public Direct2D1RenderTargetBitmap( Factory d2dFactory, ImagingFactory wicFactory, SharpDX.WIC.Bitmap bitmap) : base(wicFactory, bitmap) { double dpiX; double dpiY; this.d2dFactory = d2dFactory; bitmap.GetResolution(out dpiX, out dpiY); this.target = new WicRenderTarget( d2dFactory, bitmap, new RenderTargetProperties { DpiX = (float)dpiX, DpiY = (float)dpiY, }); }