Add opt-in support for the 'puffin' profiler in eframe

Cargo.toml

@@ -12,6 +12,8 @@ members = [
     "emath",
     "epaint",
     "epi",
+
+    "examples/puffin_profiler",
 ]
 
 [profile.dev]

eframe/CHANGELOG.md

@@ -22,6 +22,7 @@ NOTE: [`egui_web`](../egui_web/CHANGELOG.md), [`egui-winit`](../egui-winit/CHANG
 * `dark-light` (dark mode detection) is now an opt-in feature ([#1437](https://github.com/emilk/egui/pull/1437)).
 * Fixed potential scale bug when DPI scaling changes (e.g. when dragging a  window between different displays) ([#1441](https://github.com/emilk/egui/pull/1441)).
 * MSRV (Minimum Supported Rust Version) is now `1.60.0` ([#1467](https://github.com/emilk/egui/pull/1467)).
+* Added new feature `puffin` to add [`puffin profiler`](https://github.com/EmbarkStudios/puffin) scopes ([#1483](https://github.com/emilk/egui/pull/1483)).
 
 
 ## 0.17.0 - 2022-02-22

eframe/Cargo.toml

@@ -37,6 +37,11 @@ persistence = [
   "epi/persistence",
 ]
 
+# Enable profiling with the puffin crate: https://github.com/EmbarkStudios/puffin
+# Only enabled on native, because of the low resolution (1ms) of time keeping in browsers.
+# eframe will call `puffin::GlobalProfiler::lock().new_frame()` for you
+puffin = ["egui_glow/puffin"]
+
 # enable screen reader support (requires `ctx.options().screen_reader = true;`)
 screen_reader = [
   "egui-winit/screen_reader",
@@ -74,5 +79,7 @@ image = { version = "0.24", default-features = false, features = [
   "png",
 ] }
 poll-promise = "0.1"
+puffin = "0.13"
+puffin_http = "0.10"
 rfd = "0.8"
 three-d = { version = "0.11", default-features = false }

eframe/README.md

@@ -8,9 +8,10 @@
 
 `eframe` is the official framework library for writing apps using [`egui`](https://github.com/emilk/egui). The app can be compiled both to run natively (cross platform) or be compiled to a web app (using WASM).
 
-To get started, go to <https://github.com/emilk/eframe_template/> and follow the instructions there!
+To get started, see the [crate examples](https://github.com/emilk/egui/tree/master/examples) and [single-file examples](https://github.com/emilk/egui/tree/master/eframe/examples).
+To learn how to set up `eframe` for web and native, go to <https://github.com/emilk/eframe_template/> and follow the instructions there!
 
-You can also take a look at [the `eframe` examples folder](https://github.com/emilk/egui/tree/master/eframe/examples). There is also an excellent tutorial video at <https://www.youtube.com/watch?v=NtUkr_z7l84>.
+There is also a tutorial video at <https://www.youtube.com/watch?v=NtUkr_z7l84>.
 
 For how to use `egui`, see [the egui docs](https://docs.rs/egui).
 
@@ -37,6 +38,7 @@ Not all rust crates work when compiled to WASM, but here are some useful crates
 * Audio: [`cpal`](https://github.com/RustAudio/cpal).
 * HTTP client: [`ehttp`](https://github.com/emilk/ehttp).
 * Time: [`chrono`](https://github.com/chronotope/chrono).
+* WebSockets: [`ewebsock`](https://github.com/rerun-io/ewebsock).
 
 
 ## Name

eframe/src/lib.rs

@@ -4,9 +4,8 @@
 //! and are happy with just using egui for all visuals,
 //! Then `eframe` is for you!
 //!
-//! To get started, look at <https://github.com/emilk/eframe_template>.
-//!
-//! You can also take a look at [the `eframe` examples folder](https://github.com/emilk/egui/tree/master/eframe/examples).
+//! To get started, see the [crate examples](https://github.com/emilk/egui/tree/master/examples) and [single-file examples](https://github.com/emilk/egui/tree/master/eframe/examples).
+//! To learn how to set up `eframe` for web and native, go to <https://github.com/emilk/eframe_template/> and follow the instructions there!
 //!
 //! You write your application code for [`epi`] (implementing [`epi::App`]) and then
 //! call from [`crate::run_native`] your `main.rs`, and/or call `eframe::start_web` from your `lib.rs`.

egui-winit/CHANGELOG.md

@@ -7,6 +7,7 @@ All notable changes to the `egui-winit` integration will be noted in this file.
 * Renamed the feature `convert_bytemuck` to `bytemuck` ([#1467](https://github.com/emilk/egui/pull/1467)).
 * Renamed the feature `serialize` to `serde` ([#1467](https://github.com/emilk/egui/pull/1467)).
 * MSRV (Minimum Supported Rust Version) is now `1.60.0` ([#1467](https://github.com/emilk/egui/pull/1467)).
+* Added new feature `puffin` to add [`puffin profiler`](https://github.com/EmbarkStudios/puffin) scopes ([#1483](https://github.com/emilk/egui/pull/1483)).
 
