FDK24/メディア/デバイスリソース.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Diagnostics;
   4 using System.Linq;
   5
   6 namespace FDK.メディア
   7 {
   8         public class デバイスリソース
   9         {
  10                 public SharpDX.Size2F 設計画面サイズdpx = new SharpDX.Size2F( 1920f, 1080f );    // 設計サイズ。
  11                 public SharpDX.Size2F 物理画面サイズpx = new SharpDX.Size2F( 0, 0 );   // (0, 0) は、サイズ依存リソース無効の印。
  12                 public IntPtr ウィンドウハンドル = IntPtr.Zero;
  13                 public float 視野角deg { get; set; } = 45f;
  14                 public SharpDX.Matrix ビュー変換行列
  15                 {
  16                         get
  17                         {
  18                                 var カメラの位置 = new SharpDX.Vector3( 0f, 0f, ( -2f * this.dz( this.設計画面サイズdpx.Height, this.視野角deg ) ) );
  19                                 var カメラの注視点 = new SharpDX.Vector3( 0f, 0f, 0f );
  20                                 var カメラの上方向 = new SharpDX.Vector3( 0f, 1f, 0f );
  21                                 var mat = SharpDX.Matrix.LookAtLH( カメラの位置, カメラの注視点, カメラの上方向 );
  22                                 mat.Transpose();  // 転置
  23                                 return mat;
  24                         }
  25                 }
  26                 public SharpDX.Matrix 射影変換行列
  27                 {
  28                         get
  29                         {
  30                                 float dz = this.dz( this.設計画面サイズdpx.Height, this.視野角deg );
  31                                 var mat = SharpDX.Matrix.PerspectiveFovLH(
  32                                         SharpDX.MathUtil.DegreesToRadians( 視野角deg ),
  33                                         設計画面サイズdpx.Width / 設計画面サイズdpx.Height,  // アスペクト比
  34                                         -dz,  // 前方投影面までの距離
  35                                         dz ); // 後方投影面までの距離
  36                                 mat.Transpose();  // 転置
  37                                 return mat;
  38                         }
  39                 }
  40                 public SharpDX.MediaFoundation.DXGIDeviceManager DXGIDeviceManager => this.bs_DXGIDeviceManager;
  41                 public SharpDX.DXGI.SwapChain SwapChain => this.bs_SwapChain;
  42                 public SharpDX.Direct3D11.RenderTargetView D3DRenderTargetView => this.bs_D3DRenderTargetView;
  43                 public SharpDX.Mathematics.Interop.RawViewportF[] D3DViewPort => this.bs_D3DViewPort;
  44                 public SharpDX.Direct3D11.Texture2D D3DDepthStencil => this.bs_D3DDepthStencil;
  45                 public SharpDX.Direct3D11.DepthStencilView D3DDepthStencilView => this.bs_D3DDepthStencilView;
  46                 public SharpDX.Direct3D11.DepthStencilState D3DDepthStencilState => this.bs_D3DDepthStencilState;
  47                 public SharpDX.Direct2D1.Factory2 D2DFactory2 => this.bs_D2DFactory2;
  48                 public SharpDX.DirectWrite.Factory DWriteFactory => this.bs_DWriteFactory;
  49                 public SharpDX.WIC.ImagingFactory2 WicImagingFactory2 => this.bs_WicImagingFactory2;
  50                 public SharpDX.Direct2D1.Device1 D2DDevice1 => this.bs_D2DDevice1;
  51                 public SharpDX.Direct2D1.DeviceContext1 D2DContext1 => this.bs_D2DContext1;
  52                 public SharpDX.Direct2D1.Bitmap1 D2DRenderTargetBitmap => this.bs_D2DRenderTargetBitmap;
  53
  54                 public float 拡大率DPXtoPX横方法 => ( this.物理画面サイズpx.Width / this.設計画面サイズdpx.Width );
  55                 public float 拡大率DPXtoPX縦方向 => ( this.物理画面サイズpx.Height / this.設計画面サイズdpx.Height );
  56                 public float 拡大率PXtoDPX横方法 => ( 1f / this.拡大率DPXtoPX横方法 );
  57                 public float 拡大率PXtoDPX縦方法 => ( 1f / this.拡大率DPXtoPX縦方向 );
  58                 public SharpDX.Matrix3x2 拡大行列DPXtoPX => SharpDX.Matrix3x2.Scaling( this.拡大率DPXtoPX横方法, this.拡大率DPXtoPX縦方向 );
  59                 public SharpDX.Matrix3x2 拡大行列PXtoDPX => SharpDX.Matrix3x2.Scaling( this.拡大率PXtoDPX横方法, this.拡大率PXtoDPX縦方法 );
  60                 public SharpDX.Matrix3x2 行列を単位変換するDPXtoPX( SharpDX.Matrix3x2 行列dpx ) => 行列dpx * 拡大行列DPXtoPX;
  61                 public SharpDX.Matrix3x2 行列を単位変換するPXtoDPX( SharpDX.Matrix3x2 行列px ) => 行列px * 拡大行列PXtoDPX;
  62
