[angle]I can't get a shared handle from a d3d texture.

[李欣]

Hi all:

        I creat a texture from a angle device, and I want to get a shared handle. This is not feasible. This is why? And how to debug it? 

         GetSharedHandle always return 0, but shareHandle_nv12 is null.

###########################

   EGLDeviceEXT eglDevice;

    eglQueryDisplayAttribEXT(eglDisplay, EGL_DEVICE_EXT, (EGLAttrib*)&eglDevice);

    ID3D11Device* device;

    eglQueryDeviceAttribEXT(eglDevice, EGL_D3D11_DEVICE_ANGLE, (EGLAttrib*)&device);

    // Create the NV12 D3D11 texture

    D3D11_TEXTURE2D_DESC desc;

    desc.Width = width_nv12;

    desc.Height = height_nv12;

    desc.Format = DXGI_FORMAT_NV12;

    desc.MipLevels = 1;

    desc.ArraySize = 1;

    desc.SampleDesc.Count = 1;

    desc.SampleDesc.Quality = 0;

    desc.Usage = D3D11_USAGE_DEFAULT;

    desc.MiscFlags = D3D11_RESOURCE_MISC_SHARED;

    desc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;

    desc.CPUAccessFlags = 0;

    desc.MiscFlags = 0;

    (void)device->CreateTexture2D(&desc, nullptr, &texture_nv12);

    /*    ASSERT_NE(nullptr, texture);*/

    {

        IDXGIResource* otherResource(NULL);

        HRESULT  hr = texture_nv12->QueryInterface(__uuidof(IDXGIResource), (void**)&otherResource);

        if FAILED(hr)

        {

            // error handling code

            std::cout << "hr:" << hr << std::endl;

        }

        // obtain handle to IDXGIResource object.

        hr = otherResource->GetSharedHandle(&shareHandle_nv12);

        if FAILED(hr)

                {

                    // error handling code

            std::cout << "hr:" << hr << std::endl;

        }

        else {

            std::cout << "hr:" << hr << std::endl;

            std::cout << "handle:" << shareHandle_nv12 << std::endl;

        }

        otherResource->Release();

        if (!shareHandle_nv12)

            return ;

    }

###########################

Thank you.