580 lines
25 KiB
Python
580 lines
25 KiB
Python
from __future__ import division
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import torch
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from torch import Tensor
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import comfy.model_management
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import comfy.model_patcher
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from comfy.model_base import BaseModel
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from typing import List, Union, Tuple, Dict
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from tqdm import tqdm
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opt_C = 4
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opt_f = 8
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def ceildiv(big, small):
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# Correct ceiling division that avoids floating-point errors and importing math.ceil.
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return -(big // -small)
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from enum import Enum
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class BlendMode(Enum): # i.e. LayerType
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FOREGROUND = 'Foreground'
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BACKGROUND = 'Background'
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class Processing: ...
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class Device: ...
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devices = Device()
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devices.device = comfy.model_management.get_torch_device()
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def null_decorator(fn):
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def wrapper(*args, **kwargs):
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return fn(*args, **kwargs)
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return wrapper
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keep_signature = null_decorator
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controlnet = null_decorator
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stablesr = null_decorator
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grid_bbox = null_decorator
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custom_bbox = null_decorator
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noise_inverse = null_decorator
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class BBox:
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''' grid bbox '''
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def __init__(self, x:int, y:int, w:int, h:int):
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self.x = x
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self.y = y
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self.w = w
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self.h = h
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self.box = [x, y, x+w, y+h]
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self.slicer = slice(None), slice(None), slice(y, y+h), slice(x, x+w)
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def __getitem__(self, idx:int) -> int:
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return self.box[idx]
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def split_bboxes(w:int, h:int, tile_w:int, tile_h:int, overlap:int=16, init_weight:Union[Tensor, float]=1.0) -> Tuple[List[BBox], Tensor]:
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cols = ceildiv((w - overlap) , (tile_w - overlap))
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rows = ceildiv((h - overlap) , (tile_h - overlap))
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dx = (w - tile_w) / (cols - 1) if cols > 1 else 0
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dy = (h - tile_h) / (rows - 1) if rows > 1 else 0
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bbox_list: List[BBox] = []
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weight = torch.zeros((1, 1, h, w), device=devices.device, dtype=torch.float32)
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for row in range(rows):
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y = min(int(row * dy), h - tile_h)
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for col in range(cols):
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x = min(int(col * dx), w - tile_w)
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bbox = BBox(x, y, tile_w, tile_h)
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bbox_list.append(bbox)
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weight[bbox.slicer] += init_weight
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return bbox_list, weight
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class CustomBBox(BBox):
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''' region control bbox '''
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pass
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class AbstractDiffusion:
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def __init__(self):
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self.method = self.__class__.__name__
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self.pbar = None
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self.w: int = 512
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self.h: int = 512
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self.tile_width: int = None
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self.tile_height: int = None
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self.tile_overlap: int = None
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self.tile_batch_size: int = None
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# cache. final result of current sampling step, [B, C=4, H//8, W//8]
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# avoiding overhead of creating new tensors and weight summing
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self.x_buffer: Tensor = None
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# self.w: int = int(self.p.width // opt_f) # latent size
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# self.h: int = int(self.p.height // opt_f)
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# weights for background & grid bboxes
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self._weights: Tensor = None
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# self.weights: Tensor = torch.zeros((1, 1, self.h, self.w), device=devices.device, dtype=torch.float32)
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self._init_grid_bbox = None
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self._init_done = None
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# count the step correctly
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self.step_count = 0
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self.inner_loop_count = 0
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self.kdiff_step = -1
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# ext. Grid tiling painting (grid bbox)
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self.enable_grid_bbox: bool = False
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self.tile_w: int = None
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self.tile_h: int = None
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self.tile_bs: int = None
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self.num_tiles: int = None
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self.num_batches: int = None
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self.batched_bboxes: List[List[BBox]] = []
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# ext. Region Prompt Control (custom bbox)
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self.enable_custom_bbox: bool = False
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self.custom_bboxes: List[CustomBBox] = []
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# self.cond_basis: Cond = None
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# self.uncond_basis: Uncond = None
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# self.draw_background: bool = True # by default we draw major prompts in grid tiles
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# self.causal_layers: bool = None
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# ext. ControlNet
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self.enable_controlnet: bool = False
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# self.controlnet_script: ModuleType = None
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self.control_tensor_batch: List[List[Tensor]] = None # []
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self.control_params: Dict[str, Tensor] = None # {}
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self.control_tensor_cpu: bool = None
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self.control_tensor_custom: List[List[Tensor]] = []
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self.draw_background: bool = True # by default we draw major prompts in grid tiles
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self.control_tensor_cpu = False
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def repeat_tensor(self, x:Tensor, n:int, concat=False, concat_to=0) -> Tensor:
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''' repeat the tensor on it's first dim '''
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if n == 1: return x
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B = x.shape[0]
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r_dims = len(x.shape) - 1
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if B == 1: # batch_size = 1 (not `tile_batch_size`)
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shape = [n] + [-1] * r_dims # [N, -1, ...]