  63                 public void すべてのリソースを作成する( System.Drawing.Size バックバッファサイズ, IntPtr ウィンドウハンドル )
  64                 {
  65                         this.物理画面サイズpx = new SharpDX.Size2F( バックバッファサイズ.Width, バックバッファサイズ.Height );
  66                         this.ウィンドウハンドル = ウィンドウハンドル;
  67
  68                         this.すべてのリソースを作成する();
  69                 }
  70                 protected void すべてのリソースを作成する()
  71                 {
  72                         // これらが呼び出し前に設定されていること。
  73                         Debug.Assert( ( 0f < this.物理画面サイズpx.Width ) && ( 0f < this.物理画面サイズpx.Height ) );
  74                         Debug.Assert( IntPtr.Zero != this.ウィンドウハンドル );
  75
  76                         #region " D2DFactory2 を作成する。"
  77                         //-----------------
  78                         {
  79                                 var デバッグレベル = SharpDX.Direct2D1.DebugLevel.None;
  80 #if DEBUG
  81                                 // プロジェクトがデバッグビルドに含まれている場合は、Direct2D デバッグレイヤーを SDK レイヤーを介して有効にする。
  82                                 デバッグレベル = SharpDX.Direct2D1.DebugLevel.Information;
  83 #endif
  84                                 this.bs_D2DFactory2 = new SharpDX.Direct2D1.Factory2(
  85                                         SharpDX.Direct2D1.FactoryType.SingleThreaded,
  86                                         デバッグレベル );
  87                         }
  88                         //-----------------
  89                         #endregion
  90                         #region " DWriteFactory を作成する。"
  91                         //-----------------
  92                         this.bs_DWriteFactory = new SharpDX.DirectWrite.Factory(
  93                                 SharpDX.DirectWrite.FactoryType.Shared );
  94                         //-----------------
  95                         #endregion
  96                         #region " WicImagingFactory2 を作成する。"
  97                         //-----------------
  98                         this.bs_WicImagingFactory2 = new SharpDX.WIC.ImagingFactory2();
  99                         //-----------------
 100                         #endregion
 101
 102                         var d3dDevice = (SharpDX.Direct3D11.Device) null;
 103
 104                         #region " DXGIDeviceManager を作成する。"
 105                         //-----------------
 106                         this.bs_DXGIDeviceManager = new SharpDX.MediaFoundation.DXGIDeviceManager();
 107                         //-----------------
 108                         #endregion
 109                         #region " D3Dデバイス、スワップチェーンを作成する。"
 110                         //----------------
 111                         // スワップチェーン desc
 112                         var swapChainDesc = new SharpDX.DXGI.SwapChainDescription() {
 113                                 BufferCount = 2,
 114                                 ModeDescription = new SharpDX.DXGI.ModeDescription() {
 115                                         Width = (int) this.物理画面サイズpx.Width,
 116                                         Height = (int) this.物理画面サイズpx.Height,
 117                                         RefreshRate = new SharpDX.DXGI.Rational( 60, 1 ),
 118                                         Format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,  // D2D をサポートするなら B8G8R8A8 で。
 119                                         Scaling = SharpDX.DXGI.DisplayModeScaling.Stretched,
 120                                         ScanlineOrdering = SharpDX.DXGI.DisplayModeScanlineOrder.Progressive,
 121                                 },
 122                                 IsWindowed = true,
 123                                 OutputHandle = ウィンドウハンドル,
 124                                 SampleDescription = new SharpDX.DXGI.SampleDescription( 1, 0 ),
 125                                 SwapEffect = SharpDX.DXGI.SwapEffect.Discard,
 126                                 Usage = SharpDX.DXGI.Usage.RenderTargetOutput,
 127                         };
 128                         // 機能レベル
 129                         var featureLevels = new SharpDX.Direct3D.FeatureLevel[] {
 130                                 SharpDX.Direct3D.FeatureLevel.Level_11_0,
 131                                 SharpDX.Direct3D.FeatureLevel.Level_10_1,
