80 lines
3.1 KiB
Python
80 lines
3.1 KiB
Python
from inspect import cleandoc
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from comfy_api.latest import io
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from .helper_functions import checkLazyNew
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from .Stack import MrmthStack
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from .ParseTree import MrmthParseTree
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import copy
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import comfy.utils
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from .modelLikeCommon import calculate_patches_autogrow
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class ModelMathNode(io.ComfyNode):
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"""
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This node enables the use of math expressions on Model weights (state_dict) using Autogrow inputs.
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Functionally acts as a custom model merge.
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"""
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@classmethod
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def define_schema(cls) -> io.Schema:
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return io.Schema(
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node_id="mrmth_ag_ModelMathNode",
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display_name="Model Math",
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category="More math",
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inputs=[
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io.Autogrow.Input(id="V",template=io.Autogrow.TemplatePrefix(io.Model.Input("values"), prefix="V", min=1, max=50)),
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io.Autogrow.Input(id="F", template=io.Autogrow.TemplatePrefix(io.Float.Input("float", default=0.0, optional=True, lazy=True, force_input=True), prefix="F", min=1, max=50)),
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io.MultiType.Input(
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io.String.Input("Expression", default="I0*(1-F0)+I1*F0", multiline=False),
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types=[io.String,MrmthParseTree],
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tooltip="Expression to apply on weights",
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),
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io.Combo.Input(
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id="length_mismatch",
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options=["do nothing","error","tile", "pad"],
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display_name="on size mismatch",
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default="error",
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tooltip="How to handle mismatched layer counts. For models, this usually defaults to broadcast (zero for missing layers)."
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),
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MrmthStack.Input(id="stack", tooltip="Access stack between nodes",optional=True)
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],
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outputs=[
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io.Model.Output(),
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MrmthStack.Output(),
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],
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)
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tooltip = cleandoc(__doc__)
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@classmethod
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def check_lazy_status(cls, Expression, V, F, length_mismatch="tile",stack={}):
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return checkLazyNew(Expression,V,F)
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@classmethod
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def execute(cls, V, F, Expression, length_mismatch="tile",stack={}) -> io.NodeOutput:
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# Determine reference model for cloning
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a = V.get("V0")
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stack = copy.deepcopy(stack) if stack is not None else {}
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if a is None:
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# Try finding first valid model
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for m in V.values():
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if m is not None:
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a = m
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break
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if a is None:
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raise ValueError("At least one input model is required.")
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layer_count = V.get("V0").model.state_dict().__len__() if hasattr(V.get("V0"), "model") and hasattr(V.get("V0").model, "state_dict") else 0
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pbar = comfy.utils.ProgressBar(layer_count)
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aliases = {"a": "V0", "b": "V1", "c": "V2", "d": "V3", "w": "F0", "x": "F1", "y": "F2", "z": "F3"}
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patches = calculate_patches_autogrow(Expression, V=V, F=F,pbar=pbar, mapping=aliases,stack=stack)
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out_model = a.clone()
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if patches:
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out_model.add_patches(patches, 1.0, 1.0)
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return (out_model,stack)
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