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Python

# (c) TenserTensor <tenser.tensor@proton.me> || Apache-2.0 (apache.org/licenses/LICENSE-2.0)
# Contains slightly modified code by City96
# (c) City96 || Apache-2.0 (apache.org/licenses/LICENSE-2.0)
# Modified by TenserTensor
# (c) TenserTensor || Apache-2.0 (apache.org/licenses/LICENSE-2.0)
import collections
import inspect
import os
from typing import override
import torch
from torch import bfloat16, float16, float32, float8_e4m3fn, float8_e5m2, device, tensor
import folder_paths
from comfy import sd, model_management, utils, model_sampling, model_patcher, lora, float
from comfy_api.latest import io, ComfyExtension
from nodes import VAELoader, MAX_RESOLUTION
from .gguf.dequant import is_quantized, is_torch_compatible
from .gguf.loader import gguf_sd_loader, gguf_clip_loader
from .gguf.ops import GGMLOps, move_patch_to_device
CATEGORY = "TenserTensor/Loaders"
TORCH_DEVICES = ["default", "cpu"]
TORCH_DEVICE_CPU = "cpu"
DTYPES = {"bfloat16": bfloat16, "float16": float16, "float32": float32}
VIDEO_TAES = ["taehv", "lighttaew2_2", "lighttaew2_1", "lighttaehy1_5"]
IMAGE_TAES = ["taesd", "taesdxl", "taesd3", "taef1"]
MIN_SAMPLING_RES = 256
MAX_SAMPLING_RES = 4096
def get_checkpoint_files():
return folder_paths.get_filename_list("checkpoints")
def get_diffusion_models_files():
return folder_paths.get_filename_list("diffusion_models")
def get_gguf_diffusion_models_files():
update_folder_names_and_paths("diffusion_models_gguf", "diffusion_models", {".gguf"})
return [f for f in folder_paths.get_filename_list("diffusion_models_gguf")]
def get_text_encoder_files():
return folder_paths.get_filename_list("text_encoders")
def get_gguf_text_encoder_files():
update_folder_names_and_paths("text_encoders_gguf", "text_encoders", {'.gguf', '.pt', '.pth', '.safetensors'})
return [x for x in folder_paths.get_filename_list("text_encoders_gguf")]
def get_vae_files():
return VAELoader.vae_list(VAELoader)
def get_lora_files():
return ["None"] + folder_paths.get_filename_list("loras")
def load_checkpoint(checkpoint):
ckpt_path = folder_paths.get_full_path_or_raise("checkpoints", checkpoint)
return sd.load_checkpoint_guess_config(
ckpt_path, output_vae=False, output_clip=False,
embedding_directory=folder_paths.get_folder_paths("embeddings")
)[0]
def load_sdxl_clip(clip_l, clip_g, clip_device):
clip_type = getattr(sd.CLIPType, "SDXL", sd.CLIPType.STABLE_DIFFUSION)
clip_l_path = folder_paths.get_full_path_or_raise("text_encoders", clip_l)
clip_g_path = folder_paths.get_full_path_or_raise("text_encoders", clip_g)
model_options = {}
if clip_device == TORCH_DEVICE_CPU:
model_options["load_device"] = model_options["offload_device"] = device(TORCH_DEVICE_CPU)
return sd.load_clip(
ckpt_paths=[clip_l_path, clip_g_path],
embedding_directory=folder_paths.get_folder_paths("embeddings"),
clip_type=clip_type,
model_options=model_options
)
def load_vae(vae_name, vae_device="default", vae_dtype="bfloat16"):
dtype = DTYPES[vae_dtype]
torch_device = model_management.get_torch_device() if vae_device == "default" else device(vae_device)
metadata = None
if vae_name == "pixel_space":
state_dict = {"pixel_space_vae": tensor(1.0)}
elif vae_name in IMAGE_TAES:
state_dict = VAELoader.load_taesd(vae_name)
else:
vae_path = (
folder_paths.get_full_path_or_raise("vae_approx", vae_name)
if os.path.splitext(vae_name)[0] in VIDEO_TAES
else folder_paths.get_full_path_or_raise("vae", vae_name)
)
state_dict, metadata = utils.load_torch_file(vae_path, return_metadata=True)
vae = sd.VAE(sd=state_dict, device=torch_device, dtype=dtype, metadata=metadata)
vae.throw_exception_if_invalid()
return vae
def load_sdxl_pipeline(cls, apply_loras, **kwargs):
model = load_checkpoint(kwargs.get("primary_ckpt"))
secondary_ckpt = kwargs.get("secondary_ckpt")
if secondary_ckpt != "None":
primary_weight = kwargs.get("primary_weight")
secondary_model = load_checkpoint(secondary_ckpt)
model = model.clone()
key_patches = secondary_model.get_key_patches("diffusion_model.")
