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sd-webui-semantic-guidance-sdxl-hybrid/README.md ADDED
@@ -0,0 +1,53 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ ## sd-webui-semantic-guidance
2
+ ### An unofficial implementation of *SEGA: Instructing Text-to-Image Models using Semantic Guidance* for Automatic1111 WebUI
3
+ Semantic Guidance gives you more control over the fine details of an image by emphasizing or de-emphasizing concepts given in an additional positive / negative text prompt.
4
+
5
+ ### Use Cases
6
+ - Altering the style of an image without changing the composition
7
+ ![image](samples/style_change.jpg)
8
+
9
+ - Adding concepts to an image
10
+ ![image](samples/concepts_1.jpg)
11
+
12
+ Please see the bottom of the page for more examples.
13
+
14
+ ### Issues / PR's are welcome!
15
+
16
+ ### Settings
17
+
18
+ * Positive / Negative Prompt: Concepts to emphasize / de-emphasize, separated by commas
19
+ * Warmup Steps: How many steps to wait before applying semantic guidance
20
+ * Edit Guidance Scale: Globally scale how much influence semantic guidance has on the image
21
+ * Tail Percentage Threshold: The percentage of latents to use when calculating the semantic guidance
22
+ * Momentum Scale: Scale the influence of the added momentum term
23
+ * Momentum Beta: Higher values will make the influence of the momentum term more stable
24
+
25
+ ### Feature / To-do List
26
+ - [x] SD XL support
27
+ - [x] Support A1111 prompt attention syntax and shortcuts for attention strength
28
+ - [x] Support restoring parameter values from infotext (Send to Txt2Img, Send to Img2Img, etc.)
29
+ - [x] XYZ plot support
30
+ - [x] SD 1.5 support (untested)
31
+ - [ ] Support semantic guidance prompt in regular Positive/Negative Prompt fields
32
+
33
+ ### Credits
34
+ - The authors of the original paper for their method (https://arxiv.org/abs/2301.12247):
35
+ ```
36
+ @misc{brack2023sega,
37
+ title={SEGA: Instructing Text-to-Image Models using Semantic Guidance},
38
+ author={Manuel Brack and Felix Friedrich and Dominik Hintersdorf and Lukas Struppek and Patrick Schramowski and Kristian Kersting},
39
+ year={2023},
40
+ eprint={2301.12247},
41
+ archivePrefix={arXiv},
42
+ primaryClass={cs.CV}
43
+ }
44
+ ```
45
+ - Official implementation of Semantic Guidance for Diffusion: (https://github.com/ml-research/semantic-image-editing)
46
+
47
+ - @udon-universe's extension templates: (https://github.com/udon-universe/stable-diffusion-webui-extension-templates)
48
+
49
+ ### More examples
50
+ - Enhancing the details of an image
51
+ ![image](samples/enhance.jpg)
52
+
53
+
sd-webui-semantic-guidance-sdxl-hybrid/samples/comparison.png ADDED

Git LFS Details

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  • Pointer size: 132 Bytes
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sd-webui-semantic-guidance-sdxl-hybrid/samples/concepts_1.jpg ADDED

Git LFS Details

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  • Pointer size: 131 Bytes
  • Size of remote file: 436 kB
sd-webui-semantic-guidance-sdxl-hybrid/samples/enhance.jpg ADDED

Git LFS Details

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  • Pointer size: 132 Bytes
  • Size of remote file: 1.1 MB
sd-webui-semantic-guidance-sdxl-hybrid/samples/style_change.jpg ADDED

Git LFS Details

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  • Pointer size: 131 Bytes
  • Size of remote file: 572 kB
sd-webui-semantic-guidance-sdxl-hybrid/scripts/sega.py ADDED
@@ -0,0 +1,1030 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ import logging
2
+ import math
3
+ from os import environ
4
+
5
+ import gradio as gr
6
+ import scipy.stats as stats
7
+ import torch
8
+ import torch.nn.functional as F
9
+
10
+ import modules.scripts as scripts
11
+ from modules import prompt_parser, script_callbacks, shared
12
+ from modules.processing import StableDiffusionProcessing
13
+ from modules.prompt_parser import reconstruct_multicond_batch
14
+ from modules.script_callbacks import CFGDenoiserParams
15
+ from modules.sd_samplers_cfg_denoiser import pad_cond
16
+
17
+ logger = logging.getLogger(__name__)
18
+ logger.setLevel(environ.get("SD_WEBUI_LOG_LEVEL", logging.INFO))
19
+
20
+ """
21
+ An unofficial implementation of SEGA: Instructing Text-to-Image Models using Semantic Guidance for Automatic1111 WebUI.
22
+
23
+ This patched variant focuses on robust SDXL support and safer hybrid steering improvements:
24
+ - handles tensor and dict conditioning safely (SD 1.5 / SDXL)
25
+ - lets you steer cross-attention and pooled vector conditioning separately on SDXL
26
+ - applies SDXL vector edits with a safer warmup-aware schedule
27
+ - optionally adds T2I-Zero-inspired similarity correction and CTNMS-inspired token suppression in embedding space
28
+ - splits concept prompts on top-level commas only
29
+ """
30
+
31
+
32
+ class SegaStateParams:
33
+ def __init__(self):
34
+ self.concept_name = ""
35
+ self.v = {} # velocity
36
+ self.warmup_period: int = 10
37
+ self.guidance_end_step: int = 0
38
+ self.edit_guidance_scale: float = 1.0
39
+ self.tail_percentage_threshold: float = 0.05
40
+ self.momentum_scale: float = 0.3
41
+ self.momentum_beta: float = 0.6
42
+ self.strength: float = 1.0
43
+ self.conditioning_mode: str = "Auto"
44
