# Objective
One thing missing from the new Color implementation in 0.14 is the
ability to easily convert to a u8 representation of the rgb color.
(note this is a redo of PR https://github.com/bevyengine/bevy/pull/13739
as I needed to move the source branch
## Solution
I have added to_u8_array and to_u8_array_no_alpha to a new trait called
ColorToPacked to mirror the f32 conversions in ColorToComponents and
implemented the new trait for Srgba and LinearRgba.
To go with those I also added matching from_u8... functions and
converted a couple of cases that used ad-hoc implementations of that
conversion to use these.
After discussion on Discord of the experience of using the API I renamed
Color::linear to Color::to_linear, as without that it looks like a
constructor (like Color::rgb).
I also added to_srgba which is the other commonly converted to type of
color (for UI and 2D) to match to_linear.
Removed a redundant extra implementation of to_f32_array for LinearColor
as it is also supplied in ColorToComponents (I'm surprised that's
allowed?)
## Testing
Ran all tests and manually tested.
Added to_and_from_u8 to linear_rgba::tests
## Changelog
visible change is Color::linear becomes Color::to_linear.
---------
Co-authored-by: John Payne <20407779+johngpayne@users.noreply.github.com>
# Objective
The method `AssetServer::add_async` (added in
https://github.com/bevyengine/bevy/pull/13700) requires a future that
returns an `AssetLoadError` error, which was a bit of an oversight on my
part, as that type of error only really makes sense in the context of
bevy's own asset loader -- returning it from user-defined futures isn't
very useful.
## Solution
Allow passing custom error types to `add_async`, which get cast into a
trait object matching the form of `AssetLoader::load`. If merged before
the next release this will not be a breaking change
# Objective
Partially address #13408
Rework of #13613
Unify the very nice forms of interpolation specifically present in
`bevy_math` under a shared trait upon which further behavior can be
based.
The ideas in this PR were prompted by [Lerp smoothing is broken by Freya
Holmer](https://www.youtube.com/watch?v=LSNQuFEDOyQ).
## Solution
There is a new trait `StableInterpolate` in `bevy_math::common_traits`
which enshrines a quite-specific notion of interpolation with a lot of
guarantees:
```rust
/// A type with a natural interpolation that provides strong subdivision guarantees.
///
/// Although the only required method is `interpolate_stable`, many things are expected of it:
///
/// 1. The notion of interpolation should follow naturally from the semantics of the type, so
/// that inferring the interpolation mode from the type alone is sensible.
///
/// 2. The interpolation recovers something equivalent to the starting value at `t = 0.0`
/// and likewise with the ending value at `t = 1.0`.
///
/// 3. Importantly, the interpolation must be *subdivision-stable*: for any interpolation curve
/// between two (unnamed) values and any parameter-value pairs `(t0, p)` and `(t1, q)`, the
/// interpolation curve between `p` and `q` must be the *linear* reparametrization of the original
/// interpolation curve restricted to the interval `[t0, t1]`.
///
/// The last of these conditions is very strong and indicates something like constant speed. It
/// is called "subdivision stability" because it guarantees that breaking up the interpolation
/// into segments and joining them back together has no effect.
///
/// Here is a diagram depicting it:
/// ```text
/// top curve = u.interpolate_stable(v, t)
///
/// t0 => p t1 => q
/// |-------------|---------|-------------|
/// 0 => u / \ 1 => v
/// / \
/// / \
/// / linear \
/// / reparametrization \
/// / t = t0 * (1 - s) + t1 * s \
/// / \
/// |-------------------------------------|
/// 0 => p 1 => q
///
/// bottom curve = p.interpolate_stable(q, s)
/// ```
///
/// Note that some common forms of interpolation do not satisfy this criterion. For example,
/// [`Quat::lerp`] and [`Rot2::nlerp`] are not subdivision-stable.
///
/// Furthermore, this is not to be used as a general trait for abstract interpolation.
/// Consumers rely on the strong guarantees in order for behavior based on this trait to be
/// well-behaved.
///
/// [`Quat::lerp`]: crate::Quat::lerp
/// [`Rot2::nlerp`]: crate::Rot2::nlerp
pub trait StableInterpolate: Clone {
/// Interpolate between this value and the `other` given value using the parameter `t`.
/// Note that the parameter `t` is not necessarily clamped to lie between `0` and `1`.
/// When `t = 0.0`, `self` is recovered, while `other` is recovered at `t = 1.0`,
/// with intermediate values lying between the two.
fn interpolate_stable(&self, other: &Self, t: f32) -> Self;
}
```
This trait has a blanket implementation over `NormedVectorSpace`, where
`lerp` is used, along with implementations for `Rot2`, `Quat`, and the
direction types using variants of `slerp`. Other areas may choose to
implement this trait in order to hook into its functionality, but the
stringent requirements must actually be met.
This trait bears no direct relationship with `bevy_animation`'s
`Animatable` trait, although they may choose to use `interpolate_stable`
in their trait implementations if they wish, as both traits involve
type-inferred interpolations of the same kind. `StableInterpolate` is
not a supertrait of `Animatable` for a couple reasons:
1. Notions of interpolation in animation are generally going to be much
more general than those allowed under these constraints.
2. Laying out these generalized interpolation notions is the domain of
`bevy_animation` rather than of `bevy_math`. (Consider also that
inferring interpolation from types is not universally desirable.)
Similarly, this is not implemented on `bevy_color`'s color types,
although their current mixing behavior does meet the conditions of the
trait.
As an aside, the subdivision-stability condition is of interest
specifically for the [Curve
RFC](https://github.com/bevyengine/rfcs/pull/80), where it also ensures
a kind of stability for subsampling.
Importantly, this trait ensures that the "smooth following" behavior
defined in this PR behaves predictably:
```rust
/// Smoothly nudge this value towards the `target` at a given decay rate. The `decay_rate`
/// parameter controls how fast the distance between `self` and `target` decays relative to
/// the units of `delta`; the intended usage is for `decay_rate` to generally remain fixed,
/// while `delta` is something like `delta_time` from an updating system. This produces a
/// smooth following of the target that is independent of framerate.
///
/// More specifically, when this is called repeatedly, the result is that the distance between
/// `self` and a fixed `target` attenuates exponentially, with the rate of this exponential
/// decay given by `decay_rate`.
///
/// For example, at `decay_rate = 0.0`, this has no effect.
/// At `decay_rate = f32::INFINITY`, `self` immediately snaps to `target`.
/// In general, higher rates mean that `self` moves more quickly towards `target`.
///
/// # Example
/// ```
/// # use bevy_math::{Vec3, StableInterpolate};
/// # let delta_time: f32 = 1.0 / 60.0;
/// let mut object_position: Vec3 = Vec3::ZERO;
/// let target_position: Vec3 = Vec3::new(2.0, 3.0, 5.0);
/// // Decay rate of ln(10) => after 1 second, remaining distance is 1/10th
/// let decay_rate = f32::ln(10.0);
/// // Calling this repeatedly will move `object_position` towards `target_position`:
/// object_position.smooth_nudge(&target_position, decay_rate, delta_time);
/// ```
fn smooth_nudge(&mut self, target: &Self, decay_rate: f32, delta: f32) {
self.interpolate_stable_assign(target, 1.0 - f32::exp(-decay_rate * delta));
}
```
As the documentation indicates, the intention is for this to be called
in game update systems, and `delta` would be something like
`Time::delta_seconds` in Bevy, allowing positions, orientations, and so
on to smoothly follow a target. A new example, `smooth_follow`,
demonstrates a basic implementation of this, with a sphere smoothly
following a sharply moving target:
https://github.com/bevyengine/bevy/assets/2975848/7124b28b-6361-47e3-acf7-d1578ebd0347
## Testing
Tested by running the example with various parameters.
# Objective
- Add support for `segments` for extrusion-meshes, akin to what is
possible with cylinders
## Solution
- Added a `.segments(segments: usize)` function to `ExtrusionBuilder`.
- Implemented support for segments in the meshing algorithm.
- If you set `.segments(0)`, the meshing will fail, just like it does
with cylinders.
## Additional information
Here is a wireframe of some extrusions with 1, 2, 3, etc. segments:
---------
Co-authored-by: Lynn Büttgenbach <62256001+solis-lumine-vorago@users.noreply.github.com>
# Objective
`Scene` and `DynamicScene` work with `InstanceInfo` at different levels
of abstraction
- `Scene::write_to_world_with` returns an `InstanceInfo` whereas
`DynamicScene::write_to_world_with` returns `()`. Instances are created
one level higher at the `SceneSpawner` API level.
- `DynamicScene::write_to_world_with` takes the `entity_map` as an
argument whereas the `Scene` version is less flexible and creates a new
one for you. No reason this needs to be the case.
## Solution
I propose changing `Scene::write_to_world_with` to match the API we have
for `DynamicScene`. Returning the `InstanceInfo` as we do today just
seems like a leaky abstraction - it's only used in
`spawn_sync_internal`. Being able to pass in an entity_map gives you
more flexibility with how you write entities to a world.
This also moves `InstanceInfo` out of `Scene` which is cleaner
conceptually. If someone wants to work with instances then they should
work with `SceneSpawner` - I see `write_to_world_with` as a lower-level
API to be used with exclusive world access.
## Testing
Code is just shifting things around.
## Changelog
Changed `Scene::write_to_world_with` to take `entity_map` as an argument
and no longer return an `InstanceInfo`
## Migration Guide
`Scene::write_to_world_with` no longer returns an `InstanceInfo`.
Before
```rust
scene.write_to_world_with(world, ®istry)
```
After
```rust
let mut entity_map = EntityHashMap::default();
scene.write_to_world_with(world, &mut entity_map, ®istry)
```
# Objective
- Let `init_non_send_resource` take `FromWorld` values again, not only
`Default`
- This reverts an unintended breaking change introduced in #9202
## Solution
- The resource initialized with `init_non_send_resource` requires
`FromWorld` again
# Objective
The `EntityCommands::despawn` method was previously changed from
panicking behavior to a warning, but the docs continue to state that it
panics.
## Solution
- Removed panic section, copied warning blurb from `World::despawn`
- Adds a similar warning blurb to
`DespawnRecursiveExt::despawn_recursive` and
`DespawnRecursiveExt::despawn_descendants`
# Objective
- In #13649 additional method had been added to AppExitStates, but there
feature gate left for method in implementation for App at refactoring
stage.
- Fixes#13733 .
## Solution
- Removed the feature gate.
## Testing
- Ran reproducing example from #13733 with no compilation errors
# Objective
- Fixes#13703
## Solution
- Added `mappings` to the `EntityMapper` trait, which returns an
iterator over currently tracked `Entity` to `Entity` mappings.
- Added `DynEntityMapper` as an [object
safe](https://doc.rust-lang.org/reference/items/traits.html#object-safety)
alternative to `EntityMapper`.
- Added `assert_object_safe` as a helper for ensuring traits are object
safe.
## Testing
- Added new unit test `entity_mapper_iteration` which tests the
`SceneEntityMapper` implementation of `EntityMapper::mappings`.
- Added unit tests to ensure `DynEntityMapper`, `DynEq` and `DynHash`
are object safe.
- Passed CI on my Windows 10 development environment
---
## Changelog
- Added `mappings` to `EntityMapper` trait.
## Migration Guide
- If you are implementing `EntityMapper` yourself, you can use the below
as a stub implementation:
```rust
fn mappings(&self) -> impl Iterator<Item = (Entity, Entity)> {
unimplemented!()
}
```
- If you were using `EntityMapper` as a trait object (`dyn
EntityMapper`), instead use `dyn DynEntityMapper` and its associated
methods.
## Notes
- The original issue proposed returning a `Vec` from `EntityMapper`
instead of an `impl Iterator` to preserve its object safety. This is a
simpler option, but also forces an allocation where it isn't strictly
needed. I've opted for this split into `DynEntityMapper` and
`EntityMapper` as it's been done several times across Bevy already, and
provides maximum flexibility to users.
- `assert_object_safe` is an empty function, since the assertion
actually happens once you try to use a `dyn T` for some trait `T`. I
have still added this function to clearly document what object safety is
within Bevy, and to create a standard way to communicate that a given
trait must be object safe.
- Other traits should have tests added to ensure object safety, but I've
left those off to avoid cluttering this PR further.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
Remove some unnecessary coupling between `DynamicTextureAtlasBuilder`
and `bevy_asset`.
## Solution
Remove the dependency of `DynamicTextureAtlasBuilder::add_texture` to
`bevy_asset`, by directly passing the `Image` of the atlas to mutate,
instead of passing separate `Assets<Image>` and `Handle<Image>` for the
function to do the lookup by itself. The lookup can be done from the
caller, and this allows using the builder in contexts where the `Image`
is not stored inside `Assets`.
Clean-up a bit the font atlas files by introducing a `PlacedGlyph` type
storing the `GlyphId` and its `SubpixelOffset`, which were otherwise
always both passed as function parameters and the pair used as key in
hash maps.
## Testing
There's no change in behavior.
---
## Changelog
- Added a `PlacedGlyph` type aggregating a `GlyphId` and a
`SubpixelOffset`. That type is now used as parameter in a few text atlas
APIs, instead of passing individual values.
## Migration Guide
- Replace the `glyph_id` and `subpixel_offset` of a few text atlas APIs
by a single `place_glyph: PlacedGlyph` parameter trivially combining the
two.
# Objective
Some use cases might require holding onto the previous state of the
animation player for change detection.
## Solution
Added `clone` and `copy` implementation to most animation types.
Added optimized `clone_from` implementations for the specific use case
of holding a `PreviousAnimationPlayer` component.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
previously I worked on fixing issue #13646, back when the error message
did not include the type at all.
But that error message had room for improvement, so I included the
feedback of @alice-i-cecile and @MrGVSV.
The error message will now read `the given key (of type
bevy_reflect::tests::Foo) does not support hashing` or 'the given key
(of type bevy_reflect::DynamicStruct) does not support hashing' in case
of a dynamic struct that represents a hashable struct
i also added a new unit test for this new behaviour
(`reflect_map_no_hash_dynamic`).
Fixes#13646 (again)
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Gino Valente <49806985+MrGVSV@users.noreply.github.com>
# Objective
- `bevy_state_macros` is a new crate added in the 0.14
- it already exists outside of the bevy org:
https://crates.io/crates/bevy_state_macros
## Solution
- Rename the crate
Changes:
- Track whether an output texture has been written to yet and only clear
it on the first write.
- Use `ClearColorConfig` on `CameraOutputMode` instead of a raw
`LoadOp`.
- Track whether a output texture has been seen when specializing the
upscaling pipeline and use alpha blending for extra cameras rendering to
that texture that do not specify an explicit blend mode.
Fixes#6754
## Testing
Tested against provided test case in issue:
---
## Changelog
- Allow cameras rendering to the same output texture with mixed hdr to
work correctly.
## Migration Guide
- - Change `CameraOutputMode` to use `ClearColorConfig` instead of
`LoadOp`.
# Objective
All the links that should go to the `Transform` type in the `Transform`
and `GlobalTransform` docs currently go to the `transform` example
instead.
## Solution
Fix collision of link labels in `Transform` and `GlobalTransform` docs.
A naked unwrap led to an opaque error that can be hit when using the
embedded filewatcher.
I've changed this an unwrap_or_else panic! with the error message
providing more details about the failed operation.
A better solution would be to print an error! and not panic...
This was tested with the asset_processing example.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- apply_normal_mapping was changed to use TBN but the pbr_prepass was
not updated for that change
## Solution
- Update the pbr_prepass to correctly apply normal mapping
* Rename cull_meshlets -> cull_clusters
* Rename meshlet_visible -> cluster_visible
* Add an if statement around meshlet_second_pass_candidates writes,
maybe a small bit of performance.
# Objective
`Mesh::merge` does not need ownership of the right hand side mesh.
## Solution
Made `Mesh::merge` take a reference.
## Testing
Modified existing tests.
---
## Changelog
Made `Mesh::merge` take a reference.
## Migration Guide
* `Mesh::merge` now take a reference of a mesh instead of an owned mesh.
# Objective
Currently, bevy supports custom asset loading via `AssetServer:;add`,
which allows you to add arbitrary assets to the asset system and returns
a handle to it. However this only works for assets that have already
been fully loaded. If your loading logic involves any async, you need to
wait until the asset is done loading before adding it to the server.
This is problematic, as the `Handle` does not get allocated until the
very end, which makes it very difficult to use and defeats the value of
having handles for asynchronously-loaded assets.
## Solution
Add the method `AssetServer::add_async`. This has the same behavior as
`AssetServer::add`, only it accepts a future instead of a fully loaded
asset.
## Testing
I added an identical method to my company's fork of bevy, which works in
our app. I'm not quite sure how to go about adding an actual unit test
for asset loading behvior, but I will note that `AssetServer::add` also
does not appear to have any tests.
---
## Changelog
+ Added `AssetServer::add_async`, which allows adding assets with custom
asynchronous loading behavior to the `AssetServer`
# Objective
- Fixes#13687
## Solution
- Text rendering in UI is still dependent on the `PrimaryWIndow`
- implements #10559 for text rendering
There are other parts of UI that are still `PrimaryWindow` dependent, if
the changes here are OK I'll apply them everywhere.
I'm not a fan of the `EntityHashMap` here to hold the scale factors, but
it seems the quick and easy fix
## Testing
- Run example `multiple_windows` on a screen with a scale factor
different than 1, close the primary window
# Objective
Add labels to GltfNode and GltfMesh - they are missing from the assets
even though they are need if one wants to write a custom Gltf spawning
logic.
Eg AnimationPlayer relies on Name component of the node entities to
control the animation. There is no way to actually get names of the gltf
nodes, thus you can't manually spawn subtree from the scene and animate
it.
## Solution
- Add label field and make use of existing label creation logic to store
it there.
## Testing
- Ran all tests
- Fixed tests for node_hierarchy to use lable now
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: François Mockers <francois.mockers@vleue.com>
# Objective
- Fixes#10820.
## Solution
- Check that the asset ID to be inserted is still being managed.
- Since this route is only used by `AssetServer`-tracked handles, if the
`infos` map no longer contains the asset ID, all handles must have been
dropped. In this case, since nobody can be watching for the result,
we're safe to bail out. This avoids the panic when inserting the asset,
because when the handles are dropped, its slot in `Assets<A>` is
poisoned.
- Someone may be waiting for a labelled asset rather than the main
asset, these are handled with separate calls to `process_asset_load`, so
shouldn't cause any issues.
- Removed the workaround keeping asset info alive after the handle has
died, since we should no longer be trying to operate on any assets once
their handles have been dropped.
## Testing
- I added a `break` in `handle_internal_asset_events`
(`crates/bevy_asset/src/server/mod.rs` on line 1152). I don't believe
this should affect correctness, only efficiency, since it is effectively
only allowing one asset event to be handled per frame. This causes
examples like `animated_fox` to produce the issue fairly frequently.
- I wrote a small program which called `AssetServer::reload` and could
trigger it too.
---
## Changelog
- Fixed an issue which could cause a panic when loading an asset which
was no longer referenced.
---
## Remaining Work
~This needs more testing. I don't yet have a complete project that
reliably crashes without changes to bevy.~ We have at least one vote of
confidence so far from @Testare who had a project broken by this bug.
@cart, (sorry for the ping), I believe you added the code which delays
`remove_dropped`. Was there any other reason `track_assets` needed to
keep the dropped assets alive?
# Objective
- `Rotation2d` is a very long name for a commonly used type.
## Solution
- Rename it to `Rot2` to match `glam`'s naming convention (e.g. `Vec2`)
I ran a poll, and `Rot2` was the favorite of the candidate names.
This is not actually a breaking change, since `Rotation2d` has not been
shipped yet.
---------
Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com>
# Objective
If you try to add an object to the hashmap that is not capable of
hashing, the program panics. For easier debugging, the type for that
object should be included in the error message.
Fixes#13646.
## Solution
initially i tried calling std::any::type_name_of_val. this had the
problem that it would print something like dyn Box<dyn Reflect>, not
helpful. But since these objects all implement Reflect, i used
Reflect::type_path() instead. Previously, the error message was part of
a constant called HASH_ERROR. i changed that to a macro called
hash_error to print the type of that object more easily
## Testing
i adapted the unit test reflect_map_no_hash to expect the type in that
panic aswell
since this is my first contribution, please let me know if i have done
everything properly
# Objective
- Due to coherency, it was previously not possible to implement
`Bounded3d` for `Extrusion<MyCustomPrimitive>`. This PR fixes that.
## Solution
- Added a new trait `BoundedExtrusion: Primitive2d + Bounded2d` which
provides functions for bounding boxes and spheres of extrusions of 2D
primitives.
- Changed all implementations of `Bounded3d for Extrusion<T>` to
`BoundedExtrusion for T`
- Implemented `Bounded3d for Extrusion<T: BoundedExtrusion>`
- Removed the `extrusion_bounding_box` and `extrusion_bounding_sphere`
functions and used them as default implementations in `BoundedExtrusion`
## Testing
- This PR does not change any implementations
---------
Co-authored-by: Lynn Büttgenbach <62256001+solis-lumine-vorago@users.noreply.github.com>
Co-authored-by: Matty <weatherleymatthew@gmail.com>
# Objective
- On macOS, closing a window by respawning its entity freezes
## Solution
- `WindowWrapper` is keeping an `Arc` of the window, to be able to
access it from the rendering thread. Winit windows are closed when they
are dropped. This need to happen on the main thread on macOS
- Dropping it as soon as the window is closed means the last remaining
`Arc` will be in the rendering thread
- This PR keeps the `Arc` for one frame in the rendering thread before
actually dropping it
# Objective
Fill the gap in this functionality by implementing it for `Rotation2d`.
We have this already for `Quat` in addition to the direction types.
## Solution
`bevy_math::sampling` now contains an implementation of
`Distribution<Rotation2d>` for `Standard`, along with the associated
convenience implementation `Rotation2d: FromRng`, which allows syntax
like this for creating a random rotation:
```rust
// With `FromRng`:
let rotation = Rotation2d::from_rng(rng);
// With `rand::random`:
let another_rotation: Rotation2d = random();
// With `Rng::gen`:
let yet_another_rotation: Rotation2d = rng.gen();
```
I also cleaned up the documentation a little bit, seeding the `Rng`s
instead of building them from entropy, along with adding a handful of
inline directives.
# Objective
Skip unnecessary blit then tonemapping is set to none.
## Testing
Only tested locally on our app.
## Changelog
Changed tonemapping not to execute in case it is set to none.
Co-authored-by: Lukas Chodosevicius <lukaschodosevicius@Lukass-MacBook-Pro.local>
This was adopted from #12878. I rebased the changes resolved the
following merge conflicts:
- moved over the changes originally done in bevy_winit/src/lib.rs's
`handle_winit_event` into bevy_winit/src/state.rs's `window_event`
function
- moved WinitEvent::KeyboardFocusLost event forwarding originally done
in bevy_winit/src/winit_event.rs to the equivalent in
bevy_winit/src/state.rs
Tested this by following the modified keyboard_input example from the
original PR.
First, I verified I could reproduce the issue without the changes. Then,
after applying the changes, I verified that when I Alt+Tabbed away from
the running example that the log showed I released Alt and when I tabbed
back it didn't behave like Alt was stuck.
The following is from the original pull request by @gavlig
# Objective
This helps avoiding stuck key presses after switching from and back to
Bevy window. Key press event gets stuck because window loses focus
before receiving a key release event thus we end up with false positive
in ButtonInput.
## Solution
I saw two ways to fix this:
1. add bevy_window as dependency and read WindowFocus events
2. add a KeyboardFocusLost event specifically for this.
I chose the latter because adding another dependency felt wrong, but if
that is more preferable changing this pr won't be a problem. Also if
someone sees another way please let me know.
