Spaces:
Running
on
Zero
Running
on
Zero
File size: 16,477 Bytes
ff715ca |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 |
from typing import Any, Dict, Optional, Tuple
import torch
import torch.fft as fft
from diffusers.utils import is_torch_version
from diffusers.models.unet_2d_condition import logger as logger2d
from diffusers.models.unet_3d_condition import logger as logger3d
def isinstance_str(x: object, cls_name: str):
"""
Checks whether x has any class *named* cls_name in its ancestry.
Doesn't require access to the class's implementation.
Useful for patching!
"""
for _cls in x.__class__.__mro__:
if _cls.__name__ == cls_name:
return True
return False
def Fourier_filter(x_in, threshold, scale):
"""
Updated Fourier filter based on:
https://github.com/huggingface/diffusers/pull/5164#issuecomment-1732638706
"""
x = x_in
B, C, H, W = x.shape
# Non-power of 2 images must be float32
if (W & (W - 1)) != 0 or (H & (H - 1)) != 0:
x = x.to(dtype=torch.float32)
# FFT
x_freq = fft.fftn(x, dim=(-2, -1))
x_freq = fft.fftshift(x_freq, dim=(-2, -1))
B, C, H, W = x_freq.shape
mask = torch.ones((B, C, H, W), device=x.device)
crow, ccol = H // 2, W // 2
mask[..., crow - threshold : crow + threshold, ccol - threshold : ccol + threshold] = scale
x_freq = x_freq * mask
# IFFT
x_freq = fft.ifftshift(x_freq, dim=(-2, -1))
x_filtered = fft.ifftn(x_freq, dim=(-2, -1)).real
return x_filtered.to(dtype=x_in.dtype)
def register_upblock2d(model):
"""
Register UpBlock2D for UNet2DCondition.
"""
def up_forward(self):
def forward(
hidden_states,
res_hidden_states_tuple,
temb=None,
upsample_size=None
):
logger2d.debug(f"in upblock2d, hidden states shape: {hidden_states.shape}")
for resnet in self.resnets:
# pop res hidden states
res_hidden_states = res_hidden_states_tuple[-1]
res_hidden_states_tuple = res_hidden_states_tuple[:-1]
hidden_states = torch.cat([hidden_states, res_hidden_states], dim=1)
if self.training and self.gradient_checkpointing:
def create_custom_forward(module):
def custom_forward(*inputs):
return module(*inputs)
return custom_forward
if is_torch_version(">=", "1.11.0"):
hidden_states = torch.utils.checkpoint.checkpoint(
create_custom_forward(resnet), hidden_states, temb, use_reentrant=False
)
else:
hidden_states = torch.utils.checkpoint.checkpoint(
create_custom_forward(resnet), hidden_states, temb
)
else:
hidden_states = resnet(hidden_states, temb)
if self.upsamplers is not None:
for upsampler in self.upsamplers:
hidden_states = upsampler(hidden_states, upsample_size)
return hidden_states
return forward
for i, upsample_block in enumerate(model.unet.up_blocks):
if isinstance_str(upsample_block, "UpBlock2D"):
upsample_block.forward = up_forward(upsample_block)
def register_free_upblock2d(model, b1=1.2, b2=1.4, s1=0.9, s2=0.2):
"""
Register UpBlock2D with FreeU for UNet2DCondition.
"""
def up_forward(self):
def forward(
hidden_states,
res_hidden_states_tuple,
temb=None,
upsample_size=None
):
logger2d.debug(f"in free upblock2d, hidden states shape: {hidden_states.shape}")
for resnet in self.resnets:
# pop res hidden states
res_hidden_states = res_hidden_states_tuple[-1]
res_hidden_states_tuple = res_hidden_states_tuple[:-1]
# --------------- FreeU code -----------------------
# Only operate on the first two stages
if hidden_states.shape[1] == 1280:
hidden_mean = hidden_states.mean(1).unsqueeze(1)
B = hidden_mean.shape[0]
hidden_max, _ = torch.max(hidden_mean.view(B, -1), dim=-1, keepdim=True)
hidden_min, _ = torch.min(hidden_mean.view(B, -1), dim=-1, keepdim=True)
hidden_mean = (hidden_mean - hidden_min.unsqueeze(2).unsqueeze(3)) / (hidden_max - hidden_min).unsqueeze(2).unsqueeze(3)
hidden_states[:,:640] = hidden_states[:,:640] * ((self.b1 - 1 ) * hidden_mean + 1)
#hidden_states[:,:640] = hidden_states[:,:640] * self.b1
res_hidden_states = Fourier_filter(res_hidden_states, threshold=1, scale=self.s1)
if hidden_states.shape[1] == 640:
hidden_mean = hidden_states.mean(1).unsqueeze(1)
B = hidden_mean.shape[0]
