mirror of
https://github.com/bevyengine/bevy
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50 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Carter Anderson
|
0a8e2a3c9d
|
Skip empty spans when updating text buffers (#16524)
# Objective Fixes #16521 ## Solution If an empty span is encountered (such as the default `Text` value), we skip it entirely when updating buffers. This prevents unnecessarily bailing when the font doesn't exist (ex: when the default font is disabled) |
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Benjamin Brienen
|
40640fdf42
|
Don't reëxport bevy_image from bevy_render (#16163)
# Objective Fixes #15940 ## Solution Remove the `pub use` and fix the compile errors. Make `bevy_image` available as `bevy::image`. ## Testing Feature Frenzy would be good here! Maybe I'll learn how to use it if I have some time this weekend, or maybe a reviewer can use it. ## Migration Guide Use `bevy_image` instead of `bevy_render::texture` items. --------- Co-authored-by: chompaa <antony.m.3012@gmail.com> Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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|
Carter Anderson
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7577895d0c
|
Use CosmicFontSystem in public bevy_text APIs and remove cosmic_text re-export (#16063)
# Objective Fixes #16006 ## Solution We currently re-export `cosmic_text`, which is seemingly motivated by the desire to use `cosmic_text::FontSystem` in `bevy_text` public APIs instead of our `CosmicFontSystem` resource wrapper type. This change makes `bevy_text` a "true" abstraction over `cosmic_text` (it in fact, was already built to be that way generally and has this one "leak"). This allows us to remove the `cosmic_text` re-export, which helps clean up the Rust Analyzer imports and generally makes this a "cleaner" API. |
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ickshonpe
|
6f7d0e5725
|
split up TextStyle (#15857)
# Objective
Currently text is recomputed unnecessarily on any changes to its color,
which is extremely expensive.
## Solution
Split up `TextStyle` into two separate components `TextFont` and
`TextColor`.
## Testing
I added this system to `many_buttons`:
```rust
fn set_text_colors_changed(mut colors: Query<&mut TextColor>) {
for mut text_color in colors.iter_mut() {
text_color.set_changed();
}
}
```
reports ~4fps on main, ~50fps with this PR.
## Migration Guide
`TextStyle` has been renamed to `TextFont` and its `color` field has
been moved to a separate component named `TextColor` which newtypes
`Color`.
|
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UkoeHB
|
a6be9b4ccd
|
Rename TextBlock to TextLayout (#15797)
# Objective - Improve clarity when spawning a text block. See [this discussion](https://github.com/bevyengine/bevy/pull/15591/#discussion_r1787083571). ## Solution - Rename `TextBlock` to `TextLayout`. |
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|
UkoeHB
|
c2c19e5ae4
|
Text rework (#15591)
**Ready for review. Examples migration progress: 100%.** # Objective - Implement https://github.com/bevyengine/bevy/discussions/15014 ## Solution This implements [cart's proposal](https://github.com/bevyengine/bevy/discussions/15014#discussioncomment-10574459) faithfully except for one change. I separated `TextSpan` from `TextSpan2d` because `TextSpan` needs to require the `GhostNode` component, which is a `bevy_ui` component only usable by UI. Extra changes: - Added `EntityCommands::commands_mut` that returns a mutable reference. This is a blocker for extension methods that return something other than `self`. Note that `sickle_ui`'s `UiBuilder::commands` returns a mutable reference for this reason. ## Testing - [x] Text examples all work. --- ## Showcase TODO: showcase-worthy ## Migration Guide TODO: very breaking ### Accessing text spans by index Text sections are now text sections on different entities in a hierarchy, Use the new `TextReader` and `TextWriter` system parameters to access spans by index. Before: ```rust fn refresh_text(mut query: Query<&mut Text, With<TimeText>>, time: Res<Time>) { let text = query.single_mut(); text.sections[1].value = format_time(time.elapsed()); } ``` After: ```rust fn refresh_text( query: Query<Entity, With<TimeText>>, mut writer: UiTextWriter, time: Res<Time> ) { let entity = query.single(); *writer.text(entity, 1) = format_time(time.elapsed()); } ``` ### Iterating text spans Text spans are now entities in a hierarchy, so the new `UiTextReader` and `UiTextWriter` system parameters provide ways to iterate that hierarchy. The `UiTextReader::iter` method will give you a normal iterator over spans, and `UiTextWriter::for_each` lets you visit each of the spans. --------- Co-authored-by: ickshonpe <david.curthoys@googlemail.com> Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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|
UkoeHB
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0b5a360585
|
Fix text measurement when multiple font sizes are present (#15669)
# Objective - Fixes https://github.com/bevyengine/bevy/issues/15659 ## Solution - Add up line heights to get text block height instead of using `Metrics`, which only records the largest line height. ## Testing - [x] Fixed issue shown in https://github.com/bevyengine/bevy/pull/15622 |
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UkoeHB
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3df281ba7b
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Refactor TextPipeline::update_buffer to accept an interator (#15581)
# Objective - Prepare `TextPipeline` to work with multi-entity text blocks. See https://github.com/bevyengine/bevy/discussions/15014 ## Solution - Refactor `TextPipeline::update_buffer` to accept an iterator instead of slice. Adjust `update_buffer` implementation to only iterate spans once instead of three times (which would require iterating a hierarchy three times with multi-entity blocks). ## Testing - Tested with `text_debug` example. |
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UkoeHB
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ead84e0e3d
|
Rename BreakLineOn to LineBreak (#15583)
# Objective - Improve code quality in preparation for https://github.com/bevyengine/bevy/discussions/15014 ## Solution - Rename BreakLineOn to LineBreak. ## Migration Guide `BreakLineOn` was renamed to `LineBreak`, and paramters named `linebreak_behavior` were renamed to `linebreak`. |
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charlotte
|
df23b937cc
|
Make CosmicFontSystem and SwashCache pub resources. (#15479)
# Objective In nannou, we'd like to be able to access the [outline commands](https://docs.rs/cosmic-text/latest/cosmic_text/struct.SwashCache.html#method.get_outline_commands) from swash, while still benefit from Bevy's management of font assets. ## Solution Make `CosmicFontSystem` and `SwashCache` pub resources. ## Testing Ran some examples. |
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Zachary Harrold
|
d70595b667
|
Add core and alloc over std Lints (#15281)
# Objective - Fixes #6370 - Closes #6581 ## Solution - Added the following lints to the workspace: - `std_instead_of_core` - `std_instead_of_alloc` - `alloc_instead_of_core` - Used `cargo +nightly fmt` with [item level use formatting](https://rust-lang.github.io/rustfmt/?version=v1.6.0&search=#Item%5C%3A) to split all `use` statements into single items. - Used `cargo clippy --workspace --all-targets --all-features --fix --allow-dirty` to _attempt_ to resolve the new linting issues, and intervened where the lint was unable to resolve the issue automatically (usually due to needing an `extern crate alloc;` statement in a crate root). - Manually removed certain uses of `std` where negative feature gating prevented `--all-features` from finding the offending uses. - Used `cargo +nightly fmt` with [crate level use formatting](https://rust-lang.github.io/rustfmt/?version=v1.6.0&search=#Crate%5C%3A) to re-merge all `use` statements matching Bevy's previous styling. - Manually fixed cases where the `fmt` tool could not re-merge `use` statements due to conditional compilation attributes. ## Testing - Ran CI locally ## Migration Guide The MSRV is now 1.81. Please update to this version or higher. ## Notes - This is a _massive_ change to try and push through, which is why I've outlined the semi-automatic steps I used to create this PR, in case this fails and someone else tries again in the future. - Making this change has no impact on user code, but does mean Bevy contributors will be warned to use `core` and `alloc` instead of `std` where possible. - This lint is a critical first step towards investigating `no_std` options for Bevy. --------- Co-authored-by: François Mockers <francois.mockers@vleue.com> |
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UkoeHB
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21da0b72ae
|
Zero fontsize panic workaround (#15371)
# Objective - Fix https://github.com/bevyengine/bevy/issues/15366. `cosmic-text` buffers refuse to function if the `Metrics` font size is zero. ## Solution - Trick `cosmic-text` into clearing its internal buffer when the largest font size of segments is zero by sending it no spans and a tiny `Metrics::font_size` and `Metrics::line_height`. ## Testing - [x] Fixes @brandon-reinhart 's bug. |
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Marco Buono
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8e3db957c5
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Add the ability to control font smoothing (#15368)
# Objective - Fixes #10720 - Adds the ability to control font smoothing of rendered text ## Solution - Introduce the `FontSmoothing` enum, with two possible variants (`FontSmoothing::None` and `FontSmoothing::AntiAliased`): - This is based on `-webkit-font-smoothing`, in line with our practice of adopting CSS-like properties/names for UI; - I could have gone instead for the [`font-smooth` property](https://developer.mozilla.org/en-US/docs/Web/CSS/font-smooth) that's also supported by browsers, but didn't since it's also non-standard, has an uglier name, and doesn't allow controlling the type of antialias applied. - Having an enum instead of e.g. a boolean, leaves the path open for adding `FontSmoothing::SubpixelAntiAliased` in the future, without a breaking change; - Add all the necessary plumbing to get the `FontSmoothing` information to where we rasterize the glyphs and store them in the atlas; - Change the font atlas key to also take into account the smoothing setting, not only font and font size; - Since COSMIC Text [doesn't support controlling font smoothing](https://github.com/pop-os/cosmic-text/issues/279), we roll out our own threshold-based “implementation”: - This has the downside of **looking ugly for “regular” vector fonts** ⚠️, since it doesn't properly take the hinting information into account like a proper implementation on the rasterizer side would. - However, **for fonts that have been specifically authored to be pixel fonts, (a common use case in games!) this is not as big of a problem**, since all lines are vertical/horizontal, and close to the final pixel boundaries (as long as the font is used at a multiple of the size originally intended by the author) - Once COSMIC exposes this functionality, we can switch to using it directly, and get better results; - Use a nearest neighbor sampler for atlases with font smoothing disabled, so that you can scale the text via transform and still get the pixelated look; - Add a convenience method to `Text` for setting the font smoothing; - Add a demonstration of using the `FontSmoothing` property to the `text2d` example. ## Testing - Did you test these changes? If so, how? - Yes. Via the `text2d`example, and also in my game. - Are there any parts that need more testing? - I'd like help from someone for testing this on devices/OSs with fractional scaling (Android/Windows) - How can other people (reviewers) test your changes? Is there anything specific they need to know? - Both via the `text2d` example and also by using it directly on your projects. - If relevant, what platforms did you test these changes on, and are there any important ones you can't test? - macOS --- ## Showcase ```rust commands.spawn(Text2dBundle { text: Text::from_section("Hello, World!", default()) .with_font_smoothing(FontSmoothing::None), ..default() }); ```  <img width="740" alt="image" src="https://github.com/user-attachments/assets/b881b02c-4e43-410b-902f-6985c25140fc"> ## Migration Guide - `Text` now contains a `font_smoothing: FontSmoothing` property, make sure to include it or add `..default()` when using the struct directly; - `FontSizeKey` has been renamed to `FontAtlasKey`, and now also contains the `FontSmoothing` setting; - The following methods now take an extra `font_smoothing: FontSmoothing` argument: - `FontAtlas::new()` - `FontAtlasSet::add_glyph_to_atlas()` - `FontAtlasSet::get_glyph_atlas_info()` - `FontAtlasSet::get_outlined_glyph_texture()` |
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Blazepaws
|
1c2e1fc15a
|
Reflect derived traits on all components and resources: bevy_text (#15229)
Solves https://github.com/bevyengine/bevy/issues/15187 for bevy_text |
