Re: [gentoo-user] In search of an truecolor-capable terminal emulator

[Fernando Rodriguez]

On 04/26/2017 11:27 AM, tuxic@××××××.de wrote:
> On 04/26 11:17, Fernando Rodriguez wrote:
>> On 04/25/2017 10:38 PM, tuxic@××××××.de wrote:
>>> On 04/25 07:38, Floyd Anderson wrote:
>>>> On Di, 25 Apr 17:47:22 +0200
>>>> tuxic@××××××.de wrote:
>>>>> Hi,
>>>>>
>>>>> currently I am using urxvt as my standard terminal
>>>>> application, which is FAST and reliable.
>>>>> But it only emulates 24bit colors if instructed so.
>>>>> It maps 24bit rgb to 256 color using a fast but not
>>>>> total correct formula to to do (which is no critism -
>>>>> its just the way ot is implemented).
>>>>>
>>>>> I googled qyite a bit to find 24color terminal
>>>>> emulators and the one, which came closer to
>>>>> what I want is sakure.
>>>>> But comparing the speed of sakura with urxvt
>>>>> (catting a long log file twice while measureing the time
>>>>> of the second cat) it shows that sakura needs
>>>>> six times more time than urxvt.
>>>>>
>>>>> Combining this with the compile sessions, which
>>>>> are one of the core features of Gentoo ;)))...
>>>>>
>>>>> What I want is the "fastest" possible (...)
>>>>> terminal emulator supporting true color (24bit).
>>>>> I dont need fancy configuring options (two exception:
>>>>> TABS! and lightweighted) and I dont want KDE stuff (or
>>>>> any other bloated thing with thousands of dependencies...)
>>>>> I am simply using openbox.
>>>>>
>>>>> What are your experiences?
>>>>>
>>>>> Any hint is heartly welcome! Thanks !
>>>>>
>>>>> Cheers
>>>>> Meino
>>>>>
>>>>> PS: The terminal emulator dont need to be part
>>>>> of Gentoo necessarily...if it is compilable
>>>>> by a human being withoyt super powers... ;)
>>>>>
>>>> I am using rxvt-unicode also as my main terminal emulator. Its true colour
>>>> emulation bothers me also but just only a little bit.
>>>>
>>>> As a second one, xfce4-terminal runs here from time to time (seldom). A
>>>> quick time/cat test with a gcc-5.4.0 log file (approximately 25 MiB) shows
>>>> surprisingly that xfce4-terminal runs six time faster than rxvt-unicode.
>>>> Maybe one reason is that urxvt looks for URLs and email addresses to
>>>> colourising them.
>>>>
>>>> Maybe you can get a suggestion from [1].
>>>>
>>>>
>>>> References:
>>>> [1] <https://gist.github.com/XVilka/8346728>
>>>>
>>>> --
>>>> Regards,
>>>> floyd
>>>>
>>>>
>>>
>>> Hi Floyd,
>>>
>>> thanks for the informations! :)
>>>
>>> A few minutes ago I emerged xfce4-terminal and tried the
>>> cat-time-test of yesterday: 29 secondes with xfce-terminal
>>> and 5 seconds with urxvt. Hmmmm...
>>>
>>> You have got the reversed results compared with mine...
>>>
>>> What the heck slows down the output of the terminals on my
>>> Gentoo and only let urxvt shine?
>>
>> Possibly your use flags and/or openbox (if not using a GL compositor). Try
>> enabling all GL related flags for the terminal emulator and it's
>> dependencies and use a GL compositor like kwin or compiz. Modern graphics
>> cards are designed with modern software in mind. Many don't even have a 2D
>> engine anymore.
>>
>>
>>
>>>
>>> Cheers
>>> Meino
>>>
>>> PS: I found XVilka before. That's why I asked for some experiences
>>> of other users.... :)
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>> --
>>
>> Fernando Rodriguez
>>
>
> Hi Fernando,
>
> thanks for the informations! :)
>
> I am not using compiz or such....
>
> Openbox is installed as follows:
>
> [I] x11-wm/openbox
>      Available versions:  (3) 3.5.2-r1 (~)3.6 3.6.1 **9999
>        {branding debug imlib nls session startup-notification static-libs svg xdg PYTHON_TARGETS="python2_7"}
>      Installed versions:  3.6.1(3)(11:01:40 AM 02/18/2017)(nls session -branding -debug -imlib -startup-notification -static-libs -svg -xdg PYTHON_TARGETS="python2_7")
>      Homepage:            http://openbox.org/
>      Description:         A standards compliant, fast, light-weight, extensible window manager
>
> My USE_FLAGS (make.conf) are:
> USE="nvidia X lua sdl mp3 flac jack alsa gtk cairo sndfile qt3support kpathsea gif tga jpeg png jpeg2k mad dvb dvdr encode lzo bzip2 ogg sox v4l v4l2 vorbis x264 x265 zsh-completion -hal -lirc"
>
> Wpuld you suggest to change a flag?

I would start by enabling opengl globally. Then look at the dependency 
graph for the packages that you want to accelerate (especially the 
toolkits and the whole x11 stack) and if any of them have egl or gles 
and not opengl then enable it. You can't enable them all on make.conf 
because sometimes they conflict.


>
> Thanks a lot for any help in advance!
>
> Cheers
> Meino


-- 

Fernando Rodriguez