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feat: add support for the eta parameter to ancestral samplers#1364

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wbruna wants to merge 2 commits intoleejet:masterfrom
wbruna:sd_samplers_eta
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feat: add support for the eta parameter to ancestral samplers#1364
wbruna wants to merge 2 commits intoleejet:masterfrom
wbruna:sd_samplers_eta

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@wbruna wbruna commented Mar 24, 2026

Applies the eta parameter to the DPM++(2s) and Euler ancestral implementations, so the amount of injected noise can be adjusted (e.g. Euler A with eta=0 should be the same as Euler). It reuses the calculation from the RES samplers, so it's mostly a refactor and interface/UI adjustments.

#1363 already includes this, but since this is self-contained and useful on its own, I believe it's worth including directly.

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