diff --git a/a.png b/a.png
index 18b8182d..49702a2e 100644
Binary files a/a.png and b/a.png differ
diff --git a/modules/sd.py b/modules/sd.py
index a329f8ef..14481181 100644
--- a/modules/sd.py
+++ b/modules/sd.py
@@ -1,50 +1,62 @@
-import os
 import random
 import torch
 import numpy as np
 
 from comfy.sd import load_checkpoint_guess_config
 from nodes import VAEDecode, KSamplerAdvanced, EmptyLatentImage, CLIPTextEncode
-from modules.path import modelfile_path
 
 
-xl_base_filename = os.path.join(modelfile_path, 'sd_xl_base_1.0.safetensors')
-xl_refiner_filename = os.path.join(modelfile_path, 'sd_xl_refiner_1.0.safetensors')
-
-xl_base, xl_base_clip, xl_base_vae, xl_base_clipvision = load_checkpoint_guess_config(xl_base_filename)
-del xl_base_clipvision
-
 opCLIPTextEncode = CLIPTextEncode()
 opEmptyLatentImage = EmptyLatentImage()
 opKSamplerAdvanced = KSamplerAdvanced()
 opVAEDecode = VAEDecode()
 
-with torch.no_grad():
-    positive_conditions = opCLIPTextEncode.encode(clip=xl_base_clip, text='a handsome man in forest')[0]
-    negative_conditions = opCLIPTextEncode.encode(clip=xl_base_clip, text='bad, ugly')[0]
 
-    initial_latent_image = opEmptyLatentImage.generate(width=1024, height=1024, batch_size=1)[0]
+class StableDiffusionModel:
+    def __init__(self, unet, vae, clip, clip_vision):
+        self.unet = unet
+        self.vae = vae
+        self.clip = clip
+        self.clip_vision = clip_vision
 
-    samples = opKSamplerAdvanced.sample(
-        add_noise="enable",
-        noise_seed=random.randint(1, 2 ** 64),
-        steps=25,
-        cfg=9,
-        sampler_name="euler",
-        scheduler="normal",
-        start_at_step=0,
-        end_at_step=25,
-        return_with_leftover_noise="enable",
-        model=xl_base,
-        positive=positive_conditions,
-        negative=negative_conditions,
-        latent_image=initial_latent_image,
+
+@torch.no_grad()
+def load_model(ckpt_filename):
+    unet, clip, vae, clip_vision = load_checkpoint_guess_config(ckpt_filename)
+    return StableDiffusionModel(unet=unet, clip=clip, vae=vae, clip_vision=clip_vision)
+
+
+@torch.no_grad()
+def encode_prompt_condition(clip, prompt):
+    return opCLIPTextEncode.encode(clip=clip, text=prompt)[0]
+
+
+@torch.no_grad()
+def decode_vae(vae, latent_image):
+    return opVAEDecode.decode(samples=latent_image, vae=vae)[0]
+
+
+@torch.no_grad()
+def ksample(model, positive_condition, negative_condition, latent_image, add_noise=True, noise_seed=None, steps=25, cfg=9,
+            sampler_name='euler_ancestral', scheduler='normal', start_at_step=None, end_at_step=None,
+            return_with_leftover_noise=False):
+    return opKSamplerAdvanced.sample(
+        add_noise='enable' if add_noise else 'disable',
+        noise_seed=noise_seed if isinstance(noise_seed, int) else random.randint(1, 2 ** 64),
+        steps=steps,
+        cfg=cfg,
+        sampler_name=sampler_name,
+        scheduler=scheduler,
+        start_at_step=0 if start_at_step is None else start_at_step,
+        end_at_step=steps if end_at_step is None else end_at_step,
+        return_with_leftover_noise='enable' if return_with_leftover_noise else 'disable',
+        model=model,
+        positive=positive_condition,
+        negative=negative_condition,
+        latent_image=latent_image,
     )[0]
 
-    vae_decoded = opVAEDecode.decode(samples=samples, vae=xl_base_vae)[0]
 
-    for image in vae_decoded:
-        i = 255. * image.cpu().numpy()
-        img = np.clip(i, 0, 255).astype(np.uint8)
-        import cv2
-        cv2.imwrite('a.png', img[:, :, ::-1])
+@torch.no_grad()
+def image_to_numpy(x):
+    return [np.clip(255. * y.cpu().numpy(), 0, 255).astype(np.uint8) for y in x]