To test the bug use this small modification over
examples/keyboard_input.rs: (it will work only if you have Alt-Tab
combination for switching between windows in your OS, otherwise change
AltLeft accordingly)
```
//! Demonstrates handling a key press/release.
use bevy::{prelude::*, input:⌨️:KeyboardInput};
fn main() {
App::new()
.add_plugins(DefaultPlugins)
.add_systems(Update, keyboard_input_system)
.run();
}
/// This system prints 'Alt' key state
fn keyboard_input_system(keyboard_input: Res<ButtonInput<KeyCode>>, mut
keyboard_input_events: EventReader<KeyboardInput>) {
for event in keyboard_input_events.read() {
info!("{:?}", event);
}
if keyboard_input.pressed(KeyCode::AltLeft) {
info!("'Alt' currently pressed");
}
if keyboard_input.just_pressed(KeyCode::AltLeft) {
info!("'Alt' just pressed");
}
if keyboard_input.just_released(KeyCode::AltLeft) {
info!("'Alt' just released");
}
}
```
Here i made a quick video with demo of the fix:
https://youtu.be/qTvUCk4IHvo In first part i press Alt and Alt+Tab to
switch back and forth from example app, logs will indicate that too. In
second part I applied fix and you'll see that Alt will no longer be
pressed when window gets unfocused
## Migration Guide
`WinitEvent` has a new enum variant: `WinitEvent::KeyboardFocusLost`.
Co-authored-by: gavlig <gavlig@gmail.com>
# Objective
- Implement `Extrudable` for all meshbuilders of shapes that have been
added after #13478 was created
## Solution
- Implemented meshing for extrusions of `CircularSector`,
`CircularSegment` and `Rhombus`
## Testing
- The correctness of these was confirmed visually.
## Additional information
Here is an image of what they look like :)
Co-authored-by: Lynn Büttgenbach <62256001+solis-lumine-vorago@users.noreply.github.com>
# Objective
The default app runner fabricates exit codes loosing useful info in the
process.
## Solution
- Make run_once extract the correct exit code from app.
- Add a test to confirm it works.
## Testing
- Run the `runner_returns_correct_exit_code` test.
- Rejoice when it succeeds.
# Objective
- Implement `Meshable` for `Extrusion<T>`
## Solution
- `Meshable` requires `Meshable::Output: MeshBuilder` now. This means
that all `some_primitive.mesh()` calls now return a `MeshBuilder`. These
were added for primitives that did not have one prior to this.
- A new trait `Extrudable: MeshBuilder` has been added. This trait
allows you to specify the indices of the perimeter of the mesh created
by this `MeshBuilder` and whether they are to be shaded smooth or flat.
- `Extrusion<P: Primitive2d + Meshable>` is now `Meshable` aswell. The
associated `MeshBuilder` is `ExtrusionMeshBuilder` which is generic over
`P` and uses the `MeshBuilder` of its baseshape internally.
- `ExtrusionMeshBuilder` exposes the configuration functions of its
base-shapes builder.
- Updated the `3d_shapes` example to include `Extrusion`s
## Migration Guide
- Depending on the context, you may need to explicitly call
`.mesh().build()` on primitives where you have previously called
`.mesh()`
- The `Output` type of custom `Meshable` implementations must now derive
`MeshBuilder`.
## Additional information
- The extrusions UVs are done so that
- the front face (`+Z`) is in the area between `(0, 0)` and `(0.5,
0.5)`,
- the back face (`-Z`) is in the area between `(0.5, 0)` and `(1, 0.5)`
- the mantle is in the area between `(0, 0.5)` and `(1, 1)`. Each
`PerimeterSegment` you specified in the `Extrudable` implementation will
be allocated an equal portion of this area.
- The UVs of the base shape are scaled to be in the front/back area so
whatever method of filling the full UV-space the base shape used is how
these areas will be filled.
Here is an example of what that looks like on a capsule:
https://github.com/bevyengine/bevy/assets/62256001/425ad288-fbbc-4634-9d3f-5e846cdce85f
This is the texture used:
The `3d_shapes` example now looks like this:
---------
Co-authored-by: Lynn Büttgenbach <62256001+solis-lumine-vorago@users.noreply.github.com>
Co-authored-by: Matty <weatherleymatthew@gmail.com>
Co-authored-by: Matty <2975848+mweatherley@users.noreply.github.com>
# Objective
- Implement `Bounded3d` for some `Extrusion<T>`
- Provide methods to calculate `Aabb3d`s and `BoundingSphere`s for any
extrusion with a `Bounded2d` base shape
## Solution
- Implemented `Bounded3d` for all 2D `bevy_math` primitives with the
exception of `Plane2d`. As far as I can see, `Plane2d` is pretty much a
line? and I think it is very unintuitive to extrude a plane and get a
plane as a result.
- Add `extrusion_bounding_box` and `extrusion_bounding_sphere`. These
are not always used internally since there are faster methods for
specific extrusions. Both of them produce the optimal result within
precision limits though.
## Testing
- Bounds for extrusions are tested within the same module. All unique
implementations are tested.
- The correctness was validated visually aswell.
---------
Co-authored-by: Raphael Büttgenbach <62256001+solis-lumine-vorago@users.noreply.github.com>
Co-authored-by: IQuick 143 <IQuick143cz@gmail.com>
This commit implements a large subset of [*subpixel morphological
antialiasing*], better known as SMAA. SMAA is a 2011 antialiasing
technique that detects jaggies in an aliased image and smooths them out.
Despite its age, it's been a continual staple of games for over a
decade. Four quality presets are available: *low*, *medium*, *high*, and
*ultra*. I set the default to *high*, on account of modern GPUs being
significantly faster than they were in 2011.
Like the already-implemented FXAA, SMAA works on an unaliased image.
Unlike FXAA, it requires three passes: (1) edge detection; (2) blending
weight calculation; (3) neighborhood blending. Each of the first two
passes writes an intermediate texture for use by the next pass. The
first pass also writes to a stencil buffer in order to dramatically
reduce the number of pixels that the second pass has to examine. Also
unlike FXAA, two built-in lookup textures are required; I bundle them
into the library in compressed KTX2 format.
The [reference implementation of SMAA] is in HLSL, with abundant use of
preprocessor macros to achieve GLSL compatibility. Unfortunately, the
reference implementation predates WGSL by over a decade, so I had to
translate the HLSL to WGSL manually. As much as was reasonably possible
without sacrificing readability, I tried to translate line by line,
preserving comments, both to aid reviewing and to allow patches to the
HLSL to more easily apply to the WGSL. Most of SMAA's features are
supported, but in the interests of making this patch somewhat less huge,
I skipped a few of the more exotic ones:
* The temporal variant is currently unsupported. This is and has been
used in shipping games, so supporting temporal SMAA would be useful
follow-up work. It would, however, require some significant work on TAA
to ensure compatibility, so I opted to skip it in this patch.
* Depth- and chroma-based edge detection are unimplemented; only luma
is. Depth is lower-quality, but faster; chroma is higher-quality, but
slower. Luma is the suggested default edge detection algorithm. (Note
that depth-based edge detection wouldn't work on WebGL 2 anyway, because
of the Naga bug whereby depth sampling is miscompiled in GLSL. This is
the same bug that prevents depth of field from working on that
platform.)
* Predicated thresholding is currently unsupported.
* My implementation is incompatible with SSAA and MSAA, unlike the
original; MSAA must be turned off to use SMAA in Bevy. I believe this
feature was rarely used in practice.
The `anti_aliasing` example has been updated to allow experimentation
with and testing of the different SMAA quality presets. Along the way, I
refactored the example's help text rendering code a bit to eliminate
code repetition.
SMAA is fully supported on WebGL 2.
Fixes#9819.
[*subpixel morphological antialiasing*]: https://www.iryoku.com/smaa/
[reference implementation of SMAA]: https://github.com/iryoku/smaa
## Changelog
### Added
* Subpixel morphological antialiasing, or SMAA, is now available. To use
it, add the `SmaaSettings` component to your `Camera`.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- Other render resources have a convenient `.binding()` helper function
to get the binding to the resource
## Solution
- Add the same thing to `BufferVec`, `RawBufferVec`, and
`UninitBufferVec`
# Objective
Add slice based variants of existing `get_many_entities` functions on
`World`. This allows for a collection of entries to be looked up mutably
or immutably instead of requiring a compile time constant number.
## Solution
We just take slices and return Vectors.
the following functions have been added:
- `get_many_entities_dynamic`
- `get_many_entities_dynamic_mut`
- `get_many_entities_from_set_mut`
## Testing
- Doc tests, which pass when run through Miri
# Objective
Filling a hole in the API: Previously, there was no particularly
ergonomic way to go from, e.g., a pair of directions to the rotation
that links them.
## Solution
We introduce a small suite of API methods to `Dir2` to address this:
```rust
/// Get the rotation that rotates this direction to `other`.
pub fn rotation_to(self, other: Self) -> Rotation2d { //... }
/// Get the rotation that rotates `other` to this direction.
pub fn rotation_from(self, other: Self) -> Rotation2d { //... }
/// Get the rotation that rotates the X-axis to this direction.
pub fn rotation_from_x(self) -> Rotation2d { //... }
/// Get the rotation that rotates this direction to the X-axis.
pub fn rotation_to_x(self) -> Rotation2d { //... }
/// Get the rotation that rotates this direction to the Y-axis.
pub fn rotation_from_y(self) -> Rotation2d { //... }
/// Get the rotation that rotates the Y-axis to this direction.
pub fn rotation_to_y(self) -> Rotation2d { //... }
```
I also removed some language from the `Rotation2d` docs that is
misleading: the radian and angle conversion functions are already clear
about which angles they spit out, and `Rotation2d` itself doesn't have
any bounds on angles or anything.
# Objective
This PR addresses one of the issues from [discord state
discussion](https://discord.com/channels/691052431525675048/1237949214017716356).
Same-state transitions can be desirable, so there should exist a hook
for them.
Fixes https://github.com/bevyengine/bevy/issues/9130.
## Solution
- Allow `StateTransitionEvent<S>` to contain identity transitions.
- Ignore identity transitions at schedule running level (`OnExit`,
`OnTransition`, `OnEnter`).
- Propagate identity transitions through `SubStates` and
`ComputedStates`.
- Add example about registering custom transition schedules.
## Changelog
- `StateTransitionEvent<S>` can be emitted with same `exited` and
`entered` state.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- With the recent winit update, touchpad specific events can also be
triggered on mobile
## Solution
- Rename them to gestures and add support for the new ones
## Testing
- Tested on the mobile example on iOS
https://github.com/bevyengine/bevy/assets/8672791/da4ed23f-ff0a-41b2-9dcd-726e8546bef2
## Migration Guide
- `TouchpadMagnify` has been renamed to `PinchGesture`
- `TouchpadRotate` has been renamed to `RotationGesture `
---------
Co-authored-by: mike <ramirezmike2@gmail.com>
# Objective
Move `StateScoped` and `log_transitions` to `bevy_state`, since they're
useful for end users.
Addresses #12852, although not in the way the issue had in mind.
## Solution
- Added `bevy_hierarchy` to default features of `bevy_state`.
- Move `log_transitions` to `transitions` module.
- Move `StateScoped` to `state_scoped` module, gated behind
`bevy_hierarchy` feature.
- Refreshed implementation.
- Added `enable_state_coped_entities<S: States>()` to add required
machinery to `App` for clearing state-scoped entities.
## Changelog
- Added `log_transitions` for displaying state transitions.
- Added `StateScoped` for binding entity lifetime to state and app
`enable_state_coped_entities` to register cleaning behavior.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: François Mockers <francois.mockers@vleue.com>
We want to use the clustering infrastructure for light probes and decals
as well, not just point lights. This patch builds on top of #13640 and
performs the rename.
To make this series easier to review, this patch makes no code changes.
Only identifiers and comments are modified.
## Migration Guide
* In the PBR shaders, `point_lights` is now known as
`clusterable_objects`, `PointLight` is now known as `ClusterableObject`,
and `cluster_light_index_lists` is now known as
`clusterable_object_index_lists`.
# Objective
This PR addresses #12222 (Fixes#12222). Simple addition to add a 2D
axes gizmo.
## Solution
- Add a new method axes_2d which takes a transform and a case length and
then draws two arrows in the XY plane.
The only thing I'm not sure about here is taking a 3D transform as an
argument. It says in the transform comments that for 2D the z-axis is
used for ordering, so I figured I'd keep it that way?
---
## Changelog
- Add method axes_2d.
- Update arrow_2d to also calculate the tip length depending on arrow
length as in arrow.
- Add axes_2d to examples 2d_gizmos.
---------
Co-authored-by: Ben Lambert <bennett-spencer.lambert@pierer-innovation.com>
This commit implements support for physically-based anisotropy in Bevy's
`StandardMaterial`, following the specification for the
[`KHR_materials_anisotropy`] glTF extension.
[*Anisotropy*] (not to be confused with [anisotropic filtering]) is a
PBR feature that allows roughness to vary along the tangent and
bitangent directions of a mesh. In effect, this causes the specular
light to stretch out into lines instead of a round lobe. This is useful
for modeling brushed metal, hair, and similar surfaces. Support for
anisotropy is a common feature in major game and graphics engines;
Unity, Unreal, Godot, three.js, and Blender all support it to varying
degrees.
Two new parameters have been added to `StandardMaterial`:
`anisotropy_strength` and `anisotropy_rotation`. Anisotropy strength,
which ranges from 0 to 1, represents how much the roughness differs
between the tangent and the bitangent of the mesh. In effect, it
controls how stretched the specular highlight is. Anisotropy rotation
allows the roughness direction to differ from the tangent of the model.
In addition to these two fixed parameters, an *anisotropy texture* can
be supplied. Such a texture should be a 3-channel RGB texture, where the
red and green values specify a direction vector using the same
conventions as a normal map ([0, 1] color values map to [-1, 1] vector
values), and the the blue value represents the strength. This matches
the format that the [`KHR_materials_anisotropy`] specification requires.
Such textures should be loaded as linear and not sRGB. Note that this
texture does consume one additional texture binding in the standard
material shader.
The glTF loader has been updated to properly parse the
`KHR_materials_anisotropy` extension.
A new example, `anisotropy`, has been added. This example loads and
displays the barn lamp example from the [`glTF-Sample-Assets`]
repository. Note that the textures were rather large, so I shrunk them
down and converted them to a mixture of JPEG and KTX2 format, in the
interests of saving space in the Bevy repository.
[*Anisotropy*]:
https://google.github.io/filament/Filament.md.html#materialsystem/anisotropicmodel
[anisotropic filtering]:
https://en.wikipedia.org/wiki/Anisotropic_filtering
[`KHR_materials_anisotropy`]:
https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_materials_anisotropy/README.md
[`glTF-Sample-Assets`]:
https://github.com/KhronosGroup/glTF-Sample-Assets/
## Changelog
### Added
* Physically-based anisotropy is now available for materials, which
enhances the look of surfaces such as brushed metal or hair. glTF scenes
can use the new feature with the `KHR_materials_anisotropy` extension.
## Screenshots
With anisotropy:
Without anisotropy:
Updates the requirements on
[ruzstd](https://github.com/KillingSpark/zstd-rs) to permit the latest
version.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/KillingSpark/zstd-rs/releases">ruzstd's
releases</a>.</em></p>
<blockquote>
<h2>Optimizations, Documentation and slight API changes</h2>
<ul>
<li>Few slight performance optimizations</li>
<li>Big documentation contribution</li>
<li><code>StreamingDecoder</code> now has API to get to the contained
<code>impl Read</code></li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/KillingSpark/zstd-rs/blob/master/Changelog.md">ruzstd's
changelog</a>.</em></p>
<blockquote>
<h1>After 0.7.0</h1>
</blockquote>
</details>
<details>
<summary>Commits</summary>
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href="101df3eac0"><code>101df3e</code></a>
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href="c7ad34bc1c"><code>c7ad34b</code></a>
fix doc on reverse bitreader</li>
<li><a
href="cd73dffe15"><code>cd73dff</code></a>
changelog</li>
<li><a
href="944b391c30"><code>944b391</code></a>
don't return errors on too large requests on a reversed bitreader (<a
href="https://redirect.github.com/KillingSpark/zstd-rs/issues/58">#58</a>)</li>
<li><a
href="53e7b1a600"><code>53e7b1a</code></a>
fix doc comments for clippy</li>
<li><a
href="16fee8cd45"><code>16fee8c</code></a>
Implement accessors for inner reader on StreamDecoder (<a
href="https://redirect.github.com/KillingSpark/zstd-rs/issues/62">#62</a>)</li>
<li><a
href="0b9607324e"><code>0b96073</code></a>
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href="https://redirect.github.com/KillingSpark/zstd-rs/issues/61">#61</a>)</li>
<li><a
href="5265c12c8c"><code>5265c12</code></a>
remove derive_more (<a
href="https://redirect.github.com/KillingSpark/zstd-rs/issues/60">#60</a>)</li>
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href="88f7a41677"><code>88f7a41</code></a>
use core instead of std</li>
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optimize the copying done in the ringbuffer</li>
<li>Additional commits viewable in <a
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# Objective
Implements #13647
## Solution
Created two enums, CompassQuadrant and CompassOctant inside compass.rs
with impls To and From Dir2. Used dir.to_angle().to_degrees() and
matched against the resulting value. I could have skipped to_degrees()
and matched against the radian value, but I thought this was more
readable. I'm probably wrong lol.
## Testing
Tested various dirs to compass variations.
---
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- Fixes#10909
- Fixes#8492
## Solution
- Name all matrices `x_from_y`, for example `world_from_view`.
## Testing
- I've tested most of the 3D examples. The `lighting` example
particularly should hit a lot of the changes and appears to run fine.
---
## Changelog
- Renamed matrices across the engine to follow a `y_from_x` naming,
making the space conversion more obvious.
## Migration Guide
- `Frustum`'s `from_view_projection`, `from_view_projection_custom_far`
and `from_view_projection_no_far` were renamed to
`from_clip_from_world`, `from_clip_from_world_custom_far` and
`from_clip_from_world_no_far`.
- `ComputedCameraValues::projection_matrix` was renamed to
`clip_from_view`.
- `CameraProjection::get_projection_matrix` was renamed to
`get_clip_from_view` (this affects implementations on `Projection`,
`PerspectiveProjection` and `OrthographicProjection`).
- `ViewRangefinder3d::from_view_matrix` was renamed to
`from_world_from_view`.
- `PreviousViewData`'s members were renamed to `view_from_world` and
`clip_from_world`.
- `ExtractedView`'s `projection`, `transform` and `view_projection` were
renamed to `clip_from_view`, `world_from_view` and `clip_from_world`.
- `ViewUniform`'s `view_proj`, `unjittered_view_proj`,
`inverse_view_proj`, `view`, `inverse_view`, `projection` and
`inverse_projection` were renamed to `clip_from_world`,
`unjittered_clip_from_world`, `world_from_clip`, `world_from_view`,
`view_from_world`, `clip_from_view` and `view_from_clip`.
- `GpuDirectionalCascade::view_projection` was renamed to
`clip_from_world`.
- `MeshTransforms`' `transform` and `previous_transform` were renamed to
`world_from_local` and `previous_world_from_local`.
- `MeshUniform`'s `transform`, `previous_transform`,
`inverse_transpose_model_a` and `inverse_transpose_model_b` were renamed
to `world_from_local`, `previous_world_from_local`,
`local_from_world_transpose_a` and `local_from_world_transpose_b` (the
`Mesh` type in WGSL mirrors this, however `transform` and
`previous_transform` were named `model` and `previous_model`).
- `Mesh2dTransforms::transform` was renamed to `world_from_local`.
- `Mesh2dUniform`'s `transform`, `inverse_transpose_model_a` and
`inverse_transpose_model_b` were renamed to `world_from_local`,
`local_from_world_transpose_a` and `local_from_world_transpose_b` (the
`Mesh2d` type in WGSL mirrors this).
- In WGSL, in `bevy_pbr::mesh_functions`, `get_model_matrix` and
`get_previous_model_matrix` were renamed to `get_world_from_local` and
`get_previous_world_from_local`.
- In WGSL, `bevy_sprite::mesh2d_functions::get_model_matrix` was renamed
to `get_world_from_local`.
# Objective
- Fix#10958 by performing entity mapping on the entities inside of
resources.
## Solution
- Resources can reflect(MapEntitiesResource) and impl MapEntities to get
access to the mapper during the world insert of the scene.
## Testing
- A test resource_entity_map_maps_entities confirms the desired
behavior.
## Changelog
- Added reflect(MapEntitiesResource) for mapping entities on Resources
in a DynamicScene.
fixes 10958
# Objective
- Follow-up on some changes in #11498
- Unblock using `Identifier` to replace `ComponentId` internals.
## Solution
- Implement the same `Reflect` impls from `Entity` onto `Identifier` as
they share same/similar purposes,
## Testing
- No compile errors. Currently `Identifier` has no serialization impls,
so there's no need to test a serialization/deserialization roundtrip to
ensure correctness.
---
## Changelog
### Added
- Reflection implementations on `Identifier`.
# Objective
- Add GizmoBuilders for some primitives as discussed in #13233
## Solution
- `gizmos.primitive_2d(CIRCLE)` and `gizmos.primitive_2d(ELLIPSE)` now
return `Ellipse2dBuilder` aswell.
- `gizmos.primitive_3d(SPHERE)` and `gizmos.sphere()` now return the
same `SphereBuilder`.
- the `.circle_segments` method on the `SphereBuilder` that used to be
returned by `.sphere()` is now called `.segments`
- the sphere primitive gizmo now matches the `gizmos.sphere` gizmo
- `gizmos.primitive_2d(ANNULUS)` now returns a `Annulus2dBuilder`
allowing the configuration of the `segments`
- gizmos cylinders and capsules now have only 1 line per axis, similar
to `gizmos.sphere`
## Migration Guide
- Some `gizmos.primitive_nd` methods now return some or different
builders. You may need to adjust types and match statements
- Replace any calls to `circle_segments()` with `.segments()`
---------
Co-authored-by: Raphael Büttgenbach <62256001+solis-lumine-vorago@users.noreply.github.com>
# Objective
When working on `leafwing-input-manager` and in my games, I've found
these compass directions to be both clear and useful when attempting to
describe angles in 2 dimensions.
This was directly used when mapping gamepad inputs into 4-way movement
as a virtual dpad, and I expect other uses are common in games.
## Solution
- Add constants corresponding to the 4 cardinal and 4 semi-cardinal
directions.
## Testing
- I've validated the quadrants of each of the directions through
self-review.
---------
Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com>
As a prerequisite for decals and clustering of light probes, we want
clustering to operate on objects other than lights. (Currently, it only
operates on point and spot lights.) This necessitates a large
refactoring, so I'm splitting it up into small steps.
The first such step is to separate clustering from lighting by moving
clustering-related types and functions out of lighting and into their
own module subtree within the `bevy_pbr` crate. (Ultimately, we may want
to move it to `bevy_render`, but that requires more work and can be a
followup.)
No code changes have been made other than adjusting import lists and
moving code. This is to make this code easy to review. Ultimately, I
want to rename "light" to "clusterable object" in most cases, but doing
that at the same time as moving the code would make reviewing harder. So
instead I'm moving the code first and will follow this up with renaming.
## Migration Guide
* Clustering-related types and functions (e.g.
`assign_lights_to_clusters`) have moved under `bevy_pbr::cluster`, in
preparation for the ability to cluster objects other than lights.
# Objective
- Plane subdivision was removed without providing an alternative
## Solution
- Add subdivision to the PlaneMeshBuilder
---
## Migration Guide
If you were using `Plane` `subdivisions`, you now need to use
`Plane3d::default().mesh().subdivisions(10)`
fixes https://github.com/bevyengine/bevy/issues/13258
# Objective
Small substate code cleanup.
1. Format closure arguments inside macros.
2. Replace `match bool` blocks with `if-else` blocks.
3. Replace `match` block in substate macro with the same one-liner as in
the non-macro version.
# Objective
After separating `bevy_states`, state installation methods like
`init_state` were kept in `bevy_app` under the `bevy_state` feature
flag.
This is problematic, because `bevy_state` is not a core module,
`bevy_app` is, yet it depends on `bevy_state`.
This causes practical problems like the inability to use
`bevy_hierarchy` inside `bevy_state`, because of circular dependencies.
## Solution
- `bevy_state` now has a `bevy_app` feature flag, which gates the new
`AppStateExt` trait.
All previous state installation methods were moved to this trait.
It's implemented for both `SubApp` and `App`.
## Changelog
- All state related app methods are now in `AppExtStates` trait in
`bevy_state`.
- Added `StatesPlugin` which is in `DefaultPlugins` when `bevy_state` is
enabled.
## Migration Guide
`App::init_state` is now provided by the
`bevy_state::app::AppExtStates;` trait: import it if you need this
method and are not blob-importing the `bevy` prelude.
