Add ControlNet support.

comfy/cldm/cldm.py

@@ -0,0 +1,286 @@
+#taken from: https://github.com/lllyasviel/ControlNet
+#and modified
+
+import einops
+import torch
+import torch as th
+import torch.nn as nn
+
+from ldm.modules.diffusionmodules.util import (
+    conv_nd,
+    linear,
+    zero_module,
+    timestep_embedding,
+)
+
+from einops import rearrange, repeat
+from torchvision.utils import make_grid
+from ldm.modules.attention import SpatialTransformer
+from ldm.modules.diffusionmodules.openaimodel import UNetModel, TimestepEmbedSequential, ResBlock, Downsample, AttentionBlock
+from ldm.models.diffusion.ddpm import LatentDiffusion
+from ldm.util import log_txt_as_img, exists, instantiate_from_config
+
+
+class ControlledUnetModel(UNetModel):
+    #implemented in the ldm unet
+    pass
+
+class ControlNet(nn.Module):
+    def __init__(
+        self,
+        image_size,
+        in_channels,
+        model_channels,
+        hint_channels,
+        num_res_blocks,
+        attention_resolutions,
+        dropout=0,
+        channel_mult=(1, 2, 4, 8),
+        conv_resample=True,
+        dims=2,
+        use_checkpoint=False,
+        use_fp16=False,
+        num_heads=-1,
+        num_head_channels=-1,
+        num_heads_upsample=-1,
+        use_scale_shift_norm=False,
+        resblock_updown=False,
+        use_new_attention_order=False,
+        use_spatial_transformer=False,    # custom transformer support
+        transformer_depth=1,              # custom transformer support
+        context_dim=None,                 # custom transformer support
+        n_embed=None,                     # custom support for prediction of discrete ids into codebook of first stage vq model
+        legacy=True,
+        disable_self_attentions=None,
+        num_attention_blocks=None,
+        disable_middle_self_attn=False,
+        use_linear_in_transformer=False,
+    ):
+        super().__init__()
+        if use_spatial_transformer:
+            assert context_dim is not None, 'Fool!! You forgot to include the dimension of your cross-attention conditioning...'
+
+        if context_dim is not None:
+            assert use_spatial_transformer, 'Fool!! You forgot to use the spatial transformer for your cross-attention conditioning...'
+            from omegaconf.listconfig import ListConfig
+            if type(context_dim) == ListConfig:
+                context_dim = list(context_dim)
+
+        if num_heads_upsample == -1:
+            num_heads_upsample = num_heads
+
+        if num_heads == -1:
+            assert num_head_channels != -1, 'Either num_heads or num_head_channels has to be set'
+
+        if num_head_channels == -1:
+            assert num_heads != -1, 'Either num_heads or num_head_channels has to be set'
+
+        self.dims = dims
+        self.image_size = image_size
+        self.in_channels = in_channels
+        self.model_channels = model_channels
+        if isinstance(num_res_blocks, int):
+            self.num_res_blocks = len(channel_mult) * [num_res_blocks]
+        else:
+            if len(num_res_blocks) != len(channel_mult):
+                raise ValueError("provide num_res_blocks either as an int (globally constant) or "
+                                 "as a list/tuple (per-level) with the same length as channel_mult")
+            self.num_res_blocks = num_res_blocks
+        if disable_self_attentions is not None:
+            # should be a list of booleans, indicating whether to disable self-attention in TransformerBlocks or not
+            assert len(disable_self_attentions) == len(channel_mult)
+        if num_attention_blocks is not None:
+            assert len(num_attention_blocks) == len(self.num_res_blocks)
+            assert all(map(lambda i: self.num_res_blocks[i] >= num_attention_blocks[i], range(len(num_attention_blocks))))
+            print(f"Constructor of UNetModel received num_attention_blocks={num_attention_blocks}. "
+                  f"This option has LESS priority than attention_resolutions {attention_resolutions}, "
+                  f"i.e., in cases where num_attention_blocks[i] > 0 but 2**i not in attention_resolutions, "
+                  f"attention will still not be set.")
+
+        self.attention_resolutions = attention_resolutions
+        self.dropout = dropout
+        self.channel_mult = channel_mult
+        self.conv_resample = conv_resample
+        self.use_checkpoint = use_checkpoint
+        self.dtype = th.float16 if use_fp16 else th.float32
+        self.num_heads = num_heads
+        self.num_head_channels = num_head_channels
+        self.num_heads_upsample = num_heads_upsample
+        self.predict_codebook_ids = n_embed is not None
+
+        time_embed_dim = model_channels * 4
+        self.time_embed = nn.Sequential(
+            linear(model_channels, time_embed_dim),
+            nn.SiLU(),
+            linear(time_embed_dim, time_embed_dim),
+        )
+
+        self.input_blocks = nn.ModuleList(
+            [
+                TimestepEmbedSequential(
+                    conv_nd(dims, in_channels, model_channels, 3, padding=1)
+                )
+            ]
+        )
+        self.zero_convs = nn.ModuleList([self.make_zero_conv(model_channels)])
+
+        self.input_hint_block = TimestepEmbedSequential(
+                    conv_nd(dims, hint_channels, 16, 3, padding=1),
+                    nn.SiLU(),
+                    conv_nd(dims, 16, 16, 3, padding=1),
+                    nn.SiLU(),
+                    conv_nd(dims, 16, 32, 3, padding=1, stride=2),
+                    nn.SiLU(),
+                    conv_nd(dims, 32, 32, 3, padding=1),
+                    nn.SiLU(),
+                    conv_nd(dims, 32, 96, 3, padding=1, stride=2),
+                    nn.SiLU(),
+                    conv_nd(dims, 96, 96, 3, padding=1),
+                    nn.SiLU(),
+                    conv_nd(dims, 96, 256, 3, padding=1, stride=2),
+                    nn.SiLU(),
+                    zero_module(conv_nd(dims, 256, model_channels, 3, padding=1))
+        )
+
+        self._feature_size = model_channels