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UkoeHB
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fa51e26052
|
Trim cosmic-text's shape run cache (#15037)
# Objective - Fixes https://github.com/bevyengine/bevy/pull/14991. The `cosmic-text` shape run cache requires manual cleanup for old text that no longer needs to be cached. ## Solution - Add a system to trim the cache. - Add an `average fps` indicator to the `text_debug` example. ## Testing Tested with `cargo run --example text_debug`. - **No shape run cache**: 82fps with ~1fps variance. - **Shape run cache no trim**: 90-100fps with ~2-4fps variance - **Shape run cache trim age = 1**: 90-100fps with ~2-8fps variance - **Shape run cache trim age = 2**: 90-100fps with ~2-4fps variance - **Shape run cache trim age = 2000**: 80-120fps with ~2-6fps variance The shape run cache seems to increase average FPS but also increases frame time variance (when there is dynamic text). |
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UkoeHB
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49a06e9c76
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Avoid reallocating spans buffer in TextPipeline (#15012)
# Objective - Don't reallocate the spans vector every time TextPipeline updates a buffer. ## Solution - Cache the spans buffer in `TextPipeline`. This is possible through some [rust magic](https://users.rust-lang.org/t/how-to-cache-a-vectors-capacity/94478/10). |
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UkoeHB
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2b94a108ae
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Reuse TextLayoutInfo in queue_text (#14997)
# Objective Don't reallocate `TextLayoutInfo` every time it needs to be updated. ## Solution Reuse existing allocation. |
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UkoeHB
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41474226c3
|
Optimize UI text measurement (#15003)
# Objective - Avoid cloning the `CosmicBuffer` every time you create a new text measurement. ## Solution - Inject a buffer query when calculating layout so existing buffers can be reused. ## Testing - I tested the `text`, `text_debug`, and `text_wrap_debug` examples. - I did not do a performance test. |
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EdJoPaTo
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938d810766
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Apply unused_qualifications lint (#14828)
# Objective Fixes #14782 ## Solution Enable the lint and fix all upcoming hints (`--fix`). Also tried to figure out the false-positive (see review comment). Maybe split this PR up into multiple parts where only the last one enables the lint, so some can already be merged resulting in less many files touched / less potential for merge conflicts? Currently, there are some cases where it might be easier to read the code with the qualifier, so perhaps remove the import of it and adapt its cases? In the current stage it's just a plain adoption of the suggestions in order to have a base to discuss. ## Testing `cargo clippy` and `cargo run -p ci` are happy. |
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Giacomo Stevanato
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d7080369a7
|
Fix intra-doc links and make CI test them (#14076)
# Objective - Bevy currently has lot of invalid intra-doc links, let's fix them! - Also make CI test them, to avoid future regressions. - Helps with #1983 (but doesn't fix it, as there could still be explicit links to docs.rs that are broken) ## Solution - Make `cargo r -p ci -- doc-check` check fail on warnings (could also be changed to just some specific lints) - Manually fix all the warnings (note that in some cases it was unclear to me what the fix should have been, I'll try to highlight them in a self-review) |
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TotalKrill
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5986d5d309
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Cosmic text (#10193)
# Replace ab_glyph with the more capable cosmic-text Fixes #7616. Cosmic-text is a more mature text-rendering library that handles scripts and ligatures better than ab_glyph, it can also handle system fonts which can be implemented in bevy in the future Rebase of https://github.com/bevyengine/bevy/pull/8808 ## Changelog Replaces text renderer ab_glyph with cosmic-text The definition of the font size has changed with the migration to cosmic text. The behavior is now consistent with other platforms (e.g. the web), where the font size in pixels measures the height of the font (the distance between the top of the highest ascender and the bottom of the lowest descender). Font sizes in your app need to be rescaled to approximately 1.2x smaller; for example, if you were using a font size of 60.0, you should now use a font size of 50.0. ## Migration guide - `Text2dBounds` has been replaced with `TextBounds`, and it now accepts `Option`s to the bounds, instead of using `f32::INFINITY` to inidicate lack of bounds - Textsizes should be changed, dividing the current size with 1.2 will result in the same size as before. - `TextSettings` struct is removed - Feature `subpixel_alignment` has been removed since cosmic-text already does this automatically - TextBundles and things rendering texts requires the `CosmicBuffer` Component on them as well ## Suggested followups: - TextPipeline: reconstruct byte indices for keeping track of eventual cursors in text input - TextPipeline: (future work) split text entities into section entities - TextPipeline: (future work) text editing - Support line height as an option. Unitless `1.2` is the default used in browsers (1.2x font size). - Support System Fonts and font families - Example showing of animated text styles. Eg. throbbing hyperlinks --------- Co-authored-by: tigregalis <anak.harimau@gmail.com> Co-authored-by: Nico Burns <nico@nicoburns.com> Co-authored-by: sam edelsten <samedelsten1@gmail.com> Co-authored-by: Dimchikkk <velo.app1@gmail.com> Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> Co-authored-by: Rob Parrett <robparrett@gmail.com> |
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François Mockers
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d8f42608f9
|
text position: use size instead of bounds (#13858)
# Objective - #13846 introduced a bug where text not bound was not displayed ## Solution - bounds are infinite - use computed size instead, that already should be using the available bounds |
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robtfm
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01971f210e
|
fix non-exact text h-alignment (#13846)
# Objective when a parent container is auto-sized, text alignments `Center` and `Right` don't align to the center and right properly. fix it ## Solution ab_glyph positions return +/- values from an anchor point. we currently transform them to positive values from the min-x of the glyphs, and then offset from the left of the bounds. instead, we can keep the negative values as ab_glyph intended and offset from the left/middle/right of the bounds as appropriate. ## Testing texts with align left, center, right, all contained in the purple boxes: before (0.14.0-rc.2):  after:  code: ```rs use bevy::prelude::*; fn main() { App::new() .add_plugins(DefaultPlugins) .add_systems(Startup, setup) .run(); } fn setup(mut commands: Commands) { commands.spawn(Camera2dBundle::default()); for (left, justify) in [ (100.0, JustifyText::Left), (500.0, JustifyText::Center), (900.0, JustifyText::Right), ] { commands // container .spawn(NodeBundle { style: Style { flex_direction: FlexDirection::Column, position_type: PositionType::Absolute, left: Val::Px(left), top: Val::Px(100.0), width: Val::Px(300.0), ..Default::default() }, ..Default::default() }) .with_children(|commands| { commands.spawn(NodeBundle{ style: Style { flex_direction: FlexDirection::Row, height: Val::Px(75.0), ..Default::default() }, background_color: Color::srgb(1.0, 0.0, 1.0).into(), ..Default::default() }).with_children(|commands| { // a div that reduces the available size commands.spawn(NodeBundle { style: Style { width: Val::Px(75.0), ..Default::default() }, background_color: Color::srgb(0.0, 1.0, 0.0).into(), ..Default::default() }); // text with width=auto, but actual size will not be what it expcets due to the sibling div above commands.spawn(TextBundle { text: Text::from_section("Some text that wraps onto a second line", Default::default()).with_justify(justify), style: Style { align_self: AlignSelf::Center, ..Default::default() }, ..Default::default() }); }); }); } } ``` |
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James Liu
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56bcbb0975
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Forbid unsafe in most crates in the engine (#12684)
# 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. |
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Kanabenki
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312df3cec7
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Use warn_once where relevant instead of manually implementing a single warn check (#11693)
# Objective - Some places manually use a `bool` /`AtomicBool` to warn once. ## Solution - Use the `warn_once` macro which internally creates an `AtomicBool`. Downside: in some case the warning state would have been reset after recreating the struct carrying the warn state, whereas now it will always warn only once per program run (For example, if all `MeshPipeline`s are dropped or the `World` is recreated for `Local<bool>`/ a `bool` resource, which shouldn't happen over the course of a standard `App` run). --- ## Changelog ### Removed - `FontAtlasWarning` has been removed, but the corresponding warning is still emitted. |
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Félix Lescaudey de Maneville
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135c7240f1
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Texture Atlas rework (#5103)
# Objective > Old MR: #5072 > ~~Associated UI MR: #5070~~ > Adresses #1618 Unify sprite management ## Solution - Remove the `Handle<Image>` field in `TextureAtlas` which is the main cause for all the boilerplate - Remove the redundant `TextureAtlasSprite` component - Renamed `TextureAtlas` asset to `TextureAtlasLayout` ([suggestion](https://github.com/bevyengine/bevy/pull/5103#discussion_r917281844)) - Add a `TextureAtlas` component, containing the atlas layout handle and the section index The difference between this solution and #5072 is that instead of the `enum` approach is that we can more easily manipulate texture sheets without any breaking changes for classic `SpriteBundle`s (@mockersf [comment](https://github.com/bevyengine/bevy/pull/5072#issuecomment-1165836139)) Also, this approach is more *data oriented* extracting the `Handle<Image>` and avoiding complex texture atlas manipulations to retrieve the texture in both applicative and engine code. With this method, the only difference between a `SpriteBundle` and a `SpriteSheetBundle` is an **additional** component storing the atlas handle and the index. ~~This solution can be applied to `bevy_ui` as well (see #5070).~~ EDIT: I also applied this solution to Bevy UI ## Changelog - (**BREAKING**) Removed `TextureAtlasSprite` - (**BREAKING**) Renamed `TextureAtlas` to `TextureAtlasLayout` - (**BREAKING**) `SpriteSheetBundle`: - Uses a `Sprite` instead of a `TextureAtlasSprite` component - Has a `texture` field containing a `Handle<Image>` like the `SpriteBundle` - Has a new `TextureAtlas` component instead of a `Handle<TextureAtlasLayout>` - (**BREAKING**) `DynamicTextureAtlasBuilder::add_texture` takes an additional `&Handle<Image>` parameter - (**BREAKING**) `TextureAtlasLayout::from_grid` no longer takes a `Handle<Image>` parameter - (**BREAKING**) `TextureAtlasBuilder::finish` now returns a `Result<(TextureAtlasLayout, Handle<Image>), _>` - `bevy_text`: - `GlyphAtlasInfo` stores the texture `Handle<Image>` - `FontAtlas` stores the texture `Handle<Image>` - `bevy_ui`: - (**BREAKING**) Removed `UiAtlasImage` , the atlas bundle is now identical to the `ImageBundle` with an additional `TextureAtlas` ## Migration Guide * Sprites ```diff fn my_system( mut images: ResMut<Assets<Image>>, - mut atlases: ResMut<Assets<TextureAtlas>>, + mut atlases: ResMut<Assets<TextureAtlasLayout>>, asset_server: Res<AssetServer> ) { let texture_handle: asset_server.load("my_texture.png"); - let layout = TextureAtlas::from_grid(texture_handle, Vec2::new(25.0, 25.0), 5, 5, None, None); + let layout = TextureAtlasLayout::from_grid(Vec2::new(25.0, 25.0), 5, 5, None, None); let layout_handle = atlases.add(layout); commands.spawn(SpriteSheetBundle { - sprite: TextureAtlasSprite::new(0), - texture_atlas: atlas_handle, + atlas: TextureAtlas { + layout: layout_handle, + index: 0 + }, + texture: texture_handle, ..Default::default() }); } ``` * UI ```diff fn my_system( mut images: ResMut<Assets<Image>>, - mut atlases: ResMut<Assets<TextureAtlas>>, + mut atlases: ResMut<Assets<TextureAtlasLayout>>, asset_server: Res<AssetServer> ) { let texture_handle: asset_server.load("my_texture.png"); - let layout = TextureAtlas::from_grid(texture_handle, Vec2::new(25.0, 25.0), 5, 5, None, None); + let layout = TextureAtlasLayout::from_grid(Vec2::new(25.0, 25.0), 5, 5, None, None); let layout_handle = atlases.add(layout); commands.spawn(AtlasImageBundle { - texture_atlas_image: UiTextureAtlasImage { - index: 0, - flip_x: false, - flip_y: false, - }, - texture_atlas: atlas_handle, + atlas: TextureAtlas { + layout: layout_handle, + index: 0 + }, + image: UiImage { + texture: texture_handle, + flip_x: false, + flip_y: false, + }, ..Default::default() }); } ``` --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> Co-authored-by: François <mockersf@gmail.com> Co-authored-by: IceSentry <IceSentry@users.noreply.github.com> |
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Tygyh
