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[Windows] DirectWrite rendering does not use subpixel antialiasing #1537

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nyanpasu64 opened this issue Dec 16, 2016 · 4 comments
Closed

[Windows] DirectWrite rendering does not use subpixel antialiasing #1537

nyanpasu64 opened this issue Dec 16, 2016 · 4 comments
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@nyanpasu64
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nyanpasu64 commented Dec 16, 2016 •
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Summary

When I add "font_options": ["directwrite"] to my settings, Sublime Text renders all text using grayscale antialiasing. Only "gdi" uses subpixel antialiasing.

Expected behavior

DirectWrite renders with subpixel antialiasing. Taking a screenshot of white text, then zooming in, will reveal colors.

Actual behavior

DirectWrite renders with grayscale antialiasing.

Steps to reproduce

  1. Menu -> Preferences -> Settings.
  2. Add the option, "font_options": ["directwrite"],
  3. (Optional) "font_options": ["directwrite", "subpixel_antialias"], does not fix the issue.

Note: "font_options": ["gdi"], works.

Environment

  • Operating system and version: Windows 10 x64
  • Sublime Text: x64, Build 3126
@vovkkk
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vovkkk commented Dec 17, 2016

Might be related #905
FWIW, on my Win8 it is definitely not greyscale, but surely it does not use/respect system settings of ClearType.

@FichteFoll
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FichteFoll commented Dec 19, 2016 •
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Works for me on Windows 10:

2016-12-19_12-31-13_sublime_text

Please share a screenshot of how it is rendered for you.

@nyanpasu64
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nyanpasu64 commented Dec 29, 2016 •
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I think there's something wrong with my system, causing the default ClearType level to be set to 0. Breaks Firefox unless I manually set the ClearType level = 80 (minimizes fringing for me).

Does anyone have the same issue? If so, does Firefox also lack ClearType for fonts other than Arial/Verdana/Georgia/SegoeUI...?

@nyanpasu64
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nyanpasu64 commented Jan 1, 2017 •
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Bug fixed: Open regedit, go to HKEY_CURRENT_USER\SOFTWARE\Microsoft\Avalon.Graphics\<displayName>, and delete all folders with CleartypeLevel=0.

https://msdn.microsoft.com/en-us/library/aa970267.aspx

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@nyanpasu64 @FichteFoll @vovkkk