Support official SD3.5 Controlnets.

At length=1, the LTX model can do txt2img and img2img with no other changes required.

README.md

@@ -75,37 +75,37 @@ Workflow examples can be found on the [Examples page](https://comfyanonymous.git
 
 | Keybind                            | Explanation                                                                                                        |
 |------------------------------------|--------------------------------------------------------------------------------------------------------------------|
-| Ctrl + Enter                       | Queue up current graph for generation                                                                              |
-| Ctrl + Shift + Enter               | Queue up current graph as first for generation                                                                     |
-| Ctrl + Alt + Enter                 | Cancel current generation                                                                                          |
-| Ctrl + Z/Ctrl + Y                  | Undo/Redo                                                                                                          |
-| Ctrl + S                           | Save workflow                                                                                                      |
-| Ctrl + O                           | Load workflow                                                                                                      |
-| Ctrl + A                           | Select all nodes                                                                                                   |
-| Alt + C                            | Collapse/uncollapse selected nodes                                                                                 |
-| Ctrl + M                           | Mute/unmute selected nodes                                                                                         |
-| Ctrl + B                           | Bypass selected nodes (acts like the node was removed from the graph and the wires reconnected through)            |
-| Delete/Backspace                   | Delete selected nodes                                                                                              |
-| Ctrl + Backspace                   | Delete the current graph                                                                                           |
-| Space                              | Move the canvas around when held and moving the cursor                                                             |
-| Ctrl/Shift + Click                 | Add clicked node to selection                                                                                      |
-| Ctrl + C/Ctrl + V                  | Copy and paste selected nodes (without maintaining connections to outputs of unselected nodes)                     |
-| Ctrl + C/Ctrl + Shift + V          | Copy and paste selected nodes (maintaining connections from outputs of unselected nodes to inputs of pasted nodes) |
-| Shift + Drag                       | Move multiple selected nodes at the same time                                                                      |
-| Ctrl + D                           | Load default graph                                                                                                 |
-| Alt + `+`                          | Canvas Zoom in                                                                                                     |
-| Alt + `-`                          | Canvas Zoom out                                                                                                    |
-| Ctrl + Shift + LMB + Vertical drag | Canvas Zoom in/out                                                                                                 |
-| P                                  | Pin/Unpin selected nodes                                                                                           |
-| Ctrl + G                           | Group selected nodes                                                                                               |
-| Q                                  | Toggle visibility of the queue                                                                                     |
-| H                                  | Toggle visibility of history                                                                                       |
-| R                                  | Refresh graph                                                                                                      |
+| `Ctrl` + `Enter`                      | Queue up current graph for generation                                                                              |
+| `Ctrl` + `Shift` + `Enter`              | Queue up current graph as first for generation                                                                     |
+| `Ctrl` + `Alt` + `Enter`                | Cancel current generation                                                                                          |
+| `Ctrl` + `Z`/`Ctrl` + `Y`                 | Undo/Redo                                                                                                          |
+| `Ctrl` + `S`                          | Save workflow                                                                                                      |
+| `Ctrl` + `O`                          | Load workflow                                                                                                      |
+| `Ctrl` + `A`                          | Select all nodes                                                                                                   |
+| `Alt `+ `C`                           | Collapse/uncollapse selected nodes                                                                                 |
+| `Ctrl` + `M`                          | Mute/unmute selected nodes                                                                                         |
+| `Ctrl` + `B`                           | Bypass selected nodes (acts like the node was removed from the graph and the wires reconnected through)            |
+| `Delete`/`Backspace`                   | Delete selected nodes                                                                                              |
+| `Ctrl` + `Backspace`                   | Delete the current graph                                                                                           |
+| `Space`                              | Move the canvas around when held and moving the cursor                                                             |
+| `Ctrl`/`Shift` + `Click`                 | Add clicked node to selection                                                                                      |
+| `Ctrl` + `C`/`Ctrl` + `V`                  | Copy and paste selected nodes (without maintaining connections to outputs of unselected nodes)                     |
+| `Ctrl` + `C`/`Ctrl` + `Shift` + `V`          | Copy and paste selected nodes (maintaining connections from outputs of unselected nodes to inputs of pasted nodes) |
+| `Shift` + `Drag`                       | Move multiple selected nodes at the same time                                                                      |
+| `Ctrl` + `D`                           | Load default graph                                                                                                 |
+| `Alt` + `+`                          | Canvas Zoom in                                                                                                     |
+| `Alt` + `-`                          | Canvas Zoom out                                                                                                    |
+| `Ctrl` + `Shift` + LMB + Vertical drag | Canvas Zoom in/out                                                                                                 |
+| `P`                                  | Pin/Unpin selected nodes                                                                                           |
+| `Ctrl` + `G`                           | Group selected nodes                                                                                               |
+| `Q`                                 | Toggle visibility of the queue                                                                                     |
+| `H`                                  | Toggle visibility of history                                                                                       |
+| `R`                                  | Refresh graph                                                                                                      |
 | Double-Click LMB                   | Open node quick search palette                                                                                     |
-| Shift + Drag                       | Move multiple wires at once                                                                                        |
-| Ctrl + Alt + LMB                   | Disconnect all wires from clicked slot                                                                             |
+| `Shift` + Drag                       | Move multiple wires at once                                                                                        |
+| `Ctrl` + `Alt` + LMB                   | Disconnect all wires from clicked slot                                                                             |
 
