clFFT offset in cl_mem

[JishinMaster]

Hi,
clBLAS, clBLAST, and standards kernels can take an offset parameter.
I have seen no such thing in the clFFT documentation.
Whenever I want to do an FFT which does not starts at the beginning of an array, I have to copy the cl_mem into another cl_mem, and then back into the first one at the end.

Is there a way to do FFTs with offset?

Many thanks.

[preda]

Maybe you can use clCreateSubBuffer

[hajokirchhoff]

clCreateSubBuffer is not possible here. It has alignment requirements that make it impossible to start at an exact location.

@JishinMaster Your patch would be exactly what I need, but the patch itself is way to big and overly complex. You can clang-tidy over the entire source which really obfuscated your changes. Any chance you can create another patch with just your additions?