NukeDiffusion

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NukeDiffusion is an integration tool for Nuke that uses Stable Diffusion to generate AI images from prompts using local Checkpoints.

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<h1>NukeDiffusion - Stable Diffusion for Nuke</h1>

![NukeDiffusion_Logo_v001](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/1eac3b38-17e5-4341-81f3-a63471f04356)

<br>**NukeDiffusion** is an integration tool for Nuke that uses [Stable Diffusion](https://stability.ai/) to generate AI images from prompts using local Checkpoints.<br>
It uses the official library from [Hugging Face](https://huggingface.co), and you don't need to create any account, everything works locally!

✅ Unlimited image generation;
<br>✅ Local Checkpoints (SD and SDXL models);
<br>✅ Main workflows included (**txt2img**, **img2img**, **inpainting**);
<br>✅ No internet connection required;
<br>✅ No sign-in account required;
<br>✅ Free for non-commercial or commercial use;
<br>✅ Available for Windows (still working for Linux and Mac OS);
<br>✅ Compatible with CPU and CUDA.
<br>
<br>
Some limitations you need to consider for this version:

📌 generate single images only (no animation supported);
<br>📌 batch feature for multiple image generation not included.

> [!NOTE]
> _For experienced users, **NukeDifussion** does not support **ControlNet**, **Lora**, **AnimateDiff** and other advanced controls, just the basic setup for image generation._
<br>

---

<h1>Quick Access 🔗</h1>

- [Stable Diffusion Requirements](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#stable-diffusion-requirements-%EF%B8%8F);
- [Python Compatibility](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#python-compatibility-);
- [Workflows](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#workflows-);
- [NukeDiffusion node](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#nukediffusion-node-%EF%B8%8F);
- [NukeDiffusion Terminal](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#nukediffusion-terminal-);
- [Some images generated with NukeDiffusion using different workflows](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#some-images-generated-with-nukediffusion-using-different-workflows-%EF%B8%8F);
- [Waiting time](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#waiting-time-);
- [Installing](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#installing-%EF%B8%8F);
- [Checkpoints](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#checkpoints-);
- [Troubleshooting](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#troubleshooting-%EF%B8%8F);
- [Release Notes](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#release-notes-);
- [Support me](https://github.com/danilodelucio/NukeDiffusion?tab=readme-ov-file#support-me-);

![NukeDiffusion_cover_FHD_v002](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/133fc83c-c61b-49a4-a05a-c81c5008d591)

---

<h1>Stable Diffusion Requirements 🖥️</h1>

For a complete guide to **Stable Diffusion** requirements, I suggest you read [this article](https://www.andyhtu.com/post/system-requirements-your-complete-guide-to-running-stable-diffusion-efficiently).

In summary, the minimum setup required mentioned in the article is:
- **GPU**: GTX 1060 (6GB VRAM);
- **System RAM**: 16GB DDR4.

> [!IMPORTANT]
> _Please note that due to the size of the **SDXL models**, which is around 6GB, certain Checkpoints may not be compatible with this setup._
<br>

<h1>Python Compatibility 🐍</h1>

- **NukeDiffusion Terminal** uses some libraries from Hugging Face (such as Diffusers and PyTorch) and requires Python version **3.8-3.11** installed into your system;

- **NukeDiffusion node** was written in **Python2.7** to make it possible to run in all Nuke versions (hopefully). 😐

<br>

<h1>Workflows 💼</h1>

For now, the included pipeline workflows are:

- **txt2img**: generates an image from a text description (which is also known as a Prompt);
- **img2img**: generates an image passing an initial image (user input) as a starting point for the diffusion process;
- **Inpainting**: replaces or edits specific areas of an image by a provided input mask.
<br>

> [!NOTE]
> _For now, the **inpainting** workflow works only with the Stable Diffusion default model, therefore is not possible to use local Checkpoint._

<br>

<h1>NukeDiffusion node ☢️</h1>

The **NukeDiffusion** node is pretty straightforward. Everything you need is in the same panel, and the UI updates accordingly to your workflow option (**txt2img**, **img2img**, **inpainting**).

