Add support FluxFill inpainting pipeline (#1095)

* add support FluxFill inpainting pipeline

* add tests

* register dummy model class

* enable cli export tests

optimum/exporters/openvino/convert.py

@@ -43,6 +43,7 @@
     _torch_version,
     _transformers_version,
     compare_versions,
+    is_diffusers_version,
     is_openvino_tokenizers_version,
     is_tokenizers_version,
     is_transformers_version,
@@ -988,24 +989,36 @@ def _get_submodels_and_export_configs(
 def get_diffusion_models_for_export_ext(
     pipeline: "DiffusionPipeline", int_dtype: str = "int64", float_dtype: str = "fp32", exporter: str = "openvino"
 ):
-    try:
-        from diffusers import (
-            StableDiffusion3Img2ImgPipeline,
-            StableDiffusion3InpaintPipeline,
-            StableDiffusion3Pipeline,
-        )
+    if is_diffusers_version(">=", "0.29.0"):
+        from diffusers import StableDiffusion3Img2ImgPipeline, StableDiffusion3Pipeline
 
-        is_sd3 = isinstance(
-            pipeline, (StableDiffusion3Pipeline, StableDiffusion3InpaintPipeline, StableDiffusion3Img2ImgPipeline)
-        )
-    except ImportError:
+        sd3_pipes = [StableDiffusion3Pipeline, StableDiffusion3Img2ImgPipeline]
+        if is_diffusers_version(">=", "0.30.0"):
+            from diffusers import StableDiffusion3InpaintPipeline
+
+            sd3_pipes.append(StableDiffusion3InpaintPipeline)
+
+        is_sd3 = isinstance(pipeline, tuple(sd3_pipes))
+    else:
         is_sd3 = False
 
-    try:
+    if is_diffusers_version(">=", "0.30.0"):
         from diffusers import FluxPipeline
 
-        is_flux = isinstance(pipeline, FluxPipeline)
-    except ImportError:
+        flux_pipes = [FluxPipeline]
+
+        if is_diffusers_version(">=", "0.31.0"):
+            from diffusers import FluxImg2ImgPipeline, FluxInpaintPipeline
+
+            flux_pipes.extend([FluxPipeline, FluxImg2ImgPipeline, FluxInpaintPipeline])
+
+        if is_diffusers_version(">=", "0.32.0"):
+            from diffusers import FluxFillPipeline
+
+            flux_pipes.append(FluxFillPipeline)
+
+        is_flux = isinstance(pipeline, tuple(flux_pipes))
+    else:
         is_flux = False
 
     if not is_sd3 and not is_flux:

optimum/exporters/openvino/model_configs.py

@@ -56,7 +56,12 @@
 )
 from optimum.utils.normalized_config import NormalizedConfig, NormalizedTextConfig, NormalizedVisionConfig
 
-from ...intel.utils.import_utils import _transformers_version, is_diffusers_version, is_transformers_version
+from ...intel.utils.import_utils import (
+    _transformers_version,
+    is_diffusers_available,
+    is_diffusers_version,
+    is_transformers_version,
+)
 from .model_patcher import (
     AquilaModelPatcher,
     ArcticModelPatcher,
@@ -119,6 +124,10 @@ def init_model_configs():
         "image-text-to-text"
     ] = TasksManager._TRANSFORMERS_TASKS_TO_MODEL_LOADERS["text-generation"]
 
+    if is_diffusers_available() and "fill" not in TasksManager._DIFFUSERS_TASKS_TO_MODEL_LOADERS:
+        TasksManager._DIFFUSERS_TASKS_TO_MODEL_LOADERS["fill"] = "FluxFillPipeline"
+        TasksManager._DIFFUSERS_TASKS_TO_MODEL_MAPPINGS["fill"] = {"flux": "FluxFillPipeline"}
+
     supported_model_types = [
         "_SUPPORTED_MODEL_TYPE",
         "_DIFFUSERS_SUPPORTED_MODEL_TYPE",

optimum/intel/__init__.py

@@ -126,6 +126,7 @@
         "OVFluxPipeline",
         "OVFluxImg2ImgPipeline",
         "OVFluxInpaintPipeline",
+        "OVFluxFillPipeline",
         "OVPipelineForImage2Image",
         "OVPipelineForText2Image",
         "OVPipelineForInpainting",
@@ -148,6 +149,7 @@
             "OVFluxPipeline",
             "OVFluxImg2ImgPipeline",
             "OVFluxInpaintPipeline",
+            "OVFluxFillPipeline",
             "OVPipelineForImage2Image",
             "OVPipelineForText2Image",
             "OVPipelineForInpainting",

optimum/intel/openvino/__init__.py

@@ -82,6 +82,7 @@
 if is_diffusers_available():
     from .modeling_diffusion import (
         OVDiffusionPipeline,
+        OVFluxFillPipeline,
         OVFluxImg2ImgPipeline,
         OVFluxInpaintPipeline,
         OVFluxPipeline,

optimum/intel/openvino/modeling_diffusion.py

@@ -101,6 +101,11 @@
     FluxImg2ImgPipeline = object
     FluxInpaintPipeline = object
 
