new samplers
DDPM DDPM Karras DPM++ 2M Turbo DPM++ 2M SDE Turbo LCM Karras
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@ -2,11 +2,13 @@ from modules import sd_samplers_kdiffusion, sd_samplers_timesteps, sd_samplers_l
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# imports for functions that previously were here and are used by other modules
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from modules.sd_samplers_common import samples_to_image_grid, sample_to_image # noqa: F401
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from modules_forge import forge_alter_samplers
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all_samplers = [
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*sd_samplers_kdiffusion.samplers_data_k_diffusion,
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*sd_samplers_timesteps.samplers_data_timesteps,
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*sd_samplers_lcm.samplers_data_lcm,
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*forge_alter_samplers.samplers_data_alter
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]
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all_samplers_map = {x.name: x for x in all_samplers}
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40
modules_forge/forge_alter_samplers.py
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40
modules_forge/forge_alter_samplers.py
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import torch
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from modules import sd_samplers_kdiffusion, sd_samplers_common
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from ldm_patched.k_diffusion import sampling as k_diffusion_sampling
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from ldm_patched.modules.samplers import calculate_sigmas_scheduler
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class AlterSampler(sd_samplers_kdiffusion.KDiffusionSampler):
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def __init__(self, sd_model, sampler_name, scheduler_name):
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self.sampler_name = sampler_name
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self.scheduler_name = scheduler_name
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self.unet = sd_model.forge_objects.unet
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sampler_function = getattr(k_diffusion_sampling, "sample_{}".format(sampler_name))
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super().__init__(sampler_function, sd_model, None)
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def get_sigmas(self, p, steps):
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if self.scheduler_name == 'turbo':
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timesteps = torch.flip(torch.arange(1, steps + 1) * float(1000.0 / steps) - 1, (0,)).round().long().clip(0, 999)
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sigmas = self.unet.model.model_sampling.sigma(timesteps)
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sigmas = torch.cat([sigmas, sigmas.new_zeros([1])])
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else:
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sigmas = calculate_sigmas_scheduler(self.unet.model, self.scheduler_name, steps)
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return sigmas.to(self.unet.load_device)
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def build_constructor(sampler_name, scheduler_name):
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def constructor(m):
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return AlterSampler(m, sampler_name, scheduler_name)
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return constructor
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samplers_data_alter = [
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sd_samplers_common.SamplerData('DDPM', build_constructor(sampler_name='ddpm', scheduler_name='normal'), ['ddpm'], {}),
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sd_samplers_common.SamplerData('DDPM Karras', build_constructor(sampler_name='ddpm', scheduler_name='karras'), ['ddpm_karras'], {}),
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sd_samplers_common.SamplerData('DPM++ 2M Turbo', build_constructor(sampler_name='dpmpp_2m', scheduler_name='turbo'), ['dpmpp_2m_turbo'], {}),
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sd_samplers_common.SamplerData('DPM++ 2M SDE Turbo', build_constructor(sampler_name='dpmpp_2m_sde', scheduler_name='turbo'), ['dpmpp_2m_sde_turbo'], {}),
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sd_samplers_common.SamplerData('LCM Karras', build_constructor(sampler_name='lcm', scheduler_name='karras'), ['lcm_karras'], {}),
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]
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