error on wwindows 10: ImportError: ('Unable to load OpenGL library', "Could not find module 'OSMesa' (or one of its dependencies).

[linhcentrio]

(D:\Talking_head\MultiTalk-Code\venv) D:\Talking_head\MultiTalk-Code>scripts\demo.bat multi
Traceback (most recent call last):
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform\osmesa.py", line 22, in GL
return ctypesloader.loadLibrary(
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform\ctypesloader.py", line 45, in loadLibrary
return dllType( name, mode )
File "D:\Talking_head\MultiTalk-Code\venv\lib\ctypes_init_.py", line 373, in init
self._handle = _dlopen(self._name, mode)
FileNotFoundError: ("Could not find module 'OSMesa' (or one of its dependencies). Try using the full path with constructor syntax.", 'OSMesa', None)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "main\demo_dir.py", line 24, in
import pyrender
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\pyrender_init_.py", line 3, in
from .light import Light, PointLight, DirectionalLight, SpotLight
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\pyrender\light.py", line 10, in
from OpenGL.GL import *
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\GL_init_.py", line 3, in
from OpenGL import error as _error
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\error.py", line 12, in
from OpenGL import platform, configflags
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform_init.py", line 35, in
load()
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform_init.py", line 32, in _load
plugin.install(globals())
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform\baseplatform.py", line 92, in install
namespace[ name ] = getattr(self,name,None)
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform\baseplatform.py", line 14, in get
value = self.fget( obj )
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform\osmesa.py", line 66, in GetCurrentContext
function = self.OSMesa.OSMesaGetCurrentContext
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform\baseplatform.py", line 14, in get
value = self.fget( obj )
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform\osmesa.py", line 60, in OSMesa
def OSMesa( self ): return self.GL
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform\baseplatform.py", line 14, in get
value = self.fget( obj )
File "D:\Talking_head\MultiTalk-Code\venv\lib\site-packages\OpenGL\platform\osmesa.py", line 28, in GL
raise ImportError("Unable to load OpenGL library", *err.args)
ImportError: ('Unable to load OpenGL library', "Could not find module 'OSMesa' (or one of its dependencies). Try using the full path with constructor syntax.", 'OSMesa', None)

[linhcentrio]

i search this: https://github.com/pal1000/mesa-dist-win

[mor-panjaya]

For me it was fixed after the following installations (see: mmatl/pyrender#32):

• sudo apt install freeglut3-dev
• sudo apt-get install libosmesa6-dev