Controlnet ssd 1b support (#5779)

* Add SSD-1B support for controlnet model

* Add conditioning_channels into ControlNet init from unet

* Fix black formatting

* Isort fixes

* Adds SSD-1B controlnet pipeline test with UNetMidBlock2D as mid block

* Overrides failing ssd-1b tests

* Fixes tests after main branch update

* Fixes code quality checks

---------
Co-authored-by: Marko Kostiv <marko@linearity.io>
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>

src/diffusers/models/controlnet.py

@@ -30,12 +30,7 @@ from .attention_processor import (
 )
 from .embeddings import TextImageProjection, TextImageTimeEmbedding, TextTimeEmbedding, TimestepEmbedding, Timesteps
 from .modeling_utils import ModelMixin
-from .unet_2d_blocks import (
-    CrossAttnDownBlock2D,
-    DownBlock2D,
-    UNetMidBlock2DCrossAttn,
-    get_down_block,
-)
+from .unet_2d_blocks import CrossAttnDownBlock2D, DownBlock2D, UNetMidBlock2D, UNetMidBlock2DCrossAttn, get_down_block
 from .unet_2d_condition import UNet2DConditionModel
 
 
@@ -191,6 +186,7 @@ class ControlNetModel(ModelMixin, ConfigMixin, FromOriginalControlnetMixin):
             "CrossAttnDownBlock2D",
             "DownBlock2D",
         ),
+        mid_block_type: Optional[str] = "UNetMidBlock2DCrossAttn",
         only_cross_attention: Union[bool, Tuple[bool]] = False,
         block_out_channels: Tuple[int, ...] = (320, 640, 1280, 1280),
         layers_per_block: int = 2,
@@ -409,6 +405,7 @@ class ControlNetModel(ModelMixin, ConfigMixin, FromOriginalControlnetMixin):
         controlnet_block = zero_module(controlnet_block)
         self.controlnet_mid_block = controlnet_block
 
+        if mid_block_type == "UNetMidBlock2DCrossAttn":
             self.mid_block = UNetMidBlock2DCrossAttn(
                 transformer_layers_per_block=transformer_layers_per_block[-1],
                 in_channels=mid_block_channel,
@@ -423,6 +420,20 @@ class ControlNetModel(ModelMixin, ConfigMixin, FromOriginalControlnetMixin):
                 use_linear_projection=use_linear_projection,
                 upcast_attention=upcast_attention,
             )
+        elif mid_block_type == "UNetMidBlock2D":
+            self.mid_block = UNetMidBlock2D(
+                in_channels=block_out_channels[-1],
+                temb_channels=time_embed_dim,
+                num_layers=0,
+                resnet_eps=norm_eps,
+                resnet_act_fn=act_fn,
+                output_scale_factor=mid_block_scale_factor,
+                resnet_groups=norm_num_groups,
+                resnet_time_scale_shift=resnet_time_scale_shift,
+                add_attention=False,
+            )
+        else:
+            raise ValueError(f"unknown mid_block_type : {mid_block_type}")
 
     @classmethod
     def from_unet(
@@ -431,6 +442,7 @@ class ControlNetModel(ModelMixin, ConfigMixin, FromOriginalControlnetMixin):
         controlnet_conditioning_channel_order: str = "rgb",
         conditioning_embedding_out_channels: Optional[Tuple[int, ...]] = (16, 32, 96, 256),
         load_weights_from_unet: bool = True,
+        conditioning_channels: int = 3,
     ):
         r"""
         Instantiate a [`ControlNetModel`] from [`UNet2DConditionModel`].
@@ -477,8 +489,10 @@ class ControlNetModel(ModelMixin, ConfigMixin, FromOriginalControlnetMixin):
             upcast_attention=unet.config.upcast_attention,
             resnet_time_scale_shift=unet.config.resnet_time_scale_shift,
             projection_class_embeddings_input_dim=unet.config.projection_class_embeddings_input_dim,
+            mid_block_type=unet.config.mid_block_type,
             controlnet_conditioning_channel_order=controlnet_conditioning_channel_order,
             conditioning_embedding_out_channels=conditioning_embedding_out_channels,
+            conditioning_channels=conditioning_channels,
         )
 
         if load_weights_from_unet:
@@ -797,6 +811,7 @@ class ControlNetModel(ModelMixin, ConfigMixin, FromOriginalControlnetMixin):
 
