# Objective
Clarify the comment about the camera's coordinate system in
`examples/3d/generate_custom_mesh.rs` by explicitly stating which axes
point where.
Fixes#13018
## Solution
Copy the wording from #13012 into the example.
# Objective
Closes#13017.
## Solution
- Make `AppExit` a enum with a `Success` and `Error` variant.
- Make `App::run()` return a `AppExit` if it ever returns.
- Make app runners return a `AppExit` to signal if they encountered a
error.
---
## Changelog
### Added
- [`App::should_exit`](https://example.org/)
- [`AppExit`](https://docs.rs/bevy/latest/bevy/app/struct.AppExit.html)
to the `bevy` and `bevy_app` preludes,
### Changed
- [`AppExit`](https://docs.rs/bevy/latest/bevy/app/struct.AppExit.html)
is now a enum with 2 variants (`Success` and `Error`).
- The app's [runner
function](https://docs.rs/bevy/latest/bevy/app/struct.App.html#method.set_runner)
now has to return a `AppExit`.
-
[`App::run()`](https://docs.rs/bevy/latest/bevy/app/struct.App.html#method.run)
now also returns the `AppExit` produced by the runner function.
## Migration Guide
- Replace all usages of
[`AppExit`](https://docs.rs/bevy/latest/bevy/app/struct.AppExit.html)
with `AppExit::Success` or `AppExit::Failure`.
- Any custom app runners now need to return a `AppExit`. We suggest you
return a `AppExit::Error` if any `AppExit` raised was a Error. You can
use the new [`App::should_exit`](https://example.org/) method.
- If not exiting from `main` any other way. You should return the
`AppExit` from `App::run()` so the app correctly returns a error code if
anything fails e.g.
```rust
fn main() -> AppExit {
App::new()
//Your setup here...
.run()
}
```
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
Allow parallel iteration over events, resolve#10766
## Solution
- Add `EventParIter` which works similarly to `QueryParIter`,
implementing a `for_each{_with_id}` operator.
I chose to not mirror `EventIteratorWithId` and instead implement both
operations on a single struct.
- Reuse `BatchingStrategy` from `QueryParIter`
## Changelog
- `EventReader` now supports parallel event iteration using
`par_read().for_each(|event| ...)`.
---------
Co-authored-by: James Liu <contact@jamessliu.com>
Co-authored-by: Pablo Reinhardt <126117294+pablo-lua@users.noreply.github.com>
# Objective
- The docs says the WireframeColor is supposed to override the default
global color but it doesn't.
## Solution
- Use WireframeColor to override global color like docs said it was
supposed to do.
- Updated the example to document this feature
- I also took the opportunity to clean up the code a bit
Fixes#13032
# Objective
Fixes#12900
## Solution
Added comment to example indicating that additional audio formats are
supported when the feature is added.
---------
Co-authored-by: James Liu <contact@jamessliu.com>
# Objective
When learning about creating meshes in bevy using this example I
couldn't tell which coordinate system bevy uses, which caused confusion
and having to look it up else where.
## Solution
Add a comment that says what coordinate system bevy uses.
# Objective
- Fixes#12976
## Solution
This one is a doozy.
- Run `cargo +beta clippy --workspace --all-targets --all-features` and
fix all issues
- This includes:
- Moving inner attributes to be outer attributes, when the item in
question has both inner and outer attributes
- Use `ptr::from_ref` in more scenarios
- Extend the valid idents list used by `clippy:doc_markdown` with more
names
- Use `Clone::clone_from` when possible
- Remove redundant `ron` import
- Add backticks to **so many** identifiers and items
- I'm sorry whoever has to review this
---
## Changelog
- Added links to more identifiers in documentation.
[Alpha to coverage] (A2C) replaces alpha blending with a
hardware-specific multisample coverage mask when multisample
antialiasing is in use. It's a simple form of [order-independent
transparency] that relies on MSAA. ["Anti-aliased Alpha Test: The
Esoteric Alpha To Coverage"] is a good summary of the motivation for and
best practices relating to A2C.
This commit implements alpha to coverage support as a new variant for
`AlphaMode`. You can supply `AlphaMode::AlphaToCoverage` as the
`alpha_mode` field in `StandardMaterial` to use it. When in use, the
standard material shader automatically applies the texture filtering
method from ["Anti-aliased Alpha Test: The Esoteric Alpha To Coverage"].
Objects with alpha-to-coverage materials are binned in the opaque pass,
as they're fully order-independent.
The `transparency_3d` example has been updated to feature an object with
alpha to coverage. Happily, the example was already using MSAA.
This is part of #2223, as far as I can tell.
[Alpha to coverage]: https://en.wikipedia.org/wiki/Alpha_to_coverage
[order-independent transparency]:
https://en.wikipedia.org/wiki/Order-independent_transparency
["Anti-aliased Alpha Test: The Esoteric Alpha To Coverage"]:
https://bgolus.medium.com/anti-aliased-alpha-test-the-esoteric-alpha-to-coverage-8b177335ae4f
---
## Changelog
### Added
* The `AlphaMode` enum now supports `AlphaToCoverage`, to provide
limited order-independent transparency when multisample antialiasing is
in use.
