support HunyuanDiT

diffsynth/prompts/sdxl_prompter.py

@@ -0,0 +1,43 @@
+from .utils import Prompter, tokenize_long_prompt
+from transformers import CLIPTokenizer
+from ..models import SDXLTextEncoder, SDXLTextEncoder2
+import torch
+
+
+class SDXLPrompter(Prompter):
+    def __init__(
+        self,
+        tokenizer_path="configs/stable_diffusion/tokenizer",
+        tokenizer_2_path="configs/stable_diffusion_xl/tokenizer_2"
+    ):
+        super().__init__()
+        self.tokenizer = CLIPTokenizer.from_pretrained(tokenizer_path)
+        self.tokenizer_2 = CLIPTokenizer.from_pretrained(tokenizer_2_path)
+    
+    def encode_prompt(
+        self,
+        text_encoder: SDXLTextEncoder,
+        text_encoder_2: SDXLTextEncoder2,
+        prompt,
+        clip_skip=1,
+        clip_skip_2=2,
+        positive=True,
+        device="cuda"
+    ):
+        prompt = self.process_prompt(prompt, positive=positive)
+        
+        # 1
+        input_ids = tokenize_long_prompt(self.tokenizer, prompt).to(device)
+        prompt_emb_1 = text_encoder(input_ids, clip_skip=clip_skip)
+
+        # 2
+        input_ids_2 = tokenize_long_prompt(self.tokenizer_2, prompt).to(device)
+        add_text_embeds, prompt_emb_2 = text_encoder_2(input_ids_2, clip_skip=clip_skip_2)
+
+        # Merge
+        prompt_emb = torch.concatenate([prompt_emb_1, prompt_emb_2], dim=-1)
+
+        # For very long prompt, we only use the first 77 tokens to compute `add_text_embeds`.
+        add_text_embeds = add_text_embeds[0:1]
+        prompt_emb = prompt_emb.reshape((1, prompt_emb.shape[0]*prompt_emb.shape[1], -1))
+        return add_text_embeds, prompt_emb