Development environment:
Win10 + Python 3.6 (virtual environment) + mayavi2 + pychar
Phenomenon:
This virtual environment used to work well in the past, but suddenly one day when drawing with mayavi, the following error appears:
error: in C: \ VPP \ standalone build \ VTK source \ rendering \ opengl2 \ vtkwin32openglrenderwindow.cxx, line 685
vtkWin32OpenGLRenderWindow (000001FACEF53880): failed to get wglChoosePixelFormatARB
ERROR: In C:\VPP\standalone-build\VTK-source\Rendering\OpenGL2\vtkWin32OpenGLRenderWindow.cxx, line 769
vtkWin32OpenGLRenderWindow (000001FACEF53880): failed to get valid pixel format.
ERROR: In C:\VPP\standalone-build\VTK-source\Rendering\OpenGL2\vtkOpenGLRenderWindow.cxx, line 785
vtkWin32OpenGLRenderWindow (000001FACEF53880): GLEW could not be initialized.
The program is a routine on the official website. The phenomenon is that after executing the program, if an error is reported, it exits after a few seconds.
Solution:
Consult relevant materials and initially locate the problem on environmental variables and drivers. Looking back on what I have done in recent days, I found that I have newly installed Master Lu and updated some drivers. So I tried to return the graphics card driver to the previous version, and the problem was successfully solved
the figure below shows that Master Lu has completed the rollback of the driver version
happy drawing again
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