GetAvailableTextureMem在Direct3D 11

Question

我正在寻找一种可能性来估计Direct3D中的空闲纹理内存，就像使用IDirect3DDevice9::GetAvailableTextureMem一样，但目前为止还没有发现任何东西。有什么建议么？

Answer 1

您可以使用此代码片段：

int getAviableVideoMemoryInBytes(ID3D11Device* pd3dDevice) 
{ 
    assert(pd3dDevice); 

    IDXGIDevice * pDXGIDevice = nullptr; 
    HRESULT hr = pd3dDevice->QueryInterface(__uuidof(IDXGIDevice), (void **)&pDXGIDevice); 

    if(FAILED(hr)) 
    { 
     std::cout << "Failed to query interface IDXGIDevice" << std::endl; 
    } 

    IDXGIAdapter * pDXGIAdapter = nullptr; 
    pDXGIDevice->GetAdapter(&pDXGIAdapter); 

    DXGI_ADAPTER_DESC adapterDesc; 
    pDXGIAdapter->GetDesc(&adapterDesc); 

    pDXGIDevice->Release(); 

    return adapterDesc.DedicatedVideoMemory; 
}