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return x.expand(shape) # `expand` is much lighter than `tile`
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else:
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if concat:
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return torch.cat([x for _ in range(n)], dim=0)[:concat_to]
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shape = [n] + [1] * r_dims # [N, 1, ...]
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return x.repeat(shape)
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def update_pbar(self):
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if self.pbar.n >= self.pbar.total:
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self.pbar.close()
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else:
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# self.pbar.update()
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sampling_step = 20
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if self.step_count == sampling_step:
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self.inner_loop_count += 1
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if self.inner_loop_count < self.total_bboxes:
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self.pbar.update()
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else:
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self.step_count = sampling_step
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self.inner_loop_count = 0
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def reset_buffer(self, x_in:Tensor):
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# Judge if the shape of x_in is the same as the shape of x_buffer
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if self.x_buffer is None or self.x_buffer.shape != x_in.shape:
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self.x_buffer = torch.zeros_like(x_in, device=x_in.device, dtype=x_in.dtype)
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else:
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self.x_buffer.zero_()
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@grid_bbox
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def init_grid_bbox(self, tile_w:int, tile_h:int, overlap:int, tile_bs:int):
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# if self._init_grid_bbox is not None: return
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# self._init_grid_bbox = True
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self.weights: Tensor = torch.zeros((1, 1, self.h, self.w), device=devices.device, dtype=torch.float32)
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self.enable_grid_bbox = True
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self.tile_w = min(tile_w, self.w)
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self.tile_h = min(tile_h, self.h)
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overlap = max(0, min(overlap, min(tile_w, tile_h) - 4))
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# split the latent into overlapped tiles, then batching
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# weights basically indicate how many times a pixel is painted
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bboxes, weights = split_bboxes(self.w, self.h, self.tile_w, self.tile_h, overlap, self.get_tile_weights())
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self.weights += weights
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self.num_tiles = len(bboxes)
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self.num_batches = ceildiv(self.num_tiles , tile_bs)
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self.tile_bs = ceildiv(len(bboxes) , self.num_batches) # optimal_batch_size
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self.batched_bboxes = [bboxes[i*self.tile_bs:(i+1)*self.tile_bs] for i in range(self.num_batches)]
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@grid_bbox
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def get_tile_weights(self) -> Union[Tensor, float]:
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return 1.0
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@noise_inverse
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def init_noise_inverse(self, steps:int, retouch:float, get_cache_callback, set_cache_callback, renoise_strength:float, renoise_kernel:int):
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self.noise_inverse_enabled = True
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self.noise_inverse_steps = steps
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self.noise_inverse_retouch = float(retouch)
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self.noise_inverse_renoise_strength = float(renoise_strength)
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self.noise_inverse_renoise_kernel = int(renoise_kernel)
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self.noise_inverse_set_cache = set_cache_callback
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self.noise_inverse_get_cache = get_cache_callback
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def init_done(self):
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'''
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Call this after all `init_*`, settings are done, now perform:
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- settings sanity check
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- pre-computations, cache init
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- anything thing needed before denoising starts
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'''
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# if self._init_done is not None: return
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# self._init_done = True
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self.total_bboxes = 0
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if self.enable_grid_bbox: self.total_bboxes += self.num_batches
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if self.enable_custom_bbox: self.total_bboxes += len(self.custom_bboxes)
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assert self.total_bboxes > 0, "Nothing to paint! No background to draw and no custom bboxes were provided."
