fix: correct sampling when gamma is 0 (#3093)

2024-06-04 21:03:37 +02:00 · 2024-06-04 21:03:37 +02:00 · b58bc7774e
parent 2d55a5f257
commit b58bc7774e
1 changed files with 2 additions and 0 deletions
--- a/ldm_patched/k_diffusion/sampling.py
+++ b/ldm_patched/k_diffusion/sampling.py
@ -832,5 +832,7 @@ def sample_tcd(model, x, sigmas, extra_args=None, callback=None, disable=None, n
        if eta > 0 and sigmas[i + 1] > 0:
            noise = noise_sampler(sigmas[i], sigmas[i + 1])
            x = x / alpha_prod_s[i+1].sqrt() + noise * (sigmas[i+1]**2 + 1 - 1/alpha_prod_s[i+1]).sqrt()
+        else:
+            x *= torch.sqrt(1.0 + sigmas[i + 1] ** 2)

    return x