Replace dft in seamless cloning with directx fft [closed]

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Is there an easy way to replace the calculation of the fourier transformation in https://github.com/Itseez/opencv/blob... with the directx fft implementation https://msdn.microsoft.com/en-us/libr... ? I'm using this for a windows store app so I cannot use CUDA or OpenCL. But I can use directx for hardware acceleration. Are there faster ways to solve the poisson equation without using fft? Any suggestions are welcome.