pencil - branch gputest cufft hipfft rocFFT - might be a problem

FFT O(n^2) –> O(n log n)

  1. setup nvidia example
  2. pass buffers in astaroth
  3. api takes vertex buffer fft output to output buffer

  1. cuFFT on simple sine wave and results
  2. cuFFT on simple sine wave using astaroth buffers
  3. ??
  4. profit