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fix(FeatherMask): correct negative zero indexing for right/bottom feathering

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In the FeatherMask node, when applying right and bottom feathering, the
loop variable starts at 0, making `-x` and `-y` equal to `-0`, which in
Python indexes the first element (index 0) instead of the last. This
causes the first column/row to be incorrectly modified while the last
column/row is left untouched.

Fix by using `-(x + 1)` and `-(y + 1)` so the loop correctly starts
from the last element (index -1) and works inward, matching the behavior
of the left/top feathering loops which start from index 0 and work
outward.
This commit is contained in:
gambletan 2026-03-11 10:18:26 +08:00
parent 3ad36d6be6
commit 730eeec5d3
1 changed files with 2 additions and 2 deletions
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4
comfy_extras/nodes_mask.py
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@ -322,7 +322,7 @@ class FeatherMask(IO.ComfyNode):
for x in range(right):
feather_rate = (x + 1) / right
output[:, :, -x] *= feather_rate
output[:, :, -(x + 1)] *= feather_rate
for y in range(top):
feather_rate = (y + 1) / top
@ -330,7 +330,7 @@ class FeatherMask(IO.ComfyNode):
for y in range(bottom):
feather_rate = (y + 1) / bottom
output[:, -y, :] *= feather_rate
output[:, -(y + 1), :] *= feather_rate
return IO.NodeOutput(output)