search

Maximus5 / conemu-old-issues

Old issues imported from googlecode. Project was moved to
https://conemu.github.io
6 stars 1 forks source link

Implement Directwrite rendering #1074

Open Maximus5 opened 9 years ago

Maximus5 commented 9 years ago

Originally reported on Google Code with ID 1074

Required information!
OS version: Win8   SP   x64
ConEmu version: ?
Far version (if you are using Far Manager): No

Implementing DirectWrite for screen rendering. See http://msdn.microsoft.com/en-us/library/windows/desktop/dd368038(v=vs.85).aspx

Reported by MohamadAAM on 2013-05-18 21:06:16

Maximus5 commented 9 years ago 
Profit?

Reported by ConEmu.Maximus5 on 2013-05-18 21:08:19

Maximus5 commented 9 years ago 
It is the best anti-aliasing method on windows better than subpixel or grayscale. Check
out sublime text with the setting enabled 
"font_options": ["directwrite"]

Reported by MohamadAAM on 2013-05-19 01:26:40

Maximus5 commented 9 years ago 
I'm not using Sublime, so it would be nice if you provide two screenshots for comparison:
1. With directwrite output
2. GDI output with cleartype ON

Reported by ConEmu.Maximus5 on 2013-05-20 07:33:34

Maximus5 commented 9 years ago 
I attached the comparison of Sublime Text 2 with directwrite on and off using font Source
Code Pro. Also added a screenshot how it currently looks like in ConEmu. I too would
like to see DirectWrite or better font rendering implemented in ConEmu as well. Thank
you!

Reported by tolanri on 2013-07-01 13:51:59

Maximus5 commented 9 years ago 
@tolanri: first & last pic is NOT ClearType but plain grayscale anti-aliasing - so it
is not for a comparison.

I made a correct comparison for the perfectionists. A PDF version also included: just
switch upper layer on/off. (use a 400% zoom to establish that these screen-shots ARE
different)

DirectWire would be used to support fractional font sizes :)

Reported by nanofoxxx on 2013-07-04 07:11:43

Maximus5 commented 9 years ago 
@nanofo
Thanks for the comparison. On my system the difference is much more evident. Actually
I just tried doing the same experiment on my system, however, after I copy them into
photoshop the differences are rendered away? Very strange.

Reported by MohamadAAM on 2013-07-04 08:10:51

Maximus5 commented 9 years ago 
Hmm, how did you enable cleartype in sublime text? I only enabled Cleartype in controls
panel. Do I need to do anything else?

I made my comparisons by adding and removing line 

"font_options": [ "directwrite" ],

from my Sublime text 2 preferences.

Your comparsion is pretty good, difference is negligible. If it worked that way for
rendering my font (Source Code Pro) in ConEmu I'd be happy with that...

May I suggest to try to make another comparison with other font, like already mentioned
Adobe Source Code Pro (available for download for free at http://sourceforge.net/projects/sourcecodepro.adobe/
) and see how it works there?

I'm not really concerned about anti-aliasing itself, both sublime text and ConEmu do
good job at it. But in case of Source Code Pro, it also affect proportions of the font
(I don't know why) and it looks just so much better with DirectWrite on. Just look
at the animated comparison picture I attached below (make sure to download the file,
else animation doesn't work for some reason at least on Firefox)

Reported by tolanri on 2013-07-04 08:49:53

Maximus5 commented 9 years ago 
@all: notice that DirectWire will render fonts in a different height - God knows why.
I having a very special font made for myself with an absolutely well-defined (pixel-aligned)
width - but DirecWrite renders BOLDER than I intended (!). ...WHY??? For the sake of
God, this font is rendered just so perfectly/as_intented under ClearType.

For reference, my system is a plain Windows7 with a nice videocard Nvidia GTX G460,
cleartype enabled (by default).

You guys maybe using a card with poor HW-accelerated alti-aliasing while DirectEire
using a correct SW solution (?)

@MohamadAAM: "On my system the difference is much more evident": I will examine situation
on other videocards (older nVidia and Matrod G450).

"after I copy them into Potoshop the differences are rendered away?" - sorry, English
is not my native language and I not really understand what this sentence wants to express
:( Please redefine for me :)

I using keyboard key PRINT/Alt-PRINT to take a screenshot then I using Ctrl-N then
Ctrl-V in PhotoShop.

@tolanri: "Hmm, how did you enable cleartype in sublime text?" - I using "font_options:
["subpixel_antialias"]" to achive ClearType but I think this is the default for SublimeText.
Take in account that I pointed out that Your last pic You attached on Jul.1 also uses
grayscale aliased TOO, so this seems to be an OS-related "problem" (!).

"...make another comparison with other font, like already mentioned Adobe Source Code
Pro" - I tried to do comparison with that font just for You - am I failed???

Reported by nanofoxxx on 2013-07-07 22:35:08

Maximus5 commented 9 years ago 
The killer feature of directwrite is it's automatic glyph substitution.

Reported by meurglys3 on 2014-05-26 16:47:38