Implement support for t2i style model.

It needs the CLIPVision model so I added CLIPVisionLoader and CLIPVisionEncode.

Put the clip vision model in models/clip_vision
Put the t2i style model in models/style_models

StyleModelLoader to load it, StyleModelApply to apply it
ConditioningAppend to append the conditioning it outputs to a positive one.

comfy/sd.py

@@ -613,11 +613,7 @@ class T2IAdapter:
 def load_t2i_adapter(ckpt_path, model=None):
     t2i_data = load_torch_file(ckpt_path)
     keys = t2i_data.keys()
-    if "style_embedding" in keys:
-        pass
-        # TODO
-        # model_ad = adapter.StyleAdapter(width=1024, context_dim=768, num_head=8, n_layes=3, num_token=8)
-    elif "body.0.in_conv.weight" in keys:
+    if "body.0.in_conv.weight" in keys:
         cin = t2i_data['body.0.in_conv.weight'].shape[1]
         model_ad = adapter.Adapter_light(cin=cin, channels=[320, 640, 1280, 1280], nums_rb=4)
     else:
@@ -626,6 +622,26 @@ def load_t2i_adapter(ckpt_path, model=None):
     model_ad.load_state_dict(t2i_data)
     return T2IAdapter(model_ad, cin // 64)
 
+
+class StyleModel:
+    def __init__(self, model, device="cpu"):
+        self.model = model
+
+    def get_cond(self, input):
+        return self.model(input.last_hidden_state)
+
+
+def load_style_model(ckpt_path):
+    model_data = load_torch_file(ckpt_path)
+    keys = model_data.keys()
+    if "style_embedding" in keys:
+        model = adapter.StyleAdapter(width=1024, context_dim=768, num_head=8, n_layes=3, num_token=8)
+    else:
+        raise Exception("invalid style model {}".format(ckpt_path))
+    model.load_state_dict(model_data)
+    return StyleModel(model)
+
+
 def load_clip(ckpt_path, embedding_directory=None):
     clip_data = load_torch_file(ckpt_path)
     config = {}

comfy_extras/clip_vision.py

@@ -0,0 +1,32 @@
+from transformers import CLIPVisionModel, CLIPVisionConfig, CLIPImageProcessor
+from comfy.sd import load_torch_file
+import os
+
+class ClipVisionModel():
+    def __init__(self):
+        json_config = os.path.join(os.path.dirname(os.path.realpath(__file__)), "clip_vision_config.json")
+        config = CLIPVisionConfig.from_json_file(json_config)
+        self.model = CLIPVisionModel(config)
+        self.processor = CLIPImageProcessor(crop_size=224,
+                                            do_center_crop=True,
+                                            do_convert_rgb=True,
+                                            do_normalize=True,
+                                            do_resize=True,
+                                            image_mean=[ 0.48145466,0.4578275,0.40821073],
+                                            image_std=[0.26862954,0.26130258,0.27577711],
+                                            resample=3, #bicubic
+                                            size=224)
+
+    def load_sd(self, sd):
+        self.model.load_state_dict(sd, strict=False)
+
+    def encode_image(self, image):
+        inputs = self.processor(images=[image[0]], return_tensors="pt")
+        outputs = self.model(**inputs)
+        return outputs
+
+def load(ckpt_path):
+    clip_data = load_torch_file(ckpt_path)
+    clip = ClipVisionModel()
+    clip.load_sd(clip_data)
+    return clip

nodes.py

@@ -18,6 +18,8 @@ import comfy.samplers
 import comfy.sd
 import comfy.utils
 
+import comfy_extras.clip_vision
+
 import model_management
 import importlib
 
@@ -370,6 +372,89 @@ class CLIPLoader:
         clip = comfy.sd.load_clip(ckpt_path=clip_path, embedding_directory=CheckpointLoader.embedding_directory)
         return (clip,)
 
