migrations/egui
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Add a dummy warm-up frame to the demo app to pre-cache emojis

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This commit is contained in:
Emil Ernerfeldt
2021-01-02 14:42:43 +01:00
parent 4202c4b6a9
commit 14a96ca5d0
14 changed files with 144 additions and 55 deletions
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50
egui_glium/src/backend.rs
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@@ -90,6 +90,18 @@ fn create_storage(app_name: &str) -> Option<Box<dyn epi::Storage>> {
}
}
fn integration_info(
display: &glium::Display,
previous_frame_time: Option<f32>,
) -> epi::IntegrationInfo {
epi::IntegrationInfo {
web_info: None,
cpu_usage: previous_frame_time,
seconds_since_midnight: Some(seconds_since_midnight()),
native_pixels_per_point: Some(native_pixels_per_point(&display)),
}
}
/// Run an egui app
pub fn run(mut app: Box<dyn epi::App>) -> ! {
let mut storage = create_storage(app.name());
@@ -113,6 +125,7 @@ pub fn run(mut app: Box<dyn epi::App>) -> ! {
.as_mut()
.and_then(|storage| epi::get_value(storage.as_ref(), EGUI_MEMORY_KEY))
.unwrap_or_default();
app.setup(&ctx);
let mut input_state = GliumInputState::from_pixels_per_point(native_pixels_per_point(&display));
@@ -126,6 +139,36 @@ pub fn run(mut app: Box<dyn epi::App>) -> ! {
let http = std::sync::Arc::new(crate::http::GliumHttp {});
if app.warm_up_enabled() {
// let warm_up_start = Instant::now();
input_state.raw.time = Some(0.0);
input_state.raw.screen_rect = Some(Rect::from_min_size(
Default::default(),
screen_size_in_pixels(&display) / input_state.raw.pixels_per_point.unwrap(),
));
ctx.begin_frame(input_state.raw.take());
let mut app_output = epi::backend::AppOutput::default();
let mut frame = epi::backend::FrameBuilder {
info: integration_info(&display, None),
tex_allocator: Some(&mut painter),
http: http.clone(),
output: &mut app_output,
repaint_signal: repaint_signal.clone(),
}
.build();
let saved_memory = ctx.memory().clone();
ctx.memory().set_everything_is_visible(true);
app.update(&ctx, &mut frame);
*ctx.memory() = saved_memory; // We don't want to remember that windows were huge.
ctx.clear_animations();
let (egui_output, _paint_commands) = ctx.end_frame();
handle_output(egui_output, &display, clipboard.as_mut());
// TODO: handle app_output
// eprintln!("Warmed up in {} ms", warm_up_start.elapsed().as_millis())
}
event_loop.run(move |event, _, control_flow| {
let mut redraw = || {
let frame_start = Instant::now();
@@ -138,12 +181,7 @@ pub fn run(mut app: Box<dyn epi::App>) -> ! {
ctx.begin_frame(input_state.raw.take());
let mut app_output = epi::backend::AppOutput::default();
let mut frame = epi::backend::FrameBuilder {
info: epi::IntegrationInfo {
web_info: None,
cpu_usage: previous_frame_time,
seconds_since_midnight: Some(seconds_since_midnight()),
native_pixels_per_point: Some(native_pixels_per_point(&display)),
},
info: integration_info(&display, previous_frame_time),
tex_allocator: Some(&mut painter),
http: http.clone(),
output: &mut app_output,