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>
Group 4/5 and Group 1/2 bounding boxes overlapped, causing nodes to
appear in multiple groups. Muting the Seam Fix group would have also
muted Pass 1 output nodes. Repositioned GenerateSeamMask node and
adjusted all group boundaries to eliminate overlaps.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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>
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>
