/// <summary>
/// Creates device independent resources.
/// </summary>
/// <remarks>
/// This method is called at the initialization of this instance.
/// </remarks>
protected virtual void CreateDeviceIndependentResources()
{
#if DEBUG
var debugLevel = global::SharpDX.Direct2D1.DebugLevel.Information;
#else
var debugLevel = global::SharpDX.Direct2D1.DebugLevel.None;
#endif
// Dispose previous references and set to null
RemoveAndDispose(ref d2dFactory);
RemoveAndDispose(ref dwriteFactory);
RemoveAndDispose(ref wicFactory);
// Allocate new references
d2dFactory = Collect(new global::SharpDX.Direct2D1.Factory1(global::SharpDX.Direct2D1.FactoryType.SingleThreaded, debugLevel));
dwriteFactory = Collect(new global::SharpDX.DirectWrite.Factory(global::SharpDX.DirectWrite.FactoryType.Shared));
wicFactory = Collect(new global::SharpDX.WIC.ImagingFactory2());
}
/// <summary>
/// Copies to a stream using WIC. The format is converted if necessary.
/// </summary>
/// <param name="context"></param>
/// <param name="texture"></param>
/// <param name="outputFormat"></param>
/// <param name="stream"></param>
public void ToStream(global::SharpDX.Direct3D11.DeviceContext context, Texture2D texture, ImageFormat outputFormat, Stream stream)
{
if (wicFactory == null)
{
wicFactory = ToDispose(new global::SharpDX.WIC.ImagingFactory2());
}
DataStream dataStream;
var dataBox = context.MapSubresource(
texture,
0,
0,
MapMode.Read,
global::SharpDX.Direct3D11.MapFlags.None,
out dataStream);
try
{
var dataRectangle = new DataRectangle
{
DataPointer = dataStream.DataPointer,
Pitch = dataBox.RowPitch
};
var format = PixelFormatFromFormat(texture.Description.Format);
if (format == Guid.Empty)
{
return;
}
using (var bitmap = new global::SharpDX.WIC.Bitmap(
wicFactory,
texture.Description.Width,
texture.Description.Height,
format,
dataRectangle))
{
stream.Position = 0;
global::SharpDX.WIC.BitmapEncoder bitmapEncoder = null;
switch (outputFormat)
{
case ImageFormat.Bitmap:
bitmapEncoder = new global::SharpDX.WIC.BmpBitmapEncoder(wicFactory, stream);
break;
case ImageFormat.Jpeg:
bitmapEncoder = new global::SharpDX.WIC.JpegBitmapEncoder(wicFactory, stream);
break;
case ImageFormat.Png:
bitmapEncoder = new global::SharpDX.WIC.PngBitmapEncoder(wicFactory, stream);
break;
default:
return;
}
try
{
using (var bitmapFrameEncode = new global::SharpDX.WIC.BitmapFrameEncode(bitmapEncoder))
{
bitmapFrameEncode.Initialize();
bitmapFrameEncode.SetSize(bitmap.Size.Width, bitmap.Size.Height);
var pixelFormat = format;
bitmapFrameEncode.SetPixelFormat(ref pixelFormat);
if (pixelFormat != format)
{
// IWICFormatConverter
var converter = new global::SharpDX.WIC.FormatConverter(wicFactory);
if (converter.CanConvert(format, pixelFormat))
{
converter.Initialize(bitmap, global::SharpDX.WIC.PixelFormat.Format24bppBGR, global::SharpDX.WIC.BitmapDitherType.None, null, 0, global::SharpDX.WIC.BitmapPaletteType.MedianCut);
bitmapFrameEncode.SetPixelFormat(ref pixelFormat);
bitmapFrameEncode.WriteSource(converter);
}
else
{
this.DebugMessage(string.Format("Unable to convert Direct3D texture format {0} to a suitable WIC format", texture.Description.Format.ToString()));
return;
}
}
else
{
bitmapFrameEncode.WriteSource(bitmap);
}
bitmapFrameEncode.Commit();
bitmapEncoder.Commit();
}
}
finally
{
bitmapEncoder.Dispose();
}
}
}
finally
{
context.UnmapSubresource(texture, 0);
}
}
