X-Recipient:	archive-cygwin AT delorie DOT com
X-Original-To:	cygwin AT cygwin DOT com
Delivered-To:	cygwin AT cygwin DOT com
DMARC-Filter:	OpenDMARC Filter v1.4.1 sourceware.org 83F083857415
Authentication-Results:	sourceware.org;
	dmarc=fail (p=none dis=none) header.from=nifty.ne.jp
Authentication-Results:	sourceware.org; spf=fail smtp.mailfrom=nifty.ne.jp
DKIM-Filter:	OpenDKIM Filter v2.10.3 conssluserg-02.nifty.com 25L9iftO012952
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.ne.jp;
	s=dec2015msa; t=1655804681;
	bh=kfalwV88aciW4VcaiC2cKQhkQaKnJOWvEBqOEnyoB6I=;
	h=Date:From:To:Cc:Subject:In-Reply-To:References:From;
	b=yBNJ18xbP2oe53HaAesTFNQrq5mTTdQa06m8PgTDhgGyRlALfpp94ANKsEWrQaCBZ
	NCMYgxU8A9gbgSAYNB+hEMuoeYGRTU9p6imPdOP/wCHkOTa0AlQpEGkju5UdICVpNz
	5Cca3oFQLKuxh/E9RgL8q++jQTPKxiUQBWY8TwBk3b906EmhR5k0j9baKB0DV2a4To
	h4G1DSEmXHxeN0tWUpkFYT2XQ4f/yP7Xu0Wip6jKBeyHm8WcfcQ10UIzth6z6UFyu6
	h74NN/vTi/w7twmJkjunA0JOZuWPt8hlsRi+E1KBs/laMKMjU6XG48eTjkQ+CnYuNr
	MoGZQscgBrDEQ==
X-Nifty-SrcIP:	[119.150.44.95]
Date:	Tue, 21 Jun 2022 18:44:41 +0900
From:	Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
To:	cygwin AT cygwin DOT com
Subject:	Re: fltk does not work on cygwin version octave-6.4.0
Message-Id:	<20220621184441.3cb63f4b7df9c1f68d114878@nifty.ne.jp>
In-Reply-To:	<1014671988.1220984.1655788512175.JavaMail.yahoo@mail.yahoo.co.jp>
References:	<1014671988 DOT 1220984 DOT 1655788512175 DOT JavaMail DOT yahoo DOT ref AT mail DOT yahoo DOT co DOT jp>
	<1014671988 DOT 1220984 DOT 1655788512175 DOT JavaMail DOT yahoo AT mail DOT yahoo DOT co DOT jp>
X-Mailer:	Sylpheed 3.7.0 (GTK+ 2.24.30; i686-pc-mingw32)
Mime-Version:	1.0
X-Spam-Status:	No, score=-4.4 required=5.0 tests=BAYES_00, DKIM_SIGNED,
	DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, KAM_NUMSUBJECT, NICE_REPLY_A,
	RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP,
	T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6
X-Spam-Checker-Version:	SpamAssassin 3.4.6 (2021-04-09) on
	server2.sourceware.org
X-BeenThere:	cygwin AT cygwin DOT com
X-Mailman-Version:	2.1.29
List-Id:	General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Unsubscribe:	<https://cygwin.com/mailman/options/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=unsubscribe>
List-Archive:	<https://cygwin.com/pipermail/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe:	<https://cygwin.com/mailman/listinfo/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
Cc:	Tatsuro MATSUOKA <matsuoka AT nuce DOT nagoya-u DOT ac DOT jp>
Errors-To:	cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com
Sender:	"Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>

On Tue, 21 Jun 2022 14:15:12 +0900 (JST)
Tatsuro MATSUOKA wrote:
> fltk does not work on cygwin version octave-6.4.0
> 
> octave:1> graphics_toolkit fltk
> octave:2> plot(1:10);
> Insufficient GL support
> error: unable to plot due to insufficient OpenGL support
> 
> plot windows flashes and disappear immediately

I guess it depends on GPU. What GPU do you use?
It almost works in my environment except for that it needs
'Reset Figure' to draw. Without 'Reset figure', the plot area
is filled gray. My GPU is GeForce GTX 750 Ti.

Did you try LIBGL_ALWAYS_SOFTWARE=1 ?

-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>

-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple

- Raw text -