-Ctrl can also be replaced with Cmd instead for macOS users
+`Ctrl` can also be replaced with `Cmd` instead for macOS users
 
 # Installing
 

comfy/cldm/dit_embedder.py

@@ -0,0 +1,122 @@
+import math
+from typing import List, Optional, Tuple
+
+import numpy as np
+import torch
+import torch.nn as nn
+from einops import rearrange
+from torch import Tensor
+
+from comfy.ldm.modules.diffusionmodules.mmdit import DismantledBlock, PatchEmbed, VectorEmbedder, TimestepEmbedder, get_2d_sincos_pos_embed_torch
+
+
+class ControlNetEmbedder(nn.Module):
+
+    def __init__(
+        self,
+        img_size: int,
+        patch_size: int,
+        in_chans: int,
+        attention_head_dim: int,
+        num_attention_heads: int,
+        adm_in_channels: int,
+        num_layers: int,
+        main_model_double: int,
+        double_y_emb: bool,
+        device: torch.device,
+        dtype: torch.dtype,
+        pos_embed_max_size: Optional[int] = None,
+        operations = None,
+    ):
+        super().__init__()
+        self.main_model_double = main_model_double
+        self.dtype = dtype
+        self.hidden_size = num_attention_heads * attention_head_dim
+        self.patch_size = patch_size
+        self.x_embedder = PatchEmbed(
+            img_size=img_size,
+            patch_size=patch_size,
+            in_chans=in_chans,
+            embed_dim=self.hidden_size,
+            strict_img_size=pos_embed_max_size is None,
+            device=device,
+            dtype=dtype,
+            operations=operations,
+        )
+
+        self.t_embedder = TimestepEmbedder(self.hidden_size, dtype=dtype, device=device, operations=operations)
+
+        self.double_y_emb = double_y_emb
+        if self.double_y_emb:
+            self.orig_y_embedder = VectorEmbedder(
+                adm_in_channels, self.hidden_size, dtype, device, operations=operations
+            )
+            self.y_embedder = VectorEmbedder(
+                self.hidden_size, self.hidden_size, dtype, device, operations=operations
+            )
+        else:
+            self.y_embedder = VectorEmbedder(
+                adm_in_channels, self.hidden_size, dtype, device, operations=operations
+            )
+
+        self.transformer_blocks = nn.ModuleList(
+            DismantledBlock(
+                hidden_size=self.hidden_size, num_heads=num_attention_heads, qkv_bias=True,
+                dtype=dtype, device=device, operations=operations
+            )
+            for _ in range(num_layers)
+        )
+
+        # self.use_y_embedder = pooled_projection_dim != self.time_text_embed.text_embedder.linear_1.in_features
+        # TODO double check this logic when 8b
+        self.use_y_embedder = True
+
+        self.controlnet_blocks = nn.ModuleList([])
+        for _ in range(len(self.transformer_blocks)):
+            controlnet_block = operations.Linear(self.hidden_size, self.hidden_size, dtype=dtype, device=device)
+            self.controlnet_blocks.append(controlnet_block)
+
+        self.pos_embed_input = PatchEmbed(
+            img_size=img_size,
+            patch_size=patch_size,
+            in_chans=in_chans,
+            embed_dim=self.hidden_size,
+            strict_img_size=False,
+            device=device,
+            dtype=dtype,
+            operations=operations,
+        )
+
+    def forward(
+        self,
+        x: torch.Tensor,
+        timesteps: torch.Tensor,
+        y: Optional[torch.Tensor] = None,
+        context: Optional[torch.Tensor] = None,
+        hint = None,
+    ) -> Tuple[Tensor, List[Tensor]]:
+        x_shape = list(x.shape)
+        x = self.x_embedder(x)
+        if not self.double_y_emb:
+            h = (x_shape[-2] + 1) // self.patch_size
+            w = (x_shape[-1] + 1) // self.patch_size
+            x += get_2d_sincos_pos_embed_torch(self.hidden_size, w, h, device=x.device)
+        c = self.t_embedder(timesteps, dtype=x.dtype)
+        if y is not None and self.y_embedder is not None:
+            if self.double_y_emb:
+                y = self.orig_y_embedder(y)
+            y = self.y_embedder(y)
+            c = c + y
+
+        x = x + self.pos_embed_input(hint)
+
+        block_out = ()
+
+        repeat = math.ceil(self.main_model_double / len(self.transformer_blocks))
+        for i in range(len(self.transformer_blocks)):
+            out = self.transformer_blocks[i](x, c)
+            if not self.double_y_emb:
+                x = out
+            block_out += (self.controlnet_blocks[i](out),) * repeat
+
+        return {"output": block_out}

