Add some new weight patching functionality.

Add a way to reshape lora weights.

Allow weight patches to all weight not just .weight and .bias

Add a way for a lora to set a weight to a specific value.

comfy/lora.py

@@ -49,6 +49,15 @@ def load_lora(lora, to_load):
             dora_scale = lora[dora_scale_name]
             loaded_keys.add(dora_scale_name)
 
+        reshape_name = "{}.reshape_weight".format(x)
+        reshape = None
+        if reshape_name in lora.keys():
+            try:
+                reshape = lora[reshape_name].tolist()
+                loaded_keys.add(reshape_name)
+            except:
+                pass
+
         regular_lora = "{}.lora_up.weight".format(x)
         diffusers_lora = "{}_lora.up.weight".format(x)
         diffusers2_lora = "{}.lora_B.weight".format(x)
@@ -82,7 +91,7 @@ def load_lora(lora, to_load):
             if mid_name is not None and mid_name in lora.keys():
                 mid = lora[mid_name]
                 loaded_keys.add(mid_name)
-            patch_dict[to_load[x]] = ("lora", (lora[A_name], lora[B_name], alpha, mid, dora_scale))
+            patch_dict[to_load[x]] = ("lora", (lora[A_name], lora[B_name], alpha, mid, dora_scale, reshape))
             loaded_keys.add(A_name)
             loaded_keys.add(B_name)
 
@@ -193,6 +202,12 @@ def load_lora(lora, to_load):
             patch_dict["{}.bias".format(to_load[x][:-len(".weight")])] = ("diff", (diff_bias,))
             loaded_keys.add(diff_bias_name)
 
+        set_weight_name = "{}.set_weight".format(x)
+        set_weight = lora.get(set_weight_name, None)
+        if set_weight is not None:
+            patch_dict[to_load[x]] = ("set", (set_weight,))
+            loaded_keys.add(set_weight_name)
+
     for x in lora.keys():
         if x not in loaded_keys:
             logging.warning("lora key not loaded: {}".format(x))
@@ -282,11 +297,14 @@ def model_lora_keys_unet(model, key_map={}):
     sdk = sd.keys()
 
     for k in sdk:
-        if k.startswith("diffusion_model.") and k.endswith(".weight"):
+        if k.startswith("diffusion_model."):
+            if k.endswith(".weight"):
                 key_lora = k[len("diffusion_model."):-len(".weight")].replace(".", "_")
                 key_map["lora_unet_{}".format(key_lora)] = k
                 key_map["lora_prior_unet_{}".format(key_lora)] = k #cascade lora: TODO put lora key prefix in the model config
                 key_map["{}".format(k[:-len(".weight")])] = k #generic lora format without any weird key names
+            else:
+                key_map["{}".format(k)] = k #generic lora format for not .weight without any weird key names
 
     diffusers_keys = comfy.utils.unet_to_diffusers(model.model_config.unet_config)
     for k in diffusers_keys:
@@ -440,10 +458,17 @@ def calculate_weight(patches, weight, key, intermediate_dtype=torch.float32):
                     logging.warning("WARNING SHAPE MISMATCH {} WEIGHT NOT MERGED {} != {}".format(key, diff.shape, weight.shape))
                 else:
                     weight += function(strength * comfy.model_management.cast_to_device(diff, weight.device, weight.dtype))
+        elif patch_type == "set":
+            weight.copy_(v[0])
         elif patch_type == "lora": #lora/locon
             mat1 = comfy.model_management.cast_to_device(v[0], weight.device, intermediate_dtype)
             mat2 = comfy.model_management.cast_to_device(v[1], weight.device, intermediate_dtype)
             dora_scale = v[4]
+            reshape = v[5]
+
+            if reshape is not None:
+                weight = pad_tensor_to_shape(weight, reshape)
+
             if v[2] is not None:
                 alpha = v[2] / mat2.shape[0]
             else:

comfy/model_patcher.py

@@ -373,14 +373,18 @@ class ModelPatcher:
         lowvram_counter = 0
         loading = []
         for n, m in self.model.named_modules():
-            if hasattr(m, "comfy_cast_weights") or hasattr(m, "weight"):
-                loading.append((comfy.model_management.module_size(m), n, m))
+            params = []
+            for name, param in m.named_parameters(recurse=False):
+                params.append(name)
+            if hasattr(m, "comfy_cast_weights") or len(params) > 0:
+                loading.append((comfy.model_management.module_size(m), n, m, params))
 
         load_completely = []
         loading.sort(reverse=True)
         for x in loading:
             n = x[1]
             m = x[2]
+            params = x[3]
             module_mem = x[0]
 
             lowvram_weight = False
@@ -416,22 +420,21 @@ class ModelPatcher:
                     if m.comfy_cast_weights:
                         wipe_lowvram_weight(m)
 
-                if hasattr(m, "weight"):
                 mem_counter += module_mem
-                    load_completely.append((module_mem, n, m))
+                load_completely.append((module_mem, n, m, params))
 
         load_completely.sort(reverse=True)
         for x in load_completely:
             n = x[1]
             m = x[2]
-            weight_key = "{}.weight".format(n)
-            bias_key = "{}.bias".format(n)
+            params = x[3]
             if hasattr(m, "comfy_patched_weights"):
                 if m.comfy_patched_weights == True:
                     continue
 
-            self.patch_weight_to_device(weight_key, device_to=device_to)
-            self.patch_weight_to_device(bias_key, device_to=device_to)
+            for param in params:
+                self.patch_weight_to_device("{}.{}".format(n, param), device_to=device_to)
+
             logging.debug("lowvram: loaded module regularly {} {}".format(n, m))
             m.comfy_patched_weights = True