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feat: ancestral sampler implementations for flow models (#1374)

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* feat: add support for the eta parameter to ancestral samplers

* feat: Euler Ancestral sampler implementation for flow models

* refine flow ancestral sampling and normalize eta defaults

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Co-authored-by: leejet <leejet714@gmail.com>
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Wagner Bruna
2026-04-01 14:35:29 -03:00
committed by GitHub
parent 09b12d5f6d
commit 99c1de379b
5 changed files with 117 additions and 17 deletions
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examples/cli/README.md
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@@ -114,7 +114,7 @@ Generation Options:
medium
--skip-layer-start <float> SLG enabling point (default: 0.01)
--skip-layer-end <float> SLG disabling point (default: 0.2)
--eta <float> eta in DDIM, only for DDIM and TCD (default: 0)
--eta <float> noise multiplier (default: 0 for ddim_trailing, tcd, res_multistep and res_2s; 1 for euler_a and dpm++2s_a)
--flow-shift <float> shift value for Flow models like SD3.x or WAN (default: auto)
--high-noise-cfg-scale <float> (high noise) unconditional guidance scale: (default: 7.0)
--high-noise-img-cfg-scale <float> (high noise) image guidance scale for inpaint or instruct-pix2pix models (default: same as --cfg-scale)
@@ -122,7 +122,7 @@ Generation Options:
--high-noise-slg-scale <float> (high noise) skip layer guidance (SLG) scale, only for DiT models: (default: 0)
--high-noise-skip-layer-start <float> (high noise) SLG enabling point (default: 0.01)
--high-noise-skip-layer-end <float> (high noise) SLG disabling point (default: 0.2)
--high-noise-eta <float> (high noise) eta in DDIM, only for DDIM and TCD (default: 0)
--high-noise-eta <float> (high noise) noise multiplier (default: 0 for ddim_trailing, tcd, res_multistep and res_2s; 1 for euler_a and dpm++2s_a)
--strength <float> strength for noising/unnoising (default: 0.75)
--pm-style-strength <float>
--control-strength <float> strength to apply Control Net (default: 0.9). 1.0 corresponds to full destruction of information in init image