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4ca3d84277
* Upload files for Chroma Implementation * Remove trailing whitespace * trim more trailing whitespace..oops * remove unused imports * Add supported_inference_dtypes * Set min_length to 0 and remove attention_mask=True * Set min_length to 1 * get_mdulations added from blepping and minor changes * Add lora conversion if statement in lora.py * Update supported_models.py * update model_base.py * add uptream commits * set modelType.FLOW, will cause beta scheduler to work properly * Adjust memory usage factor and remove unnecessary code * fix mistake * reduce code duplication * remove unused imports * refactor for upstream sync * sync chroma-support with upstream via syncbranch patch * Update sd.py * Add Chroma as option for the OptimalStepsScheduler node
58 lines
2.5 KiB
Python
58 lines
2.5 KiB
Python
# from https://github.com/bebebe666/OptimalSteps
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import numpy as np
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import torch
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def loglinear_interp(t_steps, num_steps):
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"""
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Performs log-linear interpolation of a given array of decreasing numbers.
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"""
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xs = np.linspace(0, 1, len(t_steps))
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ys = np.log(t_steps[::-1])
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new_xs = np.linspace(0, 1, num_steps)
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new_ys = np.interp(new_xs, xs, ys)
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interped_ys = np.exp(new_ys)[::-1].copy()
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return interped_ys
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NOISE_LEVELS = {"FLUX": [0.9968, 0.9886, 0.9819, 0.975, 0.966, 0.9471, 0.9158, 0.8287, 0.5512, 0.2808, 0.001],
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"Wan":[1.0, 0.997, 0.995, 0.993, 0.991, 0.989, 0.987, 0.985, 0.98, 0.975, 0.973, 0.968, 0.96, 0.946, 0.927, 0.902, 0.864, 0.776, 0.539, 0.208, 0.001],
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"Chroma": [0.9919999837875366, 0.9900000095367432, 0.9879999756813049, 0.9850000143051147, 0.9819999933242798, 0.9779999852180481, 0.9729999899864197, 0.9679999947547913, 0.9610000252723694, 0.953000009059906, 0.9430000185966492, 0.9309999942779541, 0.9169999957084656, 0.8999999761581421, 0.8809999823570251, 0.8579999804496765, 0.8320000171661377, 0.8019999861717224, 0.7689999938011169, 0.7310000061988831, 0.6899999976158142, 0.6460000276565552, 0.5989999771118164, 0.550000011920929, 0.5009999871253967, 0.45100000500679016, 0.4020000100135803, 0.35499998927116394, 0.3109999895095825, 0.27000001072883606, 0.23199999332427979, 0.19900000095367432, 0.16899999976158142, 0.14300000667572021, 0.11999999731779099, 0.10100000351667404, 0.08399999886751175, 0.07000000029802322, 0.057999998331069946, 0.04800000041723251, 0.0],
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}
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class OptimalStepsScheduler:
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@classmethod
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def INPUT_TYPES(s):
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return {"required":
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{"model_type": (["FLUX", "Wan", "Chroma"], ),
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"steps": ("INT", {"default": 20, "min": 3, "max": 1000}),
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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_type, steps, denoise):
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total_steps = steps
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if denoise < 1.0:
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if denoise <= 0.0:
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return (torch.FloatTensor([]),)
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total_steps = round(steps * denoise)
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sigmas = NOISE_LEVELS[model_type][:]
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if (steps + 1) != len(sigmas):
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sigmas = loglinear_interp(sigmas, steps + 1)
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sigmas = sigmas[-(total_steps + 1):]
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sigmas[-1] = 0
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return (torch.FloatTensor(sigmas), )
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NODE_CLASS_MAPPINGS = {
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"OptimalStepsScheduler": OptimalStepsScheduler,
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}
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