         # 4. mid
         if self.mid_block is not None:
+            if hasattr(self.mid_block, "has_cross_attention") and self.mid_block.has_cross_attention:
                 sample = self.mid_block(
                     sample,
                     emb,
@@ -804,6 +819,8 @@ class ControlNetModel(ModelMixin, ConfigMixin, FromOriginalControlnetMixin):
                     attention_mask=attention_mask,
                     cross_attention_kwargs=cross_attention_kwargs,
                 )
+            else:
+                sample = self.mid_block(sample, emb)
 
         # 5. Control net blocks
 

tests/pipelines/controlnet/test_controlnet_sdxl.py

@@ -28,6 +28,7 @@ from diffusers import (
     StableDiffusionXLControlNetPipeline,
     UNet2DConditionModel,
 )
+from diffusers.models.unet_2d_blocks import UNetMidBlock2D
 from diffusers.pipelines.controlnet.pipeline_controlnet import MultiControlNetModel
 from diffusers.utils.import_utils import is_xformers_available
 from diffusers.utils.testing_utils import enable_full_determinism, load_image, require_torch_gpu, slow, torch_device
@@ -817,3 +818,162 @@ class ControlNetSDXLPipelineSlowTests(unittest.TestCase):
         original_image = images[0, -3:, -3:, -1].flatten()
         expected_image = np.array([0.4399, 0.5112, 0.5478, 0.4314, 0.472, 0.4823, 0.4647, 0.4957, 0.4853])
         assert np.allclose(original_image, expected_image, atol=1e-04)
+
+
+class StableDiffusionSSD1BControlNetPipelineFastTests(StableDiffusionXLControlNetPipelineFastTests):
+    def test_controlnet_sdxl_guess(self):
+        device = "cpu"
+
+        components = self.get_dummy_components()
+
+        sd_pipe = self.pipeline_class(**components)
+        sd_pipe = sd_pipe.to(device)
+
+        sd_pipe.set_progress_bar_config(disable=None)
+
+        inputs = self.get_dummy_inputs(device)
+        inputs["guess_mode"] = True
+
+        output = sd_pipe(**inputs)
+        image_slice = output.images[0, -3:, -3:, -1]
+        expected_slice = np.array(
+            [0.6831671, 0.5702532, 0.5459845, 0.6299793, 0.58563006, 0.6033695, 0.4493941, 0.46132287, 0.5035841]
+        )
+
+        # make sure that it's equal
+        assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-4
+
+    def test_controlnet_sdxl_lcm(self):
+        device = "cpu"  # ensure determinism for the device-dependent torch.Generator
+
+        components = self.get_dummy_components(time_cond_proj_dim=256)
+        sd_pipe = StableDiffusionXLControlNetPipeline(**components)
+        sd_pipe.scheduler = LCMScheduler.from_config(sd_pipe.scheduler.config)
+        sd_pipe = sd_pipe.to(torch_device)
+        sd_pipe.set_progress_bar_config(disable=None)
+
+        inputs = self.get_dummy_inputs(device)
+        output = sd_pipe(**inputs)
+        image = output.images
+
+        image_slice = image[0, -3:, -3:, -1]
+
+        assert image.shape == (1, 64, 64, 3)
+        expected_slice = np.array([0.6850, 0.5135, 0.5545, 0.7033, 0.6617, 0.5971, 0.4165, 0.5480, 0.5070])
+
+        assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
+
+    def test_conditioning_channels(self):
+        unet = UNet2DConditionModel(
+            block_out_channels=(32, 64),
+            layers_per_block=2,
+            sample_size=32,
+            in_channels=4,
+            out_channels=4,
+            down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
+            up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
+            mid_block_type="UNetMidBlock2D",
+            # SD2-specific config below
+            attention_head_dim=(2, 4),
+            use_linear_projection=True,
+            addition_embed_type="text_time",
+            addition_time_embed_dim=8,
+            transformer_layers_per_block=(1, 2),