+ self.crossattn_scale: float = 1.0
45
+ self.vector_scale: float = 0.25
46
+ self.vector_schedule: str = "After warmup (soft)"
47
+ self.vector_ramp_steps: int = 8
48
+ self.similarity_correction_enabled: bool = False
49
+ self.similarity_topk_frac: float = 0.15
50
+ self.similarity_percentile: float = 0.75
51
+ self.similarity_window: int = 2
52
+ self.similarity_alpha: float = 0.20
53
+ self.embedding_suppression_enabled: bool = False
54
+ self.embedding_suppression_percentile: float = 0.80
55
+ self.embedding_suppression_alpha: float = 0.15
56
+ self.main_negative_is_empty: bool = False
57
+ self.is_negative_concept: bool = False
58
+
59
+
60
+ class SegaExtensionScript(scripts.Script):
61
+ def __init__(self):
62
+ self.cached_c = [None, None]
63
+
64
+ def title(self):
65
+ return "Semantic Guidance"
66
+
67
+ def show(self, is_img2img):
68
+ return scripts.AlwaysVisible
69
+
70
+ def ui(self, is_img2img):
71
+ with gr.Accordion("Semantic Guidance", open=False):
72
+ active = gr.Checkbox(value=False, default=False, label="Active", elem_id="sega_active")
73
+ with gr.Row():
74
+ prompt = gr.Textbox(lines=2, label="Prompt", elem_id="sega_prompt", elem_classes=["prompt"])
75
+ with gr.Row():
76
+ neg_prompt = gr.Textbox(lines=2, label="Negative Prompt", elem_id="sega_neg_prompt", elem_classes=["prompt"])
77
+ with gr.Row():
78
+ warmup = gr.Slider(
79
+ value=10,
80
+ minimum=0,
81
+ maximum=30,
82
+ step=1,
83
+ label="Warmup Period",
84
+ elem_id="sega_warmup",
85
+ info="How many steps to wait before applying semantic guidance.",
86
+ )
87
+ guidance_end_step = gr.Slider(
88
+ value=0,
89
+ minimum=0,
90
+ maximum=150,
91
+ step=1,
92
+ label="Guidance End Step",
93
+ elem_id="sega_guidance_end_step",
94
+ info="0 = keep guidance active until the final step. Use this to limit steering to a step range.",
95
+ )
96
+ edit_guidance_scale = gr.Slider(
97
+ value=1.0,
98
+ minimum=0.0,
99
+ maximum=20.0,
100
+ step=0.01,
101
+ label="Edit Guidance Scale",
102
+ elem_id="sega_edit_guidance_scale",
103
+ info="Global scale of semantic guidance.",
104
+ )
105
+ tail_percentage_threshold = gr.Slider(
106
+ value=0.05,
107
+ minimum=0.0,
108
+ maximum=1.0,
109
+ step=0.01,
110
+ label="Tail Percentage Threshold",
111
+ elem_id="sega_tail_percentage_threshold",
112
+ info="Only edit values in the strongest tail of the semantic direction.",
113
+ )
114
+ momentum_scale = gr.Slider(
115
+ value=0.3,
116
+ minimum=0.0,
117
+ maximum=1.0,
118
+ step=0.01,
119
+ label="Momentum Scale",
120
+ elem_id="sega_momentum_scale",
121
+ info="Adds momentum to the semantic direction.",
122
+ )
123
+ momentum_beta = gr.Slider(
124
+ value=0.6,
125
+ minimum=0.0,
126
+ maximum=0.999,
127
+ step=0.01,
128
+ label="Momentum Beta",
129
+ elem_id="sega_momentum_beta",
130
+ info="Higher values make momentum more stable.",
131
+ )
132
+ with gr.Row():
133
+ conditioning_mode = gr.Dropdown(
134
+ choices=["Auto", "CrossAttn only", "CrossAttn + Vector"],
135
+ value="Auto",
136
+ label="SDXL Conditioning Mode",
137
+ elem_id="sega_conditioning_mode",
138
+ info="Auto = SD 1.5 uses cross-attention only; SDXL edits cross-attention and optionally pooled vector.",
139
+ )
140
+ crossattn_scale = gr.Slider(
141
+ value=1.0,
142
+ minimum=0.0,
143
+ maximum=2.0,
144
+ step=0.01,
145
+ label="CrossAttn Scale",
146
+ elem_id="sega_crossattn_scale",
147
+ info="Relative scale for token/cross-attention conditioning.",
148
+ )
149
+ vector_scale = gr.Slider(
150
+ value=0.25,
151
+ minimum=0.0,
152
+ maximum=2.0,
153
+ step=0.01,
154
+ label="Vector Scale",
155
+ elem_id="sega_vector_scale",
156
+ info="Relative scale for SDXL pooled vector conditioning. Lower is usually safer.",
157
+ )
158
+ with gr.Row():
159
+ vector_schedule = gr.Dropdown(
160
+ choices=["After warmup (soft)", "After warmup (step)", "Always on"],
161
+ value="After warmup (soft)",
162
+ label="Vector Schedule",
163
+ elem_id="sega_vector_schedule",
164
+ info="Safer SDXL vector steering: keep pooled vector off until warmup ends, then enable it softly or in one step.",
165
+ )
166
+ vector_ramp_steps = gr.Slider(
167
+ value=8,
168
+ minimum=0,
169
+ maximum=30,
170
+ step=1,
171
+ label="Vector Ramp Steps",
172
+ elem_id="sega_vector_ramp_steps",
173
+ info="Used by the soft vector schedule. 0 behaves like a step switch.",
174
+ )
175
+ with gr.Accordion("Hybrid Embedding Edits (experimental)", open=False):
176
+ with gr.Row():
177
+ similarity_correction_enabled = gr.Checkbox(
178
+ value=False,
179
+ label="Enable Similarity Correction",
180
+ elem_id="sega_similarity_correction_enabled",
181
+ info="T2I-Zero-inspired correction applied only to cross-attention embeddings before SEGA.",
182
+ )
183
+ embedding_suppression_enabled = gr.Checkbox(
184
+ value=False,
185
+ label="Enable Token Competition Suppression",
186
+ elem_id="sega_embedding_suppression_enabled",
187
+ info="CTNMS-inspired embedding-space suppression. Safer than attention hooks, but still experimental.",
188
+ )
189
+ with gr.Row():
190
+ similarity_topk_frac = gr.Slider(
191
+ value=0.15,
192
+ minimum=0.01,
193
+ maximum=0.50,
194
+ step=0.01,
195
+ label="Selected Token Fraction",
196
+ elem_id="sega_similarity_topk_frac",
197
+ info="Fraction of the most concept-salient tokens to target for hybrid edits.",