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# sampling_steps = _steps
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# self.pbar = tqdm(total=(self.total_bboxes) * sampling_steps, desc=f"{self.method} Sampling: ")
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@controlnet
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def prepare_controlnet_tensors(self, refresh:bool=False, tensor=None):
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''' Crop the control tensor into tiles and cache them '''
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# if not refresh:
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# if self.control_tensor_batch is not None or self.control_params is not None: return
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# if hasattr(self, 'control_tensor_batch'):
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# del self.control_tensor_batch
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# self.control_tensor_batch = None
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# if hasattr(self, 'org_control_tensor_batch'):
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# del self.org_control_tensor_batch
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# self.org_control_tensor_batch = None
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tensors = [tensor]
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self.org_control_tensor_batch = tensors
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self.control_tensor_batch = []
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for i in range(len(tensors)):
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control_tile_list = []
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control_tensor = tensors[i]
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for bboxes in self.batched_bboxes:
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single_batch_tensors = []
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for bbox in bboxes:
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if len(control_tensor.shape) == 3:
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control_tensor.unsqueeze_(0)
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control_tile = control_tensor[:, :, bbox[1]*opt_f:bbox[3]*opt_f, bbox[0]*opt_f:bbox[2]*opt_f]
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single_batch_tensors.append(control_tile)
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control_tile = torch.cat(single_batch_tensors, dim=0)
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if self.control_tensor_cpu:
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control_tile = control_tile.cpu()
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control_tile_list.append(control_tile)
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self.control_tensor_batch.append(control_tile_list)
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if len(self.custom_bboxes) > 0:
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custom_control_tile_list = []
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for bbox in self.custom_bboxes:
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if len(control_tensor.shape) == 3:
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control_tensor.unsqueeze_(0)
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control_tile = control_tensor[:, :, bbox[1]*opt_f:bbox[3]*opt_f, bbox[0]*opt_f:bbox[2]*opt_f]
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if self.control_tensor_cpu:
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control_tile = control_tile.cpu()
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custom_control_tile_list.append(control_tile)
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self.control_tensor_custom.append(custom_control_tile_list)
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@controlnet
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def switch_controlnet_tensors(self, batch_id:int, x_batch_size:int, tile_batch_size:int, is_denoise=False):
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# if not self.enable_controlnet: return
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if self.control_tensor_batch is None: return
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self.control_params = [0]
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for param_id in range(len(self.control_params)):
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# tensor that was concatenated in `prepare_controlnet_tensors`
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control_tile = self.control_tensor_batch[param_id][batch_id]
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# broadcast to latent batch size
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if x_batch_size > 1: # self.is_kdiff:
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all_control_tile = []
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for i in range(tile_batch_size):
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this_control_tile = [control_tile[i].unsqueeze(0)] * x_batch_size
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all_control_tile.append(torch.cat(this_control_tile, dim=0))
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control_tile = torch.cat(all_control_tile, dim=0) # [:x_tile.shape[0]]
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self.control_tensor_batch[param_id][batch_id] = control_tile
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# else:
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# control_tile = control_tile.repeat([x_batch_size if is_denoise else x_batch_size * 2, 1, 1, 1])
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# self.control_params[param_id].hint_cond = control_tile.to(devices.device)
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import numpy as np
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from numpy import pi, exp, sqrt
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def gaussian_weights(tile_w:int, tile_h:int) -> Tensor:
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'''
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Copy from the original implementation of Mixture of Diffusers
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https://github.com/albarji/mixture-of-diffusers/blob/master/mixdiff/tiling.py
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This generates gaussian weights to smooth the noise of each tile.
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This is critical for this method to work.
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'''
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f = lambda x, midpoint, var=0.01: exp(-(x-midpoint)*(x-midpoint) / (tile_w*tile_w) / (2*var)) / sqrt(2*pi*var)
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x_probs = [f(x, (tile_w - 1) / 2) for x in range(tile_w)] # -1 because index goes from 0 to latent_width - 1
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y_probs = [f(y, tile_h / 2) for y in range(tile_h)]
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w = np.outer(y_probs, x_probs)
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return torch.from_numpy(w).to(devices.device, dtype=torch.float32)
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class CondDict: ...
