[PyQt] Error: Failed to load opengl32sw.dll

[Phil Thompson]

Those OpenGL DLLs are identical in the 5.13.2 and the 5.14.1 wheels. 
Obviously we have already established that the 140 DLLs are not.

On 10/02/2020 15:01, Zhao Lee wrote:
> I copied libEGL.dll, libGLESv2.dll,opengl32sw.dll  and
> d3dcompiler_*.dll to the directory my pyqt5 program resides in,  then
> replace all DLLs with the name containing "140" in
> C:\Users\i\AppData\Local\Programs\Python\Python36-32\Lib\site-packages\PyQt5\Qt\bin
> with those packed with shiboken2, then the issue gone.
> 
> 
> 
> 
> 
> 
> 
> 
> At 2020-02-10 20:32:21, "Phil Thompson" <phil at riverbankcomputing.com> 
> wrote:
>> Yes, and as before, you will have to do some more investigation as
>> nobody else has reported a problem.
>> 
>> 
>> On 10/02/2020 12:07, Zhao Lee wrote:
>>> Yes, but it seems PyQt5 is unaware of those DLLs, so caused the 
>>> problem
>>> 
>>> 在 2020-02-10 18:23:57，"Phil Thompson" <phil at riverbankcomputing.com> 
>>> 写道：
>>>> On 10/02/2020 05:03, Zhao Lee wrote:
>>>>> Got the following error  with :Python 3.7.4, lateset pyqt5 and
>>>>> PyQtWebEngine, on win10 32bit.
>>>>> As I've said in the last "QtWebEngineProcess.exe – Bad Image” 
>>>>> thread,
>>>>> version 5.13.2 of pyqt5 and PyQtWebEngine do not suffer the 
>>>>> problem.
>>>>> 
>>>>> 
>>>>> Failed to load opengl32sw.dll (�Ҳ���ָ����ģ�顣)
>>>>> 
>>>>> Failed to load and resolve WGL/OpenGL functions
>>>>> 
>>>>> qt.qpa.gl: Software OpenGL failed. Falling back to system OpenGL.
>>>>> 
>>>>> Failed to load opengl32sw.dll (�Ҳ���ָ����ģ�顣)
>>>>> 
>>>>> Failed to load and resolve WGL/OpenGL functions
>>>>> 
>>>>> qt.qpa.gl: Software OpenGL failed. Falling back to system OpenGL.
>>>>> 
>>>>> Failed to load opengl32sw.dll (�Ҳ���ָ����ģ�顣)
>>>>> 
>>>>> Failed to load and resolve WGL/OpenGL functions
>>>>> 
>>>>> qt.qpa.gl: Software OpenGL failed. Falling back to system OpenGL.
>>>>> 
>>>>> Failed to load opengl32sw.dll (�Ҳ���ָ����ģ�顣)
>>>>> 
>>>>> Failed to load and resolve WGL/OpenGL functions
>>>>> 
>>>>> qt.qpa.gl: Software OpenGL failed. Falling back to system OpenGL.
>>>>> 
>>>>> Failed to create OpenGL context for format QSurfaceFormat(version
>>>>> 2.0,
>>>>> options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24,
>>>>> redBufferSize -1, greenBufferSize -1, blueBufferSize -1,
>>>>> alphaBufferSize -1, stencilBufferSize 8, samples 0, swapBehavior
>>>>> QSurfaceFormat::DefaultSwapBehavior, swapInterval 1, colorSpace
>>>>> QSurfaceFormat::DefaultColorSpace, profile
>>>>> QSurfaceFormat::NoProfile)
>>>>> .
>>>>> 
>>>>> This is most likely caused by not having the necessary graphics
>>>>> drivers installed.
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> Install a driver providing OpenGL 2.0 or higher, or, if this is not
>>>>> possible, make sure the ANGLE Open GL ES 2.0 emulation libraries
>>>>> (libEGL.dll, libGLESv2.dll and d3dcompiler_*.dll) are available in
>>>>> the
>>>>> application executable's directory or in a location listed in PATH.
>>>> 
>>>> All of those DLLs are included in the wheel.
>>>> 
>>>> Phil