Add API of bypass forward module

comfy/weight_adapter/__init__.py

@@ -5,6 +5,11 @@ from .lokr import LoKrAdapter
 from .glora import GLoRAAdapter
 from .oft import OFTAdapter
 from .boft import BOFTAdapter
+from .bypass import (
+    BypassInjectionManager,
+    BypassForwardHook,
+    create_bypass_injections_from_patches,
+)
 
 
 adapters: list[type[WeightAdapterBase]] = [
@@ -31,4 +36,7 @@ __all__ = [
     "WeightAdapterTrainBase",
     "adapters",
     "adapter_maps",
+    "BypassInjectionManager",
+    "BypassForwardHook",
+    "create_bypass_injections_from_patches",
 ] + [a.__name__ for a in adapters]

comfy/weight_adapter/base.py

@@ -1,4 +1,4 @@
-from typing import Optional
+from typing import Callable, Optional
 
 import torch
 import torch.nn as nn
@@ -7,12 +7,35 @@ import comfy.model_management
 
 
 class WeightAdapterBase:
+    """
+    Base class for weight adapters (LoRA, LoHa, LoKr, OFT, etc.)
+
+    Bypass Mode:
+        All adapters follow the pattern: bypass(f)(x) = g(f(x) + h(x))
+
+        - h(x): Additive component (LoRA path). Returns delta to add to base output.
+        - g(y): Output transformation. Applied after base + h(x).
+
+        For LoRA/LoHa/LoKr: g = identity, h = adapter(x)
+        For OFT/BOFT: g = transform, h = 0
+    """
+
     name: str
     loaded_keys: set[str]
     weights: list[torch.Tensor]
 
+    # Attributes set by bypass system
+    multiplier: float = 1.0
+    shape: tuple = None  # (out_features, in_features) or (out_ch, in_ch, *kernel)
+
     @classmethod
-    def load(cls, x: str, lora: dict[str, torch.Tensor], alpha: float, dora_scale: torch.Tensor) -> Optional["WeightAdapterBase"]:
+    def load(
+        cls,
+        x: str,
+        lora: dict[str, torch.Tensor],
+        alpha: float,
+        dora_scale: torch.Tensor,
+    ) -> Optional["WeightAdapterBase"]:
         raise NotImplementedError
 
     def to_train(self) -> "WeightAdapterTrainBase":
@@ -39,18 +62,202 @@ class WeightAdapterBase:
     ):
         raise NotImplementedError
 
+    # ===== Bypass Mode Methods =====
+    #
+    # IMPORTANT: Bypass mode is designed for quantized models where original weights
+    # may not be accessible in a usable format. Therefore, h() and bypass_forward()
+    # do NOT take org_weight as a parameter. All necessary information (out_channels,
+    # in_channels, conv params, etc.) is provided via attributes set by BypassForwardHook.
+
+    def h(self, x: torch.Tensor, base_out: torch.Tensor) -> torch.Tensor:
+        """
+        Additive bypass component: h(x, base_out)
+
+        Computes the adapter's contribution to be added to base forward output.
+        For adapters that only transform output (OFT/BOFT), returns zeros.
+
+        Note:
+            This method does NOT access original model weights. Bypass mode is
+            designed for quantized models where weights may not be in a usable format.
+            All shape info comes from module attributes set by BypassForwardHook.
+
+        Args:
+            x: Input tensor
+            base_out: Output from base forward f(x), can be used for shape reference
+
+        Returns:
+            Delta tensor to add to base output. Shape matches base output.
+
+        Reference: LyCORIS LoConModule.bypass_forward_diff
+        """
+        # Default: no additive component (for OFT/BOFT)
+        # Simply return zeros matching base_out shape
+        return torch.zeros_like(base_out)
+
+    def g(self, y: torch.Tensor) -> torch.Tensor:
+        """
+        Output transformation: g(y)
+
+        Applied after base forward + h(x). For most adapters this is identity.
+        OFT/BOFT override this to apply orthogonal transformation.
+
+        Args:
+            y: Combined output (base + h(x))
+
+        Returns:
+            Transformed output
+
+        Reference: LyCORIS OFTModule applies orthogonal transform here
+        """
+        # Default: identity (for LoRA/LoHa/LoKr)
+        return y
+
+    def bypass_forward(
+        self,
+        org_forward: Callable,
+        x: torch.Tensor,
+        *args,
+        **kwargs,
+    ) -> torch.Tensor:
+        """
+        Full bypass forward: g(f(x) + h(x, f(x)))
+
+        Note:
+            This method does NOT take org_weight/org_bias parameters. Bypass mode
+            is designed for quantized models where weights may not be accessible.
+            The original forward function handles weight access internally.
+
+        Args:
+            org_forward: Original module forward function
+            x: Input tensor
+            *args, **kwargs: Additional arguments for org_forward
+
+        Returns:
+            Output with adapter applied in bypass mode
+
+        Reference: LyCORIS LoConModule.bypass_forward
+        """
+        # Base forward: f(x)
+        base_out = org_forward(x, *args, **kwargs)
+
+        # Additive component: h(x, base_out) - base_out provided for shape reference
+        h_out = self.h(x, base_out)
+
+        # Output transformation: g(base + h)
+        return self.g(base_out + h_out)
+
 
