Your message dated Sat, 20 Oct 2018 14:49:43 +0000
with message-id <[email protected]>
and subject line Bug#531489: fixed in ftgl 2.3.0-1
has caused the Debian Bug report #531489,
regarding ftgl-dev: problems with bitmap fonts as textures etc.
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
531489: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=531489
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: ftgl-dev
Version: 2.1.2-3
Severity: normal
Tags: patch
Note: I'm sending this mail both to the FTGL developers as listed in
the README and to the Debian bug tracking system. The patch below
applies to version 2.1.2 (Debian etch), but AFAICS it should also
work with minor adjustments (files moved etc.) to 2.1.3~rc5.
FTGL cannot use bitmap fonts as textures (FTGLTextureFont), only as
FTGLBitmapFont. This is a problem, since unlike textures, bitmaps
cannot be rotated, scaled, etc. in OpenGL.
This applies in particular to X11 .pcf fonts. It might also apply to
Truetype fonts with embedded bitmaps. (When googling for the
problem, I found this message on the FreeType list:
http://osdir.com/ml/fonts.freetype.devel/2005-03/msg00091.html
It might refer to the same problem, so the diagnosis offered in the
reply might apply to FTGL which was used there as well.)
OpenGL textures cannot be bitmaps AFAICS, but we can convert the
bitmap to a pixmap, which is what the main part of this patch does
(FTTextureGlyph.cpp).
Also I had to adjust the bounding box computation, otherwise we have
a 0-sized bbox since FTBBox.h uses FT_Outline_Get_CBox and we have
no outline here; as a consequence, the various glyphs would overlap
and overwrite each other in the texture. With my patch, it works OK
now.
Furthermore, when trying to use a bitmap font as an FTGLPixmapFont,
it draws garbage. Of course, we could similarly convert the bitmap
to a pixmap here, but a quicker solution is to just use an
FTBitmapGlyph in FTPixmapFont. (Maybe this mixing will be considered
dirty, but at least it seems to work -- patch for FTPixmapGlyph.h,
FTPixmapGlyph.cpp, FTGLPixmapFont.cpp.)
BTW, I note that the font objects (all fonts) seem to lack some
error checking for glyphs. The glyph constructors may return with
"err" set, but the font objects do not check this. I suppose this is
the reason for the garbage drawn. I did not attempt to fix this in
other cases except as necessary for the previous item, though.
Finally, for FTGLBitmapFont objects, I would suggest to remove the
"glDisable( GL_BLEND)" call (patch to FTGLBitmapFont.cpp). Blending
bitmap fonts works well in OpenGL (when a color with alpha < 1 was
set), but this call prevents it. Removing this call leaves the
choice to the caller (who can enable or disable GL_BLEND as
preferred).
ftgl-bitmap.patch
Description: Binary data
--- End Message ---
--- Begin Message ---
Source: ftgl
Source-Version: 2.3.0-1
We believe that the bug you reported is fixed in the latest version of
ftgl, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Manuel A. Fernandez Montecelo <[email protected]> (supplier of updated ftgl
package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Sat, 20 Oct 2018 15:54:55 +0200
Source: ftgl
Binary: libftgl-dev libftgl2
Architecture: source amd64
Version: 2.3.0-1
Distribution: experimental
Urgency: medium
Maintainer: Sam Hocevar <[email protected]>
Changed-By: Manuel A. Fernandez Montecelo <[email protected]>
Description:
libftgl-dev - development files for libftgl
libftgl2 - library to render text in OpenGL using FreeType
Closes: 531489 589601 742469 760571 887712
Changes:
ftgl (2.3.0-1) experimental; urgency=medium
.
* New upstream release
- Closes: #531489, #589601, #742469, #760571
- drop patch patch-ftglgetlayoutbbox-typo.diff, applied upstream
- edit patch fix-pdf-generation to not include Makefile.in, which does
not exist in this new release, and Makefile.am which changed slightly
- refresh patch patch-relibtoolize-prep.diff
- add enable-docs.patch to build docs by default
* Add substitute-freetype-config.patch for new versions of freetype
which do not ship freetype-config (Closes: #887712)
* Add Build-Depends on pkg-config
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