198
+ )
199
+ similarity_percentile = gr.Slider(
200
+ value=0.75,
201
+ minimum=0.10,
202
+ maximum=0.99,
203
+ step=0.01,
204
+ label="Similarity Percentile",
205
+ elem_id="sega_similarity_percentile",
206
+ info="Higher values make similarity correction more selective.",
207
+ )
208
+ similarity_window = gr.Slider(
209
+ value=2,
210
+ minimum=0,
211
+ maximum=12,
212
+ step=1,
213
+ label="Similarity Window",
214
+ elem_id="sega_similarity_window",
215
+ info="Local token window around each selected token for similarity correction.",
216
+ )
217
+ similarity_alpha = gr.Slider(
218
+ value=0.20,
219
+ minimum=0.0,
220
+ maximum=1.0,
221
+ step=0.01,
222
+ label="Similarity Alpha",
223
+ elem_id="sega_similarity_alpha",
224
+ info="Blend strength for similarity correction.",
225
+ )
226
+ with gr.Row():
227
+ embedding_suppression_percentile = gr.Slider(
228
+ value=0.80,
229
+ minimum=0.10,
230
+ maximum=0.99,
231
+ step=0.01,
232
+ label="Suppression Percentile",
233
+ elem_id="sega_embedding_suppression_percentile",
234
+ info="Only suppress strongly competing non-selected tokens above this percentile.",
235
+ )
236
+ embedding_suppression_alpha = gr.Slider(
237
+ value=0.15,
238
+ minimum=0.0,
239
+ maximum=1.0,
240
+ step=0.01,
241
+ label="Suppression Alpha",
242
+ elem_id="sega_embedding_suppression_alpha",
243
+ info="Strength of embedding-space token competition suppression.",
244
+ )
245
+
246
+ for comp in [
247
+ active,
248
+ prompt,
249
+ neg_prompt,
250
+ warmup,
251
+ guidance_end_step,
252
+ edit_guidance_scale,
253
+ tail_percentage_threshold,
254
+ momentum_scale,
255
+ momentum_beta,
256
+ conditioning_mode,
257
+ crossattn_scale,
258
+ vector_scale,
259
+ vector_schedule,
260
+ vector_ramp_steps,
261
+ similarity_correction_enabled,
262
+ similarity_topk_frac,
263
+ similarity_percentile,
264
+ similarity_window,
265
+ similarity_alpha,
266
+ embedding_suppression_enabled,
267
+ embedding_suppression_percentile,
268
+ embedding_suppression_alpha,
269
+ ]:
270
+ comp.do_not_save_to_config = True
271
+
272
+ self.infotext_fields = [
273
+ (active, lambda d: gr.Checkbox.update(value="SEGA Active" in d)),
274
+ (prompt, "SEGA Prompt"),
275
+ (neg_prompt, "SEGA Negative Prompt"),
276
+ (warmup, "SEGA Warmup Period"),
277
+ (guidance_end_step, "SEGA Guidance End Step"),
278
+ (edit_guidance_scale, "SEGA Edit Guidance Scale"),
279
+ (tail_percentage_threshold, "SEGA Tail Percentage Threshold"),
280
+ (momentum_scale, "SEGA Momentum Scale"),
281
+ (momentum_beta, "SEGA Momentum Beta"),
282
+ (conditioning_mode, "SEGA SDXL Conditioning Mode"),
283
+ (crossattn_scale, "SEGA CrossAttn Scale"),
284
+ (vector_scale, "SEGA Vector Scale"),
285
+ (vector_schedule, "SEGA Vector Schedule"),
286
+ (vector_ramp_steps, "SEGA Vector Ramp Steps"),
287
+ (similarity_correction_enabled, lambda d: gr.Checkbox.update(value="SEGA Similarity Correction" in d)),
288
+ (similarity_topk_frac, "SEGA Selected Token Fraction"),
289
+ (similarity_percentile, "SEGA Similarity Percentile"),
290
+ (similarity_window, "SEGA Similarity Window"),
291
+ (similarity_alpha, "SEGA Similarity Alpha"),
292
+ (embedding_suppression_enabled, lambda d: gr.Checkbox.update(value="SEGA Token Competition Suppression" in d)),
293
+ (embedding_suppression_percentile, "SEGA Suppression Percentile"),
294
+ (embedding_suppression_alpha, "SEGA Suppression Alpha"),
295
+ ]
296
+ self.paste_field_names = [
297
+ "sega_active",
298
+ "sega_prompt",
299
+ "sega_neg_prompt",
300
+ "sega_warmup",
301
+ "sega_guidance_end_step",
302
+ "sega_edit_guidance_scale",
303
+ "sega_tail_percentage_threshold",
304
+ "sega_momentum_scale",
305
+ "sega_momentum_beta",
306
+ "sega_conditioning_mode",
307
+ "sega_crossattn_scale",
308
+ "sega_vector_scale",
309
+ "sega_vector_schedule",
310
+ "sega_vector_ramp_steps",
311
+ "sega_similarity_correction_enabled",
312
+ "sega_similarity_topk_frac",
313
+ "sega_similarity_percentile",
314
+ "sega_similarity_window",
315
+ "sega_similarity_alpha",
316
+ "sega_embedding_suppression_enabled",
317
+ "sega_embedding_suppression_percentile",
318
+ "sega_embedding_suppression_alpha",
319
+ ]
320
+ return [
321
+ active,
322
+ prompt,
323
+ neg_prompt,
324
+ warmup,
325
+ guidance_end_step,
326
+ edit_guidance_scale,
327
+ tail_percentage_threshold,
328
+ momentum_scale,
329
+ momentum_beta,
330
+ conditioning_mode,
331
+ crossattn_scale,
332
+ vector_scale,
333
+ vector_schedule,
334
+ vector_ramp_steps,
335
+ similarity_correction_enabled,
336
+ similarity_topk_frac,
337
+ similarity_percentile,
338
+ similarity_window,
339
+ similarity_alpha,
340
+ embedding_suppression_enabled,
341
+ embedding_suppression_percentile,
342
+ embedding_suppression_alpha,
343
+ ]
344
+
345
+ def process_batch(
346
+ self,
347
+ p: StableDiffusionProcessing,
348
+ active,
349
+ prompt,
350
+ neg_prompt,
351
+ warmup,
352
+ guidance_end_step,
353
+ edit_guidance_scale,
354
+ tail_percentage_threshold,
355
+ momentum_scale,
356
+ momentum_beta,
357
+ conditioning_mode,
358
+ crossattn_scale,
359
+ vector_scale,
360
+ vector_schedule,
361
+ vector_ramp_steps,
362
+ similarity_correction_enabled,
363
+ similarity_topk_frac,
364
+ similarity_percentile,
365
+ similarity_window,
366
+ similarity_alpha,
367
+ embedding_suppression_enabled,
368