+        input_block_chans = [model_channels]
+        ch = model_channels
+        ds = 1
+        for level, mult in enumerate(channel_mult):
+            for nr in range(self.num_res_blocks[level]):
+                layers = [
+                    ResBlock(
+                        ch,
+                        time_embed_dim,
+                        dropout,
+                        out_channels=mult * model_channels,
+                        dims=dims,
+                        use_checkpoint=use_checkpoint,
+                        use_scale_shift_norm=use_scale_shift_norm,
+                    )
+                ]
+                ch = mult * model_channels
+                if ds in attention_resolutions:
+                    if num_head_channels == -1:
+                        dim_head = ch // num_heads
+                    else:
+                        num_heads = ch // num_head_channels
+                        dim_head = num_head_channels
+                    if legacy:
+                        #num_heads = 1
+                        dim_head = ch // num_heads if use_spatial_transformer else num_head_channels
+                    if exists(disable_self_attentions):
+                        disabled_sa = disable_self_attentions[level]
+                    else:
+                        disabled_sa = False
+
+                    if not exists(num_attention_blocks) or nr < num_attention_blocks[level]:
+                        layers.append(
+                            AttentionBlock(
+                                ch,
+                                use_checkpoint=use_checkpoint,
+                                num_heads=num_heads,
+                                num_head_channels=dim_head,
+                                use_new_attention_order=use_new_attention_order,
+                            ) if not use_spatial_transformer else SpatialTransformer(
+                                ch, num_heads, dim_head, depth=transformer_depth, context_dim=context_dim,
+                                disable_self_attn=disabled_sa, use_linear=use_linear_in_transformer,
+                                use_checkpoint=use_checkpoint
+                            )
+                        )
+                self.input_blocks.append(TimestepEmbedSequential(*layers))
+                self.zero_convs.append(self.make_zero_conv(ch))
+                self._feature_size += ch
+                input_block_chans.append(ch)
+            if level != len(channel_mult) - 1:
+                out_ch = ch
+                self.input_blocks.append(
+                    TimestepEmbedSequential(
+                        ResBlock(
+                            ch,
+                            time_embed_dim,
+                            dropout,
+                            out_channels=out_ch,
+                            dims=dims,
+                            use_checkpoint=use_checkpoint,
+                            use_scale_shift_norm=use_scale_shift_norm,
+                            down=True,
+                        )
+                        if resblock_updown
+                        else Downsample(
+                            ch, conv_resample, dims=dims, out_channels=out_ch
+                        )
+                    )
+                )
+                ch = out_ch
+                input_block_chans.append(ch)
+                self.zero_convs.append(self.make_zero_conv(ch))
+                ds *= 2
+                self._feature_size += ch
+
+        if num_head_channels == -1:
+            dim_head = ch // num_heads
+        else:
+            num_heads = ch // num_head_channels
+            dim_head = num_head_channels
+        if legacy:
+            #num_heads = 1
+            dim_head = ch // num_heads if use_spatial_transformer else num_head_channels
+        self.middle_block = TimestepEmbedSequential(
+            ResBlock(
+                ch,
+                time_embed_dim,
+                dropout,
+                dims=dims,
+                use_checkpoint=use_checkpoint,
+                use_scale_shift_norm=use_scale_shift_norm,
+            ),
+            AttentionBlock(
+                ch,
+                use_checkpoint=use_checkpoint,
+                num_heads=num_heads,
+                num_head_channels=dim_head,
+                use_new_attention_order=use_new_attention_order,
+            ) if not use_spatial_transformer else SpatialTransformer(  # always uses a self-attn
+                            ch, num_heads, dim_head, depth=transformer_depth, context_dim=context_dim,
+                            disable_self_attn=disable_middle_self_attn, use_linear=use_linear_in_transformer,
+                            use_checkpoint=use_checkpoint
+                        ),
+            ResBlock(
+                ch,
+                time_embed_dim,
+                dropout,
+                dims=dims,
+                use_checkpoint=use_checkpoint,
+                use_scale_shift_norm=use_scale_shift_norm,
+            ),
+        )
+        self.middle_block_out = self.make_zero_conv(ch)
+        self._feature_size += ch
+
+    def make_zero_conv(self, channels):
+        return TimestepEmbedSequential(zero_module(conv_nd(self.dims, channels, channels, 1, padding=0)))
+
+    def forward(self, x, hint, timesteps, context, **kwargs):
+        t_emb = timestep_embedding(timesteps, self.model_channels, repeat_only=False)
+        emb = self.time_embed(t_emb)
+
+        guided_hint = self.input_hint_block(hint, emb, context)
+
+        outs = []
+
+        h = x.type(self.dtype)
+        for module, zero_conv in zip(self.input_blocks, self.zero_convs):
+            if guided_hint is not None:
+                h = module(h, emb, context)
+                h += guided_hint
+                guided_hint = None
+            else:
+                h = module(h, emb, context)
+            outs.append(zero_conv(h, emb, context))
+
+        h = self.middle_block(h, emb, context)
+        outs.append(self.middle_block_out(h, emb, context))
+
+        return outs
+

