same shit- windows

shell/windows/LayersShell/MainWindow.xaml.cs

@@ -2,14 +2,12 @@ using System;
 using System.IO;
 using System.Runtime.InteropServices;
 using Microsoft.UI;
-using Microsoft.UI.Composition.SystemBackdrops;
 using Microsoft.UI.Windowing;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Input;
 using Microsoft.UI.Xaml.Media;
 using Windows.Graphics;
-using Windows.Foundation;
 using WinRT.Interop;
 
 namespace LayersShell;
@@ -17,8 +15,6 @@ namespace LayersShell;
 public sealed partial class MainWindow : Window
 {
     private IntPtr _handle = IntPtr.Zero;
-    private MicaController? _mica;
-    private SystemBackdropConfiguration? _backdropConfig;
     private IntPtr _hwnd = IntPtr.Zero;
 
     private const double DefaultLogicalWidth = 480;
@@ -36,7 +32,6 @@ public sealed partial class MainWindow : Window
         var appWindow = AppWindow.GetFromWindowId(Win32Interop.GetWindowIdFromWindow(_hwnd));
         if (appWindow is not null)
         {
-            // Borderless chrome + topmost + default size.
             appWindow.SetPresenter(AppWindowPresenterKind.Overlapped);
             if (appWindow.Presenter is OverlappedPresenter op)
             {
@@ -49,7 +44,8 @@ public sealed partial class MainWindow : Window
             appWindow.ResizeClient(new SizeInt32((int)DefaultLogicalWidth, (int)DefaultLogicalHeight));
         }
 
-        SetupMica();
+        // Windows App SDK 1.3+: assign a backdrop directly, no MicaController wiring needed.
+        SystemBackdrop = new MicaBackdrop { Kind = Microsoft.UI.Composition.SystemBackdrops.MicaKind.Base };
 
         Activated += OnActivated;
         Closed += OnClosed;
@@ -63,39 +59,16 @@ public sealed partial class MainWindow : Window
         });
     }
 
-    private void SetupMica()
-    {
-        if (!MicaController.IsSupported())
-        {
-            return;
-        }
-        _backdropConfig = new SystemBackdropConfiguration
-        {
-            IsInputActive = true,
-            Theme = SystemBackdropTheme.Dark,
-        };
-        _mica = new MicaController
-        {
-            Kind = MicaKind.Base,
-        };
-        _mica.AddSystemBackdropTarget(this.As<Microsoft.UI.Composition.ICompositionSupportsSystemBackdrop>());
-        _mica.SetSystemBackdropConfiguration(_backdropConfig);
-    }
-
     private void OnActivated(object sender, WindowActivatedEventArgs e)
     {
         _isFocused = e.WindowActivationState != WindowActivationState.Deactivated;
-        if (_backdropConfig is not null)
-        {
-            _backdropConfig.IsInputActive = _isFocused;
-        }
         ApplyFade();
     }
 
     private void OnClosed(object sender, WindowEventArgs args)
     {
-        _mica?.Dispose();
-        _mica = null;
+        _renderTimer?.Stop();
+        _renderTimer = null;
         if (_handle != IntPtr.Zero)
         {
             LayersNative.layers_destroy(_handle);
@@ -105,7 +78,6 @@ public sealed partial class MainWindow : Window
 
     private void PointToRust()
     {
-        // Resolve <plugin_root> from the shell exe's parent/parent path: ...\bin\Layers.exe
         var exe = System.Reflection.Assembly.GetEntryAssembly()?.Location;
         if (string.IsNullOrEmpty(exe)) return;
         var binDir = Path.GetDirectoryName(exe) ?? string.Empty;
@@ -122,22 +94,28 @@ public sealed partial class MainWindow : Window
         var height = (float)RenderSurface.ActualHeight;
         if (width <= 0 || height <= 0 || scale <= 0) return;
 
-        var native = RenderSurface.As<ISwapChainPanelNative>();
-        var panelPtr = Marshal.GetIUnknownForObject(RenderSurface);
+        // wgpu's dx12 backend wants an ISwapChainPanelNative*. Query it off the XAML element's
+        // IUnknown rather than passing the raw WinRT object pointer.
+        var iid = typeof(ISwapChainPanelNative).GUID;
+        var unknown = Marshal.GetIUnknownForObject(RenderSurface);
+        IntPtr native = IntPtr.Zero;
         try
         {
-            _handle = LayersNative.layers_create_from_swap_chain_panel(panelPtr, width, height, scale);
+            int hr = Marshal.QueryInterface(unknown, in iid, out native);
+            if (hr < 0 || native == IntPtr.Zero) return;
+            _handle = LayersNative.layers_create_from_swap_chain_panel(native, width, height, scale);
         }
         finally
         {
-            Marshal.Release(panelPtr);
+            if (native != IntPtr.Zero) Marshal.Release(native);
+            Marshal.Release(unknown);
         }
     }
 
-    private Microsoft.UI.Xaml.DispatcherTimer? _renderTimer;
+    private DispatcherTimer? _renderTimer;
     private void StartRenderLoop()
     {
-        _renderTimer = new Microsoft.UI.Xaml.DispatcherTimer
+        _renderTimer = new DispatcherTimer
         {
             Interval = TimeSpan.FromMilliseconds(1000.0 / 60.0),
         };
@@ -153,12 +131,10 @@ public sealed partial class MainWindow : Window
 
     private void ApplyFade()
     {
-        // Swift-shell parity: focused+hovered = 1.0, focused xor hovered = 0.5, neither = 0.1.
         double target = (_isFocused && _isHovered) ? 1.0
             : (_isFocused || _isHovered) ? 0.5
             : 0.1;
-        var root = Content as FrameworkElement;
-        if (root is not null)
+        if (Content is FrameworkElement root)
         {
             root.Opacity = target;
         }
@@ -212,7 +188,6 @@ public sealed partial class MainWindow : Window
     {
         if (_handle == IntPtr.Zero) return;
         var p = e.GetCurrentPoint(RenderSurface);
-        // Wheel delta in Windows is multiples of 120 per notch; convert to pixel-ish deltas.
         var dy = (float)p.Properties.MouseWheelDelta / 3.0f;
         LayersNative.layers_mouse_scroll(_handle, (float)p.Position.X, (float)p.Position.Y, 0.0f, dy);
     }