 132                                 SharpDX.Direct3D.FeatureLevel.Level_10_0,
 133                         };
 134                         // デバイスとスワップチェーンを作成する。
 135                         SharpDX.Direct3D11.Device.CreateWithSwapChain(
 136                                 SharpDX.Direct3D.DriverType.Hardware,
 137                                 SharpDX.Direct3D11.DeviceCreationFlags.BgraSupport,     // D2Dをサポートするなら必須。
 138                                 featureLevels,
 139                                 swapChainDesc,
 140                                 out d3dDevice,
 141                                 out this.bs_SwapChain );
 142
 143                         FDK.Log.Info( "D3Dデバイスとスワップチェーンを生成しました。" );
 144                         FDK.Log.Info( $"機能レベル: {d3dDevice.FeatureLevel.ToString()}" );
 145                         //----------------
 146                         #endregion
 147
 148                         using( d3dDevice )
 149                         {
 150                                 // D3D 関連
 151                                 #region " D3DDevice が ID3D11VideoDevice を実装してないならエラー。（Win8以降のPCでは実装されているはず。） "
 152                                 //-----------------
 153                                 using( var videoDevice = d3dDevice.QueryInterfaceOrNull<SharpDX.Direct3D11.VideoDevice>() )
 154                                 {
 155                                         if( null == videoDevice )
 156                                                 throw new FDKException( "Direct3D11デバイスが、ID3D11VideoDevice をサポートしていません。" );
 157                                 }
 158                                 //-----------------
 159                                 #endregion
 160                                 #region " マルチスレッドモードを ON に設定する。DXVAを使う場合は必須。"
 161                                 //-----------------
 162                                 using( var multithread = d3dDevice.QueryInterfaceOrNull<SharpDX.Direct3D.DeviceMultithread>() )
 163                                 {
 164                                         if( null == multithread )
 165                                                 throw new FDKException( "Direct3D11デバイスが、ID3D10Multithread をサポートしていません。" );
 166
 167                                         multithread.SetMultithreadProtected( true );
 168                                 }
 169                                 //-----------------
 170                                 #endregion
 171                                 #region " DXGIデバイスマネージャに D3Dデバイスを登録する。"
 172                                 //-----------------
 173                                 this.DXGIDeviceManager.ResetDevice( d3dDevice );
 174                                 //-----------------
 175                                 #endregion
 176                                 #region " すべての Windows イベントを無視する。具体的には PrintScreen と Alt+Enter 。"
 177                                 //----------------
 178                                 using( var factory = this.bs_SwapChain.GetParent<SharpDX.DXGI.Factory>() )
 179                                 {
 180                                         factory.MakeWindowAssociation( ウィンドウハンドル, SharpDX.DXGI.WindowAssociationFlags.IgnoreAll );
 181                                 }
 182                                 //----------------
 183                                 #endregion
 184                                 #region " 深度ステンシルステートを作成する。"
 185                                 //----------------
 186                                 var DepthSencil = new SharpDX.Direct3D11.DepthStencilStateDescription() {
 187                                         IsDepthEnabled = true,  // 深度テストあり
 188                                         DepthWriteMask = SharpDX.Direct3D11.DepthWriteMask.All,     // 書き込む
 189                                         DepthComparison = SharpDX.Direct3D11.Comparison.Less,   // 手前の物体を描画
 190                                         IsStencilEnabled = false,   // ステンシルテストなし。
 191                                         StencilReadMask = 0,    // ステンシル読み込みマスク。
 192                                         StencilWriteMask = 0,   // ステンシル書き込みマスク。
 193
