add test for "Adapting SDXL" guide

docs/guides/adapting_sdxl/index.md

@@ -58,9 +58,9 @@ Then, define the inference parameters by setting the appropriate prompt / seed /
 prompt = "a futuristic castle surrounded by a forest, mountains in the background"
 seed = 42
 sdxl.set_inference_steps(50, first_step=0)
-sdxl.set_self_attention_guidance(
+
-    enable=True, scale=0.75
+# Enable self-attention guidance to enhance the quality of the generated images
-)  # Enable self-attention guidance to enhance the quality of the generated images
+sdxl.set_self_attention_guidance(enable=True, scale=0.75)
 
 # ... Inference process
 
@@ -76,10 +76,10 @@ with no_grad():  # Disable gradient calculation for memory-efficient inference
     )
     time_ids = sdxl.default_time_ids
 
-    manual_seed(seed=seed)
+    manual_seed(seed)
 
-    # Using a higher latents inner dim to improve resolution of generated images
+    # SDXL typically generates 1024x1024, here we use a higher resolution.
-    x = torch.randn(size=(1, 4, 256, 256), device=sdxl.device, dtype=sdxl.dtype)
+    x = sdxl.init_latents((2048, 2048)).to(sdxl.device, sdxl.dtype)
 
     # Diffusion process
     for step in sdxl.steps:
@@ -131,8 +131,8 @@ predicted_image.save("vanilla_sdxl.png")
 
         manual_seed(seed=seed)
 
-        # Using a higher latents inner dim to improve resolution of generated images
+        # SDXL typically generates 1024x1024, here we use a higher resolution.
-        x = torch.randn(size=(1, 4, 256, 256), device=sdxl.device, dtype=sdxl.dtype)
+        x = sdxl.init_latents((2048, 2048)).to(sdxl.device, sdxl.dtype)
 
         # Diffusion process
         for step in sdxl.steps:
@@ -213,8 +213,8 @@ manager.add_loras("scifi-lora", tensors=scifi_lora_weights)
 
         manual_seed(seed=seed)
 
-        # Using a higher latents inner dim to improve resolution of generated images
+        # SDXL typically generates 1024x1024, here we use a higher resolution.
-        x = torch.randn(size=(1, 4, 256, 256), device=sdxl.device, dtype=sdxl.dtype)
+        x = sdxl.init_latents((2048, 2048)).to(sdxl.device, sdxl.dtype)
 
         # Diffusion process
         for step in sdxl.steps:
@@ -304,8 +304,8 @@ manager.add_loras("pixel-art-lora", load_from_safetensors("pixel-art-xl-v1.1.saf
 
         manual_seed(seed=seed)
 
-        # Using a higher latents inner dim to improve resolution of generated images
+        # SDXL typically generates 1024x1024, here we use a higher resolution.
-        x = torch.randn(size=(1, 4, 256, 256), device=sdxl.device, dtype=sdxl.dtype)
+        x = sdxl.init_latents((2048, 2048)).to(sdxl.device, sdxl.dtype)
 
         # Diffusion process
         for step in sdxl.steps:
@@ -440,7 +440,7 @@ with torch.no_grad():
         ip_adapter.set_clip_image_embedding(clip_image_embedding)
 
         manual_seed(seed=seed)
-        x = torch.randn(size=(1, 4, 128, 128), device=sdxl.device, dtype=sdxl.dtype)
+        x = sdxl.init_latents((1024, 1024)).to(sdxl.device, sdxl.dtype)
 
         # Diffusion process
         for step in sdxl.steps:
@@ -578,7 +578,7 @@ with torch.no_grad():
         t2i_adapter.set_condition_features(features=t2i_adapter.compute_condition_features(condition))
 
         manual_seed(seed=seed)
-        x = torch.randn(size=(1, 4, 128, 128), device=sdxl.device, dtype=sdxl.dtype)
+        x = sdxl.init_latents((1024, 1024)).to(sdxl.device, sdxl.dtype)
 
         # Diffusion process
         for step in sdxl.steps:

scripts/prepare_test_weights.py

@@ -253,6 +253,20 @@ def download_loras():
     )
     download_file("https://sliders.baulab.info/weights/xl_sliders/eyesize.pt", dest_folder, expected_hash="ee170e4d")
 
