Merge pull request #12685 from Uminosachi/fix-vae-mismatch

Fix SD VAE switch error after model reuse

modules/sd_models.py

@@ -485,8 +485,12 @@ class SdModelData:
 
         return self.sd_model
 
-    def set_sd_model(self, v):
+    def set_sd_model(self, v, already_loaded=False):
         self.sd_model = v
+        if already_loaded:
+            sd_vae.base_vae = getattr(v, "base_vae", None)
+            sd_vae.loaded_vae_file = getattr(v, "loaded_vae_file", None)
+            sd_vae.checkpoint_info = v.sd_checkpoint_info
 
         try:
             self.loaded_sd_models.remove(v)
@@ -660,13 +664,14 @@ def reuse_model_from_already_loaded(sd_model, checkpoint_info, timer):
         send_model_to_device(already_loaded)
         timer.record("send model to device")
 
-        model_data.set_sd_model(already_loaded)
+        model_data.set_sd_model(already_loaded, already_loaded=True)
 
         if not SkipWritingToConfig.skip:
             shared.opts.data["sd_model_checkpoint"] = already_loaded.sd_checkpoint_info.title
             shared.opts.data["sd_checkpoint_hash"] = already_loaded.sd_checkpoint_info.sha256
 
         print(f"Using already loaded model {already_loaded.sd_checkpoint_info.title}: done in {timer.summary()}")
+        sd_vae.reload_vae_weights(already_loaded)
         return model_data.sd_model
     elif shared.opts.sd_checkpoints_limit > 1 and len(model_data.loaded_sd_models) < shared.opts.sd_checkpoints_limit:
         print(f"Loading model {checkpoint_info.title} ({len(model_data.loaded_sd_models) + 1} out of {shared.opts.sd_checkpoints_limit})")
@@ -678,6 +683,10 @@ def reuse_model_from_already_loaded(sd_model, checkpoint_info, timer):
         sd_model = model_data.loaded_sd_models.pop()
         model_data.sd_model = sd_model
 
+        sd_vae.base_vae = getattr(sd_model, "base_vae", None)
+        sd_vae.loaded_vae_file = getattr(sd_model, "loaded_vae_file", None)
+        sd_vae.checkpoint_info = sd_model.sd_checkpoint_info
+
         print(f"Reusing loaded model {sd_model.sd_checkpoint_info.title} to load {checkpoint_info.title}")
         return sd_model
     else:

modules/sd_vae.py

@@ -192,7 +192,7 @@ def load_vae_dict(filename, map_location):
 
 
 def load_vae(model, vae_file=None, vae_source="from unknown source"):
-    global vae_dict, loaded_vae_file
+    global vae_dict, base_vae, loaded_vae_file
     # save_settings = False
 
     cache_enabled = shared.opts.sd_vae_checkpoint_cache > 0
@@ -230,6 +230,8 @@ def load_vae(model, vae_file=None, vae_source="from unknown source"):
         restore_base_vae(model)
 
     loaded_vae_file = vae_file
+    model.base_vae = base_vae
+    model.loaded_vae_file = loaded_vae_file
 
 
 # don't call this from outside