adding defensive check to ensure device context is valid before D2D operations (#15620)

* adding defensive check to ensure device contetxt is valid before performing D2D operation

* Change files

Author: protikbiswas100

change/react-native-windows-964662e9-977d-470e-b110-b559a7f1f545.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "adding defensive check to ensure device contetxt is valid before performing D2D operation",
+  "packageName": "react-native-windows",
+  "email": "protikbiswas@microsoft.com",
+  "dependentChangeType": "patch"
+}

vnext/Microsoft.ReactNative.Cxx/AutoDraw.h

@@ -16,7 +16,10 @@ class AutoDrawDrawingSurface {
       POINT *offset) noexcept {
     drawingSurface.as(m_drawingSurfaceInterop);
     auto dpi = scaleFactor * 96.0f;
-    m_drawingSurfaceInterop->BeginDraw(m_d2dDeviceContext.put(), dpi, dpi, offset);
+    auto hr = m_drawingSurfaceInterop->BeginDraw(m_d2dDeviceContext.put(), dpi, dpi, offset);
+    if (FAILED(hr)) {
+      m_d2dDeviceContext = nullptr;
+    }
   }
 
   ~AutoDrawDrawingSurface() noexcept {
@@ -34,6 +37,11 @@ class AutoDrawDrawingSurface {
     return m_d2dDeviceContext.get();
   }
 
+  // Returns true if the device context is valid and safe to use for drawing operations
+  bool IsValid() const noexcept {
+    return m_d2dDeviceContext != nullptr;
+  }
+
  private:
   winrt::com_ptr<Experimental::ICompositionDrawingSurfaceInterop> m_drawingSurfaceInterop;
   winrt::com_ptr<ID2D1DeviceContext> m_d2dDeviceContext;

vnext/Microsoft.ReactNative/Fabric/Composition/UriImageManager.cpp

@@ -104,6 +104,11 @@ struct SvgDataImageHandler
             ::Microsoft::ReactNative::Composition::AutoDrawDrawingSurface autoDraw(drawingBrush, 1.0, &pt);
             auto renderTarget = autoDraw.GetRenderTarget();
 
+            // Defensive check: ensure device context is valid before D2D operations
+            if (!renderTarget) {
+              return nullptr;
+            }
+
             winrt::com_ptr<ID2D1DeviceContext5> deviceContext5;
             winrt::check_hresult(renderTarget->QueryInterface(IID_ID2D1DeviceContext5, deviceContext5.put_void()));