Render error when running demo.py

[cenalzw]

Hi! Thank you for sharing your code! I guess that I installed the necessary environment and put SMPL models into the right path. While I experienced this error when I run the demo.py on my ssh terminal：

Traceback (most recent call last):
File "/home/zwliu/local/spin/lib/python3.6/site-packages/pyrender/platforms/pyglet.py", line 32, in init_context
width=1, height=1)
File "/home/zwliu/local/spin/lib/python3.6/site-packages/pyglet/window/xlib/init.py", line 170, in init
super(XlibWindow, self).init(*args, **kwargs)
File "/home/zwliu/local/spin/lib/python3.6/site-packages/pyglet/window/init.py", line 573, in init
display = pyglet.canvas.get_display()
File "/home/zwliu/local/spin/lib/python3.6/site-packages/pyglet/canvas/init.py", line 95, in get_display
return Display()
File "/home/zwliu/local/spin/lib/python3.6/site-packages/pyglet/canvas/xlib.py", line 119, in init
raise NoSuchDisplayException('Cannot connect to "%s"' % name)
pyglet.canvas.xlib.NoSuchDisplayException: Cannot connect to "None"

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "demo.py", line 115, in
renderer = Renderer(focal_length=constants.FOCAL_LENGTH, img_res=constants.IMG_RES, faces=smpl.faces)
File "/home/zwliu/workspace/human_3d_modeling_work/SPIN/utils/renderer.py", line 17, in init
point_size=1.0)
File "/home/zwliu/local/spin/lib/python3.6/site-packages/pyrender/offscreen.py", line 31, in init
self._create()
File "/home/zwliu/local/spin/lib/python3.6/site-packages/pyrender/offscreen.py", line 134, in _create
self._platform.init_context()
File "/home/zwliu/local/spin/lib/python3.6/site-packages/pyrender/platforms/pyglet.py", line 38, in init_context
'internal error message was "{}"'.format(e)
ValueError: Failed to initialize Pyglet window with an OpenGL >= 3+ context. If you're logged in via SSH, ensure that you're running your script with vglrun (i.e. VirtualGL). The internal error message was "Cannot connect to "None""

I have no idea to deal with that error. I will really appreciate if I can get any help. Thanks a lot !

[nkolot]

Are you using OSMesa? Or you commented out the relevant line as suggested here?

[cenalzw]

@nkolot Thanks for your answer, I already fix this issue by following the right installation instructions.

[ikvision]

As an alternative to SPIN virtual_env one can use VIBE virtual_env:
https://github.com/mkocabas/VIBE/blob/master/install_pip.sh
and use
os.environ['PYOPENGL_PLATFORM'] = 'egl'
To run SPIN demo.py with rendering

[Jumponthemoon]

@nkolot Thanks for your answer, I already fix this issue by following the right installation instructions.

You mean install the OpenGL？How did you do the right installation?

[Vincent-2017]

As an alternative to SPIN virtual_env one can use VIBE virtual_env:
https://github.com/mkocabas/VIBE/blob/master/install_pip.sh
and use
os.environ['PYOPENGL_PLATFORM'] = 'egl'
To run SPIN demo.py with rendering

It is not useful for me