comfy/extra_samplers/uni_pc.py

@@ -856,13 +856,13 @@ def sample_unipc(model, noise, image, sigmas, sampling_function, extra_args=None
 
         device = noise.device
 
-        if model.inner_model.parameterization == "v":
+        if model.parameterization == "v":
             model_type = "v"
         else:
             model_type = "noise"
 
         model_fn = model_wrapper(
-            model.inner_model.apply_model,
+            model.inner_model.inner_model.apply_model,
             sampling_function,
             ns,
             model_type=model_type,

comfy/ldm/models/diffusion/ddpm.py

@@ -1320,12 +1320,12 @@ class DiffusionWrapper(torch.nn.Module):
         self.conditioning_key = conditioning_key
         assert self.conditioning_key in [None, 'concat', 'crossattn', 'hybrid', 'adm', 'hybrid-adm', 'crossattn-adm']
 
-    def forward(self, x, t, c_concat: list = None, c_crossattn: list = None, c_adm=None):
+    def forward(self, x, t, c_concat: list = None, c_crossattn: list = None, c_adm=None, control=None):
         if self.conditioning_key is None:
-            out = self.diffusion_model(x, t)
+            out = self.diffusion_model(x, t, control=control)
         elif self.conditioning_key == 'concat':
             xc = torch.cat([x] + c_concat, dim=1)
-            out = self.diffusion_model(xc, t)
+            out = self.diffusion_model(xc, t, control=control)
         elif self.conditioning_key == 'crossattn':
             if not self.sequential_cross_attn:
                 cc = torch.cat(c_crossattn, 1)
@@ -1335,25 +1335,25 @@ class DiffusionWrapper(torch.nn.Module):
                 # TorchScript changes names of the arguments
                 # with argument cc defined as context=cc scripted model will produce
                 # an error: RuntimeError: forward() is missing value for argument 'argument_3'.
-                out = self.scripted_diffusion_model(x, t, cc)
+                out = self.scripted_diffusion_model(x, t, cc, control=control)
             else:
-                out = self.diffusion_model(x, t, context=cc)
+                out = self.diffusion_model(x, t, context=cc, control=control)
         elif self.conditioning_key == 'hybrid':
             xc = torch.cat([x] + c_concat, dim=1)
             cc = torch.cat(c_crossattn, 1)
-            out = self.diffusion_model(xc, t, context=cc)
+            out = self.diffusion_model(xc, t, context=cc, control=control)
         elif self.conditioning_key == 'hybrid-adm':
             assert c_adm is not None
             xc = torch.cat([x] + c_concat, dim=1)
             cc = torch.cat(c_crossattn, 1)
-            out = self.diffusion_model(xc, t, context=cc, y=c_adm)
+            out = self.diffusion_model(xc, t, context=cc, y=c_adm, control=control)
         elif self.conditioning_key == 'crossattn-adm':
             assert c_adm is not None
             cc = torch.cat(c_crossattn, 1)
-            out = self.diffusion_model(x, t, context=cc, y=c_adm)
+            out = self.diffusion_model(x, t, context=cc, y=c_adm, control=control)
         elif self.conditioning_key == 'adm':
             cc = c_crossattn[0]
-            out = self.diffusion_model(x, t, y=cc)
+            out = self.diffusion_model(x, t, y=cc, control=control)
         else:
             raise NotImplementedError()
 

comfy/ldm/modules/diffusionmodules/openaimodel.py

@@ -753,7 +753,7 @@ class UNetModel(nn.Module):
         self.middle_block.apply(convert_module_to_f32)
         self.output_blocks.apply(convert_module_to_f32)
 