# Objective
`SceneEntityMapper` seems like it could be generally useful.
## Solution
Allow end users to call `SceneEntityMapper::new` and
`SceneEntityMapper::finish`.
# Objective
Add new options to some primitives, like anchoring for Cones and
cylinders and custom angle ranges for Torus.
I think these kind of options are useful, but I would understand that
these addition feel overkill
## Solution
Add
## Testing
- Did you test these changes? If so, how?
> I used the new options in the `3d_shapes` example with various
parameters and got the expected results
## Changelog
- Added `caps` bool option to toggle cylinder circle caps
- Added `angle_range` f32 range option non full torus shapes
- Added `anchor` enum option for cylinders, with either `Top`,
`Midpoint` or `Bottom`
- Added `anchor` enum option for cones, with either `Tip`, `Midpoint` or
`Base`
- **BREAKING** `TorusMeshBuilder` is no longer `Copy` due to
`RangeInclusive`, we can use a `(f32, f32)` if we want it to be `Copy`
# Objective
- fixes#4823
## Solution
As outlined in the discussion in the linked issue as the best current
solution, this PR adds specific GltfExtras for
- scenes
- meshes
- materials
- As it is , it is not a breaking change, I hesitated to rename the
current "GltfExtras" component to "PrimitiveGltfExtras", but that would
result in a breaking change and might be a bit confusing as to what
"primitive" that refers to.
## Testing
- I included a bare-bones example & asset (exported gltf file from
Blender) with gltf extras at all the relevant levels : scene, mesh,
material
---
## Changelog
- adds "SceneGltfExtras" injected at the scene level if any
- adds "MeshGltfExtras", injected at the mesh level if any
- adds "MaterialGltfExtras", injected at the mesh level if any: ie if a
mesh has a material that has gltf extras, the component will be injected
there.
# Objective
- Upgrade winit to v0.30
- Fixes https://github.com/bevyengine/bevy/issues/13331
## Solution
This is a rewrite/adaptation of the new trait system described and
implemented in `winit` v0.30.
## Migration Guide
The custom UserEvent is now renamed as WakeUp, used to wake up the loop
if anything happens outside the app (a new
[custom_user_event](https://github.com/bevyengine/bevy/pull/13366/files#diff-2de8c0a8d3028d0059a3d80ae31b2bbc1cde2595ce2d317ea378fe3e0cf6ef2d)
shows this behavior.
The internal `UpdateState` has been removed and replaced internally by
the AppLifecycle. When changed, the AppLifecycle is sent as an event.
The `UpdateMode` now accepts only two values: `Continuous` and
`Reactive`, but the latter exposes 3 new properties to enable reactive
to device, user or window events. The previous `UpdateMode::Reactive` is
now equivalent to `UpdateMode::reactive()`, while
`UpdateMode::ReactiveLowPower` to `UpdateMode::reactive_low_power()`.
The `ApplicationLifecycle` has been renamed as `AppLifecycle`, and now
contains the possible values of the application state inside the event
loop:
* `Idle`: the loop has not started yet
* `Running` (previously called `Started`): the loop is running
* `WillSuspend`: the loop is going to be suspended
* `Suspended`: the loop is suspended
* `WillResume`: the loop is going to be resumed
Note: the `Resumed` state has been removed since the resumed app is just
running.
Finally, now that `winit` enables this, it extends the `WinitPlugin` to
support custom events.
## Test platforms
- [x] Windows
- [x] MacOs
- [x] Linux (x11)
- [x] Linux (Wayland)
- [x] Android
- [x] iOS
- [x] WASM/WebGPU
- [x] WASM/WebGL2
## Outstanding issues / regressions
- [ ] iOS: build failed in CI
- blocking, but may just be flakiness
- [x] Cross-platform: when the window is maximised, changes in the scale
factor don't apply, to make them apply one has to make the window
smaller again. (Re-maximising keeps the updated scale factor)
- non-blocking, but good to fix
- [ ] Android: it's pretty easy to quickly open and close the app and
then the music keeps playing when suspended.
- non-blocking but worrying
- [ ] Web: the application will hang when switching tabs
- Not new, duplicate of https://github.com/bevyengine/bevy/issues/13486
- [ ] Cross-platform?: Screenshot failure, `ERROR present_frames:
wgpu_core::present: No work has been submitted for this frame before`
taking the first screenshot, but after pressing space
- non-blocking, but good to fix
---------
Co-authored-by: François <francois.mockers@vleue.com>
# Objective
- Fixes#13192 .
- It is not possible to specify the path of the file and the subasset in
it in one string slice, if there is a hash in the file name, because
hash is separator between filename and subasset, so they must be
separated explicitly
## Solution
- Improved documentation for AssetServer::load.
---------
Co-authored-by: BD103 <59022059+BD103@users.noreply.github.com>
# Objective
- Using multiple raster passes to generate the depth pyramid is
extremely slow
- Pulling data from the source image is the largest bottleneck, it's
important to sample in a cache-aware pattern
- Barriers and pipeline drain between the raster passes is the second
largest bottleneck
- Each separate RenderPass on the CPU is _really_ expensive
## Solution
- Port [FidelityFX SPD](https://gpuopen.com/fidelityfx-spd) to WGSL,
replacing meshlet's existing multiple raster passes with a ~~single~~
two compute dispatches. Lack of coherent buffers means we have to do the
the last 64x64 tile from mip 7+ in a separate dispatch to ensure the mip
6 writes were flushed :(
- Workgroup shared memory version only at the moment, as the subgroup
operation is blocked by our upgrade to wgpu 0.20 #13186
- Don't enforce a power-of-2 depth pyramid texture size, simply scaling
by 0.5 is fine
# Objective
- Add motion vector support to the skybox
- This fixes the last remaining "gap" to complete the motion blur
feature
## Solution
- Add a pipeline for the skybox to write motion vectors to the prepass
## Testing
- Used examples to test motion vectors using motion blur
https://github.com/bevyengine/bevy/assets/2632925/74c0778a-7e77-4e68-8111-05791e4bfdd2
---------
Co-authored-by: Patrick Walton <pcwalton@mimiga.net>
# Objective
- Adopted from #13528.
- `rodio` released 0.18! While we are working on migrating away from it
and towards `kira`, it is still good to keep our dependencies
up-to-date.
## Solution
- Update `Cargo.toml` to depend on `rodio` 0.18.
- #13528 was failing because it didn't update `rodio` for
`wasm32-unknown-unknown` too.
## Testing
- The CI should catch any errors here, but you can also run an audio
example if you want like `spatial_audio_2d`.
---
## Changelog
- Updated `rodio` to 0.18.
---------
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
# Objective
Prerequisite to #13579.
Combine separate `Substates` transition systems to centralize transition
logic and exert more control over it.
## Solution
Originally the transition happened in 2 stages:
- `apply_state_transition` in `ManualTransitions` handled `NextState`,
- closure system in `DependentTransitions` handled parent-related
changes, insertion and deletion of the substate.
Now:
- Both transitions are processed in a single closure system during
`DependentTransitions`.
- Since `Substates` no longer use `ManualTransitions`, it's been renamed
to `RootTransitions`. Only root states use it.
- When `Substates` state comes into existence, it will try to initialize
from `NextState` and fallback to `should_exist` result.
- Remove `apply_state_transition` from public API.
Consequentially, removed the possibility of multiple
`StateTransitionEvent`s when both transition systems fire in a single
frame.
## Changelog
- Renamed `ManualTransitions` to `RootTransitions`.
- `Substates` will initialize their value with `NextState` if available
and fallback to `should_exist` result.
## Migration Guide
- `apply_state_transition` is no longer publicly available, run the
`StateTransition` schedule instead.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- The current version of the `meshopt` dependency is incorrect, as
`bevy_pbr` uses features introduced in `meshopt` `0.2.1`
- This causes errors like this when only `meshopt` `0.2` is present in
`Cargo.lock`:
```
error[E0432]: unresolved imports
`meshopt::ffi::meshopt_optimizeMeshlet`, `meshopt::simplify_scale`
--> crates\bevy_pbr\src\meshlet\from_mesh.rs:10:27
|
10 | ffi::{meshopt_Bounds, meshopt_optimizeMeshlet},
| ^^^^^^^^^^^^^^^^^^^^^^^
| no `meshopt_optimizeMeshlet` in `ffi`
| help: a similar name exists in the module: `meshopt_optimizeOverdraw`
11 | simplify, simplify_scale, Meshlets, SimplifyOptions,
VertexDataAdapter,
| ^^^^^^^^^^^^^^ no `simplify_scale` in the root
```
## Solution
- Specify the actual minimum version of `meshopt` that `bevy_pbr`
requires
# Objective
Prerequisite to #13579.
Make state transition schedule running simpler.
## Solution
- Remove `should_run_transition` which read the latest event and
fake-fire an event for the startup transitions (e.g. startup
`OnEnter()`).
- Account for startup event, by actually emitting an event when adding
states to `App`.
- Replace `should_run_transition` with `last_transition`, which is a
light wrapper over `EventReader::read().last()`.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
Fixes#13606.
Also Fixes#13614.
## Solution
Added the missing trait impls, and made `gizmos.arc_2d()` work with a
counter-clockwise angle.
## Testing
- Updated the render_primitives example, and it works.
# 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>
# Objective
- Fixes#13500
- Images that are `RenderAssetUsages::RENDER_WORLD` don't free their
memory when they are no longer used
## Solution
- Remove their bind group when the handles are unused
This is a revamped equivalent to #9902, though it shares none of the
code. It handles all special cases that I've tested correctly.
The overall technique consists of double-buffering the joint matrix and
morph weights buffers, as most of the previous attempts to solve this
problem did. The process is generally straightforward. Note that, to
avoid regressing the ability of mesh extraction, skin extraction, and
morph target extraction to run in parallel, I had to add a new system to
rendering, `set_mesh_motion_vector_flags`. The comment there explains
the details; it generally runs very quickly.
I've tested this with modified versions of the `animated_fox`,
`morph_targets`, and `many_foxes` examples that add TAA, and the patch
works. To avoid bloating those examples, I didn't add switches for TAA
to them.
Addresses points (1) and (2) of #8423.
## Changelog
### Fixed
* Motion vectors, and therefore TAA, are now supported for meshes with
skins and/or morph targets.
# Objective
Adds capability to clear all components on an entity without de-spawning
said entity.
## Testing
The function calls `remove_by_id` on every component in the entity
archetype - wasn't sure if it's worth going out of our way to create a
test for this considering `remove_by_id` is already unit tested.
---
## Changelog
Added `clear` function to `EntityWorldMut` which removes all components
on an entity.
## Migration Guide
N/A
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# 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.
# Objective
Part of https://github.com/bevyengine/bevy/issues/13529
Helps https://github.com/bevyengine/bevy/pull/13533
Splitting up `bevy_transform` makes it easier to selectively include or
exclude parts of it in such a way that it's possible to include only a
small part with a small dependency tree.
## Solution
Make the crate more modular.
---------
Signed-off-by: Torstein Grindvik <torstein.grindvik@muybridge.com>
Co-authored-by: Torstein Grindvik <torstein.grindvik@muybridge.com>
# Objective
Unifies the naming convention between `StateTransitionEvent<S>` and
transition schedules.
## Migration Guide
- `StateTransitionEvent<S>` and `OnTransition<S>` schedule had their
fields renamed to `exited` and `entered` to match schedules.
# Objective
- Allow using image assets that don't have an extensions and whose
format is unknown. This is useful for loading images from arbitrary HTTP
URLs.
## Solution
- This PR adds a new variant to `ImageFormatSetting` called `Guess`. The
loader will use `image::guess_format` to deduce the format based on the
content of the file.
## Testing
- I locally removed the extension of bevy_bird_dark, and ran a modified
version of the `sprite` example:
```rust
//! Displays a single [`Sprite`], created from an image.
use bevy::{
prelude::*,
render::texture::{ImageFormatSetting, ImageLoaderSettings},
};
fn main() {
App::new()
.add_plugins(DefaultPlugins)
.add_systems(Startup, setup)
.run();
}
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
commands.spawn(Camera2dBundle::default());
commands.spawn(SpriteBundle {
texture: asset_server
.load_with_settings("branding/bevy_bird_dark", |s: &mut ImageLoaderSettings| {
s.format = ImageFormatSetting::Guess
}),
..default()
});
}
```
## Changelog
### Added
`ImageFormatSetting::Guess` to automatically guess the format of an
image asset from its content.
Co-authored-by: François Mockers <mockersf@gmail.com>
# Objective
- Fixes https://github.com/bevyengine/bevy/issues/13155
- fixes https://github.com/bevyengine/bevy/issues/13517
- Supercedes https://github.com/bevyengine/bevy/pull/13381
- Requires https://github.com/DioxusLabs/taffy/pull/661
## Solution
- Taffy has been updated to:
- Apply size styles to absolutely positioned children
- Pass the node's `Style` through to the measure function
- Bevy's image measure function has been updated to make use of this
style information
## Notes
- This is currently using a git version of Taffy. If this is tested as
fixing the issue then we can turn that into a Taffy 0.5 release (this
would be the only change between Taffy 0.4 and Taffy 0.5 so upgrading is
not expected to be an issue)
- This implementation may not be completely correct. I would have
preferred to extend Taffy's gentest infrastructure to handle images and
used that to nail down the correct behaviour. But I don't have time for
that atm so we'll have to iterate on this in future. This PR at least
puts that under Bevy's control.
## Testing
- I manually tested the game_menu_example (from
https://github.com/bevyengine/bevy/issues/13155)
- More testing is probably merited
---
## Changelog
No changelog should be required as it fixes a regression on `main` that
was not present in bevy 0.13. The changelog for "Taffy upgrade" may want
to be changed from 0.4 to 0.5 if this change gets merged.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: François Mockers <francois.mockers@vleue.com>
# Objective
In #13343, `WorldQuery::get_state` was constrained from `&World` as the
argument to `&Components`, but `WorldQuery::init_state` hasn't yet been
changed from `&mut World` to match.
Fixes#13358
## Solution
Create a wrapper around `&mut Components` and `&mut Storages` that can
be obtained from `&mut World` with a `component_initializer` method.
This new `ComponentInitializer` re-exposes the API on `&mut Components`
minus the `&mut Storages` parameter where it was present. For the
`&Components` API, it simply derefs to its `components` field.
## Changelog
### Added
The `World::component_initializer` method.
The `ComponentInitializer` struct that re-exposes `Components` API.
### Changed
`WorldQuery::init_state` now takes `&mut ComponentInitializer` instead
of `&mut World`.
## Migration Guide
Instead of passing `&mut World` to `WorldQuery::init_state` directly,
pass in a mutable reference to the struct returned from
`World::component_initializer`.
# Objective
- Fixes#13038
## Solution
- Disable gpu preprocessing when feature
`SAMPLED_TEXTURE_AND_STORAGE_BUFFER_ARRAY_NON_UNIFORM_INDEXING` is not
available
## Testing
- Tested on android device that used to crash
# Objective
- Motion blur does not currently work with skyboxes or anything else
that does not write to depth.
## Solution
- When computing blur, include fragments with no depth, as long as they
are onscreen.
## Testing
- Tested with the examples - the motion_blur example uncovered a bug
with this fix, where offscreen pixels where now being sampled and
causing artifacts.
- Attached example showing the skybox being sampled in the blur (note
the feathering on edges):
https://github.com/bevyengine/bevy/assets/2632925/fc14b0c1-2394-46a5-a2b9-a859efcd23ef
# Objective
- since #13523, UI is broken in WebGPU
```
Compilation log for [Invalid ShaderModule (unlabeled)]:
1 error(s) generated while compiling the shader:
:108:27 error: 'textureSample' must only be called from uniform control flow
let texture_color_1 = textureSample(sprite_texture, sprite_sampler, in_2.uv);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
:151:19 note: called by 'draw_background' from 'fragment'
let _e5 = draw_background(in);
^^^^^^^^^^^^^^^^^^^
:147:5 note: control flow depends on possibly non-uniform value
if _e3 {
^^
:146:23 note: parameter 'in' of 'fragment' may be non-uniform
let _e3 = enabled(in.flags, BORDER);
```
## Solution
- call `textureSample` from outside the if. both branches are using the
same parameters
# Objective
- In particularly dark scenes, auto-exposure would lead to an unexpected
darkening of the view.
- Fixes#13446.
## Solution
The average luminance should default to something else than 0.0 instead,
when there are no samples. We set it to `settings.min_log_lum`.
## Testing
I was able to reproduce the problem on the `auto_exposure` example by
setting the point light intensity to 2000 and looking into the
right-hand corner. There was a sudden darkening.
Now, the discontinuity is gone.
---------
Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com>
Co-authored-by: Bram Buurlage <brambuurlage@gmail.com>
# Objective
- The Gltf loader has a ton of features to load parts of an asset that
are essentially undocumented.
## Solution
- Add some docs to explain some of those features
- The docs is definitely inspired by the bevy cheatbook page on the
subject but it goes in a lot less details
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: François Mockers <francois.mockers@vleue.com>
Currently, either an `EntityRef` or `EntityMut` is required in order to
reflect a component on an entity. This can, however, be generalized to
`FilteredEntityRef` and `FilteredEntityMut`, which are versions of
`EntityRef` and `EntityMut` that restrict the components that can be
accessed. This is useful because dynamic queries yield
`FilteredEntityRef` and `FilteredEntityMut` rows when iterated over.
This commit changes `ReflectComponent::contains()`,
`ReflectComponent::reflect()`, and `ReflectComponent::reflect_mut()` to
take an `Into<FilteredEntityRef>` (in the case of `contains()` and
`reflect()`) and `Into<FilteredEntityMut>` (in the case of
`reflect_mut()`). Fortunately, `EntityRef` and `EntityMut` already
implement the corresponding trait, so nothing else has to be done to the
public API. Note that in order to implement
`ReflectComponent::reflect_mut()` properly, an additional method
`FilteredEntityMut::into_mut()` was required, to match the one on
`EntityMut`.
I ran into this when attempting to implement `QUERY` in the Bevy Remote
Protocol when trying to iterate over rows of dynamic queries and fetch
the associated components without unsafe code. There were other
potential ways to work around this problem, but they required either
reimplementing the query logic myself instead of using regular Bevy
queries or storing entity IDs and then issuing another query to fetch
the associated `EntityRef`. Both of these seemed worse than just
improving the `reflect()` function.
## Migration Guide
* `ReflectComponent::contains`, `ReflectComponent::reflect`, and
`ReflectComponent::reflect_mut` now take `FilteredEntityRef` (in the
case of `contains()` and `reflect()`) and `FilteredEntityMut` (in the
case of `reflect_mut()`) parameters. `FilteredEntityRef` and
`FilteredEntityMut` have very similar APIs to `EntityRef` and
`EntityMut` respectively, but optionally restrict the components that
can be accessed.
# Objective
- `FilteredEntity{Ref,Mut}` various `get` methods never checked that the
given component was present on the entity, only the access allowed
reading/writing them, which is always the case when it is constructed
from a `EntityRef`/`EntityMut`/`EntityWorldMut` (and I guess can also
happen with queries containing `Option<T>` that get transmuted).
- In those cases the various `get` methods were calling
`debug_checked_unwrap` on `None`s, which is UB when debug assertions are
not enabled;
- The goal is thus to fix this soundness issue.
## Solution
- Don't call `debug_checked_unwrap` on those `None` and instead
`flatten` them.
## Testing
- This PR includes regression tests for each combination of
`FilteredEntityRef`/`FilteredEntityMut` and component
present/not-present. The two tests for the not-present cases fail on
`main` but success with this PR changes.
# Objective
- Prevent the case where a hook/observer is triggered but the source
entity/component no longer exists
## Solution
- Re-order command application such that all hooks/observers that are
notified will run before any have a chance to invalidate the result.
## Testing
Updated relevant tests in `bevy_ecs`, all other tests pass.
---------
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
Co-authored-by: Mike Hsu <mike.hsu@gmail.com>
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Fixes#13118
If you use `Sprite` or `Mesh2d` and create `Camera` with
* hdr=false
* any tonemapper
You would get
```
wgpu error: Validation Error
Caused by:
In Device::create_render_pipeline
note: label = `sprite_pipeline`
Error matching ShaderStages(FRAGMENT) shader requirements against the pipeline
Shader global ResourceBinding { group: 0, binding: 19 } is not available in the pipeline layout
Binding is missing from the pipeline layout
```
Because of missing tonemapping LUT bindings
## Solution
Add missing bindings for tonemapping LUT's to `SpritePipeline` &
`Mesh2dPipeline`
## Testing
I checked that
* `tonemapping`
* `color_grading`
* `sprite_animations`
* `2d_shapes`
* `meshlet`
* `deferred_rendering`
examples are still working
2d cases I checked with this code:
```
use bevy::{
color::palettes::css::PURPLE, core_pipeline::tonemapping::Tonemapping, prelude::*,
sprite::MaterialMesh2dBundle,
};
fn main() {
App::new()
.add_plugins(DefaultPlugins)
.add_systems(Startup, setup)
.add_systems(Update, toggle_tonemapping_method)
.run();
}
fn setup(
mut commands: Commands,
mut meshes: ResMut<Assets<Mesh>>,
mut materials: ResMut<Assets<ColorMaterial>>,
asset_server: Res<AssetServer>,
) {
commands.spawn(Camera2dBundle {
camera: Camera {
hdr: false,
..default()
},
tonemapping: Tonemapping::BlenderFilmic,
..default()
});
commands.spawn(MaterialMesh2dBundle {
mesh: meshes.add(Rectangle::default()).into(),
transform: Transform::default().with_scale(Vec3::splat(128.)),
material: materials.add(Color::from(PURPLE)),
..default()
});
commands.spawn(SpriteBundle {
texture: asset_server.load("asd.png"),
..default()
});
}
fn toggle_tonemapping_method(
keys: Res<ButtonInput<KeyCode>>,
mut tonemapping: Query<&mut Tonemapping>,
) {
let mut method = tonemapping.single_mut();
if keys.just_pressed(KeyCode::Digit1) {
*method = Tonemapping::None;
} else if keys.just_pressed(KeyCode::Digit2) {
*method = Tonemapping::Reinhard;
} else if keys.just_pressed(KeyCode::Digit3) {
*method = Tonemapping::ReinhardLuminance;
} else if keys.just_pressed(KeyCode::Digit4) {
*method = Tonemapping::AcesFitted;
} else if keys.just_pressed(KeyCode::Digit5) {
*method = Tonemapping::AgX;
} else if keys.just_pressed(KeyCode::Digit6) {
*method = Tonemapping::SomewhatBoringDisplayTransform;
} else if keys.just_pressed(KeyCode::Digit7) {
*method = Tonemapping::TonyMcMapface;
} else if keys.just_pressed(KeyCode::Digit8) {
*method = Tonemapping::BlenderFilmic;
}
}
```
---
## Changelog
Fix the bug which led to the crash when user uses any tonemapper without
hdr for rendering sprites and 2d meshes.
# Objective
- Fixes#13521
## Solution
Set `ambient_intensity` to 0.0 in volumetric_fog example.
I chose setting it explicitly over changing the default in order to make
it clear that this needs to be set depending on whether you have an
`EnvironmentMapLight`. See documentation for `ambient_intensity` and
related members.
## Testing
- Run the volumetric_fog example and notice how the light shown in
#13521 is not there anymore, as expected.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- #13418 broke volumetric fog
```
wgpu error: Validation Error
Caused by:
In a RenderPass
note: encoder = `<CommandBuffer-(2, 4, Metal)>`
In a set_bind_group command
note: bind group = `mesh_view_bind_group`
Bind group 0 expects 5 dynamic offsets. However 4 dynamic offsets were provided.
```
## Solution
- add ssr offset to volumetric fog bind group
# Objective
Fix#13530 (just realized creating an issue was unnecessary since it's a
super simple fix)
## Solution
Add a cfg feature attribute
## Testing
Compiles fine now
# Objective
Fixes#13535.
## Solution
I implemented `Reflect` for close to all math types now, except for some
types that it would cause issues (like some boxed types).
## Testing
- Everything seems to still build, will await CI though.
---
## Changelog
- Made close to all math types implement `Reflect`.
# Objective
- Fixes#13503
- Fix other various bugs I noticed while debugging above issue.
