backbuffer和EndScene挂钩的问题

Question

所以，我一直在尝试使用EndScene钩子检索后备缓冲区数据，事情是因为某些原因我的GetBackBuffer返回了无效结果（我认为），因为当我使用pSurface-＆gt; GetDesc（）时返回后备缓冲区的宽度为1且高度为1，并且它总是返回填充为0的pBits。

HRESULT WINAPI hkEndScene(LPDIRECT3DDEVICE9 pDevice)
{
    IDirect3DSurface9* pSurface = 0;
    IDirect3DSurface9* pBBuffer = 0;
    D3DLOCKED_RECT Lock;
    D3DSURFACE_DESC desc;
    if (pDevice->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &pSurface) != D3D_OK)
    {
        logg << "ERROR GetBackBuffer: " << GetLastError() << endl;
        return pEndScene(pDevice);
    }
    pSurface->GetDesc(&desc);
    logg << "Size: " << desc.Width << ", " << desc.Height << endl;
    HRESULT hRes = pDevice->CreateOffscreenPlainSurface(desc.Width, desc.Height, desc.Format, D3DPOOL_SYSTEMMEM, &pBBuffer, NULL);
    if (hRes != D3D_OK) 
    {
        logg << "ERROR CreateOffscreenPlainSurface: " << GetLastError() << endl;
        return pEndScene(pDevice);
    }
    hRes = pDevice->GetRenderTargetData(pSurface, pBBuffer);
    if (hRes != D3D_OK)
    {
        logg << "ERROR GetRenderTargetData: " << GetLastError() << endl;
        return pEndScene(pDevice);
    }
    pBBuffer->LockRect(&Lock, NULL, D3DLOCK_READONLY);
    Com.DrawBuffer(Lock.pBits);
    logg << Lock.pBits << endl;
    //Usual free memory functions
    pSurface->Release();
    pBBuffer->UnlockRect();
    pBBuffer->Release();
    return pEndScene(pDevice);
}