# Objective
- Fix some doc warnings
- Add doc-scrape-examples to all examples
Moved from #12692
I run `cargo +nightly doc --workspace --all-features --no-deps
-Zunstable-options -Zrustdoc-scrape-examples`
<details>
```
warning: public documentation for `GzAssetLoaderError` links to private item `GzAssetLoader`
--> examples/asset/asset_decompression.rs:24:47
|
24 | /// Possible errors that can be produced by [`GzAssetLoader`]
| ^^^^^^^^^^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
= note: `#[warn(rustdoc::private_intra_doc_links)]` on by default
warning: `bevy` (example "asset_decompression") generated 1 warning
warning: unresolved link to `shape::Quad`
--> examples/2d/mesh2d.rs:3:15
|
3 | //! [`Quad`]: shape::Quad
| ^^^^^^^^^^^ no item named `shape` in scope
|
= note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
warning: `bevy` (example "mesh2d") generated 1 warning
warning: unresolved link to `WorldQuery`
--> examples/ecs/custom_query_param.rs:1:49
|
1 | //! This example illustrates the usage of the [`WorldQuery`] derive macro, which allows
| ^^^^^^^^^^ no item named `WorldQuery` in scope
|
= help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
= note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
warning: `bevy` (example "custom_query_param") generated 1 warning
warning: unresolved link to `shape::Quad`
--> examples/2d/mesh2d_vertex_color_texture.rs:4:15
|
4 | //! [`Quad`]: shape::Quad
| ^^^^^^^^^^^ no item named `shape` in scope
|
= note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
warning: `bevy` (example "mesh2d_vertex_color_texture") generated 1 warning
warning: public documentation for `TextPlugin` links to private item `CoolText`
--> examples/asset/processing/asset_processing.rs:48:9
|
48 | /// * [`CoolText`]: a custom RON text format that supports dependencies and embedded dependencies
| ^^^^^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
= note: `#[warn(rustdoc::private_intra_doc_links)]` on by default
warning: public documentation for `TextPlugin` links to private item `Text`
--> examples/asset/processing/asset_processing.rs:49:9
|
49 | /// * [`Text`]: a "normal" plain text file
| ^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
warning: public documentation for `TextPlugin` links to private item `CoolText`
--> examples/asset/processing/asset_processing.rs:51:57
|
51 | /// It also defines an asset processor that will load [`CoolText`], resolve embedded dependenc...
| ^^^^^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
warning: `bevy` (example "asset_processing") generated 3 warnings
warning: public documentation for `CustomAssetLoaderError` links to private item `CustomAssetLoader`
--> examples/asset/custom_asset.rs:20:47
|
20 | /// Possible errors that can be produced by [`CustomAssetLoader`]
| ^^^^^^^^^^^^^^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
= note: `#[warn(rustdoc::private_intra_doc_links)]` on by default
warning: public documentation for `BlobAssetLoaderError` links to private item `CustomAssetLoader`
--> examples/asset/custom_asset.rs:61:47
|
61 | /// Possible errors that can be produced by [`CustomAssetLoader`]
| ^^^^^^^^^^^^^^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
```
```
warning: `bevy` (example "mesh2d") generated 1 warning
warning: public documentation for `log_layers_ecs` links to private item `update_subscriber`
--> examples/app/log_layers_ecs.rs:6:18
|
6 | //! Inside the [`update_subscriber`] function we will create a [`mpsc::Sender`] and a [`mpsc::R...
| ^^^^^^^^^^^^^^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
= note: `#[warn(rustdoc::private_intra_doc_links)]` on by default
warning: unresolved link to `AdvancedLayer`
--> examples/app/log_layers_ecs.rs:7:72
|
7 | ... will go into the [`AdvancedLayer`] and the [`Receiver`](mpsc::Receiver) will
| ^^^^^^^^^^^^^ no item named `AdvancedLayer` in scope
|
= help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
= note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
warning: unresolved link to `LogEvents`
--> examples/app/log_layers_ecs.rs:8:42
|
8 | //! go into a non-send resource called [`LogEvents`] (It has to be non-send because [`Receiver`...
| ^^^^^^^^^ no item named `LogEvents` in scope
|
= help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
warning: public documentation for `log_layers_ecs` links to private item `transfer_log_events`
--> examples/app/log_layers_ecs.rs:9:30
|
9 | //! From there we will use [`transfer_log_events`] to transfer log events from [`LogEvents`] to...
| ^^^^^^^^^^^^^^^^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
warning: unresolved link to `LogEvents`
--> examples/app/log_layers_ecs.rs:9:82
|
9 | ...nsfer log events from [`LogEvents`] to an ECS event called [`LogEvent`].
| ^^^^^^^^^ no item named `LogEvents` in scope
|
= help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
warning: public documentation for `log_layers_ecs` links to private item `LogEvent`
--> examples/app/log_layers_ecs.rs:9:119
|
9 | ...nts`] to an ECS event called [`LogEvent`].
| ^^^^^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
warning: public documentation for `log_layers_ecs` links to private item `LogEvent`
--> examples/app/log_layers_ecs.rs:11:49
|
11 | //! Finally, after all that we can access the [`LogEvent`] event from our systems and use it.
| ^^^^^^^^ this item is private
|
= note: this link will resolve properly if you pass `--document-private-items`
```
<details/>
This commit splits `VisibleEntities::entities` into four separate lists:
one for lights, one for 2D meshes, one for 3D meshes, and one for UI
elements. This allows `queue_material_meshes` and similar methods to
avoid examining entities that are obviously irrelevant. In particular,
this separation helps scenes with many skinned meshes, as the individual
bones are considered visible entities but have no rendered appearance.
Internally, `VisibleEntities::entities` is a `HashMap` from the `TypeId`
representing a `QueryFilter` to the appropriate `Entity` list. I had to
do this because `VisibleEntities` is located within an upstream crate
from the crates that provide lights (`bevy_pbr`) and 2D meshes
(`bevy_sprite`). As an added benefit, this setup allows apps to provide
their own types of renderable components, by simply adding a specialized
`check_visibility` to the schedule.
This provides a 16.23% end-to-end speedup on `many_foxes` with 10,000
foxes (24.06 ms/frame to 20.70 ms/frame).
## Migration guide
* `check_visibility` and `VisibleEntities` now store the four types of
renderable entities--2D meshes, 3D meshes, lights, and UI
elements--separately. If your custom rendering code examines
`VisibleEntities`, it will now need to specify which type of entity it's
interested in using the `WithMesh2d`, `WithMesh`, `WithLight`, and
`WithNode` types respectively. If your app introduces a new type of
renderable entity, you'll need to add an explicit call to
`check_visibility` to the schedule to accommodate your new component or
components.
## Analysis
`many_foxes`, 10,000 foxes: `main`:
`many_foxes`, 10,000 foxes, this branch:
`queue_material_meshes` (yellow = this branch, red = `main`):
`queue_shadows` (yellow = this branch, red = `main`):
I ported the two existing PCF techniques to the cubemap domain as best I
could. Generally, the technique is to create a 2D orthonormal basis
using Gram-Schmidt normalization, then apply the technique over that
basis. The results look fine, though the shadow bias often needs
adjusting.