 class WeightAdapterTrainBase(nn.Module):
-    # We follow the scheme of PR #7032
+    """
+    Base class for trainable weight adapters (LoRA, LoHa, LoKr, OFT, etc.)
+
+    Bypass Mode:
+        All adapters follow the pattern: bypass(f)(x) = g(f(x) + h(x))
+
+        - h(x): Additive component (LoRA path). Returns delta to add to base output.
+        - g(y): Output transformation. Applied after base + h(x).
+
+        For LoRA/LoHa/LoKr: g = identity, h = adapter(x)
+        For OFT: g = transform, h = 0
+
+    Note:
+        Unlike WeightAdapterBase, TrainBase classes have simplified weight formats
+        with fewer branches (e.g., LoKr only has w1/w2, not w1_a/w1_b decomposition).
+
+    We follow the scheme of PR #7032
+    """
+
+    # Attributes set by bypass system (BypassForwardHook)
+    # These are set before h()/g()/bypass_forward() are called
+    multiplier: float = 1.0
+    is_conv: bool = False
+    conv_dim: int = 0  # 0=linear, 1=conv1d, 2=conv2d, 3=conv3d
+    kw_dict: dict = {}  # Conv kwargs: stride, padding, dilation, groups
+    kernel_size: tuple = ()
+    in_channels: int = None
+    out_channels: int = None
+
     def __init__(self):
         super().__init__()
 
     def __call__(self, w):
         """
-        w: The original weight tensor to be modified.
+        Weight modification mode: returns modified weight.
+
+        Args:
+            w: The original weight tensor to be modified.
+
+        Returns:
+            Modified weight tensor.
         """
         raise NotImplementedError
 
+    # ===== Bypass Mode Methods =====
+
+    def h(self, x: torch.Tensor, base_out: torch.Tensor) -> torch.Tensor:
+        """
+        Additive bypass component: h(x, base_out)
+
+        Computes the adapter's contribution to be added to base forward output.
+        For adapters that only transform output (OFT), returns zeros.
+
+        Args:
+            x: Input tensor
+            base_out: Output from base forward f(x), can be used for shape reference
+
+        Returns:
+            Delta tensor to add to base output. Shape matches base output.
+
+        Subclasses should override this method.
+        """
+        raise NotImplementedError(
+            f"{self.__class__.__name__}.h() not implemented. "
+            "Subclasses must implement h() for bypass mode."
+        )
+
+    def g(self, y: torch.Tensor) -> torch.Tensor:
+        """
+        Output transformation: g(y)
+
+        Applied after base forward + h(x). For most adapters this is identity.
+        OFT overrides this to apply orthogonal transformation.
+
+        Args:
+            y: Combined output (base + h(x))
+
+        Returns:
+            Transformed output
+        """
+        # Default: identity (for LoRA/LoHa/LoKr)
+        return y
+
+    def bypass_forward(
+        self,
+        org_forward: Callable,
+        x: torch.Tensor,
+        *args,
+        **kwargs,
+    ) -> torch.Tensor:
+        """
+        Full bypass forward: g(f(x) + h(x, f(x)))
+
+        Args:
+            org_forward: Original module forward function
+            x: Input tensor
+            *args, **kwargs: Additional arguments for org_forward
+
+        Returns:
+            Output with adapter applied in bypass mode
+        """
+        # Base forward: f(x)
+        base_out = org_forward(x, *args, **kwargs)
+
+        # Additive component: h(x, base_out) - base_out provided for shape reference
+        h_out = self.h(x, base_out)
+
+        # Output transformation: g(base + h)
+        return self.g(base_out + h_out)
+
     def passive_memory_usage(self):
         raise NotImplementedError("passive_memory_usage is not implemented")
 