for key in key_patches:
model.add_patches({key: key_patches[key]}, 1.0 - primary_weight, primary_weight)
clip_l, clip_g, clip_device = (
kwargs.get("clip_l"),
kwargs.get("clip_g"),
kwargs.get("clip_device"),
)
clip = load_sdxl_clip(clip_l, clip_g, clip_device)
if apply_loras:
loras = [
(kwargs.get("lora_name_1"), kwargs.get("strength_1"), 'loaded_lora_1'),
(kwargs.get("lora_name_2"), kwargs.get("strength_2"), 'loaded_lora_2'),
(kwargs.get("lora_name_3"), kwargs.get("strength_3"), 'loaded_lora_3'),
(kwargs.get("lora_name_4"), kwargs.get("strength_4"), 'loaded_lora_4'),
]
for name, strength, attr in loras:
if name != "None" and strength != 0:
cached = getattr(cls, attr)
model, clip, lora = apply_lora(cached, model, clip, name, strength)
setattr(cls, attr, lora)
vae = load_vae(kwargs.get("vae_name"), kwargs.get("vae_device"), kwargs.get("vae_dtype"))
return model, clip, vae
class TT_SdxlModelsLoaderNode(io.ComfyNode):
@classmethod
def define_schema(cls) -> io.Schema:
return io.Schema(
node_id="TT_SdxlModelsLoaderNode",
display_name="TT SDXL Models Loader",
category=CATEGORY,
description="",
inputs=[
io.Combo.Input("primary_ckpt", options=get_checkpoint_files()),
io.Combo.Input("secondary_ckpt", options=["None"] + get_checkpoint_files()),
io.Float.Input("primary_weight", default=1.0, min=0.0, max=1.0, step=0.01),
io.Combo.Input("clip_l", options=get_text_encoder_files()),
io.Combo.Input("clip_g", options=get_text_encoder_files()),
io.Combo.Input("clip_device", options=TORCH_DEVICES, default="default"),
io.Combo.Input("vae_name", options=get_vae_files()),
],
outputs=[
io.Model.Output("MODEL"),
io.Clip.Output("CLIP"),
io.Vae.Output("VAE"),
]
)
@classmethod
def execute(cls, **kwargs) -> io.NodeOutput:
model, clip, vae = load_sdxl_pipeline(cls, apply_loras=False, **kwargs)
return io.NodeOutput(model, clip, vae)
def apply_lora(loaded_lora, model, clip, lora_name, strength):
if loaded_lora is None:
lora_path = folder_paths.get_full_path_or_raise("loras", lora_name)
lora = utils.load_torch_file(lora_path, safe_load=True)
else:
lora = loaded_lora
patched_model, patched_clip = sd.load_lora_for_models(model, clip, lora, strength, strength)
return (patched_model, patched_clip, lora)
class TT_SdxlModelsLoaderAdvancedNode(io.ComfyNode):
loaded_lora_1 = None
loaded_lora_2 = None
loaded_lora_3 = None
loaded_lora_4 = None
@classmethod
def define_schema(cls) -> io.Schema:
return io.Schema(
node_id="TT_SdxlModelsLoaderAdvancedNode",
display_name="TT SDXL Models Loader (Advanced)",
category=CATEGORY,
description="",
inputs=[
io.Combo.Input("primary_ckpt", options=get_checkpoint_files()),
io.Combo.Input("secondary_ckpt", options=["None"] + get_checkpoint_files()),
io.Float.Input("primary_weight", default=1.0, min=0.0, max=1.0, step=0.01),
io.Combo.Input("clip_l", options=get_text_encoder_files()),
io.Combo.Input("clip_g", options=get_text_encoder_files()),
io.Combo.Input("clip_device", options=TORCH_DEVICES, default="default"),
io.Combo.Input("lora_name_1", options=get_lora_files()),
io.Float.Input("strength_1", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_2", options=get_lora_files()),
io.Float.Input("strength_2", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_3", options=get_lora_files()),
