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Text pipeline benchmark (#7845)
# Objective Simple text pipeline benchmark. It's quite expensive but current examples don't capture the performance of `queue_text` as it only runs on changes to the text.
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12
Cargo.toml
12
Cargo.toml
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@ -1420,7 +1420,6 @@ description = "A shader that uses the various textures generated by the prepass"
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category = "Shaders"
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wasm = false
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[[example]]
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name = "shader_material_screenspace_texture"
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path = "examples/shader/shader_material_screenspace_texture.rs"
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@ -1584,6 +1583,16 @@ description = "Various test cases for hierarchy and transform propagation perfor
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category = "Stress Tests"
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wasm = true
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[[example]]
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name = "text_pipeline"
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path = "examples/stress_tests/text_pipeline.rs"
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[package.metadata.example.text_pipeline]
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name = "Text Pipeline"
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description = "Text Pipeline benchmark"
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category = "Stress Tests"
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wasm = false
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# Tools
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[[example]]
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name = "scene_viewer"
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@ -1726,7 +1735,6 @@ description = "Demonstrates how the AlignItems and JustifyContent properties can
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category = "UI (User Interface)"
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wasm = false
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[[example]]
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name = "transparency_ui"
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path = "examples/ui/transparency_ui.rs"
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@ -301,6 +301,7 @@ Example | Description
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[Many Foxes](../examples/stress_tests/many_foxes.rs) | Loads an animated fox model and spawns lots of them. Good for testing skinned mesh performance. Takes an unsigned integer argument for the number of foxes to spawn. Defaults to 1000
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[Many Lights](../examples/stress_tests/many_lights.rs) | Simple benchmark to test rendering many point lights. Run with `WGPU_SETTINGS_PRIO=webgl2` to restrict to uniform buffers and max 256 lights
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[Many Sprites](../examples/stress_tests/many_sprites.rs) | Displays many sprites in a grid arrangement! Used for performance testing. Use `--colored` to enable color tinted sprites.
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[Text Pipeline](../examples/stress_tests/text_pipeline.rs) | Text Pipeline benchmark
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[Transform Hierarchy](../examples/stress_tests/transform_hierarchy.rs) | Various test cases for hierarchy and transform propagation performance
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## Tools
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68
examples/stress_tests/text_pipeline.rs
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68
examples/stress_tests/text_pipeline.rs
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@ -0,0 +1,68 @@
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//! Text pipeline benchmark.
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//!
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//! Continuously recomputes a large `Text` component with 100 sections.
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use bevy::{
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diagnostic::{FrameTimeDiagnosticsPlugin, LogDiagnosticsPlugin},
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prelude::*,
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text::{BreakLineOn, Text2dBounds},
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window::{PresentMode, WindowPlugin},
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};
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins.set(WindowPlugin {
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primary_window: Some(Window {
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present_mode: PresentMode::Immediate,
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..default()
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}),
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..default()
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}))
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.add_plugin(FrameTimeDiagnosticsPlugin::default())
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.add_plugin(LogDiagnosticsPlugin::default())
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.add_startup_system(spawn)
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.add_system(update_text_bounds)
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.run();
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}
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fn spawn(mut commands: Commands, asset_server: Res<AssetServer>) {
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commands.spawn(Camera2dBundle::default());
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let sections = (1..=50)
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.flat_map(|i| {
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[
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TextSection {
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value: "text".repeat(i),
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style: TextStyle {
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font: asset_server.load("fonts/FiraMono-Medium.ttf"),
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font_size: (4 + i % 10) as f32,
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color: Color::BLUE,
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},
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},
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TextSection {
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value: "pipeline".repeat(i),
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style: TextStyle {
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font: asset_server.load("fonts/FiraSans-Bold.ttf"),
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font_size: (4 + i % 11) as f32,
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color: Color::YELLOW,
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},
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},
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]
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})
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.collect::<Vec<_>>();
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commands.spawn(Text2dBundle {
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text: Text {
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sections,
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alignment: TextAlignment::Center,
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linebreak_behaviour: BreakLineOn::AnyCharacter,
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},
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..Default::default()
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});
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}
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// changing the bounds of the text will cause a recomputation
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fn update_text_bounds(time: Res<Time>, mut text_bounds_query: Query<&mut Text2dBounds>) {
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let width = (1. + time.elapsed_seconds().sin()) * 600.0;
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for mut text_bounds in text_bounds_query.iter_mut() {
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text_bounds.size.x = width;
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}
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}
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