【Fix】Nachaku Dit Api Arg Error

[qzzz95]

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[gemini-code-assist]

Summary of Changes

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This pull request implements a crucial fix for an API argument error within the Qwen-Image DiT Nunchaku model. By introducing a new optional parameter to the forward method, the change ensures proper handling of modulate_index, thereby enhancing the stability and correctness of the model's API.

Highlights

• API Argument Fix: An optional argument modulate_index has been added to the forward method signature in qwen_image_dit_nunchaku.py to resolve a reported API argument error.

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[gemini-code-assist]

Code Review

This pull request adds the modulate_index parameter to the forward method of QwenImageTransformerBlockNunchaku to fix an API argument error. However, the added parameter is not used within the function, making the fix incomplete and potentially leading to incorrect behavior for features that depend on it. I've left a comment with details on how to complete the implementation.

[gemini-code-assist]

While adding modulate_index fixes the API signature mismatch, it is currently unused within the forward method. This parameter is crucial for features like zero_cond_t, and ignoring it can lead to incorrect behavior.

To properly fix this, modulate_index should be passed to the _modulate calls within this method. This will also require updating _modulate to accept and handle this new parameter, likely by adapting the logic from the base QwenImageTransformerBlock's _modulate method.