For comparison, Unity uses a 4-tap pattern for PCF on point lights of
(1, 1, 1), (-1, -1, 1), (-1, 1, -1), (1, -1, -1). I tried this but
didn't like the look, so I went with the design above, which ports the
2D techniques to the 3D domain. There's surprisingly little material on
point light PCF.
I've gone through every example using point lights and verified that the
shadow maps look fine, adjusting biases as necessary.
Fixes#3628.
---
## Changelog
### Added
* Shadows from point lights now support percentage-closer filtering
(PCF), and as a result look less aliased.
### Changed
* `ShadowFilteringMethod::Castano13` and
`ShadowFilteringMethod::Jimenez14` have been renamed to
`ShadowFilteringMethod::Gaussian` and `ShadowFilteringMethod::Temporal`
respectively.
## Migration Guide
* `ShadowFilteringMethod::Castano13` and
`ShadowFilteringMethod::Jimenez14` have been renamed to
`ShadowFilteringMethod::Gaussian` and `ShadowFilteringMethod::Temporal`
respectively.
Currently, `MeshUniform`s are rather large: 160 bytes. They're also
somewhat expensive to compute, because they involve taking the inverse
of a 3x4 matrix. Finally, if a mesh is present in multiple views, that
mesh will have a separate `MeshUniform` for each and every view, which
is wasteful.
This commit fixes these issues by introducing the concept of a *mesh
input uniform* and adding a *mesh uniform building* compute shader pass.
The `MeshInputUniform` is simply the minimum amount of data needed for
the GPU to compute the full `MeshUniform`. Most of this data is just the
transform and is therefore only 64 bytes. `MeshInputUniform`s are
computed during the *extraction* phase, much like skins are today, in
order to avoid needlessly copying transforms around on CPU. (In fact,
the render app has been changed to only store the translation of each
mesh; it no longer cares about any other part of the transform, which is
stored only on the GPU and the main world.) Before rendering, the
`build_mesh_uniforms` pass runs to expand the `MeshInputUniform`s to the
full `MeshUniform`.
The mesh uniform building pass does the following, all on GPU:
1. Copy the appropriate fields of the `MeshInputUniform` to the
`MeshUniform` slot. If a single mesh is present in multiple views, this
effectively duplicates it into each view.
2. Compute the inverse transpose of the model transform, used for
transforming normals.
3. If applicable, copy the mesh's transform from the previous frame for
TAA. To support this, we double-buffer the `MeshInputUniform`s over two
frames and swap the buffers each frame. The `MeshInputUniform`s for the
current frame contain the index of that mesh's `MeshInputUniform` for
the previous frame.
This commit produces wins in virtually every CPU part of the pipeline:
`extract_meshes`, `queue_material_meshes`,
`batch_and_prepare_render_phase`, and especially
`write_batched_instance_buffer` are all faster. Shrinking the amount of
CPU data that has to be shuffled around speeds up the entire rendering
process.
| Benchmark | This branch | `main` | Speedup |
|------------------------|-------------|---------|---------|
| `many_cubes -nfc` | 17.259 | 24.529 | 42.12% |
| `many_cubes -nfc -vpi` | 302.116 | 312.123 | 3.31% |
| `many_foxes` | 3.227 | 3.515 | 8.92% |
Because mesh uniform building requires compute shader, and WebGL 2 has
no compute shader, the existing CPU mesh uniform building code has been
left as-is. Many types now have both CPU mesh uniform building and GPU
mesh uniform building modes. Developers can opt into the old CPU mesh
uniform building by setting the `use_gpu_uniform_builder` option on
`PbrPlugin` to `false`.
Below are graphs of the CPU portions of `many-cubes
--no-frustum-culling`. Yellow is this branch, red is `main`.
`extract_meshes`:
It's notable that we get a small win even though we're now writing to a
GPU buffer.
`queue_material_meshes`:
There's a bit of a regression here; not sure what's causing it. In any
case it's very outweighed by the other gains.
`batch_and_prepare_render_phase`:
There's a huge win here, enough to make batching basically drop off the
profile.
`write_batched_instance_buffer`:
There's a massive improvement here, as expected. Note that a lot of it
simply comes from the fact that `MeshInputUniform` is `Pod`. (This isn't
a maintainability problem in my view because `MeshInputUniform` is so
simple: just 16 tightly-packed words.)
## Changelog
### Added
* Per-mesh instance data is now generated on GPU with a compute shader
instead of CPU, resulting in rendering performance improvements on
platforms where compute shaders are supported.
## Migration guide
* Custom render phases now need multiple systems beyond just
`batch_and_prepare_render_phase`. Code that was previously creating
custom render phases should now add a `BinnedRenderPhasePlugin` or
`SortedRenderPhasePlugin` as appropriate instead of directly adding
`batch_and_prepare_render_phase`.
# Objective
- Replace `RenderMaterials` / `RenderMaterials2d` / `RenderUiMaterials`
with `RenderAssets` to enable implementing changes to one thing,
`RenderAssets`, that applies to all use cases rather than duplicating
changes everywhere for multiple things that should be one thing.
- Adopts #8149
## Solution
- Make RenderAsset generic over the destination type rather than the
source type as in #8149
- Use `RenderAssets<PreparedMaterial<M>>` etc for render materials
---
## Changelog
- Changed:
- The `RenderAsset` trait is now implemented on the destination type.
Its `SourceAsset` associated type refers to the type of the source
asset.
- `RenderMaterials`, `RenderMaterials2d`, and `RenderUiMaterials` have
been replaced by `RenderAssets<PreparedMaterial<M>>` and similar.
## Migration Guide
- `RenderAsset` is now implemented for the destination type rather that
the source asset type. The source asset type is now the `RenderAsset`
trait's `SourceAsset` associated type.
Allows the user to select a scene to load, then a loading screen is
shown until all assets are loaded, and pipelines compiled.
# Objective
- Fixes#12654
## Solution
- Add desired assets to be monitored to a list.
- While there are assets that are not fully loaded, show a loading
screen.
- Once all assets are loaded, and pipelines compiled, show the scene
that was loaded.
