Make texture compression work in release builds when no Direct3d hardware device is found.

[erikdahlstrom]

No description provided.

[robertos]

DeviceResources comes directly from the VS templates, so I didn't want to fork it.
I think the intended way to fix this is to change GLTFTextureCompressionUtils to catch the initialization failure and use the compression method that doesn't use a device:

    bool gpuCompressionSuccessful = false;

    try
    {
        DX::DeviceResources deviceResources;
        deviceResources.CreateDeviceResources();
        ComPtr<ID3D11Device> device(deviceResources.GetD3DDevice());
        DirectX::ScratchImage compressedImage;
    
        if (device != nullptr)
        {
            if (SUCCEEDED(DirectX::Compress(device.Get(), image.GetImages(), image.GetImageCount(), image.GetMetadata(), compressionFormat, DirectX::TEX_COMPRESS_DEFAULT, 0, compressedImage)))
            {
                gpuCompressionSuccessful = true;
            }
        }
    }
    catch (std::exception e) 
    { 
        // Failed to initialize device - GPU is not available 
    }

    if (!gpuCompressionSuccessful)
    {
        // Try software compression
        if (FAILED(DirectX::Compress(image.GetImages(), image.GetImageCount(), image.GetMetadata(), compressionFormat, DirectX::TEX_COMPRESS_DEFAULT, 0, compressedImage)))
        {
            throw GLTFException("Failed to compress data using software compression");
        }
    }

[robertos]

Please consider not changing DeviceResources, but changing our use of it instead

[erikdahlstrom]

Ping, does this look ok?

[robertos]

Thank you so much Erik!