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class MultiDiffusion(AbstractDiffusion):
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@torch.no_grad()
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def apply_model(self, model: BaseModel.apply_model, args: dict):
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# self.inner_model = model
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c_in: dict = args["c"]
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x_in: Tensor = args["input"]
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t_in: Tensor = args["timestep"]
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cond_or_uncond = args["cond_or_uncond"]
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self.w = x_in.shape[3]
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self.h = x_in.shape[2]
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self.init_grid_bbox(self.tile_width, self.tile_height, self.tile_overlap, self.tile_batch_size)
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# init everything done, perform sanity check & pre-computations
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self.init_done()
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N, C, H, W = x_in.shape
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# clear buffer canvas
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self.reset_buffer(x_in)
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c_crossattn = c_in['c_crossattn']
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c_crossattn = c_crossattn.clone() if c_crossattn.shape[0] == 1 else c_crossattn
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if 'control' in c_in:
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control = c_in['control']
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cond_hint_original = control.cond_hint_original
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# Background sampling (grid bbox)
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if self.draw_background:
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for batch_id, bboxes in enumerate(self.batched_bboxes):
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if comfy.model_management.processing_interrupted():
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# self.pbar.close()
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return x_in
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# batching & compute tiles
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x_tile = torch.cat([x_in[bbox.slicer] for bbox in bboxes], dim=0) # [TB, C, TH, TW]
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n_rep = len(bboxes)
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ts_tile = self.repeat_tensor(t_in, n_rep)
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cond_tile = self.repeat_tensor(c_crossattn, n_rep)
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c_tile = c_in.copy()
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c_tile['c_crossattn'] = cond_tile
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if 'y' in c_tile:
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c_tile['y'] = self.repeat_tensor(c_tile['y'], n_rep)
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# controlnet tiling
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# self.switch_controlnet_tensors(batch_id, N, len(bboxes))
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if 'control' in c_in:
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param_id = 0
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self.prepare_controlnet_tensors(refresh=True, tensor=control.cond_hint_original)
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self.switch_controlnet_tensors(batch_id, N, len(bboxes))
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control.cond_hint_original = self.control_tensor_batch[param_id][batch_id]
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c_tile['control'] = control.get_control(x_tile, ts_tile, c_tile, len(cond_or_uncond))
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control.cond_hint_original = cond_hint_original
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if hasattr(control, 'cond_hint'):
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del control.cond_hint
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control.cond_hint = None
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# stablesr tiling
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# self.switch_stablesr_tensors(batch_id)
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x_tile_out = model(x_tile, ts_tile, **c_tile)
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for i, bbox in enumerate(bboxes):
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self.x_buffer[bbox.slicer] += x_tile_out[i*N:(i+1)*N, :, :, :]
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# update progress bar
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# self.update_pbar()
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# Averaging background buffer
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x_out = torch.where(self.weights > 1, self.x_buffer / self.weights, self.x_buffer)
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return x_out
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class MixtureOfDiffusers(AbstractDiffusion):
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"""
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Mixture-of-Diffusers Implementation
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https://github.com/albarji/mixture-of-diffusers
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"""
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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# weights for custom bboxes
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self.custom_weights: List[Tensor] = []
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self.get_weight = gaussian_weights
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def init_done(self):
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super().init_done()