comfy/cli_args.py

@@ -60,8 +60,10 @@ fp_group.add_argument("--force-fp32", action="store_true", help="Force fp32 (If
 fp_group.add_argument("--force-fp16", action="store_true", help="Force fp16.")
 
 fpunet_group = parser.add_mutually_exclusive_group()
-fpunet_group.add_argument("--bf16-unet", action="store_true", help="Run the UNET in bf16. This should only be used for testing stuff.")
-fpunet_group.add_argument("--fp16-unet", action="store_true", help="Store unet weights in fp16.")
+fpunet_group.add_argument("--fp32-unet", action="store_true", help="Run the diffusion model in fp32.")
+fpunet_group.add_argument("--fp64-unet", action="store_true", help="Run the diffusion model in fp64.")
+fpunet_group.add_argument("--bf16-unet", action="store_true", help="Run the diffusion model in bf16.")
+fpunet_group.add_argument("--fp16-unet", action="store_true", help="Run the diffusion model in fp16")
 fpunet_group.add_argument("--fp8_e4m3fn-unet", action="store_true", help="Store unet weights in fp8_e4m3fn.")
 fpunet_group.add_argument("--fp8_e5m2-unet", action="store_true", help="Store unet weights in fp8_e5m2.")
 

comfy/controlnet.py

@@ -35,7 +35,7 @@ import comfy.ldm.cascade.controlnet
 import comfy.cldm.mmdit
 import comfy.ldm.hydit.controlnet
 import comfy.ldm.flux.controlnet
-
+import comfy.cldm.dit_embedder
 
 def broadcast_image_to(tensor, target_batch_size, batched_number):
     current_batch_size = tensor.shape[0]
@@ -78,6 +78,7 @@ class ControlBase:
         self.concat_mask = False
         self.extra_concat_orig = []
         self.extra_concat = None
+        self.preprocess_image = lambda a: a
 
     def set_cond_hint(self, cond_hint, strength=1.0, timestep_percent_range=(0.0, 1.0), vae=None, extra_concat=[]):
         self.cond_hint_original = cond_hint
@@ -129,6 +130,7 @@ class ControlBase:
         c.strength_type = self.strength_type
         c.concat_mask = self.concat_mask
         c.extra_concat_orig = self.extra_concat_orig.copy()
+        c.preprocess_image = self.preprocess_image
 
     def inference_memory_requirements(self, dtype):
         if self.previous_controlnet is not None:
@@ -181,7 +183,7 @@ class ControlBase:
 
 
 class ControlNet(ControlBase):
-    def __init__(self, control_model=None, global_average_pooling=False, compression_ratio=8, latent_format=None, load_device=None, manual_cast_dtype=None, extra_conds=["y"], strength_type=StrengthType.CONSTANT, concat_mask=False):
+    def __init__(self, control_model=None, global_average_pooling=False, compression_ratio=8, latent_format=None, load_device=None, manual_cast_dtype=None, extra_conds=["y"], strength_type=StrengthType.CONSTANT, concat_mask=False, preprocess_image=lambda a: a):
         super().__init__()
         self.control_model = control_model
         self.load_device = load_device
@@ -196,6 +198,7 @@ class ControlNet(ControlBase):
         self.extra_conds += extra_conds
         self.strength_type = strength_type
         self.concat_mask = concat_mask
+        self.preprocess_image = preprocess_image
 
     def get_control(self, x_noisy, t, cond, batched_number):
         control_prev = None
@@ -224,6 +227,7 @@ class ControlNet(ControlBase):
                 if self.latent_format is not None:
                     raise ValueError("This Controlnet needs a VAE but none was provided, please use a ControlNetApply node with a VAE input and connect it.")
             self.cond_hint = comfy.utils.common_upscale(self.cond_hint_original, x_noisy.shape[3] * compression_ratio, x_noisy.shape[2] * compression_ratio, self.upscale_algorithm, "center")
+            self.cond_hint = self.preprocess_image(self.cond_hint)
             if self.vae is not None:
                 loaded_models = comfy.model_management.loaded_models(only_currently_used=True)
                 self.cond_hint = self.vae.encode(self.cond_hint.movedim(1, -1))
@@ -427,6 +431,7 @@ def controlnet_load_state_dict(control_model, sd):
         logging.debug("unexpected controlnet keys: {}".format(unexpected))
     return control_model
 
+
 def load_controlnet_mmdit(sd, model_options={}):
     new_sd = comfy.model_detection.convert_diffusers_mmdit(sd, "")
     model_config, operations, load_device, unet_dtype, manual_cast_dtype, offload_device = controlnet_config(new_sd, model_options=model_options)
@@ -448,6 +453,83 @@ def load_controlnet_mmdit(sd, model_options={}):
     return control
 
 
+class ControlNetSD35(ControlNet):
+    def pre_run(self, model, percent_to_timestep_function):
+        if self.control_model.double_y_emb:
+            missing, unexpected = self.control_model.orig_y_embedder.load_state_dict(model.diffusion_model.y_embedder.state_dict(), strict=False)
+        else:
+            missing, unexpected = self.control_model.x_embedder.load_state_dict(model.diffusion_model.x_embedder.state_dict(), strict=False)
+        super().pre_run(model, percent_to_timestep_function)
+
+    def copy(self):
+        c = ControlNetSD35(None, global_average_pooling=self.global_average_pooling, load_device=self.load_device, manual_cast_dtype=self.manual_cast_dtype)
+        c.control_model = self.control_model
+        c.control_model_wrapped = self.control_model_wrapped
+        self.copy_to(c)
+        return c
+
+def load_controlnet_sd35(sd, model_options={}):
+    control_type = -1
+    if "control_type" in sd:
+        control_type = round(sd.pop("control_type").item())
+
+    # blur_cnet = control_type == 0
+    canny_cnet = control_type == 1
+    depth_cnet = control_type == 2
+
+    print(control_type, canny_cnet, depth_cnet)
+    new_sd = {}
+    for k in comfy.utils.MMDIT_MAP_BASIC:
+        if k[1] in sd:
+            new_sd[k[0]] = sd.pop(k[1])
+    for k in sd:
+        new_sd[k] = sd[k]
+    sd = new_sd
+
+    y_emb_shape = sd["y_embedder.mlp.0.weight"].shape
+    depth = y_emb_shape[0] // 64
+    hidden_size = 64 * depth
+    num_heads = depth
+    head_dim = hidden_size // num_heads
+    num_blocks = comfy.model_detection.count_blocks(new_sd, 'transformer_blocks.{}.')
+
+    load_device = comfy.model_management.get_torch_device()
+    offload_device = comfy.model_management.unet_offload_device()
+    unet_dtype = comfy.model_management.unet_dtype(model_params=-1)
+
+    manual_cast_dtype = comfy.model_management.unet_manual_cast(unet_dtype, load_device)
+
+    operations = model_options.get("custom_operations", None)
+    if operations is None:
+        operations = comfy.ops.pick_operations(unet_dtype, manual_cast_dtype, disable_fast_fp8=True)
+
+    control_model = comfy.cldm.dit_embedder.ControlNetEmbedder(img_size=None,
+                                                               patch_size=2,
+                                                               in_chans=16,
+                                                               num_layers=num_blocks,
+                                                               main_model_double=depth,
+                                                               double_y_emb=y_emb_shape[0] == y_emb_shape[1],
+                                                               attention_head_dim=head_dim,
+                                                               num_attention_heads=num_heads,
+                                                               adm_in_channels=2048,
+                                                               device=offload_device,
+                                                               dtype=unet_dtype,
+                                                               operations=operations)
+
+    control_model = controlnet_load_state_dict(control_model, sd)
+
+    latent_format = comfy.latent_formats.SD3()
+    preprocess_image = lambda a: a
+    if canny_cnet:
+        preprocess_image = lambda a: (a * 255 * 0.5 + 0.5)
+    elif depth_cnet:
+        preprocess_image = lambda a: 1.0 - a
+
+    control = ControlNetSD35(control_model, compression_ratio=1, latent_format=latent_format, load_device=load_device, manual_cast_dtype=manual_cast_dtype, preprocess_image=preprocess_image)
+    return control
+
+
+
 def load_controlnet_hunyuandit(controlnet_data, model_options={}):
     model_config, operations, load_device, unet_dtype, manual_cast_dtype, offload_device = controlnet_config(controlnet_data, model_options=model_options)
 
