fltk does not work on cygwin version octave-6.4.0

[Jon Turney]

On 23/06/2022 00:05, Tatsuro MATSUOKA wrote:
> 
> [132545.312] (II) AIGLX: Testing pixelFormatIndex 2
> [132545.343] GL_VERSION:     1.1.0
> [132545.343] GL_VENDOR:      Microsoft Corporation
> [132545.343] GL_RENDERER:    GDI Generic
> [132545.343] wglwrap: Can't resolve "wglGetExtensionsStringARB"
> [132545.343] (EE) AIGLX: Won't use the generic native renderer as it is not accelerated
> [132545.343] glWinSelectGLimplementation: Loaded 'cygGL-1.dll'
> [132548.078] (II) IGLX: Loaded and initialized swrast
> [132548.078] (II) GLX: Initialized DRISWRAST GL provider for screen 0
> 

Usually, this is what happens when the driver your graphics chipset 
isn't installed, it's just working in 'VGA mode'.

(Everything should still work, using the software OpenGL renderer, as if 
the X server was started with -nowgl)

But this doesn't seem to be the case, if a native Windows octave can 
find the hardware OpenGL renderer, which is a bit confusing.

Can you show the output of 'wglinfo'?