 194                                         // 面が表を向いている場合のステンシル・テストの設定
 195                                         FrontFace = new SharpDX.Direct3D11.DepthStencilOperationDescription() {
 196                                                 FailOperation = SharpDX.Direct3D11.StencilOperation.Keep,   // 維持
 197                                                 DepthFailOperation = SharpDX.Direct3D11.StencilOperation.Keep,  // 維持
 198                                                 PassOperation = SharpDX.Direct3D11.StencilOperation.Keep,   // 維持
 199                                                 Comparison = SharpDX.Direct3D11.Comparison.Never,   // 常に失敗
 200                                         },
 201
 202                                         // 面が裏を向いている場合のステンシル・テストの設定
 203                                         BackFace = new SharpDX.Direct3D11.DepthStencilOperationDescription() {
 204                                                 FailOperation = SharpDX.Direct3D11.StencilOperation.Keep,   // 維持
 205                                                 DepthFailOperation = SharpDX.Direct3D11.StencilOperation.Keep,  // 維持
 206                                                 PassOperation = SharpDX.Direct3D11.StencilOperation.Keep,   // 維持
 207                                                 Comparison = SharpDX.Direct3D11.Comparison.Always,  // 常に成功
 208                                         },
 209                                 };
 210                                 this.bs_D3DDepthStencilState = new SharpDX.Direct3D11.DepthStencilState( d3dDevice, DepthSencil );
 211                                 //----------------
 212                                 #endregion
 213
 214                                 // D2D 関連
 215                                 #region " D2DDevice を作成する。"
 216                                 //-----------------
 217                                 using( var dxgiDevice = d3dDevice.QueryInterfaceOrNull<SharpDX.DXGI.Device>() )
 218                                 {
 219                                         if( null == dxgiDevice )
 220                                                 throw new FDKException( "Direct3D11デバイスが、IDXGIDevice3 をサポートしていません。" );
 221
 222                                         this.bs_D2DDevice1 = new SharpDX.Direct2D1.Device1( this.D2DFactory2, dxgiDevice );
 223                                 }
 224                                 //-----------------
 225                                 #endregion
 226                                 #region " D2Dの既定のコンテキスト D2DContext1 を作成する。"
 227                                 //-----------------
 228                                 this.bs_D2DContext1 = new SharpDX.Direct2D1.DeviceContext1( this.D2DDevice1, SharpDX.Direct2D1.DeviceContextOptions.None );
 229
 230                                 // 現在のディスプレイDPI を取得し、D2DContext に設定する。
 231                                 this.D2DContext1.DotsPerInch = this.D2DFactory2.DesktopDpi;
 232                                 //-----------------
 233                                 #endregion
 234                         }
 235
 236                         this.サイズに依存するリソースを作成する();
 237                 }
 238                 public void すべてのリソースを解放する()
 239                 {
 240                         FDK.Utilities.解放する( ref this.bs_WicImagingFactory2 );
 241                         FDK.Utilities.解放する( ref this.bs_DWriteFactory );
 242                         FDK.Utilities.解放する( ref this.bs_D2DFactory2 );
 243
 244                         // D2D 関連
 245                         FDK.Utilities.解放する( ref this.bs_D2DContext1 );
 246                         FDK.Utilities.解放する( ref this.bs_D2DDevice1 );
 247
 248                         // D3D 関連
 249                         var d3dDevice = (SharpDX.Direct3D11.Device) null;
 250                         using( var d3dLock = new FDK.同期.AutoD3DDeviceLock( this.DXGIDeviceManager, out d3dDevice ) )
 251                         {
 252                                 d3dDevice.ImmediateContext?.ClearState();   // デバイスステートをクリアする。
 253                         }
 254                         this.bs_SwapChain?.SetFullscreenState( fullscreen: false, targetRef: null );    // スワップチェインをウインドウモードにする。