hidden_max, _ = torch.max(hidden_mean.view(B, -1), dim=-1, keepdim=True)
hidden_min, _ = torch.min(hidden_mean.view(B, -1), dim=-1, keepdim=True)
hidden_mean = (hidden_mean - hidden_min.unsqueeze(2).unsqueeze(3)) / (hidden_max - hidden_min).unsqueeze(2).unsqueeze(3)
hidden_states[:,:320] = hidden_states[:,:320] * ((self.b2 - 1 ) * hidden_mean + 1)
#hidden_states[:,:320] = hidden_states[:,:320] * self.b2
res_hidden_states = Fourier_filter(res_hidden_states, threshold=1, scale=self.s2)
# ---------------------------------------------------------
hidden_states = torch.cat([hidden_states, res_hidden_states], dim=1)
if self.training and self.gradient_checkpointing:
def create_custom_forward(module):
def custom_forward(*inputs):
return module(*inputs)
return custom_forward
if is_torch_version(">=", "1.11.0"):
hidden_states = torch.utils.checkpoint.checkpoint(
create_custom_forward(resnet), hidden_states, temb, use_reentrant=False
)
else:
hidden_states = torch.utils.checkpoint.checkpoint(
create_custom_forward(resnet), hidden_states, temb
)
else:
hidden_states = resnet(hidden_states, temb)
if self.upsamplers is not None:
for upsampler in self.upsamplers:
hidden_states = upsampler(hidden_states, upsample_size)
return hidden_states
return forward
for i, upsample_block in enumerate(model.unet.up_blocks):
if isinstance_str(upsample_block, "UpBlock2D"):
upsample_block.forward = up_forward(upsample_block)
setattr(upsample_block, 'b1', b1)
setattr(upsample_block, 'b2', b2)
setattr(upsample_block, 's1', s1)
setattr(upsample_block, 's2', s2)
def register_crossattn_upblock2d(model):
"""
Register CrossAttn UpBlock2D for UNet2DCondition.
"""
def up_forward(self):
def forward(
hidden_states: torch.FloatTensor,
res_hidden_states_tuple: Tuple[torch.FloatTensor, ...],
temb: Optional[torch.FloatTensor] = None,
encoder_hidden_states: Optional[torch.FloatTensor] = None,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
upsample_size: Optional[int] = None,
attention_mask: Optional[torch.FloatTensor] = None,
encoder_attention_mask: Optional[torch.FloatTensor] = None,
):
logger2d.debug(f"in crossatten upblock2d, hidden states shape: {hidden_states.shape}")
#lora_scale = cross_attention_kwargs.get("scale", 1.0) if cross_attention_kwargs is not None else 1.0
for resnet, attn in zip(self.resnets, self.attentions):
# pop res hidden states
res_hidden_states = res_hidden_states_tuple[-1]
res_hidden_states_tuple = res_hidden_states_tuple[:-1]
hidden_states = torch.cat([hidden_states, res_hidden_states], dim=1)
if self.training and self.gradient_checkpointing:
def create_custom_forward(module, return_dict=None):
def custom_forward(*inputs):
if return_dict is not None:
return module(*inputs, return_dict=return_dict)
else:
return module(*inputs)
return custom_forward
ckpt_kwargs: Dict[str, Any] = {"use_reentrant": False} if is_torch_version(">=", "1.11.0") else {}
hidden_states = torch.utils.checkpoint.checkpoint(
create_custom_forward(resnet),
hidden_states,
temb,
**ckpt_kwargs,
)
hidden_states = torch.utils.checkpoint.checkpoint(
create_custom_forward(attn, return_dict=False),
hidden_states,
encoder_hidden_states,
None, # timestep
None, # class_labels
cross_attention_kwargs,
attention_mask,
encoder_attention_mask,
**ckpt_kwargs,
)[0]
else:
hidden_states = resnet(hidden_states, temb)
hidden_states = attn(
hidden_states,
encoder_hidden_states=encoder_hidden_states,
cross_attention_kwargs=cross_attention_kwargs,
attention_mask=attention_mask,
encoder_attention_mask=encoder_attention_mask,
return_dict=False,
)[0]
if self.upsamplers is not None:
for upsampler in self.upsamplers:
hidden_states = upsampler(hidden_states, upsample_size)
return hidden_states
return forward
for i, upsample_block in enumerate(model.unet.up_blocks):
if isinstance_str(upsample_block, "CrossAttnUpBlock2D"):
upsample_block.forward = up_forward(upsample_block)
def register_free_crossattn_upblock2d(model, b1=1.2, b2=1.4, s1=0.9, s2=0.2):
"""
Register CrossAttn UpBlock2D with FreeU for UNet2DCondition.