![NukeDiffusion_NodeUI_v004](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/e9eef875-99c2-4d26-ae4d-54c477ac1420)

- `Workflow`: select one of the 3 workflow options to work with: **txt2img**, **img2img** or **inpainting**;

- `Checkpoint`: here you can select the **Checkpoint** file available in the directory you specified earlier on `checkpoints_path.json`, or if you are using the default path `./NukeDiffusion/models/checkpoints`;

- `SD Model`: after selecting the **Checkpoint** model, you must indicate its version. By default, if the "XL" or "xl" letters are included in the checkpoint name, it will update the **SD Model** knob to "SDXL", otherwise to "SD";

> [!WARNING]
> _Keep in mind to match the **SD Model** to your selected **Checkpoint**._<br>
> _**SD** and **SDXL** models were pretrained with different resolutions, and they have different pipelines to produce your image._<br>
> _If you provide a **Checkpoint** with the wrong **SD Model**, the **NukeDiffusion Terminal** will close automatically._

- `CUDA`: generate the images using the GPU (graphics card) if it is available on your machine.;
  
- `Positive Prompt`: type everything __you want__ to be generated in your image;

- `Negative Prompt`: type everything __you do not want__ to be generated in your image;

- `Width`: width size of your output image;

- `Height`: height size of your output image;

- `Seed`: If you leave the value as `-1`, your image will be generated randomly. However, if you set any other value, your image will always be the same. It's a good idea to lock the **Seed** and try different settings to see how they affect your image;

- `CFG`: Classifier-Free Guidance scale, which controls how closely the image generation process follows the text prompt.
  The higher the value, the more the image will follow the text input (by default, the maximum value is 10, but you can increase it if you want). With a lower value, the image generation deviates from the text input and becomes more creative;
            <details>
            <summary>cfg examples</summary>
            ![nukediffusion_CFG](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/3e3d87ca-7ef0-4a6d-a1e5-7c154caedf0a)
            </details>

- `Steps`: iterations of sampling and refining for the latent image. With higher steps you can get better images (usually between 20 and 40). Higher than this will probably slow down the image generation and will not have too much difference;
            <details>
            <summary>steps examples</summary>
            ![nukediffusion_Steps](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/c062f9b3-3dd3-431f-99ba-daa6016beba0)
            </details>
            
- `Strength`: parameter that sets the denoising strength from 0 to 1. It is only used for **img2img** and **inpainting** workflows and requires an initial image. Higher values will produce more deviation from the input image (producing more creative output), and lower values will preserve the input image;
            <details>
            <summary>strength examples</summary>
            ![nukediffusion_Strength](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/d4ee1e07-4de1-46b5-a9b2-89c807cb822e)
            </details>
            
- `Mask Opacity`: just for visualization purposes to check the mask input over the image input.

- `Render Input Image`: quickly export the **Input Image** to the `./NukeDiffusion/_input` folder;

- `Render Input Mask`: quickly export the **Input Mask** to the `./NukeDiffusion/_input` folder;
<br>

<h1>NukeDiffusion Terminal 🤖</h1>

After clicking on the **Generate Image** button, it will open the **NukeDiffusion Terminal**, which will load all the information provided in the **NukeDiffusion node**.

![Screenshot 2024-03-03 215656](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/d8d23db9-7ea7-4d16-a51c-12e75c06cef3)

Here you don't have too much to do, just check the information and... wait! 😅

> [!IMPORTANT]
> _While the cursor blinks on the **NukeDiffusion Terminal**, don't close it! Just ignore the `'triton' module error` message and wait for your image to be generated!_
<br>

<h2>Some images generated with NukeDiffusion using different workflows 🖼️</h2>

<details>
<summary><b>txt2img</b></summary>
  
![nukediffusion_txt2img_A](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/5c0ebef6-54fa-469c-aa5e-5b543a0ff058)
![nukediffusion_txt2img_B](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/2a50dd37-6412-471f-8b33-b8e4a54ae7ac)
![nukediffusion_txt2img_C](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/ce2f4bce-c6cd-49a4-a77c-d253424756e6)