io.Float.Input("strength_3", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_4", options=get_lora_files()),
io.Float.Input("strength_4", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("vae_name", options=get_vae_files()),
io.Combo.Input("vae_device", options=TORCH_DEVICES, default="default"),
io.Combo.Input("vae_dtype", options=list(DTYPES.keys())),
],
outputs=[
io.Model.Output("MODEL"),
io.Clip.Output("CLIP"),
io.Vae.Output("VAE"),
]
)
@classmethod
def execute(cls, **kwargs) -> io.NodeOutput:
model, clip, vae = load_sdxl_pipeline(cls, apply_loras=True, **kwargs)
return io.NodeOutput(model, clip, vae)
def load_diffusion_model(diffusion_model, dtype="default"):
unet_path = folder_paths.get_full_path_or_raise("diffusion_models", diffusion_model)
model_options = {}
match dtype:
case "fp8_e4m3fn":
model_options["dtype"] = float8_e4m3fn
case "fp8_e4m3fn_fast":
model_options["dtype"] = float8_e4m3fn
model_options["fp8_optimizations"] = True
case "fp8_e5m2":
model_options["dtype"] = float8_e5m2
case _:
pass
return sd.load_diffusion_model(unet_path, model_options=model_options)
def load_flux_clip(clip_l, t5xxl, device):
clip_type = sd.CLIPType.FLUX
clip_l_path = folder_paths.get_full_path_or_raise("text_encoders", clip_l)
t5xxl_path = folder_paths.get_full_path_or_raise("text_encoders", t5xxl)
model_options = {}
if device == TORCH_DEVICE_CPU:
model_options["load_device"] = model_options["offload_device"] = device(TORCH_DEVICE_CPU)
return sd.load_clip(
ckpt_paths=[clip_l_path, t5xxl_path],
embedding_directory=folder_paths.get_folder_paths("embeddings"),
clip_type=clip_type,
model_options=model_options
)
class ModelSamplingFluxAdvanced(model_sampling.ModelSamplingFlux, model_sampling.CONST):
pass
def patch_flux_sampling(model, base_sampling_shift, max_sampling_shift, sampling_width, sampling_height):
tmodel = model.clone()
slope = (max_sampling_shift - base_sampling_shift) / (MAX_SAMPLING_RES - MIN_SAMPLING_RES)
intercept = base_sampling_shift - slope * MIN_SAMPLING_RES
current_res = (sampling_width * sampling_height / (8 * 8 * 2 * 2))
shift = current_res * slope + intercept
model_sampling = ModelSamplingFluxAdvanced(model.model.model_config)
model_sampling.set_parameters(shift=shift)
tmodel.add_object_patch("model_sampling", model_sampling)
return tmodel
def load_flux_pipeline(cls, apply_loras=False, **kwargs):
model = load_diffusion_model(kwargs.get("diffusion_model"))
if kwargs.get("apply_sampling"):
args = {
"model": model,
"base_sampling_shift": kwargs.get("base_sampling_shift"),
"max_sampling_shift": kwargs.get("max_sampling_shift"),
"sampling_width": kwargs.get("sampling_width"),
"sampling_height": kwargs.get("sampling_height"),
}
model = patch_flux_sampling(**args)
clip = load_flux_clip(
kwargs.get("clip_l"),
kwargs.get("t5xxl"),
kwargs.get("clip_device"),
)
if apply_loras:
loras = [
(kwargs.get("lora_name_1"), kwargs.get("strength_1"), 'loaded_lora_1'),
(kwargs.get("lora_name_2"), kwargs.get("strength_2"), 'loaded_lora_2'),
(kwargs.get("lora_name_3"), kwargs.get("strength_3"), 'loaded_lora_3'),
(kwargs.get("lora_name_4"), kwargs.get("strength_4"), 'loaded_lora_4'),
]
for name, strength, attr in loras:
if name != "None" and strength != 0:
cached = getattr(cls, attr)
model, clip, lora = apply_lora(cached, model, clip, name, strength)