# Objective
- Example `compute_shader_game_of_life` is random and not following the
rules of the game of life: at each steps, it randomly reads some pixel
of the current step and some of the previous step instead of only from
the previous step
- Fixes#9353
## Solution
- Adopted from #9678
- Added a switch of the texture displayed every frame otherwise the game
of life looks wrong
- Added a way to display the texture bigger so that I could manually
check everything was right
---------
Co-authored-by: Sludge <96552222+SludgePhD@users.noreply.github.com>
Co-authored-by: IceSentry <IceSentry@users.noreply.github.com>
# Objective
- Fixes#12411
- Add an example demonstrating the usage of asset meta files.
## Solution
- Add a new example displaying a basic scene of three pixelated images
- Apply a .meta file to one of the assets setting Nearest filtering
- Use AssetServer::load_with_settings on the last one as another way to
achieve the same effect
- The result is one blurry image and two crisp images demonstrating a
common scenario in which changing settings are useful.
# Objective
- It's pretty common for users to want to read data back from the gpu
and into the main world
## Solution
- Add a simple example that shows how to read data back from the gpu and
send it to the main world using a channel.
- The example is largely based on this wgpu example but adapted to bevy
-
fb305b85f6/examples/src/repeated_compute/mod.rs
---------
Co-authored-by: stormy <120167078+stowmyy@users.noreply.github.com>
Co-authored-by: Torstein Grindvik <52322338+torsteingrindvik@users.noreply.github.com>
# Objective
- There is a little mistake in a line comment.
## Solution
- Fixed the comment to correctly describe what happens in the documented
calculation.
# Objective
Fix#11931
## Solution
- Make stepping a non-default feature
- Adjust documentation and examples
- In particular, make the breakout example not show the stepping prompt
if compiled without the feature (shows a log message instead)
---
## Changelog
- Removed `bevy_debug_stepping` from default features
## Migration Guide
The system-by-system stepping feature is now disabled by default; to use
it, enable the `bevy_debug_stepping` feature explicitly:
```toml
[dependencies]
bevy = { version = "0.14", features = ["bevy_debug_stepping"] }
```
Code using
[`Stepping`](https://docs.rs/bevy/latest/bevy/ecs/schedule/struct.Stepping.html)
will still compile with the feature disabled, but will print a runtime
error message to the console if the application attempts to enable
stepping.
---------
Co-authored-by: James Liu <contact@jamessliu.com>
Co-authored-by: François Mockers <francois.mockers@vleue.com>
# Objective
- As @james7132 said [on
Discord](https://discord.com/channels/691052431525675048/692572690833473578/1224626740773523536),
the `close_on_esc` system is forcing `bevy_window` to depend on
`bevy_input`.
- `close_on_esc` is not likely to be used in production, so it arguably
does not have a place in `bevy_window`.
## Solution
- As suggested by @afonsolage, move `close_on_esc` into
`bevy_dev_tools`.
- Add an example to the documentation too.
- Remove `bevy_window`'s dependency on `bevy_input`.
- Add `bevy_reflect`'s `smol_str` feature to `bevy_window` because it
was implicitly depended upon with `bevy_input` before it was removed.
- Remove any usage of `close_on_esc` from the examples.
- `bevy_dev_tools` is not enabled by default. I personally find it
frustrating to run examples with additional features, so I opted to
remove it entirely.
- This is up for discussion if you have an alternate solution.
---
## Changelog
- Moved `bevy_window::close_on_esc` to `bevy_dev_tools::close_on_esc`.
- Removed usage of `bevy_dev_tools::close_on_esc` from all examples.
## Migration Guide
`bevy_window::close_on_esc` has been moved to
`bevy_dev_tools::close_on_esc`. You will first need to enable
`bevy_dev_tools` as a feature in your `Cargo.toml`:
```toml
[dependencies]
bevy = { version = "0.14", features = ["bevy_dev_tools"] }
```
Finally, modify any imports to use `bevy_dev_tools` instead:
```rust
// Old:
// use bevy:🪟:close_on_esc;
// New:
use bevy::dev_tools::close_on_esc;
App::new()
.add_systems(Update, close_on_esc)
// ...
.run();
```
# Objective
- Enable stressing of more of the material mesh entity draw code paths
## Solution
- Support generation of a number of different mesh assets from the
built-in primitives, and select randomly from them. This breaks batches
based on different meshes.
- Support disabling automatic batching. This skips the batching cost at
the expense of stressing render pass draw command encoding.
- Support enabling directional light cascaded shadow mapping - this is
commonly a big source of slow down in normal scenes.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: François Mockers <francois.mockers@vleue.com>
This commit makes the following optimizations:
## `MeshPipelineKey`/`BaseMeshPipelineKey` split
`MeshPipelineKey` has been split into `BaseMeshPipelineKey`, which lives
in `bevy_render` and `MeshPipelineKey`, which lives in `bevy_pbr`.
Conceptually, `BaseMeshPipelineKey` is a superclass of
`MeshPipelineKey`. For `BaseMeshPipelineKey`, the bits start at the
highest (most significant) bit and grow downward toward the lowest bit;
for `MeshPipelineKey`, the bits start at the lowest bit and grow upward
toward the highest bit. This prevents them from colliding.
The goal of this is to avoid having to reassemble bits of the pipeline
key for every mesh every frame. Instead, we can just use a bitwise or
operation to combine the pieces that make up a `MeshPipelineKey`.
## `specialize_slow`
Previously, all of `specialize()` was marked as `#[inline]`. This
bloated `queue_material_meshes` unnecessarily, as a large chunk of it
ended up being a slow path that was rarely hit. This commit refactors
the function to move the slow path to `specialize_slow()`.
Together, these two changes shave about 5% off `queue_material_meshes`:
## Migration Guide
- The `primitive_topology` field on `GpuMesh` is now an accessor method:
`GpuMesh::primitive_topology()`.
- For performance reasons, `MeshPipelineKey` has been split into
`BaseMeshPipelineKey`, which lives in `bevy_render`, and
`MeshPipelineKey`, which lives in `bevy_pbr`. These two should be
combined with bitwise-or to produce the final `MeshPipelineKey`.
