are counting subdivisions so as I put in the doc comments 0 subdivisions results in the original geometry of the Plane. Greater then 0 results in the number of lines dividing the plane. I didn't know if it would be better to create a new struct that implemented this feature, say SubdivisionPlane or change Plane. I decided on changing Plane as that was what the original issue was. It would be trivial to alter this to use another struct instead of altering Plane. The issues of migration, although small, would be eliminated if a new struct was implemented. ## Changelog ### Added Added subdivisions field to shape::Plane ## Migration Guide All the examples needed to be updated to initalize the subdivisions field. Also there were two tests in tests/window that need to be updated. A user would have to update all their uses of shape::Plane to initalize the subdivisions field. |
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Carter Anderson
|
dcc03724a5 |
Base Sets (#7466)
# Objective NOTE: This depends on #7267 and should not be merged until #7267 is merged. If you are reviewing this before that is merged, I highly recommend viewing the Base Sets commit instead of trying to find my changes amongst those from #7267. "Default sets" as described by the [Stageless RFC](https://github.com/bevyengine/rfcs/pull/45) have some [unfortunate consequences](https://github.com/bevyengine/bevy/discussions/7365). ## Solution This adds "base sets" as a variant of `SystemSet`: A set is a "base set" if `SystemSet::is_base` returns `true`. Typically this will be opted-in to using the `SystemSet` derive: ```rust #[derive(SystemSet, Clone, Hash, Debug, PartialEq, Eq)] #[system_set(base)] enum MyBaseSet { A, B, } ``` **Base sets are exclusive**: a system can belong to at most one "base set". Adding a system to more than one will result in an error. When possible we fail immediately during system-config-time with a nice file + line number. For the more nested graph-ey cases, this will fail at the final schedule build. **Base sets cannot belong to other sets**: this is where the word "base" comes from Systems and Sets can only be added to base sets using `in_base_set`. Calling `in_set` with a base set will fail. As will calling `in_base_set` with a normal set. ```rust app.add_system(foo.in_base_set(MyBaseSet::A)) // X must be a normal set ... base sets cannot be added to base sets .configure_set(X.in_base_set(MyBaseSet::A)) ``` Base sets can still be configured like normal sets: ```rust app.add_system(MyBaseSet::B.after(MyBaseSet::Ap)) ``` The primary use case for base sets is enabling a "default base set": ```rust schedule.set_default_base_set(CoreSet::Update) // this will belong to CoreSet::Update by default .add_system(foo) // this will override the default base set with PostUpdate .add_system(bar.in_base_set(CoreSet::PostUpdate)) ``` This allows us to build apis that work by default in the standard Bevy style. This is a rough analog to the "default stage" model, but it use the new "stageless sets" model instead, with all of the ordering flexibility (including exclusive systems) that it provides. --- ## Changelog - Added "base sets" and ported CoreSet to use them. ## Migration Guide TODO |
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|
Alice Cecile
|
206c7ce219 |
Migrate engine to Schedule v3 (#7267)
Huge thanks to @maniwani, @devil-ira, @hymm, @cart, @superdump and @jakobhellermann for the help with this PR. # Objective - Followup #6587. - Minimal integration for the Stageless Scheduling RFC: https://github.com/bevyengine/rfcs/pull/45 ## Solution - [x] Remove old scheduling module - [x] Migrate new methods to no longer use extension methods - [x] Fix compiler errors - [x] Fix benchmarks - [x] Fix examples - [x] Fix docs - [x] Fix tests ## Changelog ### Added - a large number of methods on `App` to work with schedules ergonomically - the `CoreSchedule` enum - `App::add_extract_system` via the `RenderingAppExtension` trait extension method - the private `prepare_view_uniforms` system now has a public system set for scheduling purposes, called `ViewSet::PrepareUniforms` ### Removed - stages, and all code that mentions stages - states have been dramatically simplified, and no longer use a stack - `RunCriteriaLabel` - `AsSystemLabel` trait - `on_hierarchy_reports_enabled` run criteria (now just uses an ad hoc resource checking run condition) - systems in `RenderSet/Stage::Extract` no longer warn when they do not read data from the main world - `RunCriteriaLabel` - `transform_propagate_system_set`: this was a nonstandard pattern that didn't actually provide enough control. The systems are already `pub`: the docs have been updated to ensure that the third-party usage is clear. ### Changed - `System::default_labels` is now `System::default_system_sets`. - `App::add_default_labels` is now `App::add_default_sets` - `CoreStage` and `StartupStage` enums are now `CoreSet` and `StartupSet` - `App::add_system_set` was renamed to `App::add_systems` - The `StartupSchedule` label is now