@@ -59,8 +266,12 @@ class WeightAdapterTrainBase(nn.Module):
         return self.passive_memory_usage()
 
 
-def weight_decompose(dora_scale, weight, lora_diff, alpha, strength, intermediate_dtype, function):
+def weight_decompose(
-    dora_scale = comfy.model_management.cast_to_device(dora_scale, weight.device, intermediate_dtype)
+    dora_scale, weight, lora_diff, alpha, strength, intermediate_dtype, function
+):
+    dora_scale = comfy.model_management.cast_to_device(
+        dora_scale, weight.device, intermediate_dtype
+    )
     lora_diff *= alpha
     weight_calc = weight + function(lora_diff).type(weight.dtype)
 
@@ -106,10 +317,14 @@ def pad_tensor_to_shape(tensor: torch.Tensor, new_shape: list[int]) -> torch.Ten
         the original tensor will be truncated in that dimension.
     """
     if any([new_shape[i] < tensor.shape[i] for i in range(len(new_shape))]):
-        raise ValueError("The new shape must be larger than the original tensor in all dimensions")
+        raise ValueError(
+            "The new shape must be larger than the original tensor in all dimensions"
+        )
 
     if len(new_shape) != len(tensor.shape):
-        raise ValueError("The new shape must have the same number of dimensions as the original tensor")
+        raise ValueError(
+            "The new shape must have the same number of dimensions as the original tensor"
+        )
 
     # Create a new tensor filled with zeros
     padded_tensor = torch.zeros(new_shape, dtype=tensor.dtype, device=tensor.device)

