How to create dynamic buffer for cuda, opencl, metal?

Hi, everyone!

I am creating a plugin which is gpu-accelerated by referencing SDK_ProcAmp sample plugin.

Currently the plugin is making effects by applying some operator to inFrame and pasting it to outFrame  in GPU.

I'd like to create a buffer frame, which has twice size, between inFrame and outFrame.

How can I do this?

(for example, I used clCreateBuffer in openCL, but it is working only on NVidia and intel HD graphic device and not working on AMD well.)

Does PPre SDK provide this function?

Regards,

Igor.