+ embedding_suppression_percentile,
369
+ embedding_suppression_alpha,
370
+ *args,
371
+ **kwargs,
372
+ ):
373
+ active = getattr(p, "sega_active", active)
374
+ if active is False:
375
+ return
376
+
377
+ prompt = getattr(p, "sega_prompt", prompt)
378
+ neg_prompt = getattr(p, "sega_neg_prompt", neg_prompt)
379
+ warmup = getattr(p, "sega_warmup", warmup)
380
+ guidance_end_step = getattr(p, "sega_guidance_end_step", guidance_end_step)
381
+ edit_guidance_scale = getattr(p, "sega_edit_guidance_scale", edit_guidance_scale)
382
+ tail_percentage_threshold = getattr(p, "sega_tail_percentage_threshold", tail_percentage_threshold)
383
+ momentum_scale = getattr(p, "sega_momentum_scale", momentum_scale)
384
+ momentum_beta = getattr(p, "sega_momentum_beta", momentum_beta)
385
+ conditioning_mode = getattr(p, "sega_conditioning_mode", conditioning_mode)
386
+ crossattn_scale = getattr(p, "sega_crossattn_scale", crossattn_scale)
387
+ vector_scale = getattr(p, "sega_vector_scale", vector_scale)
388
+ vector_schedule = getattr(p, "sega_vector_schedule", vector_schedule)
389
+ vector_ramp_steps = getattr(p, "sega_vector_ramp_steps", vector_ramp_steps)
390
+ similarity_correction_enabled = getattr(p, "sega_similarity_correction_enabled", similarity_correction_enabled)
391
+ similarity_topk_frac = getattr(p, "sega_similarity_topk_frac", similarity_topk_frac)
392
+ similarity_percentile = getattr(p, "sega_similarity_percentile", similarity_percentile)
393
+ similarity_window = getattr(p, "sega_similarity_window", similarity_window)
394
+ similarity_alpha = getattr(p, "sega_similarity_alpha", similarity_alpha)
395
+ embedding_suppression_enabled = getattr(p, "sega_embedding_suppression_enabled", embedding_suppression_enabled)
396
+ embedding_suppression_percentile = getattr(p, "sega_embedding_suppression_percentile", embedding_suppression_percentile)
397
+ embedding_suppression_alpha = getattr(p, "sega_embedding_suppression_alpha", embedding_suppression_alpha)
398
+
399
+ p.extra_generation_params.update(
400
+ {
401
+ "SEGA Active": active,
402
+ "SEGA Prompt": prompt,
403
+ "SEGA Negative Prompt": neg_prompt,
404
+ "SEGA Warmup Period": warmup,
405
+ "SEGA Guidance End Step": guidance_end_step,
406
+ "SEGA Edit Guidance Scale": edit_guidance_scale,
407
+ "SEGA Tail Percentage Threshold": tail_percentage_threshold,
408
+ "SEGA Momentum Scale": momentum_scale,
409
+ "SEGA Momentum Beta": momentum_beta,
410
+ "SEGA SDXL Conditioning Mode": conditioning_mode,
411
+ "SEGA CrossAttn Scale": crossattn_scale,
412
+ "SEGA Vector Scale": vector_scale,
413
+ "SEGA Vector Schedule": vector_schedule,
414
+ "SEGA Vector Ramp Steps": vector_ramp_steps,
415
+ **({"SEGA Similarity Correction": True} if similarity_correction_enabled else {}),
416
+ "SEGA Selected Token Fraction": similarity_topk_frac,
417
+ "SEGA Similarity Percentile": similarity_percentile,
418
+ "SEGA Similarity Window": similarity_window,
419
+ "SEGA Similarity Alpha": similarity_alpha,
420
+ **({"SEGA Token Competition Suppression": True} if embedding_suppression_enabled else {}),
421
+ "SEGA Suppression Percentile": embedding_suppression_percentile,
422
+ "SEGA Suppression Alpha": embedding_suppression_alpha,
423
+ }
424
+ )
425
+
426
+ concept_prompts = self.parse_concept_prompt(prompt)
427
+ concept_prompts_neg = self.parse_concept_prompt(neg_prompt)
428
+ concept_prompts = [prompt_parser.parse_prompt_attention(concept)[0] for concept in concept_prompts]
429
+ concept_prompts_neg = [prompt_parser.parse_prompt_attention(neg_concept)[0] for neg_concept in concept_prompts_neg]
430
+ concept_prompts_neg = [[concept, -strength] for concept, strength in concept_prompts_neg]
431
+ concept_prompts.extend(concept_prompts_neg)
432
+
433
+ if not concept_prompts:
434
+ logger.warning("SEGA: active but no concept prompts were provided; skipping hook creation.")
435
+ return
436
+
437
+ concept_conds = []
438
+ for concept, strength in concept_prompts:
439
+ prompt_list = [concept] * p.batch_size
440
+ prompts = prompt_parser.SdConditioning(prompt_list, width=p.width, height=p.height)
441
+ c = p.get_conds_with_caching(
442
+ prompt_parser.get_multicond_learned_conditioning,
443
+ prompts,
444
+ p.steps,
445
+ [self.cached_c],
446
+ p.extra_network_data,
447
+ )
448
+ concept_conds.append([c, strength])
449
+
450
+ main_negative_is_empty = self.is_effectively_empty_prompt(getattr(p, "all_negative_prompts", getattr(p, "negative_prompt", "")))
451
+
452
+ self.create_hook(
453
+ active,
454
+ concept_conds,
455
+ warmup,
456
+ guidance_end_step,
457
+ edit_guidance_scale,
458
+ tail_percentage_threshold,
459
+ momentum_scale,
460
+ momentum_beta,
461
+ conditioning_mode,
462
+ crossattn_scale,
463
+ vector_scale,
464
+ vector_schedule,
465
+ vector_ramp_steps,
466
+ similarity_correction_enabled,
467
+ similarity_topk_frac,
468
+ similarity_percentile,
469
+ similarity_window,
470
+ similarity_alpha,
471
+ embedding_suppression_enabled,
472
+ embedding_suppression_percentile,
473
+ embedding_suppression_alpha,
474
+ main_negative_is_empty,
475
+ )
476
+
477
+ def parse_concept_prompt(self, prompt: str) -> list[str]:
478
+ """Split on top-level commas only.
479
+
480
+ This keeps prompts like `(red, blue:1.2)` or `[a, b]` intact.
481
+ Backslash-escaped commas are also preserved.
