c++ - Directx 11 Bitblt 替代方案

Question

我有以下功能，我正试图将其集成到我的 directx 11 应用程序中。当我使用 directx9 时，一切正常，但是当转换为 directx 11 时，我在 Bitblt 行出现蓝屏死机错误(我一定是 HDC 做错了什么？)。我想知道将此代码转换为 directx 11 兼容表面而不是 HDC 的最佳方法是什么。

函数如下:

void CFlashDXPlayer::DrawFrame(HDC dc)
{
if (m_dirtyFlag)
{
    IViewObject* pViewObject = NULL;
    m_flashInterface->QueryInterface(IID_IViewObject, (LPVOID*) &pViewObject);
    if (pViewObject != NULL)
    {
        // Combine regions
        HRGN unionRgn, first, second = NULL;
        unionRgn = CreateRectRgnIndirect(&m_dirtyRects[0]);
        if (m_dirtyRects.size() >= 2)
            second = CreateRectRgn(0, 0, 1, 1);

        for (std::vector<RECT>::iterator it = m_dirtyRects.begin() + 1; it != m_dirtyRects.end(); ++it)
        {
            // Fill combined region
            first = unionRgn;
            SetRectRgn(second, it->left, it->top, it->right, it->bottom);
            unionRgn = CreateRectRgn(0, 0, 1, 1);

            CombineRgn(unionRgn, first, second, RGN_OR);
            DeleteObject(first);
        }

        if (second)
            DeleteObject(second);

        RECT clipRgnRect; GetRgnBox(unionRgn, &clipRgnRect);
        RECTL clipRect = { 0, 0, m_width, m_height };

        // Fill background
        if (m_transpMode != TMODE_FULL_ALPHA)
        {
            // Set clip region
            SelectClipRgn(dc, unionRgn);

            COLORREF fillColor = GetBackgroundColor();
            HBRUSH fillColorBrush = CreateSolidBrush(fillColor);
            FillRgn(dc, unionRgn, fillColorBrush);
            DeleteObject(fillColorBrush);

            // Draw to main buffer
            HRESULT hr = pViewObject->Draw(DVASPECT_TRANSPARENT, 1, NULL, NULL, NULL, dc, &clipRect, &clipRect, NULL, 0);
            assert(SUCCEEDED(hr));
        }
        else
        {
            if (m_alphaBlackDC == NULL)
            {
                // Create memory buffers
                BITMAPINFOHEADER bih = {0};
                bih.biSize = sizeof(BITMAPINFOHEADER);
                bih.biBitCount = 32;
                bih.biCompression = BI_RGB;
                bih.biPlanes = 1;
                bih.biWidth = LONG(m_width);
                bih.biHeight = -LONG(m_height);

                m_alphaBlackDC = CreateCompatibleDC(dc);
                m_alphaBlackBitmap = CreateDIBSection(m_alphaBlackDC, (BITMAPINFO*)&bih, DIB_RGB_COLORS, (void**)&m_alphaBlackBuffer, 0, 0);
                SelectObject(m_alphaBlackDC, m_alphaBlackBitmap);

                m_alphaWhiteDC = CreateCompatibleDC(dc);
                m_alphaWhiteBitmap = CreateDIBSection(m_alphaWhiteDC, (BITMAPINFO*)&bih, DIB_RGB_COLORS, (void**)&m_alphaWhiteBuffer, 0, 0);
                SelectObject(m_alphaWhiteDC, m_alphaWhiteBitmap);
            }

            HRESULT hr;
            HBRUSH fillColorBrush;

            // Render frame twice - against white and against black background to calculate alpha
            SelectClipRgn(m_alphaBlackDC, unionRgn);

            COLORREF blackColor = 0x00000000;
            fillColorBrush = CreateSolidBrush(blackColor);
            FillRgn(m_alphaBlackDC, unionRgn, fillColorBrush);
            DeleteObject(fillColorBrush);

            hr = pViewObject->Draw(DVASPECT_TRANSPARENT, 1, NULL, NULL, NULL, m_alphaBlackDC, &clipRect, &clipRect, NULL, 0);
            assert(SUCCEEDED(hr));

            // White background
            SelectClipRgn(m_alphaWhiteDC, unionRgn);

            COLORREF whiteColor = 0x00FFFFFF;
            fillColorBrush = CreateSolidBrush(whiteColor);
            FillRgn(m_alphaWhiteDC, unionRgn, fillColorBrush);
            DeleteObject(fillColorBrush);

            hr = pViewObject->Draw(DVASPECT_TRANSPARENT, 1, NULL, NULL, NULL, m_alphaWhiteDC, &clipRect, &clipRect, NULL, 0);
            assert(SUCCEEDED(hr));

            // Combine alpha
            for (LONG y = clipRgnRect.top; y < clipRgnRect.bottom; ++y)
            {
                int offset = y * m_width * 4 + clipRgnRect.left * 4;
                for (LONG x = clipRgnRect.left; x < clipRgnRect.right; ++x)
                {
                    BYTE blackRed = m_alphaBlackBuffer[offset];
                    BYTE whiteRed = m_alphaWhiteBuffer[offset];
                    m_alphaBlackBuffer[offset + 3] = 255 - (whiteRed - blackRed);
                    offset += 4;
                }
            }

            // Blit result to target DC
            BitBlt(dc, clipRgnRect.left, clipRgnRect.top,
                   clipRgnRect.right - clipRgnRect.left,
                   clipRgnRect.bottom - clipRgnRect.top,
                   m_alphaBlackDC, clipRgnRect.left, clipRgnRect.top, SRCCOPY);
        }

        DeleteObject(unionRgn);
        pViewObject->Release();
    }

    m_dirtyFlag = false;
    m_dirtyRects.clear();
    m_dirtyUnionRect.left = m_dirtyUnionRect.top = LONG_MAX;
    m_dirtyUnionRect.right = m_dirtyUnionRect.bottom = -LONG_MAX;
}
}

我传递给此函数的 HDC 是按以下方式创建的:

D3D11_TEXTURE2D_DESC textureDesc;                  
ZeroMemory(&textureDesc, sizeof(textureDesc));                  
textureDesc.Width = width;                  
textureDesc.Height = height;                  
textureDesc.MipLevels = 1;                  
textureDesc.ArraySize = 1;                  
textureDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;                  
textureDesc.SampleDesc.Count = 1;                  
textureDesc.Usage = D3D11_USAGE_DEFAULT;                  
textureDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET;                  
textureDesc.MiscFlags = D3D11_RESOURCE_MISC_GDI_COMPATIBLE;  
HRESULT hr = device->CreateTexture2D(&textureDesc, NULL, &m_flashTexture); 


HRESULT hResult;
HDC hDC;
IDXGISurface1 *pSurface = NULL; 
hResult = m_flashTexture->QueryInterface(__uuidof(IDXGISurface1), (void**)&pSurface); 
hResult = pSurface->GetDC(TRUE, &hDC);                  
assert(SUCCEEDED(hResult));  
m_flashPlayer->DrawFrame(hDC);

对我做错了什么有什么想法吗？我似乎无法弄清楚发生了什么，以及为什么当我使用 Directx 9 obejcts 时它不会导致蓝屏。有更好的方法吗？

(我也尝试更新我的驱动程序，它们都是最新的)。

谢谢你的帮助。

Answer 1

事实证明这确实是一个驱动程序问题。当我在我的 latop 中将我的显卡设置为 radeon 时，它可以正常工作，但是当我出于某种原因将它设置为可切换时，即使它应该选择我的 radeon，它仍然会崩溃。我需要修复图形模式。很奇怪，但至少我猜这不是我的程序。