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720d6dab82
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Change Window scale factor to f32 (adopted) (#10897)
# Objective - Finish the work done in #8942 . ## Solution - Rebase the changes made in #8942 and fix the issues stopping it from being merged earlier --------- Co-authored-by: Thomas <1234328+thmsgntz@users.noreply.github.com> |
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ickshonpe
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166686e0f2
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Rename TextAlignment to JustifyText. (#10854)
# Objective The name `TextAlignment` is really deceptive and almost every new user gets confused about the differences between aligning text with `TextAlignment`, aligning text with `Style` and aligning text with anchor (when using `Text2d`). ## Solution * Rename `TextAlignment` to `JustifyText`. The associated helper methods are also renamed. * Improve the doc comments for text explaining explicitly how the `JustifyText` component affects the arrangement of text. * Add some extra cases to the `text_debug` example that demonstate the differences between alignment using `JustifyText` and alignment using `Style`. <img width="757" alt="text_debug_2" src="https://github.com/bevyengine/bevy/assets/27962798/9d53e647-93f9-4bc7-8a20-0d9f783304d2"> --- ## Changelog * `TextAlignment` has been renamed to `JustifyText` * `TextBundle::with_text_alignment` has been renamed to `TextBundle::with_text_justify` * `Text::with_alignment` has been renamed to `Text::with_justify` * The `text_alignment` field of `TextMeasureInfo` has been renamed to `justification` ## Migration Guide * `TextAlignment` has been renamed to `JustifyText` * `TextBundle::with_text_alignment` has been renamed to `TextBundle::with_text_justify` * `Text::with_alignment` has been renamed to `Text::with_justify` * The `text_alignment` field of `TextMeasureInfo` has been renamed to `justification` |
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Mike
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687e379800
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Updates for rust 1.73 (#10035)
# Objective - Updates for rust 1.73 ## Solution - new doc check for `redundant_explicit_links` - updated to text for compile fail tests --- ## Changelog - updates for rust 1.73 |
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Ycy
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35de5e608e
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register TextLayoutInfo and TextFlags type. (#9919)
derive `Reflect` to `GlyphAtlasInfo`,`PositionedGlyph` and `TextLayoutInfo`. # Objective - I need reflection gets all components of the `TextBundle` and `clone_value` it ## Solution - registry it |
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ickshonpe
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9d9750b928
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TextLayoutInfo::size should hold the drawn size of the text, and not a scaled value. (#7794)
# Objective `TextLayoutInfo::size` isn't the drawn size of the text, but a scaled value. This is fragile, counter-intuitive and makes it awkward to retrieve the correct value. ## Solution Multiply `TextLayoutInfo::size` by the reciprocal of the window's scale factor after generating the text layout in `update_text2d_layout` and `bevy_ui::widget::text_system`. --- fixes: #7787 ## Changelog * Multiply `TextLayoutInfo::size` by the reciprocal of the scale factor after text computation to reflect the actual size of the text as drawn. * Reorder the operations in `extract_text2d_sprite` to apply the alignment offset before the scale factor scaling. ## Migration Guide The `size` value of `TextLayoutInfo` is stored in logical pixels and has been renamed to `logical_size`. There is no longer any need to divide by the window's scale factor to get the logical size. |
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Carter Anderson
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5eb292dc10
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Bevy Asset V2 (#8624)
# Bevy Asset V2 Proposal ## Why Does Bevy Need A New Asset System? Asset pipelines are a central part of the gamedev process. Bevy's current asset system is missing a number of features that make it non-viable for many classes of gamedev. After plenty of discussions and [a long community feedback period](https://github.com/bevyengine/bevy/discussions/3972), we've identified a number missing features: * **Asset Preprocessing**: it should be possible to "preprocess" / "compile" / "crunch" assets at "development time" rather than when the game starts up. This enables offloading expensive work from deployed apps, faster asset loading, less runtime memory usage, etc. * **Per-Asset Loader Settings**: Individual assets cannot define their own loaders that override the defaults. Additionally, they cannot provide per-asset settings to their loaders. This is a huge limitation, as many asset types don't provide all information necessary for Bevy _inside_ the asset. For example, a raw PNG image says nothing about how it should be sampled (ex: linear vs nearest). * **Asset `.meta` files**: assets should have configuration files stored adjacent to the asset in question, which allows the user to configure asset-type-specific settings. These settings should be accessible during the pre-processing phase. Modifying a `.meta` file should trigger a re-processing / re-load of the asset. It should be possible to configure asset loaders from the meta file. * **Processed Asset Hot Reloading**: Changes to processed assets (or their dependencies) should result in re-processing them and re-loading the results in live Bevy Apps. * **Asset Dependency Tracking**: The current bevy_asset has no good way to wait for asset dependencies to load. It punts this as an exercise for consumers of the loader apis, which is unreasonable and error prone. There should be easy, ergonomic ways to wait for assets to load and block some logic on an asset's entire dependency tree loading. * **Runtime Asset Loading**: it should be (optionally) possible to load arbitrary assets dynamically at runtime. This necessitates being able to deploy and run the asset server alongside Bevy Apps on _all platforms_. For example, we should be able to invoke the shader compiler at runtime, stream scenes from sources like the internet, etc. To keep deployed binaries (and startup times) small, the runtime asset server configuration should be configurable with different settings compared to the "pre processor asset server". * **Multiple Backends**: It should be possible to load assets from arbitrary sources (filesystems, the internet, remote asset serves, etc). * **Asset Packing**: It should be possible to deploy assets in compressed "packs", which makes it easier and more efficient to distribute assets with Bevy Apps. * **Asset Handoff**: It should be possible to hold a "live" asset handle, which correlates to runtime data, without actually holding the asset in memory. Ex: it must be possible to hold a reference to a GPU mesh generated from a "mesh asset" without keeping the mesh data in CPU memory * **Per-Platform Processed Assets**: Different platforms and app distributions have different capabilities and requirements. Some platforms need lower asset resolutions or different asset formats to operate within the hardware constraints of the platform. It should be possible to define per-platform asset processing profiles. And it should be possible to deploy only the assets required for a given platform. These features have architectural implications that are significant enough to require a full rewrite. The current Bevy Asset implementation got us this far, but it can take us no farther. This PR defines a brand new asset system that implements most of these features, while laying the foundations for the remaining features to be built. ## Bevy Asset V2 Here is a quick overview of the features introduced in this PR. * **Asset Preprocessing**: Preprocess assets at development time into more efficient (and configurable) representations * **Dependency Aware**: Dependencies required to process an asset are tracked. If an asset's processed dependency changes, it will be reprocessed * **Hot Reprocessing/Reloading**: detect changes to asset source files, reprocess them if they have changed, and then hot-reload them in Bevy Apps. * **Only Process Changes**: Assets are only re-processed when their source file (or meta file) has changed. This uses hashing and timestamps to avoid processing assets that haven't changed. * **Transactional and Reliable**: Uses write-ahead logging (a technique commonly used by databases) to recover from crashes / forced-exits. Whenever possible it avoids full-reprocessing / only uncompleted transactions will be reprocessed. When the processor is running in parallel with a Bevy App, processor asset writes block Bevy App asset reads. Reading metadata + asset bytes is guaranteed to be transactional / correctly paired. * **Portable / Run anywhere / Database-free**: The processor does not rely on an in-memory database (although it uses some database techniques for reliability). This is important because pretty much all in-memory databases have unsupported platforms or build complications. * **Configure Processor Defaults Per File Type**: You can say "use this processor for all files of this type". * **Custom Processors**: The `Processor` trait is flexible and unopinionated. It can be implemented by downstream plugins. * **LoadAndSave Processors**: Most asset processing scenarios can be expressed as "run AssetLoader A, save the results using AssetSaver X, and then load the result using AssetLoader B". For example, load this png image using `PngImageLoader`, which produces an `Image` asset and then save it using `CompressedImageSaver` (which also produces an `Image` asset, but in a compressed format), which takes an `Image` asset as input. This means if you have an `AssetLoader` for an asset, you are already half way there! It also means that you can share AssetSavers across multiple loaders. Because `CompressedImageSaver` accepts Bevy's generic Image asset as input, it means you can also use it with some future `JpegImageLoader`. * **Loader and Saver Settings**: Asset Loaders and Savers can now define their own settings types, which are passed in as input when an asset is loaded / saved. Each asset can define its own settings. * **Asset `.meta` files**: configure asset loaders, their settings, enable/disable processing, and configure processor settings * **Runtime Asset Dependency Tracking** Runtime asset dependencies (ex: if an asset contains a `Handle<Image>`) are tracked by the asset server. An event is emitted when an asset and all of its dependencies have been loaded * **Unprocessed Asset Loading**: Assets do not require preprocessing. They can be loaded directly. A processed asset is just a "normal" asset with some extra metadata. Asset Loaders don't need to know or care about whether or not an asset was processed. * **Async Asset IO**: Asset readers/writers use async non-blocking interfaces. Note that because Rust doesn't yet support async traits, there is a bit of manual Boxing / Future boilerplate. This will hopefully be removed in the near future when Rust gets async traits. * **Pluggable Asset Readers and Writers**: Arbitrary asset source readers/writers are supported, both by the processor and the asset server. * **Better Asset Handles** * **Single Arc Tree**: Asset Handles now use a single arc tree that represents the lifetime of the asset. This makes their implementation simpler, more efficient, and allows us to cheaply attach metadata to handles. Ex: the AssetPath of a handle is now directly accessible on the handle itself! * **Const Typed Handles**: typed handles can be constructed in a const context. No more weird "const untyped converted to typed at runtime" patterns! * **Handles and Ids are Smaller / Faster To Hash / Compare**: Typed `Handle<T>` is now much smaller in memory and `AssetId<T>` is even smaller. * **Weak Handle Usage Reduction**: In general Handles are now considered to be "strong". Bevy features that previously used "weak `Handle<T>`" have been ported to `AssetId<T>`, which makes it statically clear that the features do not hold strong handles (while retaining strong type information). Currently