482
+ """
483
+ if not prompt:
484
+ return []
485
+
486
+ parts = []
487
+ cur = []
488
+ depth_round = 0
489
+ depth_square = 0
490
+ depth_curly = 0
491
+ escape = False
492
+
493
+ for ch in prompt:
494
+ if escape:
495
+ cur.append(ch)
496
+ escape = False
497
+ continue
498
+ if ch == "\\":
499
+ cur.append(ch)
500
+ escape = True
501
+ continue
502
+ if ch == "(":
503
+ depth_round += 1
504
+ elif ch == ")" and depth_round > 0:
505
+ depth_round -= 1
506
+ elif ch == "[":
507
+ depth_square += 1
508
+ elif ch == "]" and depth_square > 0:
509
+ depth_square -= 1
510
+ elif ch == "{":
511
+ depth_curly += 1
512
+ elif ch == "}" and depth_curly > 0:
513
+ depth_curly -= 1
514
+
515
+ if ch == "," and depth_round == 0 and depth_square == 0 and depth_curly == 0:
516
+ item = "".join(cur).strip()
517
+ if item:
518
+ parts.append(item)
519
+ cur = []
520
+ continue
521
+
522
+ cur.append(ch)
523
+
524
+ item = "".join(cur).strip()
525
+ if item:
526
+ parts.append(item)
527
+ return parts
528
+
529
+ def create_hook(
530
+ self,
531
+ active,
532
+ concept_conds,
533
+ warmup,
534
+ guidance_end_step,
535
+ edit_guidance_scale,
536
+ tail_percentage_threshold,
537
+ momentum_scale,
538
+ momentum_beta,
539
+ conditioning_mode,
540
+ crossattn_scale,
541
+ vector_scale,
542
+ vector_schedule,
543
+ vector_ramp_steps,
544
+ similarity_correction_enabled,
545
+ similarity_topk_frac,
546
+ similarity_percentile,
547
+ similarity_window,
548
+ similarity_alpha,
549
+ embedding_suppression_enabled,
550
+ embedding_suppression_percentile,
551
+ embedding_suppression_alpha,
552
+ main_negative_is_empty,
553
+ ):
554
+ if not concept_conds:
555
+ return
556
+
557
+ concepts_sega_params = []
558
+ for _, strength in concept_conds:
559
+ sega_params = SegaStateParams()
560
+ sega_params.warmup_period = warmup
561
+ sega_params.guidance_end_step = guidance_end_step
562
+ sega_params.edit_guidance_scale = edit_guidance_scale
563
+ sega_params.tail_percentage_threshold = tail_percentage_threshold
564
+ sega_params.momentum_scale = momentum_scale
565
+ sega_params.momentum_beta = momentum_beta
566
+ sega_params.strength = strength
567
+ sega_params.conditioning_mode = conditioning_mode
568
+ sega_params.crossattn_scale = crossattn_scale
569
+ sega_params.vector_scale = vector_scale
570
+ sega_params.vector_schedule = vector_schedule
571
+ sega_params.vector_ramp_steps = vector_ramp_steps
572
+ sega_params.similarity_correction_enabled = similarity_correction_enabled
573
+ sega_params.similarity_topk_frac = similarity_topk_frac
574
+ sega_params.similarity_percentile = similarity_percentile
575
+ sega_params.similarity_window = similarity_window
576
+ sega_params.similarity_alpha = similarity_alpha
577
+ sega_params.embedding_suppression_enabled = embedding_suppression_enabled
578
+ sega_params.embedding_suppression_percentile = embedding_suppression_percentile
579
+ sega_params.embedding_suppression_alpha = embedding_suppression_alpha
580
+ sega_params.main_negative_is_empty = bool(main_negative_is_empty)
581
+ sega_params.is_negative_concept = bool(strength < 0)
582
+ concepts_sega_params.append(sega_params)
583
+
584
+ callback = lambda params: self.on_cfg_denoiser_callback(params, concept_conds, concepts_sega_params)
585
+ logger.debug("Hooked callbacks")
586
+ script_callbacks.on_cfg_denoiser(callback)
587
+ script_callbacks.on_script_unloaded(self.unhook_callbacks)
588
+
589
+ def postprocess_batch(self, p, active, neg_text, *args, **kwargs):
590
+ active = getattr(p, "sega_active", active)
591
+ if active is False:
592
+ return
593
+ self.unhook_callbacks()
594
+
595
+ def unhook_callbacks(self):
596
+ logger.debug("Unhooked callbacks")
597
+ script_callbacks.remove_current_script_callbacks()
598
+
599
+ def normalize_conditioning(self, cond):
600
+ if isinstance(cond, dict):
601
+ return cond
602
+ return {"crossattn": cond}
603
+
604
+ def get_empty_crossattn(self):
605
+ return getattr(shared.sd_model, "cond_stage_model_empty_prompt", None)
606
+
607
+ def pad_crossattn_to_match(self, tensor: torch.Tensor, reference: torch.Tensor):
608
+ if tensor is None or reference is None:
609
+ return tensor
610
+ if tensor.dim() < 3 or reference.dim() < 3:
611
+ return tensor
612
+ if tensor.shape[1] == reference.shape[1]:
613
+ return tensor
614
+
615
+ empty = self.get_empty_crossattn()
616
+ if empty is None or empty.ndim < 2 or empty.shape[1] == 0:
617
+ logger.warning("SEGA: could not pad cross-attention conditioning safely; empty prompt tensor unavailable.")
618
+ return tensor
619
+
620
+ diff = reference.shape[1] - tensor.shape[1]
621
+ if diff <= 0:
622
+ return tensor
623
+ if diff % empty.shape[1] != 0:
624
+ logger.warning(
625
+ "SEGA: cross-attention length mismatch (%s vs %s) is not divisible by empty prompt width %s; leaving tensor unchanged.",
626
+ tensor.shape[1],
627
+ reference.shape[1],
628
+ empty.shape[1],
629
+ )
630
+ return tensor
631
+ return pad_cond(tensor, diff // empty.shape[1], empty)
632
+
633
+ def pad_conditioning_pair(self, cond_a: dict, cond_b: dict):
634
+ if "crossattn" not in cond_a or "crossattn" not in cond_b:
635
+ return cond_a, cond_b
636
+
637
+ a = cond_a["crossattn"]
638
+ b = cond_b["crossattn"]
639
+ if a.shape[1] == b.shape[1]:
640
+ return cond_a, cond_b
641
+
642
+ if a.shape[1] < b.shape[1]:
643
+ cond_a["crossattn"] = self.pad_crossattn_to_match(a, b)
644
+ else:
645
+ cond_b["crossattn"] = self.pad_crossattn_to_match(b, a)
646
+ return cond_a, cond_b
647
+
648
+
649
+ def is_effectively_empty_prompt(self, prompt_value) -> bool:
650
+ if prompt_value is None:
651
+ return True
652
+ if isinstance(prompt_value, (list, tuple)):
653
+ return all(self.is_effectively_empty_prompt(x) for x in prompt_value)
654
+ return not str(prompt_value).strip()
655
+
656