+    dest_folder = os.path.join(test_weights_dir, "loras")
+    download_file(
+        "https://civitai.com/api/download/models/140624",
+        filename="Sci-fi_Environments_sdxl.safetensors",
+        dest_folder=dest_folder,
+        expected_hash="6a4afda8",
+    )
+    download_file(
+        "https://civitai.com/api/download/models/135931",
+        filename="pixel-art-xl-v1.1.safetensors",
+        dest_folder=dest_folder,
+        expected_hash="71aaa6ca",
+    )
+
 
 def download_preprocessors():
     dest_folder = os.path.join(test_weights_dir, "carolineec", "informativedrawings")

tests/e2e/test_doc_examples.py

@@ -0,0 +1,321 @@
+import gc
+from pathlib import Path
+from warnings import warn
+
+import pytest
+import torch
+from PIL import Image
+
+from refiners.fluxion.utils import load_from_safetensors, manual_seed, no_grad
+from refiners.foundationals.latent_diffusion import SDXLIPAdapter
+from refiners.foundationals.latent_diffusion.lora import SDLoraManager
+from refiners.foundationals.latent_diffusion.stable_diffusion_xl.model import StableDiffusion_XL
+from tests.utils import ensure_similar_images
+
+
+@pytest.fixture(autouse=True)
+def ensure_gc():
+    # Avoid GPU OOMs
+    # See https://github.com/pytest-dev/pytest/discussions/8153#discussioncomment-214812
+    gc.collect()
+
+
+@pytest.fixture(scope="module")
+def ref_path(test_e2e_path: Path) -> Path:
+    return test_e2e_path / "test_doc_examples_ref"
+
+
+@pytest.fixture(scope="module")
+def sdxl_text_encoder_weights(test_weights_path: Path) -> Path:
+    path = test_weights_path / "DoubleCLIPTextEncoder.safetensors"
+    if not path.is_file():
+        warn(message=f"could not find weights at {path}, skipping")
+        pytest.skip(allow_module_level=True)
+    return path
+
+
+@pytest.fixture(scope="module")
+def sdxl_lda_fp16_fix_weights(test_weights_path: Path) -> Path:
+    path = test_weights_path / "sdxl-lda-fp16-fix.safetensors"
+    if not path.is_file():
+        warn(message=f"could not find weights at {path}, skipping")
+        pytest.skip(allow_module_level=True)
+    return path
+
+
+@pytest.fixture(scope="module")
+def sdxl_unet_weights(test_weights_path: Path) -> Path:
+    path = test_weights_path / "sdxl-unet.safetensors"
+    if not path.is_file():
+        warn(message=f"could not find weights at {path}, skipping")
+        pytest.skip(allow_module_level=True)
+    return path
+
+
+@pytest.fixture(scope="module")
+def sdxl_ip_adapter_plus_weights(test_weights_path: Path) -> Path:
+    path = test_weights_path / "ip-adapter-plus_sdxl_vit-h.safetensors"
+    if not path.is_file():
+        warn(f"could not find weights at {path}, skipping")
+        pytest.skip(allow_module_level=True)
+    return path
+
+
+@pytest.fixture(scope="module")
+def image_encoder_weights(test_weights_path: Path) -> Path:
+    path = test_weights_path / "CLIPImageEncoderH.safetensors"
+    if not path.is_file():
+        warn(f"could not find weights at {path}, skipping")
+        pytest.skip(allow_module_level=True)
+    return path
+
+
+@pytest.fixture
+def scifi_lora_weights(test_weights_path: Path) -> Path:
+    path = test_weights_path / "loras" / "Sci-fi_Environments_sdxl.safetensors"
+    if not path.is_file():
+        warn(message=f"could not find weights at {path}, skipping")
+        pytest.skip(allow_module_level=True)
+    return path
+
+
+@pytest.fixture
+def pixelart_lora_weights(test_weights_path: Path) -> Path:
+    path = test_weights_path / "loras" / "pixel-art-xl-v1.1.safetensors"
+    if not path.is_file():
+        warn(message=f"could not find weights at {path}, skipping")
+        pytest.skip(allow_module_level=True)
+    return path
+
+
+@pytest.fixture
+def sdxl(
+    sdxl_text_encoder_weights: Path,
+    sdxl_lda_fp16_fix_weights: Path,
+    sdxl_unet_weights: Path,
+    test_device: torch.device,
+) -> StableDiffusion_XL:
+    if test_device.type == "cpu":
+        warn(message="not running on CPU, skipping")
+        pytest.skip()
+
+    sdxl = StableDiffusion_XL(device=test_device, dtype=torch.float16)
+
+    sdxl.clip_text_encoder.load_from_safetensors(tensors_path=sdxl_text_encoder_weights)
