| from pathlib import Path
|
| import shutil
|
| import re
|
|
|
| path = Path("models/minimax_h3/pipeline.py")
|
| backup = Path("models/minimax_h3/pipeline.py.sagefix_backup")
|
|
|
| PATCH_MARKER = "# SAGEFIX: Qwen3-VL must use SDPA"
|
|
|
| if not path.exists():
|
| raise FileNotFoundError(
|
| f"Couldn't find:\n {path.resolve()}\n\n"
|
| "Run this script from the Wan2GP root directory."
|
| )
|
|
|
| text = path.read_text(encoding="utf-8")
|
|
|
|
|
|
|
|
|
|
|
| if PATCH_MARKER in text:
|
| print("✅ MiniMax H3 Sage/Qwen fix is already installed.")
|
| raise SystemExit(0)
|
|
|
|
|
|
|
|
|
|
|
|
|
| start = text.find(" def _encode_prompt(self, prompt, presentation):")
|
|
|
| if start == -1:
|
| raise RuntimeError(
|
| "❌ Could not locate _encode_prompt() in pipeline.py.\n"
|
| "Nothing was modified."
|
| )
|
|
|
|
|
| end_match = re.search(r"\n def \w+\(", text[start + 5:])
|
|
|
| if end_match:
|
| end = start + 5 + end_match.start()
|
| else:
|
| end = len(text)
|
|
|
| old_function = text[start:end]
|
|
|
| print("Found current _encode_prompt():")
|
| print("------------------------------------------------------------")
|
| print(old_function)
|
| print("------------------------------------------------------------")
|
|
|
|
|
|
|
|
|
|
|
|
|
| required_bits = [
|
| "if self.fixed_prompt is not None:",
|
| "def encode_fn(prompts):",
|
| "self.text_encoder.encode(",
|
| "self.text_encoder_cache.encode(",
|
| ]
|
|
|
| missing = [x for x in required_bits if x not in old_function]
|
|
|
| if missing:
|
| print("❌ The function structure has changed unexpectedly.")
|
| print("Missing expected pieces:")
|
| for item in missing:
|
| print(f" - {item}")
|
|
|
| raise RuntimeError(
|
| "SageFix aborted safely. Nothing was modified."
|
| )
|
|
|
|
|
|
|
|
|
|
|
|
|
| new_function = ''' def _encode_prompt(self, prompt, presentation):
|
| if self.fixed_prompt is not None:
|
| return self.fixed_prompt.prompt_embeds.to(device=self.device, dtype=self.dtype), self.fixed_prompt.text_token_tags
|
|
|
| # SAGEFIX: Qwen3-VL must use SDPA
|
| #
|
| # Qwen3-VL's variable-length attention can use head dimensions
|
| # unsupported by SageAttention v1. Temporarily switch to SDPA
|
| # during prompt/reference encoding, then restore the selected
|
| # backend for MiniMax H3 denoising.
|
| previous_attention = offload.shared_state.get("_attention", "sdpa")
|
| offload.shared_state["_attention"] = "sdpa"
|
|
|
| try:
|
| def encode_fn(prompts):
|
| return [self.text_encoder.encode(prompts[0], presentation, self.device, self.dtype)]
|
|
|
| cache_key = self._prompt_cache_key(prompt, presentation)
|
| return self.text_encoder_cache.encode(
|
| encode_fn,
|
| prompt,
|
| device=self.device,
|
| cache_keys=cache_key
|
| )[0]
|
|
|
| finally:
|
| offload.shared_state["_attention"] = previous_attention
|
| '''
|
|
|
|
|
|
|
|
|
|
|
|
|
| shutil.copy2(path, backup)
|
| print(f"✅ Backup created/refreshed:\n {backup}")
|
|
|
|
|
|
|
|
|
|
|
|
|
| patched_text = text[:start] + new_function + text[end:]
|
|
|
| path.write_text(patched_text, encoding="utf-8")
|
|
|
| print("✅ Sage/Qwen compatibility patch applied.")
|
|
|
|
|
|
|
|
|
|
|
|
|
| try:
|
| compile(
|
| path.read_text(encoding="utf-8"),
|
| str(path),
|
| "exec"
|
| )
|
| except Exception:
|
| print("❌ Syntax check failed. Restoring backup...")
|
| shutil.copy2(backup, path)
|
| print("✅ Original pipeline.py restored.")
|
| raise
|
|
|
| print("✅ Python syntax check passed.")
|
|
|
|
|
|
|
|
|
|
|
|
|
| patched = path.read_text(encoding="utf-8")
|
| start2 = patched.find(" def _encode_prompt(self, prompt, presentation):")
|
| end_match2 = re.search(r"\n def \w+\(", patched[start2 + 5:])
|
|
|
| if end_match2:
|
| end2 = start2 + 5 + end_match2.start()
|
| else:
|
| end2 = len(patched)
|
|
|
| print()
|
| print("--------------- PATCHED FUNCTION ---------------")
|
| print()
|
| print(patched[start2:end2])
|
| print()
|
| print("------------------------------------------------")
|
| print()
|
| print("🚀 SageFix complete.")
|
| print("Qwen3-VL encoding → SDPA")
|
| print("MiniMax H3 → selected backend (e.g. Sage)") |
