private unsafe void SaveScreenshot(string path, ContainerFormat format = ContainerFormat.Jpeg)
{
var d3d11GraphicsDevice = ((D3D11GraphicsDevice)_graphicsDevice !);
ID3D11Texture2D source = Headless ? d3d11GraphicsDevice !.OffscreenTexture : d3d11GraphicsDevice !.BackBufferTexture;
path = Path.Combine(AppContext.BaseDirectory, path);
using (ID3D11Texture2D staging = d3d11GraphicsDevice !.CaptureTexture(source))
{
staging.DebugName = "STAGING";
var textureDesc = staging !.Description;
// Determine source format's WIC equivalent
Guid pfGuid = default;
bool sRGB = false;
switch (textureDesc.Format)
{
case Format.R32G32B32A32_Float:
pfGuid = WICPixelFormat.Format128bppRGBAFloat;
break;
case Format.R16G16B16A16_Float:
pfGuid = WICPixelFormat.Format64bppRGBAHalf;
break;
case Format.R16G16B16A16_UNorm:
pfGuid = WICPixelFormat.Format64bppRGBA;
break;
// DXGI 1.1
case Format.R10G10B10_Xr_Bias_A2_UNorm:
pfGuid = WICPixelFormat.Format32bppRGBA1010102XR;
break;
case Format.R10G10B10A2_UNorm:
pfGuid = WICPixelFormat.Format32bppRGBA1010102;
break;
case Format.B5G5R5A1_UNorm:
pfGuid = WICPixelFormat.Format16bppBGRA5551;
break;
case Format.B5G6R5_UNorm:
pfGuid = WICPixelFormat.Format16bppBGR565;
break;
case Format.R32_Float:
pfGuid = WICPixelFormat.Format32bppGrayFloat;
break;
case Format.R16_Float:
pfGuid = WICPixelFormat.Format16bppGrayHalf;
break;
case Format.R16_UNorm:
pfGuid = WICPixelFormat.Format16bppGray;
break;
case Format.R8_UNorm:
pfGuid = WICPixelFormat.Format8bppGray;
break;
case Format.A8_UNorm:
pfGuid = WICPixelFormat.Format8bppAlpha;
break;
case Format.R8G8B8A8_UNorm:
pfGuid = WICPixelFormat.Format32bppRGBA;
break;
case Format.R8G8B8A8_UNorm_SRgb:
pfGuid = WICPixelFormat.Format32bppRGBA;
sRGB = true;
break;
case Format.B8G8R8A8_UNorm: // DXGI 1.1
pfGuid = WICPixelFormat.Format32bppBGRA;
break;
case Format.B8G8R8A8_UNorm_SRgb: // DXGI 1.1
pfGuid = WICPixelFormat.Format32bppBGRA;
sRGB = true;
break;
case Format.B8G8R8X8_UNorm: // DXGI 1.1
pfGuid = WICPixelFormat.Format32bppBGR;
break;
case Format.B8G8R8X8_UNorm_SRgb: // DXGI 1.1
pfGuid = WICPixelFormat.Format32bppBGR;
sRGB = true;
break;
default:
Console.WriteLine($"ERROR: ScreenGrab does not support all DXGI formats ({textureDesc.Format})");
return;
}
using var wicFactory = new IWICImagingFactory2();
//using IWICBitmapDecoder decoder = wicFactory.CreateDecoderFromFileName(path);
//using Stream stream = File.OpenWrite(path);
//using IWICStream wicStream = wicFactory.CreateStream(stream);
using IWICStream wicStream = wicFactory.CreateStream(path, FileAccess.Write);
using IWICBitmapEncoder encoder = wicFactory.CreateEncoder(format, wicStream);
// Create a Frame encoder
using IWICBitmapFrameEncode frame = encoder.CreateNewFrame(out SharpGen.Runtime.Win32.IPropertyBag2? props);
frame.Initialize(props);
frame.SetSize(textureDesc.Width, textureDesc.Height);
frame.SetResolution(72, 72);
// Screenshots don't typically include the alpha channel of the render target
Guid targetGuid;
switch (textureDesc.Format)
{
case Format.R32G32B32A32_Float:
case Format.R16G16B16A16_Float:
//if (IsWIC2())
{
targetGuid = WICPixelFormat.Format96bppRGBFloat;
}
//else
//{
// targetGuid = WICPixelFormat.Format24bppBGR;
//}
break;
case Format.R16G16B16A16_UNorm:
targetGuid = WICPixelFormat.Format48bppBGR;
break;
case Format.B5G5R5A1_UNorm:
targetGuid = WICPixelFormat.Format16bppBGR555;
break;
case Format.B5G6R5_UNorm:
targetGuid = WICPixelFormat.Format16bppBGR565;
break;
case Format.R32_Float:
case Format.R16_Float:
case Format.R16_UNorm:
case Format.R8_UNorm:
case Format.A8_UNorm:
targetGuid = WICPixelFormat.Format8bppGray;
break;
default:
targetGuid = WICPixelFormat.Format24bppBGR;
break;
}
frame.SetPixelFormat(targetGuid);
ID3D11DeviceContext1 context = d3d11GraphicsDevice !.DeviceContext;
const bool native = false;
if (native)
{
MappedSubresource mappedSubresource = context.Map(staging, 0, MapMode.Read);
int imageSize = mappedSubresource.RowPitch * textureDesc.Height;
if (targetGuid != pfGuid)
{
// Conversion required to write
using (IWICBitmap bitmapSource = wicFactory.CreateBitmapFromMemory(
textureDesc.Width,
textureDesc.Height,
pfGuid,
mappedSubresource.RowPitch,
imageSize,
mappedSubresource.DataPointer))
{
using (IWICFormatConverter formatConverter = wicFactory.CreateFormatConverter())
{
if (!formatConverter.CanConvert(pfGuid, targetGuid))
{
context.Unmap(staging, 0);
return;
}
formatConverter.Initialize(bitmapSource, targetGuid, BitmapDitherType.None, null, 0, BitmapPaletteType.MedianCut);
frame.WriteSource(formatConverter, new RectI(textureDesc.Width, textureDesc.Height));
}
}
}
else
{
// No conversion required
frame.WritePixels(textureDesc.Height, mappedSubresource.RowPitch, imageSize, mappedSubresource.DataPointer);
}
}
else
{
int stride = WICPixelFormat.GetStride(pfGuid, textureDesc.Width);
ReadOnlySpan <Color> colors = context.MapReadOnly <Color>(staging);
if (targetGuid != pfGuid)
{
// Conversion required to write
using (IWICBitmap bitmapSource = wicFactory.CreateBitmapFromMemory(
textureDesc.Width,
textureDesc.Height,
pfGuid,
colors,
stride))
{
using (IWICFormatConverter formatConverter = wicFactory.CreateFormatConverter())
{
if (!formatConverter.CanConvert(pfGuid, targetGuid))
{
context.Unmap(staging, 0);
return;
}
formatConverter.Initialize(bitmapSource, targetGuid, BitmapDitherType.None, null, 0, BitmapPaletteType.MedianCut);
frame.WriteSource(formatConverter, new RectI(textureDesc.Width, textureDesc.Height));
}
}
}
else
{
// No conversion required
frame.WritePixels(textureDesc.Height, stride, colors);
}
}
context.Unmap(staging, 0);
frame.Commit();
encoder.Commit();
}
}