Question

我想为C＃WinForms应用程序实现硬件加速。原因是我必须绘制150 x 720p图像并且5个图片框控件需要太长时间（缩放+图像绘制），因此处理和重新加载时出现问题。所以我处理了ShapeDX。

但现在我卡住了，不知道如何绘制2D纹理。为了测试代码我只有一个测试按钮和一个PictureBox。

当我在PictureBox中运行代码时，也加载了DirectX（Draw或3D）。我承认黑色背景。 但我不明白必须如何绘制纹理。

        String imageFile = "Image.JPG";

        Control TargetControl = this.pictureBoxCurrentFrameL;
        int TotalWidth = TargetControl.Width;
        int TotalHeight = TargetControl.Height;

        SharpDX.Direct3D11.Device defaultDevice = new SharpDX.Direct3D11.Device(SharpDX.Direct3D.DriverType.Hardware, SharpDX.Direct3D11.DeviceCreationFlags.Debug);

        SharpDX.Toolkit.Graphics.GraphicsDevice graphicsDevice = SharpDX.Toolkit.Graphics.GraphicsDevice.New(defaultDevice);
        SharpDX.Toolkit.Graphics.PresentationParameters presentationParameters = new SharpDX.Toolkit.Graphics.PresentationParameters();
        presentationParameters.DeviceWindowHandle = this.pictureBoxCurrentFrameL.Handle;
        presentationParameters.BackBufferWidth = TotalWidth;
        presentationParameters.BackBufferHeight = TotalHeight;

        SharpDX.Toolkit.Graphics.SwapChainGraphicsPresenter swapChainGraphicsPresenter = new SharpDX.Toolkit.Graphics.SwapChainGraphicsPresenter(graphicsDevice, presentationParameters);
        SharpDX.Toolkit.Graphics.Texture2D texture2D = SharpDX.Toolkit.Graphics.Texture2D.Load(graphicsDevice, imageFile);

        //Now i should draw. But how?

        swapChainGraphicsPresenter.Present();/**/

在Windows 10上使用Microsoft Visual Studio社区2015（.Net 4，C＃WinForm）和SharpDX-SDK-2.6.3！

感谢您的帮助。

Answer 1

我通过简单地切换到SlimDX（SlimDX Runtime .NET 4.0 x64 2012年1月.msi，.Net4，Win10，MS Visual Studio Community 2015，Winforms App。）解决了这个问题。有几个有用的教程。

使用SlimDX只将一个DLL链接到你的项目！安装SlimDX后你会在你的C盘上找到这个SlimDX.dll文件。

重要的是要了解Direct2D至少需要一个工厂和渲染目标。 RenderTarget指向要使用的对象（Control / form / etc）并接管绘图。

不需要交换链。内部可能由渲染目标使用。最重要的是将位图转换为有用的Direct2D位图（用于绘图）。否则，您也可以从MemoryStream处理位图数据。

对于那些正在寻找解决方案的人：

        Control targetControl = this.pictureBoxCurrentFrameL;
        String imageFile = "Image.JPG";

        //Update control styles, works for forms, not for controls. I solve this later otherwise .
        //this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
        //this.SetStyle(ControlStyles.Opaque, true);
        //this.SetStyle(ControlStyles.ResizeRedraw, true);

        //Get requested debug level
        SlimDX.Direct2D.DebugLevel debugLevel = SlimDX.Direct2D.DebugLevel.None;

        //Resources for Direct2D rendering
        SlimDX.Direct2D.Factory d2dFactory = new SlimDX.Direct2D.Factory(SlimDX.Direct2D.FactoryType.Multithreaded, debugLevel);

        //Create the render target
        SlimDX.Direct2D.WindowRenderTarget d2dWindowRenderTarget = new SlimDX.Direct2D.WindowRenderTarget(d2dFactory, new SlimDX.Direct2D.WindowRenderTargetProperties() {
            Handle = targetControl.Handle,
            PixelSize = targetControl.Size,
            PresentOptions = SlimDX.Direct2D.PresentOptions.Immediately
        });

        //Paint!
        d2dWindowRenderTarget.BeginDraw();
        d2dWindowRenderTarget.Clear(new SlimDX.Color4(Color.LightSteelBlue));

        //Convert System.Drawing.Bitmap into SlimDX.Direct2D.Bitmap!
        System.Drawing.Bitmap bitmap = (System.Drawing.Bitmap)Properties.Resources.Image_720p;//loaded from embedded resource, can be changed to Bitmap.FromFile(imageFile); to load from hdd!
        SlimDX.Direct2D.Bitmap d2dBitmap = null;
        System.Drawing.Imaging.BitmapData bitmapData = bitmap.LockBits(new Rectangle(new Point(0, 0), bitmap.Size), System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);//TODO: PixelFormat is very important!!! Check!
        SlimDX.DataStream dataStream = new SlimDX.DataStream(bitmapData.Scan0, bitmapData.Stride * bitmapData.Height, true, false);
        SlimDX.Direct2D.PixelFormat d2dPixelFormat = new SlimDX.Direct2D.PixelFormat(SlimDX.DXGI.Format.B8G8R8A8_UNorm, SlimDX.Direct2D.AlphaMode.Premultiplied);
        SlimDX.Direct2D.BitmapProperties d2dBitmapProperties = new SlimDX.Direct2D.BitmapProperties();
        d2dBitmapProperties.PixelFormat = d2dPixelFormat;
        d2dBitmap = new SlimDX.Direct2D.Bitmap(d2dWindowRenderTarget, new Size(bitmap.Width, bitmap.Height), dataStream, bitmapData.Stride, d2dBitmapProperties);
        bitmap.UnlockBits(bitmapData);

        //Draw SlimDX.Direct2D.Bitmap
        d2dWindowRenderTarget.DrawBitmap(d2dBitmap, new Rectangle(0, 0, bitmap.Width, bitmap.Height));/**/

        d2dWindowRenderTarget.EndDraw();

        //Dispose everything u dont need anymore.
        //bitmap.Dispose();//......

因此使用Direct2D非常简单，所有代码都可以压缩为2个主线+绘图：

        SlimDX.Direct2D.Factory d2dFactory = new SlimDX.Direct2D.Factory(SlimDX.Direct2D.FactoryType.Multithreaded, SlimDX.Direct2D.DebugLevel.None);
        SlimDX.Direct2D.WindowRenderTarget d2dWindowRenderTarget = new SlimDX.Direct2D.WindowRenderTarget(d2dFactory, new SlimDX.Direct2D.WindowRenderTargetProperties() { Handle = targetControl.Handle, PixelSize = targetControl.Size, PresentOptions = SlimDX.Direct2D.PresentOptions.Immediately });

        d2dWindowRenderTarget.BeginDraw();
        d2dWindowRenderTarget.Clear(new SlimDX.Color4(Color.LightSteelBlue));
        d2dWindowRenderTarget.DrawRectangle(new SlimDX.Direct2D.SolidColorBrush(d2dWindowRenderTarget, new SlimDX.Color4(Color.Red)), new Rectangle(20,20, targetControl.Width-40, targetControl.Height-40));
        d2dWindowRenderTarget.EndDraw();

C＃WinForm - SharpDX.Toolkit.Graphics绘制2D纹理

1 个答案: