diff options
| author | Eirik Aavitsland <eirik.aavitsland@qt.io> | 2016-08-02 11:52:58 +0200 |
|---|---|---|
| committer | Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io> | 2016-08-05 14:09:36 +0000 |
| commit | ff645deb25c18eeae3d248a6a60bc2954129ee28 (patch) | |
| tree | 080835aa89b2e98019d2592e3b17003da3245224 /src/quick | |
| parent | 837c5d6284eeec8adb9b2caa3a0ce82b0da019a1 (diff) | |
Remove artifacts in font rendering
The distancefield cache did not clear the textures before using
them. Hence, random values could leak through in the edges of the
distancefields, leading to random pixels at the edges of the rendered
glyphs.
This issue was rarely visible before, because of the way the glyphs
were stacked on the textures. That stacking was changed as a result of
7190aa26f65ab97b4f54c156a107ed7748a11df5, which made the issue happen
more often, so it was detected by lancelot.
Change-Id: Ibe7a20dd7ba557ab92966e714c25a100e218ed24
Reviewed-by: Yoann Lopes <yoann.lopes@qt.io>
Diffstat (limited to 'src/quick')
| -rw-r--r-- | src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp b/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp index 728d8b6541..31275b304d 100644 --- a/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp +++ b/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp @@ -253,7 +253,8 @@ void QSGDefaultDistanceFieldGlyphCache::createTexture(TextureInfo *texInfo, int const GLenum format = GL_ALPHA; #endif - m_funcs->glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, GL_UNSIGNED_BYTE, 0); + QByteArray zeroBuf(width * height, 0); + m_funcs->glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, GL_UNSIGNED_BYTE, zeroBuf.constData()); texInfo->size = QSize(width, height); |