@@ -560,7 +642,10 @@ def load_controlnet_state_dict(state_dict, model=None, model_options={}):
         if "double_blocks.0.img_attn.norm.key_norm.scale" in controlnet_data:
             return load_controlnet_flux_xlabs_mistoline(controlnet_data, model_options=model_options)
         elif "pos_embed_input.proj.weight" in controlnet_data:
-            return load_controlnet_mmdit(controlnet_data, model_options=model_options) #SD3 diffusers controlnet
+            if "transformer_blocks.0.adaLN_modulation.1.bias" in controlnet_data:
+                return load_controlnet_sd35(controlnet_data, model_options=model_options) #Stability sd3.5 format
+            else:
+                return load_controlnet_mmdit(controlnet_data, model_options=model_options) #SD3 diffusers controlnet
         elif "controlnet_x_embedder.weight" in controlnet_data:
             return load_controlnet_flux_instantx(controlnet_data, model_options=model_options)
     elif "controlnet_blocks.0.linear.weight" in controlnet_data: #mistoline flux

comfy/ldm/hydit/models.py

@@ -287,7 +287,7 @@ class HunYuanDiT(nn.Module):
                 style=None,
                 return_dict=False,
                 control=None,
-                transformer_options=None,
+                transformer_options={},
                 ):
         """
         Forward pass of the encoder.
@@ -315,8 +315,7 @@ class HunYuanDiT(nn.Module):
         return_dict: bool
             Whether to return a dictionary.
         """
-        #import pdb
-        #pdb.set_trace()
+        patches_replace = transformer_options.get("patches_replace", {})
         encoder_hidden_states = context
         text_states = encoder_hidden_states                     # 2,77,1024
         text_states_t5 = encoder_hidden_states_t5               # 2,256,2048
@@ -364,6 +363,8 @@ class HunYuanDiT(nn.Module):
         # Concatenate all extra vectors
         c = t + self.extra_embedder(extra_vec)  # [B, D]
 
