314 lines
12 KiB
Python
314 lines
12 KiB
Python
import comfy.samplers
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import comfy.sample
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from comfy.k_diffusion import sampling as k_diffusion_sampling
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import latent_preview
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import torch
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import comfy.utils
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class BasicScheduler:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"model": ("MODEL",),
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"scheduler": (comfy.samplers.SCHEDULER_NAMES, ),
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"steps": ("INT", {"default": 20, "min": 1, "max": 10000}),
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"denoise": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 1.0, "step": 0.01}),
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}
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}
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RETURN_TYPES = ("SIGMAS",)
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CATEGORY = "sampling/custom_sampling/schedulers"
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FUNCTION = "get_sigmas"
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def get_sigmas(self, model, scheduler, steps, denoise):
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total_steps = steps
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if denoise < 1.0:
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total_steps = int(steps/denoise)
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comfy.model_management.load_models_gpu([model])
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sigmas = comfy.samplers.calculate_sigmas_scheduler(model.model, scheduler, total_steps).cpu()
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sigmas = sigmas[-(steps + 1):]
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return (sigmas, )
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class KarrasScheduler:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"steps": ("INT", {"default": 20, "min": 1, "max": 10000}),
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"sigma_max": ("FLOAT", {"default": 14.614642, "min": 0.0, "max": 1000.0, "step":0.01, "round": False}),
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"sigma_min": ("FLOAT", {"default": 0.0291675, "min": 0.0, "max": 1000.0, "step":0.01, "round": False}),
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"rho": ("FLOAT", {"default": 7.0, "min": 0.0, "max": 100.0, "step":0.01, "round": False}),
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}
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}
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RETURN_TYPES = ("SIGMAS",)
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CATEGORY = "sampling/custom_sampling/schedulers"
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FUNCTION = "get_sigmas"
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def get_sigmas(self, steps, sigma_max, sigma_min, rho):
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sigmas = k_diffusion_sampling.get_sigmas_karras(n=steps, sigma_min=sigma_min, sigma_max=sigma_max, rho=rho)
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return (sigmas, )
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class ExponentialScheduler:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"steps": ("INT", {"default": 20, "min": 1, "max": 10000}),
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"sigma_max": ("FLOAT", {"default": 14.614642, "min": 0.0, "max": 1000.0, "step":0.01, "round": False}),
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"sigma_min": ("FLOAT", {"default": 0.0291675, "min": 0.0, "max": 1000.0, "step":0.01, "round": False}),
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}
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}
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RETURN_TYPES = ("SIGMAS",)
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CATEGORY = "sampling/custom_sampling/schedulers"
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FUNCTION = "get_sigmas"
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def get_sigmas(self, steps, sigma_max, sigma_min):
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sigmas = k_diffusion_sampling.get_sigmas_exponential(n=steps, sigma_min=sigma_min, sigma_max=sigma_max)
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return (sigmas, )
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class PolyexponentialScheduler:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"steps": ("INT", {"default": 20, "min": 1, "max": 10000}),
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"sigma_max": ("FLOAT", {"default": 14.614642, "min": 0.0, "max": 1000.0, "step":0.01, "round": False}),
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"sigma_min": ("FLOAT", {"default": 0.0291675, "min": 0.0, "max": 1000.0, "step":0.01, "round": False}),
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"rho": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 100.0, "step":0.01, "round": False}),
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}
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}
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RETURN_TYPES = ("SIGMAS",)
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CATEGORY = "sampling/custom_sampling/schedulers"
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FUNCTION = "get_sigmas"
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def get_sigmas(self, steps, sigma_max, sigma_min, rho):
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sigmas = k_diffusion_sampling.get_sigmas_polyexponential(n=steps, sigma_min=sigma_min, sigma_max=sigma_max, rho=rho)
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return (sigmas, )
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class SDTurboScheduler:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"model": ("MODEL",),
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"steps": ("INT", {"default": 1, "min": 1, "max": 10}),
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"denoise": ("FLOAT", {"default": 1.0, "min": 0, "max": 1.0, "step": 0.01}),
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}
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}
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RETURN_TYPES = ("SIGMAS",)
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CATEGORY = "sampling/custom_sampling/schedulers"
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FUNCTION = "get_sigmas"
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def get_sigmas(self, model, steps, denoise):
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start_step = 10 - int(10 * denoise)
