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More even text kerning (#7431)

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Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
This commit is contained in:
valadaptive
2025-09-08 11:29:41 -04:00
committed by GitHub
parent e5d0b93633
commit d5b0a6f446
162 changed files with 1203 additions and 1131 deletions
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30
crates/egui_demo_lib/benches/benchmark.rs
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@@ -165,14 +165,12 @@ pub fn criterion_benchmark(c: &mut Criterion) {
let wrap_width = 512.0;
let font_id = egui::FontId::default();
let text_color = egui::Color32::WHITE;
let fonts = egui::epaint::text::Fonts::new(
pixels_per_point,
let mut fonts = egui::epaint::text::Fonts::new(
max_texture_side,
egui::epaint::AlphaFromCoverage::default(),
egui::FontDefinitions::default(),
);
{
let mut locked_fonts = fonts.lock();
c.bench_function("text_layout_uncached", |b| {
b.iter(|| {
use egui::epaint::text::{LayoutJob, layout};
@@ -183,13 +181,13 @@ pub fn criterion_benchmark(c: &mut Criterion) {
text_color,
wrap_width,
);
layout(&mut locked_fonts.fonts, job.into())
layout(&mut fonts.fonts, pixels_per_point, job.into())
});
});
}
c.bench_function("text_layout_cached", |b| {
b.iter(|| {
fonts.layout(
fonts.with_pixels_per_point(pixels_per_point).layout(
LOREM_IPSUM_LONG.to_owned(),
font_id.clone(),
text_color,
@@ -211,24 +209,30 @@ pub fn criterion_benchmark(c: &mut Criterion) {
let mut rng = rand::rng();
b.iter(|| {
fonts.begin_pass(
pixels_per_point,
max_texture_side,
egui::epaint::AlphaFromCoverage::default(),
);
fonts.begin_pass(max_texture_side, egui::epaint::AlphaFromCoverage::default());
// Delete a random character, simulating a user making an edit in a long file:
let mut new_string = string.clone();
let idx = rng.random_range(0..string.len());
new_string.remove(idx);
fonts.layout(new_string, font_id.clone(), text_color, wrap_width);
fonts.with_pixels_per_point(pixels_per_point).layout(
new_string,
font_id.clone(),
text_color,
wrap_width,
);
});
});
let galley = fonts.layout(LOREM_IPSUM_LONG.to_owned(), font_id, text_color, wrap_width);
let galley = fonts.with_pixels_per_point(pixels_per_point).layout(
LOREM_IPSUM_LONG.to_owned(),
font_id,
text_color,
wrap_width,
);
let font_image_size = fonts.font_image_size();
let prepared_discs = fonts.texture_atlas().lock().prepared_discs();
let prepared_discs = fonts.texture_atlas().prepared_discs();
let mut tessellator = egui::epaint::Tessellator::new(
1.0,
Default::default(),