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add base and max shift parameters for flow-matching samplers

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Signed-off-by: Vladimir Mandic <mandic00@live.com>
This commit is contained in:
Vladimir Mandic
2025-10-19 14:11:37 -04:00
parent b627617d14
commit 0b346ec1ce
5 changed files with 46 additions and 25 deletions
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modules/sd_samplers_diffusers.py
+14 -10
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@@ -70,7 +70,7 @@ config = {
'Euler a': { 'steps_offset': 0, 'rescale_betas_zero_snr': False, 'timestep_spacing': 'linspace' },
'Euler SGM': { 'steps_offset': 0, 'interpolation_type': "linear", 'rescale_betas_zero_snr': False, 'final_sigmas_type': 'zero', 'timestep_spacing': 'trailing', 'use_beta_sigmas': False, 'use_exponential_sigmas': False, 'use_karras_sigmas': False, 'prediction_type': "sample" },
'Euler EDM': { 'sigma_schedule': "karras" },
'Euler FlowMatch': { 'timestep_spacing': "linspace", 'shift': 1, 'use_dynamic_shifting': False, 'use_karras_sigmas': False, 'use_exponential_sigmas': False, 'use_beta_sigmas': False },
'Euler FlowMatch': { 'timestep_spacing': "linspace", 'shift': 1, 'use_dynamic_shifting': False, 'use_karras_sigmas': False, 'use_exponential_sigmas': False, 'use_beta_sigmas': False, 'base_shift': 0.5, 'max_shift': 1.15 },
'DPM++': { 'thresholding': False, 'sample_max_value': 1.0, 'algorithm_type': "dpmsolver++", 'solver_type': "midpoint", 'lower_order_final': True, 'use_karras_sigmas': False, 'use_exponential_sigmas': False, 'use_flow_sigmas': False, 'use_beta_sigmas': False, 'use_lu_lambdas': False, 'final_sigmas_type': 'zero', 'timestep_spacing': 'linspace', 'solver_order': 1 },
'DPM++ 2M': { 'thresholding': False, 'sample_max_value': 1.0, 'algorithm_type': "dpmsolver++", 'solver_type': "midpoint", 'lower_order_final': True, 'use_karras_sigmas': False, 'use_exponential_sigmas': False, 'use_flow_sigmas': False, 'use_beta_sigmas': False, 'use_lu_lambdas': False, 'final_sigmas_type': 'zero', 'timestep_spacing': 'linspace', 'solver_order': 2 },
@@ -87,17 +87,17 @@ config = {
'DPM++ 3M Inverse': { 'thresholding': False, 'sample_max_value': 1.0, 'algorithm_type': "dpmsolver++", 'solver_type': "midpoint", 'lower_order_final': True, 'use_karras_sigmas': False, 'use_exponential_sigmas': False, 'use_flow_sigmas': False, 'use_beta_sigmas': False, 'use_lu_lambdas': False, 'final_sigmas_type': 'zero', 'timestep_spacing': 'linspace', 'solver_order': 3 },
'UniPC FlowMatch': { 'predict_x0': True, 'sample_max_value': 1.0, 'solver_order': 2, 'solver_type': 'bh2', 'thresholding': False, 'use_beta_sigmas': False, 'use_exponential_sigmas': False, 'use_flow_sigmas': False, 'use_karras_sigmas': False, 'lower_order_final': True, 'timestep_spacing': 'linspace', 'final_sigmas_type': 'zero', 'rescale_betas_zero_snr': False },
'DPM2 FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver2', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012 },
'DPM2a FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver2A', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012 },
'DPM2++ 2M FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++2M', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012 },
'DPM2++ 2S FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++2S', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012 },
'DPM2++ SDE FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++sde', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012 },
'DPM2++ 2M SDE FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++2Msde', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012 },
'DPM2++ 3M SDE FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 3, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++3Msde', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012 },
'DPM2 FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver2', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012, 'base_shift': 0.5, 'max_shift': 1.15 },