-    def forward(self, x, timesteps=None, context=None, y=None,**kwargs):
+    def forward(self, x, timesteps=None, context=None, y=None, control=None, **kwargs):
         """
         Apply the model to an input batch.
         :param x: an [N x C x ...] Tensor of inputs.
@@ -778,8 +778,14 @@ class UNetModel(nn.Module):
             h = module(h, emb, context)
             hs.append(h)
         h = self.middle_block(h, emb, context)
+        if control is not None:
+            h += control.pop()
+
         for module in self.output_blocks:
-            h = th.cat([h, hs.pop()], dim=1)
+            hsp = hs.pop()
+            if control is not None:
+                hsp += control.pop()
+            h = th.cat([h, hsp], dim=1)
             h = module(h, emb, context)
         h = h.type(x.dtype)
         if self.predict_codebook_ids:

comfy/model_management.py

@@ -48,7 +48,7 @@ print("Set vram state to:", ["CPU", "NO VRAM", "LOW VRAM", "NORMAL VRAM"][vram_s
 
 
 current_loaded_model = None
-
+current_gpu_controlnets = []
 
 model_accelerated = False
 
@@ -56,6 +56,7 @@ model_accelerated = False
 def unload_model():
     global current_loaded_model
     global model_accelerated
+    global current_gpu_controlnets
     if current_loaded_model is not None:
         if model_accelerated:
             accelerate.hooks.remove_hook_from_submodules(current_loaded_model.model)
@@ -64,6 +65,10 @@ def unload_model():
         current_loaded_model.model.cpu()
         current_loaded_model.unpatch_model()
         current_loaded_model = None
+    if len(current_gpu_controlnets) > 0:
+        for n in current_gpu_controlnets:
+            n.cpu()
+        current_gpu_controlnets = []
 
 
 def load_model_gpu(model):
@@ -95,6 +100,16 @@ def load_model_gpu(model):
         model_accelerated = True
     return current_loaded_model
 
+def load_controlnet_gpu(models):
+    global current_gpu_controlnets
+    for m in current_gpu_controlnets:
+        if m not in models:
+            m.cpu()
+
+    current_gpu_controlnets = []
+    for m in models:
+        current_gpu_controlnets.append(m.cuda())
+
 
 def get_free_memory():
     dev = torch.cuda.current_device()

comfy/samplers.py

@@ -21,12 +21,13 @@ class CFGDenoiser(torch.nn.Module):
             uncond = self.inner_model(x, sigma, cond=uncond)
         return uncond + (cond - uncond) * cond_scale
 
-def sampling_function(model_function, x, sigma, uncond, cond, cond_scale, cond_concat=None):
-        def get_area_and_mult(cond, x_in, cond_concat_in):
+
+#The main sampling function shared by all the samplers
+#Returns predicted noise
+def sampling_function(model_function, x, timestep, uncond, cond, cond_scale, cond_concat=None):
+        def get_area_and_mult(cond, x_in, cond_concat_in, timestep_in):
             area = (x_in.shape[2], x_in.shape[3], 0, 0)
             strength = 1.0
-            min_sigma = 0.0
-            max_sigma = 999.0
             if 'area' in cond[1]:
                 area = cond[1]['area']
             if 'strength' in cond[1]:
@@ -56,9 +57,15 @@ def sampling_function(model_function, x, sigma, uncond, cond, cond_scale, cond_c
                     cr = x[:,:,area[2]:area[0] + area[2],area[3]:area[1] + area[3]]
                     cropped.append(cr)
                 conditionning['c_concat'] = torch.cat(cropped, dim=1)
-            return (input_x, mult, conditionning, area)
+
+            control = None
+            if 'control' in cond[1]:
+                control = cond[1]['control']
+            return (input_x, mult, conditionning, area, control)
 
         def cond_equal_size(c1, c2):
+            if c1 is c2:
+                return True
             if c1.keys() != c2.keys():
                 return False
             if 'c_crossattn' in c1:
@@ -69,6 +76,17 @@ def sampling_function(model_function, x, sigma, uncond, cond, cond_scale, cond_c
                     return False
             return True
 
+        def can_concat_cond(c1, c2):
+            if c1[0].shape != c2[0].shape:
+                return False
+            if (c1[4] is None) != (c2[4] is None):
+                return False
+            if c1[4] is not None:
+                if c1[4] is not c2[4]:
+                    return False
+
+            return cond_equal_size(c1[2], c2[2])
+
         def cond_cat(c_list):
             c_crossattn = []
             c_concat = []
@@ -84,7 +102,7 @@ def sampling_function(model_function, x, sigma, uncond, cond, cond_scale, cond_c
                 out['c_concat'] = [torch.cat(c_concat)]
             return out
 
-        def calc_cond_uncond_batch(model_function, cond, uncond, x_in, sigma, max_total_area, cond_concat_in):
+        def calc_cond_uncond_batch(model_function, cond, uncond, x_in, timestep, max_total_area, cond_concat_in):
             out_cond = torch.zeros_like(x_in)
             out_count = torch.ones_like(x_in)/100000.0
 