 255                         this.サイズに依存するリソースを解放する();
 256                         FDK.Utilities.解放する( ref this.bs_D3DDepthStencilState );
 257                         FDK.Utilities.解放する( ref this.bs_SwapChain );
 258                         FDK.Utilities.解放する( ref this.bs_DXGIDeviceManager );
 259                 }
 260                 public void サイズに依存するリソースを作成する()
 261                 {
 262                         #region " スワップチェーンのサイズを変更する。"
 263                         //----------------
 264                         Debug.Assert( null != this.SwapChain ); // スワップチェーンは、デバイスとともに、すでに生成される。
 265                         this.SwapChain.ResizeBuffers(
 266                                 bufferCount: 2,
 267                                 width: (int) this.物理画面サイズpx.Width,
 268                                 height: (int) this.物理画面サイズpx.Height,
 269                                 newFormat: SharpDX.DXGI.Format.R8G8B8A8_UNorm,
 270                                 swapChainFlags: SharpDX.DXGI.SwapChainFlags.AllowModeSwitch );
 271                         //----------------
 272                         #endregion
 273
 274                         // D3D 関連
 275                         using( var backBuffer = SharpDX.Direct3D11.Texture2D.FromSwapChain<SharpDX.Direct3D11.Texture2D>( this.bs_SwapChain, 0 ) )
 276                         {
 277                                 var d3dDevice = (SharpDX.Direct3D11.Device) null;
 278                                 using( var d3dLock = new FDK.同期.AutoD3DDeviceLock( this.DXGIDeviceManager, out d3dDevice ) )
 279                                 {
 280                                         #region " RenderTargetView の作成 "
 281                                         //----------------
 282                                         this.bs_D3DRenderTargetView = new SharpDX.Direct3D11.RenderTargetView( d3dDevice, backBuffer );
 283                                         //----------------
 284                                         #endregion
 285                                         #region " 深度ステンシルテクスチャの作成 "
 286                                         //----------------
 287                                         var descDepth = backBuffer.Description;
 288                                         //descDepth.Width = backBuffer.Description.Width;       → backBuffer に同じ
 289                                         //descDepth.Height = backBuffer.Description.Height;     → 同上
 290                                         descDepth.MipLevels = 1;    // ミップマップレベル数
 291                                         descDepth.ArraySize = 1;    // 配列サイズ
 292                                         descDepth.Format = SharpDX.DXGI.Format.D32_Float;   // フォーマット（深度のみ）
 293                                         descDepth.Usage = SharpDX.Direct3D11.ResourceUsage.Default; // デフォルト使用法
 294                                         descDepth.BindFlags = SharpDX.Direct3D11.BindFlags.DepthStencil;    // 深度ステンシル
 295                                         descDepth.CpuAccessFlags = SharpDX.Direct3D11.CpuAccessFlags.None;  // CPUからはアクセスしない
 296                                         descDepth.OptionFlags = SharpDX.Direct3D11.ResourceOptionFlags.None;    // その他の設定なし
 297                                         this.bs_D3DDepthStencil = new SharpDX.Direct3D11.Texture2D( d3dDevice, descDepth );
 298                                         //----------------
 299                                         #endregion
 300                                         #region " 深度ステンシルビューの作成 "
 301                                         //----------------
 302                                         var descDSV = new SharpDX.Direct3D11.DepthStencilViewDescription() {
 303                                                 Format = descDepth.Format,
 304                                                 Dimension = SharpDX.Direct3D11.DepthStencilViewDimension.Texture2D,
 305                                                 Flags = SharpDX.Direct3D11.DepthStencilViewFlags.None,
 306                                         };
 307                                         descDSV.Texture2D.MipSlice = 0;
 308                                         this.bs_D3DDepthStencilView = new SharpDX.Direct3D11.DepthStencilView( d3dDevice, this.bs_D3DDepthStencil, descDSV );