Handle::Weak still exists, but it is very possible that we can remove that entirely. * **Efficient / Dense Asset Ids**: Assets now have efficient dense runtime asset ids, which means we can avoid expensive hash lookups. Assets are stored in Vecs instead of HashMaps. There are now typed and untyped ids, which means we no longer need to store dynamic type information in the ID for typed handles. "AssetPathId" (which was a nightmare from a performance and correctness standpoint) has been entirely removed in favor of dense ids (which are retrieved for a path on load) * **Direct Asset Loading, with Dependency Tracking**: Assets that are defined at runtime can still have their dependencies tracked by the Asset Server (ex: if you create a material at runtime, you can still wait for its textures to load). This is accomplished via the (currently optional) "asset dependency visitor" trait. This system can also be used to define a set of assets to load, then wait for those assets to load. * **Async folder loading**: Folder loading also uses this system and immediately returns a handle to the LoadedFolder asset, which means folder loading no longer blocks on directory traversals. * **Improved Loader Interface**: Loaders now have a specific "top level asset type", which makes returning the top-level asset simpler and statically typed. * **Basic Image Settings and Processing**: Image assets can now be processed into the gpu-friendly Basic Universal format. The ImageLoader now has a setting to define what format the image should be loaded as. Note that this is just a minimal MVP ... plenty of additional work to do here. To demo this, enable the `basis-universal` feature and turn on asset processing. * **Simpler Audio Play / AudioSink API**: Asset handle providers are cloneable, which means the Audio resource can mint its own handles. This means you can now do `let sink_handle = audio.play(music)` instead of `let sink_handle = audio_sinks.get_handle(audio.play(music))`. Note that this might still be replaced by https://github.com/bevyengine/bevy/pull/8424. **Removed Handle Casting From Engine Features**: Ex: FontAtlases no longer use casting between handle types ## Using The New Asset System ### Normal Unprocessed Asset Loading By default the `AssetPlugin` does not use processing. It behaves pretty much the same way as the old system. If you are defining a custom asset, first derive `Asset`: ```rust #[derive(Asset)] struct Thing { value: String, } ``` Initialize the asset: ```rust app.init_asset:<Thing>() ``` Implement a new `AssetLoader` for it: ```rust #[derive(Default)] struct ThingLoader; #[derive(Serialize, Deserialize, Default)] pub struct ThingSettings { some_setting: bool, } impl AssetLoader for ThingLoader { type Asset = Thing; type Settings = ThingSettings; fn load<'a>( &'a self, reader: &'a mut Reader, settings: &'a ThingSettings, load_context: &'a mut LoadContext, ) -> BoxedFuture<'a, Result<Thing, anyhow::Error>> { Box::pin(async move { let mut bytes = Vec::new(); reader.read_to_end(&mut bytes).await?; // convert bytes to value somehow Ok(Thing { value }) }) } fn extensions(&self) -> &[&str] { &["thing"] } } ``` Note that this interface will get much cleaner once Rust gets support for async traits. `Reader` is an async futures_io::AsyncRead. You can stream bytes as they come in or read them all into a `Vec<u8>`, depending on the context. You can use `let handle = load_context.load(path)` to kick off a dependency load, retrieve a handle, and register the dependency for the asset. Then just register the loader in your Bevy app: ```rust app.init_asset_loader::<ThingLoader>() ``` Now just add your `Thing` asset files into the `assets` folder and load them like this: ```rust fn system(asset_server: Res<AssetServer>) { let handle = Handle<Thing> = asset_server.load("cool.thing"); } ``` You can check load states directly via the asset server: ```rust if asset_server.load_state(&handle) == LoadState::Loaded { } ``` You can also listen for events: ```rust fn system(mut events: EventReader<AssetEvent<Thing>>, handle: Res<SomeThingHandle>) { for event in events.iter() { if event.is_loaded_with_dependencies(&handle) { } } } ``` Note the new `AssetEvent::LoadedWithDependencies`, which only fires when the asset is loaded _and_ all dependencies (and their dependencies) have loaded. Unlike the old asset system, for a given asset path all `Handle<T>` values point to the same underlying Arc. This means Handles can cheaply hold more asset information, such as the AssetPath: ```rust // prints the AssetPath of the handle info!("{:?}", handle.path()) ``` ### Processed Assets Asset processing can be enabled via the `AssetPlugin`. When developing Bevy Apps with processed assets, do this: ```rust app.add_plugins(DefaultPlugins.set(AssetPlugin::processed_dev())) ``` This runs the `AssetProcessor` in the background with hot-reloading. It reads assets from the `assets` folder, processes them, and writes them to the `.imported_assets` folder. Asset loads in the Bevy App will wait for a processed version of the asset to become available. If an asset in the `assets` folder changes, it will be reprocessed and hot-reloaded in the Bevy App. When deploying processed Bevy apps, do this: ```rust app.add_plugins(DefaultPlugins.set(AssetPlugin::processed())) ``` This does not run the `AssetProcessor` in the background. It behaves like `AssetPlugin::unprocessed()`, but reads assets from `.imported_assets`. When the `AssetProcessor` is running, it will populate sibling `.meta` files for assets in the `assets` folder. Meta files for assets that do not have a processor configured look like this: ```rust ( meta_format_version: "1.0", asset: Load( loader: "bevy_render::texture::image_loader::ImageLoader", settings: ( format: FromExtension, ), ), ) ``` This is metadata for an image asset. For example, if you have `assets/my_sprite.png`, this could be the metadata stored at `assets/my_sprite.png.meta`. Meta files are totally optional. If no metadata exists, the default settings will be used. In short, this file says "load this asset with the ImageLoader and use the file extension to determine the image type". This type of meta file is supported in all AssetPlugin modes. If in `Unprocessed` mode, the asset (with the meta settings) will be loaded directly. If in `ProcessedDev` mode, the asset file will be copied directly to the `.imported_assets` folder. The meta will also be copied directly to the `.imported_assets` folder, but with one addition: ```rust ( meta_format_version: "1.0", processed_info: Some(( hash: 12415480888597742505, full_hash: 14344495437905856884, process_dependencies: [], )), asset: Load( loader: "bevy_render::texture::image_loader::ImageLoader", settings: ( format: FromExtension, ), ), ) ``` `processed_info` contains `hash` (a direct hash of the asset and meta bytes), `full_hash` (a hash of `hash` and the hashes of all `process_dependencies`), and `process_dependencies` (the `path` and `full_hash` of every process_dependency). A "process dependency" is an asset dependency that is _directly_ used when processing the asset. Images do not have process dependencies, so this is empty. When the processor is enabled, you can use the `Process` metadata config: ```rust ( meta_format_version: "1.0", asset: Process( processor: "bevy_asset::processor::process::LoadAndSave<bevy_render::texture::image_loader::ImageLoader, bevy_render::texture::compressed_image_saver::CompressedImageSaver>", settings: ( loader_settings: ( format: FromExtension, ), saver_settings: ( generate_mipmaps: true, ), ), ), ) ``` This configures the asset to use the `LoadAndSave` processor, which runs an AssetLoader and feeds the result into an AssetSaver (which saves the given Asset and defines a loader to load it with). (for terseness LoadAndSave will likely get a shorter/friendlier type name when [Stable Type Paths](#7184) lands). `LoadAndSave` is likely to be the most common processor type, but arbitrary processors are supported. `CompressedImageSaver` saves an `Image` in the Basis Universal format and configures the ImageLoader to load it as basis universal. The `AssetProcessor` will read this meta, run it through the LoadAndSave processor, and write the basis-universal version of the image to `.imported_assets`. The final metadata will look like this: ```rust ( meta_format_version: "1.0", processed_info: Some(( hash: 905599590923828066, full_hash: 9948823010183819117, process_dependencies: [], )), asset: Load( loader: "bevy_render::texture::image_loader::ImageLoader", settings: ( format: Format(Basis), ), ), ) ``` To try basis-universal processing out in Bevy examples, (for example `sprite.rs`), change `add_plugins(DefaultPlugins)` to `add_plugins(DefaultPlugins.set(AssetPlugin::processed_dev()))` and run with the `basis-universal` feature enabled: `cargo run --features=basis-universal --example sprite`. To create a custom processor, there are two main paths: 1. Use the `LoadAndSave` processor with an existing `AssetLoader`. Implement the `AssetSaver` trait, register the processor using `asset_processor.register_processor::<LoadAndSave<ImageLoader, CompressedImageSaver>>(image_saver.into())`. 2. Implement the `Process` trait directly and register it using: `asset_processor.register_processor(thing_processor)`. You can configure default processors for file extensions like this: ```rust asset_processor.set_default_processor::<ThingProcessor>("thing") ``` There is one more metadata type to be aware of: ```rust ( meta_format_version: "1.0", asset: Ignore, ) ``` This will ignore the asset during processing / prevent it from being written to `.imported_assets`. The AssetProcessor stores a transaction log at `.imported_assets/log` and uses it to gracefully recover from unexpected stops. This means you can force-quit the processor (and Bevy Apps running the processor in parallel) at arbitrary times! `.imported_assets` is "local state". It should _not_ be checked into source control. It should also be considered "read only". In practice, you _can_ modify processed assets and processed metadata if you really need to test something. But those modifications will not be represented in the hashes of the assets, so the processed state will be "out of sync" with the source assets. The processor _will not_ fix this for you. Either revert the change after you have tested it, or delete the processed files so they can be re-populated. ## Open Questions There are a number of open questions to be discussed. We should decide if they need to be addressed in this PR and if so, how we will address them: ### Implied Dependencies vs Dependency Enumeration There are currently two ways to populate asset dependencies: * **Implied via AssetLoaders**: if an AssetLoader loads an asset (and retrieves a handle), a dependency is added to the list. * **Explicit via the optional Asset::visit_dependencies**: if `server.load_asset(my_asset)` is called, it will call `my_asset.visit_dependencies`, which will grab dependencies that have been manually defined for the asset via the Asset trait impl (which can be derived). This means that defining explicit dependencies is optional for "loaded assets". And the list of dependencies is always accurate because loaders can only produce Handles if they register dependencies. If an asset was loaded with an AssetLoader, it only uses the implied dependencies. If an asset was created at runtime and added with `asset_server.load_asset(MyAsset)`, it will use `Asset::visit_dependencies`. However this can create a behavior mismatch between loaded assets and equivalent "created at runtime" assets if `Assets::visit_dependencies` doesn't exactly match the dependencies produced by the AssetLoader. This behavior mismatch can be resolved by completely removing "implied loader dependencies" and requiring `Asset::visit_dependencies` to supply dependency data. But this creates two problems: * It makes defining loaded assets harder and more error prone: Devs must remember to manually annotate asset dependencies with `#[dependency]` when deriving `Asset`. For more complicated assets (such as scenes), the derive likely wouldn't be sufficient and a manual `visit_dependencies` impl would be required. * Removes the ability to immediately kick off dependency loads: When AssetLoaders retrieve a Handle, they also immediately kick off an asset load for the handle, which means it can start loading in parallel _before_ the asset finishes loading. For large assets, this could be significant. (although this could be mitigated for processed assets if we store dependencies in the processed meta file and load them ahead of time) ### Eager ProcessorDev Asset Loading I made a controversial call in the interest of fast startup times ("time to first pixel") for the "processor dev mode configuration". When initializing the AssetProcessor, current processed versions of unchanged assets are yielded immediately, even if their dependencies haven't been checked yet for reprocessing. This means that non-current-state-of-filesystem-but-previously-valid assets might be returned to the App first, then hot-reloaded if/when their dependencies change and the asset is reprocessed. Is this behavior desirable? There is largely one alternative: do not yield an asset from the processor to the app until all of its dependencies have been checked for changes. In some common cases (load dependency has not changed since last run) this will increase startup time. The main question is "by how much" and is that slower startup time worth it in the interest of only yielding assets that are true to the current state of the filesystem. Should this be configurable? I'm starting to think we should only yield an asset after its (historical) dependencies have been checked for changes + processed as necessary, but I'm curious what you all think. ### Paths Are Currently The Only Canonical ID / Do We Want Asset UUIDs? In this implementation AssetPaths are the only canonical asset identifier (just like the previous Bevy Asset system and Godot). Moving assets will result in re-scans (and currently reprocessing, although reprocessing can easily be avoided with some changes). Asset renames/moves will break code and assets that rely on specific paths, unless those paths are fixed up. Do we want / need "stable asset uuids"? Introducing them is very possible: 1. Generate a UUID and include it in .meta files 2. Support UUID in AssetPath 3. Generate "asset indices" which are loaded on startup and map UUIDs to paths. 