@@ -96,13 +114,13 @@ def sampling_function(model_function, x, sigma, uncond, cond, cond_scale, cond_c
 
             to_run = []
             for x in cond:
-                p = get_area_and_mult(x, x_in, cond_concat_in)
+                p = get_area_and_mult(x, x_in, cond_concat_in, timestep)
                 if p is None:
                     continue
 
                 to_run += [(p, COND)]
             for x in uncond:
-                p = get_area_and_mult(x, x_in, cond_concat_in)
+                p = get_area_and_mult(x, x_in, cond_concat_in, timestep)
                 if p is None:
                     continue
 
@@ -113,9 +131,8 @@ def sampling_function(model_function, x, sigma, uncond, cond, cond_scale, cond_c
                 first_shape = first[0][0].shape
                 to_batch_temp = []
                 for x in range(len(to_run)):
-                    if to_run[x][0][0].shape == first_shape:
-                        if cond_equal_size(to_run[x][0][2], first[0][2]):
-                            to_batch_temp += [x]
+                    if can_concat_cond(to_run[x][0], first[0]):
+                        to_batch_temp += [x]
 
                 to_batch_temp.reverse()
                 to_batch = to_batch_temp[:1]
@@ -131,6 +148,7 @@ def sampling_function(model_function, x, sigma, uncond, cond, cond_scale, cond_c
                 c = []
                 cond_or_uncond = []
                 area = []
+                control = None
                 for x in to_batch:
                     o = to_run.pop(x)
                     p = o[0]
@@ -139,13 +157,17 @@ def sampling_function(model_function, x, sigma, uncond, cond, cond_scale, cond_c
                     c += [p[2]]
                     area += [p[3]]
                     cond_or_uncond += [o[1]]
+                    control = p[4]
 
                 batch_chunks = len(cond_or_uncond)
                 input_x = torch.cat(input_x)
                 c = cond_cat(c)
-                sigma_ = torch.cat([sigma] * batch_chunks)
+                timestep_ = torch.cat([timestep] * batch_chunks)
 
-                output = model_function(input_x, sigma_, cond=c).chunk(batch_chunks)
+                if control is not None:
+                    c['control'] = control.get_control(input_x, timestep_, c['c_crossattn'])
+
+                output = model_function(input_x, timestep_, cond=c).chunk(batch_chunks)
                 del input_x
 
                 for o in range(batch_chunks):
@@ -166,10 +188,29 @@ def sampling_function(model_function, x, sigma, uncond, cond, cond_scale, cond_c
 
 
         max_total_area = model_management.maximum_batch_area()
-        cond, uncond = calc_cond_uncond_batch(model_function, cond, uncond, x, sigma, max_total_area, cond_concat)
+        cond, uncond = calc_cond_uncond_batch(model_function, cond, uncond, x, timestep, max_total_area, cond_concat)
         return uncond + (cond - uncond) * cond_scale
 
-class CFGDenoiserComplex(torch.nn.Module):
+
+class CompVisVDenoiser(k_diffusion_external.DiscreteVDDPMDenoiser):
+    def __init__(self, model, quantize=False, device='cpu'):
+        super().__init__(model, model.alphas_cumprod, quantize=quantize)
+
+    def get_v(self, x, t, cond, **kwargs):
+        return self.inner_model.apply_model(x, t, cond, **kwargs)
+
+
+class CFGNoisePredictor(torch.nn.Module):
+    def __init__(self, model):
+        super().__init__()
+        self.inner_model = model
+        self.alphas_cumprod = model.alphas_cumprod
+    def apply_model(self, x, timestep, cond, uncond, cond_scale, cond_concat=None):
+        out = sampling_function(self.inner_model.apply_model, x, timestep, uncond, cond, cond_scale, cond_concat)
+        return out
+
+
+class KSamplerX0Inpaint(torch.nn.Module):
     def __init__(self, model):
         super().__init__()
         self.inner_model = model
@@ -177,7 +218,7 @@ class CFGDenoiserComplex(torch.nn.Module):
         if denoise_mask is not None:
             latent_mask = 1. - denoise_mask
             x = x * denoise_mask + (self.latent_image + self.noise * sigma) * latent_mask
-        out = sampling_function(self.inner_model, x, sigma, uncond, cond, cond_scale, cond_concat)
+        out = self.inner_model(x, sigma, cond=cond, uncond=uncond, cond_scale=cond_scale, cond_concat=cond_concat)
         if denoise_mask is not None:
             out *= denoise_mask
 
@@ -196,8 +237,6 @@ def simple_scheduler(model, steps):
 def blank_inpaint_image_like(latent_image):
     blank_image = torch.ones_like(latent_image)
     # these are the values for "zero" in pixel space translated to latent space
-    # the proper way to do this is to apply the mask to the image in pixel space and then send it through the VAE
-    # unfortunately that gives zero flexibility so I did things like this instead which hopefully works
     blank_image[:,0] *= 0.8223
     blank_image[:,1] *= -0.6876
     blank_image[:,2] *= 0.6364
@@ -234,6 +273,42 @@ def create_cond_with_same_area_if_none(conds, c):
     n = c[1].copy()
     conds += [[smallest[0], n]]
 
