Call pre_present_notify before presenting (#8089)

crates/eframe/src/native/wgpu_integration.rs

@@ -722,6 +722,7 @@ impl WgpuWinitRunning<'_> {
                 &clipped_primitives,
                 &textures_delta,
                 screenshot_commands,
+                window,
             );
 
             for action in viewport.actions_requested.drain(..) {
@@ -1111,6 +1112,7 @@ fn render_immediate_viewport(
         &clipped_primitives,
         &textures_delta,
         vec![],
+        window,
     );
 
     egui_winit.handle_platform_output(window, platform_output);

crates/egui-wgpu/src/winit.rs

@@ -411,6 +411,7 @@ impl Painter {
     /// and the captures captured screenshot if it was requested.
     ///
     /// If `capture_data` isn't empty, a screenshot will be captured.
+    #[expect(clippy::too_many_arguments)]
     pub fn paint_and_update_textures(
         &mut self,
         viewport_id: ViewportId,
@@ -419,6 +420,7 @@ impl Painter {
         clipped_primitives: &[epaint::ClippedPrimitive],
         textures_delta: &epaint::textures::TexturesDelta,
         capture_data: Vec<UserData>,
+        window: &winit::window::Window,
     ) -> f32 {
         profiling::function_scope!();
 
@@ -654,6 +656,8 @@ impl Painter {
             );
         }
 
+        window.pre_present_notify();
+
         {
             profiling::scope!("present");
             // wgpu doesn't document where vsync can happen. Maybe here?