module 'pyglet.gl' has no attribute 'xlib'

[cosw0t]

With the new version 0.1.40 on windows (and possibly macOS, haven't tested) the offscreen renderer fails with:

Traceback (most recent call last):
  File "[...]/scratch_1.py", line 18, in <module>
    renderer.render(scene)
  File "C:\tools\Anaconda3\envs\tra-sim-datacollection\lib\site-packages\pyrender\offscreen.py", line 109, in render
    self._platform.make_uncurrent()
  File "C:\tools\Anaconda3\envs\tra-sim-datacollection\lib\site-packages\pyrender\platforms\pyglet_platform.py", line 54, in make_uncurrent
    pyglet.gl.xlib.glx.glXMakeContextCurrent(self._window.context.x_display, 0, 0, None)
AttributeError: module 'pyglet.gl' has no attribute 'xlib'

Process finished with exit code 1

Old versions <= 0.1.39 were fine

Sample code:

from pyrender import Mesh, Scene, OffscreenRenderer, PerspectiveCamera, RenderFlags
from io import BytesIO
import numpy as np
import trimesh
import requests

duck_source = "https://github.com/KhronosGroup/glTF-Sample-Models/raw/master/2.0/Duck/glTF-Binary/Duck.glb"

duck = trimesh.load(BytesIO(requests.get(duck_source).content), file_type='glb')
duckmesh = Mesh.from_trimesh(list(duck.geometry.values())[0])
scene = Scene(ambient_light=np.array([1.0, 1.0, 1.0, 1.0]))
scene.add(duckmesh)

camera = PerspectiveCamera(60)
scene.add(camera)

renderer = OffscreenRenderer(640, 480)
renderer.render(scene)

[mariabauza]

We are having the same issue

[cosw0t]

any input on this @mmatl ?

[ccuetoh]

Changing line 53 in pyglet_platform.py to import pyglet.gl.xlib seems to fix it. I have a terrible internet connection so I'm unable to make a pull request, but feel free to make it yourself.

[cosw0t]

Thanks for the advice, however this now results in another error:

  File "C:\tools\Anaconda3\envs\python_utils\lib\site-packages\pyrender\platforms\pyglet_platform.py", line 53, in make_uncurrent
    import pyglet.gl.xlib
  File "C:\tools\Anaconda3\envs\python_utils\lib\site-packages\pyglet\gl\xlib.py", line 40, in <module>
    from pyglet.canvas.xlib import XlibCanvas
  File "C:\tools\Anaconda3\envs\python_utils\lib\site-packages\pyglet\canvas\xlib.py", line 43, in <module>
    from . import xlib_vidmoderestore
  File "C:\tools\Anaconda3\envs\python_utils\lib\site-packages\pyglet\canvas\xlib_vidmoderestore.py", line 54, in <module>
    from pyglet.libs.x11 import xlib
  File "C:\tools\Anaconda3\envs\python_utils\lib\site-packages\pyglet\libs\x11\xlib.py", line 53, in <module>
    _lib = pyglet.lib.load_library('X11')
  File "C:\tools\Anaconda3\envs\python_utils\lib\site-packages\pyglet\lib.py", line 164, in load_library
    raise ImportError('Library "%s" not found.' % names[0])
ImportError: Library "X11" not found.

Process finished with exit code 1

I think xlib is not meant to be used in Windows in the first place

[ccuetoh]

Yup, it looks like you're right: XLib is not meant to be used on Windows. Looking at all the other pyglet.gl.xlib calls they are all done using a try block as they may be unsupported. I must say though that I'm a complete noob on XLib, so don't take my word for it.

As far as I can see make_uncurrent() is a cleanup operation to allow for multi-threading. If you don't care for it you can give it the same try-block treatment as other xlib calls:

def make_uncurrent(self):
    try:
        import pyglet.gl.xlib
        pyglet.gl.xlib.glx.glXMakeContextCurrent(self._window.context.x_display, 0, 0, None)
    except:
        pass

I've done a couple of tests and everything works on my side.

[cosw0t]

That makes a lot of sense. Somehow i thought there should be a platform-dependent version that mirrors glXMakeContextCurrent for wgl, egl, etc.

thanks

see request #124

[awarn314]

did this ever get resolved? I still get the error "AttributeError: module 'pyglet.gl' has no attribute 'xlib'" when using the example file.