4 (maybe). Consider only supporting UUIDs for processed assets so we can generate quick-to-load indices instead of scanning meta files. The main "pro" is that assets referencing UUIDs don't need to be migrated when a path changes. The main "con" is that UUIDs cannot be "lazily resolved" like paths. They need a full view of all assets to answer the question "does this UUID exist". Which means UUIDs require the AssetProcessor to fully finish startup scans before saying an asset doesnt exist. And they essentially require asset pre-processing to use in apps, because scanning all asset metadata files at runtime to resolve a UUID is not viable for medium-to-large apps. It really requires a pre-generated UUID index, which must be loaded before querying for assets. I personally think this should be investigated in a separate PR. Paths aren't going anywhere ... _everyone_ uses filesystems (and filesystem-like apis) to manage their asset source files. I consider them permanent canonical asset information. Additionally, they behave well for both processed and unprocessed asset modes. Given that Bevy is supporting both, this feels like the right canonical ID to start with. UUIDS (and maybe even other indexed-identifier types) can be added later as necessary. ### Folder / File Naming Conventions All asset processing config currently lives in the `.imported_assets` folder. The processor transaction log is in `.imported_assets/log`. Processed assets are added to `.imported_assets/Default`, which will make migrating to processed asset profiles (ex: a `.imported_assets/Mobile` profile) a non-breaking change. It also allows us to create top-level files like `.imported_assets/log` without it being interpreted as an asset. Meta files currently have a `.meta` suffix. Do we like these names and conventions? ### Should the `AssetPlugin::processed_dev` configuration enable `watch_for_changes` automatically? Currently it does (which I think makes sense), but it does make it the only configuration that enables watch_for_changes by default. ### Discuss on_loaded High Level Interface: This PR includes a very rough "proof of concept" `on_loaded` system adapter that uses the `LoadedWithDependencies` event in combination with `asset_server.load_asset` dependency tracking to support this pattern ```rust fn main() { App::new() .init_asset::<MyAssets>() .add_systems(Update, on_loaded(create_array_texture)) .run(); } #[derive(Asset, Clone)] struct MyAssets { #[dependency] picture_of_my_cat: Handle<Image>, #[dependency] picture_of_my_other_cat: Handle<Image>, } impl FromWorld for ArrayTexture { fn from_world(world: &mut World) -> Self { picture_of_my_cat: server.load("meow.png"), picture_of_my_other_cat: server.load("meeeeeeeow.png"), } } fn spawn_cat(In(my_assets): In<MyAssets>, mut commands: Commands) { commands.spawn(SpriteBundle { texture: my_assets.picture_of_my_cat.clone(), ..default() }); commands.spawn(SpriteBundle { texture: my_assets.picture_of_my_other_cat.clone(), ..default() }); } ``` The implementation is _very_ rough. And it is currently unsafe because `bevy_ecs` doesn't expose some internals to do this safely from inside `bevy_asset`. There are plenty of unanswered questions like: * "do we add a Loadable" derive? (effectively automate the FromWorld implementation above) * Should `MyAssets` even be an Asset? (largely implemented this way because it elegantly builds on `server.load_asset(MyAsset { .. })` dependency tracking). We should think hard about what our ideal API looks like (and if this is a pattern we want to support). Not necessarily something we need to solve in this PR. The current `on_loaded` impl should probably be removed from this PR before merging. ## Clarifying Questions ### What about Assets as Entities? This Bevy Asset V2 proposal implementation initially stored Assets as ECS Entities. Instead of `AssetId<T>` + the `Assets<T>` resource it used `Entity` as the asset id and Asset values were just ECS components. There are plenty of compelling reasons to do this: 1. Easier to inline assets in Bevy Scenes (as they are "just" normal entities + components) 2. More flexible queries: use the power of the ECS to filter assets (ex: `Query<Mesh, With<Tree>>`). 3. Extensible. Users can add arbitrary component data to assets. 4. Things like "component visualization tools" work out of the box to visualize asset data. However Assets as Entities has a ton of caveats right now: * We need to be able to allocate entity ids without a direct World reference (aka rework id allocator in Entities ... i worked around this in my prototypes by just pre allocating big chunks of entities) * We want asset change events in addition to ECS change tracking ... how do we populate them when mutations can come from anywhere? Do we use Changed queries? This would require iterating over the change data for all assets every frame. Is this acceptable or should we implement a new "event based" component change detection option? * Reconciling manually created assets with asset-system managed assets has some nuance (ex: are they "loaded" / do they also have that component metadata?) * "how do we handle "static" / default entity handles" (ties in to the Entity Indices discussion: https://github.com/bevyengine/bevy/discussions/8319). This is necessary for things like "built in" assets and default handles in things like SpriteBundle. * Storing asset information as a component makes it easy to "invalidate" asset state by removing the component (or forcing modifications). Ideally we have ways to lock this down (some combination of Rust type privacy and ECS validation) In practice, how we store and identify assets is a reasonably superficial change (porting off of Assets as Entities and implementing dedicated storage + ids took less than a day). So once we sort out the remaining challenges the flip should be straightforward. Additionally, I do still have "Assets as Entities" in my commit history, so we can reuse that work. I personally think "assets as entities" is a good endgame, but it also doesn't provide _significant_ value at the moment and it certainly isn't ready yet with the current state of things. ### Why not Distill? [Distill](https://github.com/amethyst/distill) is a high quality fully featured asset system built in Rust. It is very natural to ask "why not just use Distill?". It is also worth calling out that for awhile, [we planned on adopting Distill / I signed off on it](https://github.com/bevyengine/bevy/issues/708). However I think Bevy has a number of constraints that make Distill adoption suboptimal: * **Architectural Simplicity:** * Distill's processor requires an in-memory database (lmdb) and RPC networked API (using Cap'n Proto). Each of these introduces API complexity that increases maintenance burden and "code grokability". Ignoring tests, documentation, and examples, Distill has 24,237 lines of Rust code (including generated code for RPC + database interactions). If you ignore generated code, it has 11,499 lines. * Bevy builds the AssetProcessor and AssetServer using pluggable AssetReader/AssetWriter Rust traits with simple io interfaces. They do not necessitate databases or RPC interfaces (although Readers/Writers could use them if that is desired). Bevy Asset V2 (at the time of writing this PR) is 5,384 lines of Rust code (ignoring tests, documentation, and examples). Grain of salt: Distill does have more features currently (ex: Asset Packing, GUIDS, remote-out-of-process asset processor). I do plan to implement these features in Bevy Asset V2 and I personally highly doubt they will meaningfully close the 6115 lines-of-code gap. * This complexity gap (which while illustrated by lines of code, is much bigger than just that) is noteworthy to me. Bevy should be hackable and there are pillars of Distill that are very hard to understand and extend. This is a matter of opinion (and Bevy Asset V2 also has complicated areas), but I think Bevy Asset V2 is much more approachable for the average developer. * Necessary disclaimer: counting lines of code is an extremely rough complexity metric. Read the code and form your own opinions. * **Optional Asset Processing:** Not all Bevy Apps (or Bevy App developers) need / want asset preprocessing. Processing increases the complexity of the development environment by introducing things like meta files, imported asset storage, running processors in the background, waiting for processing to finish, etc. Distill _requires_ preprocessing to work. With Bevy Asset V2 processing is fully opt-in. The AssetServer isn't directly aware of asset processors at all. AssetLoaders only care about converting bytes to runtime Assets ... they don't know or care if the bytes were pre-processed or not. Processing is "elegantly" (forgive my self-congratulatory phrasing) layered on top and builds on the existing Asset system primitives. * **Direct Filesystem Access to Processed Asset State:** Distill stores processed assets in a database. This makes debugging / inspecting the processed outputs harder (either requires special tooling to query the database or they need to be "deployed" to be inspected). Bevy Asset V2, on the other hand, stores processed assets in the filesystem (by default ... this is configurable). This makes interacting with the processed state more natural. Note that both Godot and Unity's new asset system store processed assets in the filesystem. * **Portability**: Because Distill's processor uses lmdb and RPC networking, it cannot be run on certain platforms (ex: lmdb is a non-rust dependency that cannot run on the web, some platforms don't support running network servers). Bevy should be able to process assets everywhere (ex: run the Bevy Editor on the web, compile + process shaders on mobile, etc). Distill does partially mitigate this problem by supporting "streaming" assets via the RPC protocol, but this is not a full solve from my perspective. And Bevy Asset V2 can (in theory) also stream assets (without requiring RPC, although this isn't implemented yet) Note that I _do_ still think Distill would be a solid asset system for Bevy. But I think the approach in this PR is a better solve for Bevy's specific "asset system requirements". ### Doesn't async-fs just shim requests to "sync" `std::fs`? What is the point? "True async file io" has limited / spotty platform support. async-fs (and the rust async ecosystem generally ... ex Tokio) currently use async wrappers over std::fs that offload blocking requests to separate threads. This may feel unsatisfying, but it _does_ still provide value because it prevents our task pools from blocking on file system operations (which would prevent progress when there are many tasks to do, but all threads in a pool are currently blocking on file system ops). Additionally, using async APIs for our AssetReaders and AssetWriters also provides value because we can later add support for "true async file io" for platforms that support it. _And_ we can implement other "true async io" asset backends (such as networked asset io). ## Draft TODO - [x] Fill in missing filesystem event APIs: file removed event (which is expressed as dangling RenameFrom events in some cases), file/folder renamed event - [x] Assets without loaders are not moved to the processed folder. This breaks things like referenced `.bin` files for GLTFs. This should be configurable per-non-asset-type. - [x] Initial implementation of Reflect and FromReflect for Handle. The "deserialization" parity bar is low here as this only worked with static UUIDs in the old impl ... this is a non-trivial problem. Either we add a Handle::AssetPath variant that gets "upgraded" to a strong handle on scene load or we use a separate AssetRef type for Bevy scenes (which is converted to a runtime Handle on load). This deserves its own discussion in a different pr. - [x] Populate read_asset_bytes hash when run by the processor (a bit of a special case .. when run by the processor the