defined as part of the `CoreSchedules` enum - `.label(SystemLabel)` is now referred to as `.in_set(SystemSet)` - `SystemLabel` trait was replaced by `SystemSet` - `SystemTypeIdLabel<T>` was replaced by `SystemSetType<T>` - The `ReportHierarchyIssue` resource now has a public constructor (`new`), and implements `PartialEq` - Fixed time steps now use a schedule (`CoreSchedule::FixedTimeStep`) rather than a run criteria. - Adding rendering extraction systems now panics rather than silently failing if no subapp with the `RenderApp` label is found. - the `calculate_bounds` system, with the `CalculateBounds` label, is now in `CoreSet::Update`, rather than in `CoreSet::PostUpdate` before commands are applied. - `SceneSpawnerSystem` now runs under `CoreSet::Update`, rather than `CoreStage::PreUpdate.at_end()`. - `bevy_pbr::add_clusters` is no longer an exclusive system - the top level `bevy_ecs::schedule` module was replaced with `bevy_ecs::scheduling` - `tick_global_task_pools_on_main_thread` is no longer run as an exclusive system. Instead, it has been replaced by `tick_global_task_pools`, which uses a `NonSend` resource to force running on the main thread. ## Migration Guide - Calls to `.label(MyLabel)` should be replaced with `.in_set(MySet)` - Stages have been removed. Replace these with system sets, and then add command flushes using the `apply_system_buffers` exclusive system where needed. - The `CoreStage`, `StartupStage, `RenderStage` and `AssetStage` enums have been replaced with `CoreSet`, `StartupSet, `RenderSet` and `AssetSet`. The same scheduling guarantees have been preserved. - Systems are no longer added to `CoreSet::Update` by default. Add systems manually if this behavior is needed, although you should consider adding your game logic systems to `CoreSchedule::FixedTimestep` instead for more reliable framerate-independent behavior. - Similarly, startup systems are no longer part of `StartupSet::Startup` by default. In most cases, this won't matter to you. - For example, `add_system_to_stage(CoreStage::PostUpdate, my_system)` should be replaced with - `add_system(my_system.in_set(CoreSet::PostUpdate)` - When testing systems or otherwise running them in a headless fashion, simply construct and run a schedule using `Schedule::new()` and `World::run_schedule` rather than constructing stages - Run criteria have been renamed to run conditions. These can now be combined with each other and with states. - Looping run criteria and state stacks have been removed. Use an exclusive system that runs a schedule if you need this level of control over system control flow. - For app-level control flow over which schedules get run when (such as for rollback networking), create your own schedule and insert it under the `CoreSchedule::Outer` label. - Fixed timesteps are now evaluated in a schedule, rather than controlled via run criteria. The `run_fixed_timestep` system runs this schedule between `CoreSet::First` and `CoreSet::PreUpdate` by default. - Command flush points introduced by `AssetStage` have been removed. If you were relying on these, add them back manually. - Adding extract systems is now typically done directly on the main app. Make sure the `RenderingAppExtension` trait is in scope, then call `app.add_extract_system(my_system)`. - the `calculate_bounds` system, with the `CalculateBounds` label, is now in `CoreSet::Update`, rather than in `CoreSet::PostUpdate` before commands are applied. You may need to order your movement systems to occur before this system in order to avoid system order ambiguities in culling behavior. - the `RenderLabel` `AppLabel` was renamed to `RenderApp` for clarity - `App::add_state` now takes 0 arguments: the starting state is set based on the `Default` impl. - Instead of creating `SystemSet` containers for systems that run in stages, simply use `.on_enter::<State::Variant>()` or its `on_exit` or `on_update` siblings. - `SystemLabel` derives should be replaced with `SystemSet`. You will also need to add the `Debug`, `PartialEq`, `Eq`, and `Hash` traits to satisfy the new trait bounds. - `with_run_criteria` has been renamed to `run_if`. Run criteria have been renamed to run conditions for clarity, and should now simply return a bool. - States have been dramatically simplified: there is no longer a "state stack". To queue a transition to the next state, call `NextState::set` ## TODO - [x] remove dead methods on App and World - [x] add `App::add_system_to_schedule` and `App::add_systems_to_schedule` - [x] avoid adding the default system set at inappropriate times - [x] remove any accidental cycles in the default plugins schedule - [x] migrate benchmarks - [x] expose explicit labels for the built-in command flush points - [x] migrate engine code - [x] remove all mentions of stages from the docs - [x] verify docs for States - [x] fix uses of exclusive systems that use .end / .at_start / .before_commands - [x] migrate RenderStage and AssetStage - [x] migrate examples - [x] ensure that transform propagation is exported in a sufficiently public way (the systems are already pub) - [x] ensure that on_enter schedules are run at least once before the main app - [x] re-enable opt-in to execution order ambiguities - [x] revert change to `update_bounds` to ensure it runs in `PostUpdate` - [x] test all examples - [x] unbreak directional lights - [x] unbreak shadows (see 3d_scene, 3d_shape, lighting, transparaency_3d examples) - [x] game menu example shows loading screen and menu simultaneously - [x] display settings menu is a blank screen - [x] `without_winit` example panics - [x] ensure all tests pass - [x] SubApp doc test fails - [x] runs_spawn_local tasks fails - [x] [Fix panic_when_hierachy_cycle test hanging](https://github.com/alice-i-cecile/bevy/pull/120) ## Points of Difficulty and Controversy **Reviewers, please give feedback on these and look closely** 1. Default sets, from the RFC, have been removed. These added a tremendous amount of implicit complexity and result in hard to debug scheduling errors. They're going to be tackled in the form of "base sets" by @cart in a followup. 2. The outer schedule controls which schedule is run when `App::update` is called. 3. I implemented `Label for `Box<dyn Label>` for our label types. This enables us to store schedule labels in concrete form, and then later run them. I ran into the same set of problems when working with one-shot systems. We've previously investigated this pattern in depth, and it does not appear to lead to extra indirection with nested boxes. 4. `SubApp::update` simply runs the default schedule once. This sucks, but this whole API is incomplete and this was the minimal changeset. 5. `time_system` and `tick_global_task_pools_on_main_thread` no longer use exclusive systems to attempt to force scheduling order 6. Implemetnation strategy for fixed timesteps 7. `AssetStage` was migrated to `AssetSet` without reintroducing command flush points. These did not appear to be used, and it's nice to remove these bottlenecks. 8. Migration of `bevy_render/lib.rs` and pipelined rendering. The logic here is unusually tricky, as we have complex scheduling requirements. ## Future Work (ideally before 0.10) - Rename schedule_v3 module to schedule or scheduling - Add a derive macro to states, and likely a `EnumIter` trait of some form - Figure out what exactly to do with the "systems added should basically work by default" problem - Improve ergonomics for working with fixed timesteps and states - Polish FixedTime API to match Time - Rebase and merge #7415 - Resolve all internal ambiguities (blocked on better tools, especially #7442) - Add "base sets" to replace the removed default sets. |
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|
Daniel Chia
|
52f06175dd |
Better cascades config defaults + builder, tweak example configs (#7456)
# Objective - Improve ergonomics / documentation of cascaded shadow maps - Allow for the customization of the nearest shadowing distance. - Fixes #7393 - Fixes #7362 ## Solution - Introduce `CascadeShadowConfigBuilder` - Tweak various example cascade settings for better quality. --- ## Changelog - Made examples look nicer under cascaded shadow maps. - Introduce `CascadeShadowConfigBuilder` to help with creating `CascadeShadowConfig` ## Migration Guide - Configure settings for cascaded shadow maps for directional lights using the newly introduced `CascadeShadowConfigBuilder`. Co-authored-by: Robert Swain <robert.swain@gmail.com> |
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|
Aceeri
|
ddfafab971 |
Windows as Entities (#5589)
# Objective Fix https://github.com/bevyengine/bevy/issues/4530 - Make it easier to open/close/modify windows by setting them up as `Entity`s with a `Window` component. - Make multiple windows very simple to set up. (just add a `Window` component to an entity and it should open) ## Solution - Move all properties of window descriptor to ~components~ a component. - Replace `WindowId` with `Entity`. - ~Use change detection for components to update backend rather than events/commands. (The `CursorMoved`/`WindowResized`/... events are kept for user convenience.~ Check each field individually to see what we need to update, events are still kept for user convenience. --- ## Changelog - `WindowDescriptor` renamed to `Window`. - Width/height consolidated into a `WindowResolution` component. - Requesting maximization/minimization is done on the [`Window::state`] field. - `WindowId` is now `Entity`. ## Migration Guide - Replace `WindowDescriptor` with `Window`. - Change `width` and `height` fields in a `WindowResolution`, either by doing ```rust WindowResolution::new(width, height) // Explicitly // or using From<_> for tuples for convenience (1920., 1080.).into() ``` - Replace any `WindowCommand` code to just modify the `Window`'s fields directly and creating/closing windows is now by spawning/despawning an entity with a `Window` component like so: ```rust let window = commands.spawn(Window { ... }).id(); // open window commands.entity(window).despawn(); // close window ``` ## Unresolved - ~How do we tell when a window is minimized by a user?~ ~Currently using the `Resize(0, 0)` as an indicator of minimization.~ No longer attempting to tell given how finnicky this was across platforms, now the user can only request that a window be maximized/minimized. ## Future work - Move `exit_on_close` functionality out from windowing and into app(?) - https://github.com/bevyengine/bevy/issues/5621 - https://github.com/bevyengine/bevy/issues/7099 - https://github.com/bevyengine/bevy/issues/7098 Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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|
Aceeri