</details>

<details>
<summary><b>img2img</b></summary>
  
![nukediffusion_img2img_A2](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/de46b6c8-75c6-449d-9039-242bf9a6fbd4)

![nukediffusion_img2img_B](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/22c678be-c82a-4492-8df9-58e785fe6213)

</details>

<details>
<summary><b>inpainting</b></summary>
  
 ![nukediffusion_inpainting_A](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/7942a7de-a726-49be-bd13-cfbbbc4a6448)

![nukediffusion_inpainting_B](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/66d67187-d900-4be8-b564-108b345cdfe5)

</details>
<br>

<h1>Waiting time ⌛</h1>

This is a subject I need to highlight with you. 🥸

Since we are generating AI images locally, the waiting time depends exclusively on your machine's performance.

Keep in mind that when you run the code for the first time, it will ALWAYS take a while to load the selected Checkpoint into memory. After that, loading the next AI images will take less time.

The image generation itself is faster than the loading checkpoint process. For example, in all my tests I had to wait around 10 and 20 minutes to load the Checkpoint, but it took me 20 seconds to 2-3 minutes to generate the rest of the images (the referred time is per single image, of course).

> [!TIP]
> _To generate faster images, try **SD** models instead of **SDXL**._
<br>

<h1>Installing ⚙️</h1>
Here is the most annoying part... 😣 <br>
But don't give up, it will be worth it! 🤓
<br>
<br>

<br>
Let me break it into a few parts:
<br>
<br>
<details>
  <summary>1. .nuke</summary>
<br>
  
  Click on the green button to download the **NukeDiffusion** and save it into your `.nuke` folder.<br>
  
  ![image](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/a092b5cd-395e-4f73-84ee-dd167b289368)

After extracting the `NukeDiffusion.zip` file, rename the **NukeDiffusion-main** folder to **NukeDiffusion** only (without the "main" word at the end).

![image](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/34abb3c2-2a17-45ee-8932-84d251f70f36)

Open the `init.py` file from the `.nuke` root, then indicate the **NukeDiffusion** folder, like this:
  ```python
import nuke

nuke.pluginAddPath('./NukeDiffusion')
  ```

If you don't have an `init.py` file in your `.nuke` directory, you can create a new text file and paste the code above.
  > _Don't forget to rename it as `init` and change the file extension to `.py`._
<br>
</details>

<details>
<summary>2. _NUKEDIFFUSION_SETUP file</summary>
  <br>

You will find a **_NUKEDIFFUSION_SETUP** file in the `for_windows` or `for_linux_and_mac` folder.

Execute the file related to your operating system:

- In **Windows**, double-click in the `_NUKEDIFFUSION_SETUP.bat` file;
  
  ![2024-03-27 02_25_30-for_windows](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/1486ed76-74bf-4284-b5cc-7ad277163500)

- In **Linux/Mac OS**, open the terminal in the same directory and run `source _NUKEDIFFUSION_SETUP.sh`.
  
  ![Screenshot from 2024-03-27 02-16-25 2](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/fc286093-d6ef-42c7-858a-39a34c432985)

It will create the `nukediffusion-env` folder (the virtual environment), and then all the dependencies will be installed automatically inside this folder.<br>

![image](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/287f835e-5ef7-44d3-9647-7fd9d40c2452)

Follow the instructions until you see the **"The NukeDiffusion setup has been completed!"** message.<br>

![2024-03-22 16_56_11-for_windows](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/c6e3187d-4f9d-4a85-9c81-05e207b38315)

![Screenshot 2024-03-22 165031](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/ea504669-aede-43f9-bad3-1168ea2524bf)

> _Do not close the Terminal before the process is complete... this may take some time!_
<br>

If you are getting `CUDA is not available` as a response, [go to this page](https://developer.nvidia.com/cuda-gpus) from NVidia, download and install the **CUDA Toolkit**, then try this step again until you get CUDA enabled. 🤞

</details>

At the end of this guide, you should see the **NukeDiffusion**'s icon on your left side toolbar when you launch Nuke.<br>