+
+def apply_control_net_to_equal_area(conds, uncond):
+    cond_cnets = []
+    cond_other = []
+    uncond_cnets = []
+    uncond_other = []
+    for t in range(len(conds)):
+        x = conds[t]
+        if 'area' not in x[1]:
+            if 'control' in x[1] and x[1]['control'] is not None:
+                cond_cnets.append(x[1]['control'])
+            else:
+                cond_other.append((x, t))
+    for t in range(len(uncond)):
+        x = uncond[t]
+        if 'area' not in x[1]:
+            if 'control' in x[1] and x[1]['control'] is not None:
+                uncond_cnets.append(x[1]['control'])
+            else:
+                uncond_other.append((x, t))
+
+    if len(uncond_cnets) > 0:
+        return
+
+    for x in range(len(cond_cnets)):
+        temp = uncond_other[x % len(uncond_other)]
+        o = temp[0]
+        if 'control' in o[1] and o[1]['control'] is not None:
+            n = o[1].copy()
+            n['control'] = cond_cnets[x]
+            uncond += [[o[0], n]]
+        else:
+            n = o[1].copy()
+            n['control'] = cond_cnets[x]
+            uncond[temp[1]] = [o[0], n]
+
 class KSampler:
     SCHEDULERS = ["karras", "normal", "simple"]
     SAMPLERS = ["sample_euler", "sample_euler_ancestral", "sample_heun", "sample_dpm_2", "sample_dpm_2_ancestral",
@@ -242,11 +317,13 @@ class KSampler:
 
     def __init__(self, model, steps, device, sampler=None, scheduler=None, denoise=None):
         self.model = model
+        self.model_denoise = CFGNoisePredictor(self.model)
         if self.model.parameterization == "v":
-            self.model_wrap = k_diffusion_external.CompVisVDenoiser(self.model, quantize=True)
+            self.model_wrap = CompVisVDenoiser(self.model_denoise, quantize=True)
         else:
-            self.model_wrap = k_diffusion_external.CompVisDenoiser(self.model, quantize=True)
-        self.model_k = CFGDenoiserComplex(self.model_wrap)
+            self.model_wrap = k_diffusion_external.CompVisDenoiser(self.model_denoise, quantize=True)
+        self.model_wrap.parameterization = self.model.parameterization
+        self.model_k = KSamplerX0Inpaint(self.model_wrap)
         self.device = device
         if scheduler not in self.SCHEDULERS:
             scheduler = self.SCHEDULERS[0]
@@ -316,6 +393,8 @@ class KSampler:
         for c in negative:
             create_cond_with_same_area_if_none(positive, c)
 
+        apply_control_net_to_equal_area(positive, negative)
+
         if self.model.model.diffusion_model.dtype == torch.float16:
             precision_scope = torch.autocast
         else:

comfy/sd.py

@@ -6,6 +6,9 @@ import model_management
 from ldm.util import instantiate_from_config
 from ldm.models.autoencoder import AutoencoderKL
 from omegaconf import OmegaConf
+from .cldm import cldm
+
+from . import utils
 
 def load_torch_file(ckpt):
     if ckpt.lower().endswith(".safetensors"):
@@ -323,6 +326,79 @@ class VAE:
         samples = samples.cpu()
         return samples
 
+class ControlNet:
+    def __init__(self, control_model):
+        self.control_model = control_model
+        self.cond_hint_original = None
+        self.cond_hint = None
+
+    def get_control(self, x_noisy, t, cond_txt):
+        if self.cond_hint is None or x_noisy.shape[2] * 8 != self.cond_hint.shape[2] or x_noisy.shape[3] * 8 != self.cond_hint.shape[3]:
+            if self.cond_hint is not None:
+                del self.cond_hint
+            self.cond_hint = None
+            self.cond_hint = utils.common_upscale(self.cond_hint_original, x_noisy.shape[3] * 8, x_noisy.shape[2] * 8, 'nearest-exact', "center").to(x_noisy.device)
+            print("set cond_hint", self.cond_hint.shape)
+        control = self.control_model(x=x_noisy, hint=self.cond_hint, timesteps=t, context=cond_txt)
+        return control
+
+    def set_cond_hint(self, cond_hint):
+        self.cond_hint_original = cond_hint
+        return self
+
+    def cleanup(self):
+        if self.cond_hint is not None:
+            del self.cond_hint
+            self.cond_hint = None
+
+    def copy(self):
+        c = ControlNet(self.control_model)
+        c.cond_hint_original = self.cond_hint_original
+        return c
+
+def load_controlnet(ckpt_path):
+    controlnet_data = load_torch_file(ckpt_path)
+    pth_key = 'control_model.input_blocks.1.1.transformer_blocks.0.attn2.to_k.weight'
+    pth = False
+    sd2 = False
+    key = 'input_blocks.1.1.transformer_blocks.0.attn2.to_k.weight'
+    if pth_key in controlnet_data:
+        pth = True
+        key = pth_key
+    elif key in controlnet_data:
+        pass
+    else:
+        print("error checkpoint does not contain controlnet data", ckpt_path)
+        return None
+
+    context_dim = controlnet_data[key].shape[1]
+    control_model = cldm.ControlNet(image_size=32,
+                                    in_channels=4,
+                                    hint_channels=3,
+                                    model_channels=320,
+                                    attention_resolutions=[ 4, 2, 1 ],
+                                    num_res_blocks=2,
+                                    channel_mult=[ 1, 2, 4, 4 ],
+                                    num_heads=8,
+                                    use_spatial_transformer=True,
+                                    transformer_depth=1,
+                                    context_dim=context_dim,
+                                    use_checkpoint=True,
+                                    legacy=False)
+
+    if pth:
+        class WeightsLoader(torch.nn.Module):
+            pass
+        w = WeightsLoader()
+        w.control_model = control_model
+        w.load_state_dict(controlnet_data, strict=False)
+    else:
+        control_model.load_state_dict(controlnet_data, strict=False)
+
+    control = ControlNet(control_model)
+    return control
+
+
 def load_clip(ckpt_path, embedding_directory=None):
     clip_data = load_torch_file(ckpt_path)
     config = {}