## Solution
- Change the antialiasing(AA) method. It was using fwidth which is the
derivative between pixels, but there were a lot of artifacts being added
from this. So just use the sdf value. This aa method probably isn't as
smooth looking, but better than having artifacts. Below is a
visualization of the fwidth.
- Use the internal sdf for drawing the background instead of the
external sdf and extract the border for these type of nodes. This fixed
2 bugs, one with the background coloring the AA pixels on the edge of
rounded borders. And also allows for the border to use a transparent
color.
- Don't extract borders if all the widths are zero.
## Testing
- played a bunch with the example in the linked issue.
This PR:
Main:
- ran the `borders` and `rounded_borders` examples
---
## Changelog
- Fixed various antialiasing issues to do with rounded ui borders.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Andreas Weibye <13300393+Weibye@users.noreply.github.com>
# Objective
Fixes#13456
## Solution
Moved `bevy_math`'s `Reflect` impls from `bevy_reflect` to `bevy_math`.
### Quick note
I accidentally used the same commit message while resolving a merge
conflict (first time I had to resolve a conflict). Sorry about that.
# Objective
Fixes#13427.
## Solution
I changed the traits, and updated all usages.
## Testing
The `render_primitives` example still works perfectly.
---
## Changelog
- Made `gizmos.primitive_2d()` and `gizmos.primitive_3d()` take the
primitives by ref.
## Migration Guide
- Any usages of `gizmos.primitive_2d()` and/or `gizmos.primitive_3d()`
need to be updated to pass the primitive in by reference.
This commit, a revamp of #12959, implements screen-space reflections
(SSR), which approximate real-time reflections based on raymarching
through the depth buffer and copying samples from the final rendered
frame. This patch is a relatively minimal implementation of SSR, so as
to provide a flexible base on which to customize and build in the
future. However, it's based on the production-quality [raymarching code
by Tomasz
Stachowiak](https://gist.github.com/h3r2tic/9c8356bdaefbe80b1a22ae0aaee192db).
For a general basic overview of screen-space reflections, see
[1](https://lettier.github.io/3d-game-shaders-for-beginners/screen-space-reflection.html).
The raymarching shader uses the basic algorithm of tracing forward in
large steps, refining that trace in smaller increments via binary
search, and then using the secant method. No temporal filtering or
roughness blurring, is performed at all; for this reason, SSR currently
only operates on very shiny surfaces. No acceleration via the
hierarchical Z-buffer is implemented (though note that
https://github.com/bevyengine/bevy/pull/12899 will add the
infrastructure for this). Reflections are traced at full resolution,
which is often considered slow. All of these improvements and more can
be follow-ups.
SSR is built on top of the deferred renderer and is currently only
supported in that mode. Forward screen-space reflections are possible
albeit uncommon (though e.g. *Doom Eternal* uses them); however, they
require tracing from the previous frame, which would add complexity.
This patch leaves the door open to implementing SSR in the forward
rendering path but doesn't itself have such an implementation.
Screen-space reflections aren't supported in WebGL 2, because they
require sampling from the depth buffer, which Naga can't do because of a
bug (`sampler2DShadow` is incorrectly generated instead of `sampler2D`;
this is the same reason why depth of field is disabled on that
platform).
To add screen-space reflections to a camera, use the
`ScreenSpaceReflectionsBundle` bundle or the
`ScreenSpaceReflectionsSettings` component. In addition to
`ScreenSpaceReflectionsSettings`, `DepthPrepass` and `DeferredPrepass`
must also be present for the reflections to show up. The
`ScreenSpaceReflectionsSettings` component contains several settings
that artists can tweak, and also comes with sensible defaults.
A new example, `ssr`, has been added. It's loosely based on the
[three.js ocean
sample](https://threejs.org/examples/webgl_shaders_ocean.html), but all
the assets are original. Note that the three.js demo has no screen-space
reflections and instead renders a mirror world. In contrast to #12959,
this demo tests not only a cube but also a more complex model (the
flight helmet).
## Changelog
### Added
* Screen-space reflections can be enabled for very smooth surfaces by
adding the `ScreenSpaceReflections` component to a camera. Deferred
rendering must be enabled for the reflections to appear.
# Objective
- We use
[`ci_testing`](https://dev-docs.bevyengine.org/bevy/dev_tools/ci_testing/index.html)
to specify per-example configuration on when to take a screenshot, when
to exit, etc.
- In the future more features may be added, such as #13512. To support
this growth, `ci_testing` should be easier to read and maintain.
## Solution
- Convert `ci_testing.rs` into the folder `ci_testing`, splitting the
configuration and systems into `ci_testing/config.rs` and
`ci_testing/systems.rs`.
- Convert `setup_app` into the plugin `CiTestingPlugin`. This new plugin
is added to both `DefaultPlugins` and `MinimalPlugins`.
- Remove `DevToolsPlugin` from `MinimalPlugins`, since it was only used
for CI testing.
- Clean up some code, add many comments, and add a few unit tests.
## Testing
The most important part is that this still passes all of the CI
validation checks (merge queue), since that is when it will be used the
most. I don't think I changed any behavior, so it should operate the
same.
You can also test it locally using:
```shell
# Run the breakout example, enabling `bevy_ci_testing` and loading the configuration used in CI.
CI_TESTING_CONFIG=".github/example-run/breakout.ron" cargo r --example breakout -F bevy_ci_testing
```
---
## Changelog
- Added `CiTestingPlugin`, which is split off from `DevToolsPlugin`.
- Removed `DevToolsPlugin` from `MinimalPlugins`.
## Migration Guide
Hi maintainers! I believe `DevToolsPlugin` was added within the same
release as this PR, so I don't think a migration guide is needed.
`DevToolsPlugin` is no longer included in `MinimalPlugins`, so you will
need to remove it manually.
```rust
// Before
App::new()
.add_plugins(MinimalPlugins)
.run();
// After
App::new()
.add_plugins(MinimalPlugins)
.add_plugins(DevToolsPlugin)
.run();
```
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: François Mockers <francois.mockers@vleue.com>
# Objective
- Create a new 2D primitive, Rhombus, also knows as "Diamond Shape"
- Simplify the creation and handling of isometric projections
- Extend Bevy's arsenal of 2D primitives
## Testing
- New unit tests created in bevy_math/ primitives and bev_math/ bounding
- Tested translations, rotations, wireframe, bounding sphere, aabb and
creation parameters
---------
Co-authored-by: Luís Figueiredo <luispcfigueiredo@tecnico.ulisboa.pt>
# Objective
in bevy_pbr we check for `shader_format_glsl` before using binding
arrays due to a naga->glsl limitation. but the feature is currently only
enabled for the bevy_render crate.
fix#13232
## Solution
enable the feature for bevy_pbr too.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Added a Grey trait to allow colors to create a generic "grey" color.
This currently assumes the color spaces follow the same gradient, which
I'm pretty sure isn't true, but it should make a "grey-ish" color
relative to the provided intensity.
# Objective
- Implements #13206
## Solution
- A small `Grey` trait was added and implemented for the common color
kinds.
## Testing
- Currently untested, unit tests exposed the non-linear relation between
colors. I am debating adding an example to show this, as I have no idea
what color space represents what relation of grey, and I figure others
may be similarly confused.
## Changelog
- The `Grey` trait was added, and the corresponding `grey`
## BREAKING CHANGES
The const qualifier for LinearRGBA::gray was removed (the symbol still
exists via a trait, it's just not const anymore)
# Objective
The `ConicalFrustum` primitive should support meshing.
## Solution
Implement meshing for the `ConicalFrustum` primitive. The implementation
is nearly identical to `Cylinder` meshing, but supports two radii.
The default conical frustum is equivalent to a cone with a height of 1
and a radius of 0.5, truncated at half-height.
# Objective
This is just cleanup; we've got some more renderable gizmos and
primitives now that hadn't been added to this example, so let's add
them.
## Solution
In the `render_primitives` example:
- Added `Triangle3d` mesh
- Wrote `primitive_3d` gizmo impl for `Triangle3d` and added the gizmo
- Added `Tetrahedron` mesh and gizmo
I also made the 2d triangle bigger, since it was really small.
## Testing
You can just run the example to see that everything turned out all
right.
## Other
Feel free to let me know if there are other primitives that I missed;
I'm happy to tack them onto this PR.
# Objective
I'm reading some of the rendering code for the first time; and using
this opportunity to flesh out some docs for the parts that I did not
understand.
rather than a questionable design choice is not a breaking change.
---------
Co-authored-by: BD103 <59022059+BD103@users.noreply.github.com>
# Objective
- I wanted to store a Ptr in a struct of mine that has a
`#[derive(Debug)]` and I noticed that the Ptrs don't implement Debug,
even though the underlying `NonNull<u8>` does
## Solution
- Add `#[derive(Debug)]`
# Objective
Adopted #11748
## Solution
I've rebased on main to fix the merge conflicts. ~~Not quite ready to
merge yet~~
* Clippy is happy and the tests are passing, but...
* ~~The new shapes in `examples/2d/2d_shapes.rs` don't look right at
all~~ Never mind, looks like radians and degrees just got mixed up at
some point?
* I have updated one doc comment based on a review in the original PR.
---------
Co-authored-by: Alexis "spectria" Horizon <spectria.limina@gmail.com>
Co-authored-by: Alexis "spectria" Horizon <118812919+spectria-limina@users.noreply.github.com>
Co-authored-by: Joona Aalto <jondolf.dev@gmail.com>
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Ben Harper <ben@tukom.org>
# Objective
Adopted #12659.
Resolved the merge conflicts on #12659;
* I merged the `triangle_tests` added by this PR and by #13020.
* I moved the [commented out
code](https://github.com/bevyengine/bevy/pull/12659#discussion_r1536640427)
from the original PR into a separate test with `#[should_panic]`.
---------
Co-authored-by: Vitor Falcao <vitorfhc@protonmail.com>
Co-authored-by: Ben Harper <ben@tukom.org>
# Objective
Supercedes #12881 . Added a simple implementation that allows the user
to react to multiple asset loads both synchronously and asynchronously.
## Solution
Added `load_acquire`, that holds an item and drops it when loading is
finished or failed.
When used synchronously
Hold an `Arc<()>`, check for `Arc::strong_count() == 1` when all loading
completed.
When used asynchronously
Hold a `SemaphoreGuard`, await on `acquire_all` for completion.
This implementation has more freedom than the original in my opinion.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Zachary Harrold <zac@harrold.com.au>
# Objective
The `enum_utility` module contains the `get_variant_constructors`
function, which is used to generate token streams for constructing
enums. It's used for the `FromReflect::from_reflect` implementation and
the `Reflect::try_apply` implementation.
Due to the complexity of enums, this function is understandably a little
messy and difficult to extend.
## Solution
Clean up the `enum_utility` module.
Now "clean" is a bit subjective. I believe my solution is "cleaner" in
that the logic to generate the tokens are strictly coupled with the
intended usage. Because of this, `try_apply` is also no longer strictly
coupled with `from_reflect`.
This makes it easier to extend with new functionality, which is
something I'm doing in a future unrelated PR that I have based off this
one.
## Testing
There shouldn't be any testing required other than ensuring that the
project still builds and that CI passes.
# Objective
The current query iterators cannot be used in positions with a `Debug`
bound.
F.e. when they are packaged in `Result` in the error position, `expect`
cannot be called on them.
Required for `QueryManyIter::entities_all_unique` in #13477.
## Solution
Add simple `Debug` impls that print the query iterator names.
## Changelog
`QueryIter`, `QueryManyIter`, `QueryCombinationIter`, and
`QuerySortedIter` now implement `Debug`.
# Objective
While reviewing the other open hooks-related PRs, I found that the docs
on the `ComponentHooks` struct itself didn't give enough information
about how and why the feature could be used.
## Solution
1. Clean up the docs to add additional context.
2. Add a doc test demonstrating simple usage.
## Testing
The doc test passes locally.
---------
Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com>
I am unsure if this needs changing, so let me know if I need to change
anything else.
# Objective
Fixes#13461.
## Solution
I applied the changes as suggested in the issue, and updated the doc
comments accordingly
## Testing
I don't think this needs too much testing, but there are no `cargo test`
failures.
# Objective
Add random sampling for the `Annulus` primitive. This is part of ongoing
work to bring the various `bevy_math` primitives to feature parity.
## Solution
`Annulus` implements `ShapeSample`. Boundary sampling is implemented in
the obvious way, and interior sampling works exactly as in the
implementation for `Circle`, using the fact that the square of the
radius should be taken uniformly from between r^2 and R^2, where r and R
are the inner and outer radii respectively.
## Testing
I generated a bunch of random points and rendered them. Here's 1000
points on the interior of the default annulus:
<img width="1440" alt="Screenshot 2024-05-22 at 8 01 34 AM"
src="https://github.com/bevyengine/bevy/assets/2975848/19c31bb0-edba-477f-b247-2b12d854afae">
This looks kind of weird around the edges, but I verified that they're
all actually inside the annulus, so I assume it has to do with the fact
that the rendered circles have some radius.
Stolen from #12835.
# Objective
Sometimes you want to sample a whole bunch of points from a shape
instead of just one. You can write your own loop to do this, but it's
really more idiomatic to use a `rand`
[`Distribution`](https://docs.rs/rand/latest/rand/distributions/trait.Distribution.html)
with the `sample_iter` method. Distributions also support other useful
things like mapping, and they are suitable as generic items for
consumption by other APIs.
## Solution
`ShapeSample` has been given two new automatic trait methods,
`interior_dist` and `boundary_dist`. They both have similar signatures
(recall that `Output` is the output type for `ShapeSample`):
```rust
fn interior_dist(self) -> impl Distribution<Self::Output>
where Self: Sized { //... }
```
These have default implementations which are powered by wrapper structs
`InteriorOf` and `BoundaryOf` that actually implement `Distribution` —
the implementations effectively just call `ShapeSample::sample_interior`
and `ShapeSample::sample_boundary` on the contained type.
The upshot is that this allows iteration as follows:
```rust
// Get an iterator over boundary points of a rectangle:
let rectangle = Rectangle::new(1.0, 2.0);
let boundary_iter = rectangle.boundary_dist().sample_iter(rng);
// Collect a bunch of boundary points at once:
let boundary_pts: Vec<Vec2> = boundary_iter.take(1000).collect();
```
Alternatively, you can use `InteriorOf`/`BoundaryOf` explicitly to
similar effect:
```rust
let boundary_pts: Vec<Vec2> = BoundaryOf(rectangle).sample_iter(rng).take(1000).collect();
```
---
## Changelog
- Added `InteriorOf` and `BoundaryOf` distribution wrapper structs in
`bevy_math::sampling::shape_sampling`.
- Added `interior_dist` and `boundary_dist` automatic trait methods to
`ShapeSample`.
- Made `shape_sampling` module public with explanatory documentation.
---
## Discussion
### Design choices
The main point of interest here is just the choice of `impl
Distribution` instead of explicitly using `InteriorOf`/`BoundaryOf`
return types for `interior_dist` and `boundary_dist`. The reason for
this choice is that it allows future optimizations for repeated sampling
— for example, instead of just wrapping the base type,
`interior_dist`/`boundary_dist` could construct auxiliary data that is
held over between sampling operations.
# Objective
Allow the `Tetrahedron` primitive to be used for mesh generation. This
is part of ongoing work to bring unify the capabilities of `bevy_math`
primitives.
## Solution
`Tetrahedron` implements `Meshable`. Essentially, each face is just
meshed as a `Triangle3d`, but first there is an inversion step when the
signed volume of the tetrahedron is negative to ensure that the faces
all actually point outward.
## Testing
I loaded up some examples and hackily exchanged existing meshes with the
new one to see that it works as expected.
# Objective
This is a long-standing bug that I have experienced since many versions
of Bevy ago, possibly forever. Today I finally wanted to report it, but
the fix was so easy that I just went and fixed it. :)
The problem is that 2D graphics looks blurry at odd-sized window
resolutions. This is with the **default** 2D camera configuration! The
issue will also manifest itself with any Orthographic Projection with
`ScalingMode::WindowSize` where the viewport origin is not at one of the
corners, such as the default where the origin point is at the center.
The issue happens because the Bevy orthographic projection origin point
is specified as a fraction to be multiplied by the size. For example,
the default (origin at center) is `(0.5, 0.5)`. When this value is
multiplied by the window size, it can result in fractional values for
the actual origin of the projection, thus placing the camera "between
pixels" and misaligning the entire pixel grid.
With the default value, this happens at odd-numbered window resolutions.
It is very easy to reproduce the issue by running any Bevy 2D app with a
resizable window, and slowly resizing the window pixel by pixel. As you
move the mouse to resize the window, you can see how the 2D graphics
inside the window alternate between "crisp, blurry, crisp, blurry, ...".
If you change the projection's origin to be at the corner (say, `(0.0,
0.0)`) and run the app again, the graphics always looks crisp,
regardless of window size.
Here are screenshots from **before** this PR, to illustrate the issue:
Even window size:
Odd window size:
## Solution
The solution is easy: just round the computed origin values for the
projection.
To make it work reliably for the general case, I decided to:
- Only do it for `ScalingMode::WindowSize`, as it doesn't make sense for
other scaling modes.
- Round to the nearest multiple of the pixel scale, if it is not 1.0.
This ensures the "pixels" stay aligned even if scaled.
## Testing
I ran Bevy's examples as well as my own projects to ensure things look
correct. I set different values for the pixel scale to test the rounding
behavior and played around with resizing the window to verify that
everything is consistent.
---
## Changelog
Fixed:
- Orthographic projection now rounds the origin point if computed from
screen pixels, so that 2D graphics do not appear blurry at odd window
sizes.
# Objective
- Implement a general purpose mechanism for building `SystemParam`.
- Unblock the usage of dynamic queries in regular systems.
## Solution
- Implement a `SystemBuilder` type.
## Examples
Here are some simple test cases for the builder:
```rust
fn local_system(local: Local<u64>) -> u64 {
*local
}
fn query_system(query: Query<()>) -> usize {
query.iter().count()
}
fn multi_param_system(a: Local<u64>, b: Local<u64>) -> u64 {
*a + *b + 1
}
#[test]
fn local_builder() {
let mut world = World::new();
let system = SystemBuilder::<()>::new(&mut world)
.builder::<Local<u64>>(|x| *x = 10)
.build(local_system);
let result = world.run_system_once(system);
assert_eq!(result, 10);
}
#[test]
fn query_builder() {
let mut world = World::new();
world.spawn(A);
world.spawn_empty();
let system = SystemBuilder::<()>::new(&mut world)
.builder::<Query<()>>(|query| {
query.with::<A>();
})
.build(query_system);
let result = world.run_system_once(system);
assert_eq!(result, 1);
}
#[test]
fn multi_param_builder() {
let mut world = World::new();
world.spawn(A);
world.spawn_empty();
let system = SystemBuilder::<()>::new(&mut world)
.param::<Local<u64>>()
.param::<Local<u64>>()
.build(multi_param_system);
let result = world.run_system_once(system);
assert_eq!(result, 1);
}
```
This will be expanded as this PR is iterated.
We invoked the `extract_default_ui_camera_view` system twice: once for
2D cameras and once for 3D cameras. This was fine before moving to
resources for render phases, but, after the move to resources, the first
thing such systems do is to clear out all the entities-to-be-rendered
from the previous frame. So, if the scheduler happened to run
`extract_default_ui_camera_view::<Camera2d>` first, then all the UI
elements that it queued would be overwritten by the
`extract_default_ui_camera_view::<Camera3d>` system, or vice versa. The
ordering dependence is the reason why this problem was intermittent.
This commit fixes the problem by merging the two systems into one
systems, using an `Or` query filter.
## Migration Guide
* The `bevy_ui::render::extract_default_ui_camera_view` system is no
longer parameterized over the specific type of camera and is hard-wired
to either `Camera2d` or `Camera3d` components.
# Objective
- Fixes#13092.
## Solution
- Renamed the `inset()` method in `Rect`, `IRect` and `URect` to
`inflate()`.
- Added `EMPTY` constants to all `Rect` variants, represented by corners
with the maximum numerical values for each kind.
---
## Migration Guide
- Replace `Rect::inset()`, `IRect::inset()` and `URect::inset()` calls
with `inflate()`.
# Objective
- Fixes#13412
## Solution
- Renamed `segments` in `bevy_gizmos` to `resolution` and adjusted
examples
## Migration Guide
- When working with gizmos, replace all calls to `.segments(...)` with
`.resolution(...)`
# Objective
Add interior and boundary sampling for the `Tetrahedron` primitive. This
is part of ongoing work to bring the primitives to parity with each
other in terms of their capabilities.
## Solution
`Tetrahedron` implements the `ShapeSample` trait. To support this, there
is a new public method `Tetrahedron::faces` which gets the faces of a
tetrahedron as `Triangle3d`s. There are more sophisticated ideas for
getting the faces we might want to consider in the future (e.g.
adjusting according to the orientation), but this method gives the most
mathematically straightforward answer, giving the faces the orientation
induced by the tetrahedron itself.
# Objective
Currently, a query iterator can be collected into a `Vec` and sorted,
but this can be quite unwieldy, especially when many `Component`s are
involved. The `itertools` crate helps somewhat, but the need to write a
closure over all of `QueryData`
can sometimes hurt ergonomics, anywhere from slightly to strongly. A key
extraction function only partially helps, as `sort_by_key` does not
allow returning non-`Copy` data. `sort_by` does not suffer from the
`Copy` restriction, but now the user has to write out a `cmp` function
over two `QueryData::Item`s when it could have just been handled by the
`Ord` impl for the key.
`sort` requires the entire `Iterator` Item to be `Ord`, which is rarely
usable without manual helper functionality. If the user wants to hide
away unused components with a `..` range, they need to track item tuple
order across their function. Mutable `QueryData` can also introduce
further complexity.
Additionally, sometimes users solely include `Component`s /`Entity` to
guarantee iteration order.
For a user to write a function to abstract away repeated sorts over
various `QueryData` types they use would require reaching for the
`all_tuples!` macro, and continue tracking tuple order afterwards.
Fixes https://github.com/bevyengine/bevy/issues/1470.
## Solution
Custom sort methods on `QueryIter`, which take a query lens as a generic
argument, like `transmute_lens` in `Query`.
This allows users to choose what part of their queries they pass to
their sort function calls, serving as a kind of "key extraction
function" before the sort call. F.e. allowing users to implement `Ord`
for a Component, then call `query.iter().sort::<OrdComponent>()`
This works independent of mutability in `QueryData`, `QueryData` tuple
order, or the underlying `iter/iter_mut` call.
Non-`Copy` components could also be used this way, an internal
`Arc<usize>` being an example.
If `Ord` impls on components do not suffice, other sort methods can be
used. Notably useful when combined with `EntityRef` or `EntityMut`.
Another boon from using underlying `transmute` functionality, is that
with the [allowed
transmutes](http://dev-docs.bevyengine.org/bevy/ecs/prelude/struct.Query.html#allowed-transmutes),
it is possible to sort a `Query` with `Entity` even if it wasn't
included in the original `Query`.
The additional generic parameter on the methods other than `sort` and
`sort_unstable` currently cannot be removed due to Rust limitations,
however their types can be inferred.
The new methods do not conflict with the `itertools` sort methods, as
those use the "sorted" prefix.
This is implemented barely touching existing code. That change to
existing code being that `QueryIter` now holds on to the reference to
`UnsafeWorldCell` that is used to initialize it.
A lens query is constructed with `Entity` attached at the end, sorted,
and turned into an iterator. The iterator maps away the lens query,
leaving only an iterator of `Entity`, which is used by `QuerySortedIter`
to retrieve the actual items.
`QuerySortedIter` resembles a combination of `QueryManyIter` and
`QueryIter`, but it uses an entity list that is guaranteed to contain
unique entities, and implements `ExactSizeIterator`,
`DoubleEndedIterator`, `FusedIterator` regardless of mutability or
filter kind (archetypal/non-archetypal).
The sort methods are not allowed to be called after `next`, and will
panic otherwise. This is checked using `QueryIterationCursor` state,
which is unique on initialization. Empty queries are an exception to
this, as they do not return any item in the first place.
That is because tracking how many iterations have already passed would
require regressing either normal query iteration a slight bit, or sorted
iteration by a lot. Besides, that would not be the intended use of these
methods.
## Testing
To ensure that `next` being called before `sort` results in a panic, I
added some tests. I also test that empty `QueryIter`s do not exhibit
this restriction.
