TTP Smart Tile Set Preview

A plain but genuinely useful QA node for the Smart Tile 2.0 pipeline. Once TTP Smart Tile Interactive Crop has produced a tile_set, this node lets you actually look at it before you commit to sampling every tile through your loop - which matters a lot when Auto Tile (SAM3.1 or QwenVL3) can produce anywhere from a handful of tiles up to your configured cap, and you'd rather catch a bad detection now than after fifteen minutes of img2img.

What it does. Feed it a tile_set and it gives you back one of two views, controlled by mode: contact_sheet (the default) lays every tile out in a grid so you can eyeball the whole plan at once, or selected_tile zooms into a single tile by selected_index (0–63, so the practical ceiling here is 64 tiles) so you can check one crop or mask precisely. thumbnail_size (default 256) and columns (default 4) control how the contact sheet is laid out, and show_labels (on by default) overlays each tile's name or index - useful because those are exactly the strings you'll type into selector on nodes like TTP Smart Tile Composite Override (selector_type=index, selector=T3, and so on), so seeing the labels here saves you from guessing.

Outputs: image (the contact sheet or the single selected tile) and info (a text summary - worth routing to a Show Text node while you're iterating on a layout).

Where it earns its keep. Two points in the workflow, specifically. Right after Interactive Crop, before you've built out any of the prompt/composite/rank steps - confirm the tile boundaries and count look sane, especially after an Auto Tile pass, before you invest more graph-building time on top of a bad layout. And again after TTP Smart Tile Semantic Rank or TTP Smart Tile Composite Override, to visually confirm that a layer/priority/composite-mode change actually landed the way you expected, before you run the full sampler loop and find out at Assemble time instead.

Install. ComfyUI Manager, search "Comfyui_TTP_Toolset", or cd ComfyUI/custom_nodes && git clone https://github.com/TTPlanetPig/Comfyui_TTP_Toolset, then restart. Pure visualization node - no models, no extra dependencies, and it doesn't touch your sampler or GPU budget beyond generating the preview image itself.

Common issues. This one doesn't show up in the pack's README troubleshooting table, and there's no real community discussion of it specifically - it's a small, mostly self-explanatory utility, so there isn't much to warn you about. The one practical tip: if selected_index in selected_tile mode comes back empty or wrong, remember it's zero-indexed and capped at 63 - check TTP Smart Tile Interactive Crop's tile count (visible via its own preview output, or this node's contact_sheet mode with show_labels on) before assuming the index you typed points at the tile you meant.