comfy/utils.py

@@ -0,0 +1,18 @@
+import torch
+
+def common_upscale(samples, width, height, upscale_method, crop):
+        if crop == "center":
+            old_width = samples.shape[3]
+            old_height = samples.shape[2]
+            old_aspect = old_width / old_height
+            new_aspect = width / height
+            x = 0
+            y = 0
+            if old_aspect > new_aspect:
+                x = round((old_width - old_width * (new_aspect / old_aspect)) / 2)
+            elif old_aspect < new_aspect:
+                y = round((old_height - old_height * (old_aspect / new_aspect)) / 2)
+            s = samples[:,:,y:old_height-y,x:old_width-x]
+        else:
+            s = samples
+        return torch.nn.functional.interpolate(s, size=(height, width), mode=upscale_method)

nodes.py

@@ -15,10 +15,12 @@ sys.path.insert(0, os.path.join(sys.path[0], "comfy"))
 
 import comfy.samplers
 import comfy.sd
+import comfy.utils
+
 import model_management
 
-supported_ckpt_extensions = ['.ckpt']
-supported_pt_extensions = ['.ckpt', '.pt', '.bin']
+supported_ckpt_extensions = ['.ckpt', '.pth']
+supported_pt_extensions = ['.ckpt', '.pt', '.bin', '.pth']
 try:
     import safetensors.torch
     supported_ckpt_extensions += ['.safetensors']
@@ -77,12 +79,14 @@ class ConditioningSetArea:
     CATEGORY = "conditioning"
 
     def append(self, conditioning, width, height, x, y, strength, min_sigma=0.0, max_sigma=99.0):
-        c = copy.deepcopy(conditioning)
-        for t in c:
-            t[1]['area'] = (height // 8, width // 8, y // 8, x // 8)
-            t[1]['strength'] = strength
-            t[1]['min_sigma'] = min_sigma
-            t[1]['max_sigma'] = max_sigma
+        c = []
+        for t in conditioning:
+            n = [t[0], t[1].copy()]
+            n[1]['area'] = (height // 8, width // 8, y // 8, x // 8)
+            n[1]['strength'] = strength
+            n[1]['min_sigma'] = min_sigma
+            n[1]['max_sigma'] = max_sigma
+            c.append(n)
         return (c, )
 
 class VAEDecode:
@@ -134,7 +138,6 @@ class VAEEncodeForInpaint:
     CATEGORY = "latent/inpaint"
 
     def encode(self, vae, pixels, mask):
-        print(pixels.shape, mask.shape)
         x = (pixels.shape[1] // 64) * 64
         y = (pixels.shape[2] // 64) * 64
         if pixels.shape[1] != x or pixels.shape[2] != y:
@@ -144,7 +147,6 @@ class VAEEncodeForInpaint:
         #shave off a few pixels to keep things seamless
         kernel_tensor = torch.ones((1, 1, 6, 6))
         mask_erosion = torch.clamp(torch.nn.functional.conv2d((1.0 - mask.round())[None], kernel_tensor, padding=3), 0, 1)
-        print(mask_erosion.shape, pixels.shape)
         for i in range(3):
             pixels[:,:,:,i] -= 0.5
             pixels[:,:,:,i] *= mask_erosion[0][:x,:y].round()
@@ -211,6 +213,44 @@ class VAELoader:
         vae = comfy.sd.VAE(ckpt_path=vae_path)
         return (vae,)
 
