From a448c61b245bfb7a898968172485e928e39c98fd Mon Sep 17 00:00:00 2001
From: psychedelicious <4822129+psychedelicious@users.noreply.github.com>
Date: Fri, 28 Mar 2025 06:15:24 +1000
Subject: [PATCH 1/2] fix(nodes): handle zero fade size (e.g. mask blur 0)

Closes #7850
---
 invokeai/app/invocations/image.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/invokeai/app/invocations/image.py b/invokeai/app/invocations/image.py
index ea6069bd7a9..7fc92199540 100644
--- a/invokeai/app/invocations/image.py
+++ b/invokeai/app/invocations/image.py
@@ -1095,6 +1095,7 @@ class ExpandMaskWithFadeInvocation(BaseInvocation, WithMetadata, WithBoard):
     """Expands a mask with a fade effect. The mask uses black to indicate areas to keep from the generated image and white for areas to discard.
     The mask is thresholded to create a binary mask, and then a distance transform is applied to create a fade effect.
     The fade size is specified in pixels, and the mask is expanded by that amount. The result is a mask with a smooth transition from black to white.
+    If the fade size is 0, the mask is returned as-is.
     """
 
     mask: ImageField = InputField(description="The mask to expand")
@@ -1104,6 +1105,11 @@ class ExpandMaskWithFadeInvocation(BaseInvocation, WithMetadata, WithBoard):
     def invoke(self, context: InvocationContext) -> ImageOutput:
         pil_mask = context.images.get_pil(self.mask.image_name, mode="L")
 
+        if self.fade_size_px == 0:
+            # If the fade size is 0, just return the mask as-is.
+            image_dto = context.images.save(image=pil_mask, image_category=ImageCategory.MASK)
+            return ImageOutput.build(image_dto)
+
         np_mask = numpy.array(pil_mask)
 
         # Threshold the mask to create a binary mask - 0 for black, 255 for white

From cfa3ad34eb1a204a3b15cfec5e8d52fcc31f2a40 Mon Sep 17 00:00:00 2001
From: psychedelicious <4822129+psychedelicious@users.noreply.github.com>
Date: Fri, 28 Mar 2025 06:35:36 +1000
Subject: [PATCH 2/2] chore(ui): typegen

---
 invokeai/frontend/web/src/services/api/schema.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/invokeai/frontend/web/src/services/api/schema.ts b/invokeai/frontend/web/src/services/api/schema.ts
index dfd1f98b030..21da55167e3 100644
--- a/invokeai/frontend/web/src/services/api/schema.ts
+++ b/invokeai/frontend/web/src/services/api/schema.ts
@@ -6451,6 +6451,7 @@ export type components = {
          * @description Expands a mask with a fade effect. The mask uses black to indicate areas to keep from the generated image and white for areas to discard.
          *     The mask is thresholded to create a binary mask, and then a distance transform is applied to create a fade effect.
          *     The fade size is specified in pixels, and the mask is expanded by that amount. The result is a mask with a smooth transition from black to white.
+         *     If the fade size is 0, the mask is returned as-is.
          */
         ExpandMaskWithFadeInvocation: {
             /**