GLX and libX11

[Marco Atzeri]

On 24.01.2021 14:05, Rafał Jopek via Cygwin wrote:
> Hello,
> 
> After starting the application, the following error appears:
> 
> $ ./quad.exe
> libGL error: Windows-DRI extension not available
> libGL error: No matching fbConfigs or visuals found
> libGL error: failed to load driver: swrast
> 
>          visual 0x224 selected
> 
> An example is here:
> https://www.khronos.org/opengl/wiki/Programming_OpenGL_in_Linux:_GLX_and_Xlib
> 
> 
> 
> ---
> Thank Csaba for helping with my previous question.
> 
> Best regards
> - Rafał

it works for me,

$ ./quad.exe

         visual 0x8c selected

and it shows a multicolor plot in a new window.

Have you started the program from inside a XTerm  with a running
XServer ?