"""
def up_forward(self):
def forward(
hidden_states: torch.FloatTensor,
res_hidden_states_tuple: Tuple[torch.FloatTensor, ...],
temb: Optional[torch.FloatTensor] = None,
encoder_hidden_states: Optional[torch.FloatTensor] = None,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
upsample_size: Optional[int] = None,
attention_mask: Optional[torch.FloatTensor] = None,
encoder_attention_mask: Optional[torch.FloatTensor] = None,
):
logger2d.debug(f"in free crossatten upblock2d, hidden states shape: {hidden_states.shape}")
#lora_scale = cross_attention_kwargs.get("scale", 1.0) if cross_attention_kwargs is not None else 1.0
for resnet, attn in zip(self.resnets, self.attentions):
# pop res hidden states
res_hidden_states = res_hidden_states_tuple[-1]
res_hidden_states_tuple = res_hidden_states_tuple[:-1]
# --------------- FreeU code -----------------------
# Only operate on the first two stages
if hidden_states.shape[1] == 1280:
hidden_mean = hidden_states.mean(1).unsqueeze(1)
B = hidden_mean.shape[0]
hidden_max, _ = torch.max(hidden_mean.view(B, -1), dim=-1, keepdim=True)
hidden_min, _ = torch.min(hidden_mean.view(B, -1), dim=-1, keepdim=True)
hidden_mean = (hidden_mean - hidden_min.unsqueeze(2).unsqueeze(3)) / (hidden_max - hidden_min).unsqueeze(2).unsqueeze(3)
hidden_states[:,:640] = hidden_states[:,:640] * ((self.b1 - 1 ) * hidden_mean + 1)
#hidden_states[:,:640] = hidden_states[:,:640] * self.b1
res_hidden_states = Fourier_filter(res_hidden_states, threshold=1, scale=self.s1)
if hidden_states.shape[1] == 640:
hidden_mean = hidden_states.mean(1).unsqueeze(1)
B = hidden_mean.shape[0]
hidden_max, _ = torch.max(hidden_mean.view(B, -1), dim=-1, keepdim=True)
hidden_min, _ = torch.min(hidden_mean.view(B, -1), dim=-1, keepdim=True)
hidden_mean = (hidden_mean - hidden_min.unsqueeze(2).unsqueeze(3)) / (hidden_max - hidden_min).unsqueeze(2).unsqueeze(3)
hidden_states[:,:320] = hidden_states[:,:320] * ((self.b2 - 1 ) * hidden_mean + 1)
#hidden_states[:,:320] = hidden_states[:,:320] * self.b2
res_hidden_states = Fourier_filter(res_hidden_states, threshold=1, scale=self.s2)
# ---------------------------------------------------------
hidden_states = torch.cat([hidden_states, res_hidden_states], dim=1)
if self.training and self.gradient_checkpointing:
def create_custom_forward(module, return_dict=None):
def custom_forward(*inputs):
if return_dict is not None:
return module(*inputs, return_dict=return_dict)
else:
return module(*inputs)
return custom_forward
ckpt_kwargs: Dict[str, Any] = {"use_reentrant": False} if is_torch_version(">=", "1.11.0") else {}
hidden_states = torch.utils.checkpoint.checkpoint(
create_custom_forward(resnet),
hidden_states,
temb,
**ckpt_kwargs,
)
hidden_states = torch.utils.checkpoint.checkpoint(
create_custom_forward(attn, return_dict=False),
hidden_states,
encoder_hidden_states,
None, # timestep
None, # class_labels
cross_attention_kwargs,
attention_mask,
encoder_attention_mask,
**ckpt_kwargs,
)[0]
else:
hidden_states = resnet(hidden_states, temb)
hidden_states = attn(
hidden_states,
encoder_hidden_states=encoder_hidden_states,
cross_attention_kwargs=cross_attention_kwargs,
attention_mask=attention_mask,
encoder_attention_mask=encoder_attention_mask,
return_dict=False,
)[0]
if self.upsamplers is not None:
for upsampler in self.upsamplers:
hidden_states = upsampler(hidden_states, upsample_size)
return hidden_states
return forward
for i, upsample_block in enumerate(model.unet.up_blocks):
if isinstance_str(upsample_block, "CrossAttnUpBlock2D"):
upsample_block.forward = up_forward(upsample_block)
setattr(upsample_block, 'b1', b1)
setattr(upsample_block, 'b2', b2)
setattr(upsample_block, 's1', s1)
setattr(upsample_block, 's2', s2)
def apply_freeu(pipe, b1=1.0, b2=1.0, s1=1.0, s2=1.0):
register_free_upblock2d(pipe, b1, b2, s1, s2)
register_free_crossattn_upblock2d(pipe, b1, b2, s1, s2) |