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

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李欣

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Aug 3, 2021, 9:17:57 AMAug 3
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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.
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