/// <summary>
/// Creates all resources
/// </summary>
private void CreateResources(int viewWidth, int viewHeight, DpiScaling dpiScaling, bool forceInit)
{
// Calculate the screen size in device independent units
var scaledScreenSize = new SizeF(
viewWidth / dpiScaling.ScaleFactorX,
viewHeight / dpiScaling.ScaleFactorY);
// Cancel here if the device does not support 2D rendering
if (!forceInit &&
!_device.Supports2D)
{
return;
}
// Create the render target
using (var dxgiSurface = _renderTarget3D.QueryInterface <IDXGISurface>())
{
var bitmapProperties = new D2D.BitmapProperties1
{
DpiX = dpiScaling.DpiX,
DpiY = dpiScaling.DpiY,
BitmapOptions = D2D.BitmapOptions.Target | D2D.BitmapOptions.CannotDraw,
PixelFormat = new PixelFormat(
GraphicsHelper.Internals.DEFAULT_TEXTURE_FORMAT,
AlphaMode.Premultiplied)
};
_renderTargetBitmap = _device.DeviceContextD2D.CreateBitmapFromDxgiSurface(dxgiSurface, bitmapProperties);
_renderTarget2D = _device.DeviceContextD2D;
_graphics2D = new Graphics2D(_device, _device.DeviceContextD2D, scaledScreenSize);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Direct2DOverlayRenderer"/> class.
/// </summary>
internal Direct2DOverlayRenderer(EngineDevice device, D3D11.ID3D11Texture2D renderTarget3D, int viewWidth, int viewHeight, DpiScaling dpiScaling, bool forceInit)
{
_device = device;
_renderTarget3D = renderTarget3D;
this.CreateResources(viewWidth, viewHeight, dpiScaling, forceInit);
}
/// <summary>
/// Initializes a new instance of the <see cref="Direct2DOverlayRenderer"/> class.
/// </summary>
public Direct2DOverlayRenderer(EngineDevice device, D3D11.ID3D11Texture2D renderTarget3D, int viewWidth, int viewHeight, DpiScaling dpiScaling)
: this(device, renderTarget3D, viewWidth, viewHeight, dpiScaling, false)
{
}