The query sorts test checks for equivalence to the underlying sorts.
This change requires that `Query<(Entity, Entity)>` remains legal, if
that is not already guaranteed, which is also ensured by the
aforementioned test.
## Next Steps
Implement the set of sort methods for `QueryManyIter` as well.
- This will mostly work the same, other than needing to return a new
`QuerySortedManyIter` to account for iteration
over lists of entities that are not guaranteed to be unique. This new
query iterator will need a bit of internal restructuring
to allow for double-ended mutable iteration, while not regressing
read-only iteration.
The implementations for each pair of
- `sort`, `sort_unstable`,
- `sort_by`, sort_unstable_by,
- `sort_by_key,` `sort_by_cached_key`
are the same aside from the panic message and the sort call, so they
could be merged with an inner function.
That would require the use of higher-ranked trait bounds on
`WorldQuery::Item<'1>`, and is unclear to me whether it is currently
doable.
Iteration in QuerySortedIter might have space for improvement.
When sorting by `Entity`, an `(Entity, Entity)` lens `QueryData` is
constructed, is that worth remedying?
When table sorts are implemented, a fast path could be introduced to
these sort methods.
## Future Possibilities
Implementing `Ord` for EntityLocation might be useful.
Some papercuts in ergonomics can be improved by future Rust features:
- The additional generic parameter aside from the query lens can be
removed once this feature is stable:
`Fn -> impl Trait` (`impl Trait` in `Fn` trait return position)
- With type parameter defaults, the query lens generic can be defaulted
to `QueryData::Item`, allowing the sort methods
to look and behave like `slice::sort` when no query lens is specified.
- With TAIT, the iterator generic on `QuerySortedIter` and thus the huge
visible `impl Iterator` type in the sort function
signatures can be removed.
- With specialization, the bound on `L` could be relaxed to `QueryData`
when the underlying iterator is mutable.
## Changelog
Added `sort`, `sort_unstable`, `sort_by`, `sort_unstable_by`,
`sort_by_key`, `sort_by_cached_key` to `QueryIter`.
# Objective
- Introduce variants of `LoadContext::load_direct` which allow picking
asset type & configuring settings.
- Fixes#12963.
## Solution
- Implements `ErasedLoadedAsset::downcast` and adds some accessors to
`LoadedAsset<A>`.
- Changes `load_direct`/`load_direct_with_reader` to be typed, and
introduces `load_direct_untyped`/`load_direct_untyped_with_reader`.
- Introduces `load_direct_with_settings` and
`load_direct_with_reader_and_settings`.
## Testing
- I've run cargo test and played with the examples which use
`load_direct`.
- I also extended the `asset_processing` example to use the new typed
version of `load_direct` and use `load_direct_with_settings`.
---
## Changelog
- Introduced new `load_direct` methods in `LoadContext` to allow
specifying type & settings
## Migration Guide
- `LoadContext::load_direct` has been renamed to
`LoadContext::load_direct_untyped`. You may find the new `load_direct`
is more appropriate for your use case (and the migration may only be
moving one type parameter).
- `LoadContext::load_direct_with_reader` has been renamed to
`LoadContext::load_direct_untyped_with_reader`.
---
This might not be an obvious win as a solution because it introduces
quite a few new `load_direct` alternatives - but it does follow the
existing pattern pretty well. I'm very open to alternatives.
😅
# Objective
- Fixes scaling normals and tangents of meshes
## Solution
- When scaling a mesh by `Vec3::new(1., 1., -1.)`, the normals should be
flipped along the Z-axis. For example a normal of `Vec3::new(0., 0.,
1.)` should become `Vec3::new(0., 0., -1.)` after scaling. This is
achieved by multiplying the normal by the reciprocal of the scale,
cheking for infinity and normalizing. Before, the normal was multiplied
by a covector of the scale, which is incorrect for normals.
- Tangents need to be multiplied by the `scale`, not its reciprocal as
before
---------
Co-authored-by: vero <11307157+atlv24@users.noreply.github.com>
This commit makes us stop using the render world ECS for
`BinnedRenderPhase` and `SortedRenderPhase` and instead use resources
with `EntityHashMap`s inside. There are three reasons to do this:
1. We can use `clear()` to clear out the render phase collections
instead of recreating the components from scratch, allowing us to reuse
allocations.
2. This is a prerequisite for retained bins, because components can't be
retained from frame to frame in the render world, but resources can.
3. We want to move away from storing anything in components in the
render world ECS, and this is a step in that direction.
This patch results in a small performance benefit, due to point (1)
above.
## Changelog
### Changed
* The `BinnedRenderPhase` and `SortedRenderPhase` render world
components have been replaced with `ViewBinnedRenderPhases` and
`ViewSortedRenderPhases` resources.
## Migration Guide
* The `BinnedRenderPhase` and `SortedRenderPhase` render world
components have been replaced with `ViewBinnedRenderPhases` and
`ViewSortedRenderPhases` resources. Instead of querying for the
components, look the camera entity up in the
`ViewBinnedRenderPhases`/`ViewSortedRenderPhases` tables.
# Objective
- The current implementation for dynamic plugins is unsound. Please see
#11969 for background and justification.
- Closes#11969 and closes#13073.
## Solution
- Deprecate all dynamic plugin items for Bevy 0.14, with plans to remove
them for Bevy 0.15.
## Discussion
One thing I want to make clear is that I'm not opposed to dynamic
plugins _in general_. I think they can be handy, especially for DLC and
modding, but I think the current system is the wrong approach. It's too
much of a footgun for the meager benefit is provides.
---
## Changelog
- Deprecated the current dynamic plugin system.
- Dynamic plugins will be removed in Bevy 0.15. For now you can continue
using them by marking your code with `#[allow(deprecated)]`.
## Migration Guide
If possible, remove all usage of dynamic plugins.
```rust
// Old
#[derive(DynamicPlugin)]
pub struct MyPlugin;
App::new()
.load_plugin("path/to/plugin")
.run();
// New
pub struct MyPlugin;
App::new()
.add_plugins(MyPlugin)
.run();
```
If you are unable to do that, you may temporarily silence the
deprecation warnings.
```rust
#[allow(deprecated)]
```
Please note that the current dynamic plugin system will be removed by
the next major Bevy release, so you will have to migrate eventually. You
may be interested in these safer alternatives:
- [Bevy Assets - Scripting]: Scripting and modding libraries for Bevy
- [Bevy Assets - Development tools]: Hot reloading and other development
functionality
- [`stabby`]: Stable Rust ABI
[Bevy Assets - Scripting]: https://bevyengine.org/assets/#scripting
[Bevy Assets - Development tools]:
https://bevyengine.org/assets/#development-tools
[`stabby`]: https://github.com/ZettaScaleLabs/stabby
# Objective
- Fix#13421
## Solution
- Add an explicit note at the root of each struct that they must be
ticked manually
## Testing
- Generated the docs and the changes look good
---
---------
Co-authored-by: François Mockers <francois.mockers@vleue.com>
Co-authored-by: Matty <weatherleymatthew@gmail.com>
# Objective
As work on the editor starts to ramp up, it might be nice to start
allowing types to specify custom attributes. These can be used to
provide certain functionality to fields, such as ranges or controlling
how data is displayed.
A good example of this can be seen in
[`bevy-inspector-egui`](https://github.com/jakobhellermann/bevy-inspector-egui)
with its
[`InspectorOptions`](https://docs.rs/bevy-inspector-egui/0.22.1/bevy_inspector_egui/struct.InspectorOptions.html):
```rust
#[derive(Reflect, Default, InspectorOptions)]
#[reflect(InspectorOptions)]
struct Slider {
#[inspector(min = 0.0, max = 1.0)]
value: f32,
}
```
Normally, as demonstrated in the example above, these attributes are
handled by a derive macro and stored in a corresponding `TypeData`
struct (i.e. `ReflectInspectorOptions`).
Ideally, we would have a good way of defining this directly via
reflection so that users don't need to create and manage a whole proc
macro just to allow these sorts of attributes.
And note that this doesn't have to just be for inspectors and editors.
It can be used for things done purely on the code side of things.
## Solution
Create a new method for storing attributes on fields via the `Reflect`
derive.
These custom attributes are stored in type info (e.g. `NamedField`,
`StructInfo`, etc.).
```rust
#[derive(Reflect)]
struct Slider {
#[reflect(@0.0..=1.0)]
value: f64,
}
let TypeInfo::Struct(info) = Slider::type_info() else {
panic!("expected struct info");
};
let field = info.field("value").unwrap();
let range = field.get_attribute::<RangeInclusive<f64>>().unwrap();
assert_eq!(*range, 0.0..=1.0);
```
## TODO
- [x] ~~Bikeshed syntax~~ Went with a type-based approach, prefixed by
`@` for ease of parsing and flexibility
- [x] Add support for custom struct/tuple struct field attributes
- [x] Add support for custom enum variant field attributes
- [x] ~~Add support for custom enum variant attributes (maybe?)~~ ~~Will
require a larger refactor. Can be saved for a future PR if we really
want it.~~ Actually, we apparently still have support for variant
attributes despite not using them, so it was pretty easy to add lol.
- [x] Add support for custom container attributes
- [x] Allow custom attributes to store any reflectable value (not just
`Lit`)
- [x] ~~Store attributes in registry~~ This PR used to store these in
attributes in the registry, however, it has since switched over to
storing them in type info
- [x] Add example
## Bikeshedding
> [!note]
> This section was made for the old method of handling custom
attributes, which stored them by name (i.e. `some_attribute = 123`). The
PR has shifted away from that, to a more type-safe approach.
>
> This section has been left for reference.
There are a number of ways we can syntactically handle custom
attributes. Feel free to leave a comment on your preferred one! Ideally
we want one that is clear, readable, and concise since these will
potentially see _a lot_ of use.
Below is a small, non-exhaustive list of them. Note that the
`skip_serializing` reflection attribute is added to demonstrate how each
case plays with existing reflection attributes.
<details>
<summary>List</summary>
##### 1. `@(name = value)`
> The `@` was chosen to make them stand out from other attributes and
because the "at" symbol is a subtle pneumonic for "attribute". Of
course, other symbols could be used (e.g. `$`, `#`, etc.).
```rust
#[derive(Reflect)]
struct Slider {
#[reflect(@(min = 0.0, max = 1.0), skip_serializing)]
#[[reflect(@(bevy_editor::hint = "Range: 0.0 to 1.0"))]
value: f32,
}
```
##### 2. `@name = value`
> This is my personal favorite.
```rust
#[derive(Reflect)]
struct Slider {
#[reflect(@min = 0.0, @max = 1.0, skip_serializing)]
#[[reflect(@bevy_editor::hint = "Range: 0.0 to 1.0")]
value: f32,
}
```
##### 3. `custom_attr(name = value)`
> `custom_attr` can be anything. Other possibilities include `with` or
`tag`.
```rust
#[derive(Reflect)]
struct Slider {
#[reflect(custom_attr(min = 0.0, max = 1.0), skip_serializing)]
#[[reflect(custom_attr(bevy_editor::hint = "Range: 0.0 to 1.0"))]
value: f32,
}
```
##### 4. `reflect_attr(name = value)`
```rust
#[derive(Reflect)]
struct Slider {
#[reflect(skip_serializing)]
#[reflect_attr(min = 0.0, max = 1.0)]
#[[reflect_attr(bevy_editor::hint = "Range: 0.0 to 1.0")]
value: f32,
}
```
</details>
---
## Changelog
- Added support for custom attributes on reflected types (i.e.
`#[reflect(@Foo::new("bar")]`)
Commit 3f5a090b1b added a reference to
`STANDARD_MATERIAL_FLAGS_BASE_COLOR_UV_BIT`, a nonexistent identifier,
in the alpha discard portion of the prepass shader. Moreover, the logic
didn't make sense to me. I think the code was trying to choose between
the two UV sets depending on which is present, so I made it do that.
I noticed this when trying Bistro with #13277. I'm not sure why this
issue didn't manifest itself before, but it's clearly a bug, so here's a
fix. We should probably merge this before 0.14.
# Objective
- some gltf files are broken since #13333
```
thread 'IO Task Pool (2)' panicked at crates/bevy_render/src/mesh/mesh/mod.rs:581:9:
`compute_flat_normals` can't work on indexed geometry. Consider calling either `Mesh::compute_smooth_normals` or `Mesh::duplicate_vertices` followed by `Mesh::compute_flat_normals`.
```
- test with example `custom_gltf_vertex_attribute` or
`gltf_skinned_mesh`
## Solution
- Call the wrapper function for normals that will either call
`compute_flat_normals` or `compute_smooth_normals` as appropriate
## Testing
- Ran the two examples mentioned above
# Objective
- All `ShapeMeshBuilder`s have some methods/implementations in common.
These are `fn build(&self) -> Mesh` and this implementation:
```rust
impl From<ShapeMeshBuilder> for Mesh {
fn from(builder: ShapeMeshBuilder) -> {
builder.build()
}
}
```
- For the sake of consistency, these can be moved into a shared trait
## Solution
- Add `trait MeshBuilder` containing a `fn build(&self) -> Mesh` and
implementing `MeshBuilder for ShapeMeshBuilder`
- Implement `From<T: MeshBuilder> for Mesh`
## Migration Guide
- When calling `.build()` you need to import
`bevy_render::mesh::primitives::MeshBuilder`
# Objective
- Fixes#12377
## Solution
Added simple `#[diagnostic::on_unimplemented(...)]` attributes to some
critical public traits providing a more approachable initial error
message. Where appropriate, a `note` is added indicating that a `derive`
macro is available.
## Examples
<details>
<summary>Examples hidden for brevity</summary>
Below is a collection of examples showing the new error messages
produced by this change. In general, messages will start with a more
Bevy-centric error message (e.g., _`MyComponent` is not a `Component`_),
and a note directing the user to an available derive macro where
appropriate.
### Missing `#[derive(Resource)]`
<details>
<summary>Example Code</summary>
```rust
use bevy::prelude::*;
struct MyResource;
fn main() {
App::new()
.insert_resource(MyResource)
.run();
}
```
</details>
<details>
<summary>Error Generated</summary>
```error
error[E0277]: `MyResource` is not a `Resource`
--> examples/app/empty.rs:7:26
|
7 | .insert_resource(MyResource)
| --------------- ^^^^^^^^^^ invalid `Resource`
| |
| required by a bound introduced by this call
|
= help: the trait `Resource` is not implemented for `MyResource`
= note: consider annotating `MyResource` with `#[derive(Resource)]`
= help: the following other types implement trait `Resource`:
AccessibilityRequested
ManageAccessibilityUpdates
bevy::bevy_a11y::Focus
DiagnosticsStore
FrameCount
bevy::prelude::State<S>
SystemInfo
bevy::prelude::Axis<T>
and 141 others
note: required by a bound in `bevy::prelude::App::insert_resource`
--> C:\Users\Zac\Documents\GitHub\bevy\crates\bevy_app\src\app.rs:419:31
|
419 | pub fn insert_resource<R: Resource>(&mut self, resource: R) -> &mut Self {
| ^^^^^^^^ required by this bound in `App::insert_resource`
```
</details>
### Putting A `QueryData` in a `QueryFilter` Slot
<details>
<summary>Example Code</summary>
```rust
use bevy::prelude::*;
#[derive(Component)]
struct A;
#[derive(Component)]
struct B;
fn my_system(_query: Query<&A, &B>) {}
fn main() {
App::new()
.add_systems(Update, my_system)
.run();
}
```
</details>
<details>
<summary>Error Generated</summary>
```error
error[E0277]: `&B` is not a valid `Query` filter
--> examples/app/empty.rs:9:22
|
9 | fn my_system(_query: Query<&A, &B>) {}
| ^^^^^^^^^^^^^ invalid `Query` filter
|
= help: the trait `QueryFilter` is not implemented for `&B`
= help: the following other types implement trait `QueryFilter`:
With<T>
Without<T>
bevy::prelude::Or<()>
bevy::prelude::Or<(F0,)>
bevy::prelude::Or<(F0, F1)>
bevy::prelude::Or<(F0, F1, F2)>
bevy::prelude::Or<(F0, F1, F2, F3)>
bevy::prelude::Or<(F0, F1, F2, F3, F4)>
and 28 others
note: required by a bound in `bevy::prelude::Query`
--> C:\Users\Zac\Documents\GitHub\bevy\crates\bevy_ecs\src\system\query.rs:349:51
|
349 | pub struct Query<'world, 'state, D: QueryData, F: QueryFilter = ()> {
| ^^^^^^^^^^^ required by this bound in `Query`
```
</details>
### Missing `#[derive(Component)]`
<details>
<summary>Example Code</summary>
```rust
use bevy::prelude::*;
struct A;
fn my_system(mut commands: Commands) {
commands.spawn(A);
}
fn main() {
App::new()
.add_systems(Startup, my_system)
.run();
}
```
</details>
<details>
<summary>Error Generated</summary>
```error
error[E0277]: `A` is not a `Bundle`
--> examples/app/empty.rs:6:20
|
6 | commands.spawn(A);
| ----- ^ invalid `Bundle`
| |
| required by a bound introduced by this call
|
= help: the trait `bevy::prelude::Component` is not implemented for `A`, which is required by `A: Bundle`
= note: consider annotating `A` with `#[derive(Component)]` or `#[derive(Bundle)]`
= help: the following other types implement trait `Bundle`:
TransformBundle
SceneBundle
DynamicSceneBundle
AudioSourceBundle<Source>
SpriteBundle
SpriteSheetBundle
Text2dBundle
MaterialMesh2dBundle<M>
and 34 others
= note: required for `A` to implement `Bundle`
note: required by a bound in `bevy::prelude::Commands::<'w, 's>::spawn`
--> C:\Users\Zac\Documents\GitHub\bevy\crates\bevy_ecs\src\system\commands\mod.rs:243:21
|
243 | pub fn spawn<T: Bundle>(&mut self, bundle: T) -> EntityCommands {
| ^^^^^^ required by this bound in `Commands::<'w, 's>::spawn`
```
</details>
### Missing `#[derive(Asset)]`
<details>
<summary>Example Code</summary>
```rust
use bevy::prelude::*;
struct A;
fn main() {
App::new()
.init_asset::<A>()
.run();
}
```
</details>
<details>
<summary>Error Generated</summary>
```error
error[E0277]: `A` is not an `Asset`
--> examples/app/empty.rs:7:23
|
7 | .init_asset::<A>()
| ---------- ^ invalid `Asset`
| |
| required by a bound introduced by this call
|
= help: the trait `Asset` is not implemented for `A`
= note: consider annotating `A` with `#[derive(Asset)]`
= help: the following other types implement trait `Asset`:
Font
AnimationGraph
DynamicScene
Scene
AudioSource
Pitch
bevy::bevy_gltf::Gltf
GltfNode
and 17 others
note: required by a bound in `init_asset`
--> C:\Users\Zac\Documents\GitHub\bevy\crates\bevy_asset\src\lib.rs:307:22
|
307 | fn init_asset<A: Asset>(&mut self) -> &mut Self;
| ^^^^^ required by this bound in `AssetApp::init_asset`
```
</details>
### Mismatched Input and Output on System Piping
<details>
<summary>Example Code</summary>
```rust
use bevy::prelude::*;
fn producer() -> u32 {
123
}
fn consumer(_: In<u16>) {}
fn main() {
App::new()
.add_systems(Update, producer.pipe(consumer))
.run();
}
```
</details>
<details>
<summary>Error Generated</summary>
```error
error[E0277]: `fn(bevy::prelude::In<u16>) {consumer}` is not a valid system with input `u32` and output `_`
--> examples/app/empty.rs:11:44
|
11 | .add_systems(Update, producer.pipe(consumer))
| ---- ^^^^^^^^ invalid system
| |
| required by a bound introduced by this call
|
= help: the trait `bevy::prelude::IntoSystem<u32, _, _>` is not implemented for fn item `fn(bevy::prelude::In<u16>) {consumer}`
= note: expecting a system which consumes `u32` and produces `_`
note: required by a bound in `pipe`
--> C:\Users\Zac\Documents\GitHub\bevy\crates\bevy_ecs\src\system\mod.rs:168:12
|
166 | fn pipe<B, Final, MarkerB>(self, system: B) -> PipeSystem<Self::System, B::System>
| ---- required by a bound in this associated function
167 | where
168 | B: IntoSystem<Out, Final, MarkerB>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `IntoSystem::pipe`
```
</details>
### Missing Reflection
<details>
<summary>Example Code</summary>
```rust
use bevy::prelude::*;
#[derive(Component)]
struct MyComponent;
fn main() {
App::new()
.register_type::<MyComponent>()
.run();
}
```
</details>
<details>
<summary>Error Generated</summary>
```error
error[E0277]: `MyComponent` does not provide type registration information
--> examples/app/empty.rs:8:26
|
8 | .register_type::<MyComponent>()
| ------------- ^^^^^^^^^^^ the trait `GetTypeRegistration` is not implemented for `MyComponent`
| |
| required by a bound introduced by this call
|
= note: consider annotating `MyComponent` with `#[derive(Reflect)]`
= help: the following other types implement trait `GetTypeRegistration`:
bool
char
isize
i8
i16
i32
i64
i128
and 443 others
note: required by a bound in `bevy::prelude::App::register_type`
--> C:\Users\Zac\Documents\GitHub\bevy\crates\bevy_app\src\app.rs:619:29
|
619 | pub fn register_type<T: bevy_reflect::GetTypeRegistration>(&mut self) -> &mut Self {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `App::register_type`
```
</details>
### Missing `#[derive(States)]` Implementation
<details>
<summary>Example Code</summary>
```rust
use bevy::prelude::*;
#[derive(Debug, Clone, Copy, Default, Eq, PartialEq, Hash)]
enum AppState {
#[default]
Menu,
InGame {
paused: bool,
turbo: bool,
},
}
fn main() {
App::new()
.init_state::<AppState>()
.run();
}
```
</details>
<details>
<summary>Error Generated</summary>
```error
error[E0277]: the trait bound `AppState: FreelyMutableState` is not satisfied
--> examples/app/empty.rs:15:23
|
15 | .init_state::<AppState>()
| ---------- ^^^^^^^^ the trait `FreelyMutableState` is not implemented for `AppState`
| |
| required by a bound introduced by this call
|
= note: consider annotating `AppState` with `#[derive(States)]`
note: required by a bound in `bevy::prelude::App::init_state`
--> C:\Users\Zac\Documents\GitHub\bevy\crates\bevy_app\src\app.rs:282:26
|
282 | pub fn init_state<S: FreelyMutableState + FromWorld>(&mut self) -> &mut Self {
| ^^^^^^^^^^^^^^^^^^ required by this bound in `App::init_state`
```
</details>
### Adding a `System` with Unhandled Output
<details>
<summary>Example Code</summary>
```rust
use bevy::prelude::*;
fn producer() -> u32 {
123
}
fn main() {
App::new()
.add_systems(Update, consumer)
.run();
}
```
</details>
<details>
<summary>Error Generated</summary>
```error
error[E0277]: `fn() -> u32 {producer}` does not describe a valid system configuration
--> examples/app/empty.rs:9:30
|
9 | .add_systems(Update, producer)
| ----------- ^^^^^^^^ invalid system configuration
| |
| required by a bound introduced by this call
|
= help: the trait `IntoSystem<(), (), _>` is not implemented for fn item `fn() -> u32 {producer}`, which is required by `fn() -> u32 {producer}: IntoSystemConfigs<_>`
= help: the following other types implement trait `IntoSystemConfigs<Marker>`:
<Box<(dyn bevy::prelude::System<In = (), Out = ()> + 'static)> as IntoSystemConfigs<()>>
<NodeConfigs<Box<(dyn bevy::prelude::System<In = (), Out = ()> + 'static)>> as IntoSystemConfigs<()>>
<(S0,) as IntoSystemConfigs<(SystemConfigTupleMarker, P0)>>
<(S0, S1) as IntoSystemConfigs<(SystemConfigTupleMarker, P0, P1)>>
<(S0, S1, S2) as IntoSystemConfigs<(SystemConfigTupleMarker, P0, P1, P2)>>
<(S0, S1, S2, S3) as IntoSystemConfigs<(SystemConfigTupleMarker, P0, P1, P2, P3)>>
<(S0, S1, S2, S3, S4) as IntoSystemConfigs<(SystemConfigTupleMarker, P0, P1, P2, P3, P4)>>
<(S0, S1, S2, S3, S4, S5) as IntoSystemConfigs<(SystemConfigTupleMarker, P0, P1, P2, P3, P4, P5)>>
and 14 others
= note: required for `fn() -> u32 {producer}` to implement `IntoSystemConfigs<_>`
note: required by a bound in `bevy::prelude::App::add_systems`
--> C:\Users\Zac\Documents\GitHub\bevy\crates\bevy_app\src\app.rs:342:23
|
339 | pub fn add_systems<M>(
| ----------- required by a bound in this associated function
...