# Objective
- There are several redundant imports in the tests and examples that are
not caught by CI because additional flags need to be passed.
## Solution
- Run `cargo check --workspace --tests` and `cargo check --workspace
--examples`, then fix all warnings.
- Add `test-check` to CI, which will be run in the check-compiles job.
This should catch future warnings for tests. Examples are already
checked, but I'm not yet sure why they weren't caught.
## Discussion
- Should the `--tests` and `--examples` flags be added to CI, so this is
caught in the future?
- If so, #12818 will need to be merged first. It was also a warning
raised by checking the examples, but I chose to split off into a
separate PR.
---------
Co-authored-by: François Mockers <francois.mockers@vleue.com>
# Objective
- Since #12453, `DeterministicRenderingConfig` doesn't do anything
## Solution
- Remove it
---
## Migration Guide
- Removed `DeterministicRenderingConfig`. There shouldn't be any z
fighting anymore in the rendering even without setting
`stable_sort_z_fighting`
# Objective
- The `ImePreedit` component from
[`text_input`](50699ecf76/examples/input/text_input.rs (L126-L127))
appears to be unused.
- This was found by running `cargo check --workspace --examples`,
originally as part of #12817.
## Solution
- Remove it :)
# Objective
This is a necessary precursor to #9122 (this was split from that PR to
reduce the amount of code to review all at once).
Moving `!Send` resource ownership to `App` will make it unambiguously
`!Send`. `SubApp` must be `Send`, so it can't wrap `App`.
## Solution
Refactor `App` and `SubApp` to not have a recursive relationship. Since
`SubApp` no longer wraps `App`, once `!Send` resources are moved out of
`World` and into `App`, `SubApp` will become unambiguously `Send`.
There could be less code duplication between `App` and `SubApp`, but
that would break `App` method chaining.
## Changelog
- `SubApp` no longer wraps `App`.
- `App` fields are no longer publicly accessible.
- `App` can no longer be converted into a `SubApp`.
- Various methods now return references to a `SubApp` instead of an
`App`.
## Migration Guide
- To construct a sub-app, use `SubApp::new()`. `App` can no longer
convert into `SubApp`.
- If you implemented a trait for `App`, you may want to implement it for
`SubApp` as well.
- If you're accessing `app.world` directly, you now have to use
`app.world()` and `app.world_mut()`.
- `App::sub_app` now returns `&SubApp`.
- `App::sub_app_mut` now returns `&mut SubApp`.
- `App::get_sub_app` now returns `Option<&SubApp>.`
- `App::get_sub_app_mut` now returns `Option<&mut SubApp>.`
# Objective
- `examples/shader/post_processing.rs` is a shader example that works
for 3d
- I recently tried to update this example to get it to work on 2d but
failed to do so
- Then I created a discord help thread to help me figure this out.
[here's the link to the
thread](https://discordapp.com/channels/691052431525675048/1221819669116354723).
## Solution
- The solution is to replace all instances of 3d structures with their
respective 2d counterparts
## Changelog
- Added a small comment that explains how to get the example to work on
2d
#### Please do suggest changes if any
---------
Co-authored-by: IceSentry <IceSentry@users.noreply.github.com>
Today, we sort all entities added to all phases, even the phases that
don't strictly need sorting, such as the opaque and shadow phases. This
results in a performance loss because our `PhaseItem`s are rather large
in memory, so sorting is slow. Additionally, determining the boundaries
of batches is an O(n) process.
This commit makes Bevy instead applicable place phase items into *bins*
keyed by *bin keys*, which have the invariant that everything in the
same bin is potentially batchable. This makes determining batch
boundaries O(1), because everything in the same bin can be batched.
Instead of sorting each entity, we now sort only the bin keys. This
drops the sorting time to near-zero on workloads with few bins like
`many_cubes --no-frustum-culling`. Memory usage is improved too, with
batch boundaries and dynamic indices now implicit instead of explicit.
The improved memory usage results in a significant win even on
unbatchable workloads like `many_cubes --no-frustum-culling
--vary-material-data-per-instance`, presumably due to cache effects.
Not all phases can be binned; some, such as transparent and transmissive
phases, must still be sorted. To handle this, this commit splits
`PhaseItem` into `BinnedPhaseItem` and `SortedPhaseItem`. Most of the
logic that today deals with `PhaseItem`s has been moved to
`SortedPhaseItem`. `BinnedPhaseItem` has the new logic.
Frame time results (in ms/frame) are as follows:
| Benchmark | `binning` | `main` | Speedup |
| ------------------------ | --------- | ------- | ------- |
| `many_cubes -nfc -vpi` | 232.179 | 312.123 | 34.43% |
| `many_cubes -nfc` | 25.874 | 30.117 | 16.40% |
| `many_foxes` | 3.276 | 3.515 | 7.30% |
(`-nfc` is short for `--no-frustum-culling`; `-vpi` is short for
`--vary-per-instance`.)
---
## Changelog
### Changed
* Render phases have been split into binned and sorted phases. Binned
phases, such as the common opaque phase, achieve improved CPU
performance by avoiding the sorting step.
## Migration Guide
- `PhaseItem` has been split into `BinnedPhaseItem` and
`SortedPhaseItem`. If your code has custom `PhaseItem`s, you will need
to migrate them to one of these two types. `SortedPhaseItem` requires
the fewest code changes, but you may want to pick `BinnedPhaseItem` if
your phase doesn't require sorting, as that enables higher performance.
## Tracy graphs
`many-cubes --no-frustum-culling`, `main` branch:
<img width="1064" alt="Screenshot 2024-03-12 180037"
src="https://github.com/bevyengine/bevy/assets/157897/e1180ce8-8e89-46d2-85e3-f59f72109a55">
`many-cubes --no-frustum-culling`, this branch:
<img width="1064" alt="Screenshot 2024-03-12 180011"
src="https://github.com/bevyengine/bevy/assets/157897/0899f036-6075-44c5-a972-44d95895f46c">
You can see that `batch_and_prepare_binned_render_phase` is a much
smaller fraction of the time. Zooming in on that function, with yellow
being this branch and red being `main`, we see:
<img width="1064" alt="Screenshot 2024-03-12 175832"
src="https://github.com/bevyengine/bevy/assets/157897/0dfc8d3f-49f4-496e-8825-a66e64d356d0">
The binning happens in `queue_material_meshes`. Again with yellow being
this branch and red being `main`:
<img width="1064" alt="Screenshot 2024-03-12 175755"
src="https://github.com/bevyengine/bevy/assets/157897/b9b20dc1-11c8-400c-a6cc-1c2e09c1bb96">
We can see that there is a small regression in `queue_material_meshes`
performance, but it's not nearly enough to outweigh the large gains in
`batch_and_prepare_binned_render_phase`.