comfy/weight_adapter/bypass.py

@@ -0,0 +1,437 @@
+"""
+Bypass mode implementation for weight adapters (LoRA, LoKr, LoHa, etc.)
+
+Bypass mode applies adapters during forward pass without modifying base weights:
+    bypass(f)(x) = g(f(x) + h(x))
+
+Where:
+    - f(x): Original layer forward
+    - h(x): Additive component from adapter (LoRA path)
+    - g(y): Output transformation (identity for most adapters)
+
+This is useful for:
+    - Training with gradient checkpointing
+    - Avoiding weight modifications when weights are offloaded
+    - Supporting multiple adapters with different strengths dynamically
+"""
+
+import logging
+from typing import Optional, Union
+
+import torch
+import torch.nn as nn
+
+from .base import WeightAdapterBase, WeightAdapterTrainBase
+from comfy.patcher_extension import PatcherInjection
+
+# Type alias for adapters that support bypass mode
+BypassAdapter = Union[WeightAdapterBase, WeightAdapterTrainBase]
+
+
+def get_module_type_info(module: nn.Module) -> dict:
+    """
+    Determine module type and extract conv parameters from module class.
+
+    This is more reliable than checking weight.ndim, especially for quantized layers
+    where weight shape might be different.
+
+    Returns:
+        dict with keys: is_conv, conv_dim, stride, padding, dilation, groups
+    """
+    info = {
+        "is_conv": False,
+        "conv_dim": 0,
+        "stride": (1,),
+        "padding": (0,),
+        "dilation": (1,),
+        "groups": 1,
+        "kernel_size": (1,),
+        "in_channels": None,
+        "out_channels": None,
+    }
+
+    # Determine conv type
+    if isinstance(module, nn.Conv1d):
+        info["is_conv"] = True
+        info["conv_dim"] = 1
+    elif isinstance(module, nn.Conv2d):
+        info["is_conv"] = True
+        info["conv_dim"] = 2
+    elif isinstance(module, nn.Conv3d):
+        info["is_conv"] = True
+        info["conv_dim"] = 3
+    elif isinstance(module, nn.Linear):
+        info["is_conv"] = False
+        info["conv_dim"] = 0
+    else:
+        # Try to infer from class name for custom/quantized layers
+        class_name = type(module).__name__.lower()
+        if "conv3d" in class_name:
+            info["is_conv"] = True
+            info["conv_dim"] = 3
+        elif "conv2d" in class_name:
+            info["is_conv"] = True
+            info["conv_dim"] = 2
+        elif "conv1d" in class_name:
+            info["is_conv"] = True
+            info["conv_dim"] = 1
+        elif "conv" in class_name:
+            info["is_conv"] = True
+            info["conv_dim"] = 2
+
+    # Extract conv parameters if it's a conv layer
+    if info["is_conv"]:
+        # Try to get stride, padding, dilation, groups, kernel_size from module
+        info["stride"] = getattr(module, "stride", (1,) * info["conv_dim"])
+        info["padding"] = getattr(module, "padding", (0,) * info["conv_dim"])
+        info["dilation"] = getattr(module, "dilation", (1,) * info["conv_dim"])
+        info["groups"] = getattr(module, "groups", 1)
+        info["kernel_size"] = getattr(module, "kernel_size", (1,) * info["conv_dim"])
+        info["in_channels"] = getattr(module, "in_channels", None)
+        info["out_channels"] = getattr(module, "out_channels", None)
+
+        # Ensure they're tuples
+        if isinstance(info["stride"], int):
+            info["stride"] = (info["stride"],) * info["conv_dim"]
+        if isinstance(info["padding"], int):
+            info["padding"] = (info["padding"],) * info["conv_dim"]
+        if isinstance(info["dilation"], int):
+            info["dilation"] = (info["dilation"],) * info["conv_dim"]
+        if isinstance(info["kernel_size"], int):
+            info["kernel_size"] = (info["kernel_size"],) * info["conv_dim"]
+
+    return info
+
+
+class BypassForwardHook:
+    """
+    Hook that wraps a layer's forward to apply adapter in bypass mode.
+
+    Stores the original forward and replaces it with bypass version.
+
+    Supports both:
+        - WeightAdapterBase: Inference adapters (uses self.weights tuple)
+        - WeightAdapterTrainBase: Training adapters (nn.Module with parameters)
+    """
+
+    def __init__(
+        self,
+        module: nn.Module,
+        adapter: BypassAdapter,
+        multiplier: float = 1.0,
+    ):
+        self.module = module
+        self.adapter = adapter
+        self.multiplier = multiplier
+        self.original_forward = None
+
+        # Determine layer type and conv params from module class (works for quantized layers)
+        module_info = get_module_type_info(module)
+
+        # Set multiplier and layer type info on adapter for use in h()
+        adapter.multiplier = multiplier
+        adapter.is_conv = module_info["is_conv"]
+        adapter.conv_dim = module_info["conv_dim"]
+        adapter.kernel_size = module_info["kernel_size"]
+        adapter.in_channels = module_info["in_channels"]
+        adapter.out_channels = module_info["out_channels"]
+        # Store kw_dict for conv operations (like LyCORIS extra_args)
+        if module_info["is_conv"]:
+            adapter.kw_dict = {
+                "stride": module_info["stride"],
+                "padding": module_info["padding"],
+                "dilation": module_info["dilation"],
+                "groups": module_info["groups"],
+            }
+        else:
+            adapter.kw_dict = {}
+
+    def _bypass_forward(self, x: torch.Tensor, *args, **kwargs) -> torch.Tensor:
+        """Bypass forward: uses adapter's bypass_forward or default g(f(x) + h(x))
+
+        Note:
+            Bypass mode does NOT access original model weights (org_weight).
