While loop for UV position/offset?

Question

Can while loop node be usedd to do something like slope blur or doing random iterations offset like in fxnode? Or it's only for pixel value calculation itself?

For example I am trying to to do small image shift in X/U direction with max blending . Could it be achived with loop node and more than 32 steps ot it's incappable to do such thing by its nature?

ps. Just asked ChatGPT same question . In one reply it says I should use iterations in FXmap node instead for the task , other time it says while loop still can do it but then tells something meaningless with nonexisting nodes and options. I am officially lost now. If while loop can do it could sombody show an example please . I think FX map would do it too slow.

davescm · Accepted Answer

I don't see a reason why it could not be done.
As long as you remember that when using the pixel processor your are always processing the content of the 'resulting pixel' i.e. the result of any blur or movement into it, rather than moving the content of that pixel to another. Once that is grasped, you can then build while loops to examine the contents of pixels around the pixel being processed and assess whether their contents should change that resulting pixel. That processing can also use a second input image to calculate, for example, the slope in the case of a slope blur.

Dave

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