Re: speed of qt terminal

[Tatsuro M. <tma...@ya...>]

----- Original Message -----

> From: Tatsuro MATSUOKA 
> To: tmacchant3 Daniel J Sebald 
> Cc: gnuplot-beta> Date: 2015/6/27, Sat 13:13
> Subject: Re: speed of qt terminal
> 
> ----- Original Message -----

<snip>

> Ubuntu 14.04 (LTS) amd64, Qt 4.8.5, nvidia-304
> 
> Qt QT_GRAPHICSSYSTEM non-specified a litte bit slow
> QT_GRAPHICSSYSTEM=raster normal almost the same as X11
> QT_GRAPHICSSYSTEM=opengl does not work
> 
> X11 normal
> wxt rather faster than qt and x11
> 
> Perhaps speed of qt on this test depends strongly environments.
> 
> Tatsuro


I have rebuilt gnuplot-5.1 with qt5 (qt5.2.1) on Ubuntu 14.04 amd64. 
QT_GRAPHICSSYSTEM has no mean on qt5

Test
splot 'blutux.rgb' binary array=(128,128) flipy format='%uchar' using 1:2:3 with rgbimage 

I cannot test quantitatively. 
To be honest qualitatively I cannot feel distinguishable differences 
on mouse operation of a plot between three terminals (qt, wxt, and x11).

Perhaps this is due to my PC is rather old. 
(The nvidia driver version is 304.)

Tatsuro