new values must have the same number of points

[xuzhuang1996]

🐛 Bugs / Unexpected behaviors

I load obj file,and when I want to render it to image, I get error: new values must have the same number of points

Instructions To Reproduce the Issue:

this is my obj file: just contains a polyline:

data.zip

my core code is:

    mesh = load_objs_as_meshes([obj_filename], create_texture_atlas=False, device=device)
    
    camera = FoVOrthographicCameras(R=R, T=T, device=device, znear=XX, zfar=XX, max_x=XX, min_x=XX, max_y=XX, min_y=XX )

    raster_settings = RasterizationSettings(
        image_size=int(500),
        blur_radius=0.0,
        faces_per_pixel=10,
    )

    renderer = MeshRenderer(
        rasterizer=MeshRasterizer(
            cameras=camera,
            raster_settings=raster_settings
        ),
        shader=HardPhongShader(
            device=device,
            cameras=camera,
            lights=lights
        )
    )

    target_images = renderer(mesh) # get error

[bottler]

Can you share a stack trace? Any other details you have?

[xuzhuang1996]

Can you share a stack trace? Any other details you have?

this is full stack trace:

Traceback (most recent call last):
  File "C:\Users\Administrator\PycharmProjects\pythonProject\main.py", line 129, in <module>
    target_images = renderer(mesh)
  File "C:\ProgramData\anaconda3\envs\py39\lib\site-packages\torch\nn\modules\module.py", line 1190, in _call_impl
    return forward_call(*input, **kwargs)
  File "C:\ProgramData\anaconda3\envs\py39\lib\site-packages\pytorch3d-0.7.0-py3.9-win-amd64.egg\pytorch3d\renderer\mesh\renderer.py", line 61, in forward
    fragments = self.rasterizer(meshes_world, **kwargs)
  File "C:\ProgramData\anaconda3\envs\py39\lib\site-packages\torch\nn\modules\module.py", line 1190, in _call_impl
    return forward_call(*input, **kwargs)
  File "C:\ProgramData\anaconda3\envs\py39\lib\site-packages\pytorch3d-0.7.0-py3.9-win-amd64.egg\pytorch3d\renderer\mesh\rasterizer.py", line 219, in forward
    meshes_proj = self.transform(meshes_world, **kwargs)
  File "C:\ProgramData\anaconda3\envs\py39\lib\site-packages\pytorch3d-0.7.0-py3.9-win-amd64.egg\pytorch3d\renderer\mesh\rasterizer.py", line 208, in transform
    meshes_ndc = meshes_world.update_padded(new_verts_padded=verts_ndc)
  File "C:\ProgramData\anaconda3\envs\py39\lib\site-packages\pytorch3d-0.7.0-py3.9-win-amd64.egg\pytorch3d\structures\meshes.py", line 1426, in update_padded
    check_shapes(new_verts_padded, [self._N, self._V, 3])
  File "C:\ProgramData\anaconda3\envs\py39\lib\site-packages\pytorch3d-0.7.0-py3.9-win-amd64.egg\pytorch3d\structures\meshes.py", line 1422, in check_shapes
    raise ValueError("new values must have the same number of points.")
ValueError: new values must have the same number of points.

The other OBJ models are working properly, but this data.obj file only contains polylines, and I am not sure if this OBJ is reasonable. Normal opening in CC: