# Objective
Allow users to specify the power preference when selecting a wgpu
adapter, which is useful for testing or workaround purposes, and makes
the behaviour consistent with the already present check for
`WGPU_BACKEND`.
## Solution
In `WgpuSettings::default()`, allow users to specify the
`WGPU_POWER_PREF` to affect the wgpu adapter choice.
# Objective
fix#9452
when multiple assets are queued to a preregistered loader, only one gets
unblocked when the real loader is registered.
## Solution
i thought async_channel receivers worked like broadcast channels, but in
fact the notification is only received by a single receiver, so only a
single waiting asset is unblocked. close the sender instead so that all
blocked receivers are unblocked.
If a line has one point behind the camera(near plane) then it would
deform or, if the `depth_bias` setting was set to a negative value,
disappear.
## Solution
The issue is that performing a perspective divide does not work
correctly for points behind the near plane and a perspective divide is
used inside the shader to define the line width in screen space.
The solution is to perform near plane clipping manually inside the
shader before the perspective divide is done.
# Objective
Fixes#9455
This change has probably been forgotten in
https://github.com/bevyengine/bevy/pull/8306.
## Solution
Remove the inversion of the Y axis when propagates window change back to
winit.
# Objective
Inconvenient initialization of `UiScale`
## Solution
Change `UiScale` to a tuple struct
## Migration Guide
Replace initialization of `UiScale` like ```UiScale { scale: 1.0 }```
with ```UiScale(1.0)```
# Objective
- Fixes part of #9021
## Solution
- Joint mesh are in format `Unorm8x4` in some gltf file, but Bevy
expects a `Float32x4`. Converts them. Also converts `Unorm16x4`
- According to gltf spec:
https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html#skinned-mesh-attributes
> WEIGHTS_n: float, or normalized unsigned byte, or normalized unsigned
short
# Objective
Fix#9089
## Solution
Don't try to draw lines with less than 2 vertices. These would not be
visible either way.
---------
Co-authored-by: François <mockersf@gmail.com>
# Objective
- Currently, (AFAIC, accidentally) after registering an event for a
Gilrs button event, we ignore all subsequent events for the same button
in the same frame, because we don't update our filter. This is rare, but
I noticed it while adding gamepad support to a terminal app rendering at
15fps.
- Related to #4664, but does not quite fix it.
## Solution
- Move the edit to the `Axis<GamepadButton>` resource to when we read
the events from Gilrs.
# Objective
Closes#9115, replaces #9117.
## Solution
Emit event when scene is ready.
---
## Changelog
### Added
- `SceneInstanceReady` event when scene becomes ready.
# Objective
- Fixes https://github.com/bevyengine/bevy/issues/9250
## Changelog
- Move scene spawner systems to a new SpawnScene schedule which is after
Update and before PostUpdate (schedule order:
[PreUpdate][Update][SpawnScene][PostUpdate])
## Migration Guide
- Move scene spawner systems to a new SpawnScene schedule which is after
Update and before PostUpdate (schedule order:
[PreUpdate][Update][SpawnScene][PostUpdate]), you might remove system
ordering code related to scene spawning as the execution order has been
guaranteed by bevy engine.
---------
Co-authored-by: Hennadii Chernyshchyk <genaloner@gmail.com>
Updates the requirements on
[tracy-client](https://github.com/nagisa/rust_tracy_client) to permit
the latest version.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="f38da93ff1"><code>f38da93</code></a>
Test with 1.63.0 for MSRV</li>
<li><a
href="3621e20ccd"><code>3621e20</code></a>
tracing-client-sys: 0.21.1</li>
<li><a
href="bccf04b152"><code>bccf04b</code></a>
tracing-tracy: 0.10.3</li>
<li><a
href="bff27b5218"><code>bff27b5</code></a>
tracy-client: 0.15.2 -> 0.16.0 + fix auto update</li>
<li><a
href="9ed943bd6b"><code>9ed943b</code></a>
Add safe GPU API</li>
<li><a
href="60443cc55c"><code>60443cc</code></a>
Benches fell out of sync</li>
<li><a
href="c346a10998"><code>c346a10</code></a>
Fix version table typo</li>
<li><a
href="0763d2d16c"><code>0763d2d</code></a>
Bump MSRV to 1.60.0</li>
<li><a
href="d483998d48"><code>d483998</code></a>
Update Tracy client bindings to v0.9.1</li>
<li><a
href="dce363444f"><code>dce3634</code></a>
client-sys: 0.20.0, client: 0.15.1, tracing: 0.10.2</li>
<li>Additional commits viewable in <a
href="https://github.com/nagisa/rust_tracy_client/compare/tracy-client-v0.15.0...tracy-client-v0.16.0">compare
view</a></li>
</ul>
</details>
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# Objective
- Significantly reduce the size of MeshUniform by only including
necessary data.