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# The original gaussian weights can be extremely small, so we rescale them for numerical stability
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self.rescale_factor = 1 / self.weights
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# Meanwhile, we rescale the custom weights in advance to save time of slicing
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for bbox_id, bbox in enumerate(self.custom_bboxes):
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if bbox.blend_mode == BlendMode.BACKGROUND:
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self.custom_weights[bbox_id] *= self.rescale_factor[bbox.slicer]
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@grid_bbox
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def get_tile_weights(self) -> Tensor:
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# weights for grid bboxes
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# if not hasattr(self, 'tile_weights'):
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# x_in can change sizes cause of ConditioningSetArea, so we have to recalcualte each time
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self.tile_weights = self.get_weight(self.tile_w, self.tile_h)
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return self.tile_weights
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@torch.no_grad()
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def apply_model(self, model: BaseModel.apply_model, args: dict):
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# self.inner_model = model
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c_in: dict = args["c"]
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# x_in: Tensor = args["input_bak"] if 'input_bak' in args else args["input"]
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x_in: Tensor = args["input"]
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t_in: Tensor = args["timestep"]
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cond_or_uncond = args["cond_or_uncond"]
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# x_in_bak = x_in
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self.w = x_in.shape[3]
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self.h = x_in.shape[2]
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self.init_grid_bbox(self.tile_width, self.tile_height, self.tile_overlap, self.tile_batch_size)
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# init everything done, perform sanity check & pre-computations
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self.init_done()
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# clear buffer canvas
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self.reset_buffer(x_in)
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N, C, H, W = x_in.shape
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# self.pbar = tqdm(total=(self.total_bboxes) * sampling_steps, desc=f"{self.method} Sampling: ")
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# self.pbar = tqdm(total=len(self.batched_bboxes), desc=f"{self.method} Sampling: ")
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c_crossattn = c_in['c_crossattn']
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if 'control' in c_in:
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control = c_in['control']
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cond_hint_original = control.cond_hint_original
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# Global sampling
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if self.draw_background:
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|
for batch_id, bboxes in enumerate(self.batched_bboxes): # batch_id is the `Latent tile batch size`
|
|
# comfy.model_management.throw_exception_if_processing_interrupted()
|
|
if comfy.model_management.processing_interrupted():
|
|
# self.pbar.close()
|
|
return x_in
|
|
|
|
# batching
|
|
x_tile_list = []
|
|
t_tile_list = []
|
|
tcond_tile_list = []
|
|
icond_tile_list = []
|
|
vcond_tile_list = []
|
|
control_list = []
|
|
for bbox in bboxes:
|
|
# print('=== batch_id',batch_id,' len bboxes',len(bboxes),'len(self.batched_bboxes)', len(self.batched_bboxes), x_in.shape,x_in[bbox.slicer].shape, bbox.slicer)
|
|
x_tile_list.append(x_in[bbox.slicer])
|
|
t_tile_list.append(t_in)
|
|
if isinstance(c_in, dict):
|
|
# tcond
|
|
tcond_tile = c_crossattn #self.get_tcond(c_in) # cond, [1, 77, 768]
|
|
tcond_tile_list.append(tcond_tile)
|
|
# present in sdxl
|
|
if 'y' in c_in:
|
|
icond=c_in['y'] # self.get_icond(c_in)
|
|
if icond.shape[2:] == (self.h, self.w):
|
|
icond = icond[bbox.slicer]
|
|
icond_tile_list.append(icond)
|
|
# # vcond:
|
|
# vcond = self.get_vcond(c_in)
|
|
# vcond_tile_list.append(vcond)
|
|
else:
|
|
print('>> [WARN] not supported, make an issue on github!!')
|
|
c_tile = c_in.copy()
|
|
x_tile = torch.cat(x_tile_list, dim=0) # differs each
|
|
t_tile = torch.cat(t_tile_list, dim=0) # just repeat
|
|
tcond_tile = torch.cat(tcond_tile_list, dim=0) # just repeat
|
|
if 'y' in c_in:
|
|
icond_tile = torch.cat(icond_tile_list, dim=0) # differs each
|
|
c_tile['y'] = icond_tile
|
|
c_tile['c_crossattn'] = tcond_tile
|
|
# vcond_tile = torch.cat(vcond_tile_list, dim=0) if None not in vcond_tile_list else None # just repeat
|
|
|
|
# controlnet
|
|
# self.switch_controlnet_tensors(batch_id, N, len(bboxes), is_denoise=True)
|
|
if 'control' in c_in:
|
|
param_id = 0
|
|
self.prepare_controlnet_tensors(refresh=True, tensor=control.cond_hint_original)
|
|
self.switch_controlnet_tensors(batch_id, N, len(bboxes))
|
|
control.cond_hint_original = self.control_tensor_batch[param_id][batch_id]
|
|
c_tile['control'] = control.get_control(x_tile, t_tile, c_tile, len(cond_or_uncond))
|
|
control.cond_hint_original = cond_hint_original
|
|
if hasattr(control, 'cond_hint'):
|
|
del control.cond_hint
|
|
control.cond_hint = None
|
|
|
|
# stablesr
|
|
# self.switch_stablesr_tensors(batch_id)
|
|
|
|
# denoising: here the x is the noise
|
|
# x_tile.batched_bboxes = self.batched_bboxes
|
|
# print('=== x_tile',x_tile.shape)
|
|
x_tile_out = model(x_tile, t_tile, **c_tile)
|
|
|
|
# de-batching
|
|
for i, bbox in enumerate(bboxes):