setattr(cls, attr, lora)
vae = load_vae(kwargs.get("vae_name"), kwargs.get("vae_device"), kwargs.get("vae_dtype"))
return (model, clip, vae,)
class TT_FluxModelsLoaderNode(io.ComfyNode):
@classmethod
def define_schema(cls) -> io.Schema:
return io.Schema(
node_id="TT_FluxModelsLoaderNode",
display_name="TT FLUX Models Loader",
category=CATEGORY,
description="",
inputs=[
io.Combo.Input("diffusion_model", options=get_diffusion_models_files()),
io.Combo.Input("clip_l", options=get_text_encoder_files()),
io.Combo.Input("t5xxl", options=get_text_encoder_files()),
io.Combo.Input("clip_device", options=TORCH_DEVICES, default="default"),
io.Combo.Input("vae_name", options=get_vae_files()),
],
outputs=[
io.Model.Output("MODEL"),
io.Clip.Output("CLIP"),
io.Vae.Output("VAE"),
]
)
@classmethod
def execute(cls, **kwargs) -> io.NodeOutput:
model, clip, vae = load_flux_pipeline(cls, apply_loras=False, **kwargs)
return io.NodeOutput(model, clip, vae)
class TT_FluxModelsLoaderAdvancedNode(io.ComfyNode):
loaded_lora_1 = None
loaded_lora_2 = None
loaded_lora_3 = None
loaded_lora_4 = None
@classmethod
def define_schema(cls) -> io.Schema:
return io.Schema(
node_id="TT_FluxModelsLoaderAdvancedNode",
display_name="TT FLUX Models Loader (Advanced)",
category=CATEGORY,
description="",
inputs=[
io.Combo.Input("diffusion_model", options=get_diffusion_models_files()),
io.Boolean.Input("apply_sampling", default=True, label_on="Flux Shift", label_off="No Shift"),
io.Float.Input("base_sampling_shift", default=0.5, min=0.0, max=100.0, step=0.01, advanced=True),
io.Float.Input("max_sampling_shift", default=1.15, min=0.0, max=100.0, step=0.01, advanced=True),
io.Int.Input("sampling_width", default=1024, min=16, max=MAX_RESOLUTION, step=8, advanced=True),
io.Int.Input("sampling_height", default=1024, min=16, max=MAX_RESOLUTION, step=8, advanced=True),
io.Combo.Input("clip_l", options=get_text_encoder_files()),
io.Combo.Input("t5xxl", options=get_text_encoder_files()),
io.Combo.Input("clip_device", options=TORCH_DEVICES, default="default", advanced=True),
io.Combo.Input("lora_name_1", options=get_lora_files()),
io.Float.Input("strength_1", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_2", options=get_lora_files()),
io.Float.Input("strength_2", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_3", options=get_lora_files()),
io.Float.Input("strength_3", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_4", options=get_lora_files()),
io.Float.Input("strength_4", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("vae_name", options=get_vae_files()),
io.Combo.Input("vae_device", options=TORCH_DEVICES, default="default", advanced=True),
io.Combo.Input("vae_dtype", options=list(DTYPES.keys()), advanced=True),
],
outputs=[
io.Model.Output("MODEL"),
io.Clip.Output("CLIP"),
io.Vae.Output("VAE"),
]
)
@classmethod
def execute(cls, **kwargs) -> io.NodeOutput:
model, clip, vae = load_flux_pipeline(cls, apply_loras=True, **kwargs)
return io.NodeOutput(model, clip, vae)
def update_folder_names_and_paths(folder, base_folder=None, exts=None):
if folder in folder_paths.folder_names_and_paths:
return
path = os.path.join(folder_paths.models_dir, folder)
os.makedirs(path, exist_ok=True)
paths = [path]
base_paths, base_exts = folder_paths.folder_names_and_paths.get(base_folder, ([], {})) if base_folder else ([], {})
