/// <summary>
/// Initializes a new instance of the <see cref="DeviceContext3"/> class using an existing <see cref="Device3"/>.
/// </summary>
/// <param name="device">The device.</param>
/// <param name="options">The options to be applied to the created device context.</param>
/// <remarks>
/// The new device context will not have a selected target bitmap. The caller must create and select a bitmap as the target surface of the context.
/// </remarks>
/// <unmanaged>HRESULT ID2D1Device3::CreateDeviceContext([In] D2D1_DEVICE_CONTEXT_OPTIONS options,[Out] ID2D1DeviceContext3** deviceContext3)</unmanaged>
public DeviceContext3(Device3 device, DeviceContextOptions options)
: base(IntPtr.Zero)
{
device.CreateDeviceContext(options, this);
}
/// <summary>
/// Initializes a new instance of the <see cref="DeviceContext3"/> class using an existing <see cref="Device3"/>.
/// </summary>
/// <param name="device">The device.</param>
/// <param name="options">The options to be applied to the created device context.</param>
/// <remarks>
/// The new device context will not have a selected target bitmap. The caller must create and select a bitmap as the target surface of the context.
/// </remarks>
/// <unmanaged>HRESULT ID2D1Device3::CreateDeviceContext([In] D2D1_DEVICE_CONTEXT_OPTIONS options,[Out] ID2D1DeviceContext3** deviceContext3)</unmanaged>
public DeviceContext3(Device3 device, DeviceContextOptions options)
: base(IntPtr.Zero)
{
device.CreateDeviceContext(options, this);
}
public void Run()
{
#region setup resources
var mainForm = new RenderForm();
var scDescription = new SwapChainDescription()
{
BufferCount = 1,
ModeDescription =
new ModeDescription(
0,
0,
new Rational(60, 1),
Format.R8G8B8A8_UNorm),
IsWindowed = true,
OutputHandle = mainForm.Handle,
SampleDescription = new SampleDescription(1, 0),
SwapEffect = SwapEffect.Discard,
Usage = Usage.RenderTargetOutput
};
//DeviceCreationFlags.Debug flag below will show debug layer messages in your output window.
//Need proper version of windows sdk for it to work, otherwise it will throw an exception.
//You also need to right click your project->properties->debug (on the left panel)-> check "enable native code debugging"
// Create Device and SwapChain
_d3d11.Device.CreateWithSwapChain(
DriverType.Hardware,
DeviceCreationFlags.BgraSupport | DeviceCreationFlags.Debug,
new[] { _d3d.FeatureLevel.Level_12_1 },
scDescription,
out d3d11Device,
out swapChain);
// Ignore all windows events
dxgiFactory = swapChain.GetParent <_dxgi.Factory1>();
dxgiFactory.MakeWindowAssociation(mainForm.Handle, WindowAssociationFlags.IgnoreAll);
d2dFactory = new _d2d.Factory();
d2dFactory4 = d2dFactory.QueryInterface <_d2d.Factory4>();
dxgiDevice = d3d11Device.QueryInterface <_dxgi.Device>();
d2dDevice3 = new _d2d.Device3(d2dFactory4, dxgiDevice);
d2dDeviceContext3 = new _d2d.DeviceContext3(d2dDevice3, DeviceContextOptions.None);
#endregion
#region create drawing input
sourceImage = createD2DBitmap(@"yourFile.png", d2dDeviceContext3);
spriteBatch = new SpriteBatch(d2dDeviceContext3);
var destinationRects = new RawRectangleF[1];
destinationRects[0] = new RectangleF(100, 50, sourceImage.Size.Width, sourceImage.Size.Height);
var sourceRects = new RawRectangle[1];
sourceRects[0] = new RectangleF(0, 0, sourceImage.Size.Width, sourceImage.Size.Height);
#endregion
#region mainLoop
RenderLoop.Run(mainForm, () =>
{
if (d2dTarget != null)
{
d2dTarget.Dispose();
d2dTarget = null;
}
using (var backBuffer = Texture2D.FromSwapChain <Texture2D>(swapChain, 0))
{
using (var surface = backBuffer.QueryInterface <Surface>())
{
var bmpProperties = new BitmapProperties1(
new PixelFormat(Format.R8G8B8A8_UNorm, _d2d.AlphaMode.Premultiplied),
dpiX: 96,
dpiY: 96,
bitmapOptions: BitmapOptions.Target | BitmapOptions.CannotDraw);
d2dTarget = new Bitmap1(
d2dDeviceContext3,
surface,
bmpProperties);
d2dDeviceContext3.Target = d2dTarget;
}
}
//the key missing piece: cannot use per primitive antialiasing with spritebatch
d2dDeviceContext3.AntialiasMode = AntialiasMode.Aliased;
d2dDeviceContext3.BeginDraw();
spriteBatch.Clear();
spriteBatch.AddSprites(
1,
destinationRects,
sourceRects,
null,
null,
destinationRectanglesStride: 0, //0 stride because there is only 1 element
sourceRectanglesStride: 0,
colorsStride: 0,
transformsStride: 0);
d2dDeviceContext3.DrawSpriteBatch(
spriteBatch: spriteBatch,
startIndex: 0,
spriteCount: 1,
bitmap: sourceImage,
interpolationMode: BitmapInterpolationMode.Linear,
spriteOptions: SpriteOptions.ClampToSourceRectangle);
d2dDeviceContext3.EndDraw();
//first param set to 1 would indicate waitVerticalBlanking
swapChain.Present(0, PresentFlags.None);
});
#endregion
}