# Objective
- Calculating gradients in variable-termination loop is bad, and we dont
need to here
## Solution
- Sample mip 0 always
## Testing
- volumetric_fog example
# Objective
- prepare bevy_light for split
- make struct named better
- put it where it belongs
## Solution
- do those things
## Testing
- 3d_scene, lighting
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- prepare bevy_light for split
## Solution
- split render world extract related cluster code from main world ecs
stuff
re-exports make this not breaking
# Objective
- for smallvec some crates specify default features false, other dont.
turns out we dont need them
## Solution
- remove
## Testing
- 3d_scene
# Objective
- prepare bevy_light for split
## Solution
- extract cascade module (this is not strictly necessary for bevy_light)
- clean up imports to be less globby and tangled
- move light specific stuff into light modules
- move light system and type init from pbr into new LightPlugin
## Testing
- 3d_scene, lighting
NOTE TO REVIEWERS: it may help to review commits independently.
# Objective
- Make bevy_light possible by making it possible to split out
clusterable into bevy_camera
## Solution
- move ClusteredDecal to cluster module
- Depends on #19957 (because of the imports shuffling around) (draft
until thats merged)
## Testing
- 3d_scene runs
Note: no breaking changes thanks to re-exports
# Objective
- Make bevy_light possible
## Solution
- Move non-light stuff out of light module (its a marker for whether a
material should cast shadows: thats a material property not a light
property)
## Testing
- 3d_scene runs
# Objective
- Make bevy_light possible
## Solution
- Move some stuff it needs out of somewhere it cant depend on. Plus it
makes sense, cubemap stuff goes next to cubemap stuff.
## Testing
- 3d_scene runs
Note: no breaking changes thanks to re-exports
# Objective
- Make bevy_light possible by making it possible to split out
clusterable into bevy_camera
## Solution
- Move some stuff so i can split it out cleanly.
## Testing
- 3d_scene runs
# Objective
- Make bevy_light possible by making it possible to split out
clusterable into bevy_camera
## Solution
- Move cubemap stuff next to cubemap stuff.
## Testing
- 3d_scene runs
Note: no breaking changes thanks to re-exports
# Objective
- Make bevy_light possible
## Solution
- Move some stuff it needs out of somewhere it cant depend on. Plus it
makes sense, spotlight stuff goes in spotlight file.
## Testing
- 3d_scene runs
Note: no breaking changes thanks to re-exports
# Objective
- Make bevy_light possible by making it possible to split out
clusterable into bevy_camera
## Solution
- Use a resource to store cluster settings instead of recalculating it
every time from the render adapter/device
## Testing
- 3d_scene runs
# Objective
- define scenes without bevy_render
## Solution
- Move Camera2d/3d components out of bevy_core_pipeline
## Testing
- 3d_scene runs fine
Note: no breaking changes thanks to re-exports
# Objective
- Make bevy_light possible
## Solution
- Move some stuff it needs out of somewhere it cant depend on. Plus it
makes sense, visibility stuff goes in visibility.
## Testing
- 3d_scene runs
Note: no breaking changes thanks to re-exports
# Objective
- Progress towards #19887.
## Solution
- Convert `FromWorld` impls into systems that run in `RenderStartup`.
- Move `UiPipeline` init to `build_ui_render` instead of doing it
separately in `finish`.
Note: I am making several of these systems pub so that users could order
their systems relative to them. This is to match the fact that these
types previously were FromWorld so users could initialize them.
## Testing
- Ran `ui_material`, `ui_texture_slice`, `box_shadow`, and `gradients`
examples and it still worked.
# Objective
- get closer to being able to load gltfs without using bevy_render
## Solution
- Split bevy_camera out of bevy_render
- Builds on #19943
- Im sorry for the big diff, i tried to minimize it as much as i can by
using re-exports. This also prevents most breaking changes, but there
are still a couple.
## Testing
- 3d_scene looks good
# Objective
- The usage of ComponentId is quite confusing: events are not
components. By newtyping this, we can prevent stupid mistakes, avoid
leaking internal details and make the code clearer for users and engine
devs reading it.