_exts = exts if exts is not None else base_exts
folder_paths.folder_names_and_paths[folder] = (paths + base_paths, _exts)
WeightBackup = collections.namedtuple('WeightBackup', ['weight', 'inplace_update'])
class GGUFModelPatcher(model_patcher.ModelPatcher):
patch_on_device = False
def patch_weight_to_device(self, key, device_to=None, inplace_update=False):
if key not in self.patches:
return
weight = utils.get_attr(self.model, key)
patches = self.patches[key]
if is_quantized(weight):
out_weight = weight.to(device_to)
patches = move_patch_to_device(patches, self.load_device if self.patch_on_device else self.offload_device)
# TODO: do we ever have legitimate duplicate patches? (i.e. patch on top of patched weight)
out_weight.patches = [(patches, key)]
else:
inplace_update = self.weight_inplace_update or inplace_update
if key not in self.backup:
self.backup[key] = WeightBackup(
weight.to(device=self.offload_device, copy=inplace_update), inplace_update
)
if device_to is not None:
temp_weight = model_management.cast_to_device(weight, device_to, torch.float32, copy=True)
else:
temp_weight = weight.to(torch.float32, copy=True)
out_weight = lora.calculate_weight(patches, temp_weight, key)
out_weight = float.stochastic_rounding(out_weight, weight.dtype)
if inplace_update:
utils.copy_to_param(self.model, key, out_weight)
else:
utils.set_attr_param(self.model, key, out_weight)
def unpatch_model(self, device_to=None, unpatch_weights=True):
if unpatch_weights:
for p in self.model.parameters():
if is_torch_compatible(p):
continue
patches = getattr(p, "patches", [])
if len(patches) > 0:
p.patches = []
# TODO: Find another way to not unload after patches
return super().unpatch_model(device_to=device_to, unpatch_weights=unpatch_weights)
def get_dtype(dtype):
match dtype:
case None | "default":
return None
case "target":
return dtype
case _:
return getattr(torch, dtype)
def load_clip_data(ckpt_paths):
clip_data = []
for path in ckpt_paths:
if path.endswith(".gguf"):
state_dict = gguf_clip_loader(path)
else:
state_dict = utils.load_torch_file(path, safe_load=True)
# NOTE: Scaled FP8 would require different custom ops, but only one can be active
if "scaled_fp8" in state_dict:
raise NotImplementedError(
f"Mixing scaled FP8 with GGUF is not supported! Use regular CLIP loader or switch model(s)\n({path})")
clip_data.append(state_dict)
return clip_data
def load_flux_clip_patcher(clip_name, type="flux2"):
clip_path = folder_paths.get_full_path("text_encoders_gguf", clip_name)
clip_type = getattr(sd.CLIPType, type.upper(), sd.CLIPType.FLUX2)
clip_data = load_clip_data([clip_path])
clip = sd.load_text_encoder_state_dicts(
clip_type=clip_type,
state_dicts=clip_data,
model_options={
"custom_operations": GGMLOps,
"initial_device": model_management.text_encoder_offload_device()
},
embedding_directory=folder_paths.get_folder_paths("embeddings"),
)
clip.patcher = GGUFModelPatcher.clone(clip.patcher)
return clip
def load_sd3_clip_patcher(clip_l, clip_g, t5xxl, type="sd3"):
clip_l_path = folder_paths.get_full_path("text_encoders_gguf", clip_l)
clip_g_path = folder_paths.get_full_path("text_encoders_gguf", clip_g)
t5xxl_path = folder_paths.get_full_path("text_encoders_gguf", t5xxl)