|
8ad9a7c7c4 |
Rename camera "priority" to "order" (#6908)
# Objective The documentation for camera priority is very confusing at the moment, it requires a bit of "double negative" kind of thinking. # Solution Flipping the wording on the documentation to reflect more common usecases like having an overlay camera and also renaming it to "order", since priority implies that it will override the other camera rather than have both run. |
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|
Carter Anderson
|
01aedc8431 |
Spawn now takes a Bundle (#6054)
# Objective Now that we can consolidate Bundles and Components under a single insert (thanks to #2975 and #6039), almost 100% of world spawns now look like `world.spawn().insert((Some, Tuple, Here))`. Spawning an entity without any components is an extremely uncommon pattern, so it makes sense to give spawn the "first class" ergonomic api. This consolidated api should be made consistent across all spawn apis (such as World and Commands). ## Solution All `spawn` apis (`World::spawn`, `Commands:;spawn`, `ChildBuilder::spawn`, and `WorldChildBuilder::spawn`) now accept a bundle as input: ```rust // before: commands .spawn() .insert((A, B, C)); world .spawn() .insert((A, B, C); // after commands.spawn((A, B, C)); world.spawn((A, B, C)); ``` All existing instances of `spawn_bundle` have been deprecated in favor of the new `spawn` api. A new `spawn_empty` has been added, replacing the old `spawn` api. By allowing `world.spawn(some_bundle)` to replace `world.spawn().insert(some_bundle)`, this opened the door to removing the initial entity allocation in the "empty" archetype / table done in `spawn()` (and subsequent move to the actual archetype in `.insert(some_bundle)`). This improves spawn performance by over 10%:  To take this measurement, I added a new `world_spawn` benchmark. Unfortunately, optimizing `Commands::spawn` is slightly less trivial, as Commands expose the Entity id of spawned entities prior to actually spawning. Doing the optimization would (naively) require assurances that the `spawn(some_bundle)` command is applied before all other commands involving the entity (which would not necessarily be true, if memory serves). Optimizing `Commands::spawn` this way does feel possible, but it will require careful thought (and maybe some additional checks), which deserves its own PR. For now, it has the same performance characteristics of the current `Commands::spawn_bundle` on main. **Note that 99% of this PR is simple renames and refactors. The only code that needs careful scrutiny is the new `World::spawn()` impl, which is relatively straightforward, but it has some new unsafe code (which re-uses battle tested BundlerSpawner code path).** --- ## Changelog - All `spawn` apis (`World::spawn`, `Commands:;spawn`, `ChildBuilder::spawn`, and `WorldChildBuilder::spawn`) now accept a bundle as input - All instances of `spawn_bundle` have been deprecated in favor of the new `spawn` api - World and Commands now have `spawn_empty()`, which is equivalent to the old `spawn()` behavior. ## Migration Guide ```rust // Old (0.8): commands .spawn() .insert_bundle((A, B, C)); // New (0.9) commands.spawn((A, B, C)); // Old (0.8): commands.spawn_bundle((A, B, C)); // New (0.9) commands.spawn((A, B, C)); // Old (0.8): let entity = commands.spawn().id(); // New (0.9) let entity = commands.spawn_empty().id(); // Old (0.8) let entity = world.spawn().id(); // New (0.9) let entity = world.spawn_empty(); ``` |
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|
ira
|
65252bb87a |
Consistently use PI to specify angles in examples. (#5825)
Examples inconsistently use either `TAU`, `PI`, `FRAC_PI_2` or `FRAC_PI_4`. Often in odd ways and without `use`ing the constants, making it difficult to parse. * Use `PI` to specify angles. * General code-quality improvements. * Fix borked `hierarchy` example. Co-authored-by: devil-ira <justthecooldude@gmail.com> |
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|
Péter Leéh
|
21dacbf137 |
fix typos in examples (#5711)
## Objective Fixed some typos I came across while reading examples. |
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|
François
|
c6958b3056 |
add a SceneBundle to spawn a scene (#2424)
# Objective
- Spawning a scene is handled as a special case with a command `spawn_scene` that takes an handle but doesn't let you specify anything else. This is the only handle that works that way.
