Feature/zimage inpaint pipeline

docs/source/en/api/pipelines/z_image.md

@@ -53,6 +53,41 @@ image = pipe(
 image.save("zimage_img2img.png")
 ```
 
+## Inpainting
+
+Use [`ZImageInpaintPipeline`] to inpaint specific regions of an image based on a text prompt and mask.
+
+```python
+import torch
+import numpy as np
+from PIL import Image
+from diffusers import ZImageInpaintPipeline
+from diffusers.utils import load_image
+
+pipe = ZImageInpaintPipeline.from_pretrained("Tongyi-MAI/Z-Image-Turbo", torch_dtype=torch.bfloat16)
+pipe.to("cuda")
+
+url = "https://raw.githubusercontent.com/CompVis/stable-diffusion/main/assets/stable-samples/img2img/sketch-mountains-input.jpg"
+init_image = load_image(url).resize((1024, 1024))
+
+# Create a mask (white = inpaint, black = preserve)
+mask = np.zeros((1024, 1024), dtype=np.uint8)
+mask[256:768, 256:768] = 255  # Inpaint center region
+mask_image = Image.fromarray(mask)
+
+prompt = "A beautiful lake with mountains in the background"
+image = pipe(
+    prompt,
+    image=init_image,
+    mask_image=mask_image,
+    strength=1.0,
+    num_inference_steps=9,
+    guidance_scale=0.0,
+    generator=torch.Generator("cuda").manual_seed(42),
+).images[0]
+image.save("zimage_inpaint.png")
+```
+
 ## ZImagePipeline
 
 [[autodoc]] ZImagePipeline
@@ -64,3 +99,9 @@ image.save("zimage_img2img.png")
 [[autodoc]] ZImageImg2ImgPipeline
 	- all
 	- __call__
+
+## ZImageInpaintPipeline
+
+[[autodoc]] ZImageInpaintPipeline
+	- all
+	- __call__

src/diffusers/__init__.py

@@ -691,6 +691,7 @@
             "ZImageControlNetInpaintPipeline",
             "ZImageControlNetPipeline",
             "ZImageImg2ImgPipeline",
+            "ZImageInpaintPipeline",
             "ZImageOmniPipeline",
             "ZImagePipeline",
         ]
@@ -1418,6 +1419,7 @@
             ZImageControlNetInpaintPipeline,
             ZImageControlNetPipeline,
             ZImageImg2ImgPipeline,
+            ZImageInpaintPipeline,
             ZImageOmniPipeline,
             ZImagePipeline,
         )

src/diffusers/pipelines/__init__.py

@@ -410,11 +410,12 @@
         "Kandinsky5I2IPipeline",
     ]
     _import_structure["z_image"] = [
-        "ZImageImg2ImgPipeline",
-        "ZImagePipeline",
-        "ZImageControlNetPipeline",
         "ZImageControlNetInpaintPipeline",
+        "ZImageControlNetPipeline",
+        "ZImageImg2ImgPipeline",
+        "ZImageInpaintPipeline",
         "ZImageOmniPipeline",
+        "ZImagePipeline",
     ]
     _import_structure["skyreels_v2"] = [
         "SkyReelsV2DiffusionForcingPipeline",
@@ -870,6 +871,7 @@
             ZImageControlNetInpaintPipeline,
             ZImageControlNetPipeline,
             ZImageImg2ImgPipeline,
+            ZImageInpaintPipeline,
             ZImageOmniPipeline,
             ZImagePipeline,
         )

src/diffusers/pipelines/auto_pipeline.py

@@ -127,6 +127,7 @@
     ZImageControlNetInpaintPipeline,
     ZImageControlNetPipeline,
     ZImageImg2ImgPipeline,
+    ZImageInpaintPipeline,
     ZImageOmniPipeline,
     ZImagePipeline,
 )
@@ -235,6 +236,7 @@
         ("stable-diffusion-pag", StableDiffusionPAGInpaintPipeline),
         ("qwenimage", QwenImageInpaintPipeline),
         ("qwenimage-edit", QwenImageEditInpaintPipeline),
+        ("z-image", ZImageInpaintPipeline),
     ]
 )
 

src/diffusers/pipelines/z_image/__init__.py

@@ -26,6 +26,7 @@
     _import_structure["pipeline_z_image_controlnet"] = ["ZImageControlNetPipeline"]
     _import_structure["pipeline_z_image_controlnet_inpaint"] = ["ZImageControlNetInpaintPipeline"]
     _import_structure["pipeline_z_image_img2img"] = ["ZImageImg2ImgPipeline"]
+    _import_structure["pipeline_z_image_inpaint"] = ["ZImageInpaintPipeline"]
     _import_structure["pipeline_z_image_omni"] = ["ZImageOmniPipeline"]
 
 
@@ -42,6 +43,7 @@
         from .pipeline_z_image_controlnet import ZImageControlNetPipeline
         from .pipeline_z_image_controlnet_inpaint import ZImageControlNetInpaintPipeline
         from .pipeline_z_image_img2img import ZImageImg2ImgPipeline
+        from .pipeline_z_image_inpaint import ZImageInpaintPipeline
         from .pipeline_z_image_omni import ZImageOmniPipeline
 else:
     import sys

src/diffusers/pipelines/z_image/pipeline_z_image.py

@@ -276,7 +276,7 @@ def guidance_scale(self):
 
     @property
     def do_classifier_free_guidance(self):
-        return self._guidance_scale > 1
+        return self._guidance_scale > 0
 
     @property
     def joint_attention_kwargs(self):

src/diffusers/pipelines/z_image/pipeline_z_image_controlnet.py

@@ -365,7 +365,7 @@ def guidance_scale(self):
 
     @property
     def do_classifier_free_guidance(self):
-        return self._guidance_scale > 1
+        return self._guidance_scale > 0
 
     @property
     def joint_attention_kwargs(self):

src/diffusers/pipelines/z_image/pipeline_z_image_controlnet_inpaint.py

@@ -372,7 +372,7 @@ def guidance_scale(self):
 
     @property
     def do_classifier_free_guidance(self):
-        return self._guidance_scale > 1
+        return self._guidance_scale > 0
 
     @property
     def joint_attention_kwargs(self):

src/diffusers/pipelines/z_image/pipeline_z_image_img2img.py

@@ -347,7 +347,7 @@ def guidance_scale(self):
 
     @property
     def do_classifier_free_guidance(self):
-        return self._guidance_scale > 1
+        return self._guidance_scale > 0
 
     @property
     def joint_attention_kwargs(self):