[Python] eglInitialize failed with EGL_NOT_INITIALIZED

I am trying to run a 3D human model generator, where EGL is used. When I run the following code:

import OpenGL.EGL as egl
from ctypes import pointer

egl_display = egl.eglGetDisplay(egl.EGL_DEFAULT_DISPLAY)
print(egl_display)

major, minor = egl.EGLint(), egl.EGLint()
print(major, minor)

egl.eglInitialize(egl_display, pointer(major), pointer(minor))


the output of the above code is as follows:

#################### the first two print info ####################
<OpenGL._opaque.EGLDisplay_pointer object at 0x7f480e971940>
c_int(0) c_int(0)

#################### error ####################
Traceback (most recent call last):
File "main.py", line 10, in <module>
egl.eglInitialize(egl_display, pointer(major), pointer(minor))
File "/data_HDD/zhuxingyu/anaconda3/envs/icon/lib/python3.8/site-packages/OpenGL/platform/baseplatform.py", line 415, in __call__
return self( *args, **named )
File "src/errorchecker.pyx", line 58, in OpenGL_accelerate.errorchecker._ErrorChecker.glCheckError
OpenGL.raw.EGL._errors.EGLError: EGLError(
err = EGL_NOT_INITIALIZED,
baseOperation = eglInitialize,
cArguments = (
<OpenGL._opaque.EGLDisplay_pointer object at 0x7f480e971940>,
<OpenGL.raw.EGL._types.LP_c_int object at 0x7f480e971ac0>,
<OpenGL.raw.EGL._types.LP_c_int object at 0x7f480e971b40>,
),
result = 0
)


I'm unfamiliar to EGL and really confused about this error, and here's the information of my machine:

• 5 NVIDIA GeForce GPU with CUDA 11.4 and Driver version 470.82.00 (get it from nvidia-smi)
• have libegl1 installed and have the following *.so files under /usr/lib/x86_64-linux-gnu/

/usr/lib/x86_64-linux-gnu/libEGL_mesa.so.0
/usr/lib/x86_64-linux-gnu/libEGL_mesa.so.0.0.0
/usr/lib/x86_64-linux-gnu/libEGL_nvidia.so.0
/usr/lib/x86_64-linux-gnu/libEGL_nvidia.so.470.82.00
/usr/lib/x86_64-linux-gnu/libEGL.so
/usr/lib/x86_64-linux-gnu/libEGL.so.1
/usr/lib/x86_64-linux-gnu/libEGL.so.1.0.0

• I'm running the code using vscode remote-ssh, i.e. I'm working on machine A, while the code is actually running on machine B. All the machine information above is about machine B.

What else do I need to make eglInitialize run normally?

Continue reading...