temp

Cargo.lock

@@ -12344,18 +12344,18 @@ dependencies = [
 
 [[package]]
 name = "profiling"
-version = "1.0.16"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afbdc74edc00b6f6a218ca6a5364d6226a259d4b8ea1af4a0ea063f27e179f4d"
+checksum = "3eb8486b569e12e2c32ad3e204dbaba5e4b5b216e9367044f25f1dba42341773"
 dependencies = [
  "profiling-procmacros",
 ]
 
 [[package]]
 name = "profiling-procmacros"
-version = "1.0.16"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a65f2e60fbf1063868558d69c6beacf412dc755f9fc020f514b7955fc914fe30"
+checksum = "52717f9a02b6965224f95ca2a81e2e0c5c43baacd28ca057577988930b6c3d5b"
 dependencies = [
  "quote",
  "syn 2.0.101",

Cargo.toml

@@ -537,7 +537,7 @@ portable-pty = "0.9.0"
 postage = { version = "0.5", features = ["futures-traits"] }
 pretty_assertions = { version = "1.3.0", features = ["unstable"] }
 proc-macro2 = "1.0.93"
-profiling = "1"
+profiling = "1.0.17"
 prost = "0.9"
 prost-build = "0.9"
 prost-types = "0.9"

crates/gpui/src/platform/windows/directx_renderer.rs

@@ -286,6 +286,7 @@ impl DirectXRenderer {
         Ok(())
     }
 
+    #[profiling::function]
     pub(crate) fn draw(&mut self, scene: &Scene) -> Result<()> {
         self.pre_draw()?;
         for batch in scene.batches() {

crates/gpui/src/platform/windows/events.rs

@@ -238,6 +238,7 @@ fn handle_timer_msg(
     }
 }
 
+#[profiling::function]
 fn handle_paint_msg(handle: HWND, state_ptr: Rc<WindowsWindowStatePtr>) -> Option<isize> {
     draw_window(handle, false, state_ptr)
 }
@@ -373,6 +374,7 @@ fn handle_syskeyup_msg(
 
 // It's a known bug that you can't trigger `ctrl-shift-0`. See:
 // https://superuser.com/questions/1455762/ctrl-shift-number-key-combination-has-stopped-working-for-a-few-numbers
+#[profiling::function]
 fn handle_keydown_msg(
     handle: HWND,
     wparam: WPARAM,
@@ -1302,6 +1304,7 @@ fn translate_message(handle: HWND, wparam: WPARAM, lparam: LPARAM) {
     unsafe { TranslateMessage(&msg).ok().log_err() };
 }
 
+#[profiling::function]
 fn handle_key_event<F>(
     handle: HWND,
     wparam: WPARAM,

crates/gpui/src/platform/windows/platform.rs

@@ -14,19 +14,20 @@ use itertools::Itertools;
 use parking_lot::RwLock;
 use smallvec::SmallVec;
 use windows::{
-    UI::ViewManagement::UISettings,
+    core::*, Win32::{
-    Win32::{
         Foundation::*,
         Graphics::{
             DirectComposition::DCompositionWaitForCompositorClock,
+            Dxgi::{
+                CreateDXGIFactory2, IDXGIAdapter1, IDXGIFactory6, IDXGIOutput, DXGI_CREATE_FACTORY_FLAGS, DXGI_GPU_PREFERENCE_MINIMUM_POWER
+            },
             Gdi::*,
             Imaging::{CLSID_WICImagingFactory, IWICImagingFactory},
         },
         Security::Credentials::*,
         System::{Com::*, LibraryLoader::*, Ole::*, SystemInformation::*, Threading::*},
         UI::{Input::KeyboardAndMouse::*, Shell::*, WindowsAndMessaging::*},
-    },
+    }, UI::ViewManagement::UISettings
-    core::*,
 };
 
 use crate::*;
@@ -132,9 +133,11 @@ impl WindowsPlatform {
     fn begin_vsync_thread(&self) {
         let raw_window_handles = self.raw_window_handles.clone();
         std::thread::spawn(move || {
+            let vsync_provider = VSyncProvider::new();
             loop {
                 unsafe {
-                    DCompositionWaitForCompositorClock(None, INFINITE);
+                    // DCompositionWaitForCompositorClock(None, INFINITE);
+                    vsync_provider.wait_for_vsync();
                     for handle in raw_window_handles.read().iter() {
                         RedrawWindow(Some(**handle), None, None, RDW_INVALIDATE)
                             .ok()
@@ -743,6 +746,46 @@ pub(crate) struct WindowCreationInfo {
     pub(crate) main_thread_id_win32: u32,
 }
 
+struct VSyncProvider {
+    dxgi_output: IDXGIOutput,
+}
+
+impl VSyncProvider {
+    fn new() -> Self {
+        let dxgi_factory: IDXGIFactory6 =
+            unsafe { CreateDXGIFactory2(DXGI_CREATE_FACTORY_FLAGS::default()) }.unwrap();
+        let adapter: IDXGIAdapter1 = get_adapter(&dxgi_factory);
+        unsafe {
+            let dxgi_output = adapter.EnumOutputs(0).unwrap();
+            Self { dxgi_output }
+        }
+    }
+
+    fn wait_for_vsync(&self) {
+        unsafe {
+            self.dxgi_output.WaitForVBlank().unwrap();
+        }
+    }
+}
+
+fn get_adapter(dxgi_factory: &IDXGIFactory6) -> IDXGIAdapter1 {
+    unsafe {
+        for index in 0.. {
+            let adapter = dxgi_factory
+                .EnumAdapterByGpuPreference(index, DXGI_GPU_PREFERENCE_MINIMUM_POWER)
+                .unwrap();
+            return adapter;
+        }
+    }
+    unreachable!("No DXGI adapter found")
+}
+
+impl Default for VSyncProvider {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 fn open_target(target: &str) {
     unsafe {
         let ret = ShellExecuteW(