third_party/diffsynth/examples/ideogram4/model_inference_low_vram/ideogram-4-bf16-repackage.py

from diffsynth.pipelines.ideogram4 import Ideogram4Pipeline
from diffsynth.core import ModelConfig
import torch

vram_config = {
    "offload_dtype": torch.float8_e4m3fn,
    "offload_device": "cpu",
    "onload_dtype": torch.float8_e4m3fn,
    "onload_device": "cpu",
    "preparing_dtype": torch.float8_e4m3fn,
    "preparing_device": "cuda",
    "computation_dtype": torch.bfloat16,
    "computation_device": "cuda",
}
pipe = Ideogram4Pipeline.from_pretrained(
    torch_dtype=torch.bfloat16,
    device="cuda",
    model_configs=[
        ModelConfig(model_id="DiffSynth-Studio/ideogram-4-bf16-repackage", origin_file_pattern="transformer/diffusion_pytorch_model.safetensors", **vram_config),
        # unconditional_transformer is optional. You can delete this line to reduce VRAM required.
        # ModelConfig(model_id="DiffSynth-Studio/ideogram-4-bf16-repackage", origin_file_pattern="unconditional_transformer/diffusion_pytorch_model.safetensors", **vram_config),
        ModelConfig(model_id="DiffSynth-Studio/ideogram-4-bf16-repackage", origin_file_pattern="text_encoder/model.safetensors", **vram_config),
        ModelConfig(model_id="DiffSynth-Studio/ideogram-4-bf16-repackage", origin_file_pattern="vae/diffusion_pytorch_model.safetensors", **vram_config),
    ],
    tokenizer_config=ModelConfig(model_id="ideogram-ai/ideogram-4-fp8", origin_file_pattern="tokenizer/"),
    vram_limit=torch.cuda.mem_get_info("cuda")[1] / (1024 ** 3) - 0.5,
)
prompt = r"""
{
  "high_level_description": "A medium-shot photograph of Formula 1 driver Max Verstappen wearing his Red Bull Racing racing suit and cap, smiling as he holds his racing helmet and talks to a man in a white shirt and black vest at a race track.",
  "style_description": {
    "aesthetics": "saturated primary colors, rule of thirds, joyful and triumphant",
    "lighting": "overcast daylight, diffused, soft subtle shadows",
    "photo": "shallow depth of field, sharp focus, eye-level, telephoto",
    "medium": "photograph"
  },
  "compositional_deconstruction": {
    "background": "The background is an out-of-focus racing paddock or track environment. Several blurred figures are visible, including one in an orange shirt. A purple and white structure with a red 'F1' logo stands on the left. The scene is outdoors with daylight, though the sky is not visible.",
    "elements": [
      {"type": "obj", "bbox": [55, 642, 1000, 937], "desc": "An older man standing in profile, facing left toward Max Verstappen. He has grey hair and fair skin. He is wearing a white long-sleeved button-down shirt with a navy blue quilted vest over it. He has a slight smile."},
      {"type": "obj", "bbox": [34, 137, 1000, 617], "desc": "Max Verstappen, a fair-skinned male Formula 1 driver, positioned in the center. He is facing forward with a joyful expression and a slight smile. He wears a navy blue Red Bull Racing team uniform with numerous sponsor logos and a matching baseball cap with the number '1'. He is holding a white and red racing helmet in his hands. He has a silver watch on his left wrist."},
      {"type": "obj", "bbox": [422, 212, 792, 452], "desc": "Max Verstappen's racing helmet, held in front of his chest. It features a white, red, and yellow design with the Red Bull logo and the 'Player 0.0' branding. The visor is clear and open."},
      {"type": "text", "bbox": [657, 0, 755, 142], "text": "F1", "desc": "Large, stylized red logo on a black and purple background in the lower left."},
      {"type": "text", "bbox": [768, 0, 818, 147], "text": "Formula 1\nWorld Championship™", "desc": "Small white sans-serif text below the F1 logo on the left side."},
      {"type": "text", "bbox": [78, 447, 117, 510], "text": "ORACLE\nRed Bull\nRacing", "desc": "Very small white and orange logo on the front of the navy blue cap."},
      {"type": "text", "bbox": [78, 417, 120, 440], "text": "1", "desc": "Bold red numeral '1' on the front left side of the navy blue cap."},
      {"type": "text", "bbox": [332, 442, 363, 483], "text": "Red Bull", "desc": "Small yellow and red text logo on the collar of the uniform."},
      {"type": "text", "bbox": [373, 490, 423, 532], "text": "RAUCH", "desc": "Small yellow and blue logo on the right chest of the uniform."},
      {"type": "text", "bbox": [422, 473, 500, 532], "text": "BYBIT\nHONDA", "desc": "Medium-sized white sans-serif text on the right chest of the uniform."},
      {"type": "text", "bbox": [410, 203, 442, 257], "text": "RAUCH", "desc": "Small yellow logo on the left upper arm of the uniform."},
      {"type": "text", "bbox": [530, 448, 627, 510], "text": "Red Bull", "desc": "Medium red text logo on the right side of the torso, part of the Red Bull graphic."},
      {"type": "text", "bbox": [680, 417, 768, 523], "text": "Red Bull", "desc": "Large red text logo across the lower torso of the uniform."},
      {"type": "text", "bbox": [797, 475, 815, 518], "text": "MAX", "desc": "Small white text next to a Dutch flag on the belt area of the uniform."},
      {"type": "text", "bbox": [558, 317, 715, 355], "text": "Player 0.0", "desc": "Black sans-serif text on a white band on the racing helmet."},
      {"type": "text", "bbox": [560, 800, 582, 835], "text": "IA.COM", "desc": "Small blue sans-serif text on the right sleeve of the white shirt."},
      {"type": "text", "bbox": [968, 8, 997, 332], "text": "© Anadolu Agency via Getty Images", "desc": "Small white watermark text in the bottom left corner."}
    ]
  }
}
"""
image = pipe(prompt=prompt, height=1024, width=1024, num_inference_steps=48, cfg_scale=7.0, seed=42)
image.save("image_ideogram-4-bf16-repackage.jpg")