diff options
| author | Caolán McNamara <caolanm@redhat.com> | 2019-09-04 10:57:06 +0100 |
|---|---|---|
| committer | Caolán McNamara <caolanm@redhat.com> | 2019-09-04 13:45:10 +0200 |
| commit | df4a6f977843dbf4eb8bb5998b090d92c454611b (patch) | |
| tree | 62331cf1d820907c6d8baa4d870c469acb9bb449 /vcl/inc | |
| parent | 4b3a648a2fd7d733674f95bb7f20670c57e99252 (diff) | |
tdf#127189 FreeType <= 2.8 will fail to render stretched horizontal brace...
glyphs in starmath at a fairly low stretch ratio. The failure will set
CAIRO_STATUS_FREETYPE_ERROR on the surface which cannot be cleared, so all
further painting to the surface fails.
This appears fixed in 2.9 with
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=91015cb41d8f56777f93394f5a60914bc0c0f330
"Improve complex rendering at high ppem"
Change-Id: I8cbf8347ccd29beda4057b14f2e68678f6030bf4
Reviewed-on: https://gerrit.libreoffice.org/78587
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
Diffstat (limited to 'vcl/inc')
| -rw-r--r-- | vcl/inc/unx/glyphcache.hxx | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/vcl/inc/unx/glyphcache.hxx b/vcl/inc/unx/glyphcache.hxx index 0331d7e9f86e..ccb25cab87e2 100644 --- a/vcl/inc/unx/glyphcache.hxx +++ b/vcl/inc/unx/glyphcache.hxx @@ -117,6 +117,13 @@ public: FreetypeFontInstance* GetFontInstance() const { return mpFontInstance.get(); } void SetFontVariationsOnHBFont(hb_font_t* pHbFace) const; + + // tdf#127189 FreeType <= 2.8 will fail to render stretched horizontal brace glyphs + // in starmath at a fairly low stretch ratio. This appears fixed in 2.9 with + // https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=91015cb41d8f56777f93394f5a60914bc0c0f330 + // "Improve complex rendering at high ppem" + static bool AlmostHorizontalDrainsRenderingPool(); + private: friend class GlyphCache; friend class FreetypeFontInstance; |