+    sdxl.lda.load_from_safetensors(tensors_path=sdxl_lda_fp16_fix_weights)
+    sdxl.unet.load_from_safetensors(tensors_path=sdxl_unet_weights)
+
+    return sdxl
+
+
+@pytest.fixture
+def image_prompt_german_castle(ref_path: Path) -> Image.Image:
+    return Image.open(ref_path / "german-castle.jpg").convert("RGB")
+
+
+@pytest.fixture
+def expected_image_guide_adapting_sdxl_vanilla(ref_path: Path) -> Image.Image:
+    return Image.open(ref_path / "expected_image_guide_adapting_sdxl_vanilla.png").convert("RGB")
+
+
+@pytest.fixture
+def expected_image_guide_adapting_sdxl_single_lora(ref_path: Path) -> Image.Image:
+    return Image.open(ref_path / "expected_image_guide_adapting_sdxl_single_lora.png").convert("RGB")
+
+
+@pytest.fixture
+def expected_image_guide_adapting_sdxl_multiple_loras(ref_path: Path) -> Image.Image:
+    return Image.open(ref_path / "expected_image_guide_adapting_sdxl_multiple_loras.png").convert("RGB")
+
+
+@pytest.fixture
+def expected_image_guide_adapting_sdxl_loras_ip_adapter(ref_path: Path) -> Image.Image:
+    return Image.open(ref_path / "expected_image_guide_adapting_sdxl_loras_ip_adapter.png").convert("RGB")
+
+
+@no_grad()
+def test_guide_adapting_sdxl_vanilla(
+    test_device: torch.device,
+    sdxl: StableDiffusion_XL,
+    expected_image_guide_adapting_sdxl_vanilla: Image.Image,
+) -> None:
+    if test_device.type == "cpu":
+        warn(message="not running on CPU, skipping")
+        pytest.skip()
+
+    expected_image = expected_image_guide_adapting_sdxl_vanilla
+
+    prompt = "a futuristic castle surrounded by a forest, mountains in the background"
+    seed = 42
+    sdxl.set_inference_steps(50, first_step=0)
+    sdxl.set_self_attention_guidance(enable=True, scale=0.75)
+
+    clip_text_embedding, pooled_text_embedding = sdxl.compute_clip_text_embedding(
+        text=prompt + ", best quality, high quality",
+        negative_text="monochrome, lowres, bad anatomy, worst quality, low quality",
+    )
+    time_ids = sdxl.default_time_ids
+
+    manual_seed(seed)
+    # The guide uses 2048x2048 but it is too slow for tests.
+    x = sdxl.init_latents((1024, 1024)).to(sdxl.device, sdxl.dtype)
+    for step in sdxl.steps:
+        x = sdxl(
+            x,
+            step=step,
+            clip_text_embedding=clip_text_embedding,
+            pooled_text_embedding=pooled_text_embedding,
+            time_ids=time_ids,
+        )
+
+    predicted_image = sdxl.lda.decode_latents(x)
+    ensure_similar_images(predicted_image, expected_image)
+
+
+@no_grad()
+def test_guide_adapting_sdxl_single_lora(
+    test_device: torch.device,
+    sdxl: StableDiffusion_XL,
+    scifi_lora_weights: Path,
+    expected_image_guide_adapting_sdxl_single_lora: Image.Image,
+) -> None:
+    if test_device.type == "cpu":
+        warn(message="not running on CPU, skipping")
+        pytest.skip()
+
+    expected_image = expected_image_guide_adapting_sdxl_single_lora
+
+    prompt = "a futuristic castle surrounded by a forest, mountains in the background"
+    seed = 42
+    sdxl.set_inference_steps(50, first_step=0)
+    sdxl.set_self_attention_guidance(enable=True, scale=0.75)
+
+    manager = SDLoraManager(sdxl)
+    manager.add_loras("scifi-lora", load_from_safetensors(scifi_lora_weights))
+
+    clip_text_embedding, pooled_text_embedding = sdxl.compute_clip_text_embedding(
+        text=prompt + ", best quality, high quality",
+        negative_text="monochrome, lowres, bad anatomy, worst quality, low quality",
+    )
+    time_ids = sdxl.default_time_ids
+
+    manual_seed(seed)
+    x = sdxl.init_latents((1024, 1024)).to(sdxl.device, sdxl.dtype)
+    for step in sdxl.steps:
+        x = sdxl(
+            x,
+            step=step,
+            clip_text_embedding=clip_text_embedding,
+            pooled_text_embedding=pooled_text_embedding,
+            time_ids=time_ids,
+        )
+
+    predicted_image = sdxl.lda.decode_latents(x)
+    ensure_similar_images(predicted_image, expected_image)
+
+
+@no_grad()
+def test_guide_adapting_sdxl_multiple_loras(
+    test_device: torch.device,
