diff options
Diffstat (limited to 'modules/hypernetworks/hypernetwork.py')
| -rw-r--r-- | modules/hypernetworks/hypernetwork.py | 96 |
1 files changed, 56 insertions, 40 deletions
diff --git a/modules/hypernetworks/hypernetwork.py b/modules/hypernetworks/hypernetwork.py index 73c1cb80..3274a802 100644 --- a/modules/hypernetworks/hypernetwork.py +++ b/modules/hypernetworks/hypernetwork.py @@ -22,40 +22,57 @@ from modules.textual_inversion.learn_schedule import LearnRateScheduler class HypernetworkModule(torch.nn.Module):
multiplier = 1.0
- def __init__(self, dim, state_dict=None, layer_structure=None, add_layer_norm=False):
+ def __init__(self, dim, state_dict=None, layer_structure=None, add_layer_norm=False, activation_func=None):
super().__init__()
- if layer_structure is not None:
- assert layer_structure[0] == 1, "Multiplier Sequence should start with size 1!"
- assert layer_structure[-1] == 1, "Multiplier Sequence should end with size 1!"
- else:
- layer_structure = parse_layer_structure(dim, state_dict)
+
+ assert layer_structure is not None, "layer_structure must not be None"
+ assert layer_structure[0] == 1, "Multiplier Sequence should start with size 1!"
+ assert layer_structure[-1] == 1, "Multiplier Sequence should end with size 1!"
linears = []
for i in range(len(layer_structure) - 1):
linears.append(torch.nn.Linear(int(dim * layer_structure[i]), int(dim * layer_structure[i+1])))
+
+ if activation_func == "relu":
+ linears.append(torch.nn.ReLU())
+ elif activation_func == "leakyrelu":
+ linears.append(torch.nn.LeakyReLU())
+ elif activation_func == 'linear' or activation_func is None:
+ pass
+ else:
+ raise RuntimeError(f'hypernetwork uses an unsupported activation function: {activation_func}')
+
if add_layer_norm:
linears.append(torch.nn.LayerNorm(int(dim * layer_structure[i+1])))
self.linear = torch.nn.Sequential(*linears)
if state_dict is not None:
- try:
- self.load_state_dict(state_dict)
- except RuntimeError:
- self.try_load_previous(state_dict)
+ self.fix_old_state_dict(state_dict)
+ self.load_state_dict(state_dict)
else:
for layer in self.linear:
- layer.weight.data.normal_(mean = 0.0, std = 0.01)
- layer.bias.data.zero_()
+ if type(layer) == torch.nn.Linear:
+ layer.weight.data.normal_(mean=0.0, std=0.01)
+ layer.bias.data.zero_()
self.to(devices.device)
- def try_load_previous(self, state_dict):
- states = self.state_dict()
- states['linear.0.bias'].copy_(state_dict['linear1.bias'])
- states['linear.0.weight'].copy_(state_dict['linear1.weight'])
- states['linear.1.bias'].copy_(state_dict['linear2.bias'])
- states['linear.1.weight'].copy_(state_dict['linear2.weight'])
+ def fix_old_state_dict(self, state_dict):
+ changes = {
+ 'linear1.bias': 'linear.0.bias',
+ 'linear1.weight': 'linear.0.weight',
+ 'linear2.bias': 'linear.1.bias',
+ 'linear2.weight': 'linear.1.weight',
+ }
+
+ for fr, to in changes.items():
+ x = state_dict.get(fr, None)
+ if x is None:
+ continue
+
+ del state_dict[fr]
+ state_dict[to] = x
def forward(self, x):
return x + self.linear(x) * self.multiplier
@@ -63,7 +80,8 @@ class HypernetworkModule(torch.nn.Module): def trainables(self):
layer_structure = []
for layer in self.linear:
- layer_structure += [layer.weight, layer.bias]
+ if type(layer) == torch.nn.Linear:
+ layer_structure += [layer.weight, layer.bias]
return layer_structure
@@ -71,23 +89,11 @@ def apply_strength(value=None): HypernetworkModule.multiplier = value if value is not None else shared.opts.sd_hypernetwork_strength
-def parse_layer_structure(dim, state_dict):
- i = 0
- layer_structure = [1]
-
- while (key := "linear.{}.weight".format(i)) in state_dict:
- weight = state_dict[key]
- layer_structure.append(len(weight) // dim)
- i += 1
-
- return layer_structure
-
-
class Hypernetwork:
filename = None
name = None
- def __init__(self, name=None, enable_sizes=None, layer_structure=None, add_layer_norm=False):
+ def __init__(self, name=None, enable_sizes=None, layer_structure=None, add_layer_norm=False, activation_func=None):
self.filename = None
self.name = name