+class CLIPVisionLoader:
+    models_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "models")
+    clip_dir = os.path.join(models_dir, "clip_vision")
+    @classmethod
+    def INPUT_TYPES(s):
+        return {"required": { "clip_name": (filter_files_extensions(recursive_search(s.clip_dir), supported_pt_extensions), ),
+                             }}
+    RETURN_TYPES = ("CLIP_VISION",)
+    FUNCTION = "load_clip"
+
+    CATEGORY = "loaders"
+
+    def load_clip(self, clip_name):
+        clip_path = os.path.join(self.clip_dir, clip_name)
+        clip_vision = comfy_extras.clip_vision.load(clip_path)
+        return (clip_vision,)
+
+class CLIPVisionEncode:
+    @classmethod
+    def INPUT_TYPES(s):
+        return {"required": { "clip_vision": ("CLIP_VISION",),
+                              "image": ("IMAGE",)
+                             }}
+    RETURN_TYPES = ("CLIP_VISION_EMBED",)
+    FUNCTION = "encode"
+
+    CATEGORY = "conditioning"
+
+    def encode(self, clip_vision, image):
+        output = clip_vision.encode_image(image)
+        return (output,)
+
+class StyleModelLoader:
+    models_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "models")
+    style_model_dir = os.path.join(models_dir, "style_models")
+    @classmethod
+    def INPUT_TYPES(s):
+        return {"required": { "style_model_name": (filter_files_extensions(recursive_search(s.style_model_dir), supported_pt_extensions), )}}
+
+    RETURN_TYPES = ("STYLE_MODEL",)
+    FUNCTION = "load_style_model"
+
+    CATEGORY = "loaders"
+
+    def load_style_model(self, style_model_name):
+        style_model_path = os.path.join(self.style_model_dir, style_model_name)
+        style_model = comfy.sd.load_style_model(style_model_path)
+        return (style_model,)
+
+
+class StyleModelApply:
+    @classmethod
+    def INPUT_TYPES(s):
+        return {"required": {"clip_vision_embed": ("CLIP_VISION_EMBED", ),
+                             "style_model": ("STYLE_MODEL", )
+                             }}
+    RETURN_TYPES = ("CONDITIONING",)
+    FUNCTION = "apply_stylemodel"
+
+    CATEGORY = "conditioning"
+
+    def apply_stylemodel(self, clip_vision_embed, style_model):
+        c = style_model.get_cond(clip_vision_embed)
+        return ([[c, {}]], )
+
+
+class ConditioningAppend:
+    @classmethod
+    def INPUT_TYPES(s):
+        return {"required": {"conditioning_to": ("CONDITIONING", ), "conditioning_from": ("CONDITIONING", )}}
+    RETURN_TYPES = ("CONDITIONING",)
+    FUNCTION = "append"
+
+    CATEGORY = "conditioning"
+
+    def append(self, conditioning_to, conditioning_from):
+        c = []
+        to_append = conditioning_from[0][0]
+        for t in conditioning_to:
+            n = [torch.cat((t[0],to_append), dim=1), t[1].copy()]
+            c.append(n)
+        return (c, )
+
 class EmptyLatentImage:
     def __init__(self, device="cpu"):
         self.device = device
@@ -866,6 +951,11 @@ NODE_CLASS_MAPPINGS = {
     "LatentCrop": LatentCrop,
     "LoraLoader": LoraLoader,
     "CLIPLoader": CLIPLoader,
+    "StyleModelLoader": StyleModelLoader,
+    "CLIPVisionLoader": CLIPVisionLoader,
+    "CLIPVisionEncode": CLIPVisionEncode,
+    "StyleModelApply":StyleModelApply,
+    "ConditioningAppend":ConditioningAppend,
     "ControlNetApply": ControlNetApply,
     "ControlNetLoader": ControlNetLoader,
     "DiffControlNetLoader": DiffControlNetLoader,