Ethanfel/ComfyUI_UltimateSGUpscale
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Author SHA1 Message Date
Ethanfel
db82775382 fix: add PreviewImage after Pass 1 for bypass support 
SaveImage was only connected to the seam fix output, so muting the
seam fix section produced no output at all. Added PreviewImage after
Pass 1's ImageMergeTileList so the user always sees the tiled redraw
result, even when the seam fix section is bypassed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
 2026-02-25 16:10:45 +01:00
Ethanfel
65253fd1bc fix: compute seam positions from actual tile grid 
Replicate SplitImageToTileList's get_grid_coords logic to find real
overlap regions between adjacent tiles. Fixes three bugs:

1. Bands were at overlap start instead of center (off by overlap/2)
2. Spurious bands generated beyond the actual tile grid
3. Edge tile seams placed at wrong position (ignoring boundary shift)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
 2026-02-25 16:05:26 +01:00
Ethanfel
2564377aa1 feat: initial ComfyUI_UltimateSGUpscale 
Recreates UltimateSDUpscale features using built-in ComfyUI nodes
(SplitImageToTileList, ImageMergeTileList) plus a small GenerateSeamMask
helper node.

- GenerateSeamMask: creates white-band mask at tile seam positions
- Workflow JSON: 22-node tiled upscale pipeline with:
  - Pass 1: model upscale + tiled img2img redraw
  - Pass 2: targeted seam fix using SetLatentNoiseMask
- Unit tests for seam mask generation

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
 2026-02-25 15:52:32 +01:00