+            projection_class_embeddings_input_dim=80,  # 6 * 8 + 32
+            cross_attention_dim=64,
+            time_cond_proj_dim=None,
+        )
+
+        controlnet = ControlNetModel.from_unet(unet, conditioning_channels=4)
+        assert type(controlnet.mid_block) == UNetMidBlock2D
+        assert controlnet.conditioning_channels == 4
+
+    def get_dummy_components(self, time_cond_proj_dim=None):
+        torch.manual_seed(0)
+        unet = UNet2DConditionModel(
+            block_out_channels=(32, 64),
+            layers_per_block=2,
+            sample_size=32,
+            in_channels=4,
+            out_channels=4,
+            down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
+            up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
+            mid_block_type="UNetMidBlock2D",
+            # SD2-specific config below
+            attention_head_dim=(2, 4),
+            use_linear_projection=True,
+            addition_embed_type="text_time",
+            addition_time_embed_dim=8,
+            transformer_layers_per_block=(1, 2),
+            projection_class_embeddings_input_dim=80,  # 6 * 8 + 32
+            cross_attention_dim=64,
+            time_cond_proj_dim=time_cond_proj_dim,
+        )
+        torch.manual_seed(0)
+        controlnet = ControlNetModel(
+            block_out_channels=(32, 64),
+            layers_per_block=2,
+            in_channels=4,
+            down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
+            conditioning_embedding_out_channels=(16, 32),
+            mid_block_type="UNetMidBlock2D",
+            # SD2-specific config below
+            attention_head_dim=(2, 4),
+            use_linear_projection=True,
+            addition_embed_type="text_time",
+            addition_time_embed_dim=8,
+            transformer_layers_per_block=(1, 2),
+            projection_class_embeddings_input_dim=80,  # 6 * 8 + 32
+            cross_attention_dim=64,
+        )
+        torch.manual_seed(0)
+        scheduler = EulerDiscreteScheduler(
+            beta_start=0.00085,
+            beta_end=0.012,
+            steps_offset=1,
+            beta_schedule="scaled_linear",
+            timestep_spacing="leading",
+        )
+        torch.manual_seed(0)
+        vae = AutoencoderKL(
+            block_out_channels=[32, 64],
+            in_channels=3,
+            out_channels=3,
+            down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D"],
+            up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D"],
+            latent_channels=4,
+        )
+        torch.manual_seed(0)
+        text_encoder_config = CLIPTextConfig(
+            bos_token_id=0,
+            eos_token_id=2,
+            hidden_size=32,
+            intermediate_size=37,
+            layer_norm_eps=1e-05,
+            num_attention_heads=4,
+            num_hidden_layers=5,
+            pad_token_id=1,
+            vocab_size=1000,
+            # SD2-specific config below
+            hidden_act="gelu",
+            projection_dim=32,
+        )
+        text_encoder = CLIPTextModel(text_encoder_config)
+        tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
+
+        text_encoder_2 = CLIPTextModelWithProjection(text_encoder_config)
+        tokenizer_2 = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
+
+        components = {
+            "unet": unet,
+            "controlnet": controlnet,
+            "scheduler": scheduler,
+            "vae": vae,
+            "text_encoder": text_encoder,
+            "tokenizer": tokenizer,
+            "text_encoder_2": text_encoder_2,
+            "tokenizer_2": tokenizer_2,
+            "feature_extractor": None,
+            "image_encoder": None,
+        }
+        return components