改善性能

SpineViewer/ViewModels/MainWindow/MainWindowViewModel.cs

@@ -31,6 +31,21 @@ namespace SpineViewer.ViewModels.MainWindow
 
         public string Title => $"SpineViewer - v{App.Version}";
 
+        public Visibility Visibility
+        {
+            get => _visibility;
+            set
+            {
+                if (SetProperty(ref _visibility, value))
+                {
+                    OnPropertyChanged(nameof(IsVisible));
+                }
+            }
+        }
+        private Visibility _visibility = Visibility.Visible;
+
+        public bool IsVisible => _visibility == Visibility.Visible;
+
         /// <summary>
         /// 指示是否通过托盘图标进行退出
         /// </summary>

SpineViewer/ViewModels/MainWindow/SFMLRendererViewModel.cs

@@ -484,21 +484,17 @@ namespace SpineViewer.ViewModels.MainWindow
                         _forwardDelta = 0;
                     }
 
-                    using var v = _renderer.GetView();
-                    _renderer.Clear(_backgroundColor);
+                    using var view = _renderer.GetView();
+                    _wallpaperRenderer.SetView(view);
 
-                    if (_wallpaperView)
-                    {
-                        _wallpaperRenderer.SetView(v);
-                        _wallpaperRenderer.Clear(_backgroundColor);
-                    }
+                    if (_vmMain.IsVisible) _renderer.Clear(_backgroundColor);
+                    if (_wallpaperView) _wallpaperRenderer.Clear(_backgroundColor);
 
                     // 渲染背景
                     lock (_bgLock)
                     {
                         if (_backgroundImageSprite is not null)
                         {
-                            using var view = _renderer.GetView();
                             var bg = _backgroundImageSprite;
                             var viewSize = view.Size;
                             var bgSize = bg.Texture.Size;
@@ -521,16 +517,13 @@ namespace SpineViewer.ViewModels.MainWindow
                             bg.Scale = new(signX * scaleX, signY * scaleY);
                             bg.Position = view.Center;
                             bg.Rotation = view.Rotation;
-                            _renderer.Draw(bg);
 
-                            if (_wallpaperView)
-                            {
-                                _wallpaperRenderer.Draw(bg);
-                            }
+                            if (_vmMain.IsVisible) _renderer.Draw(bg);
+                            if (_wallpaperView) _wallpaperRenderer.Draw(bg);
                         }
                     }
 
-                    if (_showAxis)
+                    if (_showAxis && _vmMain.IsVisible)
                     {
                         // 画一个很长的坐标轴, 用 1e9 比较合适
                         _axisVertices[0] = new(new(-1e9f, 0), _axisColor);
@@ -551,6 +544,8 @@ namespace SpineViewer.ViewModels.MainWindow
                             sp.Update(0); // 避免物理效果出现问题
                             sp.Update(delta * _speed);
 
+                            if (_vmMain.IsVisible)
+                            {
                                 // 为选中对象绘制一个半透明背景
                                 if (sp.IsSelected)
                                 {
@@ -566,20 +561,13 @@ namespace SpineViewer.ViewModels.MainWindow
                                 sp.EnableDebug = true;
                                 _renderer.Draw(sp);
                                 sp.EnableDebug = false;
-
-                            if (_wallpaperView)
-                            {
-                                _wallpaperRenderer.Draw(sp);
                             }
+                            if (_wallpaperView) _wallpaperRenderer.Draw(sp);
                         }
                     }
 
-                    _renderer.Display();
-
-                    if (_wallpaperView)
-                    {
-                        _wallpaperRenderer.Display();
-                    }
+                    if (_vmMain.IsVisible) _renderer.Display();
+                    if (_wallpaperView) _wallpaperRenderer.Display();
                 }
             }
             catch (Exception ex)

SpineViewer/Views/MainWindow.xaml

@@ -15,6 +15,7 @@
         Height="720"
         Background="{DynamicResource RegionBrush}"
         WindowStartupLocation="CenterScreen"
+        Visibility="{Binding Visibility, Mode=OneWayToSource}"
         PreviewKeyDown="MainWindow_PreviewKeyDown"
         LocationChanged="MainWindow_LocationChanged"
         SizeChanged="MainWindow_SizeChanged">