## Solution
Local to world, model transforms are affine. This means they only need a
4x3 matrix to represent them.
`MeshUniform` stores the current, and previous model transforms, and the
inverse transpose of the current model transform, all as 4x4 matrices.
Instead we can store the current, and previous model transforms as 4x3
matrices, and we only need the upper-left 3x3 part of the inverse
transpose of the current model transform. This change allows us to
reduce the serialized MeshUniform size from 208 bytes to 144 bytes,
which is over a 30% saving in data to serialize, and VRAM bandwidth and
space.
## Benchmarks
On an M1 Max, running `many_cubes -- sphere`, main is in yellow, this PR
is in red:
<img width="1484" alt="Screenshot 2023-08-11 at 02 36 43"
src="https://github.com/bevyengine/bevy/assets/302146/7d99c7b3-f2bb-4004-a8d0-4c00f755cb0d">
A reduction in frame time of ~14%.
---
## Changelog
- Changed: Redefined `MeshUniform` to improve performance by using 4x3
affine transforms and reconstructing 4x4 matrices in the shader. Helper
functions were added to `bevy_pbr::mesh_functions` to unpack the data.
`affine_to_square` converts the packed 4x3 in 3x4 matrix data to a 4x4
matrix. `mat2x4_f32_to_mat3x3` converts the 3x3 in mat2x4 + f32 matrix
data back into a 3x3.
## Migration Guide
Shader code before:
```
var model = mesh[instance_index].model;
```
Shader code after:
```
#import bevy_pbr::mesh_functions affine_to_square
var model = affine_to_square(mesh[instance_index].model);
```
# Objective
- When loading gltf files during app creation (for example using a
FromWorld impl and adding that as a resource), no loader was found.
- As the gltf loader can load compressed formats, it needs to know what
the GPU supports so it's not available at app creation time.
## Solution
alternative to #9426
- add functionality to preregister the loader. loading assets with
matching extensions will block until a real loader is registered.
- preregister "gltf" and "glb".
- prereigster image formats.
the way this is set up, if a set of extensions are all registered with a
single preregistration call, then later a loader is added that matches
some of the extensions, assets using the remaining extensions will then
fail. i think that should work well for image formats that we don't know
are supported until later.
Addresses:
```sh
$ cargo build --release --example lighting --target wasm32-unknown-unknown --features webgl
error: none of the selected packages contains these features: webgl, did you mean: webgl2, webp?
```
# Objective
- When following the instructions for the web examples.
- Document clearly the generated file `./target/wasm_example.js`, since
it didn't appear on `git grep` (missing extension)
## Solution
- Follow the feature rename on the docs.
---------
Signed-off-by: Seb Ospina <kraige@gmail.com>
While being nobody other's issue as far I can tell, I want to create a
trait I plan to implement on `App` where more than one schedule is
modified.
My workaround so far was working with a closure that returns an
`ExecutorKind` from a match of the method variable.
It makes it easier for me to being able to clone `ExecutorKind` and I
don't see this being controversial for others working with Bevy.
I did nothing more than adding `Clone` to the derived traits, no
migration guide needed.
(If this worked out then the GitHub editor is not too shabby.)
# Objective
Bevy prefers `mod.rs` inside `module_name` files over `module_name.rs`
collocated with `module_name`. In `bevy_render`, it seems the `window`
modules didn't follow this convention
## Solution
- Follow the `mod.rs` convention.
# Objective
- Fixes#9324
- Audio sinks used to have a custom drop implementation to detach the
sinks because it was not required to keep a reference to it
- With the new audio api, a reference is kept as a component of an
entity
## Solution
- Remove that custom drop implementation, and the option wrapping that
was required for it.
# Objective
In the `game_menu` example:
```rust
let button_icon_style = Style {
width: Val::Px(30.0),
// This takes the icons out of the flexbox flow, to be positioned exactly
position_type: PositionType::Absolute,
// The icon will be close to the left border of the button
left: Val::Px(10.0),
right: Val::Auto,
..default()
};
```
The default value for `right` is `Val::Auto` so that line is unnecessary
and can be removed.
# Objective
Just like
[`set_if_neq`](https://docs.rs/bevy_ecs/latest/bevy_ecs/change_detection/trait.DetectChangesMut.html#method.set_if_neq),
being able to express the "I don't want to unnecessarily trigger the
change detection" but with the ability to handle the previous value if
change occurs.
## Solution
Add `replace_if_neq` to `DetectChangesMut`.
---
## Changelog
- Added `DetectChangesMut::replace_if_neq`: like `set_if_neq` change the
value only if the new value if different from the current one, but
return the previous value if the change occurs.
# Objective
I found it very difficult to understand how bevy tasks work, and I
concluded that the documentation should be improved for beginners like
me.
## Solution
These changes to the documentation were written from my beginner's
perspective after
some extremely helpful explanations by nil on Discord.
I am not familiar enough with rustdoc yet; when looking at the source, I
found the documentation at the very top of `usages.rs` helpful, but I
don't know where they are rendered. They should probably be linked to
from the main `bevy_tasks` README.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Mike <mike.hsu@gmail.com>
# Objective
In `bevy_sprite`, the `Anchor` type is not `Copy`. It makes interacting
with it more difficult than necessary.
## Solution
Derive `Copy` on it. The rust API guidelines are that you should derive
`Copy` when possible.
<https://rust-lang.github.io/api-guidelines/interoperability.html#types-eagerly-implement-common-traits-c-common-traits>
Regardless, `Anchor` is a very small `enum` which warrants `Copy`.
---
## Changelog
- In `bevy_sprite` `Anchor` is now `Copy`.
---------
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
Need this for a custom `AnimationPlayer` that I tick in `FixedUpdate`
# Objective
- Need access to an animation clip's `paths` from outside the module
## Solution
- Add a getter method to return a reference to `paths`
---------
Co-authored-by: Tristan Guichaoua <33934311+tguichaoua@users.noreply.github.com>
Add a `RunSystem` extension trait to allow for immediate execution of
systems on a `World` for debugging and/or testing purposes.
# Objective
Fixes#6184
Initially, I made this CL as `ApplyCommands`. After a discussion with
@cart , we decided a more generic implementation would be better to
support all systems. This is the new revised CL. Sorry for the long
delay! 😅
This CL allows users to do this:
```rust
use bevy::prelude::*;
use bevy::ecs::system::RunSystem;
struct T(usize);
impl Resource for T {}
fn system(In(n): In<usize>, mut commands: Commands) -> usize {
commands.insert_resource(T(n));
n + 1
}
let mut world = World::default();
let n = world.run_system_with(1, system);
assert_eq!(n, 2);
assert_eq!(world.resource::<T>().0, 1);
```
## Solution
This is implemented as a trait extension and not included in any
preludes to ensure it's being used consciously.
Internally, it just initializes and runs a systems, and applies any
deferred parameters all "in place".
The trait has 2 functions (one of which calls the other by default):
- `run_system_with` is the general implementation, which allows user to
pass system input parameters
- `run_system` is the ergonomic wrapper for systems with no input
parameter (to avoid having the user pass `()` as input).
