FDK24/Utilities.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Diagnostics;
   4 using System.Linq;
   5
   6 namespace FDK
   7 {
   8         public static class Utilities
   9         {
  10                 /// <summary>
  11                 /// Dispose して、null を代入する。
  12                 /// </summary>
  13                 /// <param name="obj">IDisposable を実装するオブジェクト。</param>
  14                 public static void 解放する<T>( ref T obj ) where T : IDisposable
  15                 {
  16                         ( obj as IDisposable )?.Dispose();
  17                         obj = default( T );
  18                 }
  19
  20                 /// <summary>
  21                 /// 画像ファイルからシェーダリソースビューを作成して返す。
  22                 /// D3DX11CreateShaderResourceViewFromFile() の代わり。
  23                 /// </summary>
  24                 public static SharpDX.Direct3D11.ShaderResourceView CreateShaderResourceViewFromFile(
  25                         SharpDX.Direct3D11.Device d3dDevice, string 画像ファイルパス, out SharpDX.Size2F ビューのサイズ )
  26                 {
  27                         ビューのサイズ = new SharpDX.Size2F( 0, 0 );
  28                         var srv = (SharpDX.Direct3D11.ShaderResourceView) null;
  29                         using( var image = new System.Drawing.Bitmap( 画像ファイルパス ) )
  30                         {
  31                                 var 画像の矩形 = new System.Drawing.Rectangle( 0, 0, image.Width, image.Height );
  32                                 using( var bitmap = image.Clone( 画像の矩形, System.Drawing.Imaging.PixelFormat.Format32bppArgb ) )
  33                                 {
  34                                         var ロック領域 = bitmap.LockBits( 画像の矩形, System.Drawing.Imaging.ImageLockMode.ReadOnly, bitmap.PixelFormat );
  35                                         var dataBox = new[] { new SharpDX.DataBox( ロック領域.Scan0, bitmap.Width * 4, bitmap.Height ) };
  36                                         var textureDesc = new SharpDX.Direct3D11.Texture2DDescription() {
  37                                                 ArraySize = 1,
  38                                                 BindFlags = SharpDX.Direct3D11.BindFlags.ShaderResource,
  39                                                 CpuAccessFlags = SharpDX.Direct3D11.CpuAccessFlags.None,
  40                                                 Format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
  41                                                 Height = bitmap.Height,
  42                                                 Width = bitmap.Width,
  43                                                 MipLevels = 1,
  44                                                 OptionFlags = SharpDX.Direct3D11.ResourceOptionFlags.None,
  45                                                 SampleDescription = new SharpDX.DXGI.SampleDescription( 1, 0 ),
  46                                                 Usage = SharpDX.Direct3D11.ResourceUsage.Default
  47                                         };
  48                                         using( var texture = new SharpDX.Direct3D11.Texture2D( d3dDevice, textureDesc, dataBox ) )
  49                                         {
  50                                                 bitmap.UnlockBits( ロック領域 );
  51                                                 srv = new SharpDX.Direct3D11.ShaderResourceView( d3dDevice, texture );
  52                                         }
  53                                 }
  54                                 // 戻り値１：ビューのサイズ
  55                                 ビューのサイズ = new SharpDX.Size2F( 画像の矩形.Width, 画像の矩形.Height );
  56                         }
  57                         // 戻り値２：シェーダリソースビュー
  58                         return srv;
  59                 }
  60         }
  61 }