---------
Co-authored-by: James Liu <contact@jamessliu.com>
Created soundtrack example, fade-in and fade-out features, added new
assets, and updated credits.
# Objective
- Fixes#12651
## Solution
- Created a resource to hold the track list.
- The audio assets are then loaded by the asset server and added to the
track list.
- Once the game is in a specific state, an `AudioBundle` is spawned and
plays the appropriate track.
- The audio volume starts at zero and is then incremented gradually
until it reaches full volume.
- Once the game state changes, the current track fades out, and a new
one fades in at the same time, offering a relatively seamless
transition.
- Once a track is completely faded out, it is despawned from the app.
- Game state changes are simulated through a `Timer` for simplicity.
- Track change system is only run if there is a change in the
`GameState` resource.
- All tracks are used according to their respective licenses.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
Wireframes are currently supported for 3D meshes using the
`WireframePlugin` in `bevy_pbr`. This PR adds the same functionality for
2D meshes.
Closes#5881.
## Solution
Since there's no easy way to share material implementations between 2D,
3D, and UI, this is mostly a straight copy and rename from the original
plugin into `bevy_sprite`.
<img width="1392" alt="image"
src="https://github.com/bevyengine/bevy/assets/3961616/7aca156f-448a-4c7e-89b8-0a72c5919769">
---
## Changelog
- Added `Wireframe2dPlugin` and related types to support 2D wireframes.
- Added an example to demonstrate how to use 2D wireframes
---------
Co-authored-by: IceSentry <IceSentry@users.noreply.github.com>
# Objective
- Example `mesh2d_manual` crashes in wasm/webgl2, as reported in
https://github.com/bevyengine/bevy-website/issues/1123#issuecomment-2019479670
```
wgpu error: Validation Error
Caused by:
In a RenderPass
note: encoder = `<CommandBuffer-(0, 1, Gl)>`
In a set_push_constant command
Provided push constant is for stage(s) ShaderStages(VERTEX), however the pipeline layout has no push constant range for the stage(s) ShaderStages(VERTEX)
```
## Solution
- Properly declare the push constant as in
4508077297/crates/bevy_sprite/src/mesh2d/mesh.rs (L514-L524)
# Objective
Previously, the `Point` trait, which abstracts all of the operations of
a real vector space, was sitting in the submodule of `bevy_math` for
cubic splines. However, the trait has broader applications than merely
cubic splines, and we should use it when possible to avoid code
duplication when performing vector operations.
## Solution
`Point` has been moved into a new submodule in `bevy_math` named
`common_traits`. Furthermore, it has been renamed to `VectorSpace`,
which is more descriptive, and an additional trait `NormedVectorSpace`
has been introduced to expand the API to cover situations involving
geometry in addition to algebra. Additionally, `VectorSpace` itself now
requires a `ZERO` constant and `Neg`. It also supports a `lerp` function
as an automatic trait method.
Here is what that looks like:
```rust
/// A type that supports the mathematical operations of a real vector space, irrespective of dimension.
/// In particular, this means that the implementing type supports:
/// - Scalar multiplication and division on the right by elements of `f32`
/// - Negation
/// - Addition and subtraction
/// - Zero
///
/// Within the limitations of floating point arithmetic, all the following are required to hold:
/// - (Associativity of addition) For all `u, v, w: Self`, `(u + v) + w == u + (v + w)`.
/// - (Commutativity of addition) For all `u, v: Self`, `u + v == v + u`.
/// - (Additive identity) For all `v: Self`, `v + Self::ZERO == v`.
/// - (Additive inverse) For all `v: Self`, `v - v == v + (-v) == Self::ZERO`.
/// - (Compatibility of multiplication) For all `a, b: f32`, `v: Self`, `v * (a * b) == (v * a) * b`.
/// - (Multiplicative identity) For all `v: Self`, `v * 1.0 == v`.
/// - (Distributivity for vector addition) For all `a: f32`, `u, v: Self`, `(u + v) * a == u * a + v * a`.
/// - (Distributivity for scalar addition) For all `a, b: f32`, `v: Self`, `v * (a + b) == v * a + v * b`.
///
/// Note that, because implementing types use floating point arithmetic, they are not required to actually
/// implement `PartialEq` or `Eq`.
pub trait VectorSpace:
Mul<f32, Output = Self>
+ Div<f32, Output = Self>
+ Add<Self, Output = Self>
+ Sub<Self, Output = Self>
+ Neg
+ Default
+ Debug
+ Clone
+ Copy
{
/// The zero vector, which is the identity of addition for the vector space type.
const ZERO: Self;
/// Perform vector space linear interpolation between this element and another, based
/// on the parameter `t`. When `t` is `0`, `self` is recovered. When `t` is `1`, `rhs`
/// is recovered.
///
/// Note that the value of `t` is not clamped by this function, so interpolating outside
/// of the interval `[0,1]` is allowed.
#[inline]
fn lerp(&self, rhs: Self, t: f32) -> Self {
*self * (1. - t) + rhs * t
}
}
```
```rust
/// A type that supports the operations of a normed vector space; i.e. a norm operation in addition
/// to those of [`VectorSpace`]. Specifically, the implementor must guarantee that the following
/// relationships hold, within the limitations of floating point arithmetic:
/// - (Nonnegativity) For all `v: Self`, `v.norm() >= 0.0`.
/// - (Positive definiteness) For all `v: Self`, `v.norm() == 0.0` implies `v == Self::ZERO`.
/// - (Absolute homogeneity) For all `c: f32`, `v: Self`, `(v * c).norm() == v.norm() * c.abs()`.
