diff options
Diffstat (limited to 'modules/processing.py')
| -rw-r--r-- | modules/processing.py | 93 |
1 files changed, 76 insertions, 17 deletions
diff --git a/modules/processing.py b/modules/processing.py index d4c4cfad..b91ade17 100644 --- a/modules/processing.py +++ b/modules/processing.py @@ -29,7 +29,7 @@ def torch_gc(): class StableDiffusionProcessing:
- def __init__(self, sd_model=None, outpath_samples=None, outpath_grids=None, prompt="", seed=-1, sampler_index=0, batch_size=1, n_iter=1, steps=50, cfg_scale=7.0, width=512, height=512, restore_faces=False, tiling=False, do_not_save_samples=False, do_not_save_grid=False, extra_generation_params=None, overlay_images=None, negative_prompt=None):
+ def __init__(self, sd_model=None, outpath_samples=None, outpath_grids=None, prompt="", seed=-1, subseed=-1, subseed_strength=0, seed_resize_from_h=-1, seed_resize_from_w=-1, sampler_index=0, batch_size=1, n_iter=1, steps=50, cfg_scale=7.0, width=512, height=512, restore_faces=False, tiling=False, do_not_save_samples=False, do_not_save_grid=False, extra_generation_params=None, overlay_images=None, negative_prompt=None):
self.sd_model = sd_model
self.outpath_samples: str = outpath_samples
self.outpath_grids: str = outpath_grids
@@ -37,6 +37,10 @@ class StableDiffusionProcessing: self.prompt_for_display: str = None
self.negative_prompt: str = (negative_prompt or "")
self.seed: int = seed
+ self.subseed: int = subseed
+ self.subseed_strength: float = subseed_strength
+ self.seed_resize_from_h: int = seed_resize_from_h
+ self.seed_resize_from_w: int = seed_resize_from_w
self.sampler_index: int = sampler_index
self.batch_size: int = batch_size
self.n_iter: int = n_iter
@@ -84,23 +88,67 @@ class Processed: return json.dumps(obj)
+# from https://discuss.pytorch.org/t/help-regarding-slerp-function-for-generative-model-sampling/32475/3
+def slerp(val, low, high):
+ low_norm = low/torch.norm(low, dim=1, keepdim=True)
+ high_norm = high/torch.norm(high, dim=1, keepdim=True)
+ omega = torch.acos((low_norm*high_norm).sum(1))
+ so = torch.sin(omega)
+ res = (torch.sin((1.0-val)*omega)/so).unsqueeze(1)*low + (torch.sin(val*omega)/so).unsqueeze(1) * high
+ return res
-def create_random_tensors(shape, seeds):
+
+def create_random_tensors(shape, seeds, subseeds=None, subseed_strength=0.0, seed_resize_from_h=0, seed_resize_from_w=0):
xs = []
- for seed in seeds:
- torch.manual_seed(seed)
+ for i, seed in enumerate(seeds):
+ noise_shape = shape if seed_resize_from_h <= 0 or seed_resize_from_w <= 0 else (shape[0], seed_resize_from_h//8, seed_resize_from_w//8)
+
+ subnoise = None
+ if subseeds is not None:
+ subseed = 0 if i >= len(subseeds) else subseeds[i]
+ torch.manual_seed(subseed)
+ subnoise = torch.randn(noise_shape, device=shared.device)
# randn results depend on device; gpu and cpu get different results for same seed;
# the way I see it, it's better to do this on CPU, so that everyone gets same result;
- # but the original script had it like this so I do not dare change it for now because
+ # but the original script had it like this, so I do not dare change it for now because