+    sdxl: StableDiffusion_XL,
+    scifi_lora_weights: Path,
+    pixelart_lora_weights: Path,
+    expected_image_guide_adapting_sdxl_multiple_loras: Image.Image,
+) -> None:
+    if test_device.type == "cpu":
+        warn(message="not running on CPU, skipping")
+        pytest.skip()
+
+    expected_image = expected_image_guide_adapting_sdxl_multiple_loras
+
+    prompt = "a futuristic castle surrounded by a forest, mountains in the background"
+    seed = 42
+    sdxl.set_inference_steps(50, first_step=0)
+    sdxl.set_self_attention_guidance(enable=True, scale=0.75)
+
+    manager = SDLoraManager(sdxl)
+    manager.add_loras("scifi-lora", load_from_safetensors(scifi_lora_weights))
+    manager.add_loras("pixel-art-lora", load_from_safetensors(pixelart_lora_weights), scale=1.4)
+
+    clip_text_embedding, pooled_text_embedding = sdxl.compute_clip_text_embedding(
+        text=prompt + ", best quality, high quality",
+        negative_text="monochrome, lowres, bad anatomy, worst quality, low quality",
+    )
+    time_ids = sdxl.default_time_ids
+
+    manual_seed(seed)
+    x = sdxl.init_latents((1024, 1024)).to(sdxl.device, sdxl.dtype)
+    for step in sdxl.steps:
+        x = sdxl(
+            x,
+            step=step,
+            clip_text_embedding=clip_text_embedding,
+            pooled_text_embedding=pooled_text_embedding,
+            time_ids=time_ids,
+        )
+
+    predicted_image = sdxl.lda.decode_latents(x)
+    ensure_similar_images(predicted_image, expected_image)
+
+
+@no_grad()
+def test_guide_adapting_sdxl_loras_ip_adapter(
+    test_device: torch.device,
+    sdxl: StableDiffusion_XL,
+    sdxl_ip_adapter_plus_weights: Path,
+    image_encoder_weights: Path,
+    scifi_lora_weights: Path,
+    pixelart_lora_weights: Path,
+    image_prompt_german_castle: Image.Image,
+    expected_image_guide_adapting_sdxl_loras_ip_adapter: Image.Image,
+) -> None:
+    if test_device.type == "cpu":
+        warn(message="not running on CPU, skipping")
+        pytest.skip()
+
+    expected_image = expected_image_guide_adapting_sdxl_loras_ip_adapter
+
+    prompt = "a futuristic castle surrounded by a forest, mountains in the background"
+    seed = 42
+    sdxl.set_inference_steps(50, first_step=0)
+    sdxl.set_self_attention_guidance(enable=True, scale=0.75)
+
+    manager = SDLoraManager(sdxl)
+    manager.add_loras("scifi-lora", load_from_safetensors(scifi_lora_weights), scale=1.5)
+    manager.add_loras("pixel-art-lora", load_from_safetensors(pixelart_lora_weights), scale=1.55)
+
+    ip_adapter = SDXLIPAdapter(
+        target=sdxl.unet,
+        weights=load_from_safetensors(sdxl_ip_adapter_plus_weights),
+        scale=1.0,
+        fine_grained=True,
+    )
+    ip_adapter.clip_image_encoder.load_from_safetensors(image_encoder_weights)
+    ip_adapter.inject()
+
+    clip_text_embedding, pooled_text_embedding = sdxl.compute_clip_text_embedding(
+        text=prompt + ", best quality, high quality",
+        negative_text="monochrome, lowres, bad anatomy, worst quality, low quality",
+    )
+    time_ids = sdxl.default_time_ids
+
+    image_prompt_preprocessed = ip_adapter.preprocess_image(image_prompt_german_castle)
+    clip_image_embedding = ip_adapter.compute_clip_image_embedding(image_prompt_preprocessed)
+    ip_adapter.set_clip_image_embedding(clip_image_embedding)
+
+    manual_seed(seed)
+    x = sdxl.init_latents((1024, 1024)).to(sdxl.device, sdxl.dtype)
+    for step in sdxl.steps:
+        x = sdxl(
+            x,
+            step=step,
+            clip_text_embedding=clip_text_embedding,
+            pooled_text_embedding=pooled_text_embedding,
+            time_ids=time_ids,
+        )
+
+    predicted_image = sdxl.lda.decode_latents(x)
+    ensure_similar_images(predicted_image, expected_image)
+
+
+# We do not (yet) test the last example using T2i-Adapter with Zoe Depth.

tests/e2e/test_doc_examples_ref/README.md

@@ -0,0 +1,5 @@
+# Note about this data
+
+Everything in this directory comes from Refiners' documentation.
+
+Some outputs are different because we perform inference in 1024x1024 and not 2048x2048.