/// <summary>
/// Creates and initializes GPU resources.
/// </summary>
void CreateDeviceResources()
{
// create the Direct3D device
D3D.FeatureLevel actualLevel;
D3D.DeviceContext d3dContext = null;
var d3dDevice = new D3D.Device(IntPtr.Zero);
var result = HResult.Ok;
for (int i = 0; i <= 1; i++)
{
// use WARP if hardware is not available
var dt = i == 0 ? D3D.DriverType.Hardware : D3D.DriverType.Warp;
result = D3D.D3D11.CreateDevice(null, dt, IntPtr.Zero, D3D.DeviceCreationFlags.BgraSupport | D3D.DeviceCreationFlags.SingleThreaded,
null, 0, D3D.D3D11.SdkVersion, d3dDevice, out actualLevel, out d3dContext);
if (result.Code != unchecked ((int)0x887A0004)) // DXGI_ERROR_UNSUPPORTED
{
break;
}
}
result.CheckError();
d3dContext.Dispose();
// store the DXGI device (for trimming when the application is being suspended)
_dxgiDevice = d3dDevice.QueryInterface <DXGI.Device>();
d3dDevice.Dispose();
// create a RenderTarget (DeviceContext for Direct2D drawing)
var d2dDevice = D2D.Device1.Create(_d2dFactory, _dxgiDevice);
var rt = D2D.DeviceContext1.Create(d2dDevice, D2D.DeviceContextOptions.None);
d2dDevice.Dispose();
rt.SetUnitMode(D2D.UnitMode.Pixels);
_d2dContext = rt;
// create built-in effects
_shadow = D2D.Effects.Shadow.Create(rt);
_affineTransform = D2D.Effects.AffineTransform2D.Create(rt);
_composite = D2D.Effects.Composite.Create(rt);
_displacementMap = D2D.Effects.DisplacementMap.Create(rt);
_turbulence = D2D.Effects.Turbulence.Create(rt);
_tile = D2D.Effects.Tile.Create(rt);
_gaussianBlur = D2D.Effects.GaussianBlur.Create(rt);
_convolveMatrix = D2D.Effects.ConvolveMatrix.Create(rt);
_colorMatrix = D2D.Effects.ColorMatrix.Create(rt);
_flood = D2D.Effects.Flood.Create(rt);
_crop = D2D.Effects.Crop.Create(rt);
// create a brush and TextLayout for drawing text on the image
_brush = D2D.SolidColorBrush.Create(rt, ColorF.Red);
var format = DW.TextFormat.Create(_dwFactory, "Gabriola", DW.FontWeight.Bold, DW.FontStyle.Normal, 28f);
_textLayout = DW.TextLayout1.Create(_dwFactory, "Direct2D Effects", format, 350f, 100f);
format.Dispose();
// add a font feature for more beautiful text
var typo = DW.Typography.Create(_dwFactory);
var fontFeature = new DW.FontFeature(DW.FontFeatureTag.StylisticSet7, 1);
typo.AddFontFeature(fontFeature);
_textLayout.SetTypography(typo, new DW.TextRange(0, 100));
typo.Dispose();
}