A .NET library that provides the hardware-accelerated high-performance immediate mode rendering functionality via Direct2D API.

By using the graphics context to draw anything on windows form, control or draw in memory. The interface of the graphics context is designed like the .NET framework Windows Form GDI+ graphics interface, it's easy-to-use and user-friendly.

install-package unvell.d2dlib

When you have cloned the source code repository, the binary DLLs can be found at the binary/x86-build folder.

Use git to clone the source code repository

git clone https://github.com/jingwood/d2dlib

Open d2dlib.sln from the src folder with Visual Studio 2019 or later, choose Build -> Batch Build... menu, then click Build button.

The output DLLs will be generated to the binary/x86-build folder.

1. Add d2dlibexport.dll and d2dlibwinform.dll as application references
2. Put d2dlib.dll in the Debug, Release or the folder where the application runs

You can also add d2dlib.dll as a project file, and set it's property Copy to output folder to Copy if newer.

Make sure the "Prefer 32-bit" option is checked. You can find this option from the "Build" page of the project setting.

Change the project's build configuration from 'Any CPU' to 'x86' architecture.

1. Make windows form or control inherited from D2DForm or D2DControl class
2. Override OnRender(D2DGraphics g) method (do not override .NET OnPaint method)
3. Draw anything inside OnRender method via the g context

var rect = new D2DRect(0, 0, 10, 10);
g.DrawEllipse(rect, D2DColor.Red);

var ellipse = new D2DEllipse(0, 0, 10, 10);
g.DrawEllipse(ellipse, D2DColor.Gray);

protected override void OnRender(D2DGraphics g)
{
  g.DrawText("Hello World", D2DColor.Yellow, this.Font, 100, 200);
}

var brush = Device.CreateSolidColorBrush(new D2DColor(1, 0, 0.5));
g.DrawEllipse(rect, brush);

var brush = Device.CreateLinearGradientBrush(new D2DPoint(0, 0), new D2DPoint(200, 100),
  new D2DGradientStop[] {
    new D2DGradientStop(0, D2DColor.White),
    new D2DGradientStop(0.5, D2DColor.Green),
    new D2DGradientStop(1, D2DColor.Black),
  });

g.DrawBitmap(bmp, this.ClientRectangle);

// convert to Direct2D bitmap
var d2dbmp = Device.CreateBitmapFromGDIBitmap(gdiBitmap);

// draw Direct2D bitmap
g.DrawBitmap(d2dbmp, this.ClientRectangle);

// create and draw on GDI+ bitmap
var gdiBmp = new Bitmap(1024, 1024);
using (Graphics g = Graphics.FromImage(gdiBmp))
{
  g.DrawString("This is GDI+ bitmap layer", new Font(this.Font.FontFamily, 48), Brushes.Black, 10, 10);
}

// draw memory bitmap on screen
g.DrawBitmap(gdiBmp, this.ClientRectangle);

Learn more about Bitmap. See Example code

var bmpGraphics = this.Device.CreateBitmapGraphics(1024, 1024);
bmpGraphics.BeginRender();
bmpGraphics.FillRectangle(170, 790, 670, 80, new D2DColor(0.4f, D2DColor.Black));
bmpGraphics.DrawText("This is Direct2D device bitmap", D2DColor.Goldenrod, this.Font, 180, 800);
bmpGraphics.EndRender();

// draw this device bitmap on screen
g.DrawBitmap(bmpGraphics, this.ClientRectangle);

Note: When creating a Direct2D Device bitmap, do not forget call BeginRender and EndRender method.

By calling PushTransform and PopTransform to make a transform session.

g.PushTransform();

// rotate 45 degree
g.RotateTransform(45, centerPoint);

g.DrawBitmap(mybmp, rect);
g.PopTransform();

Fast images rendering See source code

Custom draw on memory bitmap See source code

Star space simulation See source code

Subtitle rendering See source code

Whiteboard App
See source code