Unhook Recenter

The recenter nodes in this pack install a hook - they patch ComfyUI's sampling functions so every sampler that runs after them recenters the latent channels. That's great until you want a later pass to not be recentered. Unhook Recenter is the counterpart: a tiny latent-in/latent-out node that undoes the patch. Put it in the graph where the effect should stop, and the sampling after it runs clean.

What it does

Where Hook Recenter stores a copy of ComfyUI's original sampling functions and swaps in its own wrapped versions, Unhook Recenter does the reverse: it restores comfy.sample.sample and comfy.sample.sample_custom to the originals. The latent it receives passes through untouched. There are no inputs besides latent and no outputs besides LATENT - it's a pure side-effect node, the closest thing this pack has to a "stop hooking my samplers" button.

Why you'd use it

Two situations, both about the pack's global-hook design:

1. Multi-pass workflows. A first pass gets the recentered, balanced color; a hires-fix second pass should upscale the image without re-applying the color shift. Drop Unhook Recenter on the latent path between the two passes and the second sampler runs with the originals intact.
2. Containment while debugging. The hooks are module-level, so a recenter node anywhere in the workflow affects every sampler downstream - and because they only re-install when their node re-executes, partial reruns can leave a stale hook in place, which is the classic "my colors changed for no reason" bug (a known complaint on the pack's issue tracker). Unhook Recenter gives you a deterministic "hooks are off from here" point in the graph.

It's also the honest companion to the era it came from: in the "complete rewrite" release of the pack, Hook Recenter / Hook Recenter XL installed hooks and Unhook Recenter removed them - a matched pair. The current v2 rewrite replaced the whole mechanism: Diffusion CG sets the effect and Disable CG resets it to zero. If you're on a current install you'll find those two nodes instead.

One caveat

Because it restores the originals captured at import time, Unhook Recenter doesn't just disable the recenter effect - if any other node in your graph had also patched those sampling functions, this node will clobber its patch too. In practice that's a non-issue with this pack, but it's worth knowing before you drop it into a busy custom-sampler workflow.

Install

cd ComfyUI/custom_nodes
git clone https://github.com/Haoming02/comfyui-diffusion-cg

Restart ComfyUI. Zero dependencies, no model downloads. It's a three-second mental model: Hook Recenter on, Unhook Recenter off, and the latent flows through either way.