~~Additionally, this trait is also implemented for `&mut App`. I added
this mainly for ergonomics (`app.run_system` vs.
`app.world.run_system`).~~ (Removed based on feedback)
---------
Co-authored-by: Pascal Hertleif <killercup@gmail.com>
# Objective
Add possibility to use the glam's swizzles traits without having to
manually import them.
```diff
use bevy::prelude::*;
- use bevy::math::Vec3Swizzles;
fn foo(x: Vec3) {
let y: Vec2 = x.xy();
}
```
## Solution
Add the swizzles traits to bevy's prelude.
---
## Changelog
- `Vec2Swizzles`, `Vec3Swizzles` and `Vec4Swizzles` are now part of the
prelude.
# Objective
- I want to run the post_processing example in a new project, but I
can't because it uses bevy internal imports.
## Solution
- Change the bevy_internal imports to their respective bevy crates
imports
# Objective
Fixes#9094
## Solution
Takes a bit from
[this](https://github.com/bevyengine/bevy/issues/9094#issuecomment-1629333851)
comment as well as a
[comment](https://discord.com/channels/691052431525675048/1002362493634629796/1128024873260810271)
from @soqb.
This allows users to opt-out of the `TypePath` implementation that is
automatically generated by the `Reflect` derive macro, allowing custom
`TypePath` implementations.
```rust
#[derive(Reflect)]
#[reflect(type_path = false)]
struct Foo<T> {
#[reflect(ignore)]
_marker: PhantomData<T>,
}
struct NotTypePath;
impl<T: 'static> TypePath for Foo<T> {
fn type_path() -> &'static str {
std::any::type_name::<Self>()
}
fn short_type_path() -> &'static str {
static CELL: GenericTypePathCell = GenericTypePathCell::new();
CELL.get_or_insert::<Self, _>(|| {
bevy_utils::get_short_name(std::any::type_name::<Self>())
})
}
fn crate_name() -> Option<&'static str> {
Some("my_crate")
}
fn module_path() -> Option<&'static str> {
Some("my_crate::foo")
}
fn type_ident() -> Option<&'static str> {
Some("Foo")
}
}
// Can use `TypePath`
let _ = <Foo<NotTypePath> as TypePath>::type_path();
// Can register the type
let mut registry = TypeRegistry::default();
registry.register::<Foo<NotTypePath>>();
```
#### Type Path Stability
The stability of type paths mainly come into play during serialization.
If a type is moved between builds, an unstable type path may become
invalid.
Users that opt-out of `TypePath` and rely on something like
`std::any::type_name` as in the example above, should be aware that this
solution removes the stability guarantees. Deserialization thus expects
that type to never move. If it does, then the serialized type paths will
need to be updated accordingly.
If a user depends on stability, they will need to implement that
stability logic manually (probably by looking at the expanded output of
a typical `Reflect`/`TypePath` derive). This could be difficult for type
parameters that don't/can't implement `TypePath`, and will need to make
heavy use of string parsing and manipulation to achieve the same effect
(alternatively, they can choose to simply exclude any type parameter
that doesn't implement `TypePath`).
---
## Changelog
- Added the `#[reflect(type_path = false)]` attribute to opt out of the
`TypePath` impl when deriving `Reflect`
---------
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
# Objective
Update a camera's frustum only when needed.
- Maybe a performance gain from not having to compute frusta when not
needed, at the cost of change detection (?)
- Making "fighting" with `update_frusta` less tedious, see
https://github.com/bevyengine/bevy/issues/9077 and
https://discord.com/channels/691052431525675048/743663924229963868/1127566087966433322
## Solution
Add change detection filter for `GlobalTransform` or `T:
CameraProjection` in `update_frusta`, since those are the cases when the
frustum needs to be updated.
## Note
I don't think a migration guide and changelog are needed, but I'm not
100% sure, I could put something like "if you're fighting against
`update_frusta`, you can do it only when there is a change to
`GlobalTransform` or `CameraProjection` now", what do you think? It's
not really a breaking change with a normal use case.
