Updated how prompt seeds are generated

These are now returned from the get_seeds function which decides whether if should be the same as image seeds or generated separately. Fixes #535

sd_dynamic_prompts/dynamic_prompting.py

@@ -464,24 +464,26 @@ def process(
             else:
                 negative_generator = generator
 
-            all_seeds = None
-            if num_images and not unlink_seed_from_prompt:
-                p.all_seeds, p.all_subseeds = get_seeds(
+            prompt_seeds = p.all_seeds
+            if num_images:
+                image_seeds, image_subseeds, prompt_seeds = get_seeds(
                     p,
                     num_images,
                     use_fixed_seed,
                     is_combinatorial,
                     combinatorial_batches,
+                    unlink_seed_from_prompt,
                 )
-                all_seeds = p.all_seeds
+                p.all_seeds = image_seeds
+                p.all_subseeds = image_subseeds
 
             all_prompts, all_negative_prompts = generate_prompts(
                 generator,
                 negative_generator,
                 original_prompt,
                 original_negative_prompt,
                 num_images,
-                all_seeds,
+                prompt_seeds,
             )
 
         except GeneratorException as e:
@@ -493,12 +495,13 @@ def process(
         p.n_iter = math.ceil(updated_count / p.batch_size)
 
         if num_images != updated_count:
-            p.all_seeds, p.all_subseeds = get_seeds(
+            p.all_seeds, p.all_subseeds, _ = get_seeds(
                 p,
                 updated_count,
                 use_fixed_seed,
                 is_combinatorial,
                 combinatorial_batches,
+                unlink_seed_from_prompt,
             )
 
         if updated_count > 1:

sd_dynamic_prompts/helpers.py

@@ -1,19 +1,29 @@
 from __future__ import annotations
 
 import logging
+import random
 from pathlib import Path
 
 from dynamicprompts.generators.promptgenerator import PromptGenerator
 
 logger = logging.getLogger(__name__)
 
 
+def get_fixed_seed(seed):
+    # Copied from auto1111 modules/processing.py
+    if seed is None or seed == "" or seed == -1:
+        return int(random.randrange(4294967294))
+
+    return seed
+
+
 def get_seeds(
     p,
     num_seeds,
     use_fixed_seed,
     is_combinatorial=False,
     combinatorial_batches=1,
+    unlink_seed_from_prompt=False,
 ):
     if p.subseed_strength != 0:
         seed = int(p.all_seeds[0])
@@ -24,22 +34,27 @@ def get_seeds(
 
     if use_fixed_seed:
         if is_combinatorial:
-            all_seeds = []
-            all_subseeds = [subseed] * num_seeds
+            image_seeds = []
+            image_subseeds = [subseed] * num_seeds
             for i in range(combinatorial_batches):
-                all_seeds.extend([seed + i] * (num_seeds // combinatorial_batches))
+                image_seeds.extend([seed + i] * (num_seeds // combinatorial_batches))
         else:
-            all_seeds = [seed] * num_seeds
-            all_subseeds = [subseed] * num_seeds
+            image_seeds = [seed] * num_seeds
+            image_subseeds = [subseed] * num_seeds
     else:
         if p.subseed_strength == 0:
-            all_seeds = [seed + i for i in range(num_seeds)]
+            image_seeds = [seed + i for i in range(num_seeds)]
         else:
-            all_seeds = [seed] * num_seeds
+            image_seeds = [seed] * num_seeds
 
-        all_subseeds = [subseed + i for i in range(num_seeds)]
+        image_subseeds = [subseed + i for i in range(num_seeds)]
+
+    if unlink_seed_from_prompt:
+        prompt_seeds = [get_fixed_seed(None) for _ in range(num_seeds)]
+    else:
+        prompt_seeds = image_seeds
 
-    return all_seeds, all_subseeds
+    return image_seeds, image_subseeds, prompt_seeds
 
 
 def should_freeze_prompt(p):

tests/prompts/test_frozenprompt_generator.py

@@ -4,7 +4,9 @@
 
 
 def test_repeats_correctly():
-    generator = FrozenPromptGenerator(RandomPromptGenerator())
+    generator = FrozenPromptGenerator(
+        RandomPromptGenerator(unlink_seed_from_prompt=True),
+    )
     template = "{A|B|C|D|E|F|G|H|I|J|K}"
     prompts = generator.generate(template, 10)
 
@@ -15,5 +17,4 @@ def test_repeats_correctly():
 
     assert len(prompts2) == 10
     assert len(set(prompts2)) == 1
-
     assert prompts[0] != prompts2[0]

tests/prompts/test_helpers.py

@@ -22,67 +22,104 @@ def processing():
 def test_get_seeds_with_fixed_seed(processing):
     num_seeds = 10
 