 
 ## 0.17.0 - 2022-02-22

egui-winit/Cargo.toml

@@ -36,6 +36,9 @@ epi_backend = ["epi", "glow"]
 # enable opening links in a browser when an egui hyperlink is clicked.
 links = ["webbrowser"]
 
+# Enable profiling with the puffin crate: https://github.com/EmbarkStudios/puffin
+puffin = ["dep:puffin"]
+
 # experimental support for a screen reader
 screen_reader = ["tts"]
 
@@ -57,6 +60,7 @@ epi = { version = "0.17.0", path = "../epi", optional = true }
 arboard = { version = "2.1", optional = true, default-features = false }
 dark-light = { version = "0.2.1", optional = true }
 glow = { version = "0.11", optional = true }
+puffin = { version = "0.13", optional = true }
 serde = { version = "1.0", optional = true, features = ["derive"] }
 webbrowser = { version = "0.6", optional = true }
 

egui-winit/src/epi.rs

@@ -191,6 +191,7 @@ impl EpiIntegration {
     }
 
     pub fn warm_up(&mut self, app: &mut dyn epi::App, window: &winit::window::Window) {
+        crate::profile_function!();
         let saved_memory: egui::Memory = self.egui_ctx.memory().clone();
         self.egui_ctx.memory().set_everything_is_visible(true);
         let full_output = self.update(app, window);
@@ -230,6 +231,7 @@ impl EpiIntegration {
 
         let raw_input = self.egui_winit.take_egui_input(window);
         let full_output = self.egui_ctx.run(raw_input, |egui_ctx| {
+            crate::profile_scope!("App::update");
             app.update(egui_ctx, &mut self.frame);
         });
         self.pending_full_output.append(full_output);
@@ -274,17 +276,26 @@ impl EpiIntegration {
     pub fn save(&mut self, _app: &mut dyn epi::App, _window: &winit::window::Window) {
         #[cfg(feature = "persistence")]
         if let Some(storage) = self.frame.storage_mut() {
+            crate::profile_function!();
+
             if _app.persist_native_window() {
+                crate::profile_scope!("native_window");
                 epi::set_value(
                     storage,
                     STORAGE_WINDOW_KEY,
                     &crate::WindowSettings::from_display(_window),
                 );
             }
             if _app.persist_egui_memory() {
+                crate::profile_scope!("egui_memory");
                 epi::set_value(storage, STORAGE_EGUI_MEMORY_KEY, &*self.egui_ctx.memory());
             }
-            _app.save(storage);
+            {
+                crate::profile_scope!("App::save");
+                _app.save(storage);
+            }
+
+            crate::profile_scope!("Storage::flush");
             storage.flush();
         }
     }

egui-winit/src/lib.rs

@@ -646,3 +646,25 @@ fn translate_cursor(cursor_icon: egui::CursorIcon) -> Option<winit::window::Curs
         egui::CursorIcon::ZoomOut => Some(winit::window::CursorIcon::ZoomOut),
     }
 }
+
+// ---------------------------------------------------------------------------
+
+/// Profiling macro for feature "puffin"
+#[doc(hidden)]
+#[macro_export]
+macro_rules! profile_function {
+    ($($arg: tt)*) => {
+        #[cfg(feature = "puffin")]
+        puffin::profile_function!($($arg)*);
+    };
+}
+
+/// Profiling macro for feature "puffin"
+#[doc(hidden)]
+#[macro_export]
+macro_rules! profile_scope {
+    ($($arg: tt)*) => {
+        #[cfg(feature = "puffin")]
+        puffin::profile_scope!($($arg)*);
+    };
+}

egui/examples/README.md

@@ -2,4 +2,5 @@ There are no stand-alone egui examples, because egui is not stand-alone!
 
 There are plenty of examples in [the online demo](https://www.egui.rs/#demo). You can find the source code for it at <https://github.com/emilk/egui/tree/master/egui_demo_lib>.
 
-If you are using `eframe`, check out [the `eframe` examples](https://github.com/emilk/egui/tree/master/eframe/examples) and [the `eframe` template repository](https://github.com/emilk/eframe_template/).
+If you are using `eframe`, the [crate examples](https://github.com/emilk/egui/tree/master/examples) and [single-file examples](https://github.com/emilk/egui/tree/master/eframe/examples).
+To learn how to set up `eframe` for web and native, go to <https://github.com/emilk/eframe_template/> and follow the instructions there!

egui_glow/CHANGELOG.md

@@ -9,6 +9,7 @@ All notable changes to the `egui_glow` integration will be noted in this file.
 * Fixed potential scale bug when DPI scaling changes (e.g. when dragging a  window between different displays) ([#1441](https://github.com/emilk/egui/pull/1441)).
 * MSRV (Minimum Supported Rust Version) is now `1.60.0` ([#1467](https://github.com/emilk/egui/pull/1467)).
 * `clipboard`, `links`, `persistence`, `winit` are now all opt-in features ([#1467](https://github.com/emilk/egui/pull/1467)).
+* Added new feature `puffin` to add [`puffin profiler`](https://github.com/EmbarkStudios/puffin) scopes ([#1483](https://github.com/emilk/egui/pull/1483)).
 
 
 ## 0.17.0 - 2022-02-22

egui_glow/Cargo.toml

@@ -47,6 +47,9 @@ persistence = [
   "epi?/persistence",
 ]
 
+# Enable profiling with the puffin crate: https://github.com/EmbarkStudios/puffin
+puffin = ["dep:puffin", "egui-winit?/puffin"]
+
 # experimental support for a screen reader
 screen_reader = ["egui-winit?/screen_reader"]
 
@@ -72,6 +75,7 @@ egui-winit = { version = "0.17.0", path = "../egui-winit", optional = true, defa
   "epi_backend",
 ] }
 glutin = { version = "0.28.0", optional = true }
+puffin = { version = "0.13", optional = true }
 
 # Web:
 [target.'cfg(target_arch = "wasm32")'.dependencies]