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hub / github.com/OpenImagingLab/FlashVSR / torch_forward

Method torch_forward

diffsynth/models/attention.py:37–62  ·  view source on GitHub ↗
(self, hidden_states, encoder_hidden_states=None, attn_mask=None, ipadapter_kwargs=None, qkv_preprocessor=None)

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35 return hidden_states
36
37 def torch_forward(self, hidden_states, encoder_hidden_states=None, attn_mask=None, ipadapter_kwargs=None, qkv_preprocessor=None):
38 if encoder_hidden_states is None:
39 encoder_hidden_states = hidden_states
40
41 batch_size = encoder_hidden_states.shape[0]
42
43 q = self.to_q(hidden_states)
44 k = self.to_k(encoder_hidden_states)
45 v = self.to_v(encoder_hidden_states)
46
47 q = q.view(batch_size, -1, self.num_heads, self.head_dim).transpose(1, 2)
48 k = k.view(batch_size, -1, self.num_heads, self.head_dim).transpose(1, 2)
49 v = v.view(batch_size, -1, self.num_heads, self.head_dim).transpose(1, 2)
50
51 if qkv_preprocessor is not None:
52 q, k, v = qkv_preprocessor(q, k, v)
53
54 hidden_states = torch.nn.functional.scaled_dot_product_attention(q, k, v, attn_mask=attn_mask)
55 if ipadapter_kwargs is not None:
56 hidden_states = self.interact_with_ipadapter(hidden_states, q, **ipadapter_kwargs)
57 hidden_states = hidden_states.transpose(1, 2).reshape(batch_size, -1, self.num_heads * self.head_dim)
58 hidden_states = hidden_states.to(q.dtype)
59
60 hidden_states = self.to_out(hidden_states)
61
62 return hidden_states
63
64 def xformers_forward(self, hidden_states, encoder_hidden_states=None, attn_mask=None):
65 if encoder_hidden_states is None:

Callers 1

forwardMethod · 0.95

Calls 2

toMethod · 0.45

Tested by

no test coverage detected