Ethanfel/ComfyUI_UltimateSGUpscale
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refactor: vectorize gradient loop and fix DD node position

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Replace per-pixel Python loop with vectorized torch.arange + slice
operations. Fix DifferentialDiffusion node position to avoid visual
overlap with SplitImageToTileList node 14 on the canvas.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Ethanfel
2026-02-25 16:49:17 +01:00
parent 93b0ac22cd
commit 06b42a610b
2 changed files with 7 additions and 7 deletions
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2
example_workflows/tiled-upscale-builtin-nodes.json
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@@ -412,7 +412,7 @@
{
"id": 24,
"type": "DifferentialDiffusion",
"pos": [2560, 160],
"pos": [2560, 60],
"size": [250, 46],
"flags": {},
"order": 12,

12
seam_mask_node.py
View File

@@ -60,9 +60,9 @@ class GenerateSeamMask:
center = (ovl_start + ovl_end) // 2
x_start = max(0, center - half_w)
x_end = min(image_width, center + half_w)
for x in range(x_start, x_end):
val = 1.0 - abs(x - center) / half_w
mask[:, :, x, :] = torch.max(mask[:, :, x, :], torch.tensor(val))
xs = torch.arange(x_start, x_end, dtype=torch.float32)
vals = (1.0 - (xs - center).abs() / half_w).view(1, 1, -1, 1)
mask[:, :, x_start:x_end, :] = torch.max(mask[:, :, x_start:x_end, :], vals)
# Horizontal seam bands
for i in range(len(y_tiles) - 1):
@@ -71,9 +71,9 @@ class GenerateSeamMask:
center = (ovl_start + ovl_end) // 2
y_start = max(0, center - half_w)
y_end = min(image_height, center + half_w)
for y in range(y_start, y_end):
val = 1.0 - abs(y - center) / half_w
mask[:, y, :, :] = torch.max(mask[:, y, :, :], torch.tensor(val))
ys = torch.arange(y_start, y_end, dtype=torch.float32)
vals = (1.0 - (ys - center).abs() / half_w).view(1, -1, 1, 1)
mask[:, y_start:y_end, :, :] = torch.max(mask[:, y_start:y_end, :, :], vals)
else:
# Binary mode (original behavior)
for i in range(len(x_tiles) - 1):