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timesteps = torch.flip(torch.arange(1, 11) * 100 - 1, (0,))[start_step:start_step + steps]
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comfy.model_management.load_models_gpu([model])
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sigmas = model.model.model_sampling.sigma(timesteps)
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sigmas = torch.cat([sigmas, sigmas.new_zeros([1])])
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return (sigmas, )
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class VPScheduler:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"steps": ("INT", {"default": 20, "min": 1, "max": 10000}),
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"beta_d": ("FLOAT", {"default": 19.9, "min": 0.0, "max": 1000.0, "step":0.01, "round": False}), #TODO: fix default values
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"beta_min": ("FLOAT", {"default": 0.1, "min": 0.0, "max": 1000.0, "step":0.01, "round": False}),
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"eps_s": ("FLOAT", {"default": 0.001, "min": 0.0, "max": 1.0, "step":0.0001, "round": False}),
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}
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}
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RETURN_TYPES = ("SIGMAS",)
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CATEGORY = "sampling/custom_sampling/schedulers"
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FUNCTION = "get_sigmas"
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def get_sigmas(self, steps, beta_d, beta_min, eps_s):
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sigmas = k_diffusion_sampling.get_sigmas_vp(n=steps, beta_d=beta_d, beta_min=beta_min, eps_s=eps_s)
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return (sigmas, )
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class SplitSigmas:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"sigmas": ("SIGMAS", ),
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"step": ("INT", {"default": 0, "min": 0, "max": 10000}),
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}
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}
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RETURN_TYPES = ("SIGMAS","SIGMAS")
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CATEGORY = "sampling/custom_sampling/sigmas"
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FUNCTION = "get_sigmas"
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def get_sigmas(self, sigmas, step):
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sigmas1 = sigmas[:step + 1]
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sigmas2 = sigmas[step:]
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return (sigmas1, sigmas2)
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class FlipSigmas:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"sigmas": ("SIGMAS", ),
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}
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}
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RETURN_TYPES = ("SIGMAS",)
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CATEGORY = "sampling/custom_sampling/sigmas"
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FUNCTION = "get_sigmas"
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def get_sigmas(self, sigmas):
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sigmas = sigmas.flip(0)
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if sigmas[0] == 0:
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sigmas[0] = 0.0001
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return (sigmas,)
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class KSamplerSelect:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"sampler_name": (comfy.samplers.SAMPLER_NAMES, ),
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}
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}
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RETURN_TYPES = ("SAMPLER",)
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CATEGORY = "sampling/custom_sampling/samplers"
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FUNCTION = "get_sampler"
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def get_sampler(self, sampler_name):
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sampler = comfy.samplers.sampler_object(sampler_name)
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return (sampler, )
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class SamplerDPMPP_2M_SDE:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"solver_type": (['midpoint', 'heun'], ),
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"eta": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 100.0, "step":0.01, "round": False}),
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"s_noise": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 100.0, "step":0.01, "round": False}),
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"noise_device": (['gpu', 'cpu'], ),
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}
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}
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RETURN_TYPES = ("SAMPLER",)
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CATEGORY = "sampling/custom_sampling/samplers"
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FUNCTION = "get_sampler"
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def get_sampler(self, solver_type, eta, s_noise, noise_device):
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if noise_device == 'cpu':
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sampler_name = "dpmpp_2m_sde"
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else:
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sampler_name = "dpmpp_2m_sde_gpu"
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sampler = comfy.samplers.ksampler(sampler_name, {"eta": eta, "s_noise": s_noise, "solver_type": solver_type})
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return (sampler, )
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class SamplerDPMPP_SDE:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"eta": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 100.0, "step":0.01, "round": False}),
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"s_noise": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 100.0, "step":0.01, "round": False}),
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"r": ("FLOAT", {"default": 0.5, "min": 0.0, "max": 100.0, "step":0.01, "round": False}),
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"noise_device": (['gpu', 'cpu'], ),
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}
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}
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RETURN_TYPES = ("SAMPLER",)