![Screenshot 2024-03-03 145810](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/9e735145-17e2-44a6-98bb-afdb471a15cd)
<br>
<br>

<h1>Checkpoints ✅</h1>

You can use the [CivitAI](https://civitai.com/) website to download Checkpoints and try some different Prompts shared by the community. 😉

> [!IMPORTANT]
> _For now, **NukeDiffusion** only accepts `.safetensors` files._

If you are unsure about which Checkpoint to use, I'm going to list some of my favourites:

<details>
  <summary>SD models</summary>
  
- [Dreamshaper](https://civitai.com/models/4384?modelVersionId=128713);
- [CarDos Anime](https://civitai.com/models/25399/cardos-anime);
- [Ghostmix](https://civitai.com/models/36520/ghostmix);
- [PicX_real](https://civitai.com/models/241415/picxreal);
  
</details>
<details>
  <summary>SDXL models</summary>

- [Dreamshaper XL](https://civitai.com/models/112902/dreamshaper-xl?modelVersionId=126688);
- [Juggernaut XL](https://civitai.com/models/133005/juggernaut-xl?modelVersionId=288982);
- [PhotoVision XL](https://civitai.com/models/125703/protovision-xl-high-fidelity-3d-photorealism-anime-hyperrealism-no-refiner-needed);
- [Animagine XL](https://civitai.com/models/260267/animagine-xl-v3?modelVersionId=293564);
</details>
<br>

After downloading the Checkpoint, you can put them in `.\NukeDiffusion\models\checkpoints`.<br>
If you have another folder where you'd like to use the Checkpoints, you can set a default path in the `checkpoints_path.json` file, located in the `.\NukeDiffusion\config` folder.

![image](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/a885b9d9-d7ff-4611-a061-9acea7aa599a)

> [!CAUTION]
> _Using a single backslash `\` can cause issues. Please use either a forward slash `/` or double backslash `\\`._

> [!IMPORTANT]
> _If the custom Checkpoint does not exist or if you leave the `SD [Default Model]` option enabled, it will download a default model from the [Hugging Face](https://huggingface.co/) repository (this happens for the first time only)._

<br>

<h1>Troubleshooting 🛠️</h1>

<details>
<summary><b>'triton' Error</b></summary>
<br>
  
The error `ModuleNotFoundError: No module named 'triton'` must be ignored!

Triton is an Open-source GPU programming for neural networks, and what I found regarding this issue, is that Triton module is not available for Windows.
However, this error does not affect the image generation, so just simply ignore it!
 
 ![triton error](https://github.com/danilodelucio/NukeDiffusion/assets/47226196/06a3a408-681a-451a-8e1c-ce354e0a4e2d)

> _I didn't hide this issue so you can check on the Terminal if you get another import module error._
</details>

<br>

If you have feedback, suggestions, or feature requests, please visit the [Discussions](https://github.com/danilodelucio/NukeDiffusion/discussions) page and create a **New Discussion**.<br>
For bugs, please go to the [Issues](https://github.com/danilodelucio/NukeDiffusion/issues) page and create a **New Issue**.
<br>
<br>

<h1>Release Notes 📢</h1>

**v01.1**:
- Simplified setup installation;
- CPU support;
- Export buttons for Input Image and Input Mask;
- "Input Format" button to adjust the image resolution.;
- Countdown feature for closing the Terminal window.

# Support me! ☕

![Supporters Page](https://danilodelucio.com/wp-content/uploads/2025/12/supporter-badges.jpg)

## Enjoying this tool?
Support me with a coffee on my [Supporters](https://www.danilodelucio.com/supporters) page — get a badge and join the wall of supporters! 😎

You can also ⭐ _star this repository_ ⭐ — it helps a lot with visibility and motivates me to keep developing tools for VFX.

Sharing this project or sending me a positive message would help me in the same way.

---
Special thanks to **Gustavo Goncalves** and **Leticia Matsuoka** for testing this tool and providing valuable feedback for improvement. Also, thanks to **Juliana Chen** for her support and encouragement.

<h1>Cheers! 🥂</h1>

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