processed meta will contain the hash so we don't need to compute it on the spot, but we don't want/need to read the meta when run by the main AssetServer) - [x] Delay hot reloading: currently filesystem events are handled immediately, which creates timing issues in some cases. For example hot reloading images can sometimes break because the image isn't finished writing. We should add a delay, likely similar to the [implementation in this PR](https://github.com/bevyengine/bevy/pull/8503). - [x] Port old platform-specific AssetIo implementations to the new AssetReader interface (currently missing Android and web) - [x] Resolve on_loaded unsafety (either by removing the API entirely or removing the unsafe) - [x] Runtime loader setting overrides - [x] Remove remaining unwraps that should be error-handled. There are number of TODOs here - [x] Pretty AssetPath Display impl - [x] Document more APIs - [x] Resolve spurious "reloading because it has changed" events (to repro run load_gltf with `processed_dev()`) - [x] load_dependency hot reloading currently only works for processed assets. If processing is disabled, load_dependency changes are not hot reloaded. - [x] Replace AssetInfo dependency load/fail counters with `loading_dependencies: HashSet<UntypedAssetId>` to prevent reloads from (potentially) breaking counters. Storing this will also enable "dependency reloaded" events (see [Next Steps](#next-steps)) - [x] Re-add filesystem watcher cargo feature gate (currently it is not optional) - [ ] Migration Guide - [ ] Changelog ## Followup TODO - [ ] Replace "eager unchanged processed asset loading" behavior with "don't returned unchanged processed asset until dependencies have been checked". - [ ] Add true `Ignore` AssetAction that does not copy the asset to the imported_assets folder. - [ ] Finish "live asset unloading" (ex: free up CPU asset memory after uploading an image to the GPU), rethink RenderAssets, and port renderer features. The `Assets` collection uses `Option<T>` for asset storage to support its removal. (1) the Option might not actually be necessary ... might be able to just remove from the collection entirely (2) need to finalize removal apis - [ ] Try replacing the "channel based" asset id recycling with something a bit more efficient (ex: we might be able to use raw atomic ints with some cleverness) - [ ] Consider adding UUIDs to processed assets (scoped just to helping identify moved assets ... not exposed to load queries ... see [Next Steps](#next-steps)) - [ ] Store "last modified" source asset and meta timestamps in processed meta files to enable skipping expensive hashing when the file wasn't changed - [ ] Fix "slow loop" handle drop fix - [ ] Migrate to TypeName - [x] Handle "loader preregistration". See #9429 ## Next Steps * **Configurable per-type defaults for AssetMeta**: It should be possible to add configuration like "all png image meta should default to using nearest sampling" (currently this hard-coded per-loader/processor Settings::default() impls). Also see the "Folder Meta" bullet point. * **Avoid Reprocessing on Asset Renames / Moves**: See the "canonical asset ids" discussion in [Open Questions](#open-questions) and the relevant bullet point in [Draft TODO](#draft-todo). Even without canonical ids, folder renames could avoid reprocessing in some cases. * **Multiple Asset Sources**: Expand AssetPath to support "asset source names" and support multiple AssetReaders in the asset server (ex: `webserver://some_path/image.png` backed by an Http webserver AssetReader). The "default" asset reader would use normal `some_path/image.png` paths. Ideally this works in combination with multiple AssetWatchers for hot-reloading * **Stable Type Names**: this pr removes the TypeUuid requirement from assets in favor of `std::any::type_name`. This makes defining assets easier (no need to generate a new uuid / use weird proc macro syntax). It also makes reading meta files easier (because things have "friendly names"). We also use type names for components in scene files. If they are good enough for components, they are good enough for assets. And consistency across Bevy pillars is desirable. However, `std::any::type_name` is not guaranteed to be stable (although in practice it is). We've developed a [stable type path](https://github.com/bevyengine/bevy/pull/7184) to resolve this, which should be adopted when it is ready. * **Command Line Interface**: It should be possible to run the asset processor in a separate process from the command line. This will also require building a network-server-backed AssetReader to communicate between the app and the processor. We've been planning to build a "bevy cli" for awhile. This seems like a good excuse to build it. * **Asset Packing**: This is largely an additive feature, so it made sense to me to punt this until we've laid the foundations in this PR. * **Per-Platform Processed Assets**: It should be possible to generate assets for multiple platforms by supporting multiple "processor profiles" per asset (ex: compress with format X on PC and Y on iOS). I think there should probably be arbitrary "profiles" (which can be separate from actual platforms), which are then assigned to a given platform when generating the final asset distribution for that platform. Ex: maybe devs want a "Mobile" profile that is shared between iOS and Android. Or a "LowEnd" profile shared between web and mobile. * **Versioning and Migrations**: Assets, Loaders, Savers, and Processors need to have versions to determine if their schema is valid. If an asset / loader version is incompatible with the current version expected at runtime, the processor should be able to migrate them. I think we should try using Bevy Reflect for this, as it would allow us to load the old version as a dynamic Reflect type without actually having the old Rust type. It would also allow us to define "patches" to migrate between versions (Bevy Reflect devs are currently working on patching). The `.meta` file already has its own format version. Migrating that to new versions should also be possible. * **Real Copy-on-write AssetPaths**: Rust's actual Cow (clone-on-write type) currently used by AssetPath can still result in String clones that aren't actually necessary (cloning an Owned Cow clones the contents). Bevy's asset system requires cloning AssetPaths in a number of places, which result in actual clones of the internal Strings. This is not efficient. AssetPath internals should be reworked to exhibit truer cow-like-behavior that reduces String clones to the absolute minimum. * **Consider processor-less processing**: In theory the AssetServer could run processors "inline" even if the background AssetProcessor is disabled. If we decide this is actually desirable, we could add this. But I don't think its a priority in the short or medium term. * **Pre-emptive dependency loading**: We could encode dependencies in processed meta files, which could then be used by the Asset Server to kick of dependency loads as early as possible (prior to starting the actual asset load). Is this desirable? How much time would this save in practice? * **Optimize Processor With UntypedAssetIds**: The processor exclusively uses AssetPath to identify assets currently. It might be possible to swap these out for UntypedAssetIds in some places, which are smaller / cheaper to hash and compare. * **One to Many Asset Processing**: An asset source file that produces many assets currently must be processed into a single "processed" asset source. If labeled assets can be written separately they can each have their own configured savers _and_ they could be loaded more granularly. Definitely worth exploring! * **Automatically Track "Runtime-only" Asset Dependencies**: Right now, tracking "created at runtime" asset dependencies requires adding them via `asset_server.load_asset(StandardMaterial::default())`. I think with some cleverness we could also do this for `materials.add(StandardMaterial::default())`, making tracking work "everywhere". There are challenges here relating to change detection / ensuring the server is made aware of dependency changes. This could be expensive in some cases. * **"Dependency Changed" events**: Some assets have runtime artifacts that need to be re-generated when one of their dependencies change (ex: regenerate a material's bind group when a Texture needs to change). We are generating the dependency graph so we can definitely produce these events. Buuuuut generating these events will have a cost / they could be high frequency for some assets, so we might want this to be opt-in for specific cases. * **Investigate Storing More Information In Handles**: Handles can now store arbitrary information, which makes it cheaper and easier to access. How much should we move into them? Canonical asset load states (via atomics)? (`handle.is_loaded()` would be very cool). Should we store the entire asset and remove the `Assets<T>` collection? (`Arc<RwLock<Option<Image>>>`?) * **Support processing and loading files without extensions**: This is a pretty arbitrary restriction and could be supported with very minimal changes. * **Folder Meta**: It would be nice if we could define per folder processor configuration defaults (likely in a `.meta` or `.folder_meta` file). Things like "default to linear filtering for all Images in this folder". * **Replace async_broadcast with event-listener?** This might be approximately drop-in for some uses and it feels more light weight * **Support Running the AssetProcessor on the Web**: Most of the hard work is done here, but there are some easy straggling TODOs (make the transaction log an interface instead of a direct file writer so we can write a web storage backend, implement an AssetReader/AssetWriter that reads/writes to something like LocalStorage). * **Consider identifying and preventing circular dependencies**: This is especially important for "processor dependencies", as processing will silently never finish in these cases. * **Built-in/Inlined Asset Hot Reloading**: This PR regresses "built-in/inlined" asset hot reloading (previously provided by the DebugAssetServer). I'm intentionally punting this because I think it can be cleanly implemented with "multiple asset sources" by registering a "debug asset source" (ex: `debug://bevy_pbr/src/render/pbr.wgsl` asset paths) in combination with an AssetWatcher for that asset source and support for "manually loading pats with asset bytes instead of AssetReaders". The old DebugAssetServer was quite nasty and I'd love to avoid that hackery going forward. * **Investigate ways to remove double-parsing meta files**: Parsing meta files currently involves parsing once with "minimal" versions of the meta file to extract the type name of the loader/processor config, then parsing again to parse the "full" meta. This is suboptimal. We should be able to define custom deserializers that (1) assume the loader/processor type name comes first (2) dynamically looks up the loader/processor registrations to deserialize settings in-line (similar to components in the bevy scene format). Another alternative: deserialize as dynamic Reflect objects and then convert. * **More runtime loading configuration**: Support using the Handle type as a hint to select an asset loader (instead of relying on AssetPath extensions) * **More high level Processor trait implementations**: For example, it might be worth adding support for arbitrary chains of "asset transforms" that modify an in-memory asset representation between loading and saving. (ex: load a Mesh, run a `subdivide_mesh` transform, followed by a `flip_normals` transform, then save the mesh to an efficient compressed format). * **Bevy Scene Handle Deserialization**: (see the relevant [Draft TODO item](#draft-todo) for context) * **Explore High Level Load Interfaces**: See [this discussion](#discuss-on_loaded-high-level-interface) for one prototype. * **Asset Streaming**: It would be great if we could stream Assets (ex: stream a long video file piece by piece) * **ID Exchanging**: In this PR Asset Handles/AssetIds are bigger than they need to be because they have a Uuid enum variant. If we implement an "id exchanging" system that trades Uuids for "efficient runtime ids", we can cut down on the size of AssetIds, making them more efficient. This has some open design questions, such as how to spawn entities with "default" handle values (as these wouldn't have access to the exchange api in the current system). * **Asset Path Fixup Tooling**: Assets that inline asset paths inside them will break when an asset moves. The asset system provides the functionality to detect when paths break. We should build a framework that enables formats to define "path migrations". This is especially important for scene files. For editor-generated files, we should also consider using UUIDs (see other bullet point) to avoid the need to migrate in these cases. --------- Co-authored-by: BeastLe9enD <beastle9end@outlook.de> Co-authored-by: Mike <mike.hsu@gmail.com> Co-authored-by: Nicola Papale <nicopap@users.noreply.github.com> |
||
Nicola Papale
|
afcb1fee90
|
Cleanup some bevy_text pipeline.rs (#9111)
## Objective
- `bevy_text/src/pipeline.rs` had some crufty code.
## Solution
Remove the cruft.
- `&mut self` argument was unused by
`TextPipeline::create_text_measure`, so we replace it with a constructor
`TextMeasureInfo::from_text`.
- We also pass a `&Text` to `from_text` since there is no reason to
split the struct before passing it as argument.
- from_text also checks beforehand that every Font exist in the
Assets<Font>. This allows rust to skip the drop code on the Vecs we
create in the method, since there is no early exit.
- We also remove the scaled_fonts field on `TextMeasureInfo`. This
avoids an additional allocation. We can re-use the font on `fonts`
instead in `compute_size`. Building a `ScaledFont` seems fairly cheap,
when looking at the ab_glyph internals.
- We also implement ToSectionText on TextMeasureSection, this let us
skip creating a whole new Vec each time we call compute_size.
- This let us remove compute_size_from_section_text, since its only
purpose was to not have to allocate the Vec we just made redundant.
- Make some immutabe `Vec<T>` into `Box<[T]>` and `String` into
`Box<str>`
- `{min,max}_width_content_size` fields of `TextMeasureInfo` have name
`width` in them, yet the contain information on both width and height.
- `TextMeasureInfo::linebreak_behaviour` -> `linebreak_behavior`
## Migration Guide
- The `ResMut<TextPipeline>` argument to `measure_text_system` doesn't
exist anymore. If you were calling this system manually, you should
remove the argument.
- The `{min,max}_width_content_size` fields of `TextMeasureInfo` are
renamed to `min` and `max` respectively
- Other changes to `TextMeasureInfo` may also break your code if you
were manually building it. Please consider using the new
`TextMeasureInfo::from_text` to build one instead.
- `TextPipeline::create_text_measure` has been removed in favor of
`TextMeasureInfo::from_text`
|
||
|
ickshonpe
|
c7ca7dd225
|
Fix for vertical text bounds and alignment (#9133)
# Objective
In both Text2d and Bevy UI text because of incorrect text size and
alignment calculations if a block of text has empty leading lines then
those lines are ignored. Also, depending on the font size when leading
empty lines are ignored the same number of lines of text can go missing
from the bottom of the text block.
## Example (from murtaugh on discord)
```rust
use bevy::prelude::*;
fn main() {
App::new()
.add_plugins(DefaultPlugins)
.add_systems(Startup, setup)
.run();
}
fn setup(mut commands: Commands) {
commands.spawn(Camera2dBundle::default());
let text = "\nfirst line\nsecond line\nthird line\n";
commands.spawn(TextBundle {
text: Text::from_section(
text.to_string(),
TextStyle {
font_size: 60.0,
color: Color::YELLOW,
..Default::default()
},
),
style: Style {
position_type: PositionType::Absolute,
..Default::default()
},
background_color: BackgroundColor(Color::RED),
..Default::default()
});
}
```
## Solution
`TextPipeline::queue_text`,
`TextMeasureInfo::compute_size_from_section_texts` and
`GlyphBrush::process_glyphs` each have a nearly duplicate section of
code that calculates the minimum bounds around a list of text sections.
The first two functions don't apply any rounding, but `process_glyphs`
also floors all the values. It seems like this difference can cause
conflicts where the text gets incorrectly shaped.
Also when Bevy computes the text bounds it chooses the smallest possible
rect that fits all the glyphs, ignoring white space. The glyphs are then
realigned vertically so the first glyph is on the top line. Any empty
leading lines are missed.
This PR adds a function `compute_text_bounds` that replaces the
duplicate code, so the text bounds are rounded the same way by each
function. Also, since Bevy doesn't use `ab_glyph` to control vertical
alignment, the minimum y bound is just always set to 0 which ensures no
leading empty lines will be missed.
There is another problem in that trailing empty lines are also ignored,
but that's more difficult to deal with and much less important than the
other issues, so I'll leave it for another PR.
<img width="462" alt="fixed_text_align_bounds"
src="https://github.com/bevyengine/bevy/assets/27962798/85e32e2c-d68f-4677-8e87-38e27ade4487">
---
## Changelog
Added a new function `compute_text_bounds` to the `glyph_brush` module
that replaces the text size and bounds calculations in
`TextPipeline::queue_text`,
`TextMeasureInfo::compute_size_from_section_texts` and
`GlyphBrush::process_glyphs`. The text bounds are calculated identically
in each function and the minimum y bound is not derived from the glyphs
but is always set to 0.
|
||
|
ickshonpe
|
ffc62c1a81
|
text_system split (#7779)
# Objective `text_system` runs before the UI layout is calculated and the size of the text node is determined, so it cannot correctly shape the text to fit the layout, and has no way of determining if the text needs to be wrapped. The function `text_constraint` attempts to determine the size of the node from the local size constraints in the `Style` component. It can't be made to work, you have to compute the whole layout to get the correct size. A simple example of where this fails completely is a text node set to stretch to fill the empty space adjacent to a node with size constraints set to `Val::Percent(50.)`. The text node will take up half the space, even though its size constraints are `Val::Auto` Also because the `text_system` queries for changes to the `Style` component, when a style value is changed that doesn't affect the node's geometry the text is recomputed unnecessarily. Querying on changes to `Node` is not much better. The UI layout is changed to fit the `CalculatedSize` of the text, so the size of the node is changed and so the text and UI layout get recalculated multiple times from a single change to a `Text`. Also, the `MeasureFunc` doesn't work at all, it doesn't have enough information to fit the text correctly and makes no attempt. Fixes #7663, #6717, #5834, #1490, ## Solution Split the `text_system` into two functions: * `measure_text_system` which calculates the size constraints for the text node and runs before `UiSystem::Flex` * `text_system` which runs after `UiSystem::Flex` and generates the actual text. * Fix the `MeasureFunc` calculations. --- Text wrapping in main: <img width="961" alt="Capturemain" src="https://user-images.githubusercontent.com/27962798/220425740-4fe4bf46-24fb-4685-a1cf-bc01e139e72d.PNG"> With this PR: <img width="961" alt="captured_wrap" src="https://user-images.githubusercontent.com/27962798/220425807-949996b0-f127-4637-9f33-56a6da944fb0.PNG"> ## Changelog * Removed the previous fields from `CalculatedSize`. `CalculatedSize` now contains a boxed `Measure`. * Added `measurement` module to `bevy_ui`. * Added the method `create_text_measure` to `TextPipeline`. * Added a new system `measure_text_system` that runs before `UiSystem::Flex` that creates a `MeasureFunc` for the text. * Rescheduled `text_system` to run after `UiSystem::Flex`. * Added a trait `Measure`. A `Measure` is used to compute the size of a UI node when the size of that node is based on its content. * Added `ImageMeasure` and `TextMeasure` which implement `Measure`. * Added a new component `UiImageSize` which is used by `update_image_calculated_size_system` to track image size changes. * Added a `UiImageSize` component to `ImageBundle`. ## Migration Guide `ImageBundle` has a new component `UiImageSize` which contains the size of the image bundle's texture and is updated automatically by `update_image_calculated_size_system` --------- Co-authored-by: François <mockersf@gmail.com> |
||
Mikkel Rasmussen
|
1575481429
|
Changed spelling linebreak_behaviour to linebreak_behavior (#8285)
# Objective
In the
[`Text`](
|
||
Molot2032
|
cef56a0d47 |
Allow users of Text/TextBundle to choose from glyph_brush_layout's BuiltInLineBreaker options. (#7283)
# Objective Currently, Text always uses the default linebreaking behaviour in glyph_brush_layout `BuiltInLineBreaker::Unicode` which breaks lines at word boundaries. However, glyph_brush_layout also supports breaking lines at any character by setting the linebreaker to `BuiltInLineBreaker::AnyChar`. Having text wrap character-by-character instead of at word boundaries is desirable in some cases - consider that consoles/terminals usually wrap this way. As a side note, the default Unicode linebreaker does not seem to handle emergency cases, where there is no word boundary on a line to break at. In that case, the text runs out of bounds. Issue #1867 shows an example of this. ## Solution Basically just copies how TextAlignment is exposed, but for a new enum TextLineBreakBehaviour. This PR exposes glyph_brush_layout's two simple linebreaking options (Unicode, AnyChar) to users of Text via the enum TextLineBreakBehaviour (which just translates those 2 aforementioned options), plus a method 'with_linebreak_behaviour' on Text and TextBundle. ## Changelog Added `Text::with_linebreak_behaviour` Added `TextBundle::with_linebreak_behaviour` `TextPipeline::queue_text` and `GlyphBrush::compute_glyphs` now need a TextLineBreakBehaviour argument, in order to pass through the new field. Modified the `text2d` example to show both linebreaking behaviours. ## Example Here's what the modified example looks like  |
||
Rob Parrett
|
d1528dfbf8 |
Warn instead of erroring when max_font_atlases is exceeded (#6673)
# Objective Fixes #6642 In a way that doesn't create any breaking changes, as a possible way to fix the above in a patch release. ## Solution Don't actually remove font atlases when `max_font_atlases` is exceeded. Add a warning instead. Keep `TextError::ExceedMaxTextAtlases` and `TextSettings` as-is so we don't break anything. This is a bit of a cop-out, but the problems revealed by #6642 seem very challenging to fix properly. Maybe follow up later with something more like https://github.com/rparrett/bevy/commits/remove-max-font-atlases later, if this is the direction we want to go. ## Note See previous attempt at a "simple fix" that only solved some of the issues: #6666 |
||
Michel van der Hulst
|
0981789ec7 |
Fixes incorrect glyph positioning for text2d (#6273)
# Objective Fixes #6272 ## Solution Revert to old way of positioning text for Text2D rendered text. Co-authored-by: Michel van der Hulst <hulstmichel@gmail.com> |
||
|
François
|
f00212fd48 |
make Handle::<T> field id private, and replace with a getter (#6176)
# Objective - Field `id` of `Handle<T>` is public: https://docs.rs/bevy/latest/bevy/asset/struct.Handle.html#structfield.id - Changing the value of this field doesn't make sense as it could mean changing the previous handle without dropping it, breaking asset cleanup detection for the old handle and the new one ## Solution - Make the field private, and add a public getter Opened after discussion in #6171. Pinging @zicklag --- ## Migration Guide - If you were accessing the value `handle.id`, you can now do so with `handle.id()` |
||
xtr3m3nerd
|
b6efe0f318 |
Limit FontAtlasSets (#5708)
# Objective Fixes #5636 Summary: The FontAtlasSet caches generated font textures per font size. Since font size can be any arbitrary floating point number it is possible for the user to generate thousands of font texture inadvertently by changing the font size over time. This results in a memory leak as these generated font textures fill the available memory. ## Solution We limit the number of possible font sizes that we will cache and throw an error if the user attempts to generate more. This error encourages the user to use alternative, less performance intensive methods to accomplish the same goal. If the user requires more font sizes and the alternative solutions wont work there is now a TextSettings Resource that the user can set to configure this limit. --- ## Changelog The number of cached font sizes per font is now limited with a default limit of 100 font sizes per font. This limit is configurable via the new TextSettings struct. |
||
Al M
|
bd68ba1c3c |
make TextLayoutInfo a Component (#4460)
# Objective Make `TextLayoutInfo` more accessible as a component, rather than internal to `TextPipeline`. I am working on a plugin that manipulates these and there is no (mutable) access to them right now. ## Solution This changes `TextPipeline::queue_text` to return `TextLayoutInfo`'s rather than storing them in a map internally. `text2d_system` and `text_system` now take the returned `TextLayoutInfo` and store it as a component of the entity. I considered adding an accessor to `TextPipeline` (e.g. `get_glyphs_mut`) but this seems like it might be a little faster, and also has the added benefit of cleaning itself up when entities are removed. Right now nothing is ever removed from the glyphs map. ## Changelog Removed `DefaultTextPipeline`. `TextPipeline` no longer has a generic key type. `TextPipeline::queue_text` returns `TextLayoutInfo` directly. ## Migration Guide This might break a third-party crate? I could restore the orginal TextPipeline API as a wrapper around what's in this PR. |
||
ira
|
992681b59b |
Make Resource trait opt-in, requiring #[derive(Resource)] V2 (#5577)
*This PR description is an edited copy of #5007, written by @alice-i-cecile.* # Objective Follow-up to https://github.com/bevyengine/bevy/pull/2254. The `Resource` trait currently has a blanket implementation for all types that meet its bounds. While ergonomic, this results in several drawbacks: * it is possible to make confusing, silent mistakes such as inserting a function pointer (Foo) rather than a value (Foo::Bar) as a resource * it is challenging to discover if a type is intended to be used as a resource * we cannot later add customization options (see the [RFC](https://github.com/bevyengine/rfcs/blob/main/rfcs/27-derive-component.md) for the equivalent choice for Component). * dependencies can use the same Rust type as a resource in invisibly conflicting ways * raw Rust types used as resources cannot preserve privacy appropriately, as anyone able to access that type can read and write to internal values * we cannot capture a definitive list of possible resources to display to users in an editor ## Notes to reviewers * Review this commit-by-commit; there's effectively no back-tracking and there's a lot of churn in some of these commits. *ira: My commits are not as well organized :')* * I've relaxed the bound on Local to Send + Sync + 'static: I don't think these concerns apply there, so this can keep things simple. Storing e.g. a u32 in a Local is fine, because there's a variable name attached explaining what it does. * I think this is a bad place for the Resource trait to live, but I've left it in place to make reviewing easier. IMO that's best tackled with https://github.com/bevyengine/bevy/issues/4981. ## Changelog `Resource` is no longer automatically implemented for all matching types. Instead, use the new `#[derive(Resource)]` macro. ## Migration Guide Add `#[derive(Resource)]` to all types you are using as a resource. If you are using a third party type as a resource, wrap it in a tuple struct to bypass orphan rules. Consider deriving `Deref` and `DerefMut` to improve ergonomics. `ClearColor` no longer implements `Component`. Using `ClearColor` as a component in 0.8 did nothing. Use the `ClearColorConfig` in the `Camera3d` and `Camera2d` components instead. Co-authored-by: Alice <alice.i.cecile@gmail.com> Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> Co-authored-by: devil-ira <justthecooldude@gmail.com> Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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CGMossa
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33f9b3940d |
Updated glam to 0.21. (#5142)
Removed `const_vec2`/`const_vec3` and replaced with equivalent `.from_array`. # Objective Fixes #5112 ## Solution - `encase` needs to update to `glam` as well. See teoxoy/encase#4 on progress on that. - `hexasphere` also needs to be updated, see OptimisticPeach/hexasphere#12. |
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Daniel McNab
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1bbd5c25c0 |
Enforce type safe usage of Handle::get (#4794)
# Objective - Sometimes, people might load an asset as one type, then use it with an `Asset`s for a different type. - See e.g. #4784. - This is especially likely with the Gltf types, since users may not have a clear conceptual model of what types the assets will be. - We had an instance of this ourselves, in the `scene_viewer` example ## Solution - Make `Assets::get` require a type safe handle. --- ## Changelog ### Changed - `Assets::<T>::get` and `Assets::<T>::get_mut` now require that the passed handles are `Handle<T>`, improving the type safety of handles. ### Added - `HandleUntyped::typed_weak`, a helper function for creating a weak typed version of an exisitng `HandleUntyped`. ## Migration Guide `Assets::<T>::get` and `Assets::<T>::get_mut` now require that the passed handles are `Handle<T>`, improving the type safety of handles. If you were previously passing in: - a `HandleId`, use `&Handle::weak(id)` instead, to create a weak handle. You may have been able to store a type safe `Handle` instead. - a `HandleUntyped`, use `&handle_untyped.typed_weak()` to create a weak handle of the specified type. This is most likely to be the useful when using [load_folder](https://docs.rs/bevy_asset/latest/bevy_asset/struct.AssetServer.html#method.load_folder) - a `Handle<U>` of of a different type, consider whether this is the correct handle type to store. If it is (i.e. the same handle id is used for multiple different Asset types) use `Handle::weak(handle.id)` to cast to a different type. |
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KDecay
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7a7f097485 |
Move Size to bevy_ui (#4285)
# Objective - Related #4276. - Part of the splitting process of #3503. ## Solution - Move `Size` to `bevy_ui`. ## Reasons - `Size` is only needed in `bevy_ui` (because it needs to use `Val` instead of `f32`), but it's also used as a worse `Vec2` replacement in other areas. - `Vec2` is more powerful than `Size` so it should be used whenever possible. - Discussion in #3503. ## Changelog ### Changed - The `Size` type got moved from `bevy_math` to `bevy_ui`. ## Migration Guide - The `Size` type got moved from `bevy::math` to `bevy::ui`. To migrate you just have to import `bevy::ui::Size` instead of `bevy::math::Math` or use the `bevy::prelude` instead. Co-authored-by: KDecay <KDecayMusic@protonmail.com> |
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danieleades
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d8974e7c3d |
small and mostly pointless refactoring (#2934)
What is says on the tin. This has got more to do with making `clippy` slightly more *quiet* than it does with changing anything that might greatly impact readability or performance. that said, deriving `Default` for a couple of structs is a nice easy win |
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Carter Anderson
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ffecb05a0a |
Replace old renderer with new renderer (#3312)
This makes the [New Bevy Renderer](#2535) the default (and only) renderer. The new renderer isn't _quite_ ready for the final release yet, but I want as many people as possible to start testing it so we can identify bugs and address feedback prior to release. The examples are all ported over and operational with a few exceptions: * I removed a good portion of the examples in the `shader` folder. We still have some work to do in order to make these examples possible / ergonomic / worthwhile: #3120 and "high level shader material plugins" are the big ones. This is a temporary measure. * Temporarily removed the multiple_windows example: doing this properly in the new renderer will require the upcoming "render targets" changes. Same goes for the render_to_texture example. * Removed z_sort_debug: entity visibility sort info is no longer available in app logic. we could do this on the "render app" side, but i dont consider it a priority. |
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tigregalis
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40b5bbd028
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Rich text (#1245)
Rich text support (different fonts / styles within the same text section) |
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Olivier Pinon
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465c3d4f7b
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Use glyph_brush_layout and add text alignment support (#765)
Use glyph_brush_layout and add text alignment support Co-authored-by: Olivier Pinon <op@impero.com> Co-authored-by: tigregalis <anak.harimau@gmail.com> Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