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CATEGORY = "sampling/custom_sampling/samplers"
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FUNCTION = "get_sampler"
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def get_sampler(self, eta, s_noise, r, noise_device):
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if noise_device == 'cpu':
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sampler_name = "dpmpp_sde"
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else:
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sampler_name = "dpmpp_sde_gpu"
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sampler = comfy.samplers.ksampler(sampler_name, {"eta": eta, "s_noise": s_noise, "r": r})
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return (sampler, )
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class SamplerEulerAncestral:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"eta": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 100.0, "step":0.01, "round": False}),
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"s_noise": ("FLOAT", {"default": 1.0, "min": 0.0, "max": 100.0, "step":0.01, "round": False}),
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}
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}
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RETURN_TYPES = ("SAMPLER",)
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CATEGORY = "sampling/custom_sampling/samplers"
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FUNCTION = "get_sampler"
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def get_sampler(self, eta, s_noise):
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sampler = comfy.samplers.ksampler("euler_ancestral", {"eta": eta, "s_noise": s_noise})
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return (sampler, )
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class SamplerCustom:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"model": ("MODEL",),
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"add_noise": ("BOOLEAN", {"default": True}),
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"noise_seed": ("INT", {"default": 0, "min": 0, "max": 0xffffffffffffffff}),
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"cfg": ("FLOAT", {"default": 8.0, "min": 0.0, "max": 100.0, "step":0.1, "round": 0.01}),
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"positive": ("CONDITIONING", ),
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"negative": ("CONDITIONING", ),
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"sampler": ("SAMPLER", ),
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"sigmas": ("SIGMAS", ),
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"latent_image": ("LATENT", ),
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}
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}
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RETURN_TYPES = ("LATENT","LATENT")
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RETURN_NAMES = ("output", "denoised_output")
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FUNCTION = "sample"
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CATEGORY = "sampling/custom_sampling"
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def sample(self, model, add_noise, noise_seed, cfg, positive, negative, sampler, sigmas, latent_image):
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latent = latent_image
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latent_image = latent["samples"]
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if not add_noise:
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noise = torch.zeros(latent_image.size(), dtype=latent_image.dtype, layout=latent_image.layout, device="cpu")
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else:
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batch_inds = latent["batch_index"] if "batch_index" in latent else None
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noise = comfy.sample.prepare_noise(latent_image, noise_seed, batch_inds)
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noise_mask = None
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if "noise_mask" in latent:
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noise_mask = latent["noise_mask"]
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x0_output = {}
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callback = latent_preview.prepare_callback(model, sigmas.shape[-1] - 1, x0_output)
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disable_pbar = not comfy.utils.PROGRESS_BAR_ENABLED
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samples = comfy.sample.sample_custom(model, noise, cfg, sampler, sigmas, positive, negative, latent_image, noise_mask=noise_mask, callback=callback, disable_pbar=disable_pbar, seed=noise_seed)
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out = latent.copy()
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out["samples"] = samples
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if "x0" in x0_output:
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out_denoised = latent.copy()
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out_denoised["samples"] = model.model.process_latent_out(x0_output["x0"].cpu())
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else:
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out_denoised = out
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return (out, out_denoised)
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NODE_CLASS_MAPPINGS = {
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"SamplerCustom": SamplerCustom,
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"BasicScheduler": BasicScheduler,
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"KarrasScheduler": KarrasScheduler,
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"ExponentialScheduler": ExponentialScheduler,
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"PolyexponentialScheduler": PolyexponentialScheduler,
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"VPScheduler": VPScheduler,
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"SDTurboScheduler": SDTurboScheduler,
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"KSamplerSelect": KSamplerSelect,
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"SamplerEulerAncestral": SamplerEulerAncestral,
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"SamplerDPMPP_2M_SDE": SamplerDPMPP_2M_SDE,
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"SamplerDPMPP_SDE": SamplerDPMPP_SDE,
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"SplitSigmas": SplitSigmas,
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"FlipSigmas": FlipSigmas,
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}
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