# Objective
In the shader prepass example, changing to the motion vector output
hides the text, because both it and the background are rendererd black.
Seems to have been caused by this commit?
71cf35ce42
## Solution
Make the text white on all outputs.
naga and wgpu should polyfill WGSL instance_index functionality where it
is not available in GLSL. Until that is done, we can work around it in
bevy using a push constant which is converted to a uniform by naga and
wgpu.
# Objective
- Fixes#9375
## Solution
- Use a push constant to pass in the base instance to the shader on
WebGL2 so that base instance + gl_InstanceID is used to correctly
represent the instance index.
## TODO
- [ ] Benchmark vs per-object dynamic offset MeshUniform as this will
now push a uniform value per-draw as well as update the dynamic offset
per-batch.
- [x] Test on DX12 AMD/NVIDIA to check that this PR does not regress any
problems that were observed there. (@Elabajaba @robtfm were testing that
last time - help appreciated. <3 )
---
## Changelog
- Added: `bevy_render::instance_index` shader import which includes a
workaround for the lack of a WGSL `instance_index` polyfill for WebGL2
in naga and wgpu for the time being. It uses a push_constant which gets
converted to a plain uniform by naga and wgpu.
## Migration Guide
Shader code before:
```
struct Vertex {
@builtin(instance_index) instance_index: u32,
...
}
@vertex
fn vertex(vertex_no_morph: Vertex) -> VertexOutput {
...
var model = mesh[vertex_no_morph.instance_index].model;
```
After:
```
#import bevy_render::instance_index
struct Vertex {
@builtin(instance_index) instance_index: u32,
...
}
@vertex
fn vertex(vertex_no_morph: Vertex) -> VertexOutput {
...
var model = mesh[bevy_render::instance_index::get_instance_index(vertex_no_morph.instance_index)].model;
```
# Objective
Provide a slightly better message when a contributor needs to update the
generated example readme file for [any number of
reasons](https://github.com/bevyengine/bevy/pull/9372#discussion_r1285876202)
but hasn't added any examples.
This recently happened here:
https://github.com/bevyengine/bevy/pull/9370#issuecomment-1666776092
The contributor modified the readme template and is being told that they
added an example.
## Solution
The advice given is still correct. Just change the message so that it's
not accusing the contributor of adding an example.
It may be possible to instead add more specific messages instead if
someone is motivated to do that.
edit: reworked this whole PR text
---------
Co-authored-by: Nicola Papale <nicopap@users.noreply.github.com>
# Objective
The default for `ContentSize` should have the `measure_func` field set
to `None`, instead of a fixed size of zero. This means that until a
measure func is set the size of the UI node will be determined by its
`Style` constraints. This is preferable as it allows users to specify
the space the Node should take up in the layout while waiting for
content to load.
## Solution
Derive `Default` for `ContentSize`.
The PR also adds a `fixed_size` helper function to make it a bit easier
to access the old behaviour.
## Changelog
* Derived `Default` for `ContentSize`
* Added a `fixed_size` helper function to `ContentSize` that creates a
new `ContentSize` with a `MeasureFunc` that always returns the same
value, regardless of layout constraints.
## Migration Guide
The default for `ContentSize` now sets its `measure_func` to `None`,
instead of a fixed size measure that returns `Vec2::ZERO`.
The helper function `fixed_size` can be called with
`ContentSize::fixed_size(Vec2::ZERO)` to get the previous behaviour.
# Objective
It seems the behavior of field attributes was accidentally broken at
some point. Take the following code:
```rust
#[derive(Reflect)]
struct Foo {
#[reflect(ignore, default)]
value: usize
}
```
The above code should simply mark `value` as ignored and specify a
default behavior. However, what this actually does is discard both.
That's especially a problem when we don't want the field to be be given
a `Reflect` or `FromReflect` bound (which is why we ignore it in the
first place).
This only happens when the attributes are combined into one. The
following code works properly:
```rust
#[derive(Reflect)]
struct Foo {
#[reflect(ignore)]
#[reflect(default)]
value: usize
}
```
## Solution
Cleaned up the field attribute parsing logic to support combined field
attributes.
