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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 Brunaandleejet authored and GitHub committed 2026-04-02 01:35:29 +08:00
1 parent 09b12d5f6d
commit 99c1de379b
5 files changed
+117 -17
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examples/common/common.hpp
+2 -2
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@@ -1131,7 +1131,7 @@ struct SDGenerationParams {
&sample_params.guidance.slg.layer_end},
{"",
"--eta",
"eta in DDIM, only for DDIM and TCD (default: 0)",
"noise multiplier (default: 0 for ddim_trailing, tcd, res_multistep and res_2s; 1 for euler_a and dpm++2s_a)",
&sample_params.eta},
{"",
"--flow-shift",
@@ -1163,7 +1163,7 @@ struct SDGenerationParams {
&high_noise_sample_params.guidance.slg.layer_end},
{"",
"--high-noise-eta",
"(high noise) eta in DDIM, only for DDIM and TCD (default: 0)",
"(high noise) noise multiplier (default: 0 for ddim_trailing, tcd, res_multistep and res_2s; 1 for euler_a and dpm++2s_a)",
&high_noise_sample_params.eta},
{"",
"--strength",