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feat: add Euler CFG++ and Euler-A CFG++ samplers (#1354)

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Daniele
2026-05-14 18:29:04 +02:00
committed by GitHub
parent 60477fd50f
commit 9d683417cb
7 changed files with 120 additions and 40 deletions
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4
examples/cli/README.md
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@@ -162,10 +162,10 @@ Generation Options:
-s, --seed RNG seed (default: 42, use random seed for < 0)
--sampling-method sampling method, one of [euler, euler_a, heun, dpm2, dpm++2s_a, dpm++2m,
dpm++2mv2, ipndm, ipndm_v, lcm, ddim_trailing, tcd, res_multistep, res_2s,
er_sde] (default: euler for Flux/SD3/Wan, euler_a otherwise)
er_sde, euler_cfg_pp, euler_a_cfg_pp] (default: euler for Flux/SD3/Wan, euler_a otherwise)
--high-noise-sampling-method (high noise) sampling method, one of [euler, euler_a, heun, dpm2, dpm++2s_a,
dpm++2m, dpm++2mv2, ipndm, ipndm_v, lcm, ddim_trailing, tcd, res_multistep,
res_2s, er_sde] default: euler for Flux/SD3/Wan, euler_a otherwise
res_2s, er_sde, euler_cfg_pp, euler_a_cfg_pp] default: euler for Flux/SD3/Wan, euler_a otherwise
--scheduler denoiser sigma scheduler, one of [discrete, karras, exponential, ays, gits,
smoothstep, sgm_uniform, simple, kl_optimal, lcm, bong_tangent], default:
discrete

4
examples/common/common.cpp
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@@ -1244,12 +1244,12 @@ ArgOptions SDGenerationParams::get_options() {
on_seed_arg},
{"",
"--sampling-method",
"sampling method, one of [euler, euler_a, heun, dpm2, dpm++2s_a, dpm++2m, dpm++2mv2, ipndm, ipndm_v, lcm, ddim_trailing, tcd, res_multistep, res_2s, er_sde] "
"sampling method, one of [euler, euler_a, heun, dpm2, dpm++2s_a, dpm++2m, dpm++2mv2, ipndm, ipndm_v, lcm, ddim_trailing, tcd, res_multistep, res_2s, er_sde, euler_cfg_pp, euler_a_cfg_pp]"
"(default: euler for Flux/SD3/Wan, euler_a otherwise)",
on_sample_method_arg},
{"",
"--high-noise-sampling-method",
"(high noise) sampling method, one of [euler, euler_a, heun, dpm2, dpm++2s_a, dpm++2m, dpm++2mv2, ipndm, ipndm_v, lcm, ddim_trailing, tcd, res_multistep, res_2s, er_sde]"
"(high noise) sampling method, one of [euler, euler_a, heun, dpm2, dpm++2s_a, dpm++2m, dpm++2mv2, ipndm, ipndm_v, lcm, ddim_trailing, tcd, res_multistep, res_2s, er_sde, euler_cfg_pp, euler_a_cfg_pp]"
" default: euler for Flux/SD3/Wan, euler_a otherwise",
on_high_noise_sample_method_arg},
{"",

4
examples/server/README.md
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@@ -264,10 +264,10 @@ Default Generation Options:
-s, --seed RNG seed (default: 42, use random seed for < 0)
--sampling-method sampling method, one of [euler, euler_a, heun, dpm2, dpm++2s_a, dpm++2m,
dpm++2mv2, ipndm, ipndm_v, lcm, ddim_trailing, tcd, res_multistep, res_2s,
er_sde] (default: euler for Flux/SD3/Wan, euler_a otherwise)
er_sde, euler_cfg_pp, euler_a_cfg_pp] (default: euler for Flux/SD3/Wan, euler_a otherwise)
--high-noise-sampling-method (high noise) sampling method, one of [euler, euler_a, heun, dpm2, dpm++2s_a,
dpm++2m, dpm++2mv2, ipndm, ipndm_v, lcm, ddim_trailing, tcd, res_multistep,
res_2s, er_sde] default: euler for Flux/SD3/Wan, euler_a otherwise
res_2s, er_sde, euler_cfg_pp, euler_a_cfg_pp] default: euler for Flux/SD3/Wan, euler_a otherwise
--scheduler denoiser sigma scheduler, one of [discrete, karras, exponential, ays, gits,
smoothstep, sgm_uniform, simple, kl_optimal, lcm, bong_tangent], default:
discrete

4
examples/server/routes_sdapi.cpp
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@@ -67,6 +67,10 @@ static enum sample_method_t get_sdapi_sample_method(std::string name) {
{"k_res_multistep", RES_MULTISTEP_SAMPLE_METHOD},
{"res 2s", RES_2S_SAMPLE_METHOD},
{"k_res_2s", RES_2S_SAMPLE_METHOD},
{"euler_cfg_pp", EULER_CFG_PP_SAMPLE_METHOD},
{"k_euler_cfg_pp", EULER_CFG_PP_SAMPLE_METHOD},
{"euler_a_cfg_pp", EULER_CFG_PP_SAMPLE_METHOD},
{"k_euler_a_cfg_pp", EULER_CFG_PP_SAMPLE_METHOD},
};
auto it = hardcoded.find(name);
return it != hardcoded.end() ? it->second : SAMPLE_METHOD_COUNT;