+            This is intentional - bypass mode is designed for quantized models
+            where weights may not be in a usable format. All necessary shape
+            information is provided via adapter attributes set during inject().
+        """
+        # Check if adapter has custom bypass_forward (e.g., GLoRA)
+        adapter_bypass = getattr(self.adapter, "bypass_forward", None)
+        if adapter_bypass is not None:
+            # Check if it's overridden (not the base class default)
+            # Need to check both base classes since adapter could be either type
+            adapter_type = type(self.adapter)
+            is_default_bypass = (
+                adapter_type.bypass_forward is WeightAdapterBase.bypass_forward
+                or adapter_type.bypass_forward is WeightAdapterTrainBase.bypass_forward
+            )
+            if not is_default_bypass:
+                return adapter_bypass(self.original_forward, x, *args, **kwargs)
+
+        # Default bypass: g(f(x) + h(x, f(x)))
+        base_out = self.original_forward(x, *args, **kwargs)
+        h_out = self.adapter.h(x, base_out)
+        return self.adapter.g(base_out + h_out)
+
+    def inject(self):
+        """Replace module forward with bypass version."""
+        if self.original_forward is not None:
+            logging.debug(
+                f"[BypassHook] Already injected for {type(self.module).__name__}"
+            )
+            return  # Already injected
+
+        # Move adapter weights to module's device to avoid CPU-GPU transfer on every forward
+        device = None
+        dtype = None
+        if hasattr(self.module, "weight") and self.module.weight is not None:
+            device = self.module.weight.device
+            dtype = self.module.weight.dtype
+        elif hasattr(self.module, "W_q"):  # Quantized layers might use different attr
+            device = self.module.W_q.device
+            dtype = self.module.W_q.dtype
+
+        if device is not None:
+            self._move_adapter_weights_to_device(device, dtype)
+
+        self.original_forward = self.module.forward
+        self.module.forward = self._bypass_forward
+        logging.debug(
+            f"[BypassHook] Injected bypass forward for {type(self.module).__name__} (adapter={type(self.adapter).__name__})"
+        )
+
+    def _move_adapter_weights_to_device(self, device, dtype=None):
+        """Move adapter weights to specified device to avoid per-forward transfers.
+
+        Handles both:
+            - WeightAdapterBase: has self.weights tuple of tensors
+            - WeightAdapterTrainBase: nn.Module with parameters, uses .to() method
+        """
+        adapter = self.adapter
+
+        # Check if adapter is an nn.Module (WeightAdapterTrainBase)
+        if isinstance(adapter, nn.Module):
+            # In training mode we don't touch dtype as trainer will handle it
+            adapter.to(device=device)
+            logging.debug(
+                f"[BypassHook] Moved training adapter (nn.Module) to {device}"
+            )
+            return
+
+        # WeightAdapterBase: handle self.weights tuple
+        if not hasattr(adapter, "weights") or adapter.weights is None:
+            return
+
+        weights = adapter.weights
+        if isinstance(weights, (list, tuple)):
+            new_weights = []
+            for w in weights:
+                if isinstance(w, torch.Tensor):
+                    if dtype is not None:
+                        new_weights.append(w.to(device=device, dtype=dtype))
+                    else:
+                        new_weights.append(w.to(device=device))
+                else:
+                    new_weights.append(w)
+            adapter.weights = (
+                tuple(new_weights) if isinstance(weights, tuple) else new_weights
+            )
+        elif isinstance(weights, torch.Tensor):
+            if dtype is not None:
+                adapter.weights = weights.to(device=device, dtype=dtype)
+            else:
+                adapter.weights = weights.to(device=device)
+
+        logging.debug(f"[BypassHook] Moved adapter weights to {device}")
+
+    def eject(self):
+        """Restore original module forward."""
+        if self.original_forward is None:
+            logging.debug(f"[BypassHook] Not injected for {type(self.module).__name__}")
+            return  # Not injected
+
+        self.module.forward = self.original_forward
+        self.original_forward = None
+        logging.debug(
+            f"[BypassHook] Ejected bypass forward for {type(self.module).__name__}"
+        )
+
+
+class BypassInjectionManager:
+    """
+    Manages bypass mode injection for a collection of adapters.
+
+    Creates PatcherInjection objects that can be used with ModelPatcher.
+
+    Supports both inference adapters (WeightAdapterBase) and training adapters
+    (WeightAdapterTrainBase).
+
+    Usage:
+        manager = BypassInjectionManager()
+        manager.add_adapter("model.layers.0.self_attn.q_proj", lora_adapter, strength=0.8)
+        manager.add_adapter("model.layers.0.self_attn.k_proj", lora_adapter, strength=0.8)
+
+        injections = manager.create_injections(model)
+        model_patcher.set_injections("bypass_lora", injections)
+    """
+
+    def __init__(self):
+        self.adapters: dict[str, tuple[BypassAdapter, float]] = {}
+        self.hooks: list[BypassForwardHook] = []
+
+    def add_adapter(
+        self,
+        key: str,
+        adapter: BypassAdapter,
+        strength: float = 1.0,
+    ):
+        """
+        Add an adapter for a specific weight key.