clip_type = getattr(sd.CLIPType, type.upper(), sd.CLIPType.SD3)
clip_data = load_clip_data([clip_l_path, clip_g_path, t5xxl_path])
clip = sd.load_text_encoder_state_dicts(
clip_type=clip_type,
state_dicts=clip_data,
model_options={
"custom_operations": GGMLOps,
"initial_device": model_management.text_encoder_offload_device()
},
embedding_directory=folder_paths.get_folder_paths("embeddings"),
)
clip.patcher = GGUFModelPatcher.clone(clip.patcher)
return clip
def apply_bypass_lora_for_models(loaded_lora, model, clip, lora_name, strength):
if loaded_lora == None:
lora_path = folder_paths.get_full_path_or_raise("loras", lora_name)
lora = utils.load_torch_file(lora_path, safe_load=True)
else:
lora = loaded_lora
patched_model, patched_clip = sd.load_bypass_lora_for_models(model, clip, lora, strength, strength)
return (patched_model, patched_clip, lora,)
def load_gguf_pipeline(cls, **kwargs):
ops = GGMLOps()
ops.Linear.dequant_dtype = get_dtype(kwargs.get("dequant_dtype", None))
ops.Linear.patch_dtype = get_dtype(kwargs.get("patch_dtype", None))
gguf_full_path = folder_paths.get_full_path("diffusion_models_gguf", kwargs.get("diffusion_model"))
state_dict, extra = gguf_sd_loader(gguf_full_path)
args = {}
valid_params = inspect.signature(sd.load_diffusion_model_state_dict).parameters
if "metadata" in valid_params:
args["metadata"] = extra.get("metadata", {})
model = sd.load_diffusion_model_state_dict(state_dict, model_options={"custom_operations": ops}, **args, )
if model is None:
raise RuntimeError("ERROR: Could not detect model type of: {}".format(gguf_full_path))
model = GGUFModelPatcher.clone(model)
model.patch_on_device = kwargs.get("patch_on_device", None)
apply_sampling = kwargs.get("apply_sampling")
if apply_sampling:
args = {
"model": model,
"base_sampling_shift": kwargs.get("base_sampling_shift"),
"max_sampling_shift": kwargs.get("max_sampling_shift"),
"sampling_width": kwargs.get("sampling_width"),
"sampling_height": kwargs.get("sampling_height"),
}
model = patch_flux_sampling(**args)
clip_name = kwargs.get("clip")
if clip_name:
clip = load_flux_clip_patcher(kwargs.get("clip"), kwargs.get("clip_type", "flux2"))
else:
clip_l, clip_g, t5xxl = kwargs.get("clip_l"), kwargs.get("clip_g"), kwargs.get("t5xxl")
clip = load_sd3_clip_patcher(clip_l, clip_g, t5xxl)
if kwargs.get("apply_bypass_lora"):
loras = [
(kwargs.get("lora_name_1"), kwargs.get("strength_1"), 'loaded_lora_1'),
(kwargs.get("lora_name_2"), kwargs.get("strength_2"), 'loaded_lora_2'),
(kwargs.get("lora_name_3"), kwargs.get("strength_3"), 'loaded_lora_3'),
(kwargs.get("lora_name_4"), kwargs.get("strength_4"), 'loaded_lora_4'),
]
for name, strength, attr in loras:
if name != "None" and strength != 0:
cached = getattr(cls, attr)
model, clip, lora = apply_bypass_lora_for_models(cached, model, clip, name, strength)
setattr(cls, attr, lora)
vae = load_vae(
kwargs.get("vae_name"),
kwargs.get("vae_device", "default"),
kwargs.get("vae_dtype", "bfloat16"),
)
return model, clip, vae
class TT_Flux2GgufModelsLoaderNode(io.ComfyNode):
@classmethod
def define_schema(cls) -> io.Schema:
return io.Schema(
node_id="TT_Flux2GgufModelsLoaderNode",
display_name="TT FLUX2 GGUF Models Loader",
category=CATEGORY,
description="",
inputs=[
io.Combo.Input("diffusion_model", options=get_gguf_diffusion_models_files()),