'DPM2a FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver2A', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012, 'base_shift': 0.5, 'max_shift': 1.15 },
'DPM2++ 2M FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++2M', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012, 'base_shift': 0.5, 'max_shift': 1.15 },
'DPM2++ 2S FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++2S', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012, 'base_shift': 0.5, 'max_shift': 1.15 },
'DPM2++ SDE FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++sde', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012, 'base_shift': 0.5, 'max_shift': 1.15 },
'DPM2++ 2M SDE FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 2, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++2Msde', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012, 'base_shift': 0.5, 'max_shift': 1.15 },
'DPM2++ 3M SDE FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'solver_order': 3, 'sigma_schedule': None, 'use_beta_sigmas': False, 'algorithm_type': 'dpmsolver++3Msde', 'use_noise_sampler': True, 'beta_start': 0.00085, 'beta_end': 0.012, 'base_shift': 0.5, 'max_shift': 1.15 },
'Heun': { 'use_beta_sigmas': False, 'use_karras_sigmas': False, 'use_exponential_sigmas': False, 'timestep_spacing': 'linspace' },
'Heun FlowMatch': { 'timestep_spacing': "linspace", 'shift': 1 },
'LCM FlowMatch': { 'beta_start': 0.00085, 'beta_end': 0.012, 'beta_schedule': "scaled_linear", 'set_alpha_to_one': True, 'rescale_betas_zero_snr': False, 'thresholding': False, 'timestep_spacing': 'linspace' },
'LCM FlowMatch': { 'beta_start': 0.00085, 'beta_end': 0.012, 'beta_schedule': "scaled_linear", 'set_alpha_to_one': True, 'rescale_betas_zero_snr': False, 'thresholding': False, 'timestep_spacing': 'linspace', 'base_shift': 0.5, 'max_shift': 1.15 },
'DEIS': { 'solver_order': 2, 'thresholding': False, 'sample_max_value': 1.0, 'algorithm_type': "deis", 'solver_type': "logrho", 'lower_order_final': True, 'timestep_spacing': 'linspace', 'use_karras_sigmas': False, 'use_exponential_sigmas': False, 'use_flow_sigmas': False, 'use_beta_sigmas': False },
'SA Solver': {'predictor_order': 2, 'corrector_order': 2, 'thresholding': False, 'lower_order_final': True, 'use_karras_sigmas': False, 'use_flow_sigmas': False, 'use_exponential_sigmas': False, 'use_beta_sigmas': False, 'timestep_spacing': 'linspace'},
@@ -105,7 +105,7 @@ config = {
'VDM Solver': { 'clip_sample_range': 2.0, },
'TCD': { 'set_alpha_to_one': True, 'rescale_betas_zero_snr': False, 'beta_schedule': 'scaled_linear' },
'TDD': { },
'Flash FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'use_karras_sigmas': False, 'use_exponential_sigmas': False, 'use_beta_sigmas': False },
'Flash FlowMatch': { 'shift': 1, 'use_dynamic_shifting': False, 'use_karras_sigmas': False, 'use_exponential_sigmas': False, 'use_beta_sigmas': False, 'base_shift': 0.5, 'max_shift': 1.15 },
'PeRFlow': { 'prediction_type': 'ddim_eps' },
'UFOGen': { },
'BDIA DDIM': { 'clip_sample': False, 'set_alpha_to_one': True, 'steps_offset': 0, 'clip_sample_range': 1.0, 'sample_max_value': 1.0, 'timestep_spacing': 'leading', 'rescale_betas_zero_snr': False, 'thresholding': False, 'gamma': 1.0 },
@@ -264,6 +264,10 @@ class DiffusionSampler:
self.config['flow_shift'] = shared.opts.schedulers_shift if shared.opts.schedulers_shift > 0 else 3
if 'use_dynamic_shifting' in self.config:
self.config['use_dynamic_shifting'] = True if shared.opts.schedulers_shift == 0 else shared.opts.schedulers_dynamic_shift
if 'base_shift' in self.config:
self.config['base_shift'] = shared.opts.schedulers_base_shift
if 'max_shift' in self.config:
self.config['max_shift'] = shared.opts.schedulers_max_shift
if 'use_beta_sigmas' in self.config and 'sigma_schedule' in self.config:
self.config['use_beta_sigmas'] = 'StableDiffusion3' in model.__class__.__name__
if 'rescale_betas_zero_snr' in self.config: