151 lines
4.3 KiB
Python
151 lines
4.3 KiB
Python
import os
|
|
import json
|
|
import torch
|
|
import folder_paths
|
|
|
|
from .conf import pixart_conf, pixart_res
|
|
from .loader import load_pixart
|
|
from .sampler import sample_pixart
|
|
|
|
class PixArtCheckpointLoader:
|
|
@classmethod
|
|
def INPUT_TYPES(s):
|
|
return {
|
|
"required": {
|
|
"ckpt_name": (folder_paths.get_filename_list("checkpoints"),),
|
|
"model": (list(pixart_conf.keys()),),
|
|
}
|
|
}
|
|
RETURN_TYPES = ("MODEL",)
|
|
RETURN_NAMES = ("model",)
|
|
FUNCTION = "load_checkpoint"
|
|
CATEGORY = "ExtraModels/PixArt"
|
|
TITLE = "PixArt Checkpoint Loader"
|
|
|
|
def load_checkpoint(self, ckpt_name, model):
|
|
ckpt_path = folder_paths.get_full_path("checkpoints", ckpt_name)
|
|
model_conf = pixart_conf[model]
|
|
model = load_pixart(
|
|
model_path = ckpt_path,
|
|
model_conf = model_conf,
|
|
)
|
|
return (model,)
|
|
|
|
class PixArtResolutionSelect():
|
|
@classmethod
|
|
def INPUT_TYPES(s):
|
|
return {
|
|
"required": {
|
|
"model": (list(pixart_conf.keys()),),
|
|
# keys are the same for both
|
|
"ratio": (list(pixart_res["PixArtMS_XL_2"].keys()),{"default":"1.00"}),
|
|
}
|
|
}
|
|
RETURN_TYPES = ("INT","INT")
|
|
RETURN_NAMES = ("width","height")
|
|
FUNCTION = "get_res"
|
|
CATEGORY = "ExtraModels/PixArt"
|
|
TITLE = "PixArt Resolution Select"
|
|
|
|
def get_res(self, model, ratio):
|
|
width, height = pixart_res[model][ratio]
|
|
return (width,height)
|
|
|
|
class PixArtDPMSampler:
|
|
"""
|
|
The sampler from the reference code.
|
|
"""
|
|
@classmethod
|
|
def INPUT_TYPES(s):
|
|
return {
|
|
"required": {
|
|
"model": ("MODEL", ),
|
|
"seed": ("INT", {"default": 0, "min": 0, "max": 0xffffffffffffffff}),
|
|
"steps": ("INT", {"default": 20, "min": 1, "max": 10000}),
|
|
"cfg": ("FLOAT", {"default": 4.5, "min": 0.0, "max": 100.0, "step":0.5, "round": 0.01}),
|
|
"noise_schedule": (["linear","squaredcos_cap_v2"],{"default":"linear"}),
|
|
"noise_schedule_vp": (["linear","discrete"],{"default":"discrete"}),
|
|
"positive": ("CONDITIONING", ),
|
|
"negative": ("CONDITIONING", ),
|
|
"latent_image": ("LATENT", ),
|
|
}
|
|
}
|
|
RETURN_TYPES = ("LATENT",)
|
|
FUNCTION = "sample"
|
|
CATEGORY = "ExtraModels/PixArt"
|
|
TITLE = "PixArt DPM Sampler [Reference]"
|
|
|
|
def sample(self, model, seed, steps, cfg, noise_schedule, noise_schedule_vp, positive, negative, latent_image):
|
|
samples = sample_pixart(
|
|
model = model,
|
|
seed = seed,
|
|
steps = steps,
|
|
cfg = cfg,
|
|
positive = positive,
|
|
negative = negative,
|
|
latent_image = latent_image["samples"],
|
|
noise_schedule = noise_schedule,
|
|
noise_schedule_vp = noise_schedule_vp,
|
|
)
|
|
return ({"samples":samples},)
|
|
|
|
class PixArtT5TextEncode:
|
|
"""
|
|
Reference code, mostly to verify compatibility.
|
|
Once everything works, this should instead inherit from the
|
|
T5 text encode node and simply add the extra conds (res/ar).
|
|
"""
|
|
@classmethod
|
|
def INPUT_TYPES(s):
|
|
return {
|
|
"required": {
|
|
"text": ("STRING", {"multiline": True}),
|
|
"T5": ("T5",),
|
|
}
|
|
}
|
|
|
|
RETURN_TYPES = ("CONDITIONING",)
|
|
FUNCTION = "encode"
|
|
CATEGORY = "ExtraModels/PixArt"
|
|
TITLE = "PixArt T5 Text Encode [Reference]"
|
|
|
|
def mask_feature(self, emb, mask):
|
|
if emb.shape[0] == 1:
|
|
keep_index = mask.sum().item()
|
|
return emb[:, :, :keep_index, :], keep_index
|
|
else:
|
|
masked_feature = emb * mask[:, None, :, None]
|
|
return masked_feature, emb.shape[2]
|
|
|
|
def encode(self, text, T5):
|
|
text = text.lower().strip()
|
|
tokenizer_out = T5.tokenizer.tokenizer(
|
|
text,
|
|
max_length = 120,
|
|
padding = 'max_length',
|
|
truncation = True,
|
|
return_attention_mask = True,
|
|
add_special_tokens = True,
|
|
return_tensors = 'pt'
|
|
)
|
|
tokens = tokenizer_out["input_ids"]
|
|
mask = tokenizer_out["attention_mask"]
|
|
embs = T5.cond_stage_model.transformer(
|
|
input_ids = tokens.to(T5.load_device),
|
|
attention_mask = mask.to(T5.load_device),
|
|
)['last_hidden_state'].float()[:, None]
|
|
masked_embs, keep_index = self.mask_feature(
|
|
embs.detach().to("cpu"),
|
|
mask.detach().to("cpu")
|
|
)
|
|
masked_embs = masked_embs.squeeze(0) # match CLIP/internal
|
|
print("Encoded T5:", masked_embs.shape)
|
|
return ([[masked_embs, {}]], )
|
|
|
|
NODE_CLASS_MAPPINGS = {
|
|
"PixArtCheckpointLoader" : PixArtCheckpointLoader,
|
|
"PixArtResolutionSelect" : PixArtResolutionSelect,
|
|
"PixArtDPMSampler" : PixArtDPMSampler,
|
|
"PixArtT5TextEncode" : PixArtT5TextEncode,
|
|
}
|