io.Combo.Input("clip", options=get_gguf_text_encoder_files()),
io.Combo.Input("vae_name", options=get_vae_files()),
],
outputs=[
io.Model.Output("MODEL"),
io.Clip.Output("CLIP"),
io.Vae.Output("VAE"),
]
)
@classmethod
def execute(cls, **kwargs) -> io.NodeOutput:
kwargs["apply_bypass_lora"] = False
model, clip, vae = load_gguf_pipeline(cls, apply_loras=True, **kwargs)
return io.NodeOutput(model, clip, vae)
class TT_Flux2GgufModelsLoaderAdvancedNode(io.ComfyNode):
loaded_lora_1 = None
loaded_lora_2 = None
loaded_lora_3 = None
loaded_lora_4 = None
@classmethod
def define_schema(cls) -> io.Schema:
return io.Schema(
node_id="TT_Flux2GgufModelsLoaderAdvancedNode",
display_name="TT FLUX2 GGUF Models Loader (Advanced)",
category=CATEGORY,
description="",
inputs=[
io.Combo.Input("diffusion_model", options=get_gguf_diffusion_models_files()),
io.Combo.Input("dequant_dtype", options=list(DTYPES.keys()), default="bfloat16", advanced=True),
io.Combo.Input("patch_dtype", options=list(DTYPES.keys()), default="bfloat16", advanced=True),
io.Boolean.Input("apply_sampling", default=True, label_on="Flux Shift", label_off="No Shift"),
io.Float.Input("base_sampling_shift", default=0.5, min=0.0, max=100.0, step=0.01, advanced=True),
io.Float.Input("max_sampling_shift", default=1.15, min=0.0, max=100.0, step=0.01, advanced=True),
io.Int.Input("sampling_width", default=1024, min=16, max=MAX_RESOLUTION, step=8, advanced=True),
io.Int.Input("sampling_height", default=1024, min=16, max=MAX_RESOLUTION, step=8, advanced=True),
io.Combo.Input("clip", options=get_gguf_text_encoder_files()),
io.Combo.Input("clip_device", options=TORCH_DEVICES, default="default", advanced=True),
io.Combo.Input("lora_name_1", options=get_lora_files()),
io.Float.Input("strength_1", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_2", options=get_lora_files()),
io.Float.Input("strength_2", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_3", options=get_lora_files()),
io.Float.Input("strength_3", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_4", options=get_lora_files()),
io.Float.Input("strength_4", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("vae_name", options=get_vae_files()),
io.Combo.Input("vae_device", options=TORCH_DEVICES, default="default", advanced=True),
io.Combo.Input("vae_dtype", options=list(DTYPES.keys()), advanced=True),
],
outputs=[
io.Model.Output("MODEL"),
io.Clip.Output("CLIP"),
io.Vae.Output("VAE"),
]
)
@classmethod
def execute(cls, **kwargs) -> io.NodeOutput:
kwargs["apply_bypass_lora"] = False
model, clip, vae = load_gguf_pipeline(cls, apply_loras=True, **kwargs)
return io.NodeOutput(model, clip, vae)
class TT_Sd35GgufModelsLoaderNode(io.ComfyNode):
@classmethod
def define_schema(cls) -> io.Schema:
return io.Schema(
node_id="TT_Sd35GgufModelsLoaderNode",
display_name="TT SD3.5 GGUF Models Loader",
category=CATEGORY,
description="",
inputs=[
io.Combo.Input("diffusion_model", options=get_gguf_diffusion_models_files()),
io.Combo.Input("clip_l", options=get_gguf_text_encoder_files()),
io.Combo.Input("clip_g", options=get_gguf_text_encoder_files()),
io.Combo.Input("t5xxl", options=get_gguf_text_encoder_files()),
io.Combo.Input("vae_name", options=get_vae_files()),
],
outputs=[
io.Model.Output("MODEL"),
io.Clip.Output("CLIP"),