/// - (Triangle inequality) For all `v, w: Self`, `(v + w).norm() <= v.norm() + w.norm()`.
///
/// Note that, because implementing types use floating point arithmetic, they are not required to actually
/// implement `PartialEq` or `Eq`.
pub trait NormedVectorSpace: VectorSpace {
/// The size of this element. The return value should always be nonnegative.
fn norm(self) -> f32;
/// The squared norm of this element. Computing this is often faster than computing
/// [`NormedVectorSpace::norm`].
#[inline]
fn norm_squared(self) -> f32 {
self.norm() * self.norm()
}
/// The distance between this element and another, as determined by the norm.
#[inline]
fn distance(self, rhs: Self) -> f32 {
(rhs - self).norm()
}
/// The squared distance between this element and another, as determined by the norm. Note that
/// this is often faster to compute in practice than [`NormedVectorSpace::distance`].
#[inline]
fn distance_squared(self, rhs: Self) -> f32 {
(rhs - self).norm_squared()
}
}
```
Furthermore, this PR also demonstrates the use of the
`NormedVectorSpace` combined API to implement `ShapeSample` for
`Triangle2d` and `Triangle3d` simultaneously. Such deduplication is one
of the drivers for developing these APIs.
---
## Changelog
- `Point` from `cubic_splines` becomes `VectorSpace`, exported as
`bevy::math::VectorSpace`.
- `VectorSpace` requires `Neg` and `VectorSpace::ZERO` in addition to
its existing prerequisites.
- Introduced public traits `bevy::math::NormedVectorSpace` for generic
geometry tasks involving vectors.
- Implemented `ShapeSample` for `Triangle2d` and `Triangle3d`.
## Migration Guide
Since `Point` no longer exists, any projects using it must switch to
`bevy::math::VectorSpace`. Additionally, third-party implementations of
this trait now require the `Neg` trait; the constant `VectorSpace::ZERO`
must be provided as well.
---
## Discussion
### Design considerations
Originally, the `NormedVectorSpace::norm` method was part of a separate
trait `Normed`. However, I think that was probably too broad and, more
importantly, the semantics of having it in `NormedVectorSpace` are much
clearer.
As it currently stands, the API exposed here is pretty minimal, and
there is definitely a lot more that we could do, but there are more
questions to answer along the way. As a silly example, we could
implement `NormedVectorSpace::length` as an alias for
`NormedVectorSpace::norm`, but this overlaps with methods in all of the
glam types, so we would want to make sure that the implementations are
effectively identical (for what it's worth, I think they are already).
### Future directions
One example of something that could belong in the `NormedVectorSpace`
API is normalization. Actually, such a thing previously existed on this
branch before I decided to shelve it because of concerns with namespace
collision. It looked like this:
```rust
/// This element, but normalized to norm 1 if possible. Returns an error when the reciprocal of
/// the element's norm is not finite.
#[inline]
#[must_use]
fn normalize(&self) -> Result<Self, NonNormalizableError> {
let reciprocal = 1.0 / self.norm();
if reciprocal.is_finite() {
Ok(*self * reciprocal)
} else {
Err(NonNormalizableError { reciprocal })
}
}
/// An error indicating that an element of a [`NormedVectorSpace`] was non-normalizable due to having
/// non-finite norm-reciprocal.
#[derive(Debug, Error)]
#[error("Element with norm reciprocal {reciprocal} cannot be normalized")]
pub struct NonNormalizableError {
reciprocal: f32
}
```
With this kind of thing in hand, it might be worth considering
eventually making the passage from vectors to directions fully generic
by employing a wrapper type. (Of course, for our concrete types, we
would leave the existing names in place as aliases.) That is, something
like:
```rust
pub struct NormOne<T>
where T: NormedVectorSpace { //... }
```
Utterly separately, the reason that I implemented `ShapeSample` for
`Triangle2d`/`Triangle3d` was to prototype uniform sampling of abstract
meshes, so that's also a future direction.
---------
Co-authored-by: Zachary Harrold <zac@harrold.com.au>
Adopted from and closes https://github.com/bevyengine/bevy/pull/9914 by
@djeedai
# Objective
Fix the use of `TypeRegistry` instead of `TypeRegistryArc` in dynamic
scene and its serializer.
Rename `DynamicScene::serialize_ron()` into `serialize()` to highlight
the fact this is not about serializing to RON specifically, but rather
about serializing to the official Bevy scene format (`.scn` /
`.scn.ron`) which the `SceneLoader` can deserialize (and which happens
to be based in RON, but that not the object here). Also make the link
with the documentation of `SceneLoader` so users understand the full
serializing cycle of a Bevy dynamic scene.
Document `SceneSerializer` with an example showing how to serialize to a
custom format (here: RON), which is easily transposed to serializing
into any other format.
Fixes#9520
## Changelog
### Changed
* `SceneSerializer` and all related serializing helper types now take a
`&TypeRegistry` instead of a `&TypeRegistryArc`. ([SceneSerializer
needlessly uses specifically
&TypeRegistryArc #9520](https://github.com/bevyengine/bevy/issues/9520))
* `DynamicScene::serialize_ron()` was renamed to `serialize()`.
## Migration Guide
* `SceneSerializer` and all related serializing helper types now take a
`&TypeRegistry` instead of a `&TypeRegistryArc`. You can upgrade by
getting the former from the latter with `TypeRegistryArc::read()`,
_e.g._
```diff
let registry_arc: TypeRegistryArc = [...];
- let serializer = SceneSerializer(&scene, ®istry_arc);
+ let registry = registry_arc.read();
+ let serializer = SceneSerializer(&scene, ®istry);
```
* Rename `DynamicScene::serialize_ron()` to `serialize()`.
