DarthAffe/stable-diffusion.cpp
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fix: correct dpm++2s_a second model call (#1435)

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Wagner Bruna 2026-04-18 03:54:41 -03:00 committed by GitHub
parent a564fdf642
commit 2bcff67480
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1 changed files with 3 additions and 2 deletions
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src/denoiser.hpp
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@ -953,8 +953,9 @@ static sd::Tensor<float> sample_dpmpp_2s_ancestral(denoise_cb_t model,
float t_next = t_fn(sigma_down); float t_next = t_fn(sigma_down);
float h = t_next - t; float h = t_next - t;
float s = t + 0.5f * h; float s = t + 0.5f * h;
sd::Tensor<float> x2 = (sigma_fn(s) / sigma_fn(t)) * x - (exp(-h * 0.5f) - 1) * denoised; float sigma_s = sigma_fn(s);
auto denoised2_opt = model(x2, sigmas[i + 1], i + 1); sd::Tensor<float> x2 = (sigma_s / sigma_fn(t)) * x - (exp(-h * 0.5f) - 1) * denoised;
auto denoised2_opt = model(x2, sigma_s, i + 1);
if (denoised2_opt.empty()) { if (denoised2_opt.empty()) {
return {}; return {};
} }