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Artiprocher
2025-09-16 19:43:07 +08:00
parent d93e8738cd
commit 1a7f482fbd
3 changed files with 33 additions and 3 deletions
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9
diffsynth/schedulers/flow_match.py
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@@ -31,7 +31,7 @@ class FlowMatchScheduler():
self.set_timesteps(num_inference_steps)
def set_timesteps(self, num_inference_steps=100, denoising_strength=1.0, training=False, shift=None, dynamic_shift_len=None):
def set_timesteps(self, num_inference_steps=100, denoising_strength=1.0, training=False, shift=None, dynamic_shift_len=None, exponential_shift_mu=None):
if shift is not None:
self.shift = shift
sigma_start = self.sigma_min + (self.sigma_max - self.sigma_min) * denoising_strength
@@ -42,7 +42,12 @@ class FlowMatchScheduler():
if self.inverse_timesteps:
self.sigmas = torch.flip(self.sigmas, dims=[0])
if self.exponential_shift:
mu = self.calculate_shift(dynamic_shift_len) if dynamic_shift_len is not None else self.exponential_shift_mu
if exponential_shift_mu is not None:
mu = exponential_shift_mu
elif dynamic_shift_len is not None:
mu = self.calculate_shift(dynamic_shift_len)
else:
mu = self.exponential_shift_mu
self.sigmas = math.exp(mu) / (math.exp(mu) + (1 / self.sigmas - 1))
else:
self.sigmas = self.shift * self.sigmas / (1 + (self.shift - 1) * self.sigmas)