use criterion::{criterion_group, criterion_main, Criterion}; use egui_demo_lib::LOREM_IPSUM_LONG; pub fn criterion_benchmark(c: &mut Criterion) { let raw_input = egui::RawInput::default(); { let mut ctx = egui::CtxRef::default(); let mut demo_windows = egui_demo_lib::DemoWindows::default(); // The most end-to-end benchmark. c.bench_function("demo_with_tesselate__realistic", |b| { b.iter(|| { ctx.begin_frame(raw_input.clone()); demo_windows.ui(&ctx); let (_, shapes) = ctx.end_frame(); ctx.tessellate(shapes) }) }); c.bench_function("demo_no_tesselate", |b| { b.iter(|| { ctx.begin_frame(raw_input.clone()); demo_windows.ui(&ctx); ctx.end_frame() }) }); ctx.begin_frame(raw_input.clone()); demo_windows.ui(&ctx); let (_, shapes) = ctx.end_frame(); c.bench_function("demo_only_tessellate", |b| { b.iter(|| ctx.tessellate(shapes.clone())) }); } if false { let mut ctx = egui::CtxRef::default(); ctx.memory().set_everything_is_visible(true); // give us everything let mut demo_windows = egui_demo_lib::DemoWindows::default(); c.bench_function("demo_full_no_tesselate", |b| { b.iter(|| { ctx.begin_frame(raw_input.clone()); demo_windows.ui(&ctx); ctx.end_frame() }) }); } { let mut ctx = egui::CtxRef::default(); ctx.begin_frame(raw_input); let mut ui = egui::Ui::__test(); c.bench_function("label &str", |b| { b.iter(|| { ui.label("the quick brown fox jumps over the lazy dog"); }) }); c.bench_function("label format!", |b| { b.iter(|| { ui.label("the quick brown fox jumps over the lazy dog".to_owned()); }) }); } { let pixels_per_point = 1.0; let wrap_width = 512.0; let text_style = egui::TextStyle::Body; let fonts = egui::epaint::text::Fonts::from_definitions( pixels_per_point, egui::FontDefinitions::default(), ); let font = &fonts[text_style]; c.bench_function("text_layout_uncached", |b| { b.iter(|| font.layout_multiline(LOREM_IPSUM_LONG.to_owned(), wrap_width)) }); c.bench_function("text_layout_cached", |b| { b.iter(|| fonts.layout_multiline(text_style, LOREM_IPSUM_LONG.to_owned(), wrap_width)) }); let galley = font.layout_multiline(LOREM_IPSUM_LONG.to_owned(), wrap_width); let mut tessellator = egui::epaint::Tessellator::from_options(Default::default()); let mut mesh = egui::epaint::Mesh::default(); c.bench_function("tessellate_text", |b| { b.iter(|| { let fake_italics = false; tessellator.tessellate_text( fonts.texture().size(), egui::Pos2::ZERO, &galley, egui::Color32::WHITE, fake_italics, &mut mesh, ); mesh.clear(); }) }); } } criterion_group!(benches, criterion_benchmark); criterion_main!(benches);