如何解决无法在MacOS上的python中导入opengl.gl
我正在使用OpenGL在python中渲染场景。我的代码在Windows上运行正常,但是由于某些原因,在MacOS上导入opengl.gl时遇到问题。
在python脚本和python控制台中同时调用from OpenGL.GL import ...
时会出现此问题。
更具体地说,这是我脚本中的确切调用:
from OpenGL.GL import glGenBuffers,glBindBuffer,glBufferData,\
glGenVertexArrays,glBindVertexArray,glEnableVertexAttribArray,glVertexAttribPointer,\
glDrawArrays,glUseProgram,glEnable,glDisable,\
GL_ARRAY_BUFFER,GL_STATIC_DRAW,GL_DEPTH_TEST,\
GL_FLOAT,GL_FALSE,\
GL_TRIANGLES,GL_LINES,GL_LINE_STRIP
这将导致以下错误:
Traceback (most recent call last):
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/darwin.py",line 35,in GL
return ctypesloader.loadLibrary(
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/ctypesloader.py",line 36,in loadLibrary
return _loadLibraryWindows(dllType,name,mode)
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/ctypesloader.py",line 89,in _loadLibraryWindows
return dllType( name,mode )
File "/usr/local/Cellar/python@3.8/3.8.5/Frameworks/Python.framework/Versions/3.8/lib/python3.8/ctypes/__init__.py",line 373,in __init__
self._handle = _dlopen(self._name,mode)
OSError: ('dlopen(OpenGL,10): image not found','OpenGL',None)
During handling of the above exception,another exception occurred:
Traceback (most recent call last):
File "/Users/iyadboustany/Desktop/lensmaster/Lensmaster.py",line 18,in <module>
from MainWindow import MainWindow
File "/Users/iyadboustany/Desktop/lensmaster/MainWindow.py",line 14,in <module>
from Robot import Robot
File "/Users/iyadboustany/Desktop/lensmaster/Robot.py",line 8,in <module>
from Graphics.Scene import DHNode
File "/Users/iyadboustany/Desktop/lensmaster/Graphics/Scene.py",line 13,in <module>
from OpenGL.GL import glGenBuffers,\
File "/usr/local/lib/python3.8/site-packages/OpenGL/GL/__init__.py",line 3,in <module>
from OpenGL import error as _error
File "/usr/local/lib/python3.8/site-packages/OpenGL/error.py",line 12,in <module>
from OpenGL import platform,_configflags
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/__init__.py",in <module>
_load()
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/__init__.py",line 33,in _load
plugin.install(globals())
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/baseplatform.py",line 97,in install
namespace[ name ] = getattr(self,None)
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/baseplatform.py",line 15,in __get__
value = self.fget( obj )
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/darwin.py",line 62,in GetCurrentContext
return self.CGL.CGLGetCurrentContext
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/baseplatform.py",line 45,in CGL
def CGL(self): return self.GL
File "/usr/local/lib/python3.8/site-packages/OpenGL/platform/baseplatform.py",line 41,in GL
raise ImportError("Unable to load OpenGL library",*err.args)
ImportError: ('Unable to load OpenGL library','dlopen(OpenGL,None)
注释:
- 运行glxgears效果很好。
- 我正在运行macOS Big Sur beta(20A5343i)
- 我正在使用python 3.8.5
- 我使用pip
pip3 install PyOpenGL PyOpenGL_accelerate
安装了opengl
请告知。 谢谢。
解决方法
因为我讨厌修补 Python 包的想法(加上使用 Conda 来安装所述包真的很难管理它),所以我提供这个 kludge 作为一种解决方法,直到 Python 获得它的 Big Sur(又名 Big Nuisance)更新:
try:
import OpenGL as ogl
try:
import OpenGL.GL # this fails in <=2020 versions of Python on OS X 11.x
except ImportError:
print('Drat,patching for Big Sur')
from ctypes import util
orig_util_find_library = util.find_library
def new_util_find_library( name ):
res = orig_util_find_library( name )
if res: return res
return '/System/Library/Frameworks/'+name+'.framework/'+name
util.find_library = new_util_find_library
except ImportError:
pass
,
此错误是因为Big Sur在文件系统的标准位置不再具有OpenGL库或其他系统库,而是使用缓存。 PyOpenGL使用ctypes尝试定位OpenGL库,但找不到它。在Python中修复ctypes,以便它将查找该请求请求的主题库
https://github.com/python/cpython/pull/21241
因此,将来的Python版本应该可以解决该问题。
要立即修复,您可以编辑PyOpenGL文件OpenGL / platform / ctypesloader.py更改行
fullName = util.find_library( name )
到
fullName = '/System/Library/Frameworks/OpenGL.framework/OpenGL'
,
最好改成
fullName = "/System/Library/Frameworks/{}.framework/{}".format(name,name)
否则 GLUT 将无法工作。至少,这让我再次运行 Cozmo SDK 的 3d 东西。
,仅供参考,就我而言是:
fullName = '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/OpenGL.framework/OpenGL'
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。