+if is_diffusers_version(">=", "0.32.0"):
+    from diffusers import FluxFillPipeline
+else:
+    FluxFillPipeline = object
+
 
 DIFFUSION_MODEL_TRANSFORMER_SUBFOLDER = "transformer"
 DIFFUSION_MODEL_TEXT_ENCODER_3_SUBFOLDER = "text_encoder_3"
@@ -1458,17 +1463,23 @@ class OVFluxPipeline(OVDiffusionPipeline, OVTextualInversionLoaderMixin, FluxPip
 
 
 class OVFluxImg2ImgPipeline(OVDiffusionPipeline, OVTextualInversionLoaderMixin, FluxImg2ImgPipeline):
-    main_input_name = "prompt"
+    main_input_name = "image"
     export_feature = "image-to-image"
     auto_model_class = FluxImg2ImgPipeline
 
 
 class OVFluxInpaintPipeline(OVDiffusionPipeline, OVTextualInversionLoaderMixin, FluxInpaintPipeline):
-    main_input_name = "prompt"
+    main_input_name = "image"
     export_feature = "inpainting"
     auto_model_class = FluxInpaintPipeline
 
 
+class OVFluxFillPipeline(OVDiffusionPipeline, OVTextualInversionLoaderMixin, FluxFillPipeline):
+    main_input_name = "image"
+    export_feature = "inpainting"
+    auto_model_class = FluxFillPipeline
+
+
 SUPPORTED_OV_PIPELINES = [
     OVStableDiffusionPipeline,
     OVStableDiffusionImg2ImgPipeline,
@@ -1537,6 +1548,10 @@ def _get_ov_class(pipeline_class_name: str, throw_error_if_not_exist: bool = Tru
     OV_INPAINT_PIPELINES_MAPPING["flux"] = OVFluxInpaintPipeline
     OV_IMAGE2IMAGE_PIPELINES_MAPPING["flux"] = OVFluxImg2ImgPipeline
 
+if is_diffusers_version(">=", "0.32.0"):
+    OV_INPAINT_PIPELINES_MAPPING["flux-fill"] = OVFluxFillPipeline
+    SUPPORTED_OV_PIPELINES.append(OVFluxFillPipeline)
+
 SUPPORTED_OV_PIPELINES_MAPPINGS = [
     OV_TEXT2IMAGE_PIPELINES_MAPPING,
     OV_IMAGE2IMAGE_PIPELINES_MAPPING,

optimum/intel/openvino/utils.py

@@ -126,6 +126,7 @@
     "stable-diffusion-xl": "OVStableDiffusionXLPipeline",
     "stable-diffusion-3": "OVStableDiffusion3Pipeline",
     "flux": "OVFluxPipeline",
+    "flux-fill": "OVFluxFillPipeline",
     "pix2struct": "OVModelForPix2Struct",
     "latent-consistency": "OVLatentConsistencyModelPipeline",
     "open_clip_text": "OVModelOpenCLIPText",

optimum/intel/utils/dummy_openvino_and_diffusers_objects.py

@@ -211,3 +211,14 @@ def __init__(self, *args, **kwargs):
     @classmethod
     def from_pretrained(cls, *args, **kwargs):
         requires_backends(cls, ["openvino", "diffusers"])
+
+
+class OVFluxFillPipeline(metaclass=DummyObject):
+    _backends = ["openvino", "diffusers"]
+
+    def __init__(self, *args, **kwargs):
+        requires_backends(self, ["openvino", "diffusers"])
+
+    @classmethod
+    def from_pretrained(cls, *args, **kwargs):
+        requires_backends(cls, ["openvino", "diffusers"])

tests/openvino/test_diffusion.py

@@ -667,13 +667,14 @@ class OVPipelineForInpaintingTest(unittest.TestCase):
     if is_transformers_version(">=", "4.40.0"):
         SUPPORTED_ARCHITECTURES.append("stable-diffusion-3")
         SUPPORTED_ARCHITECTURES.append("flux")
+        SUPPORTED_ARCHITECTURES.append("flux-fill")
 
