Add SkipLayerGuidanceWanVideo

__init__.py

@@ -186,6 +186,7 @@ NODE_CONFIG = {
     "ApplyRifleXRoPE_WanVideo": {"class": ApplyRifleXRoPE_WanVideo, "name": "Apply RifleXRoPE WanVideo"},
     "WanVideoTeaCacheKJ": {"class": WanVideoTeaCacheKJ, "name": "WanVideo Tea Cache (native)"},
     "WanVideoEnhanceAVideoKJ": {"class": WanVideoEnhanceAVideoKJ, "name": "WanVideo Enhance A Video (native)"},
+    "SkipLayerGuidanceWanVideo": {"class": SkipLayerGuidanceWanVideo, "name": "Skip Layer Guidance WanVideo"},
     "TimerNodeKJ": {"class": TimerNodeKJ, "name": "Timer Node KJ"},
     "HunyuanVideoEncodeKeyframesToCond": {"class": HunyuanVideoEncodeKeyframesToCond, "name": "HunyuanVideo Encode Keyframes To Cond"},
 

nodes/model_optimization_nodes.py

@@ -791,7 +791,7 @@ def teacache_wanvideo_forward_orig(self, x, t, context, clip_fea=None, freqs=Non
                         out = {}
                         out["img"] = block(args["img"], context=args["txt"], e=args["vec"], freqs=args["pe"])
                         return out
-                    out = blocks_replace[("double_block", i)]({"img": x, "txt": context, "vec": e0, "pe": freqs}, {"original_block": block_wrap})
+                    out = blocks_replace[("double_block", i)]({"img": x, "txt": context, "vec": e0, "pe": freqs}, {"original_block": block_wrap, "transformer_options": transformer_options})
                     x = out["img"]
                 else:
                     x = block(x, e=e0, freqs=freqs, context=context)
@@ -853,7 +853,7 @@ Official recommended values https://github.com/ali-vilab/TeaCache/tree/main/TeaC
 
         if coefficients == "disabled" and rel_l1_thresh > 0.1:
             logging.warning("Threshold value is too high for TeaCache without coefficients, consider using coefficients for better results.")
-        if coefficients != "disabled" and rel_l1_thresh < 0.1:
+        if coefficients != "disabled" and rel_l1_thresh < 0.1 and "1.3B" not in coefficients:
             logging.warning("Threshold value is too low for TeaCache with coefficients, consider using higher threshold value for better results.")
         
         # type_str = str(type(model.model.model_config).__name__)
@@ -914,6 +914,7 @@ Official recommended values https://github.com/ali-vilab/TeaCache/tree/main/TeaC
                         logging.info("\nResetting TeaCache state")
                 
                 current_percent = current_step_index / (len(sigmas) - 1)
+                c["transformer_options"]["current_percent"] = current_percent
                 if start_percent <= current_percent <= end_percent:
                     c["transformer_options"]["teacache_enabled"] = True
                 
@@ -921,8 +922,7 @@ Official recommended values https://github.com/ali-vilab/TeaCache/tree/main/TeaC
                     diffusion_model, 
                     forward_orig=teacache_wanvideo_forward_orig.__get__(diffusion_model, diffusion_model.__class__)
                 )
-                else:
+
-                    context = nullcontext()
                 with context:
                     out = model_function(input, timestep, **c)
                     if current_step_index+1 == last_step and hasattr(diffusion_model, "teacache_state"):
@@ -1073,3 +1073,61 @@ class WanVideoEnhanceAVideoKJ:
             model_clone.add_object_patch(f"diffusion_model.blocks.{idx}.self_attn.forward", self_attn)
             
         return (model_clone,)
+    
+class SkipLayerGuidanceWanVideo:
+    @classmethod
+    def INPUT_TYPES(s):
+        return {"required": {"model": ("MODEL", ),
+                             "blocks": ("STRING", {"default": "10", "multiline": False}),
+                             "start_percent": ("FLOAT", {"default": 0.2, "min": 0.0, "max": 1.0, "step": 0.001}),
+                             "end_percent": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 1.0, "step": 0.001}),
+                            }}
+    RETURN_TYPES = ("MODEL",)
+    FUNCTION = "slg"
+    EXPERIMENTAL = True
+    DESCRIPTION = "Simplified skip layer guidance that only skips the uncond on selected blocks"
+
+    CATEGORY = "advanced/guidance"
+
+    def slg(self, model, start_percent, end_percent, blocks):
+        def skip(args, extra_args):
+            transformer_options = extra_args.get("transformer_options", {})
+            if not transformer_options:
+                raise ValueError("transformer_options not found in extra_args, currrently SkipLayerGuidanceWanVideo only works with TeaCacheKJ")
+            if start_percent <= transformer_options["current_percent"] <= end_percent:
+                if args["img"].shape[0] == 2:
+                    prev_img_uncond = args["img"][0].unsqueeze(0)
+
+                    new_args = {
+                        "img": args["img"][1],
+                        "txt": args["txt"][1],
+                        "vec": args["vec"][1],
+                        "pe": args["pe"][1]
+                    }
+                    block_out = extra_args["original_block"](new_args)
+
+                    out = {
+                        "img": torch.cat([prev_img_uncond, block_out["img"]], dim=0),
+                        "txt": args["txt"],
+                        "vec": args["vec"],
+                        "pe": args["pe"]
+                    }
+                else:
+                    if transformer_options.get("cond_or_uncond") == [0]:
+                        out = extra_args["original_block"](args)
+                    else:
+                        out = args
+            else:
+                out = extra_args["original_block"](args)
+            return out
+
+        block_list = [int(x.strip()) for x in blocks.split(",")]
+        double_layers = [int(i) for i in block_list]
+        logging.info(f"Selected blocks to skip uncond on: {double_layers}")
+
+        m = model.clone()
+
+        for layer in double_layers:
+            m.set_model_patch_replace(skip, "dit", "double_block", layer)        
+
+        return (m, )