+        blocks_replace = patches_replace.get("dit", {})
+
         controls = None
         if control:
             controls = control.get("output", None)
@@ -375,9 +376,20 @@ class HunYuanDiT(nn.Module):
                     skip = skips.pop() + controls.pop().to(dtype=x.dtype)
                 else:
                     skip = skips.pop()
-                x = block(x, c, text_states, freqs_cis_img, skip)   # (N, L, D)
             else:
-                x = block(x, c, text_states, freqs_cis_img)         # (N, L, D)
+                skip = None
+
+            if ("double_block", layer) in blocks_replace:
+                def block_wrap(args):
+                    out = {}
+                    out["img"] = block(args["img"], args["vec"], args["txt"], args["pe"], args["skip"])
+                    return out
+
+                out = blocks_replace[("double_block", layer)]({"img": x, "txt": text_states, "vec": c, "pe": freqs_cis_img, "skip": skip}, {"original_block": block_wrap})
+                x = out["img"]
+            else:
+                x = block(x, c, text_states, freqs_cis_img, skip)   # (N, L, D)
+
 
             if layer < (self.depth // 2 - 1):
                 skips.append(x)

comfy/ldm/lightricks/model.py

@@ -415,13 +415,15 @@ class LTXVModel(torch.nn.Module):
 
         self.patchifier = SymmetricPatchifier(1)
 
-    def forward(self, x, timestep, context, attention_mask, frame_rate=25, guiding_latent=None, **kwargs):
+    def forward(self, x, timestep, context, attention_mask, frame_rate=25, guiding_latent=None, transformer_options={}, **kwargs):
+        patches_replace = transformer_options.get("patches_replace", {})
+
         indices_grid = self.patchifier.get_grid(
             orig_num_frames=x.shape[2],
             orig_height=x.shape[3],
             orig_width=x.shape[4],
             batch_size=x.shape[0],
-            scale_grid=((1 / frame_rate) * 8, 32, 32), #TODO: controlable frame rate
+            scale_grid=((1 / frame_rate) * 8, 32, 32),
             device=x.device,
         )
 
@@ -468,14 +470,24 @@ class LTXVModel(torch.nn.Module):
                 batch_size, -1, x.shape[-1]
             )
 
-        for block in self.transformer_blocks:
-            x = block(
-                x,
-                context=context,
-                attention_mask=attention_mask,
-                timestep=timestep,
-                pe=pe
-            )
+        blocks_replace = patches_replace.get("dit", {})
+        for i, block in enumerate(self.transformer_blocks):
+            if ("double_block", i) in blocks_replace:
+                def block_wrap(args):
+                    out = {}
+                    out["img"] = block(args["img"], context=args["txt"], attention_mask=args["attention_mask"], timestep=args["vec"], pe=args["pe"])
+                    return out
+
+                out = blocks_replace[("double_block", i)]({"img": x, "txt": context, "attention_mask": attention_mask, "vec": timestep, "pe": pe}, {"original_block": block_wrap})
+                x = out["img"]
+            else:
+                x = block(
+                    x,
+                    context=context,
+                    attention_mask=attention_mask,
+                    timestep=timestep,
+                    pe=pe
+                )
 
         # 3. Output
         scale_shift_values = (

comfy/lora.py

@@ -62,6 +62,7 @@ def load_lora(lora, to_load):
         diffusers_lora = "{}_lora.up.weight".format(x)
         diffusers2_lora = "{}.lora_B.weight".format(x)
         diffusers3_lora = "{}.lora.up.weight".format(x)
+        mochi_lora = "{}.lora_B".format(x)
         transformers_lora = "{}.lora_linear_layer.up.weight".format(x)
         A_name = None
 
@@ -81,6 +82,10 @@ def load_lora(lora, to_load):
             A_name = diffusers3_lora
             B_name = "{}.lora.down.weight".format(x)
             mid_name = None
+        elif mochi_lora in lora.keys():
+            A_name = mochi_lora
+            B_name = "{}.lora_A".format(x)
+            mid_name = None
         elif transformers_lora in lora.keys():
             A_name = transformers_lora
             B_name ="{}.lora_linear_layer.down.weight".format(x)
@@ -362,6 +367,12 @@ def model_lora_keys_unet(model, key_map={}):
                 key_map["lycoris_{}".format(k[:-len(".weight")].replace(".", "_"))] = to #simpletrainer lycoris
                 key_map["lora_transformer_{}".format(k[:-len(".weight")].replace(".", "_"))] = to #onetrainer
 