     AUTOMODEL_CLASS = AutoPipelineForInpainting
     OVMODEL_CLASS = OVPipelineForInpainting
 
     TASK = "inpainting"
 
-    def generate_inputs(self, height=128, width=128, batch_size=1, channel=3, input_type="pil"):
+    def generate_inputs(self, height=128, width=128, batch_size=1, channel=3, input_type="pil", model_arch=""):
         inputs = _generate_prompts(batch_size=batch_size)
 
         inputs["image"] = _generate_images(
@@ -683,7 +684,8 @@ def generate_inputs(self, height=128, width=128, batch_size=1, channel=3, input_
             height=height, width=width, batch_size=batch_size, channel=1, input_type=input_type
         )
 
-        inputs["strength"] = 0.75
+        if model_arch != "flux-fill":
+            inputs["strength"] = 0.75
         inputs["height"] = height
         inputs["width"] = width
 
@@ -699,7 +701,12 @@ def test_load_vanilla_model_which_is_not_supported(self):
     @parameterized.expand(SUPPORTED_ARCHITECTURES)
     @require_diffusers
     def test_ov_pipeline_class_dispatch(self, model_arch: str):
-        auto_pipeline = self.AUTOMODEL_CLASS.from_pretrained(MODEL_NAMES[model_arch])
+        if model_arch != "flux-fill":
+            auto_pipeline = self.AUTOMODEL_CLASS.from_pretrained(MODEL_NAMES[model_arch])
+        else:
+            from diffusers import FluxFillPipeline
+
+            auto_pipeline = FluxFillPipeline.from_pretrained(MODEL_NAMES[model_arch])
         ov_pipeline = self.OVMODEL_CLASS.from_pretrained(MODEL_NAMES[model_arch])
 
         self.assertEqual(ov_pipeline.auto_model_class, auto_pipeline.__class__)
@@ -713,7 +720,9 @@ def test_num_images_per_prompt(self, model_arch: str):
             for height in [64, 128]:
                 for width in [64, 128]:
                     for num_images_per_prompt in [1, 3]:
-                        inputs = self.generate_inputs(height=height, width=width, batch_size=batch_size)
+                        inputs = self.generate_inputs(
+                            height=height, width=width, batch_size=batch_size, model_arch=model_arch
+                        )
                         outputs = pipeline(**inputs, num_images_per_prompt=num_images_per_prompt).images
                         self.assertEqual(outputs.shape, (batch_size * num_images_per_prompt, height, width, 3))
 
@@ -752,7 +761,9 @@ def test_shape(self, model_arch: str):
         height, width, batch_size = 128, 64, 1
 
         for input_type in ["pil", "np", "pt"]:
-            inputs = self.generate_inputs(height=height, width=width, batch_size=batch_size, input_type=input_type)
+            inputs = self.generate_inputs(
+                height=height, width=width, batch_size=batch_size, input_type=input_type, model_arch=model_arch
+            )
 
             for output_type in ["pil", "np", "pt", "latent"]:
                 inputs["output_type"] = output_type
@@ -764,7 +775,7 @@ def test_shape(self, model_arch: str):
                 elif output_type == "pt":
                     self.assertEqual(outputs.shape, (batch_size, 3, height, width))
                 else:
-                    if model_arch != "flux":
+                    if not model_arch.startswith("flux"):
                         out_channels = (
                             pipeline.unet.config.out_channels
                             if pipeline.unet is not None
@@ -782,17 +793,26 @@ def test_shape(self, model_arch: str):
                     else:
                         packed_height = height // pipeline.vae_scale_factor // 2
                         packed_width = width // pipeline.vae_scale_factor // 2
-                        channels = pipeline.transformer.config.in_channels
+                        channels = (
+                            pipeline.transformer.config.in_channels
+                            if model_arch != "flux-fill"
+                            else pipeline.transformer.out_channels
+                        )
                         self.assertEqual(outputs.shape, (batch_size, packed_height * packed_width, channels))
 
