Add StableDiffusion3PAGImg2Img Pipeline + Fix SD3 Unconditional PAG (#9932)

* fix progress bar updates in SD 1.5 PAG Img2Img pipeline



---------

Co-authored-by: Vinh H. Pham <[email protected]>
Co-authored-by: Sayak Paul <[email protected]>

Author: 3 people

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

@@ -96,6 +96,10 @@ Since RegEx is supported as a way for matching layer identifiers, it is crucial
 	- all
 	- __call__
 
+## StableDiffusion3PAGImg2ImgPipeline
+[[autodoc]] StableDiffusion3PAGImg2ImgPipeline
+	- all
+	- __call__
 
 ## PixArtSigmaPAGPipeline
 [[autodoc]] PixArtSigmaPAGPipeline

src/diffusers/__init__.py

@@ -339,6 +339,7 @@
             "StableDiffusion3Img2ImgPipeline",
             "StableDiffusion3InpaintPipeline",
             "StableDiffusion3PAGPipeline",
+            "StableDiffusion3PAGImg2ImgPipeline",
             "StableDiffusion3Pipeline",
             "StableDiffusionAdapterPipeline",
             "StableDiffusionAttendAndExcitePipeline",
@@ -807,6 +808,7 @@
             StableDiffusion3ControlNetPipeline,
             StableDiffusion3Img2ImgPipeline,
             StableDiffusion3InpaintPipeline,
+            StableDiffusion3PAGImg2ImgPipeline,
             StableDiffusion3PAGPipeline,
             StableDiffusion3Pipeline,
             StableDiffusionAdapterPipeline,

src/diffusers/models/attention_processor.py

@@ -1171,6 +1171,7 @@ def __call__(
         attn: Attention,
         hidden_states: torch.FloatTensor,
         encoder_hidden_states: torch.FloatTensor = None,
+        attention_mask: Optional[torch.FloatTensor] = None,
     ) -> torch.FloatTensor:
         residual = hidden_states
 

src/diffusers/pipelines/__init__.py

@@ -171,6 +171,7 @@
             "KolorsPAGPipeline",
             "HunyuanDiTPAGPipeline",
             "StableDiffusion3PAGPipeline",
+            "StableDiffusion3PAGImg2ImgPipeline",
             "StableDiffusionPAGPipeline",
             "StableDiffusionPAGImg2ImgPipeline",
             "StableDiffusionControlNetPAGPipeline",
@@ -589,6 +590,7 @@
             HunyuanDiTPAGPipeline,
             KolorsPAGPipeline,
             PixArtSigmaPAGPipeline,
+            StableDiffusion3PAGImg2ImgPipeline,
             StableDiffusion3PAGPipeline,
             StableDiffusionControlNetPAGInpaintPipeline,
             StableDiffusionControlNetPAGPipeline,

src/diffusers/pipelines/auto_pipeline.py

@@ -61,6 +61,7 @@
 from .pag import (
     HunyuanDiTPAGPipeline,
     PixArtSigmaPAGPipeline,
+    StableDiffusion3PAGImg2ImgPipeline,
     StableDiffusion3PAGPipeline,
     StableDiffusionControlNetPAGInpaintPipeline,
     StableDiffusionControlNetPAGPipeline,
@@ -129,6 +130,7 @@
         ("stable-diffusion", StableDiffusionImg2ImgPipeline),
         ("stable-diffusion-xl", StableDiffusionXLImg2ImgPipeline),
         ("stable-diffusion-3", StableDiffusion3Img2ImgPipeline),
+        ("stable-diffusion-3-pag", StableDiffusion3PAGImg2ImgPipeline),
         ("if", IFImg2ImgPipeline),
         ("kandinsky", KandinskyImg2ImgCombinedPipeline),
         ("kandinsky22", KandinskyV22Img2ImgCombinedPipeline),

src/diffusers/pipelines/pag/__init__.py

@@ -31,6 +31,7 @@
     _import_structure["pipeline_pag_pixart_sigma"] = ["PixArtSigmaPAGPipeline"]
     _import_structure["pipeline_pag_sd"] = ["StableDiffusionPAGPipeline"]
     _import_structure["pipeline_pag_sd_3"] = ["StableDiffusion3PAGPipeline"]
+    _import_structure["pipeline_pag_sd_3_img2img"] = ["StableDiffusion3PAGImg2ImgPipeline"]
     _import_structure["pipeline_pag_sd_animatediff"] = ["AnimateDiffPAGPipeline"]
     _import_structure["pipeline_pag_sd_img2img"] = ["StableDiffusionPAGImg2ImgPipeline"]
     _import_structure["pipeline_pag_sd_xl"] = ["StableDiffusionXLPAGPipeline"]
@@ -54,6 +55,7 @@
         from .pipeline_pag_pixart_sigma import PixArtSigmaPAGPipeline
         from .pipeline_pag_sd import StableDiffusionPAGPipeline
         from .pipeline_pag_sd_3 import StableDiffusion3PAGPipeline
+        from .pipeline_pag_sd_3_img2img import StableDiffusion3PAGImg2ImgPipeline
         from .pipeline_pag_sd_animatediff import AnimateDiffPAGPipeline
         from .pipeline_pag_sd_img2img import StableDiffusionPAGImg2ImgPipeline
         from .pipeline_pag_sd_xl import StableDiffusionXLPAGPipeline