# it will break everyone's seeds.
- xs.append(torch.randn(shape, device=shared.device))
- x = torch.stack(xs)
+ torch.manual_seed(seed)
+ noise = torch.randn(noise_shape, device=shared.device)
+
+ if subnoise is not None:
+ #noise = subnoise * subseed_strength + noise * (1 - subseed_strength)
+ noise = slerp(subseed_strength, noise, subnoise)
+
+ if noise_shape != shape:
+ #noise = torch.nn.functional.interpolate(noise.unsqueeze(1), size=shape[1:], mode="bilinear").squeeze()
+ # noise_shape = (64, 80)
+ # shape = (64, 72)
+
+ torch.manual_seed(seed)
+ x = torch.randn(shape, device=shared.device)
+ dx = (shape[2] - noise_shape[2]) // 2 # -4
+ dy = (shape[1] - noise_shape[1]) // 2
+ w = noise_shape[2] if dx >= 0 else noise_shape[2] + 2 * dx
+ h = noise_shape[1] if dy >= 0 else noise_shape[1] + 2 * dy
+ tx = 0 if dx < 0 else dx
+ ty = 0 if dy < 0 else dy
+ dx = max(-dx, 0)
+ dy = max(-dy, 0)
+
+ x[:, ty:ty+h, tx:tx+w] = noise[:, dy:dy+h, dx:dx+w]
+ noise = x
+
+
+
+ xs.append(noise)
+ x = torch.stack(xs).to(shared.device)
return x
-def set_seed(seed):
- return int(random.randrange(4294967294)) if seed is None or seed == -1 else seed
+def fix_seed(p):
+ p.seed = int(random.randrange(4294967294)) if p.seed is None or p.seed == -1 else p.seed
+ p.subseed = int(random.randrange(4294967294)) if p.subseed is None or p.subseed == -1 else p.subseed
def process_images(p: StableDiffusionProcessing) -> Processed:
@@ -111,7 +159,7 @@ def process_images(p: StableDiffusionProcessing) -> Processed: assert p.prompt is not None
torch_gc()
- seed = set_seed(p.seed)
+ fix_seed(p)
os.makedirs(p.outpath_samples, exist_ok=True)
os.makedirs(p.outpath_grids, exist_ok=True)
@@ -125,20 +173,31 @@ def process_images(p: StableDiffusionProcessing) -> Processed: else:
all_prompts = p.batch_size * p.n_iter * [prompt]
- if type(seed) == list:
- all_seeds = seed
+ if type(p.seed) == list:
+ all_seeds = int(p.seed)
else:
- all_seeds = [int(seed + x) for x in range(len(all_prompts))]
+ all_seeds = [int(p.seed + x) for x in range(len(all_prompts))]
+
+ if type(p.subseed) == list:
+ all_subseeds = p.subseed
+ else:
+ all_subseeds = [int(p.subseed + x) for x in range(len(all_prompts))]
def infotext(iteration=0, position_in_batch=0):
+ index = position_in_batch + iteration * p.batch_size
+
generation_params = {
"Steps": p.steps,
"Sampler": samplers[p.sampler_index].name,
"CFG scale": p.cfg_scale,
- "Seed": all_seeds[position_in_batch + iteration * p.batch_size],
+ "Seed": all_seeds[index],
"Face restoration": (opts.face_restoration_model if p.restore_faces else None),
+ "Size": f"{p.width}x{p.height}",
"Batch size": (None if p.batch_size < 2 else p.batch_size),
"Batch pos": (None if p.batch_size < 2 else position_in_batch),
+ "Variation seed": (None if p.subseed_strength == 0 else all_subseeds[index]),
+ "Variation seed strength": (None if p.subseed_strength == 0 else p.subseed_strength),
+ "Seed resize from": (None if p.seed_resize_from_w == 0 or p.seed_resize_from_h == 0 else f"{p.seed_resize_from_w}x{p.seed_resize_from_h}"),
}
if p.extra_generation_params is not None:
@@ -174,7 +233,7 @@ def process_images(p: StableDiffusionProcessing) -> Processed: comments += model_hijack.comments
# we manually generate all input noises because each one should have a specific seed
- x = create_random_tensors([opt_C, p.height // opt_f, p.width // opt_f], seeds=seeds)
+ x = create_random_tensors([opt_C, p.height // opt_f, p.width // opt_f], seeds=seeds, subseeds=all_subseeds, subseed_strength=p.subseed_strength, seed_resize_from_h=p.seed_resize_from_h, seed_resize_from_w=p.seed_resize_from_w)
if p.n_iter > 1:
shared.state.job = f"Batch {n+1} out of {p.n_iter}"
@@ -231,10 +290,10 @@ def process_images(p: StableDiffusionProcessing) -> Processed: output_images.insert(0, grid)
if opts.grid_save:
- images.save_image(grid, p.outpath_grids, "grid", seed, all_prompts[0], opts.grid_format, info=infotext(), short_filename=not opts.grid_extended_filename)
+ images.save_image(grid, p.outpath_grids, "grid", all_seeds[0], all_prompts[0], opts.grid_format, info=infotext(), short_filename=not opts.grid_extended_filename)
torch_gc()
- return Processed(p, output_images, seed, infotext())
+ return Processed(p, output_images, all_seeds[0], infotext())
class StableDiffusionProcessingTxt2Img(StableDiffusionProcessing):
|