---
## Changelog
- Fixed a bug where `Reflect` derive attributes on fields are not able
to be combined into a single attribute
# Objective
- I forgot to update the example after the `ViewNodeRunner` was merged.
It was even partially mentioned in one of the comments.
## Solution
- Use the `ViewNodeRunner` in the post_processing example
- I also broke up a few lines that were a bit long
---------
Co-authored-by: JMS55 <47158642+JMS55@users.noreply.github.com>
# Objective
- Follow up to #8887
- The parsing code in `bevy_reflect/src/path/mod.rs` could also do with
some cleanup
## Solution
- Create the `parse.rs` module, move all parsing code to this module
- The parsing errors also now keep track of the whole parsed string, and
are much more fine-grained
### Detailed changes
- Move `PathParser` to `parse.rs` submodule
- Rename `token_to_access` to `access_following` (yep, goes from 132
lines to 16)
- Move parsing tests into the `parse.rs` file
# Objective
The doc comment for `text_system` is not quite correct. It implies that
a new `TextLayoutInfo` is generated on changes to `Text` and `Style`.
While changes to those components might indirectly trigger a
regeneration of the text layout, `text_system` itself only queries for
changes to `Node`
Also added details to `measure_text_system`'s doc comments explaining
how it reacts to changes.
---------
Co-authored-by: François <mockersf@gmail.com>
# Objective
- `bevy_tasks` emits warnings under certain conditions
When I run `cargo clippy -p bevy_tasks` the warning doesn't show up,
while if I run it with `cargo clippy -p bevy_asset` the warning shows
up.
## Solution
- Fix the warnings.
## Longer term solution
We should probably fix CI so that those warnings do not slip through.
But that's not the goal of this PR.
# Objective
The `post_processing` example is currently broken when run with webgl2.
```
cargo run --example post_processing --target=wasm32-unknown-unknown
```
```
wasm.js:387 panicked at 'wgpu error: Validation Error
Caused by:
In Device::create_render_pipeline
note: label = `post_process_pipeline`
In the provided shader, the type given for group 0 binding 2 has a size of 4. As the device does not support `DownlevelFlags::BUFFER_BINDINGS_NOT_16_BYTE_ALIGNED`, the type must have a size that is a multiple of 16 bytes.
```
I bisected the breakage to c7eaedd6a1.
## Solution
Add padding when using webgl2
# Objective
This doc comment for the `set` method of `ContentSize`:
```
Set a `Measure` for this function
```
doesn't seem to make sense, `ContentSize` is not a function.
# Solution
Replace it.
# Objective
When an `AudioSink` is removed from an entity, the audio player will
automatically start any `AudioSource` still attached, which normally is
the one used to start playback in the first place.
## Solution
Long story short, the default behavior is restarting the audio, and this
commit documents that.
---
## Changelog
Fixed documentation on `AudioSink` to clarify removal behavior.
# Objective
- Some examples crash in CI because of needing too many resources for
the windows runner
- Some examples have random results making it hard to compare
screenshots
## Solution
- `bloom_3d`: reduce the number of spheres
- `pbr`: use simpler spheres and reuse the mesh
- `tonemapping`: use simpler spheres and reuse the mesh
- `shadow_biases`: reduce the number of spheres
- `spotlight`: use a seeded rng, move more cubes in view while reducing
the total number of cubes, and reuse meshes and materials
- `external_source_external_thread`, `iter_combinations`,
`parallel_query`: use a seeded rng
Examples of errors encountered:
```
Caused by:
In Device::create_bind_group
note: label = `bloom_upsampling_bind_group`
Not enough memory left
```
```
Caused by:
In Queue::write_buffer
Parent device is lost
```
```
ERROR wgpu_core::device::life: Mapping failed Device(Lost)
```
# Objective
shader defs associated with a shader via `load_internal_asset!` or
`Shader::from_xxx_with_defs` were being accidentally ignored for
top-level shaders.
## Solution
include the defs for top level shaders.