+class ControlNetLoader:
+    models_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "models")
+    controlnet_dir = os.path.join(models_dir, "controlnet")
+    @classmethod
+    def INPUT_TYPES(s):
+        return {"required": { "control_net_name": (filter_files_extensions(recursive_search(s.controlnet_dir), supported_pt_extensions), )}}
+
+    RETURN_TYPES = ("CONTROL_NET",)
+    FUNCTION = "load_controlnet"
+
+    CATEGORY = "loaders"
+
+    def load_controlnet(self, control_net_name):
+        controlnet_path = os.path.join(self.controlnet_dir, control_net_name)
+        controlnet = comfy.sd.load_controlnet(controlnet_path)
+        return (controlnet,)
+
+
+class ControlNetApply:
+    @classmethod
+    def INPUT_TYPES(s):
+        return {"required": {"conditioning": ("CONDITIONING", ), "control_net": ("CONTROL_NET", ), "image": ("IMAGE", )}}
+    RETURN_TYPES = ("CONDITIONING",)
+    FUNCTION = "apply_controlnet"
+
+    CATEGORY = "conditioning"
+
+    def apply_controlnet(self, conditioning, control_net, image):
+        c = []
+        control_hint = image.movedim(-1,1)
+        print(control_hint.shape)
+        for t in conditioning:
+            n = [t[0], t[1].copy()]
+            n[1]['control'] = control_net.copy().set_cond_hint(control_hint)
+            c.append(n)
+        return (c, )
+
+
 class CLIPLoader:
     models_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "models")
     clip_dir = os.path.join(models_dir, "clip")
@@ -248,22 +288,7 @@ class EmptyLatentImage:
         latent = torch.zeros([batch_size, 4, height // 8, width // 8])
         return ({"samples":latent}, )
 
-def common_upscale(samples, width, height, upscale_method, crop):
-        if crop == "center":
-            old_width = samples.shape[3]
-            old_height = samples.shape[2]
-            old_aspect = old_width / old_height
-            new_aspect = width / height
-            x = 0
-            y = 0
-            if old_aspect > new_aspect:
-                x = round((old_width - old_width * (new_aspect / old_aspect)) / 2)
-            elif old_aspect < new_aspect:
-                y = round((old_height - old_height * (old_aspect / new_aspect)) / 2)
-            s = samples[:,:,y:old_height-y,x:old_width-x]
-        else:
-            s = samples
-        return torch.nn.functional.interpolate(s, size=(height, width), mode=upscale_method)
+
 
 class LatentUpscale:
     upscale_methods = ["nearest-exact", "bilinear", "area"]
@@ -282,7 +307,7 @@ class LatentUpscale:
 
     def upscale(self, samples, upscale_method, width, height, crop):
         s = samples.copy()
-        s["samples"] = common_upscale(samples["samples"], width // 8, height // 8, upscale_method, crop)
+        s["samples"] = comfy.utils.common_upscale(samples["samples"], width // 8, height // 8, upscale_method, crop)
         return (s,)
 
 class LatentRotate:
@@ -461,19 +486,26 @@ def common_ksampler(device, model, seed, steps, cfg, sampler_name, scheduler, po
     positive_copy = []
     negative_copy = []
 
+    control_nets = []
     for p in positive:
         t = p[0]
         if t.shape[0] < noise.shape[0]:
             t = torch.cat([t] * noise.shape[0])
         t = t.to(device)
+        if 'control' in p[1]:
+            control_nets += [p[1]['control']]
         positive_copy += [[t] + p[1:]]
     for n in negative:
         t = n[0]
         if t.shape[0] < noise.shape[0]:
             t = torch.cat([t] * noise.shape[0])
         t = t.to(device)
+        if 'control' in p[1]:
+            control_nets += [p[1]['control']]
         negative_copy += [[t] + n[1:]]
 
+    model_management.load_controlnet_gpu(list(map(lambda a: a.control_model, control_nets)))
+
     if sampler_name in comfy.samplers.KSampler.SAMPLERS:
         sampler = comfy.samplers.KSampler(real_model, steps=steps, device=device, sampler=sampler_name, scheduler=scheduler, denoise=denoise)
     else:
@@ -482,6 +514,9 @@ def common_ksampler(device, model, seed, steps, cfg, sampler_name, scheduler, po
 
     samples = sampler.sample(noise, positive_copy, negative_copy, cfg=cfg, latent_image=latent_image, start_step=start_step, last_step=last_step, force_full_denoise=force_full_denoise, denoise_mask=noise_mask)
     samples = samples.cpu()
+    for c in control_nets:
+        c.cleanup()
+
     out = latent.copy()
     out["samples"] = samples
     return (out, )
@@ -676,7 +711,7 @@ class ImageScale:
 
     def upscale(self, image, upscale_method, width, height, crop):
         samples = image.movedim(-1,1)
-        s = common_upscale(samples, width, height, upscale_method, crop)
+        s = comfy.utils.common_upscale(samples, width, height, upscale_method, crop)
         s = s.movedim(1,-1)
         return (s,)
 
@@ -704,6 +739,8 @@ NODE_CLASS_MAPPINGS = {
     "LatentCrop": LatentCrop,
     "LoraLoader": LoraLoader,
     "CLIPLoader": CLIPLoader,
+    "ControlNetApply": ControlNetApply,
+    "ControlNetLoader": ControlNetLoader,
 }