---------
Co-authored-by: Jerome Humbert <djeedai@gmail.com>
Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com>
Co-authored-by: Gino Valente <49806985+MrGVSV@users.noreply.github.com>
Co-authored-by: James Liu <contact@jamessliu.com>
# Objective
- Fixes#12712
## Solution
- Move the `float_ord.rs` file to `bevy_math`
- Change any `bevy_utils::FloatOrd` statements to `bevy_math::FloatOrd`
---
## Changelog
- Moved `FloatOrd` from `bevy_utils` to `bevy_math`
## Migration Guide
- References to `bevy_utils::FloatOrd` should be changed to
`bevy_math::FloatOrd`
# Objective
Resolves#3824. `unsafe` code should be the exception, not the norm in
Rust. It's obviously needed for various use cases as it's interfacing
with platforms and essentially running the borrow checker at runtime in
the ECS, but the touted benefits of Bevy is that we are able to heavily
leverage Rust's safety, and we should be holding ourselves accountable
to that by minimizing our unsafe footprint.
## Solution
Deny `unsafe_code` workspace wide. Add explicit exceptions for the
following crates, and forbid it in almost all of the others.
* bevy_ecs - Obvious given how much unsafe is needed to achieve
performant results
* bevy_ptr - Works with raw pointers, even more low level than bevy_ecs.
* bevy_render - due to needing to integrate with wgpu
* bevy_window - due to needing to integrate with raw_window_handle
* bevy_utils - Several unsafe utilities used by bevy_ecs. Ideally moved
into bevy_ecs instead of made publicly usable.
* bevy_reflect - Required for the unsafe type casting it's doing.
* bevy_transform - for the parallel transform propagation
* bevy_gizmos - For the SystemParam impls it has.
* bevy_assets - To support reflection. Might not be required, not 100%
sure yet.
* bevy_mikktspace - due to being a conversion from a C library. Pending
safe rewrite.
* bevy_dynamic_plugin - Inherently unsafe due to the dynamic loading
nature.
Several uses of unsafe were rewritten, as they did not need to be using
them:
* bevy_text - a case of `Option::unchecked` could be rewritten as a
normal for loop and match instead of an iterator.
* bevy_color - the Pod/Zeroable implementations were replaceable with
bytemuck's derive macros.
# Objective
We have `ReflectSerializer` and `TypedReflectSerializer`. The former is
the one users will most often use since the latter takes a bit more
effort to deserialize.
However, our deserializers are named `UntypedReflectDeserializer` and
`TypedReflectDeserializer`. There is no obvious indication that
`UntypedReflectDeserializer` must be used with `ReflectSerializer` since
the names don't quite match up.
## Solution
Rename `UntypedReflectDeserializer` back to `ReflectDeserializer`
(initially changed as part of #5723).
Also update the docs for both deserializers (as they were pretty out of
date) and include doc examples.
I also updated the docs for the serializers, too, just so that
everything is consistent.
---
## Changelog
- Renamed `UntypedReflectDeserializer` to `ReflectDeserializer`
- Updated docs for `ReflectDeserializer`, `TypedReflectDeserializer`,
`ReflectSerializer`, and `TypedReflectSerializer`
## Migration Guide
`UntypedReflectDeserializer` has been renamed to `ReflectDeserializer`.
Usages will need to be updated accordingly.
```diff
- let reflect_deserializer = UntypedReflectDeserializer::new(®istry);
+ let reflect_deserializer = ReflectDeserializer::new(®istry);
```
# Objective
- Be more explicit in the name of the module for the ui debug overlay
- Avoid confusion and possible overlap with new overlays
## Solution
- Rename `debug_overlay` to `ui_debug_overlay`
# Objective
- Adds line styles to bevy gizmos, suggestion of #9400
- Currently solid and dotted lines are implemented but this can easily
be extended to support dashed lines as well if that is wanted.
## Solution
- Adds the enum `GizmoLineStyle` and uses it in each `GizmoConfig` to
configure the style of the line.
- Each "dot" in a dotted line has the same width and height as the
`line_width` of the corresponding line.
---
## Changelog
- Added `GizmoLineStyle` to `bevy_gizmos`
- Added a `line_style: GizmoLineStyle ` attribute to `GizmoConfig`
- Updated the `lines.wgsl` shader and the pipelines accordingly.
## Migration Guide
- Any manually created `GizmoConfig` must now include the `line_style`
attribute
## Additional information
Some pretty pictures :)
This is the 3d_gizmos example with/without `line_perspective`:
<img width="1440" alt="Screenshot 2024-03-09 at 23 25 53"
src="https://github.com/bevyengine/bevy/assets/62256001/b1b97311-e78d-4de3-8dfe-9e48a35bb27d">
<img width="1440" alt="Screenshot 2024-03-09 at 23 25 39"
src="https://github.com/bevyengine/bevy/assets/62256001/50ee8ecb-5290-484d-ba36-7fd028374f7f">
And the 2d example:
<img width="1440" alt="Screenshot 2024-03-09 at 23 25 06"
src="https://github.com/bevyengine/bevy/assets/62256001/4452168f-d605-4333-bfa5-5461d268b132">
---------
Co-authored-by: BD103 <59022059+BD103@users.noreply.github.com>
Fixes#12600
## Solution
Removed Into<AssetId<T>> for Handle<T> as proposed in Issue
conversation, fixed dependent code
## Migration guide
If you use passing Handle by value as AssetId, you should pass reference
or call .id() method on it
Before (0.13):
`assets.insert(handle, value);`
After (0.14):
`assets.insert(&handle, value);`
or
`assets.insert(handle.id(), value);`
# Objective
Fixes issue #12613 - the RNG used in examples is _deterministic_, but
its implementation is not _portable_ across platforms. We want to switch
to using a portable RNG that does not vary across platforms, to ensure
certain examples play out the same way every time.
## Solution
Replace all occurences of `rand::rngs::StdRng` with
`rand_chacha::ChaCha8Rng`, as recommended in issue #12613
---
## Changelog
- Add `rand_chacha` as a new dependency (controversial?)
- Replace all occurences of `rand::rngs::StdRng` with
`rand_chacha::ChaCha8Rng`
# Objective
- Implements maths and `Animatable` for `Srgba` as suggested
[here](https://github.com/bevyengine/bevy/issues/12617#issuecomment-2013494774).
## Solution
- Implements `Animatable` and maths for `Srgba` just like their
implemented for other colors.
---
## Changelog
- Updated the example to mention `Srgba`.
## Migration Guide
- The previously existing implementation of mul/div for `Srgba` did not
modify `alpha` but these operations do modify `alpha` now. Users need to
be aware of this change.
