C# BitmapImage.CopyTo方法代码示例

        public static Texture2D ConvertBitmapToTexture(BitmapImage bs)
        {
            var texture2D = new Texture2D(GraphicsDeviceManager.Current.GraphicsDevice, bs.PixelWidth, bs.PixelHeight, false, SurfaceFormat.Color);
            bs.CopyTo(texture2D);

            return texture2D;
        }

        public static Texture2D LoadBitmapFromApplicationResources(string imageName)
        {
            var sr = Application.GetResourceStream(new Uri(imageName, UriKind.Relative));
            var bs = new BitmapImage();
            bs.SetSource(sr.Stream);

            var texture2D = new Texture2D(GraphicsDeviceManager.Current.GraphicsDevice, bs.PixelWidth, bs.PixelHeight, false, SurfaceFormat.Color);
            bs.CopyTo(texture2D);

            return texture2D;
        }

		private void LoadNormalTexture()
		{
			Debug.Assert( TextureType == TextureType.OneD || TextureType == TextureType.TwoD );

			if ( Root.Instance.RenderSystem.ConfigOptions[ "Use Content Pipeline" ].Value == "Yes" )
			{
				var acm = new AxiomContentManager( (XnaRenderSystem)Root.Instance.RenderSystem, "Content" );
				_normTexture = acm.Load<Texture2D>( Name );
				_texture = _normTexture;
				Width = _normTexture.Width;
				Height = _normTexture.Height;
				internalResourcesCreated = true;
			}
#if !( XBOX || XBOX360 )
			else
			{
				Stream stream;
				if ( Name.EndsWith( ".dds" ) )
				{
					stream = ResourceGroupManager.Instance.OpenResource( Name );

					// use Xna to load the image directly from the stream
					//XFG.TextureCreationParameters tcp = new XFG.TextureCreationParameters();
					//tcp.Filter = Microsoft.Xna.Framework.Graphics.FilterOptions.Triangle;
					//tcp.MipLevels = MipmapCount;

					//Not sure how to set MipLevels. _normTexture.LevelCount is get-only...
#if SILVERLIGHT
					var im = new BitmapImage();
					im.SetSource(stream);
					_normTexture = new Texture2D(_device, im.PixelWidth, im.PixelHeight, false, SurfaceFormat.Color);
					im.CopyTo(_normTexture);
#else
					_normTexture = Texture2D.FromStream( _device, stream ); //.FromFile( _device, stream, tcp );
#endif

					// store a ref for the base texture interface
					_texture = _normTexture;

					//reset stream position to read Texture information
					////stream.Position = 0;

					// set the image data attributes

					//Not sure if these lines accomplish the same thing as the below commented-out ones.
					SetSrcAttributes( _normTexture.Width, _normTexture.Height, 1,
									  XnaHelper.Convert( _normTexture.Format ) );
					SetFinalAttributes( _normTexture.Width, _normTexture.Height, 1,
										XnaHelper.Convert( _normTexture.Format ) );

					//XFG.TextureInformation info = XFG.Texture2D.GetTextureInformation( stream );
					//SetSrcAttributes( info.Width, info.Height, 1, XnaHelper.Convert( info.Format ) );
					//SetFinalAttributes( info.Width, info.Height, 1, XnaHelper.Convert( info.Format ) );

					internalResourcesCreated = true;
				}
				else
				{
					// find & load resource data intro stream to allow resource group changes if required
					stream = ResourceGroupManager.Instance.OpenResource( Name, Group, true, this );
//#if SILVERLIGHT
//                    if (stream == null)
//                    {
//                        Name += ".png";
//                        stream = ResourceGroupManager.Instance.OpenResource( Name, Group, true, this );
//                    }
//#endif
					var pos = Name.LastIndexOf( "." );
					var ext = Name.Substring( pos + 1 );

					// Call internal LoadImages, not LoadImage since that's external and
					// will determine load status etc again
					var image = Image.FromStream( stream, ext );
					LoadImages( new[]
								{
									image
								} );
					image.Dispose();
				}

				if (stream != null)
					stream.Close();
			}
#endif
		}