+ def is_guidance_active(self, sampling_step: int, sega_param: SegaStateParams) -> bool:
657
+ start = max(0, int(getattr(sega_param, "warmup_period", 0)))
658
+ end = int(getattr(sega_param, "guidance_end_step", 0) or 0)
659
+ if sampling_step < start:
660
+ return False
661
+ if end > 0 and sampling_step > end:
662
+ return False
663
+ return True
664
+
665
+ def get_vector_ramp_factor(self, sampling_step: int, sega_param: SegaStateParams) -> float:
666
+ if sega_param.conditioning_mode == "CrossAttn only":
667
+ return 0.0
668
+ schedule = getattr(sega_param, "vector_schedule", "After warmup (soft)")
669
+ if schedule == "Always on":
670
+ return 1.0
671
+
672
+ warmup = max(0, int(sega_param.warmup_period))
673
+ end = int(getattr(sega_param, "guidance_end_step", 0) or 0)
674
+ if sampling_step < warmup:
675
+ return 0.0
676
+ if end > 0 and sampling_step > end:
677
+ return 0.0
678
+
679
+ ramp_steps = max(0, int(getattr(sega_param, "vector_ramp_steps", 8)))
680
+ if schedule == "After warmup (step)" or ramp_steps == 0:
681
+ return 1.0
682
+
683
+ progress = min(1.0, max(0.0, (sampling_step - warmup + 1) / max(1, ramp_steps)))
684
+ return progress * progress * (3.0 - 2.0 * progress)
685
+
686
+ def get_key_scale(self, key: str, sega_param: SegaStateParams, sampling_step: int) -> float:
687
+ if key == "crossattn":
688
+ return sega_param.crossattn_scale
689
+ if key == "vector":
690
+ if sega_param.conditioning_mode == "CrossAttn only":
691
+ return 0.0
692
+ base = sega_param.vector_scale * self.get_vector_ramp_factor(sampling_step, sega_param)
693
+ if getattr(sega_param, "main_negative_is_empty", False):
694
+ base *= 0.5
695
+ return base
696
+ return 1.0 if sega_param.conditioning_mode == "CrossAttn + Vector" else 0.0
697
+
698
+ def get_empty_reference_for(self, tensor: torch.Tensor):
699
+ if tensor is None or tensor.dim() < 3:
700
+ return None
701
+
702
+ empty = self.get_empty_crossattn()
703
+ if empty is None:
704
+ return None
705
+ if empty.dim() == 2:
706
+ empty = empty.unsqueeze(0)
707
+
708
+ empty = empty.to(dtype=tensor.dtype, device=tensor.device)
709
+ if empty.shape[0] != tensor.shape[0]:
710
+ if empty.shape[0] == 1:
711
+ empty = empty.repeat(tensor.shape[0], 1, 1)
712
+ else:
713
+ empty = empty[:1].repeat(tensor.shape[0], 1, 1)
714
+
715
+ if empty.shape[1] != tensor.shape[1]:
716
+ empty = self.pad_crossattn_to_match(empty, tensor)
717
+ if empty is None or empty.shape[1] != tensor.shape[1]:
718
+ return None
719
+ return empty
720
+
721
+ def select_salient_token_indices(self, f: torch.Tensor, reference: torch.Tensor | None, topk_frac: float, max_tokens: int = 8) -> list[int]:
722
+ if f.ndim != 2 or f.shape[0] == 0:
723
+ return []
724
+
725
+ if reference is not None and reference.shape == f.shape:
726
+ scores = torch.linalg.norm((f - reference).float(), dim=-1)
727
+ else:
728
+ scores = torch.linalg.norm(f.float(), dim=-1)
729
+
730
+ k = max(1, int(math.ceil(float(f.shape[0]) * max(0.01, topk_frac))))
731
+ k = min(int(f.shape[0]), max_tokens, k)
732
+ vals, idx = torch.topk(scores, k=k)
733
+ idx = idx[torch.isfinite(vals)]
734
+ if idx.numel() == 0:
735
+ return []
736
+ return idx.sort().values.tolist()
737
+
738
+ def correction_by_similarities(self, f: torch.Tensor, selected_tokens: list[int], percentile: float, window: int, alpha: float) -> torch.Tensor:
739
+ if alpha <= 0.0 or not selected_tokens or f.ndim != 2:
740
+ return f
741
+
742
+ corrected = f.detach().clone()
743
+ normed = F.normalize(f.float(), dim=-1, eps=1e-8)
744
+ n = f.shape[0]
745
+ percentile = min(0.999, max(0.001, float(percentile)))
746
+ window = max(0, int(window))
747
+
748
+ for token_idx in selected_tokens:
749
+ if token_idx < 0 or token_idx >= n:
750
+ continue
751
+ scores = torch.mv(normed, normed[token_idx])
752
+ positive = scores[scores > 0]
753
+ if positive.numel() == 0:
754
+ continue
755
+ tau = torch.quantile(positive.float(), percentile).to(dtype=scores.dtype, device=scores.device)
756
+ weights = torch.where(scores > tau, scores, torch.zeros_like(scores))
757
+ if window > 0:
758
+ mask = torch.zeros_like(weights)
759
+ start = max(0, token_idx - window)
760
+ end = min(n, token_idx + window + 1)
761
+ mask[start:end] = 1
762
+ weights = weights * mask
763
+ total = weights.sum()
764
+ if total <= 0:
765
+ continue
766
+ weights = (weights / total).to(dtype=f.dtype, device=f.device)
767
+ mixed = torch.sum(weights.unsqueeze(1) * f, dim=0)
768
+ corrected[token_idx] = ((1.0 - alpha) * f[token_idx]) + (alpha * mixed)
769
+ return corrected
770
+
771
+ def suppress_competing_tokens(self, f: torch.Tensor, selected_tokens: list[int], percentile: float, alpha: float) -> torch.Tensor:
772
+ if alpha <= 0.0 or not selected_tokens or f.ndim != 2:
773
+ return f
774
+
775
+ corrected = f.detach().clone()
776
+ normed = F.normalize(corrected.float(), dim=-1, eps=1e-8)
777
+ selected = normed[selected_tokens]
778
+ similarities = torch.matmul(normed, selected.transpose(0, 1))
779
+ max_sim, _ = similarities.max(dim=1)
780
+
781
+ suppression_scores = max_sim.clone()
782
+ suppression_scores[selected_tokens] = -1.0
783
+ positive = suppression_scores[suppression_scores > 0]
784
+ if positive.numel() == 0:
785
+ return corrected
786
+
787
+ percentile = min(0.999, max(0.001, float(percentile)))
788
+ tau = torch.quantile(positive.float(), percentile).to(dtype=max_sim.dtype, device=max_sim.device)
789
+ mask = max_sim > tau
790
+ if selected_tokens:
791
+ mask[torch.tensor(selected_tokens, device=mask.device)] = False
792
+ if not torch.any(mask):
793
+ return corrected
794
+
795
+ denom = max(1e-6, float(1.0 - tau))
796
+ damp = 1.0 - (alpha * ((max_sim - tau).clamp(min=0.0) / denom).clamp(max=1.0))
797
+ corrected[mask] = corrected[mask] * damp[mask].unsqueeze(1).to(dtype=corrected.dtype)
