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SD2.x CLIP support for Loras.

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comfyanonymous 2023-02-05 01:54:09 -05:00
parent 3f3d77a324
commit 678105fade
1 changed files with 35 additions and 11 deletions
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46
comfy/sd.py
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@ -62,6 +62,12 @@ LORA_CLIP_MAP = {
"self_attn.out_proj": "self_attn_out_proj",
}
LORA_CLIP2_MAP = {
"mlp.c_fc": "mlp_fc1",
"mlp.c_proj": "mlp_fc2",
"attn.out_proj": "self_attn_out_proj",
}
LORA_UNET_MAP = {
"proj_in": "proj_in",
"proj_out": "proj_out",
@ -110,7 +116,7 @@ def model_lora_keys(model, key_map={}):
k = "{}.{}.weight".format(tk, c)
if k in sdk:
lora_key = "lora_unet_down_blocks_{}_attentions_{}_{}".format(counter // 2, counter % 2, LORA_UNET_MAP[c])
key_map[lora_key] = k
key_map[lora_key] = (k, 0)
up_counter += 1
if up_counter >= 4:
counter += 1
@ -118,7 +124,7 @@ def model_lora_keys(model, key_map={}):
k = "model.diffusion_model.middle_block.1.{}.weight".format(c)
if k in sdk:
lora_key = "lora_unet_mid_block_attentions_0_{}".format(LORA_UNET_MAP[c])
key_map[lora_key] = k
key_map[lora_key] = (k, 0)
counter = 3
for b in range(12):
tk = "model.diffusion_model.output_blocks.{}.1".format(b)
@ -127,17 +133,30 @@ def model_lora_keys(model, key_map={}):
k = "{}.{}.weight".format(tk, c)
if k in sdk:
lora_key = "lora_unet_up_blocks_{}_attentions_{}_{}".format(counter // 3, counter % 3, LORA_UNET_MAP[c])
key_map[lora_key] = k
key_map[lora_key] = (k, 0)
up_counter += 1
if up_counter >= 4:
counter += 1
counter = 0
text_model_lora_key = "lora_te_text_model_encoder_layers_{}_{}"
for b in range(12):
for c in LORA_CLIP_MAP:
k = "transformer.text_model.encoder.layers.{}.{}.weight".format(b, c)
if k in sdk:
lora_key = "lora_te_text_model_encoder_layers_{}_{}".format(b, LORA_CLIP_MAP[c])
key_map[lora_key] = k
lora_key = text_model_lora_key.format(b, LORA_CLIP_MAP[c])
key_map[lora_key] = (k, 0)
for b in range(24):
for c in LORA_CLIP2_MAP:
k = "model.transformer.resblocks.{}.{}.weight".format(b, c)
if k in sdk:
lora_key = text_model_lora_key.format(b, LORA_CLIP2_MAP[c])
key_map[lora_key] = (k, 0)
k = "model.transformer.resblocks.{}.attn.in_proj_weight".format(b)
if k in sdk:
key_map[text_model_lora_key.format(b, "self_attn_k_proj")] = (k, 0)
key_map[text_model_lora_key.format(b, "self_attn_q_proj")] = (k, 1)
key_map[text_model_lora_key.format(b, "self_attn_v_proj")] = (k, 2)
return key_map
class ModelPatcher:
@ -155,7 +174,7 @@ class ModelPatcher:
p = {}
model_sd = self.model.state_dict()
for k in patches:
if k in model_sd:
if k[0] in model_sd:
p[k] = patches[k]
self.patches += [(strength, p)]
return p.keys()
@ -165,20 +184,25 @@ class ModelPatcher:
for p in self.patches:
for k in p[1]:
v = p[1][k]
if k not in model_sd:
key = k[0]
index = k[1]
if key not in model_sd:
print("could not patch. key doesn't exist in model:", k)
continue
weight = model_sd[k]
if k not in self.backup:
self.backup[k] = weight.clone()
weight = model_sd[key]
if key not in self.backup:
self.backup[key] = weight.clone()
alpha = p[0]
mat1 = v[0]
mat2 = v[1]
if v[2] is not None:
alpha *= v[2] / mat2.shape[0]
weight += (alpha * torch.mm(mat1.flatten(start_dim=1).float(), mat2.flatten(start_dim=1).float())).reshape(weight.shape).type(weight.dtype).to(weight.device)
calc = (alpha * torch.mm(mat1.flatten(start_dim=1).float(), mat2.flatten(start_dim=1).float()))
if len(weight.shape) > 2:
calc = calc.reshape(weight.shape)
weight[index * mat1.shape[0]:(index + 1) * mat1.shape[0]] += calc.type(weight.dtype).to(weight.device)
return self.model
def unpatch_model(self):
model_sd = self.model.state_dict()