纹理生成请求体

{
    "model": "tencent/hunyuan-3d-texture",
    "file_3d": {
        "type": "OBJ",
        "url": "https://example.com/model.obj",
        "preview_image_url": "https://example.com/preview.jpg"
    },
    "prompt": "木纹材质",
    "image": {
        "url": "https://example.com/image.jpg",
        "base64": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA..."
    },
    "image_url": "https://example.com/texture_reference.jpg",
    "image_base64": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA...",
    "enable_pbr": false
}