X-Authentication-Warning:	delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient:	geda-user AT delorie DOT com
Date:	Tue, 28 Jul 2015 12:07:06 +0200 (CEST)
From:	Roland Lutz <rlutz AT hedmen DOT org>
To:	"Gabriel Paubert (paubert AT iram DOT es) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject:	Re: [geda-user] pcb-rnd feature poll: please vote
In-Reply-To:	<20150728080646.GA5657@visitor2.iram.es>
Message-ID:	<alpine.DEB.2.11.1507281159110.1941@nimbus>
References:	<alpine DOT DEB DOT 2 DOT 00 DOT 1507251201460 DOT 6924 AT igor2priv> <mp08rt$85h$1 AT ger DOT gmane DOT org> <alpine DOT DEB DOT 2 DOT 00 DOT 1507270806340 DOT 6924 AT igor2priv> <20150727081159 DOT GA31594 AT visitor2 DOT iram DOT es> <alpine DOT DEB DOT 2 DOT 00 DOT 1507271023590 DOT 6924 AT igor2priv> <20150727105941 DOT GB31438 AT visitor2 DOT iram DOT es>
	<alpine DOT DEB DOT 2 DOT 00 DOT 1507280520260 DOT 6924 AT igor2priv> <201507280343 DOT t6S3h30L002281 AT envy DOT delorie DOT com> <alpine DOT DEB DOT 2 DOT 00 DOT 1507280557040 DOT 6924 AT igor2priv> <20150728080646 DOT GA5657 AT visitor2 DOT iram DOT es>
User-Agent:	Alpine 2.11 (DEB 23 2013-08-11)
MIME-Version:	1.0
Reply-To:	geda-user AT delorie DOT com
Errors-To:	nobody AT delorie DOT com
X-Mailing-List:	geda-user AT delorie DOT com
X-Unsubscribes-To:	listserv AT delorie DOT com

On Tue, 28 Jul 2015, Gabriel Paubert (paubert AT iram DOT es) [via geda-user AT delorie DOT com] wrote:
> I don't have any pcb with non-gl gtk installed,
> but on my (old) desktop, with a maximized 1920x1200
> window, and viewing the whole board, the results are:
>
> A simple, small (40x25mm), 2 layers board with 33 components:
> pcb lesstif:  5.1 redraws per second
> pcb gtk+gl:  31.1 redraws per second
>
> A complex, large (200x80mm), 6 layers board with
> almost 700 components:
> pcb lesstif:  1.3 redraws per second
> pcb gtk+gl:   4.6 redraws per second

The point about using OpenGL is that, with modern techniques, drawing can 
be optimized enormously.  When comparing the task of rendering a PCB with 
what current games do, I believe that a render time of <10ms should be 
possible even with the most complex board.  The fact that PCB uses OpenGL 
doesn't mean that PCB actually employs these optimizations, though.

Roland

- Raw text -