 309                                         //----------------
 310                                         #endregion
 311                                         #region " ビューポートの設定 "
 312                                         //----------------
 313                                         this.bs_D3DViewPort[ 0 ] = new SharpDX.Mathematics.Interop.RawViewportF() {
 314                                                 X = 0.0f,
 315                                                 Y = 0.0f,
 316                                                 Width = (float) backBuffer.Description.Width,
 317                                                 Height = (float) backBuffer.Description.Height,
 318                                                 MinDepth = 0.0f,
 319                                                 MaxDepth = 1.0f,
 320                                         };
 321                                         //----------------
 322                                         #endregion
 323                                         #region " テクスチャの共有リソースの作成 "
 324                                         //----------------
 325                                         FDK.メディア.テクスチャ.共有リソースを作成する( this );
 326                                         //----------------
 327                                         #endregion
 328                                 }
 329                         }
 330
 331                         // D2D 関連
 332                         using( var backbuffer =SharpDX.DXGI.Surface.FromSwapChain( this.bs_SwapChain, 0 ) )
 333                         {
 334                                 #region " D2Dの既定のレンダーターゲットビットマップを作成する。"
 335                                 //-----------------
 336                                 var dpi = this.D2DContext1.DotsPerInch;
 337
 338                                 // DXGIスワップチェーンのバックバッファとデータを共有するD2Dターゲットビットマップを作成する。ビューではなく共有リソース。
 339                                 this.bs_D2DRenderTargetBitmap = new SharpDX.Direct2D1.Bitmap1(
 340                                         this.D2DContext1,   // このコンテキストを通じて、
 341                                         backbuffer, // バックバッファとデータを共有する。
 342                                         new SharpDX.Direct2D1.BitmapProperties1(
 343                                                 new SharpDX.Direct2D1.PixelFormat( backbuffer.Description.Format, SharpDX.Direct2D1.AlphaMode.Premultiplied ),
 344                                                 dpi.Width,
 345                                                 dpi.Height,
 346                                                 SharpDX.Direct2D1.BitmapOptions.Target | SharpDX.Direct2D1.BitmapOptions.CannotDraw ) );
 347                                 //-----------------
 348                                 #endregion
 349                                 #region " テキストのアンチエイリアシングを設定する。Grayscale が、すべての Windows ストアアプリで推奨される。"
 350                                 //-----------------
 351                                 this.D2DContext1.TextAntialiasMode = SharpDX.Direct2D1.TextAntialiasMode.Grayscale;
 352                                 //-----------------
 353                                 #endregion
 354                         }
 355
 356                 }
 357                 public void サイズに依存するリソースを解放する()
 358                 {
 359                         // D2D 関連
 360                         FDK.Utilities.解放する( ref this.bs_D2DRenderTargetBitmap );
 361
 362                         // D3D 関連
 363                         var d3dDevice = (SharpDX.Direct3D11.Device) null;
 364                         using( var d3dLock = new FDK.同期.AutoD3DDeviceLock( this.DXGIDeviceManager, out d3dDevice ) )
 365                         {
 366                                 // 描画ターゲットを解除する。
 367                                 d3dDevice.ImmediateContext.OutputMerger.ResetTargets();
 368
 369                                 FDK.メディア.テクスチャ.共有リソースを解放する();
 370                                 FDK.Utilities.解放する( ref this.bs_D3DDepthStencilView );
 371                                 FDK.Utilities.解放する( ref this.bs_D3DDepthStencil );