342 | systems: impl IntoSystemConfigs<M>,
| ^^^^^^^^^^^^^^^^^^^^ required by this bound in `App::add_systems`
```
</details>
</details>
## Testing
CI passed locally.
## Migration Guide
Upgrade to version 1.78 (or higher) of Rust.
## Future Work
- Currently, hints are not supported in this diagnostic. Ideally,
suggestions like _"consider using ..."_ would be in a hint rather than a
note, but that is the best option for now.
- System chaining and other `all_tuples!(...)`-based traits have bad
error messages due to the slightly different error message format.
---------
Co-authored-by: Jamie Ridding <Themayu@users.noreply.github.com>
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: BD103 <59022059+BD103@users.noreply.github.com>
# Objective
- The volumetric fog PR originally needed to be modified to use
`.view_layouts` but that was changed in another PR. The merge with main
still kept those around.
## Solution
- Remove them because they aren't necessary
# Objective
Fixes#13189
## Solution
To add the reflect impls I needed to make all the struct fields pub. I
don't think there's any harm for these types, but just a note for
review.
---------
Co-authored-by: Ben Harper <ben@tukom.org>
This commit implements a more physically-accurate, but slower, form of
fog than the `bevy_pbr::fog` module does. Notably, this *volumetric fog*
allows for light beams from directional lights to shine through,
creating what is known as *light shafts* or *god rays*.
To add volumetric fog to a scene, add `VolumetricFogSettings` to the
camera, and add `VolumetricLight` to directional lights that you wish to
be volumetric. `VolumetricFogSettings` has numerous settings that allow
you to define the accuracy of the simulation, as well as the look of the
fog. Currently, only interaction with directional lights that have
shadow maps is supported. Note that the overhead of the effect scales
directly with the number of directional lights in use, so apply
`VolumetricLight` sparingly for the best results.
The overall algorithm, which is implemented as a postprocessing effect,
is a combination of the techniques described in [Scratchapixel] and
[this blog post]. It uses raymarching in screen space, transformed into
shadow map space for sampling and combined with physically-based
modeling of absorption and scattering. Bevy employs the widely-used
[Henyey-Greenstein phase function] to model asymmetry; this essentially
allows light shafts to fade into and out of existence as the user views
them.
Volumetric rendering is a huge subject, and I deliberately kept the
scope of this commit small. Possible follow-ups include:
1. Raymarching at a lower resolution.
2. A post-processing blur (especially useful when combined with (1)).
3. Supporting point lights and spot lights.
4. Supporting lights with no shadow maps.
5. Supporting irradiance volumes and reflection probes.
6. Voxel components that reuse the volumetric fog code to create voxel
shapes.
7. *Horizon: Zero Dawn*-style clouds.
These are all useful, but out of scope of this patch for now, to keep
things tidy and easy to review.
A new example, `volumetric_fog`, has been added to demonstrate the
effect.
## Changelog
### Added
* A new component, `VolumetricFog`, is available, to allow for a more
physically-accurate, but more resource-intensive, form of fog.
* A new component, `VolumetricLight`, can be placed on directional
lights to make them interact with `VolumetricFog`. Notably, this allows
such lights to emit light shafts/god rays.
[Scratchapixel]:
https://www.scratchapixel.com/lessons/3d-basic-rendering/volume-rendering-for-developers/intro-volume-rendering.html
[this blog post]: https://www.alexandre-pestana.com/volumetric-lights/
[Henyey-Greenstein phase function]:
https://www.pbr-book.org/4ed/Volume_Scattering/Phase_Functions#TheHenyeyndashGreensteinPhaseFunction
# Objective
Remove the limit of `RenderLayer` by using a growable mask using
`SmallVec`.
Changes adopted from @UkoeHB's initial PR here
https://github.com/bevyengine/bevy/pull/12502 that contained additional
changes related to propagating render layers.
Changes
## Solution
The main thing needed to unblock this is removing `RenderLayers` from
our shader code. This primarily affects `DirectionalLight`. We are now
computing a `skip` field on the CPU that is then used to skip the light
in the shader.
## Testing
Checked a variety of examples and did a quick benchmark on `many_cubes`.
There were some existing problems identified during the development of
the original pr (see:
https://discord.com/channels/691052431525675048/1220477928605749340/1221190112939872347).
This PR shouldn't change any existing behavior besides removing the
layer limit (sans the comment in migration about `all` layers no longer
being possible).
---
## Changelog
Removed the limit on `RenderLayers` by using a growable bitset that only
allocates when layers greater than 64 are used.
## Migration Guide
- `RenderLayers::all()` no longer exists. Entities expecting to be
visible on all layers, e.g. lights, should compute the active layers
that are in use.
---------
Co-authored-by: robtfm <50659922+robtfm@users.noreply.github.com>
# Objective
- Implement rounded cuboids and rectangles, suggestion of #9400
## Solution
- Added `Gizmos::rounded_cuboid`, `Gizmos::rounded_rect` and
`Gizmos::rounded_rect_2d`.
- All of these return builders that allow configuring of the corner/edge
radius using `.corner_radius(...)` or `.edge_radius(...)` as well as the
line segments of each arc using `.arc_segments(...)`.
---
## Changelog
- Added a new `rounded_box` module to `bevy_gizmos` containing all of
the above methods and builders.
- Updated the examples `2d_gizmos` and `3d_gizmos`
## Additional information
The 3d example now looks like this:
<img width="1440" alt="Screenshot 2024-02-28 at 01 47 28"
src="https://github.com/bevyengine/bevy/assets/62256001/654e30ca-c091-4f14-a402-90138e95c71b">
And this is the updated 2d example showcasing negative corner radius:
<img width="1440" alt="Screenshot 2024-02-28 at 01 59 37"
src="https://github.com/bevyengine/bevy/assets/62256001/3904697a-5462-4ee7-abd9-3e893ca07082">
<img width="1440" alt="Screenshot 2024-02-28 at 01 59 47"
src="https://github.com/bevyengine/bevy/assets/62256001/a8892cfd-3aad-4c0c-87eb-559c17c8864c">
---------
Co-authored-by: JMS55 <47158642+JMS55@users.noreply.github.com>
Co-authored-by: James Gayfer <10660608+jgayfer@users.noreply.github.com>
# Objective
- Refactor the changes merged in #11654 to compute flat normals for
indexed meshes instead of smooth normals.
- Fixes#12716
## Solution
- Partially revert the changes in #11654 to compute flat normals for
both indexed and unindexed meshes in `compute_flat_normals`
- Create a new method, `compute_smooth_normals`, that computes smooth
normals for indexed meshes
- Create a new method, `compute_normals`, that computes smooth normals
for indexed meshes and flat normals for unindexed meshes by default. Use
this new method instead of `compute_flat_normals`.
## Testing
- Run the example with and without the changes to ensure that the
results are identical.
# Objective
To streamline the code which utilizes `Debug` in user's struct like
`GraphicsSettings`. This addition aims to enhance code simplicity and
readability.
## Solution
Add `Debug` derive for `ScreenSpaceAmbientOcclusionSettings` struct.
## Testing
Should have no impact.
# Objective
- Depth of field is currently disabled on any wasm targets, but the bug
it's trying to avoid is only an issue in webgl.
## Solution
- Enable dof when compiling for webgpu
- I also remove the msaa check because sampling a depth texture doesn't
work with or without msaa in webgl
- Unfortunately, Bokeh seems to be broken when using webgpu, so default
to Gaussian instead to make sure the defaults have the broadest platform
support
## Testing
- I added dof to the 3d_shapes example and compiled it to webgpu to
confirm it works
- I also tried compiling to webgl to confirm things still works and dof
isn't rendered.
---------
Co-authored-by: James Liu <contact@jamessliu.com>
# Objective
Fixes#13332.
## Solution
The assertion `circumradius >= 0.0` to allow zero.
Are there any other shapes that need to be allowed to be constructed
with zero?
---------
Co-authored-by: François Mockers <francois.mockers@vleue.com>
# Objective
- Fixes#13377
- Fixes https://github.com/bevyengine/bevy/issues/13383
## Solution
- Even if the number of renderables is empty, the transparent phase need
to run to set the clear color.
## Testing
- Tested on the `clear_color` example
# Objective
Optimize vertex prepass shader maybe?
Make it consistent with the base vertex shader
## Solution
`mesh_position_local_to_clip` just calls `mesh_position_local_to_world`
and then `position_world_to_clip`
since `out.world_position` is getting calculated anyway a few lines
below, just move it up and use it's output to calculate `out.position`.
It is the same as in the base vertex shader (`mesh.wgsl`).
Note: I have no idea if there is a reason that it was this way. I'm not
an expert, just noticed this inconsistency while messing with custom
shaders.
# Objective
Provides a `WorldQuery` implementation on `Mut<T>` that forwards to the
implementation on `&mut T`, and give users a way to opt-in to change
detection in auto-generated `QueryData::ReadOnly` types.
Fixes#13329.
## Solution
I implemented `WorldQuery` on `Mut<'w, T>` as a forwarding
implementation to `&mut T`, setting the `QueryData::ReadOnly` associated
type to `Ref<'w, T>`. This provides users the ability to explicitly
opt-in to change detection in the read-only forms of queries.
## Testing
A documentation test was added to `Mut` showcasing the new
functionality.
---
## Changelog
### Added
- Added an implementation of `WorldQuery` and `QueryData` on
`bevy_ecs::change_detection::Mut`.
# Objective
- Fixes#13214
## Solution
Delegates to internal type when possible, otherwise uses
`ChosenColorSpace` as an intermediary. This _will_ double convert, but
this is considered an acceptable compromise since use of specific colour
types in performance critical colour operations is already encouraged.
`ChosenColorSpace` is `Oklcha` since it's perceptually uniform while
supporting all required operations, and in my opinion is the "best" for
this task. Using different spaces for different operations will make
documenting this double-conversion behaviour more challenging.
## Testing
Changes straightforward enough to not require testing beyond current CI
in my opinion.
---
## Changelog
- Implemented the following traits for `Color`:
- `Luminance`
- `Hue`
- `Mix`
- `EuclideanDistance`
- `ClampColor`
- Added documentation to `Color` explaining the behaviour of these
operations (possible conversion, etc.)
# Objective
- The UV transform was applied in the main pass but not the prepass.
## Solution
- Apply the UV transform in the prepass.
## Testing
- The normals in my scene now look correct when using the prepass.
# Objective
Passing `&World` in the `WorldQuery::get_state` method is unnecessary,
as all implementations of this method in the engine either only access
`Components` in `&World`, or do nothing with it.
It can introduce UB by necessitating the creation of a `&World` from a
`UnsafeWorldCell`.
This currently happens in `Query::transmute_lens`, which obtains a
`&World` from the internal `UnsafeWorldCell` solely to pass to
`get_state`. `Query::join` suffers from the same issue.
Other cases of UB come from allowing implementors of `WorldQuery` to
freely access `&World`, like in the `bevy-trait-query` crate, where a
[reference to a resource is
obtained](0c0e7dd646/src/lib.rs (L445))
inside of
[`get_state`](0c0e7dd646/src/one.rs (L245)),
potentially aliasing with a `ResMut` parameter in the same system.
`WorldQuery::init_state` currently requires `&mut World`, which doesn't
suffer from these issues.
But that too can be changed to receive a wrapper around `&mut
Components` and `&mut Storages` for consistency in a follow-up PR.
## Solution
Replace the `&World` parameter in `get_state` with `&Components`.
## Changelog
`WorldQuery::get_state` now takes `&Components` instead of `&World`.
The `transmute`, `transmute_filtered`, `join` and `join_filtered`
methods on `QueryState` now similarly take `&Components` instead of
`&World`.
## Migration Guide
Users of `WorldQuery::get_state` or `transmute`, `transmute_filtered`,
`join` and `join_filtered` methods on `QueryState` now need to pass
`&Components` instead of `&World`.
`&Components` can be trivially obtained from either `components` method
on `&World` or `UnsafeWorldCell`.
For implementors of `WorldQuery::get_state` that were accessing more
than the `Components` inside `&World` and its methods, this is no longer
allowed.
# Objective
As was pointed out in #13183, `bevy_mikktspace` is missing it's msrv
from it `Cargo.toml`. This promted me to check the msrv of every
`bevy_*` crate. Closes#13183.
## Solution
- Call `cargo check` with different rust versions on every bevy crate
until it doesn't complain.
- Write down the rust version `cargo check` started working.
## Testing
- Install `cargo-msrv`.
- Run `cargo msrv verify`.
- Rejoice.
---
## Changelog
Every published bevy crate now specifies a MSRV. If your rust toolchain
isn't at least version `1.77.0` You'll likely not be able to compile
most of bevy.
## Migration Guide
If your rust toolchain is bellow version`1.77.0, update.
This commit implements the [depth of field] effect, simulating the blur
of objects out of focus of the virtual lens. Either the [hexagonal
bokeh] effect or a faster Gaussian blur may be used. In both cases, the
implementation is a simple separable two-pass convolution. This is not
the most physically-accurate real-time bokeh technique that exists;
Unreal Engine has [a more accurate implementation] of "cinematic depth
of field" from 2018. However, it's simple, and most engines provide
something similar as a fast option, often called "mobile" depth of
field.
The general approach is outlined in [a blog post from 2017]. We take
advantage of the fact that both Gaussian blurs and hexagonal bokeh blurs
are *separable*. This means that their 2D kernels can be reduced to a
small number of 1D kernels applied one after another, asymptotically
reducing the amount of work that has to be done. Gaussian blurs can be
accomplished by blurring horizontally and then vertically, while
hexagonal bokeh blurs can be done with a vertical blur plus a diagonal
blur, plus two diagonal blurs. In both cases, only two passes are
needed. Bokeh requires the first pass to have a second render target and
requires two subpasses in the second pass, which decreases its
performance relative to the Gaussian blur.
The bokeh blur is generally more aesthetically pleasing than the
Gaussian blur, as it simulates the effect of a camera more accurately.
The shape of the bokeh circles are determined by the number of blades of
the aperture. In our case, we use a hexagon, which is usually considered
specific to lower-quality cameras. (This is a downside of the fast
hexagon approach compared to the higher-quality approaches.) The blur
amount is generally specified by the [f-number], which we use to compute
the focal length from the film size and FOV. By default, we simulate
standard cinematic cameras of f/1 and [Super 35]. The developer can
customize these values as desired.
A new example has been added to demonstrate depth of field. It allows
customization of the mode (Gaussian vs. bokeh), focal distance and
f-numbers. The test scene is inspired by a [blog post on depth of field
in Unity]; however, the effect is implemented in a completely different
way from that blog post, and all the assets (textures, etc.) are
original.
Bokeh depth of field:
Gaussian depth of field:
No depth of field:
[depth of field]: https://en.wikipedia.org/wiki/Depth_of_field
[hexagonal bokeh]:
https://colinbarrebrisebois.com/2017/04/18/hexagonal-bokeh-blur-revisited/
[a more accurate implementation]:
https://epicgames.ent.box.com/s/s86j70iamxvsuu6j35pilypficznec04
[a blog post from 2017]:
https://colinbarrebrisebois.com/2017/04/18/hexagonal-bokeh-blur-revisited/
[f-number]: https://en.wikipedia.org/wiki/F-number
[Super 35]: https://en.wikipedia.org/wiki/Super_35
[blog post on depth of field in Unity]:
https://catlikecoding.com/unity/tutorials/advanced-rendering/depth-of-field/
## Changelog
### Added
* A depth of field postprocessing effect is now available, to simulate
objects being out of focus of the camera. To use it, add
`DepthOfFieldSettings` to an entity containing a `Camera3d` component.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Bram Buurlage <brambuurlage@gmail.com>
# Objective
The `Cone` primitive should support meshing.
## Solution
Implement meshing for the `Cone` primitive. The default cone has a
height of 1 and a base radius of 0.5, and is centered at the origin.
An issue with cone meshes is that the tip does not really have a normal
that works, even with duplicated vertices. This PR uses only a single
vertex for the tip, with a normal of zero; this results in an "invalid"
normal that gets ignored by the fragment shader. This seems to be the
only approach we have for perfectly smooth cones. For discussion on the
topic, see #10298 and #5891.
Another thing to note is that the cone uses polar coordinates for the
UVs:
<img
src="https://github.com/bevyengine/bevy/assets/57632562/e101ded9-110a-4ac4-a98d-f1e4d740a24a"
alt="cone" width="400" />
This way, textures are applied as if looking at the cone from above:
<img
src="https://github.com/bevyengine/bevy/assets/57632562/8dea00f1-a283-4bc4-9676-91e8d4adb07a"
alt="texture" width="200" />
<img
src="https://github.com/bevyengine/bevy/assets/57632562/d9d1b5e6-a8ba-4690-b599-904dd85777a1"
alt="cone" width="200" />
# Objective
adopted from #10716
adds example for updating state
---------
Co-authored-by: Stepan Koltsov <stepan.koltsov@gmail.com>
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
This commit fixes two issues in auto_exposure.wgsl:
* A `storageBarrier()` was incorrectly used where a `workgroupBarrier()`
should be used instead;
* Resetting the `histogram_shared` array would write beyond the 64th
index, which is out of bounds.
## Solution
The first issue is fixed by using the appropriate workgroupBarrier
instead;
The second issue is fixed by adding a range check before setting
`histogram_shared[local_invocation_index] = 0u`.
## Testing
These changes were tested using the Xcode metal profiler, and I could
not find any noticable change in compute shader performance.
# Objective
- When building for release, there are "unused" warnings:
```
warning: unused import: `bevy_utils::warn_once`
--> crates/bevy_pbr/src/render/mesh_view_bindings.rs:32:5
|
32 | use bevy_utils::warn_once;
| ^^^^^^^^^^^^^^^^^^^^^
|
= note: `#[warn(unused_imports)]` on by default
warning: unused variable: `texture_count`
--> crates/bevy_pbr/src/render/mesh_view_bindings.rs:371:17
|
371 | let texture_count: usize = entries
| ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_texture_count`
|
= note: `#[warn(unused_variables)]` on by default
```
## Solution
- Gate the import and definition by the same cfg as their uses
# Objective
Add an explanation of the differences between `alignment` and `Anchor`
to the `Text2dBundle` docs.
---------
Co-authored-by: Rob Parrett <robparrett@gmail.com>
Co-authored-by: François Mockers <mockersf@gmail.com>
# Objective
- Fixes https://github.com/bevyengine/bevy/issues/12597
The current tracing customization option (the `update_subscriber` field)
was basically unusable because it provides a `dyn Subscriber` and most
layers require a `Subscriber` that also implements `for<'a>
LookupSpan<'a, Data=Data<'a>>`, so it was impossible to add a layer on
top of the `dyn Subscriber`.
This PR provides an alternative way of adding additional tracing layers
to the LogPlugin by instead creating an `Option<Layer>`.
This is enough for most situations because `Option<Layer>` and
`Vec<Layer>` both implement `Layer`.
## Solution
- Replace the `update_subscriber` field of `LogPlugin` with a
`custom_layer` field which is function pointer returning an
`Option<BoxedLayer>`
- Update the examples to showcase that this works:
- with multiple additional layers
- with Layers that were previously problematic, such as
`bevy::log::tracing_subscriber::fmt::layer().with_file(true)` (mentioned
in the issue)
Note that in the example this results in duplicate logs, since we have
our own layer on top of the default `fmt_layer` added in the LogPlugin;
maybe in the future we might want to provide a single one? Or to let the
user customize the default `fmt_layer` ? I still think this change is an
improvement upon the previous solution, which was basically broken.
---
## Changelog
> This section is optional. If this was a trivial fix, or has no
externally-visible impact, you can delete this section.
- The `LogPlugin`'s `update_subscriber` field has been replaced with
`custom_layer` to allow the user to flexibly add a `tracing::Layer` to
the layer stack
## Migration Guide
- The `LogPlugin`'s `update_subscriber` field has been replaced with
`custom_layer`
---------
Co-authored-by: BD103 <59022059+BD103@users.noreply.github.com>
# Objective
Fixes#13097 and other issues preventing the motion blur example from
working on wasm
## Solution
- Use a vec2 for padding
- Fix error initializing the `MotionBlur` struct on wasm+webgl2
- Disable MSAA on wasm+webgl2
- Fix `GlobalsUniform` padding getting added on the shader side for
webgpu builds
## Notes
The motion blur example now runs, but with artifacts. In addition to the
obvious black artifacts, the motion blur or dithering seem to just look
worse in a way I can't really describe. That may be expected.
```
AdapterInfo { name: "ANGLE (Apple, ANGLE Metal Renderer: Apple M1 Max, Unspecified Version)", vendor: 4203, device: 0, device_type: IntegratedGpu, driver: "", driver_info: "", backend: Gl }
```
<img width="1276" alt="Screenshot 2024-04-25 at 6 51 21 AM"
src="https://github.com/bevyengine/bevy/assets/200550/65401d4f-92fe-454b-9dbc-a2d89d3ad963">
# Objective
- **Describe the objective or issue this PR addresses.**
`bevy_asset` includes code
[here](4350ad0bd1/crates/bevy_asset/src/io/wasm.rs (L61))
that references `web_sys::WorkerGlobalScope`. However, `bevy_asset` does
not enable this feature, see
[here](4350ad0bd1/crates/bevy_asset/Cargo.toml (L50)).
Running examples does not catch this problem because the feature is
implicitly included by `wgpu` when `bevy_render` is also a dependency,
see
[bevy_render](4350ad0bd1/crates/bevy_render/Cargo.toml (L73-L80))
and
[wgpu](3b6112d45d/wgpu/Cargo.toml (L201)).
This results in compile errors for environments that are not using
`bevy_render`.
To reproduce the problem, try to build the crate individually for wasm
targets by running `cargo build -p bevy_asset --target
wasm32-unknown-unknown`.
Running `cargo tree -e features --target wasm32-unknown-unknown` helped
diagnose the issue.
## Solution
- **Describe the solution used to achieve the objective above.**
This PR adds the `WorkerGlobalScope` feature to the `web-sys` portion of
`bevy_asset`'s `Cargo.toml`.
It also seems to be the case that `bevy_asset` no longer needs the
`Request` feature, since no code for `Request` is present anymore. I
confirmed that building the crate individually for wasm succeeds without
the feature, so that change is also included here.
This is a little off-topic, but the repository would probably benefit
from some automation around these types of changes, but I'm not sure
what would work there. For example, building each crate individually for
some key targets would work, but is...well, a lot. Happy to follow up if
there is agreement on a good direction.
## Testing
- **Did you test these changes? If so, how?**
- **How can other people (reviewers) test your changes? Is there
anything specific they need to know?**
Building the crate individually for wasm by running `cargo build -p
bevy_asset --target wasm32-unknown-unknown`.
- **Are there any parts that need more testing?**
I don't believe so.
# Objective
Fixes two issues related to #13208.
First, we ensure render resources for a window are always dropped first
to ensure that the `winit::Window` always drops on the main thread when
it is removed from `WinitWindows`. Previously, changes in #12978 caused
the window to drop in the render world, causing issues.
We accomplish this by delaying despawning the window by a frame by
inserting a marker component `ClosingWindow` that indicates the window
has been requested to close and is in the process of closing. The render
world now responds to the equivalent `WindowClosing` event rather than
`WindowCloseed` which now fires after the render resources are
guarunteed to be cleaned up.
Secondly, fixing the above caused (revealed?) that additional events
were being delivered to the the event loop handler after exit had
already been requested: in my testing `RedrawRequested` and
`LoopExiting`. This caused errors to be reported try to send an exit
event on the close channel. There are two options here:
- Guard the handler so no additional events are delivered once the app
is exiting. I ~considered this but worried it might be confusing or bug
prone if in the future someone wants to handle `LoopExiting` or some
other event to clean-up while exiting.~ We are now taking this approach.
