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Fix moved _expand_mask function #5581

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Merged
merged 2 commits into from
Oct 30, 2023
Merged

Fix moved _expand_mask function #5581

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patrickvonplaten Oct 30, 2023
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patrickvonplaten Oct 30, 2023
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19 changes: 15 additions & 4 deletions src/diffusers/pipelines/blip_diffusion/modeling_ctx_clip.py
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Original file line number Diff line number Diff line change
Expand Up @@ -19,10 +19,21 @@
from transformers import CLIPPreTrainedModel
from transformers.modeling_outputs import BaseModelOutputWithPooling
from transformers.models.clip.configuration_clip import CLIPTextConfig
from transformers.models.clip.modeling_clip import (
CLIPEncoder,
_expand_mask,
)
from transformers.models.clip.modeling_clip import CLIPEncoder


def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None):
"""
Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`.
"""
bsz, src_len = mask.size()
tgt_len = tgt_len if tgt_len is not None else src_len

expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype)

inverted_mask = 1.0 - expanded_mask

return inverted_mask.masked_fill(inverted_mask.to(torch.bool), torch.finfo(dtype).min)


# This is a modified version of the CLIPTextModel from transformers.models.clip.modeling_clip
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