Run render at redraw requested

hakolao · Jan 22, 2024 · b1c1f36 · b1c1f36
1 parent 469166a
commit b1c1f36
Showing 1 changed file with 33 additions and 20 deletions.
diff --git a/src/glass.rs b/src/glass.rs
@@ -56,12 +56,14 @@ impl Glass {
             if !event_loop.exiting() {
                 self.app.input(&mut context, event_loop, &event);
             }
+            let mut end_of_frame = false;
             match event {
                 Event::WindowEvent {
                     window_id,
                     event: window_event,
                     ..
                 } => {
+                    let mut redraw = false;
                     if let Some(window) = context.windows.get_mut(&window_id) {
                         match window_event {
                             WindowEvent::Resized(physical_size) => {
@@ -104,27 +106,15 @@ impl Glass {
                                 request_window_close = true;
                                 remove_windows.push(window_id);
                             }
+                            WindowEvent::RedrawRequested => {
+                                redraw = true;
+                                end_of_frame = true;
+                            }
                             _ => (),
                         }
                     }
-                }
-                Event::AboutToWait => {
-                    if !event_loop.exiting() {
-                        self.app.update(&mut context);
-                        // Close window(s)
-                        if request_window_close || context.exit {
-                            for window in remove_windows.iter() {
-                                context.windows.remove(window);
-                            }
-                            remove_windows.clear();
-                            request_window_close = false;
-                            // Exit
-                            if context.windows.is_empty() || context.exit {
-                                event_loop.exit();
-                            }
-                        }
-                        // Render
-                        for (_, window) in context.windows.iter() {
+                    if redraw {
+                        if let Some(window) = context.windows.get(&window_id) {
                             match window.surface().get_current_texture() {
                                 Ok(frame) => {
                                     let mut encoder = context
@@ -158,10 +148,30 @@ impl Glass {
                                     }
                                 }
                             }
+                        }
+                    }
+                }
+                Event::AboutToWait => {
+                    if !event_loop.exiting() {
+                        self.app.update(&mut context);
+
+                        // Redraw
+                        for (_, window) in context.windows.iter() {
                             window.window().request_redraw();
                         }
-                        // End of frame
-                        self.app.end_of_frame(&mut context);
+
+                        // Close window(s)
+                        if request_window_close || context.exit {
+                            for window in remove_windows.iter() {
+                                context.windows.remove(window);
+                            }
+                            remove_windows.clear();
+                            request_window_close = false;
+                            // Exit
+                            if context.windows.is_empty() || context.exit {
+                                event_loop.exit();
+                            }
+                        }
                     }
                 }
                 Event::LoopExiting => {
@@ -170,6 +180,9 @@ impl Glass {
                 }
                 _ => {}
             }
+            if end_of_frame {
+                self.app.end_of_frame(&mut context);
+            }
         }) {
             Err(e) => Err(GlassError::EventLoopError(e)),
             Ok(a) => Ok(a),