- Only send an exit signal if we are not already exiting. ~It doesn't
appear to cause any problems to handle the extra events so this seems
safer.~
Fixing this also appears to have fixed#13231.
Fixes#10260.
## Testing
Tested on mac only.
---
## Changelog
### Added
- A `WindowClosing` event has been added that indicates the window will
be despawned on the next frame.
### Changed
- Windows now close a frame after their exit has been requested.
## Migration Guide
- Ensure custom exit logic does not rely on the app exiting the same
frame as a window is closed.
# Objective
Fixes #13230
## Solution
Uses solution described in #13230
They mention a worry about adding a branch, but I'm not sure there is
one.
This code
```Rust
#[no_mangle]
pub fn next_if_some(num: i32, b: Option<bool>) -> i32 {
num + b.is_some() as i32
}
```
produces this assembly with opt-level 3
```asm
next_if_some:
xor eax, eax
cmp sil, 2
setne al
add eax, edi
ret
```
## Testing
Added test from #13230, tagged it as ignore as it is only useful in
release mode and very slow if you accidentally invoke it in debug mode.
---
## Changelog
Iterationg of ListIter will no longer overflow and wrap around
## Migration Guide
# Objective
I am emboldened by my last small PR and am here with another.
- **Describe the objective or issue this PR addresses.**
It would be nice if `FrameCount` could be used by downstream plugins
that want to use frame data. The example that I have in mind is
[`leafwing_input_playback`](https://github.com/Leafwing-Studios/leafwing_input_playback/issues/29)
which has a [duplicate implementation of
`FrameCount`](https://github.com/Leafwing-Studios/leafwing_input_playback/blob/main/src/frame_counting.rs#L9-L37)
used in several structs which rely on those derives (or otherwise the
higher-level structs would have to implement these traits manually).
That crate, using `FrameCount`, tracks input frames and timestamps and
enables various playback modes.
I am aware that bevy org refrains from deriving lots of unnecessary
stuff on bevy types to avoid compile time creep. It is worth mentioning
the (equally reasonable) alternative that downstream crates _should_
implement some `FrameCount` themselves if they want special behavior
from it.
## Solution
- **Describe the solution used to achieve the objective above.**
I added derives for `PartialEq, Eq, PartialOrd, Ord` and implementations
for `serde::{Deserialize, Serialize}` to `FrameCount`.
## Testing
Manually confirmed that the serde implementation works, but that's all.
Let me know if I should do more here.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
Sometimes it's nice to iterate over all the coordinate axes using
something like `Vec3::AXES`. This was not available for the
corresponding `Dir` types and now it is.
## Solution
We already have things like `Dir2::X`, `Dir3::Z` and so on, so I just
threw them in an array like the vector types do it. I also slightly
refactored the sphere gizmo code to use `Dir3::AXES` and operate on
directions instead of using `Dir3::new_unchecked`.
## Testing
I looked at the sphere in the `3d_gizmos` example and it seems to work,
so I assume I didn't break anything.
# Objective
Unblocks #11659.
Currently the `Reflect` derive macro has to go through a merge process
for each `#[reflect]`/`#[reflet_value]` attribute encountered on a
container type.
Not only is this a bit inefficient, but it also has a soft requirement
that we can compare attributes such that an error can be thrown on
duplicates, invalid states, etc.
While working on #11659 this proved to be challenging due to the fact
that `syn` types don't implement `PartialEq` or `Hash` without enabling
the `extra-traits` feature.
Ideally, we wouldn't have to enable another feature just to accommodate
this one use case.
## Solution
Removed `ContainerAttributes::merge`.
This was a fairly simple change as we could just have the parsing
functions take `&mut self` instead of returning `Self`.
## Testing
CI should build as there should be no user-facing change.
# Objective
Extracts the state mechanisms into a new crate called "bevy_state".
This comes with a few goals:
- state wasn't really an inherent machinery of the ecs system, and so
keeping it within bevy_ecs felt forced
- by mixing it in with bevy_ecs, the maintainability of our more robust
state system was significantly compromised
moving state into a new crate makes it easier to encapsulate as it's own
feature, and easier to read and understand since it's no longer a
single, massive file.
## Solution
move the state-related elements from bevy_ecs to a new crate
## Testing
- Did you test these changes? If so, how? all the automated tests
migrated and passed, ran the pre-existing examples without changes to
validate.
---
## Migration Guide
Since bevy_state is now gated behind the `bevy_state` feature, projects
that use state but don't use the `default-features` will need to add
that feature flag.
Since it is no longer part of bevy_ecs, projects that use bevy_ecs
directly will need to manually pull in `bevy_state`, trigger the
StateTransition schedule, and handle any of the elements that bevy_app
currently sets up.
---------
Co-authored-by: Kristoffer Søholm <k.soeholm@gmail.com>
# Objective
fixes#13224
adds conversions for Vec3 and Vec4 since these appear so often
## Solution
added Covert trait (couldn't think of good name) for [f32; 4], [f32, 3],
Vec4, and Vec3 along with the symmetric implementation
## Changelog
added conversions between arrays and vector to colors and vice versa
#migration
LinearRgba appears to have already had implicit conversions for [f32;4]
and Vec4
# Objective
Finish the `try_apply` implementation started in #6770 by @feyokorenhof.
Supersedes and closes#6770. Closes#6182
## Solution
Add `try_apply` to `Reflect` and implement it in all the places that
implement `Reflect`.
---
## Changelog
Added `try_apply` to `Reflect`.
---------
Co-authored-by: Feyo Korenhof <feyokorenhof@gmail.com>
Co-authored-by: Gino Valente <49806985+MrGVSV@users.noreply.github.com>
# Objective
Currently, the 2d pipeline only has a transparent pass that is used for
everything. I want to have separate passes for opaque/alpha
mask/transparent meshes just like in 3d.
This PR does the basic work to start adding new phases to the 2d
pipeline and get the current setup a bit closer to 3d.
## Solution
- Use `ViewNode` for `MainTransparentPass2dNode`
- Added `Node2d::StartMainPass`, `Node2d::EndMainPass`
- Rename everything to clarify that the main pass is currently the
transparent pass
---
## Changelog
- Added `Node2d::StartMainPass`, `Node2d::EndMainPass`
## Migration Guide
If you were using `Node2d::MainPass` to order your own custom render
node. You now need to order it relative to `Node2d::StartMainPass` or
`Node2d::EndMainPass`.
WebGL 2 doesn't support variable-length uniform buffer arrays. So we
arbitrarily set the length of the visibility ranges field to 64 on that
platform.
---------
Co-authored-by: IceSentry <c.giguere42@gmail.com>
# Objective
There's a TODO comment above the `AssetMetaCheck` enum mentioning this
should have been done in 0.13
## Solution
Do it in 0.14
## Testing
I've checked that all the asset tests compile. I've also run the
asset_processing and asset_settings tests and they both work.
---
## Changelog
### Changed
-
[`AssetMetaCheck`](https://docs.rs/bevy/latest/bevy/asset/enum.AssetMetaCheck.html)
is no longer a resource and is now a field on the
[`AssetPlugin`](https://docs.rs/bevy/latest/bevy/asset/struct.AssetPlugin.html).
## Migration Guide
Changes to how bevy handles asset meta files now need to be specified
when inserting the `AssetPlugin`.
# Objective
- Adds a basic `Extrusion<T: Primitive2d>` shape, suggestion of #10572
## Solution
- Adds `Measured2d` and `Measured3d` traits for getting the
perimeter/area or area/volume of shapes. This allows implementing
`.volume()` and `.area()` for all extrusions `Extrusion<T: Primitive2d +
Measured2d>` within `bevy_math`
- All existing perimeter, area and volume implementations for primitves
have been moved into implementations of `Measured2d` and `Measured3d`
- Shapes should be extruded along the Z-axis since an extrusion of depth
`0.` should be equivalent in everything but name to the base shape
## Caviats
- I am not sure about the naming. `Extrusion<T>` could also be
`Prism<T>` and the `MeasuredNd` could also be something like
`MeasuredPrimitiveNd`. If you have any other suggestions, please fell
free to share them :)
## Future work
This PR adds a basic `Extrusion` shape and does not implement a lot of
things you might want it to. Some of the future possibilities include:
- [ ] bounding for extrusions
- [ ] making extrusions work with gizmos
- [ ] meshing
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- Some of the "large" crates have sub-crates, usually for things such as
macros.
- For an example, see [`bevy_ecs_macros` at
`bevy_ecs/macros`](4f9f987099/crates/bevy_ecs/macros).
- The one crate that does not follow this convention is
[`bevy_reflect_derive`](4f9f987099/crates/bevy_reflect/bevy_reflect_derive),
which is in the `bevy_reflect/bevy_reflect_derive` folder and not
`bevy_reflect/derive` or `bevy_reflect/macros`.
## Solution
- Rename folder `bevy_reflect_derive` to `derive`.
- I chose to use `derive` instead of `macros` because the crate name
itself ends in `_derive`. (One of only two crates to actually use this
convention, funnily enough.)
## Testing
- Build and test `bevy_reflect` and `bevy_reflect_derive`.
- Apply the following patch to `publish.sh` to run it in `--dry-run`
mode, to test that the path has been successfully updated:
- If you have any security concerns about applying random diffs, feel
free to skip this step. Worst case scenario it fails and Cart has to
manually publish a few crates.
```bash
# Apply patch to make `publish.sh` *not* actually publish anything.
git apply path/to/foo.patch
# Make `publish.sh` executable.
chmod +x tools/publish.sh
# Execute `publish.sh`.
./tools/publish.sh
```
```patch
diff --git a/tools/publish.sh b/tools/publish.sh
index b020bad28..fbcc09281 100644
--- a/tools/publish.sh
+++ b/tools/publish.sh
@@ -49,7 +49,7 @@ crates=(
if [ -n "$(git status --porcelain)" ]; then
echo "You have local changes!"
- exit 1
+ # exit 1
fi
pushd crates
@@ -61,15 +61,15 @@ do
cp ../LICENSE-APACHE "$crate"
pushd "$crate"
git add LICENSE-MIT LICENSE-APACHE
- cargo publish --no-verify --allow-dirty
+ cargo publish --no-verify --allow-dirty --dry-run
popd
- sleep 20
+ # sleep 20
done
popd
echo "Publishing root crate"
-cargo publish --allow-dirty
+cargo publish --allow-dirty --dry-run
echo "Cleaning local state"
git reset HEAD --hard
```
---
## Changelog
- Moved `bevy_reflect_derive` from
`crates/bevy_reflect/bevy_reflect_derive` to
`crates/bevy_reflect/derive`.
Copied almost verbatim from the volumetric fog PR
# Objective
- Managing mesh view layouts is complicated
## Solution
- Extract it to it's own struct
- This was done as part of #13057 and is copied almost verbatim. I
wanted to keep this part of the PR it's own atomic commit in case we
ever have to revert fog or run a bisect. This change is good whether or
not we have volumetric fog.
Co-Authored-By: @pcwalton
# Objective
I'm adopting #9122 and pulling some of the non controversial changes out
to make the final pr easier to review.
This pr removes the NonSend resource usage from `bevy_log`.
## Solution
`tracing-chrome` uses a guard that is stored in the world, so that when
it is dropped the json log file is written out. The guard is Send +
!Sync, so we can store it in a SyncCell to hold it in a regular resource
instead of using a non send resource.
## Testing
Tested by running an example with `-F tracing chrome` and making sure
there weren't any errors and the json file was created.
---
## Changelog
- replaced `bevy_log`'s usage of a non send resource.
Switched the return type from `Vec3` to `Dir3` for directional axis
methods within the `GlobalTransform` component.
## Migration Guide
The `GlobalTransform` component's directional axis methods (e.g.,
`right()`, `left()`, `up()`, `down()`, `back()`, `forward()`) have been
updated from returning `Vec3` to `Dir3`.
# Objective
Fixes#12966
## Solution
Renaming multi_threaded feature to match snake case
## Migration Guide
Bevy feature multi-threaded should be refered to multi_threaded from now
on.
Clearcoat is a separate material layer that represents a thin
translucent layer of a material. Examples include (from the [Filament
spec]) car paint, soda cans, and lacquered wood. This commit implements
support for clearcoat following the Filament and Khronos specifications,
marking the beginnings of support for multiple PBR layers in Bevy.
The [`KHR_materials_clearcoat`] specification describes the clearcoat
support in glTF. In Blender, applying a clearcoat to the Principled BSDF
node causes the clearcoat settings to be exported via this extension. As
of this commit, Bevy parses and reads the extension data when present in
glTF. Note that the `gltf` crate has no support for
`KHR_materials_clearcoat`; this patch therefore implements the JSON
semantics manually.
Clearcoat is integrated with `StandardMaterial`, but the code is behind
a series of `#ifdef`s that only activate when clearcoat is present.
Additionally, the `pbr_feature_layer_material_textures` Cargo feature
must be active in order to enable support for clearcoat factor maps,
clearcoat roughness maps, and clearcoat normal maps. This approach
mirrors the same pattern used by the existing transmission feature and
exists to avoid running out of texture bindings on platforms like WebGL
and WebGPU. Note that constant clearcoat factors and roughness values
*are* supported in the browser; only the relatively-less-common maps are
disabled on those platforms.
This patch refactors the lighting code in `StandardMaterial`
significantly in order to better support multiple layers in a natural
way. That code was due for a refactor in any case, so this is a nice
improvement.
A new demo, `clearcoat`, has been added. It's based on [the
corresponding three.js demo], but all the assets (aside from the skybox
and environment map) are my original work.
[Filament spec]:
https://google.github.io/filament/Filament.html#materialsystem/clearcoatmodel
[`KHR_materials_clearcoat`]:
https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Khronos/KHR_materials_clearcoat/README.md
[the corresponding three.js demo]:
https://threejs.org/examples/webgl_materials_physical_clearcoat.html
## Changelog
### Added
* `StandardMaterial` now supports a clearcoat layer, which represents a
thin translucent layer over an underlying material.
* The glTF loader now supports the `KHR_materials_clearcoat` extension,
representing materials with clearcoat layers.
## Migration Guide
* The lighting functions in the `pbr_lighting` WGSL module now have
clearcoat parameters, if `STANDARD_MATERIAL_CLEARCOAT` is defined.
* The `R` reflection vector parameter has been removed from some
lighting functions, as it was unused.
# Objective
- `DynamicUniformBuffer` tries to create a buffer as soon as the changed
flag is set to true. This doesn't work correctly when the buffer wasn't
already created. This currently creates a crash because it's trying to
create a buffer of size 0 if the flag is set but there's no buffer yet.
## Solution
- Don't create a changed buffer until there's data that needs to be
written to a buffer.
## Testing
- run `cargo run --example scene_viewer` and see that it doesn't crash
anymore
Fixes#13235
# Objective
Documentation should mention the two plugins required for your custom
`CameraProjection` to work.
## Solution
Documented!
---
I tried linking to `bevy_pbr::PbrProjectionPlugin` from
`bevy_render:📷:CameraProjection` but it wasn't in scope. Is there
a trick to it?
# Objective
- Per-cluster (instance of a meshlet) data upload is ridiculously
expensive in both CPU and GPU time (8 bytes per cluster, millions of
clusters, you very quickly run into PCIE bandwidth maximums, and lots of
CPU-side copies and malloc).
- We need to be uploading only per-instance/entity data. Anything else
needs to be done on the GPU.
## Solution
- Per instance, upload:
- `meshlet_instance_meshlet_counts_prefix_sum` - An exclusive prefix sum
over the count of how many clusters each instance has.
- `meshlet_instance_meshlet_slice_starts` - The starting index of the
meshlets for each instance within the `meshlets` buffer.
- A new `fill_cluster_buffers` pass once at the start of the frame has a
thread per cluster, and finds its instance ID and meshlet ID via a
binary search of `meshlet_instance_meshlet_counts_prefix_sum` to find
what instance it belongs to, and then uses that plus
`meshlet_instance_meshlet_slice_starts` to find what number meshlet
within the instance it is. The shader then writes out the per-cluster
instance/meshlet ID buffers for later passes to quickly read from.
- I've gone from 45 -> 180 FPS in my stress test scene, and saved
~30ms/frame of overall CPU/GPU time.
# Objective
in response to [13222](https://github.com/bevyengine/bevy/issues/13222)
## Solution
The Image trait was already re-exported in bevy_render/src/lib.rs, So I
added it inline there.
## Testing
Confirmed that it does compile. Simple change, shouldn't cause any
bugs/regressions.
# Objective
`bevy_pbr/utils.wgsl` shader file contains mathematical constants and
color conversion functions. Both of those should be accessible without
enabling `bevy_pbr` feature. For example, tonemapping can be done in non
pbr scenario, and it uses color conversion functions.
Fixes#13207
## Solution
* Move mathematical constants (such as PI, E) from
`bevy_pbr/src/render/utils.wgsl` into `bevy_render/src/maths.wgsl`
* Move color conversion functions from `bevy_pbr/src/render/utils.wgsl`
into new file `bevy_render/src/color_operations.wgsl`
## Testing
Ran multiple examples, checked they are working:
* tonemapping
* color_grading
* 3d_scene
* animated_material
* deferred_rendering
* 3d_shapes
* fog
* irradiance_volumes
* meshlet
* parallax_mapping
* pbr
* reflection_probes
* shadow_biases
* 2d_gizmos
* light_gizmos
---
## Changelog
* Moved mathematical constants (such as PI, E) from
`bevy_pbr/src/render/utils.wgsl` into `bevy_render/src/maths.wgsl`
* Moved color conversion functions from `bevy_pbr/src/render/utils.wgsl`
into new file `bevy_render/src/color_operations.wgsl`
## Migration Guide
In user's shader code replace usage of mathematical constants from
`bevy_pbr::utils` to the usage of the same constants from
`bevy_render::maths`.
# Objective
- Add auto exposure/eye adaptation to the bevy render pipeline.
- Support features that users might expect from other engines:
- Metering masks
- Compensation curves
- Smooth exposure transitions
This PR is based on an implementation I already built for a personal
project before https://github.com/bevyengine/bevy/pull/8809 was
submitted, so I wasn't able to adopt that PR in the proper way. I've
still drawn inspiration from it, so @fintelia should be credited as
well.
## Solution
An auto exposure compute shader builds a 64 bin histogram of the scene's
luminance, and then adjusts the exposure based on that histogram. Using
a histogram allows the system to ignore outliers like shadows and
specular highlights, and it allows to give more weight to certain areas
based on a mask.
---
## Changelog
- Added: AutoExposure plugin that allows to adjust a camera's exposure
based on it's scene's luminance.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- Follow-up of #13184 :)
- We use `ui_test` to test compiler errors for our custom macros.
- There are four crates related to compile fail tests
- `bevy_ecs_compile_fail_tests`, `bevy_macros_compile_fail_tests`, and
`bevy_reflect_compile_fail_tests`, which actually test the macros.
-
[`bevy_compile_test_utils`](64c1c65783/crates/bevy_compile_test_utils),
which provides helpers and common patterns for these tests.
- All of these crates reside within the `crates` directory.
- This can be confusing, especially for newcomers. All of the other
folders in `crates` are actual published libraries, except for these 4.
## Solution
- Move all compile fail tests to a `compile_fail` folder under their
corresponding crate.
- E.g. `crates/bevy_ecs_compile_fail_tests` would be moved to
`crates/bevy_ecs/compile_fail`.
- Move `bevy_compile_test_utils` to `tools/compile_fail_utils`.
There are a few benefits to this approach:
1. An internal testing detail is less intrusive (and confusing) for
those who just want to browse the public Bevy interface.
2. Follows a pre-existing approach of organizing related crates inside a
larger crate's folder.
- See `bevy_gizmos/macros` for an example.
4. Makes consistent the terms `compile_test`, `compile_fail`, and
`compile_fail_test` in code. It's all just `compile_fail` now, because
we are specifically testing the error messages on compiler failures.
- To be clear it can still be referred to by these terms in comments and
speech, just the names of the crates and the CI command are now
consistent.
## Testing
Run the compile fail CI command:
```shell
cargo run -p ci -- compile-fail
```
If it still passes, then my refactor was successful.
# Objective
Resolves#13185
## Solution
Move the following methods from `sub_app` to the `Schedules` resource,
and use them in the sub app:
- `add_systems`
- `configure_sets`
- `ignore_ambiguity`
Add an `entry(&mut self, label: impl ScheduleLabel) -> &mut Schedule`
method to the `Schedules` resource, which returns a mutable reference to
the schedule associated with the label, and creates one if it doesn't
already exist. (build on top of the `entry(..).or_insert_with(...)`
pattern in `HashMap`.
## Testing
- Did you test these changes? If so, how? Added 4 unit tests to the
`schedule.rs` - one that validates adding a system to an existing
schedule, one that validates adding a system to a new one, one that
validates configuring sets on an existing schedule, and one that
validates configuring sets on a new schedule.
- I didn't add tests for `entry` since the previous 4 tests use
functions that rely on it.
- I didn't test `ignore_ambiguity` since I didn't see examples of it's
use, and am not familiar enough with it to know how to set up a good
test for it. However, it relies on the `entry` method as well, so it
should work just like the other 2 methods.
This is an adoption of #12670 plus some documentation fixes. See that PR
for more details.
---
## Changelog
* Renamed `BufferVec` to `RawBufferVec` and added a new `BufferVec`
type.
## Migration Guide
`BufferVec` has been renamed to `RawBufferVec` and a new similar type
has taken the `BufferVec` name.
---------
Co-authored-by: Patrick Walton <pcwalton@mimiga.net>
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: IceSentry <IceSentry@users.noreply.github.com>
# Objective
~Returning a app exit code from the winit runner is complicated and
deadlock prone.~
The code to return a app exit code is rather shoddy. It's use of mutex
is redundant, It uses unwrap when not required and can be broken by a
maintainer simply forgetting to set a value.
## Solution
Switch to using a channel.
- Deals with situations in which a event loop exits unexpectedly.
- Never panics. Even in extreme cases.
Implement visibility ranges, also known as hierarchical levels of detail
(HLODs).
This commit introduces a new component, `VisibilityRange`, which allows
developers to specify camera distances in which meshes are to be shown
and hidden. Hiding meshes happens early in the rendering pipeline, so
this feature can be used for level of detail optimization. Additionally,
this feature is properly evaluated per-view, so different views can show
different levels of detail.
This feature differs from proper mesh LODs, which can be implemented
later. Engines generally implement true mesh LODs later in the pipeline;
they're typically more efficient than HLODs with GPU-driven rendering.
However, mesh LODs are more limited than HLODs, because they require the
lower levels of detail to be meshes with the same vertex layout and
shader (and perhaps the same material) as the original mesh. Games often
want to use objects other than meshes to replace distant models, such as
*octahedral imposters* or *billboard imposters*.
The reason why the feature is called *hierarchical level of detail* is
that HLODs can replace multiple meshes with a single mesh when the
camera is far away. This can be useful for reducing drawcall count. Note
that `VisibilityRange` doesn't automatically propagate down to children;
it must be placed on every mesh.
Crossfading between different levels of detail is supported, using the
standard 4x4 ordered dithering pattern from [1]. The shader code to
compute the dithering patterns should be well-optimized. The dithering
code is only active when visibility ranges are in use for the mesh in
question, so that we don't lose early Z.
Cascaded shadow maps show the HLOD level of the view they're associated
with. Point light and spot light shadow maps, which have no CSMs,
display all HLOD levels that are visible in any view. To support this
efficiently and avoid doing visibility checks multiple times, we
precalculate all visible HLOD levels for each entity with a
`VisibilityRange` during the `check_visibility_range` system.
A new example, `visibility_range`, has been added to the tree, as well
as a new low-poly version of the flight helmet model to go with it. It
demonstrates use of the visibility range feature to provide levels of
detail.
[1]: https://en.wikipedia.org/wiki/Ordered_dithering#Threshold_map
[^1]: Unreal doesn't have a feature that exactly corresponds to
visibility ranges, but Unreal's HLOD system serves roughly the same
purpose.
## Changelog
### Added
* A new `VisibilityRange` component is available to conditionally enable
entity visibility at camera distances, with optional crossfade support.
This can be used to implement different levels of detail (LODs).