io.Vae.Output("VAE"),
]
)
@classmethod
def execute(cls, **kwargs) -> io.NodeOutput:
kwargs["apply_bypass_lora"] = False
model, clip, vae = load_gguf_pipeline(cls, apply_loras=True, **kwargs)
return io.NodeOutput(model, clip, vae)
class TT_Sd35GgufModelsLoaderAdvancedNode(io.ComfyNode):
loaded_lora_1 = None
loaded_lora_2 = None
loaded_lora_3 = None
loaded_lora_4 = None
@classmethod
def define_schema(cls) -> io.Schema:
return io.Schema(
node_id="TT_Sd35GgufModelsLoaderAdvancedNode",
display_name="TT SD3.5 GGUF Models Loader (Advanced)",
category=CATEGORY,
description="",
inputs=[
io.Combo.Input("diffusion_model", options=get_gguf_diffusion_models_files()),
io.Combo.Input("dequant_dtype", options=list(DTYPES.keys()), default="bfloat16", advanced=True),
io.Combo.Input("patch_dtype", options=list(DTYPES.keys()), default="bfloat16", advanced=True),
io.Combo.Input("clip_l", options=get_gguf_text_encoder_files()),
io.Combo.Input("clip_g", options=get_gguf_text_encoder_files()),
io.Combo.Input("t5xxl", options=get_gguf_text_encoder_files()),
io.Combo.Input("clip_device", options=TORCH_DEVICES, default="default", advanced=True),
io.Combo.Input("lora_name_1", options=get_lora_files()),
io.Float.Input("strength_1", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_2", options=get_lora_files()),
io.Float.Input("strength_2", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_3", options=get_lora_files()),
io.Float.Input("strength_3", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("lora_name_4", options=get_lora_files()),
io.Float.Input("strength_4", default=1.0, min=-10.0, max=10.0, step=0.1),
io.Combo.Input("vae_name", options=get_vae_files()),
io.Combo.Input("vae_device", options=TORCH_DEVICES, default="default", advanced=True),
io.Combo.Input("vae_dtype", options=list(DTYPES.keys()), advanced=True),
],
outputs=[
io.Model.Output("MODEL"),
io.Clip.Output("CLIP"),
io.Vae.Output("VAE"),
]
)
@classmethod
def execute(cls, **kwargs) -> io.NodeOutput:
kwargs["apply_bypass_lora"] = True
model, clip, vae = load_gguf_pipeline(cls, apply_loras=True, **kwargs)
return io.NodeOutput(model, clip, vae)
# ==============================================================================
# V3 entrypoint — registers context nodes with ComfyUI
# ==============================================================================
class LoaderNodesExtension(ComfyExtension):
@override
async def get_node_list(self) -> list[type[io.ComfyNode]]:
return [
TT_SdxlModelsLoaderNode,
TT_SdxlModelsLoaderAdvancedNode,
TT_FluxModelsLoaderNode,
TT_FluxModelsLoaderAdvancedNode,
TT_Flux2GgufModelsLoaderNode,
TT_Flux2GgufModelsLoaderAdvancedNode,
TT_Sd35GgufModelsLoaderNode,
TT_Sd35GgufModelsLoaderAdvancedNode,
]
async def comfy_entrypoint() -> LoaderNodesExtension:
return LoaderNodesExtension()
# ==============================================================================
# Re-exports for backward compatibility
# ==============================================================================
__all__ = [
"TT_SdxlModelsLoaderNode",
"TT_SdxlModelsLoaderAdvancedNode",
"TT_FluxModelsLoaderNode",
"TT_FluxModelsLoaderAdvancedNode",
"TT_Flux2GgufModelsLoaderNode",
"TT_Flux2GgufModelsLoaderAdvancedNode",
"TT_Sd35GgufModelsLoaderNode",
"TT_Sd35GgufModelsLoaderAdvancedNode",
]