     @parameterized.expand(SUPPORTED_ARCHITECTURES)
     @require_diffusers
     def test_compare_to_diffusers_pipeline(self, model_arch: str):
         ov_pipeline = self.OVMODEL_CLASS.from_pretrained(MODEL_NAMES[model_arch])
-        diffusers_pipeline = self.AUTOMODEL_CLASS.from_pretrained(MODEL_NAMES[model_arch])
+        if model_arch != "flux-fill":
+            diffusers_pipeline = self.AUTOMODEL_CLASS.from_pretrained(MODEL_NAMES[model_arch])
+        else:
+            from diffusers import FluxFillPipeline
+
+            diffusers_pipeline = FluxFillPipeline.from_pretrained(MODEL_NAMES[model_arch])
 
         height, width, batch_size = 64, 64, 1
-        inputs = self.generate_inputs(height=height, width=width, batch_size=batch_size)
+        inputs = self.generate_inputs(height=height, width=width, batch_size=batch_size, model_arch=model_arch)
 
         for output_type in ["latent", "np", "pt"]:
             inputs["output_type"] = output_type
@@ -804,7 +824,7 @@ def test_compare_to_diffusers_pipeline(self, model_arch: str):
 
         # test generation when input resolution nondevisible on 64
         height, width, batch_size = 96, 96, 1
-        inputs = self.generate_inputs(height=height, width=width, batch_size=batch_size)
+        inputs = self.generate_inputs(height=height, width=width, batch_size=batch_size, model_arch=model_arch)
 
         for output_type in ["latent", "np", "pt"]:
             inputs["output_type"] = output_type
@@ -820,7 +840,7 @@ def test_image_reproducibility(self, model_arch: str):
         pipeline = self.OVMODEL_CLASS.from_pretrained(MODEL_NAMES[model_arch])
 
         height, width, batch_size = 64, 64, 1
-        inputs = self.generate_inputs(height=height, width=width, batch_size=batch_size)
+        inputs = self.generate_inputs(height=height, width=width, batch_size=batch_size, model_arch=model_arch)
 
         for generator_framework in ["np", "pt"]:
             ov_outputs_1 = pipeline(**inputs, generator=get_generator(generator_framework, SEED))

tests/openvino/test_exporters_cli.py

@@ -27,6 +27,7 @@
 
 from optimum.exporters.openvino.__main__ import main_export
 from optimum.intel import (  # noqa
+    OVFluxFillPipeline,
     OVFluxPipeline,
     OVLatentConsistencyModelPipeline,
     OVModelForAudioClassification,
@@ -82,7 +83,9 @@ class OVCLIExportTestCase(unittest.TestCase):
     ]
 
     if is_transformers_version(">=", "4.45"):
-        SUPPORTED_ARCHITECTURES.extend([("text-to-image", "stable-diffusion-3"), ("text-to-image", "flux")])
+        SUPPORTED_ARCHITECTURES.extend(
+            [("text-to-image", "stable-diffusion-3"), ("text-to-image", "flux"), ("inpainting", "flux-fill")]
+        )
     EXPECTED_NUMBER_OF_TOKENIZER_MODELS = {
         "gpt2": 2 if is_tokenizers_version("<", "0.20") or is_openvino_version(">=", "2024.5") else 0,
         "t5": 0,  # no .model file in the repository
@@ -97,6 +100,7 @@ class OVCLIExportTestCase(unittest.TestCase):
         "stable-diffusion-xl": 4 if is_tokenizers_version("<", "0.20") or is_openvino_version(">=", "2024.5") else 0,
         "stable-diffusion-3": 6 if is_tokenizers_version("<", "0.20") or is_openvino_version(">=", "2024.5") else 2,
         "flux": 4 if is_tokenizers_version("<", "0.20") or is_openvino_version(">=", "2024.5") else 0,
+        "flux-fill": 2 if is_tokenizers_version("<", "0.20") or is_openvino_version(">=", "2024.5") else 0,
         "llava": 2 if is_tokenizers_version("<", "0.20") or is_openvino_version(">=", "2024.5") else 0,
     }
 

tests/openvino/utils_tests.py

@@ -66,6 +66,7 @@
     "falcon-40b": "katuni4ka/tiny-random-falcon-40b",
     "flaubert": "hf-internal-testing/tiny-random-flaubert",
     "flux": "katuni4ka/tiny-random-flux",
+    "flux-fill": "katuni4ka/tiny-random-flux-fill",
     "gpt_bigcode": "hf-internal-testing/tiny-random-GPTBigCodeModel",
     "gpt2": "hf-internal-testing/tiny-random-gpt2",
     "gpt_neo": "hf-internal-testing/tiny-random-GPTNeoModel",
@@ -193,6 +194,7 @@
     "open-clip": (20, 28),
     "stable-diffusion-3": (66, 42, 58, 30),
     "flux": (56, 24, 28, 64),
+    "flux-fill": (56, 24, 28, 64),
     "llava": (30, 9, 1),
     "llava_next": (30, 9, 1),
     "minicpmv": (30, 26, 1, 6),