+
+        Args:
+            key: Weight key (e.g., "model.layers.0.self_attn.q_proj.weight")
+            adapter: The weight adapter (LoRAAdapter, LoKrAdapter, etc.)
+            strength: Multiplier for adapter effect
+        """
+        # Remove .weight suffix if present for module lookup
+        module_key = key
+        if module_key.endswith(".weight"):
+            module_key = module_key[:-7]
+            logging.debug(
+                f"[BypassManager] Stripped .weight suffix: {key} -> {module_key}"
+            )
+
+        self.adapters[module_key] = (adapter, strength)
+        logging.debug(
+            f"[BypassManager] Added adapter: {module_key} (type={type(adapter).__name__}, strength={strength})"
+        )
+
+    def clear_adapters(self):
+        """Remove all adapters."""
+        self.adapters.clear()
+
+    def _get_module_by_key(self, model: nn.Module, key: str) -> Optional[nn.Module]:
+        """Get a submodule by dot-separated key."""
+        parts = key.split(".")
+        module = model
+        try:
+            for i, part in enumerate(parts):
+                if part.isdigit():
+                    module = module[int(part)]
+                else:
+                    module = getattr(module, part)
+            logging.debug(
+                f"[BypassManager] Found module for key {key}: {type(module).__name__}"
+            )
+            return module
+        except (AttributeError, IndexError, KeyError) as e:
+            logging.error(f"[BypassManager] Failed to find module for key {key}: {e}")
+            logging.error(
+                f"[BypassManager] Failed at part index {i}, part={part}, current module type={type(module).__name__}"
+            )
+            return None
+
+    def create_injections(self, model: nn.Module) -> list[PatcherInjection]:
+        """
+        Create PatcherInjection objects for all registered adapters.
+
+        Args:
+            model: The model to inject into (e.g., model_patcher.model)
+
+        Returns:
+            List of PatcherInjection objects to use with model_patcher.set_injections()
+        """
+        self.hooks.clear()
+
+        logging.debug(
+            f"[BypassManager] create_injections called with {len(self.adapters)} adapters"
+        )
+        logging.debug(f"[BypassManager] Model type: {type(model).__name__}")
+
+        for key, (adapter, strength) in self.adapters.items():
+            logging.debug(f"[BypassManager] Looking for module: {key}")
+            module = self._get_module_by_key(model, key)
+
+            if module is None:
+                logging.warning(f"[BypassManager] Module not found for key {key}")
+                continue
+
+            if not hasattr(module, "weight"):
+                logging.warning(
+                    f"[BypassManager] Module {key} has no weight attribute (type={type(module).__name__})"
+                )
+                continue
+
+            logging.debug(
+                f"[BypassManager] Creating hook for {key} (module type={type(module).__name__}, weight shape={module.weight.shape})"
+            )
+            hook = BypassForwardHook(module, adapter, multiplier=strength)
+            self.hooks.append(hook)
+
+        logging.debug(f"[BypassManager] Created {len(self.hooks)} hooks")
+
+        # Create single injection that manages all hooks
+        def inject_all(model_patcher):
+            logging.debug(
+                f"[BypassManager] inject_all called, injecting {len(self.hooks)} hooks"
+            )
+            for hook in self.hooks:
+                hook.inject()
+                logging.debug(
+                    f"[BypassManager] Injected hook for {type(hook.module).__name__}"
+                )
+
+        def eject_all(model_patcher):
+            logging.debug(
+                f"[BypassManager] eject_all called, ejecting {len(self.hooks)} hooks"
+            )
+            for hook in self.hooks:
+                hook.eject()
+
+        return [PatcherInjection(inject=inject_all, eject=eject_all)]
+
+    def get_hook_count(self) -> int:
+        """Return number of hooks that will be/are injected."""
+        return len(self.hooks)
+
+
+def create_bypass_injections_from_patches(
+    model: nn.Module,
+    patches: dict,
+    strength: float = 1.0,
+) -> list[PatcherInjection]:
+    """
+    Convenience function to create bypass injections from a patches dict.
+
+    This is useful when you have patches in the format used by model_patcher.add_patches()
+    and want to apply them in bypass mode instead.
+
+    Args:
+        model: The model to inject into
+        patches: Dict mapping weight keys to adapter data
+        strength: Global strength multiplier
+
+    Returns:
+        List of PatcherInjection objects
+    """
+    manager = BypassInjectionManager()
+
+    for key, patch_list in patches.items():
+        if not patch_list:
+            continue
+
+        # patches format: list of (strength_patch, patch_data, strength_model, offset, function)
+        for patch in patch_list:
+            patch_strength, patch_data, strength_model, offset, function = patch
+
+            # patch_data should be a WeightAdapterBase/WeightAdapterTrainBase or tuple
+            if isinstance(patch_data, (WeightAdapterBase, WeightAdapterTrainBase)):
+                adapter = patch_data
+            else:
+                # Skip non-adapter patches
+                continue
+
+            combined_strength = strength * patch_strength
+            manager.add_adapter(key, adapter, strength=combined_strength)
+
+    return manager.create_injections(model)