+    if isinstance(model, comfy.model_base.GenmoMochi):
+        for k in sdk:
+            if k.startswith("diffusion_model.") and k.endswith(".weight"): #Official Mochi lora format
+                key_lora = k[len("diffusion_model."):-len(".weight")]
+                key_map["{}".format(key_lora)] = k
+
     return key_map
 
 

comfy/model_management.py

@@ -628,6 +628,10 @@ def maximum_vram_for_weights(device=None):
 def unet_dtype(device=None, model_params=0, supported_dtypes=[torch.float16, torch.bfloat16, torch.float32]):
     if model_params < 0:
         model_params = 1000000000000000000000
+    if args.fp32_unet:
+        return torch.float32
+    if args.fp64_unet:
+        return torch.float64
     if args.bf16_unet:
         return torch.bfloat16
     if args.fp16_unet:
@@ -674,7 +678,7 @@ def unet_dtype(device=None, model_params=0, supported_dtypes=[torch.float16, tor
 
 # None means no manual cast
 def unet_manual_cast(weight_dtype, inference_device, supported_dtypes=[torch.float16, torch.bfloat16, torch.float32]):
-    if weight_dtype == torch.float32:
+    if weight_dtype == torch.float32 or weight_dtype == torch.float64:
         return None
 
     fp16_supported = should_use_fp16(inference_device, prioritize_performance=False)

comfy/model_patcher.py

@@ -367,10 +367,7 @@ class ModelPatcher:
         else:
             set_func(out_weight, inplace_update=inplace_update, seed=string_to_seed(key))
 
-    def load(self, device_to=None, lowvram_model_memory=0, force_patch_weights=False, full_load=False):
-        mem_counter = 0
-        patch_counter = 0
-        lowvram_counter = 0
+    def _load_list(self):
         loading = []
         for n, m in self.model.named_modules():
             params = []
@@ -383,6 +380,13 @@ class ModelPatcher:
                     break
             if not skip and (hasattr(m, "comfy_cast_weights") or len(params) > 0):
                 loading.append((comfy.model_management.module_size(m), n, m, params))
+        return loading
+
+    def load(self, device_to=None, lowvram_model_memory=0, force_patch_weights=False, full_load=False):
+        mem_counter = 0
+        patch_counter = 0
+        lowvram_counter = 0
+        loading = self._load_list()
 
         load_completely = []
         loading.sort(reverse=True)
@@ -514,14 +518,7 @@ class ModelPatcher:
     def partially_unload(self, device_to, memory_to_free=0):
         memory_freed = 0
         patch_counter = 0
-        unload_list = []
-
-        for n, m in self.model.named_modules():
-            shift_lowvram = False
-            if hasattr(m, "comfy_cast_weights"):
-                module_mem = comfy.model_management.module_size(m)
-                unload_list.append((module_mem, n, m))
-
+        unload_list = self._load_list()
         unload_list.sort()
         for unload in unload_list:
             if memory_to_free < memory_freed:
@@ -529,32 +526,42 @@ class ModelPatcher:
             module_mem = unload[0]
             n = unload[1]
             m = unload[2]
-            weight_key = "{}.weight".format(n)
-            bias_key = "{}.bias".format(n)
+            params = unload[3]
 
+            lowvram_possible = hasattr(m, "comfy_cast_weights")
             if hasattr(m, "comfy_patched_weights") and m.comfy_patched_weights == True:
-                for key in [weight_key, bias_key]:
+                move_weight = True
+                for param in params:
+                    key = "{}.{}".format(n, param)
                     bk = self.backup.get(key, None)
                     if bk is not None:
+                        if not lowvram_possible:
+                            move_weight = False
+                            break
+
                         if bk.inplace_update:
                             comfy.utils.copy_to_param(self.model, key, bk.weight)
                         else:
                             comfy.utils.set_attr_param(self.model, key, bk.weight)
                         self.backup.pop(key)
 
