stable-diffusion-webui/scripts/merge.py

import torch
import tkinter as tk


window = tk.Tk()
window.title(string="Model Merger")
tk.Label(text="Model Merger", font=("Arial", 25)).pack()
tk.Label(text="GUI by antrobot1234").pack()

frame1 = tk.Frame()
frame2 = tk.Frame()
frame3 = tk.Frame()

frameSlider = tk.Frame()
frameButton = tk.Frame()

tk.Label(frame1, text="File 1:").pack(side="left")
file1text = tk.Entry(frame1, width=40)
file1text.pack(side="left")

tk.Label(frame2, text="File 2:").pack(side="left")
file2text = tk.Entry(frame2, width=40)
file2text.pack(side="left")

tk.Label(frame3, text="File Out:").pack(side="left")
fileOtext = tk.Entry(frame3, width=38)
fileOtext.pack(side="left")

tk.Label(frameSlider, text="Weight of file 1").pack(side="left")
scale = tk.Scale(
    frameSlider, from_=0, to=100, orient="horizontal", tickinterval=10, length=450
)
scale.pack(side="left")


goButton = tk.Button(frameButton, text="RUN", height=2, width=20, bg="green")


def merge(file1, file2, out, a):
    alpha = (a) / 100
    if not (file1.endswith(".ckpt")):
        file1 += ".ckpt"
    if not (file2.endswith(".ckpt")):
        file2 += ".ckpt"
    if not (out.endswith(".ckpt")):
        out += ".ckpt"
    # Load Models
    model_0 = torch.load(file1)
    model_1 = torch.load(file2)
    theta_0 = model_0["state_dict"]
    theta_1 = model_1["state_dict"]

    for key in theta_0.keys():
        if "model" in key and key in theta_1:
            theta_0[key] = (alpha) * theta_0[key] + (1 - alpha) * theta_1[key]

    goButton.config(bg="red", text="RUNNING...\n(STAGE 2)")
    window.update()

    for key in theta_1.keys():
        if "model" in key and key not in theta_0:
            theta_0[key] = theta_1[key]
    torch.save(model_0, out)


def handleClick(event):
    goButton.config(bg="red", text="RUNNING...\n(STAGE 1)")
    window.update()
    merge(file1text.get(), file2text.get(), fileOtext.get(), scale.get())
    goButton.config(bg="green", text="RUN")


goButton.pack()
goButton.bind("<Button-1>", handleClick)


frame1.pack()
frame2.pack()
frame3.pack()
frameSlider.pack()
frameButton.pack()

window.mainloop()