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Fix repeat of negative prompt #4335

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Merged
patrickvonplaten merged 2 commits into from
Jul 28, 2023
Merged

Fix repeat of negative prompt #4335

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2a427f7
fix repeat of negative prompt
kathath Jul 21, 2023
d63ed14
Merge branch 'main' into sega_fix_negativ_prompt
kathath Jul 28, 2023
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4 changes: 2 additions & 2 deletions src/diffusers/pipelines/semantic_stable_diffusion/pipeline_semantic_stable_diffusion.py
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Original file line number Diff line number Diff line change
Expand Up @@ -442,7 +442,7 @@ def __call__(
if do_classifier_free_guidance:
uncond_tokens: List[str]
if negative_prompt is None:
uncond_tokens = [""]
uncond_tokens = [""] * batch_size
elif type(prompt) is not type(negative_prompt):
raise TypeError(
f"`negative_prompt` should be the same type to `prompt`, but got {type(negative_prompt)} !="
Expand Down Expand Up @@ -471,7 +471,7 @@ def __call__(

# duplicate unconditional embeddings for each generation per prompt, using mps friendly method
seq_len = uncond_embeddings.shape[1]
uncond_embeddings = uncond_embeddings.repeat(batch_size, num_images_per_prompt, 1)
uncond_embeddings = uncond_embeddings.repeat(1, num_images_per_prompt, 1)
uncond_embeddings = uncond_embeddings.view(batch_size * num_images_per_prompt, seq_len, -1)

# For classifier free guidance, we need to do two forward passes.
Expand Down