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Re: [ft-devel] PDF text rendering error

From: suzuki toshiya
Subject: Re: [ft-devel] PDF text rendering error
Date: Mon, 11 Jun 2012 15:24:57 +0900
User-agent: Mozilla-Thunderbird (X11/20080406)

I had ever registered NEC FA fonts as the tricky hinting fonts,
on 2011/Apr/30. However, it seems that the fonts embedded in the
documents were newer than that I registered.

# The registered fonts in my hands have no English familyname,
# (thus, FA-Gothic names cannot enable switch the tricky hinting
# fallback!) and their copyrights were dated as 1995,1996. But
# the fonts in the sample documents are dated as 1995-1998.

I will update the registry of the tricky hinting fonts.


suzuki toshiya wrote:
Some fonts embedded in the document look like the NEC FA fonts
that I had ever registered as the tricky hinting fonts.
I will check, please wait a while.


Johnson Y. Yan wrote:
Do you mean the font must be rendered use TT_CONFIG_OPTION_BYTECODE_INTERPRETER? I open it, but still render error.


int load_flags = (m_Face->face_flags & FT_FACE_FLAG_SFNT) ? FT_LOAD_NO_BITMAP :
int error = FT_Load_Glyph(m_Face, glyph_index, load_flags);

Johnson Y. Yan

发件人: Werner LEMBERG
发送时间: 2012-06-08 06:18:52
收件人: yinsen_yan
抄送: freetype-devel
主题: Re: PDF text rendering error

I render the pdf text use freetype, but it is different with adobe
acrobat shows, is there anyone can analyze the reason?
The font in question must be rendered with TrueType hinting, otherwise
it produces the bad results you get.  For example, ghostscript 9.05 is
doing this.  Simply try to view the document with gv.


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