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| author | catboxanon <122327233+catboxanon@users.noreply.github.com> | 2023-08-29 05:51:13 +0000 |
|---|---|---|
| committer | catboxanon <122327233+catboxanon@users.noreply.github.com> | 2023-08-29 05:51:13 +0000 |
| commit | 7ab16e99eedf3b5da7e596218a585f6966aee4d8 (patch) | |
| tree | 30ba1a0bf2e084c0ce5a78ee9b1f0987474db2d5 /modules/sd_samplers_kdiffusion.py | |
| parent | 63d3150dc4f5c4452a4a385329eb8954f53d6451 (diff) | |
| download | stable-diffusion-webui-gfx803-7ab16e99eedf3b5da7e596218a585f6966aee4d8.tar.gz stable-diffusion-webui-gfx803-7ab16e99eedf3b5da7e596218a585f6966aee4d8.tar.bz2 stable-diffusion-webui-gfx803-7ab16e99eedf3b5da7e596218a585f6966aee4d8.zip | |
Add option to align with sgm repo sampling implementation
Diffstat (limited to 'modules/sd_samplers_kdiffusion.py')
| -rw-r--r-- | modules/sd_samplers_kdiffusion.py | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/modules/sd_samplers_kdiffusion.py b/modules/sd_samplers_kdiffusion.py index b9e0d577..a8a2735f 100644 --- a/modules/sd_samplers_kdiffusion.py +++ b/modules/sd_samplers_kdiffusion.py @@ -144,7 +144,13 @@ class KDiffusionSampler(sd_samplers_common.Sampler): sigmas = self.get_sigmas(p, steps)
sigma_sched = sigmas[steps - t_enc - 1:]
- xi = x + noise * sigma_sched[0]
+ if opts.sgm_noise_multiplier:
+ p.extra_generation_params["SGM noise multiplier"] = True
+ noise_multiplier = torch.sqrt(1.0 + sigma_sched[0] ** 2.0)
+ else:
+ noise_multiplier = sigma_sched[0]
+
+ xi = x + noise * noise_multiplier
if opts.img2img_extra_noise > 0:
p.extra_generation_params["Extra noise"] = opts.img2img_extra_noise
@@ -197,7 +203,11 @@ class KDiffusionSampler(sd_samplers_common.Sampler): sigmas = self.get_sigmas(p, steps)
- x = x * sigmas[0]
+ if opts.sgm_noise_multiplier:
+ p.extra_generation_params["SGM noise multiplier"] = True
+ x = x * torch.sqrt(1.0 + sigmas[0] ** 2.0)
+ else:
+ x = x * sigmas[0]
extra_params_kwargs = self.initialize(p)
parameters = inspect.signature(self.func).parameters
|