flutter · nrbnlulu · Mar 4, 2025 · Mar 4, 2025 · Mar 5, 2025 · Apr 27, 2025
diff --git a/.gitignore b/.gitignore
@@ -23,7 +23,7 @@
 .classpath
 .project
 .settings/
-.vscode/*
+**/.vscode/*
 .ccls-cache
 
 # This file, on the master branch, should never exist or be checked-in.

diff --git a/engine/src/flutter/shell/platform/windows/client_wrapper/include/flutter/flutter_view.h b/engine/src/flutter/shell/platform/windows/client_wrapper/include/flutter/flutter_view.h
@@ -32,6 +32,10 @@ class FlutterView {
     return FlutterDesktopViewGetGraphicsAdapter(view_);
   }
 
+  FlutterID3D11DeviceRef GetID3D11Device() {
+    return FlutterDesktopPluginViewGetID3D11Device(view_);
+  }
+
  private:
   // Handle for interacting with the C API's view.
   FlutterDesktopViewRef view_ = nullptr;

diff --git a/engine/src/flutter/shell/platform/windows/flutter_windows.cc b/engine/src/flutter/shell/platform/windows/flutter_windows.cc
@@ -269,6 +269,21 @@ IDXGIAdapter* FlutterDesktopViewGetGraphicsAdapter(FlutterDesktopViewRef view) {
   return nullptr;
 }
 
+FlutterID3D11DeviceRef FlutterDesktopPluginViewGetID3D11Device(
+    FlutterDesktopViewRef view) {
+  auto egl_manager = ViewFromHandle(view)->GetEngine()->egl_manager();
+  if (egl_manager) {
+    Microsoft::WRL::ComPtr<ID3D11Device> d3d_device;
+    if (egl_manager->GetDevice(d3d_device.GetAddressOf())) {
+      // Since we pass this to C we can't use smart pointers.
+      // The user should not use the pointer for the device when flutter
+      // disposes the engine.
+      return reinterpret_cast<FlutterID3D11DeviceRef>(d3d_device.Get());
+    }
+  }
+  return nullptr;
+}
+
 bool FlutterDesktopEngineProcessExternalWindowMessage(
     FlutterDesktopEngineRef engine,
     HWND hwnd,

diff --git a/engine/src/flutter/shell/platform/windows/public/flutter_windows.h b/engine/src/flutter/shell/platform/windows/public/flutter_windows.h
@@ -28,6 +28,10 @@ typedef struct FlutterDesktopViewController* FlutterDesktopViewControllerRef;
 struct FlutterDesktopView;
 typedef struct FlutterDesktopView* FlutterDesktopViewRef;
 
+// Opaque reference to a Flutter's ID3D11Device.
+struct FlutterID3D11Device;
+typedef struct FlutterID3D11Device* FlutterID3D11DeviceRef;
+
 // Opaque reference to a Flutter engine instance.
 struct FlutterDesktopEngine;
 typedef struct FlutterDesktopEngine* FlutterDesktopEngineRef;
@@ -245,6 +249,10 @@ FLUTTER_EXPORT HWND FlutterDesktopViewGetHWND(FlutterDesktopViewRef view);
 FLUTTER_EXPORT IDXGIAdapter* FlutterDesktopViewGetGraphicsAdapter(
     FlutterDesktopViewRef view);
 
+// Returns the ID3D11Device used for rendering or nullptr in case of error.
+FLUTTER_EXPORT FlutterID3D11DeviceRef FlutterDesktopPluginViewGetID3D11Device(
+    FlutterDesktopViewRef view);
+
 // Called to pass an external window message to the engine for lifecycle
 // state updates. Non-Flutter windows must call this method in their WndProc
 // in order to be included in the logic for application lifecycle state