798
+ return corrected
799
+
800
+ def apply_hybrid_crossattn_edits(self, tensor: torch.Tensor, sega_param: SegaStateParams) -> torch.Tensor:
801
+ if tensor is None or tensor.dim() != 3:
802
+ return tensor
803
+ if not getattr(sega_param, "similarity_correction_enabled", False) and not getattr(sega_param, "embedding_suppression_enabled", False):
804
+ return tensor
805
+
806
+ reference = self.get_empty_reference_for(tensor)
807
+ edited = tensor.detach().clone()
808
+ for batch_idx in range(tensor.shape[0]):
809
+ ref = None if reference is None else reference[batch_idx]
810
+ selected_tokens = self.select_salient_token_indices(
811
+ edited[batch_idx],
812
+ ref,
813
+ getattr(sega_param, "similarity_topk_frac", 0.15),
814
+ )
815
+ if getattr(sega_param, "similarity_correction_enabled", False):
816
+ edited[batch_idx] = self.correction_by_similarities(
817
+ edited[batch_idx],
818
+ selected_tokens,
819
+ getattr(sega_param, "similarity_percentile", 0.75),
820
+ getattr(sega_param, "similarity_window", 2),
821
+ getattr(sega_param, "similarity_alpha", 0.20),
822
+ )
823
+ if getattr(sega_param, "embedding_suppression_enabled", False):
824
+ edited[batch_idx] = self.suppress_competing_tokens(
825
+ edited[batch_idx],
826
+ selected_tokens,
827
+ getattr(sega_param, "embedding_suppression_percentile", 0.80),
828
+ getattr(sega_param, "embedding_suppression_alpha", 0.15),
829
+ )
830
+ return edited
831
+
832
+ def on_cfg_denoiser_callback(self, params: CFGDenoiserParams, concept_conds, sega_params: list[SegaStateParams]):
833
+ if not concept_conds or not sega_params:
834
+ return
835
+
836
+ sampling_step = params.sampling_step
837
+ text_cond_is_dict = isinstance(params.text_cond, dict)
838
+ text_uncond_is_dict = isinstance(params.text_uncond, dict)
839
+ text_cond = self.normalize_conditioning(params.text_cond)
840
+ text_uncond = self.normalize_conditioning(params.text_uncond)
841
+ text_cond, text_uncond = self.pad_conditioning_pair(text_cond, text_uncond)
842
+ if not text_cond_is_dict:
843
+ params.text_cond = text_cond["crossattn"]
844
+ if not text_uncond_is_dict:
845
+ params.text_uncond = text_uncond["crossattn"]
846
+
847
+ batch_conds_list = []
848
+ batch_tensor = {}
849
+
850
+ for idx, (concept_cond, _) in enumerate(concept_conds):
851
+ conds_list, tensor_dict = reconstruct_multicond_batch(concept_cond, sampling_step)
852
+ tensor_dict = self.normalize_conditioning(tensor_dict)
853
+ tensor_dict, _ = self.pad_conditioning_pair(tensor_dict, text_uncond)
854
+ if "crossattn" in tensor_dict:
855
+ tensor_dict["crossattn"] = self.apply_hybrid_crossattn_edits(tensor_dict["crossattn"], sega_params[idx])
856
+
857
+ for key, tensor in tensor_dict.items():
858
+ tensor = tensor.unsqueeze(0)
859
+ if key not in batch_tensor:
860
+ batch_tensor[key] = tensor
861
+ else:
862
+ batch_tensor[key] = torch.cat((batch_tensor[key], tensor), dim=0)
863
+ batch_conds_list.append(conds_list)
864
+
865
+ self.sega_routine_batch(params, batch_conds_list, batch_tensor, sega_params, text_cond, text_uncond)
866
+
867
+ def make_tuple_dim(self, value):
868
+ if isinstance(value, torch.Tensor):
869
+ value = value.dim()
870
+ return (-1,) + (1,) * (value - 1)
871
+
872
+ def sega_routine_batch(
873
+ self,
874
+ params: CFGDenoiserParams,
875
+ batch_conds_list,
876
+ batch_tensor,
877
+ sega_params: list[SegaStateParams],
878
+ text_cond,
879
+ text_uncond,
880
+ ):
881
+ warmup_period = sega_params[0].warmup_period
882
+ guidance_end_step = getattr(sega_params[0], "guidance_end_step", 0)
883
+ edit_guidance_scale = sega_params[0].edit_guidance_scale
884
+ tail_percentage_threshold = sega_params[0].tail_percentage_threshold
885
+ momentum_scale = sega_params[0].momentum_scale
886
+ momentum_beta = sega_params[0].momentum_beta
887
+ sampling_step = params.sampling_step
888
+ guidance_active = self.is_guidance_active(sampling_step, sega_params[0])
889
+
890
+ edit_dir_dict = {}
891
+
892
+ for key, concept_cond in batch_tensor.items():
893
+ per_concept_key_scales = []
894
+ base_references = []
895
+ for sp in sega_params:
896
+ key_scale = self.get_key_scale(key, sp, sampling_step)
897
+ if getattr(sp, "is_negative_concept", False):
898
+ if key == "vector":
899
+ key_scale *= 0.35
900
+ elif key == "crossattn":
901
+ key_scale *= 0.70
902
+ else:
903
+ key_scale *= 0.70
904
+ base_ref = text_cond.get(key, text_uncond.get(key, concept_cond[0]))
905
+ elif getattr(sp, "main_negative_is_empty", False) and key in text_cond:
906
+ base_ref = text_cond[key]
907
+ else:
908
+ base_ref = text_uncond.get(key, text_cond.get(key, concept_cond[0]))
909
+ per_concept_key_scales.append(key_scale)
910
+ base_references.append(base_ref)
911
+
912
+ if all(float(scale) == 0.0 for scale in per_concept_key_scales):
913
+ continue
914
+
915
+ strength = torch.tensor([sp.strength for sp in sega_params], dtype=concept_cond.dtype, device=concept_cond.device)
916
+ strength = strength.view(self.make_tuple_dim(concept_cond))
917
+ key_scale = torch.tensor(per_concept_key_scales, dtype=concept_cond.dtype, device=concept_cond.device)
918
+ key_scale = key_scale.view(self.make_tuple_dim(concept_cond))
919
+ base_reference = torch.stack(base_references, dim=0).to(dtype=concept_cond.dtype, device=concept_cond.device)
920
+
921
+ if key not in edit_dir_dict:
922
+ edit_dir_dict[key] = torch.zeros_like(concept_cond, dtype=concept_cond.dtype, device=concept_cond.device)
923
+
924
+ inside_dim = tuple(range(-concept_cond.dim() + 1, 0))
925
+ cond_mean = torch.mean(concept_cond, dim=inside_dim)
926
+ cond_std = torch.std(concept_cond, dim=inside_dim)
927
+
928
+ edit_dir = concept_cond - base_reference
929
+ edit_dir = torch.mul(strength, edit_dir)
930
+
931
+ tail_q = min(max(1e-6, 1.0 - float(tail_percentage_threshold)), 1.0 - 1e-6)
