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From:	William Mitchell <wfmacmd AT gmail DOT com>
Date:	Thu, 5 Jul 2018 21:16:40 -0400
Message-ID:	<CAL_Y+kxsVEdfRw64V=5p6a2=LjxEUPHySKueMB0irCHb=ociLw@mail.gmail.com>
Subject:	Re: octave says WGL_ARB_multisample is missing
To:	The Cygwin Mailing List <cygwin AT cygwin DOT com>
X-IsSubscribed:	yes

I'm afraid that didn't help any.  Now both glxinfo and octave print nothing
and return to the shell prompt almost immediately.  For octave, this
includes no output when I run a .m script that usually prints quite a bit
before starting the graphics.  xeyes still runs, though.

Thanks for trying,
Bill

On 2 July 2018 at 13:13, Jon Turney <jon DOT turney AT dronecode DOT org DOT uk> wrote:

> On 02/07/2018 13:48, William Mitchell wrote:
>
>> prompt> glxinfo
>> name of display: localhost:0.0
>> libGL error: required WGL extension WGL_ARB_multisample is missing
>> libGL error: required WGL extension WGL_ARB_multisample is missing
>> Error: couldn't find RGB GLX visual or fbconfig
>>
>
> Thanks.  This is interesting.
>
> It seems that your graphics card doesn't support WGL_ARB_multisample, but
> does support WGL_ARB_framebuffer_sRGB, which seems a bit unusual.
>
> I've built an libGL1 with a change to handle this situation better [1]
>
> If you download that, chmod +x it, and replace /usr/bin/cygGL-1.dll with
> it (keep a copy of the existing version), you can try 'glxinfo' and
> plotting with octave, to see if it improves things.
>
> [1] ftp://cygwin.com/pub/cygwinx/x86_64/cygGL-1.dll
>
>
> --
> Jon Turney
> Volunteer Cygwin/X X Server maintainer
>

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