self.layers = {}
@@ -96,11 +102,12 @@ class Hypernetwork: self.sd_checkpoint_name = None
self.layer_structure = layer_structure
self.add_layer_norm = add_layer_norm
+ self.activation_func = activation_func
for size in enable_sizes or []:
self.layers[size] = (
- HypernetworkModule(size, None, self.layer_structure, self.add_layer_norm),
- HypernetworkModule(size, None, self.layer_structure, self.add_layer_norm),
+ HypernetworkModule(size, None, self.layer_structure, self.add_layer_norm, self.activation_func),
+ HypernetworkModule(size, None, self.layer_structure, self.add_layer_norm, self.activation_func),
)
def weights(self):
@@ -123,6 +130,7 @@ class Hypernetwork: state_dict['name'] = self.name
state_dict['layer_structure'] = self.layer_structure
state_dict['is_layer_norm'] = self.add_layer_norm
+ state_dict['activation_func'] = self.activation_func
state_dict['sd_checkpoint'] = self.sd_checkpoint
state_dict['sd_checkpoint_name'] = self.sd_checkpoint_name
@@ -135,17 +143,19 @@ class Hypernetwork: state_dict = torch.load(filename, map_location='cpu')
+ self.layer_structure = state_dict.get('layer_structure', [1, 2, 1])
+ self.add_layer_norm = state_dict.get('is_layer_norm', False)
+ self.activation_func = state_dict.get('activation_func', None)
+
for size, sd in state_dict.items():
if type(size) == int:
self.layers[size] = (
- HypernetworkModule(size, sd[0], state_dict["layer_structure"], state_dict["is_layer_norm"]),
- HypernetworkModule(size, sd[1], state_dict["layer_structure"], state_dict["is_layer_norm"]),
+ HypernetworkModule(size, sd[0], self.layer_structure, self.add_layer_norm, self.activation_func),
+ HypernetworkModule(size, sd[1], self.layer_structure, self.add_layer_norm, self.activation_func),
)
self.name = state_dict.get('name', self.name)
self.step = state_dict.get('step', 0)
- self.layer_structure = state_dict.get('layer_structure', None)
- self.add_layer_norm = state_dict.get('is_layer_norm', False)
self.sd_checkpoint = state_dict.get('sd_checkpoint', None)
self.sd_checkpoint_name = state_dict.get('sd_checkpoint_name', None)
@@ -244,7 +254,11 @@ def stack_conds(conds): return torch.stack(conds)
+
def train_hypernetwork(hypernetwork_name, learn_rate, batch_size, data_root, log_directory, training_width, training_height, steps, create_image_every, save_hypernetwork_every, template_file, preview_from_txt2img, preview_prompt, preview_negative_prompt, preview_steps, preview_sampler_index, preview_cfg_scale, preview_seed, preview_width, preview_height):
+ # images allows training previews to have infotext. Importing it at the top causes a circular import problem.
+ from modules import images
+
assert hypernetwork_name, 'hypernetwork not selected'
path = shared.hypernetworks.get(hypernetwork_name, None)
@@ -287,6 +301,7 @@ def train_hypernetwork(hypernetwork_name, learn_rate, batch_size, data_root, log last_saved_file = "<none>"
last_saved_image = "<none>"
+ forced_filename = "<none>"
ititial_step = hypernetwork.step or 0
if ititial_step > steps:
@@ -334,7 +349,8 @@ def train_hypernetwork(hypernetwork_name, learn_rate, batch_size, data_root, log })
if hypernetwork.step > 0 and images_dir is not None and hypernetwork.step % create_image_every == 0:
- last_saved_image = os.path.join(images_dir, f'{hypernetwork_name}-{hypernetwork.step}.png')
+ forced_filename = f'{hypernetwork_name}-{hypernetwork.step}'
+ last_saved_image = os.path.join(images_dir, forced_filename)
optimizer.zero_grad()
shared.sd_model.cond_stage_model.to(devices.device)
@@ -370,7 +386,7 @@ def train_hypernetwork(hypernetwork_name, learn_rate, batch_size, data_root, log if image is not None:
shared.state.current_image = image
- image.save(last_saved_image)
+ last_saved_image, last_text_info = images.save_image(image, images_dir, "", p.seed, p.prompt, shared.opts.samples_format, processed.infotexts[0], p=p, forced_filename=forced_filename)
last_saved_image += f", prompt: {preview_text}"
shared.state.job_no = hypernetwork.step
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