- Adopts https://github.com/bevyengine/bevy/pull/19755
---------
Co-authored-by: oscar-benderstone <oscarbenderstone@gmail.com>
Co-authored-by: Oscar Bender-Stone <88625129+oscar-benderstone@users.noreply.github.com>
# Objective
- I accidentally left a `register_component_hooks` without actually
adding a hook and didnt notice
## Solution
- mark it must_use so it doesnt happen to other people (maybe this is
just skill issue on me though)
# Objective
- another step towards splitting out bevy_camera, this is needed by
visibility systems
## Solution
- move mesh stuff into mesh place
## Testing
- 3d_scene looks fine
No migration needed because of the re-export, that can be another PR
after i split bevy_camera
# Objective
Move Bevy UI's rendering into a dedicated crate.
Motivations:
* Allow the UI renderer to be used with other UI frameworks than
`bevy_ui`.
* Allow for using alternative renderers like Vello with `bevy_ui`.
* It's difficult for rendering contributors to make changes and
improvements to the UI renderer as it requires in-depth knowledge of the
UI implementation.
## Solution
Move the `render` and `ui_material` modules from `bevy_ui` into a new
crate `bevy_ui_render`.
## Testing
Important examples to check are `testbed_ui`, `testbed_full_ui`,
`ui_material`, `viewport_node` and `gradients`.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
The generated `GetTypeRegistration::get_type_registration` method has an
unnecessary `allow(unused_mut)` attribute. It used to be necessary
because it was possible for `registration` to not be modified, but now
there is always at least one modification.
## Solution
Remove the attribute.
## Testing
I checked the `cargo expand` output.
# Objective
```
2025-07-03T11:48:34.039501Z ERROR panic: thread 'IO Task Pool (6)' panicked at 'byte index 9 is not a char boundary; it is inside '个' (bytes 7..10) of `展示_个人收款码.png`': [...]\crates\bevy_asset\src\path.rs:475
```
## Solution
char_indices
Adds support for:
- `WGPU_ADAPTER_NAME` which will attempt to select a specific adapter
with a given name.
- `WGPU_FORCE_FALLBACK_ADAPTER` which will force fallback to a fallback
(software) renderer, if available.
The first has higher specificity than the second.
# Objective
Allow combinator and pipe systems to delay validation of the second
system, while still allowing the second system to be skipped.
Fixes#18796
Allow fallible systems to be used as one-shot systems, reporting errors
to the error handler when used through commands.
Fixes#19722
Allow fallible systems to be used as run conditions, including when used
with combinators. Alternative to #19580.
Always validate parameters when calling the safe
`run_without_applying_deferred`, `run`, and `run_readonly` methods on a
`System`.
## Solution
Have `System::run_unsafe` return a `Result`.
We want pipe systems to run the first system before validating the
second, since the first system may affect whether the second system has
valid parameters. But if the second system skips then we have no output
value to return! So, pipe systems must return a `Result` that indicates
whether the second system ran.
But if we just make pipe systems have `Out = Result<B::Out>`, then
chaining `a.pipe(b).pipe(c)` becomes difficult. `c` would need to accept
the `Result` from `a.pipe(b)`, which means it would likely need to
return `Result` itself, giving `Result<Result<Out>>`!
Instead, we make *all* systems return a `Result`! We move the handling
of fallible systems from `IntoScheduleConfigs` and `IntoObserverSystem`
to `SystemParamFunction` and `ExclusiveSystemParamFunction`, so that an
infallible system can be wrapped before being passed to a combinator.
As a side effect, this enables fallible systems to be used as run
conditions and one-shot systems.
Now that the safe `run_without_applying_deferred`, `run`, and
`run_readonly` methods return a `Result`, we can have them perform
parameter validation themselves instead of requiring each caller to
remember to call them. `run_unsafe` will continue to not validate
parameters, since it is used in the multi-threaded executor when we want
to validate and run in separate tasks.
Note that this makes type inference a little more brittle. A function
that returns `Result<T>` can be considered either a fallible system
returning `T` or an infallible system returning `Result<T>` (and this is
important to continue supporting `pipe`-based error handling)! So there
are some cases where the output type of a system can no longer be
inferred. It will work fine when directly adding to a schedule, since
then the output type is fixed to `()` (or `bool` for run conditions).
And it will work fine when `pipe`ing to a system with a typed input
parameter.
I used a dedicated `RunSystemError` for the error type instead of plain
`BevyError` so that skipping a system does not box an error or capture a
backtrace.
...which previously used a HashSet, whos iter has no ordering guarantee
fixes#19687
i also discovered that the asserted order in the unit test is reversed,
so i fixed that. I dont know if that reversed order is intentional
Edit: i referenced the wrong issue oops
