[DX 11.2] [XAML] [C ++] [DirectXTK] SaveWICTextureToFile和SwapChainPanel [英] [DX 11.2][XAML][C++][DirectXTK] SaveWICTextureToFile and SwapChainPanel

问题描述

我正在尝试使用DirectXTK的SaveWICTextureToFile实用程序来获取屏幕截图。我正在使用带有SwapChainPanel元素的XAML。不幸的是，该方法始终保存一个填充纯色而不是当前屏幕截图的矩形。
每次调用SaveWICTextureToFile方法都会保存不同的颜色。

这是我的代码（稍微简化）：

 void DirectXPage :: SaveButton_Click（Platform :: Object ^ sender，Windows :: UI :: Xaml :: RoutedEventArgs ^ e）
 {
 critical_section :: scoped_lock lock（m_main-> GetCriticalSection（））; 
 
 auto folder = Windows :: Storage :: ApplicationData :: Current-> TemporaryFolder; 
 
 WCHAR fname [_MAX_PATH]; 
 wcscpy_s（fname，folder-> Path-> Data（））; 
 wcscat_s（fname，L" \\screenshot.png"）; 
 
 auto context = m_deviceResources-> GetD3DDeviceContext（）; 
 auto swapChain = m_deviceResources-> GetSwapChain（）; 
 
 ID3D11Texture2D * backBuffer = nullptr; 
 HRESULT hr = swapChain-> GetBuffer（0，__ uuidof（* backBuffer），（LPVOID *）& backBuffer）; 
 if（SUCCEEDED（hr））
 {
 HRESULT hr = SaveWICTextureToFile（context，backBuffer，GUID_ContainerFormatPng，fname）; 
 
 DX :: ThrowIfFailed（hr）; 
 
 // ... FileSavePicker等的模式代码。
} 
} 

我做错了什么？

谢谢，

Leszek

---

Wiki： wbswiki.com
网站： www.wisenheimerbrainstorm.com

解决方案

您好ata6502，

根据您的描述，此问题与DX有关。我将其移至DX相关论坛，以便您获得更好的支持。

感谢您的理解。

问候。

Hi,

I'm trying to use the SaveWICTextureToFile utility from DirectXTK to grab a screenshot. I'm using XAML with a SwapChainPanel element. Unfortunately, the method always saves a rectangle filled with solid color rather than the current screenshot. Every time I call the SaveWICTextureToFile method is saves a different color.

This is my code (somewhat simplified):

void DirectXPage::SaveButton_Click(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e)
{
    critical_section::scoped_lock lock(m_main->GetCriticalSection());

    auto folder = Windows::Storage::ApplicationData::Current->TemporaryFolder;

    WCHAR fname[_MAX_PATH];
    wcscpy_s(fname, folder->Path->Data());
    wcscat_s(fname, L"\\screenshot.png");

    auto context = m_deviceResources->GetD3DDeviceContext();
    auto swapChain = m_deviceResources->GetSwapChain();

    ID3D11Texture2D* backBuffer = nullptr;
    HRESULT hr = swapChain->GetBuffer(0, __uuidof(*backBuffer), (LPVOID*)&backBuffer);
    if (SUCCEEDED(hr))
    {
        HRESULT hr = SaveWICTextureToFile(context, backBuffer, GUID_ContainerFormatPng, fname);

        DX::ThrowIfFailed(hr);

        // ... mode code for FileSavePicker etc.
    }
}

What am I doing wrong?

Thanks,

Leszek

---

Wiki: wbswiki.com
Website: www.wisenheimerbrainstorm.com

解决方案

Hello ata6502,

From your description, this issue is related with DX. I move it to the DX related forum so that you could get better support.

Thanks for your understanding.

Regards.

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