- Workaround for this have been to add the `spawn_scene` on `ChildBuilder` to be able to specify transform of parent, or to make the `SceneSpawner` available to be able to select entities from a scene by their instance id
## Solution
Add a bundle
```rust
pub struct SceneBundle {
pub scene: Handle<Scene>,
pub transform: Transform,
pub global_transform: GlobalTransform,
pub instance_id: Option<InstanceId>,
}
```
and instead of
```rust
commands.spawn_scene(asset_server.load("models/FlightHelmet/FlightHelmet.gltf#Scene0"));
```
you can do
```rust
commands.spawn_bundle(SceneBundle {
scene: asset_server.load("models/FlightHelmet/FlightHelmet.gltf#Scene0"),
..Default::default()
});
```
The scene will be spawned as a child of the entity with the `SceneBundle`
~I would like to remove the command `spawn_scene` in favor of this bundle but didn't do it yet to get feedback first~
Co-authored-by: François <8672791+mockersf@users.noreply.github.com>
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
|
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|
Carter Anderson
|
f28b921209 |
Add "depth_load_op" configuration to 3d Cameras (#4904)
# Objective
Users should be able to configure depth load operations on cameras. Currently every camera clears depth when it is rendered. But sometimes later passes need to rely on depth from previous passes.
## Solution
This adds the `Camera3d::depth_load_op` field with a new `Camera3dDepthLoadOp` value. This is a custom type because Camera3d uses "reverse-z depth" and this helps us record and document that in a discoverable way. It also gives us more control over reflection + other trait impls, whereas `LoadOp` is owned by the `wgpu` crate.
```rust
commands.spawn_bundle(Camera3dBundle {
camera_3d: Camera3d {
depth_load_op: Camera3dDepthLoadOp::Load,
..default()
},
..default()
});
```
### two_passes example with the "second pass" camera configured to the default (clear depth to 0.0)
### two_passes example with the "second pass" camera configured to "load" the depth
---
## Changelog
### Added
* `Camera3d` now has a `depth_load_op` field, which can configure the Camera's main 3d pass depth loading behavior.
|
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|
Carter Anderson
|
5e2cfb2f19 |
Camera Driven Viewports (#4898)
# Objective Users should be able to render cameras to specific areas of a render target, which enables scenarios like split screen, minimaps, etc. Builds on the new Camera Driven Rendering added here: #4745 Fixes: #202 Alternative to #1389 and #3626 (which are incompatible with the new Camera Driven Rendering) ## Solution  Cameras can now configure an optional "viewport", which defines a rectangle within their render target to draw to. If a `Viewport` is defined, the camera's `CameraProjection`, `View`, and visibility calculations will use the viewport configuration instead of the full render target. ```rust // This camera will render to the first half of the primary window (on the left side). commands.spawn_bundle(Camera3dBundle { camera: Camera { viewport: Some(Viewport { physical_position: UVec2::new(0, 0), physical_size: UVec2::new(window.physical_width() / 2, window.physical_height()), depth: 0.0..1.0, }), ..default() }, ..default() }); ``` To account for this, the `Camera` component has received a few adjustments: * `Camera` now has some new getter functions: * `logical_viewport_size`, `physical_viewport_size`, `logical_target_size`, `physical_target_size`, `projection_matrix` * All computed camera values are now private and live on the `ComputedCameraValues` field (logical/physical width/height, the projection matrix). They are now exposed on `Camera` via getters/setters This wasn't _needed_ for viewports, but it was long overdue. --- ## Changelog ### Added * `Camera` components now have a `viewport` field, which can be set to draw to a portion of a render target instead of the full target. * `Camera` component has some new functions: `logical_viewport_size`, `physical_viewport_size`, `logical_target_size`, `physical_target_size`, and `projection_matrix` * Added a new split_screen example illustrating how to render two cameras to the same scene ## Migration Guide `Camera::projection_matrix` is no longer a public field. Use the new `Camera::projection_matrix()` method instead: ```rust // Bevy 0.7 let projection = camera.projection_matrix; // Bevy 0.8 let projection = camera.projection_matrix(); ``` |
