ausboss
48e225766e
The mode only rewrites the seed after a queue, so the first queue after switching from Fixed to Random reused the last seed and ComfyUI returned the cached result. Entering Random now rolls a new seed right away, and leaving Fixed for Step takes the first step; flipping Step's direction leaves the number alone. Checked live on a CPU instance: a Fixed run used 12345, clicking Random showed a new seed, and the next run used it.
44 lines
1.9 KiB
Markdown
44 lines
1.9 KiB
Markdown
# Seed
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One seed on its own `INT` wire, so every sampler that should share it does,
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and a shared workflow can pin the exact seed that made its example image.
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The card is the whole face: the number, the mode, and the buttons a run
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needs.
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## The card
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- **The number** — click to type a seed; **⧉** copies it. In Random mode
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the tag reads *next*: that is the seed the next queue will use.
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- **Random / Fixed / Step +1** — what happens after each queue. Random
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rolls a new seed, Fixed keeps it, Step +1 increments it (click it again
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for **Step −1**, which decrements). This is the sampler's own *control
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after generate*, just readable. Switching to Random also rolls a new
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seed right away, and switching from Fixed to Step takes the first step,
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so the next queue never repeats the run you just saw (ComfyUI would
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hand back its cached result).
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- **New seed** — rolls a fresh seed and pins it (Fixed), so the following
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runs all use it.
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- **Use last run** — puts the seed of the most recent run back in the box
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and pins it. Random mode replaces the seed the moment a run is queued, so
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the number in the box is already the *next* one while the image is still
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rendering; this button is how you get the one that made it.
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- **▾** — the last eight seeds this node ran with, newest first; pick any to
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restore it the same way.
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- The line underneath shows the last run's seed. The history saves with the
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workflow.
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## Output
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- **seed**: The seed, unchanged.
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## Notes and limitations
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- The last-run seed comes from the backend's own run, so it is right even
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when the control mode is *before* rather than *after* generate, and even
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when the node's output came from the cache.
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- Sampler seeds go up to 2⁶⁴−1; the box accepts that range. Seeds rolled by
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the buttons stay below 2⁵⁰, the same ceiling ComfyUI's own randomize
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uses, so the number stays exact.
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- Link a value into the **seed** row and the box goes read-only: the wire
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owns it.
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