|
|
# These weights can be calcluated in advance, but will cost a lot of vram
|
|
# when you have many tiles. So we calculate it here.
|
|
w = self.tile_weights * self.rescale_factor[bbox.slicer]
|
|
self.x_buffer[bbox.slicer] += x_tile_out[i*N:(i+1)*N, :, :, :] * w
|
|
|
|
# self.update_pbar()
|
|
# self.pbar.update()
|
|
# self.pbar.close()
|
|
x_out = self.x_buffer
|
|
return x_out
|
|
|
|
from .utils import hook_all
|
|
hook_all()
|
|
|
|
MAX_RESOLUTION=8192
|
|
class TiledDiffusion():
|
|
@classmethod
|
|
def INPUT_TYPES(s):
|
|
return {"required": {"model": ("MODEL", ),
|
|
"method": (["Mixture of Diffusers", "MultiDiffusion"], {"default": "Mixture of Diffusers"}),
|
|
# "tile_width": ("INT", {"default": 96, "min": 16, "max": 256, "step": 16}),
|
|
"tile_width": ("INT", {"default": 96*opt_f, "min": 16, "max": MAX_RESOLUTION, "step": 16}),
|
|
# "tile_height": ("INT", {"default": 96, "min": 16, "max": 256, "step": 16}),
|
|
"tile_height": ("INT", {"default": 96*opt_f, "min": 16, "max": MAX_RESOLUTION, "step": 16}),
|
|
"tile_overlap": ("INT", {"default": 8*opt_f, "min": 0, "max": 256*opt_f, "step": 4*opt_f}),
|
|
"tile_batch_size": ("INT", {"default": 4, "min": 1, "max": 8, "step": 1}),
|
|
}}
|
|
RETURN_TYPES = ("MODEL",)
|
|
FUNCTION = "apply"
|
|
CATEGORY = "_for_testing"
|
|
|
|
def apply(self, model: comfy.model_patcher.ModelPatcher, method, tile_width, tile_height, tile_overlap, tile_batch_size):
|
|
if method == "Mixture of Diffusers":
|
|
delegate = MixtureOfDiffusers()
|
|
else:
|
|
delegate = MultiDiffusion()
|
|
|
|
# if noise_inversion:
|
|
# get_cache_callback = self.noise_inverse_get_cache
|
|
# set_cache_callback = None # lambda x0, xt, prompts: self.noise_inverse_set_cache(p, x0, xt, prompts, steps, retouch)
|
|
# delegate.init_noise_inverse(steps, retouch, get_cache_callback, set_cache_callback, renoise_strength, renoise_kernel_size)
|
|
|
|
delegate.tile_width = tile_width // opt_f
|
|
delegate.tile_height = tile_height // opt_f
|
|
delegate.tile_overlap = tile_overlap // opt_f
|
|
delegate.tile_batch_size = tile_batch_size
|
|
# delegate.init_grid_bbox(tile_width, tile_height, tile_overlap, tile_batch_size)
|
|
# # init everything done, perform sanity check & pre-computations
|
|
# delegate.init_done()
|
|
# hijack the behaviours
|
|
# delegate.hook()
|
|
model = model.clone()
|
|
if 'model_function_wrapper' in model.model_options:
|
|
tmp = model.model_options.pop("model_function_wrapper", None)
|
|
del tmp
|
|
model.set_model_unet_function_wrapper(delegate.apply_model)
|
|
model.model_options['tiled_diffusion'] = True
|
|
return (model,)
|
|
|
|
class NoiseInversion():
|
|
@classmethod
|
|
def INPUT_TYPES(s):
|
|
return {"required": {"model": ("MODEL", ),
|
|
"positive": ("CONDITIONING", ),
|
|
"negative": ("CONDITIONING", ),
|
|
"latent_image": ("LATENT", ),
|
|
"image": ("IMAGE", ),
|
|
"steps": ("INT", {"default": 10, "min": 1, "max": 208, "step": 1}),
|
|
"retouch": ("FLOAT", {"default": 1, "min": 1, "max": 100, "step": 0.1}),
|
|
"renoise_strength": ("FLOAT", {"default": 1, "min": 1, "max": 2, "step": 0.01}),
|
|
"renoise_kernel_size": ("INT", {"default": 2, "min": 2, "max": 512, "step": 1}),
|
|
}}
|
|
RETURN_TYPES = ("LATENT",)
|
|
FUNCTION = "sample"
|
|
CATEGORY = "sampling"
|
|
def sample(self, model: comfy.model_patcher.ModelPatcher, positive, negative,
|
|
latent_image, image, steps, retouch, renoise_strength, renoise_kernel_size):
|
|
return (latent_image,)
|
|
|
|
NODE_CLASS_MAPPINGS = {
|
|
"TiledDiffusion": TiledDiffusion,
|
|
"NoiseInversion": NoiseInversion,
|
|
}
|
|
NODE_DISPLAY_NAME_MAPPINGS = {
|
|
"TiledDiffusion": "Tiled Diffusion",
|
|
"NoiseInversion": "Noise Inversion",
|
|
} |