## Screenshots
High-poly model:
Low-poly model up close:
Crossfading between the two:
---------
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
# Objective
- Current config file is hard to extend
## Solution
- Instead of an hard coded list of field, the file now has a list of
`(frame, event)`, and will deal with know events (exiting or taking a
screenshot), or send an event for others that can be dealt by third
party plugins
# Objective
- I've been using the `texture_binding_array` example as a base to use
multiple textures in meshes in my program
- I only realised once I was deep in render code that these helpers
existed to create layouts
- I wish I knew the existed earlier because the alternative (filling in
every struct field) is so much more verbose
## Solution
- Use `BindGroupLayoutEntries::with_indices` to teach users that the
helper exists
- Also fix typo which should be `texture_2d`.
## Alternatives considered
- Just leave it as is to teach users about every single struct field
- However, leaving as is leaves users writing roughly 29 lines versus
roughly 2 lines for 2 entries and I'd prefer the 2 line approach
## Testing
Ran the example locally and compared before and after.
Before:
<img width="1280" alt="image"
src="https://github.com/bevyengine/bevy/assets/135186256/f5897210-2560-4110-b92b-85497be9023c">
After:
<img width="1279" alt="image"
src="https://github.com/bevyengine/bevy/assets/135186256/8d13a939-b1ce-4a49-a9da-0b1779c8cb6a">
Co-authored-by: mgi388 <>
# Objective
- Simplifies/clarifies the winit loop.
- Fixes#12612.
## Solution
The Winit loop runs following this flow:
* NewEvents
* Any number of other events, that can be 0, including RequestRedraw
* AboutToWait
Bevy also uses the UpdateMode, to define how the next loop has to run.
It can be essentially:
* Continuous, using ControlFlow::Wait for windowed apps, and
ControlFlow::Poll for windowless apps
* Reactive/ReactiveLowPower, using ControlFlow::WaitUntil with a
specific wait delay
The changes are made to follow this pattern, so that
* NewEvents define if the WaitUntil has been canceled because we
received a Winit event.
* AboutToWait:
* checks if the window has to be redrawn
* otherwise calls app.update() if the WaitUntil timeout has elapsed
* updates the ControlFlow accordingly
To make the code more logical:
* AboutToWait checks if any Bevy's RequestRedraw event has been emitted
* create_windows is run every cycle, at the beginning of the loop
* the ActiveState (that could be renamed ActivityState) is updated in
AboutToWait, symmetrically for WillSuspend/WillResume
* the AppExit events are checked every loop cycle, to exit the app early
## Platform-specific testing
- [x] Windows
- [x] MacOs
- [x] Linux (x11)
- [x] Linux (Wayland)
- [x] Android
- [x] iOS
- [x] WASM/WebGL2 (Chrome)
- [x] WASM/WebGL2 (Firefox)
- [x] WASM/WebGL2 (Safari)
- [x] WASM/WebGpu (Chrome)
---------
Co-authored-by: François <francois.mockers@vleue.com>
## Summary/Description
This PR extends states to allow support for a wider variety of state
types and patterns, by providing 3 distinct types of state:
- Standard [`States`] can only be changed by manually setting the
[`NextState<S>`] resource. These states are the baseline on which the
other state types are built, and can be used on their own for many
simple patterns. See the [state
example](https://github.com/bevyengine/bevy/blob/latest/examples/ecs/state.rs)
for a simple use case - these are the states that existed so far in
Bevy.
- [`SubStates`] are children of other states - they can be changed
manually using [`NextState<S>`], but are removed from the [`World`] if
the source states aren't in the right state. See the [sub_states
example](https://github.com/lee-orr/bevy/blob/derived_state/examples/ecs/sub_states.rs)
for a simple use case based on the derive macro, or read the trait docs
for more complex scenarios.
- [`ComputedStates`] are fully derived from other states - they provide
a [`compute`](ComputedStates::compute) method that takes in the source
states and returns their derived value. They are particularly useful for
situations where a simplified view of the source states is necessary -
such as having an `InAMenu` computed state derived from a source state
that defines multiple distinct menus. See the [computed state
example](https://github.com/lee-orr/bevy/blob/derived_state/examples/ecs/computed_states.rscomputed_states.rs)
to see a sampling of uses for these states.
# Objective
This PR is another attempt at allowing Bevy to better handle complex
state objects in a manner that doesn't rely on strict equality. While my
previous attempts (https://github.com/bevyengine/bevy/pull/10088 and
https://github.com/bevyengine/bevy/pull/9957) relied on complex matching
capacities at the point of adding a system to application, this one
instead relies on deterministically deriving simple states from more
complex ones.
As a result, it does not require any special macros, nor does it change
any other interactions with the state system once you define and add
your derived state. It also maintains a degree of distinction between
`State` and just normal application state - your derivations have to end
up being discreet pre-determined values, meaning there is less of a
risk/temptation to place a significant amount of logic and data within a
given state.
### Addition - Sub States
closes#9942
After some conversation with Maintainers & SMEs, a significant concern
was that people might attempt to use this feature as if it were
sub-states, and find themselves unable to use it appropriately. Since
`ComputedState` is mainly a state matching feature, while `SubStates`
are more of a state mutation related feature - but one that is easy to
add with the help of the machinery introduced by `ComputedState`, it was
added here as well. The relevant discussion is here:
https://discord.com/channels/691052431525675048/1200556329803186316
## Solution
closes#11358
The solution is to create a new type of state - one implementing
`ComputedStates` - which is deterministically tied to one or more other
states. Implementors write a function to transform the source states
into the computed state, and it gets triggered whenever one of the
source states changes.
In addition, we added the `FreelyMutableState` trait , which is
implemented as part of the derive macro for `States`. This allows us to
limit use of `NextState<S>` to states that are actually mutable,
preventing mis-use of `ComputedStates`.
---
## Changelog
- Added `ComputedStates` trait
- Added `FreelyMutableState` trait
- Converted `NextState` resource to an Enum, with `Unchanged` and
`Pending`
- Added `App::add_computed_state::<S: ComputedStates>()`, to allow for
easily adding derived states to an App.
- Moved the `StateTransition` schedule label from `bevy_app` to
`bevy_ecs` - but maintained the export in `bevy_app` for continuity.
- Modified the process for updating states. Instead of just having an
`apply_state_transition` system that can be added anywhere, we now have
a multi-stage process that has to run within the `StateTransition`
label. First, all the state changes are calculated - manual transitions
rely on `apply_state_transition`, while computed transitions run their
computation process before both call `internal_apply_state_transition`
to apply the transition, send out the transition event, trigger
dependent states, and record which exit/transition/enter schedules need
to occur. Once all the states have been updated, the transition
schedules are called - first the exit schedules, then transition
schedules and finally enter schedules.
- Added `SubStates` trait
- Adjusted `apply_state_transition` to be a no-op if the `State<S>`
resource doesn't exist
## Migration Guide
If the user accessed the NextState resource's value directly or created
them from scratch they will need to adjust to use the new enum variants:
- if they created a `NextState(Some(S))` - they should now use
`NextState::Pending(S)`
- if they created a `NextState(None)` -they should now use
`NextState::Unchanged`
- if they matched on the `NextState` value, they would need to make the
adjustments above
If the user manually utilized `apply_state_transition`, they should
instead use systems that trigger the `StateTransition` schedule.
---
## Future Work
There is still some future potential work in the area, but I wanted to
keep these potential features and changes separate to keep the scope
here contained, and keep the core of it easy to understand and use.
However, I do want to note some of these things, both as inspiration to
others and an illustration of what this PR could unlock.
- `NextState::Remove` - Now that the `State` related mechanisms all
utilize options (#11417), it's fairly easy to add support for explicit
state removal. And while `ComputedStates` can add and remove themselves,
right now `FreelyMutableState`s can't be removed from within the state
system. While it existed originally in this PR, it is a different
question with a separate scope and usability concerns - so having it as
it's own future PR seems like the best approach. This feature currently
lives in a separate branch in my fork, and the differences between it
and this PR can be seen here: https://github.com/lee-orr/bevy/pull/5
- `NextState::ReEnter` - this would allow you to trigger exit & entry
systems for the current state type. We can potentially also add a
`NextState::ReEnterRecirsive` to also re-trigger any states that depend
on the current one.
- More mechanisms for `State` updates - This PR would finally make
states that aren't a set of exclusive Enums useful, and with that comes
the question of setting state more effectively. Right now, to update a
state you either need to fully create the new state, or include the
`Res<Option<State<S>>>` resource in your system, clone the state, mutate
it, and then use `NextState.set(my_mutated_state)` to make it the
pending next state. There are a few other potential methods that could
be implemented in future PRs:
- Inverse Compute States - these would essentially be compute states
that have an additional (manually defined) function that can be used to
nudge the source states so that they result in the computed states
having a given value. For example, you could use set the `IsPaused`
state, and it would attempt to pause or unpause the game by modifying
the `AppState` as needed.
- Closure-based state modification - this would involve adding a
`NextState.modify(f: impl Fn(Option<S> -> Option<S>)` method, and then
you can pass in closures or function pointers to adjust the state as
needed.
- Message-based state modification - this would involve either creating
states that can respond to specific messages, similar to Elm or Redux.
These could either use the `NextState` mechanism or the Event mechanism.
- ~`SubStates` - which are essentially a hybrid of computed and manual
states. In the simplest (and most likely) version, they would work by
having a computed element that determines whether the state should
exist, and if it should has the capacity to add a new version in, but
then any changes to it's content would be freely mutated.~ this feature
is now part of this PR. See above.
- Lastly, since states are getting more complex there might be value in
moving them out of `bevy_ecs` and into their own crate, or at least out
of the `schedule` module into a `states` module. #11087
As mentioned, all these future work elements are TBD and are explicitly
not part of this PR - I just wanted to provide them as potential
explorations for the future.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Marcel Champagne <voiceofmarcel@gmail.com>
Co-authored-by: MiniaczQ <xnetroidpl@gmail.com>
# Objective
- `README.md` is a common file that usually gives an overview of the
folder it is in.
- When on <https://crates.io>, `README.md` is rendered as the main
description.
- Many crates in this repository are lacking `README.md` files, which
makes it more difficult to understand their purpose.
<img width="1552" alt="image"
src="https://github.com/bevyengine/bevy/assets/59022059/78ebf91d-b0c4-4b18-9874-365d6310640f">
- There are also a few inconsistencies with `README.md` files that this
PR and its follow-ups intend to fix.
## Solution
- Create a `README.md` file for all crates that do not have one.
- This file only contains the title of the crate (underscores removed,
proper capitalization, acronyms expanded) and the <https://shields.io>
badges.
- Remove the `readme` field in `Cargo.toml` for `bevy` and
`bevy_reflect`.
- This field is redundant because [Cargo automatically detects
`README.md`
files](https://doc.rust-lang.org/cargo/reference/manifest.html#the-readme-field).
The field is only there if you name it something else, like `INFO.md`.
- Fix capitalization of `bevy_utils`'s `README.md`.
- It was originally `Readme.md`, which is inconsistent with the rest of
the project.
- I created two commits renaming it to `README.md`, because Git appears
to be case-insensitive.
- Expand acronyms in title of `bevy_ptr` and `bevy_utils`.
- In the commit where I created all the new `README.md` files, I
preferred using expanded acronyms in the titles. (E.g. "Bevy Developer
Tools" instead of "Bevy Dev Tools".)
- This commit changes the title of existing `README.md` files to follow
the same scheme.
- I do not feel strongly about this change, please comment if you
disagree and I can revert it.
- Add <https://shields.io> badges to `bevy_time` and `bevy_transform`,
which are the only crates currently lacking them.
---
## Changelog
- Added `README.md` files to all crates missing it.
# Objective
- Update glam version requirement to latest version.
## Solution
- Updated `glam` version requirement from 0.25 to 0.27.
- Updated `encase` and `encase_derive_impl` version requirement from 0.7
to 0.8.
- Updated `hexasphere` version requirement from 10.0 to 12.0.
- Breaking changes from glam changelog:
- [0.26.0] Minimum Supported Rust Version bumped to 1.68.2 for impl
From<bool> for {f32,f64} support.
- [0.27.0] Changed implementation of vector fract method to match the
Rust implementation instead of the GLSL implementation, that is self -
self.trunc() instead of self - self.floor().
---
## Migration Guide
- When using `glam` exports, keep in mind that `vector` `fract()` method
now matches Rust implementation (that is `self - self.trunc()` instead
of `self - self.floor()`). If you want to use the GLSL implementation
you should now use `fract_gl()`.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
I'm reading through the schedule code, which is somewhat lacking
documentation.
I've been adding some docstrings to help me understand the code; I feel
like some of them could be useful to also help others read this code.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- Make `Result<T, E>` implement Reflect such that it is an Enum rather
than a Value
- Fixes#13178
## Solution
- Use the correct macro
## Testing
- Did you test these changes?
I tried it out locally, and it does what it says on the tin. Not sure
how to test it in context of the crate?
---
## Changelog
### Changed
- Result now uses `ReflectKind::Enum` rather than `ReflectKind::Value`,
allowing for inspection of its constituents
## Migration Guide
`Result<T, E>` has had its `Reflect` implementation changed to align it
with `Option<T>` and its intended semantics: A carrier of either an `Ok`
or `Err` value, and the ability to access it. To achieve this it is no
longer a `ReflectKind::Value` but rather a `ReflectKind::Enum` and as
such carries these changes with it:
For `Result<T, E>`
- Both `T` and `E` no longer require to be `Clone` and now require to be
`FromReflect`
- `<Result<T, E> as Reflect>::reflect_*` now returns a
`ReflectKind::Enum`, so any code that previously relied on it being a
`Value` kind will have to be adapted.
- `Result<T, E>` now implements `Enum`
Since the migration is highly dependent on the previous usage, no
automatic upgrade path can be given.
Signed-off-by: Marcel Müller <neikos@neikos.email>
This commit expands Bevy's existing tonemapping feature to a complete
set of filmic color grading tools, matching those of engines like Unity,
Unreal, and Godot. The following features are supported:
* White point adjustment. This is inspired by Unity's implementation of
the feature, but simplified and optimized. *Temperature* and *tint*
control the adjustments to the *x* and *y* chromaticity values of [CIE
1931]. Following Unity, the adjustments are made relative to the [D65
standard illuminant] in the [LMS color space].
* Hue rotation. This simply converts the RGB value to [HSV], alters the
hue, and converts back.
* Color correction. This allows the *gamma*, *gain*, and *lift* values
to be adjusted according to the standard [ASC CDL combined function].
* Separate color correction for shadows, midtones, and highlights.
Blender's source code was used as a reference for the implementation of
this. The midtone ranges can be adjusted by the user. To avoid abrupt
color changes, a small crossfade is used between the different sections
of the image, again following Blender's formulas.
A new example, `color_grading`, has been added, offering a GUI to change
all the color grading settings. It uses the same test scene as the
existing `tonemapping` example, which has been factored out into a
shared glTF scene.
[CIE 1931]: https://en.wikipedia.org/wiki/CIE_1931_color_space
[D65 standard illuminant]:
https://en.wikipedia.org/wiki/Standard_illuminant#Illuminant_series_D
[LMS color space]: https://en.wikipedia.org/wiki/LMS_color_space
[HSV]: https://en.wikipedia.org/wiki/HSL_and_HSV
[ASC CDL combined function]:
https://en.wikipedia.org/wiki/ASC_CDL#Combined_Function
## Changelog
### Added
* Many new filmic color grading options have been added to the
`ColorGrading` component.
## Migration Guide
* `ColorGrading::gamma` and `ColorGrading::pre_saturation` are now set
separately for the `shadows`, `midtones`, and `highlights` sections. You
can migrate code with the `ColorGrading::all_sections` and
`ColorGrading::all_sections_mut` functions, which access and/or update
all sections at once.
* `ColorGrading::post_saturation` and `ColorGrading::exposure` are now
fields of `ColorGrading::global`.
## Screenshots
# Objective
The `Events` containerr should be reflectable, in order to make dev
tools that examine its state more useful.
Fixes#13148.
## Solution
- Add a `Reflect` derive to `Events`, gated behind the `bevy_reflect`
feature
- Add `Reflect` to the contained types to make everything compile.
---------
Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com>
# Objective
- Enables support for `Display::Block`
- Enables support for `Overflow::Hidden`
- Allows for cleaner integration with text, image and other content
layout.
- Unblocks https://github.com/bevyengine/bevy/pull/8104
- Unlocks the possibility of Bevy creating a custom layout tree over
which Taffy operates.
- Enables #8808 / #10193 to remove a Mutex around the font system.
## Todo
- [x] ~Fix rendering of text/images to account for padding/border on
nodes (should size/position to content box rather than border box)~ In
order get this into a mergeable state this PR instead zeroes out
padding/border when syncing leaf node styles into Taffy to preserve the
existing behaviour. https://github.com/bevyengine/bevy/issues/6879 can
be fixed in a followup PR.
## Solution
- Update the version of Taffy
- Update code to work with the new version
Note: Taffy 0.4 has not yet been released. This PR is being created in
advance of the release to ensure that there are no blockers to upgrading
once the release occurs.
---
## Changelog
- Bevy now supports the `Display::Block` and `Overflow::Hidden` styles.
# Objective
A `RawWindowHandle` is only valid as long as the window it was retrieved
from is alive. Extend the lifetime of the window, so that the
`RawWindowHandle` doesn't outlive it, and bevy doesn't crash when
closing a window a pipelined renderer is drawing to.
- Fix#11236
- Fix#11150
- Fix#11734
- Alternative to / Closes#12524
## Solution
Introduce a `WindowWrapper` that takes ownership of the window. Require
it to be used when constructing a `RawHandleWrapper`. This forces
windowing backends to store their window in this wrapper.
The `WindowWrapper` is implemented by storing the window in an `Arc<dyn
Any + Send + Sync>`.
We use dynamic dispatch here because we later want the
`RawHandleWrapper` to be able dynamically hold a reference to any
windowing backend's window.
But alas, the `WindowWrapper` itself is still practically invisible to
windowing backends, because it implements `Deref` to the underlying
window, by storing its type in a `PhantomData`.
---
## Changelog
### Added
- Added `WindowWrapper`, which windowing backends are now required to
use to store their underlying window.
### Fixed
- Fixed a safety problem which caused crashes when closing bevy windows
when using pipelined rendering.
## Migration Guide
- Windowing backends now need to store their window in the new
`WindowWrapper`.
In #12889, I mistakenly started dropping unbatchable sorted items on the
floor instead of giving them solitary batches. This caused the objects
in the `shader_instancing` demo to stop showing up. This patch fixes the
issue by giving those items their own batches as expected.
Fixes#13130.
# Objective
- Partially resolves#12639.
## Solution
- Deprecate `ReceivedCharacter`.
- Replace `ReceivedCharacter` with `KeyboardInput` in the relevant
examples.
## Migration Guide
- `ReceivedCharacter` is now deprecated, use `KeyboardInput` instead.
- Before:
```rust
fn listen_characters(events: EventReader<ReceivedCharacter>) {
for event in events.read() {
info!("{}", event.char);
}
}
```
After:
```rust
fn listen_characters(events: EventReader<KeyboardInput>) {
for event in events.read() {
// Only check for characters when the key is pressed.
if event.state == ButtonState::Released {
continue;
}
// Note that some keys such as `Space` and `Tab` won't be detected as
before.
// Instead, check for them with `Key::Space` and `Key::Tab`.
if let Key::Character(character) = &event.logical_key {
info!("{}", character);
}
}
}
```
---------
Co-authored-by: Mike <mike.hsu@gmail.com>
# Objective
- `from_reflect_or_world` is an internal utilty used in the
implementations of `ReflectComponent` and `ReflectBundle` to create a
`T` given a `&dyn Reflect` by trying to use `FromReflect`, and if that
fails it falls back to `ReflectFromWorld`
- reflecting `FromWorld` is not intuitive though: often it is implicitly
implemented by deriving `Default` so people might not even be aware of
it.
- the panic messages mentioning `ReflectFromWorld` are not directly
correlated to what the user would have to do (reflect `FromWorld`)
## Solution
- Also check for `ReflectDefault` in addition to `ReflectFromWorld`.
- Change the panic messages to mention the reflected trait rather than
the `Reflect*` types.
---
## Changelog
- `ReflectComponent` and `ReflectBundle` no longer require `T:
FromReflect` but instead only `T: Reflect`.
- `ReflectComponent` and `ReflectBundle` will also work with types that
only reflected `Default` and not `FromWorld`.
## Migration Guide
- `ReflectBundle::insert` now requires an additional `&TypeRegistry`
parameter.
# Objective
I have been trying to check for the existing of some plugins via
`App::is_plugin_added` to conditionally run some behaviour in the
`Plugin::finish` part of my plugin, before realizing that the plugin
registry is actually not available during this step.
This is because the `App::is_plugin_added` using the plugin registry to
check for previous registration.
## Solution
- Switch the `App::is_plugin_added` to use the list of plugin names to
check for previous registrations
- Add a unit test showcasing that `App::is_plugin_added` works during
`Plugin::finish`
This commit implements opt-in GPU frustum culling, built on top of the
infrastructure in https://github.com/bevyengine/bevy/pull/12773. To
enable it on a camera, add the `GpuCulling` component to it. To
additionally disable CPU frustum culling, add the `NoCpuCulling`
component. Note that adding `GpuCulling` without `NoCpuCulling`
*currently* does nothing useful. The reason why `GpuCulling` doesn't
automatically imply `NoCpuCulling` is that I intend to follow this patch
up with GPU two-phase occlusion culling, and CPU frustum culling plus
GPU occlusion culling seems like a very commonly-desired mode.
Adding the `GpuCulling` component to a view puts that view into
*indirect mode*. This mode makes all drawcalls indirect, relying on the
mesh preprocessing shader to allocate instances dynamically. In indirect
mode, the `PreprocessWorkItem` `output_index` points not to a
`MeshUniform` instance slot but instead to a set of `wgpu`
`IndirectParameters`, from which it allocates an instance slot
dynamically if frustum culling succeeds. Batch building has been updated
to allocate and track indirect parameter slots, and the AABBs are now
supplied to the GPU as `MeshCullingData`.
A small amount of code relating to the frustum culling has been borrowed
from meshlets and moved into `maths.wgsl`. Note that standard Bevy
frustum culling uses AABBs, while meshlets use bounding spheres; this
means that not as much code can be shared as one might think.
This patch doesn't provide any way to perform GPU culling on shadow
maps, to avoid making this patch bigger than it already is. That can be
a followup.
## Changelog
### Added
* Frustum culling can now optionally be done on the GPU. To enable it,
add the `GpuCulling` component to a camera.
* To disable CPU frustum culling, add `NoCpuCulling` to a camera. Note
that `GpuCulling` doesn't automatically imply `NoCpuCulling`.
# Objective
- There is an unfortunate lack of dragons in the meshlet docs.
- Dragons are symbolic of majesty, power, storms, and meshlets.
- A dragon habitat such as our docs requires cultivation to ensure each
winged lizard reaches their fullest, fiery selves.
## Solution
- Fix the link to the dragon image.
- The link originally targeted the `meshlet` branch, but that was later
deleted after it was merged into `main`.
---
## Changelog
- Added a dragon back into the `MeshletPlugin` documentation.
Keeping track of explicit visibility per cluster between frames does not
work with LODs, and leads to worse culling (using the final depth buffer
from the previous frame is more accurate).
Instead, we need to generate a second depth pyramid after the second
raster pass, and then use that in the first culling pass in the next
frame to test if a cluster would have been visible last frame or not.
As part of these changes, the write_index_buffer pass has been folded
into the culling pass for a large performance gain, and to avoid
tracking a lot of extra state that would be needed between passes.
Prepass previous model/view stuff was adapted to work with meshlets as
well.
Also fixed a bug with materials, and other misc improvements.
---------
Co-authored-by: François <mockersf@gmail.com>
Co-authored-by: atlas dostal <rodol@rivalrebels.com>
Co-authored-by: vero <email@atlasdostal.com>
Co-authored-by: Patrick Walton <pcwalton@mimiga.net>
Co-authored-by: Robert Swain <robert.swain@gmail.com>
# Objective
- Provide feedback when an extraction plugin fails to add its system.
I had some troubleshooting pain when this happened to me, as the panic
only tells you a resource is missing. This PR adds an error when the
ExtractResource plugin is added before the render world exists, instead
of silently failing.
