[Admin maintenance] Support new ZeroGPU hardware

Thank you so much for having shared this Space with the community on this demo. We have upgraded the ZeroGPU infra-structure to run on modern blackwell architecture.
For that, we need to upgrade your demo to support that. This PR fixes your demo to work with the new architecture. As this is something we broke on our end, we may merge this PR autonomously. If this breaks unexpectedly or brings unintended consequences, feel free to revert, modify or otherwise. Any issues you can email apolinario@huggingface.co

app.py

@@ -1,15 +1,97 @@
-import gradio as gr
+import os
+# Force attention backends compatible with the new ZeroGPU (Blackwell) stack.
+# Must be set BEFORE any trellis import.
+os.environ.setdefault('ATTN_BACKEND', 'xformers')
+os.environ.setdefault('SPARSE_ATTN_BACKEND', 'xformers')
+os.environ.setdefault('SPCONV_ALGO', 'native')
+
+import sys
+import subprocess
+import tempfile
+import ctypes
+
 import spaces
-from gradio_litmodel3d import LitModel3D
+import torch
+import gradio as gr
 
-import os
 import shutil
-os.environ['SPCONV_ALGO'] = 'native'
 from typing import *
-import torch
 import numpy as np
 import imageio
 from PIL import Image
+
+# Build nvdiffrast and diff_gaussian_rasterization from source on first GPU call.
+CUDA_HOME = "/cuda-image/usr/local/cuda-13.0"
+CUDA_LIBDIR = os.path.join(CUDA_HOME, "lib64")
+_NVDIFFRAST_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), "extensions", "nvdiffrast")
+
+
+@spaces.GPU(duration=600)
+def _first_gpu_setup():
+    need = {}
+    for name, modname in [
+        ("nvdiffrast", "nvdiffrast"),
+        ("diff_gaussian_rasterization", "diff_gaussian_rasterization"),
+    ]:
+        try:
+            __import__(modname)
+        except ImportError:
+            need[name] = True
+    if not need:
+        return
+
+    patch_dir = tempfile.mkdtemp(prefix="torch_cuda_patch_")
+    with open(os.path.join(patch_dir, "sitecustomize.py"), "w") as f:
+        f.write(
+            "try:\n"
+            "    import torch.utils.cpp_extension as _c\n"
+            "    _c._check_cuda_version = lambda *a, **k: None\n"
+            "except Exception:\n"
+            "    pass\n"
+        )
+
+    env = os.environ.copy()
+    env["CUDA_HOME"] = CUDA_HOME
+    env["CUDA_PATH"] = CUDA_HOME
+    env["PATH"] = os.path.join(CUDA_HOME, "bin") + os.pathsep + env.get("PATH", "")
+    env["PYTHONPATH"] = patch_dir + os.pathsep + env.get("PYTHONPATH", "")
+    env["TORCH_CUDA_ARCH_LIST"] = "12.0"  # Blackwell sm_120
+
+    subprocess.check_call(
+        [sys.executable, "-m", "pip", "install", "--no-deps",
+         "setuptools", "wheel", "ninja", "packaging"],
+    )
+
+    if "nvdiffrast" in need:
+        subprocess.check_call(
+            [sys.executable, "-m", "pip", "install",
+             "--no-build-isolation", "--no-deps",
+             _NVDIFFRAST_DIR],
+            env=env,
+        )
+    if "diff_gaussian_rasterization" in need:
+        # Hi3DGen actually uses the mip-splatting submodule fork; not the
+        # original graphdeco-inria release on PyPI.
+        mip = tempfile.mkdtemp(prefix="mip_")
+        subprocess.check_call(
+            ["git", "clone", "--recursive", "--depth=1",
+             "https://github.com/autonomousvision/mip-splatting.git", mip],
+        )
+        subprocess.check_call(
+            [sys.executable, "-m", "pip", "install",
+             "--no-build-isolation", "--no-deps",
+             os.path.join(mip, "submodules", "diff-gaussian-rasterization")],
+            env=env,
+        )
+
+
+_first_gpu_setup()
+try:
+    ctypes.CDLL(os.path.join(CUDA_LIBDIR, "libcudart.so.13"), mode=ctypes.RTLD_GLOBAL)
+    os.environ["LD_LIBRARY_PATH"] = CUDA_LIBDIR + os.pathsep + os.environ.get("LD_LIBRARY_PATH", "")
+except OSError:
+    pass
+
 from trellis.pipelines import TrellisImageTo3DPipeline
 from trellis.utils import render_utils
 import trimesh

requirements.txt

@@ -1,11 +1,10 @@
---extra-index-url https://download.pytorch.org/whl/cu121
-huggingface-hub==0.36.0
+huggingface-hub
 diffusers==0.35.0
 accelerate==1.2.1
 kornia==0.8.0
-timm==0.6.7
-torch==2.4.0
-torchvision==0.19.0
+timm
+torch==2.11.0
+torchvision==0.26.0
 pillow==10.4.0
 imageio==2.36.1
 imageio-ffmpeg==0.5.1
@@ -21,15 +20,8 @@ pyvista==0.44.2
 pymeshfix==0.17.0
 igraph==0.11.8
 git+https://github.com/EasternJournalist/utils3d.git@9a4eb15e4021b67b12c460c7057d642626897ec8
-xformers==0.0.27.post2
-spconv-cu120==2.3.6
+xformers
+spconv-cu126==2.3.8
 transformers==4.46.3
-gradio_litmodel3d==0.0.1
-triton==3.0.0
-nvidia-cudnn-cu12==9.1.0.70
-nvidia-nccl-cu12==2.20.5
-tokenizers==0.20.3
-spaces==0.42.1
-https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.0.post2/flash_attn-2.7.0.post2+cu12torch2.4cxx11abiFALSE-cp310-cp310-linux_x86_64.whl
-https://huggingface.co/spaces/JeffreyXiang/TRELLIS/resolve/main/wheels/diff_gaussian_rasterization-0.0.0-cp310-cp310-linux_x86_64.whl?download=true
-https://huggingface.co/spaces/JeffreyXiang/TRELLIS/resolve/main/wheels/nvdiffrast-0.3.3-cp310-cp310-linux_x86_64.whl?download=true
+einops
+spaces