117 lines
3.5 KiB
Markdown
117 lines
3.5 KiB
Markdown
# Sigma Schedule Graph Node for ComfyUI & Wan‑Video
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A compact, bidirectional sigma‐schedule editor for diffusion sampling.
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Sketch your noise schedule with just a handful of points. Refine the shape quickly.
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Design your conceptual curve once and use for any number of steps!
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Node will automatically extrapolate schedule to desired step count and save for later.
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---
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## Features
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- 🎨 **Interactive Graph**
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Click & Drag graph points to shape your sigma curve.
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➕ to add new graph point for fine tuning
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➖ to remove one graph point.
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- ✍️ **Textual Workspace**
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The top textarea shows your control‑point y‑values.
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Paste comma lists or full JSON point arrays.
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Textual edits auto‑sync to the graph.
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- 🔄 **Dynamic Extrapolation**
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The bottom preview displays the final sigma list of length=`steps`.
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Change `steps` and immediately see how your low‑point curve scales.
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(obscured by default on-load for compactness)
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- 💾 **Save & Load Presets**
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Toggle save‑mode with the 💾 button, then click a slot to store or recall curves.
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- ℹ️ **Built‑in Help**
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Click the ℹ️ button for quick tips.
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---
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## Preview
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---
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## Installation
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1. **Copy the Folder**
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Place this directory under:
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ComfyUI/custom_nodes/TWanSigmaGraph/
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2. **Restart ComfyUI**
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Relaunch the server or reload your browser.
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3. **Locate the Node**
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Find **Sigma Schedule Graph** under **sampling → custom**.
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---
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## Usage
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1. **Set Steps**
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Adjust the `steps` input—this defines how many sigma values you’ll get.
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2. **Design Your Curve**
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• Edit the top text box or drag points on the graph.
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• The graph and text box stay in sync.
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3. **Adjust Density (Optional)**
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Click **+ / –** to add or remove handles for finer or coarser control.
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4. **View Final Sigmas (Optional)**
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Expand the node to see the full sigma list interpolated to `steps`.
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5. **Save Presets**
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• Click 💾 to enter save mode.
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• Click a slot to store or load a curve.
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6. **Info & Reset**
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Use the ℹ️ popup for instructions.
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To reset, clear the node’s cache in your browser’s `localStorage`.
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7. **Connect to Sampler**
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Plug the `SIGMAS` output into any sampler that accepts custom sigma schedules (e.g. [TWanSigmaSampler](https://github.com/Temult/TWanSigmaSampler)).
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---
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## File Structure
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```
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TWanSigmaGraph/
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├── __init__.py # Node registration & widget directory
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├── TWanSigmaGraph.py # Backend: parse & interpolate points
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└── js/
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└── TWanSigmaGraphWidget.js # Frontend: graph UI, text sync, presets
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```
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---
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## Troubleshooting
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- **Blank Widget on First Load**
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Refresh the page—this alpha‑stage bug will be fixed soon.
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- **Presets Not Saving**
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Check that `localStorage` is enabled for `127.0.0.1` in your browser.
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- **Curve Reverts to Default**
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The node defaults to four points (`1.00, 0.67, 0.33, 0.00`). To clear your custom curve, delete the key `TWanSigmaGraph_last_<node.id>` in dev‑tools → Application → localStorage.
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---
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## Thanks & Credits
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- **Realistic_Studio_930** — Curve design inspiration
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- **huchenlei** — JavaScript guidance
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- **ComfyUI Community** — Testing & feedback
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Licensed under the MIT License. See [LICENSE.txt](LICENSE.txt) for details.
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```
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