932
+ upper_z = stats.norm.ppf(tail_q)
933
+ upper_threshold = cond_mean + (upper_z * cond_std)
934
+ upper_threshold_reshaped = upper_threshold.view(self.make_tuple_dim(concept_cond))
935
+
936
+ zero_tensor = torch.zeros_like(concept_cond, dtype=concept_cond.dtype, device=concept_cond.device)
937
+ effective_scale = edit_guidance_scale * key_scale
938
+ scale_tensor = torch.ones_like(concept_cond, dtype=concept_cond.dtype, device=concept_cond.device) * effective_scale
939
+ edit_dir_abs = edit_dir.abs()
940
+ scale_tensor = torch.where(edit_dir_abs > upper_threshold_reshaped, scale_tensor, zero_tensor)
941
+
942
+ guidance_strength = 1.0 if guidance_active else 0.0
943
+ edit_dir = torch.mul(scale_tensor, edit_dir)
944
+ edit_dir_dict[key] = edit_dir_dict[key] + guidance_strength * edit_dir
945
+
946
+ for i, sega_param in enumerate(sega_params):
947
+ for key, direction in edit_dir_dict.items():
948
+ if key not in sega_param.v:
949
+ slice_idx = 1 - direction.dim()
950
+ sega_param.v[key] = torch.zeros(direction.shape[slice_idx:], dtype=direction.dtype, device=direction.device)
951
+
952
+ v_t = sega_param.v[key]
953
+ direction[i] = direction[i] + torch.mul(momentum_scale, v_t)
954
+ v_t_1 = momentum_beta * ((1 - momentum_beta) * v_t) * direction[i]
955
+
956
+ if guidance_active:
957
+ if isinstance(params.text_cond, dict):
958
+ if key in params.text_cond:
959
+ params.text_cond[key] = params.text_cond[key] + direction[i]
960
+ else:
961
+ if key == "crossattn":
962
+ params.text_cond = params.text_cond + direction[i]
963
+
964
+ sega_param.v[key] = v_t_1
965
+
966
+
967
+ # XYZ Plot
968
+ # Based on @mcmonkey4eva's XYZ Plot implementation here:
969
+ # https://github.com/mcmonkeyprojects/sd-dynamic-thresholding/blob/master/scripts/dynamic_thresholding.py
970
+
971
+ def sega_apply_override(field, boolean: bool = False, activate: bool = False):
972
+ def fun(p, x, xs):
973
+ if boolean:
974
+ x = True if x.lower() == "true" else False
975
+ if activate and not hasattr(p, "sega_active"):
976
+ setattr(p, "sega_active", True)
977
+ setattr(p, field, x)
978
+ return fun
979
+
980
+
981
+
982
+ def sega_apply_field(field):
983
+ def fun(p, x, xs):
984
+ if not hasattr(p, "sega_active"):
985
+ setattr(p, "sega_active", True)
986
+ setattr(p, field, x)
987
+
988
+ return fun
989
+
990
+
991
+
992
+ def make_axis_options():
993
+ xyz_grid = [x for x in scripts.scripts_data if x.script_class.__module__ in ("xyz_grid.py", "scripts.xyz_grid")][0].module
994
+ extra_axis_options = {
995
+ xyz_grid.AxisOption("[Semantic Guidance] Active", str, sega_apply_override("sega_active", boolean=True), choices=xyz_grid.boolean_choice(reverse=True)),
996
+ xyz_grid.AxisOption("[Semantic Guidance] Prompt", str, sega_apply_field("sega_prompt")),
997
+ xyz_grid.AxisOption("[Semantic Guidance] Negative Prompt", str, sega_apply_field("sega_neg_prompt")),
998
+ xyz_grid.AxisOption("[Semantic Guidance] Warmup Steps", int, sega_apply_field("sega_warmup")),
999
+ xyz_grid.AxisOption("[Semantic Guidance] Guidance End Step", int, sega_apply_field("sega_guidance_end_step")),
1000
+ xyz_grid.AxisOption("[Semantic Guidance] Guidance Scale", float, sega_apply_field("sega_edit_guidance_scale")),
1001
+ xyz_grid.AxisOption("[Semantic Guidance] Tail Percentage Threshold", float, sega_apply_field("sega_tail_percentage_threshold")),
1002
+ xyz_grid.AxisOption("[Semantic Guidance] Momentum Scale", float, sega_apply_field("sega_momentum_scale")),
1003
+ xyz_grid.AxisOption("[Semantic Guidance] Momentum Beta", float, sega_apply_field("sega_momentum_beta")),
1004
+ xyz_grid.AxisOption("[Semantic Guidance] SDXL Conditioning Mode", str, sega_apply_field("sega_conditioning_mode")),
1005
+ xyz_grid.AxisOption("[Semantic Guidance] CrossAttn Scale", float, sega_apply_field("sega_crossattn_scale")),
1006
+ xyz_grid.AxisOption("[Semantic Guidance] Vector Scale", float, sega_apply_field("sega_vector_scale")),
1007
+ xyz_grid.AxisOption("[Semantic Guidance] Vector Schedule", str, sega_apply_field("sega_vector_schedule")),
1008
+ xyz_grid.AxisOption("[Semantic Guidance] Vector Ramp Steps", int, sega_apply_field("sega_vector_ramp_steps")),
1009
+ xyz_grid.AxisOption("[Semantic Guidance] Similarity Correction", str, sega_apply_override("sega_similarity_correction_enabled", boolean=True, activate=True), choices=xyz_grid.boolean_choice(reverse=True)),
1010
+ xyz_grid.AxisOption("[Semantic Guidance] Selected Token Fraction", float, sega_apply_field("sega_similarity_topk_frac")),
1011
+ xyz_grid.AxisOption("[Semantic Guidance] Similarity Percentile", float, sega_apply_field("sega_similarity_percentile")),
1012
+ xyz_grid.AxisOption("[Semantic Guidance] Similarity Window", int, sega_apply_field("sega_similarity_window")),
1013
+ xyz_grid.AxisOption("[Semantic Guidance] Similarity Alpha", float, sega_apply_field("sega_similarity_alpha")),
1014
+ xyz_grid.AxisOption("[Semantic Guidance] Token Competition Suppression", str, sega_apply_override("sega_embedding_suppression_enabled", boolean=True, activate=True), choices=xyz_grid.boolean_choice(reverse=True)),
1015
+ xyz_grid.AxisOption("[Semantic Guidance] Suppression Percentile", float, sega_apply_field("sega_embedding_suppression_percentile")),
1016
+ xyz_grid.AxisOption("[Semantic Guidance] Suppression Alpha", float, sega_apply_field("sega_embedding_suppression_alpha")),
1017
+ }
1018
+ if not any("[Semantic Guidance]" in x.label for x in xyz_grid.axis_options):
1019
+ xyz_grid.axis_options.extend(extra_axis_options)
1020
+
1021
+
1022
+
1023
+ def callback_before_ui():
1024
+ try:
1025
+ make_axis_options()
1026
+ except Exception:
1027
+ logger.exception("Semantic Guidance: Error while making axis options")
1028
+
1029
+
1030
+ script_callbacks.on_before_ui(callback_before_ui)