-    seeds, subseeds = get_seeds(processing, num_seeds, use_fixed_seed=True)
-    assert seeds == [processing.seed] * num_seeds
-    assert subseeds == [processing.subseed] * num_seeds
+    image_seeds, image_subseeds, _ = get_seeds(
+        processing,
+        num_seeds,
+        use_fixed_seed=True,
+    )
+    assert image_seeds == [processing.seed] * num_seeds
+    assert image_subseeds == [processing.subseed] * num_seeds
 
     processing.subseed_strength = 0.5
 
-    seeds, subseeds = get_seeds(processing, num_seeds, use_fixed_seed=True)
-    assert seeds == [processing.all_seeds[0]] * num_seeds
-    assert subseeds == [processing.all_subseeds[0]] * num_seeds
+    image_seeds, image_subseeds, _ = get_seeds(
+        processing,
+        num_seeds,
+        use_fixed_seed=True,
+    )
+    assert image_seeds == [processing.all_seeds[0]] * num_seeds
+    assert image_subseeds == [processing.all_subseeds[0]] * num_seeds
 
 
 def test_get_seeds_with_fixed_seed_batched_combinatorial(processing):
     num_seeds = 10
     combinatorial_batches = 3
-    seeds, subseeds = get_seeds(
+    image_seeds, image_subseeds, _ = get_seeds(
         processing,
         num_seeds,
         use_fixed_seed=True,
         is_combinatorial=True,
         combinatorial_batches=combinatorial_batches,
     )
     seed0 = processing.seed
-    assert seeds == (
+    assert image_seeds == (
         [seed0] * (num_seeds // 3)
         + [seed0 + 1] * (num_seeds // 3)
         + [seed0 + 2] * (num_seeds // 3)
     )
-    assert subseeds == [processing.subseed] * num_seeds
+    assert image_subseeds == [processing.subseed] * num_seeds
 
     processing.subseed_strength = 0.5
 
-    seeds, subseeds = get_seeds(
+    image_seeds, image_subseeds, _ = get_seeds(
         processing,
         num_seeds,
         use_fixed_seed=True,
         is_combinatorial=True,
         combinatorial_batches=combinatorial_batches,
     )
     seed0 = processing.all_seeds[0]
-    assert seeds == (
+    assert image_seeds == (
         [seed0] * (num_seeds // 3)
         + [seed0 + 1] * (num_seeds // 3)
         + [seed0 + 2] * (num_seeds // 3)
     )
-    assert subseeds == [processing.all_subseeds[0]] * num_seeds
+    assert image_subseeds == [processing.all_subseeds[0]] * num_seeds
 
 
 def test_get_seeds_with_random_seed(processing):
     num_seeds = 10
 
-    seed, subseed = processing.seed, processing.subseed
-    seeds, subseeds = get_seeds(processing, num_seeds=num_seeds, use_fixed_seed=False)
-    assert seeds == list(range(seed, seed + num_seeds))
-    assert subseeds == list(range(subseed, subseed + num_seeds))
+    image_seeds, image_subseeds = processing.seed, processing.subseed
+    seeds, subseeds, _ = get_seeds(
+        processing,
+        num_seeds=num_seeds,
+        use_fixed_seed=False,
+    )
+    assert seeds == list(range(image_seeds, image_seeds + num_seeds))
+    assert subseeds == list(range(image_subseeds, image_subseeds + num_seeds))
 
     processing.subseed_strength = 0.5
 
-    seed, subseed = processing.all_seeds[0], processing.all_subseeds[0]
-    seeds, subseeds = get_seeds(processing, num_seeds=num_seeds, use_fixed_seed=False)
-    assert seeds == [seed] * num_seeds
-    assert subseeds == list(range(subseed, subseed + num_seeds))
+    image_seeds, image_subseeds = processing.all_seeds[0], processing.all_subseeds[0]
+    seeds, subseeds, _ = get_seeds(
+        processing,
+        num_seeds=num_seeds,
+        use_fixed_seed=False,
+    )
+    assert seeds == [image_seeds] * num_seeds
+    assert subseeds == list(range(image_subseeds, image_subseeds + num_seeds))
+
+
+@pytest.mark.parametrize("use_fixed_seed", [True, False])
+def test_get_with_unlinked_seed(processing, use_fixed_seed):
+    num_seeds = 10
+
+    image_seeds, _, prompt_seeds = get_seeds(
+        processing,
+        num_seeds,
+        use_fixed_seed=use_fixed_seed,
+        unlink_seed_from_prompt=False,
+    )
+    assert image_seeds == prompt_seeds
+
+    image_seeds, _, prompt_seeds = get_seeds(
+        processing,
+        num_seeds,
+        use_fixed_seed=use_fixed_seed,
+        unlink_seed_from_prompt=True,
+    )
+    assert image_seeds != prompt_seeds
 
 
 def test_load_magicprompt_models():