-                m.to(device_to)
-                if weight_key in self.patches:
-                    m.weight_function = LowVramPatch(weight_key, self.patches)
-                    patch_counter += 1
-                if bias_key in self.patches:
-                    m.bias_function = LowVramPatch(bias_key, self.patches)
-                    patch_counter += 1
+                weight_key = "{}.weight".format(n)
+                bias_key = "{}.bias".format(n)
+                if move_weight:
+                    m.to(device_to)
+                    if lowvram_possible:
+                        if weight_key in self.patches:
+                            m.weight_function = LowVramPatch(weight_key, self.patches)
+                            patch_counter += 1
+                        if bias_key in self.patches:
+                            m.bias_function = LowVramPatch(bias_key, self.patches)
+                            patch_counter += 1
 
-                m.prev_comfy_cast_weights = m.comfy_cast_weights
-                m.comfy_cast_weights = True
-                m.comfy_patched_weights = False
-                memory_freed += module_mem
-                logging.debug("freed {}".format(n))
+                        m.prev_comfy_cast_weights = m.comfy_cast_weights
+                        m.comfy_cast_weights = True
+                    m.comfy_patched_weights = False
+                    memory_freed += module_mem
+                    logging.debug("freed {}".format(n))
 
         self.model.model_lowvram = True
         self.model.lowvram_patch_counter += patch_counter

comfy/supported_models.py

@@ -659,6 +659,15 @@ class Flux(supported_models_base.BASE):
         t5_detect = comfy.text_encoders.sd3_clip.t5_xxl_detect(state_dict, "{}t5xxl.transformer.".format(pref))
         return supported_models_base.ClipTarget(comfy.text_encoders.flux.FluxTokenizer, comfy.text_encoders.flux.flux_clip(**t5_detect))
 
+class FluxInpaint(Flux):
+    unet_config = {
+        "image_model": "flux",
+        "guidance_embed": True,
+        "in_channels": 96,
+    }
+
+    supported_inference_dtypes = [torch.bfloat16, torch.float32]
+
 class FluxSchnell(Flux):
     unet_config = {
         "image_model": "flux",
@@ -731,6 +740,6 @@ class LTXV(supported_models_base.BASE):
         t5_detect = comfy.text_encoders.sd3_clip.t5_xxl_detect(state_dict, "{}t5xxl.transformer.".format(pref))
         return supported_models_base.ClipTarget(comfy.text_encoders.lt.LTXVT5Tokenizer, comfy.text_encoders.lt.ltxv_te(**t5_detect))
 
-models = [Stable_Zero123, SD15_instructpix2pix, SD15, SD20, SD21UnclipL, SD21UnclipH, SDXL_instructpix2pix, SDXLRefiner, SDXL, SSD1B, KOALA_700M, KOALA_1B, Segmind_Vega, SD_X4Upscaler, Stable_Cascade_C, Stable_Cascade_B, SV3D_u, SV3D_p, SD3, StableAudio, AuraFlow, HunyuanDiT, HunyuanDiT1, Flux, FluxSchnell, GenmoMochi, LTXV]
+models = [Stable_Zero123, SD15_instructpix2pix, SD15, SD20, SD21UnclipL, SD21UnclipH, SDXL_instructpix2pix, SDXLRefiner, SDXL, SSD1B, KOALA_700M, KOALA_1B, Segmind_Vega, SD_X4Upscaler, Stable_Cascade_C, Stable_Cascade_B, SV3D_u, SV3D_p, SD3, StableAudio, AuraFlow, HunyuanDiT, HunyuanDiT1, FluxInpaint, Flux, FluxSchnell, GenmoMochi, LTXV]
 
 models += [SVD_img2vid]

comfy_extras/nodes_lt.py

@@ -10,7 +10,7 @@ class EmptyLTXVLatentVideo:
     def INPUT_TYPES(s):
         return {"required": { "width": ("INT", {"default": 768, "min": 64, "max": nodes.MAX_RESOLUTION, "step": 32}),
                               "height": ("INT", {"default": 512, "min": 64, "max": nodes.MAX_RESOLUTION, "step": 32}),
-                              "length": ("INT", {"default": 97, "min": 9, "max": nodes.MAX_RESOLUTION, "step": 8}),
+                              "length": ("INT", {"default": 97, "min": 1, "max": nodes.MAX_RESOLUTION, "step": 8}),
                               "batch_size": ("INT", {"default": 1, "min": 1, "max": 4096})}}
     RETURN_TYPES = ("LATENT",)
     FUNCTION = "generate"