 372                                 FDK.Utilities.解放する( ref this.bs_D3DRenderTargetView );
 373                                 //FDK.Utilities.解放する( ref this.bs_SwapChain ); → スワップチェーンは解放しない（生成・解放はデバイスとセット）。
 374
 375                                 // (0,0)は、サイズ依存リソース無効の印。
 376                                 this.物理画面サイズpx = new SharpDX.Size2F( 0, 0 );
 377                         }
 378                 }
 379                 public void D3Dデバイスが消失していれば再構築する( out bool 異常状態なのでアプリを終了せよ )
 380                 {
 381                         var d3dDevice = (SharpDX.Direct3D11.Device) null;
 382                         using( var d3dLock = new FDK.同期.AutoD3DDeviceLock( this.DXGIDeviceManager, out d3dDevice ) )
 383                         {
 384                                 異常状態なのでアプリを終了せよ = false;
 385
 386                                 var 削除理由 = d3dDevice.DeviceRemovedReason;
 387                                 if( 削除理由.Success )
 388                                         return;
 389
 390                                 var エラー詳細 = new[] {
 391                                         new { Code = SharpDX.DXGI.ResultCode.DeviceHung.Code, Info = SharpDX.DXGI.ResultCode.DeviceHung.ApiCode, Rebuild = true },
 392                                         new { Code = SharpDX.DXGI.ResultCode.DeviceReset.Code, Info = SharpDX.DXGI.ResultCode.DeviceReset.ApiCode, Rebuild = true },
 393                                         new { Code = SharpDX.DXGI.ResultCode.DeviceRemoved.Code, Info = SharpDX.DXGI.ResultCode.DeviceRemoved.ApiCode, Rebuild = false },
 394                                         new { Code = SharpDX.DXGI.ResultCode.DriverInternalError.Code, Info = SharpDX.DXGI.ResultCode.DriverInternalError.ApiCode, Rebuild = false },
 395                                         new { Code = SharpDX.DXGI.ResultCode.InvalidCall.Code, Info = SharpDX.DXGI.ResultCode.InvalidCall.ApiCode, Rebuild = false },
 396                                 }.First( ( エラー ) => エラー.Code == 削除理由.Code );  // 見つからないなら System.InvalidOperationException 。
 397
 398                                 Trace.WriteLine( $"D3Dデバイスが消失しました: {エラー詳細.Info}" );
 399
 400                                 if( エラー詳細.Rebuild )
 401                                 {
 402                                         this.すべてのリソースを解放する();
 403                                         this.すべてのリソースを作成する();
 404                                 }
 405                                 else
 406                                 {
 407                                         異常状態なのでアプリを終了せよ = true;
 408                                 }
 409                         }
 410                 }
 411
 412                 private float dz( float 高さdpx, float 視野角deg )
 413                 {
 414                         return (float) ( 高さdpx / ( 4.0 * Math.Tan( SharpDX.MathUtil.DegreesToRadians( 視野角deg / 2.0f ) ) ) );
 415                 }
 416
 417                 #region " バックストア。"
 418                 //----------------
 419                 private SharpDX.Direct2D1.Factory2 bs_D2DFactory2 = null;
 420                 private SharpDX.DirectWrite.Factory bs_DWriteFactory = null;
 421                 private SharpDX.WIC.ImagingFactory2 bs_WicImagingFactory2 = null;
 422                 private SharpDX.MediaFoundation.DXGIDeviceManager bs_DXGIDeviceManager = null;
 423                 private SharpDX.DXGI.SwapChain bs_SwapChain = null;
 424                 private SharpDX.Mathematics.Interop.RawViewportF[] bs_D3DViewPort = new SharpDX.Mathematics.Interop.RawViewportF[ 1 ];
 425                 private SharpDX.Direct3D11.DepthStencilState bs_D3DDepthStencilState = null;
 426                 private SharpDX.Direct3D11.RenderTargetView bs_D3DRenderTargetView = null;
 427                 private SharpDX.Direct3D11.Texture2D bs_D3DDepthStencil = null;
 428                 private SharpDX.Direct3D11.DepthStencilView bs_D3DDepthStencilView = null;
 429                 private SharpDX.Direct2D1.Device1 bs_D2DDevice1 = null;
 430                 private SharpDX.Direct2D1.DeviceContext1 bs_D2DContext1 = null;
 431                 private SharpDX.Direct2D1.Bitmap1 bs_D2DRenderTargetBitmap = null;
 432                 //----------------
 433                 #endregion
 434         }
 435 }