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author | Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io> | 2020-08-12 09:27:03 +0200 |
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committer | Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io> | 2020-08-17 07:09:31 +0200 |
commit | cbbbfe3bff29d8db84771e07ac6f16209b0969d1 (patch) | |
tree | a37c1a23cadc6ae6a0d8e367d0b582768e943e6a /src/quick/scenegraph/qsgadaptationlayer.cpp | |
parent | 0cb02b7ee0f72674640ffe5a0fabc1dacc259de0 (diff) |
Add renderTypeQuality property to Text element
For large scale text, the default distance field size gives
artifacts on certain font features. We already have an environment
variable which overrides this on an application level, but this
will cause all distance fields to be rendered at the high resolution,
whereas you may just want it for one particular text field.
Since this becomes an especially important use case now that we can
embed the text fields in a 3D scene, we add a property which can
be used to tweak the base font size used for generating the
distance fields.
[ChangeLog][QtQuick][Text] Added "renderTypeQuality" property, which
can be used in cases of very large fonts, where Qt's font rasterization
may show some rendering artifacts when using the default quality.
Fixes: QTBUG-84696
Change-Id: Ie4205e82cf441562dcc65a8e432a941a3baeddf3
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
Diffstat (limited to 'src/quick/scenegraph/qsgadaptationlayer.cpp')
-rw-r--r-- | src/quick/scenegraph/qsgadaptationlayer.cpp | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/quick/scenegraph/qsgadaptationlayer.cpp b/src/quick/scenegraph/qsgadaptationlayer.cpp index 226c580fb2..9d18868c58 100644 --- a/src/quick/scenegraph/qsgadaptationlayer.cpp +++ b/src/quick/scenegraph/qsgadaptationlayer.cpp @@ -58,8 +58,9 @@ static QElapsedTimer qsg_render_timer; QSGDistanceFieldGlyphCache::Texture QSGDistanceFieldGlyphCache::s_emptyTexture; -QSGDistanceFieldGlyphCache::QSGDistanceFieldGlyphCache(const QRawFont &font) - : m_pendingGlyphs(64) +QSGDistanceFieldGlyphCache::QSGDistanceFieldGlyphCache(const QRawFont &font, int renderTypeQuality) + : m_renderTypeQuality(renderTypeQuality) + , m_pendingGlyphs(64) { Q_ASSERT(font.isValid()); @@ -71,7 +72,7 @@ QSGDistanceFieldGlyphCache::QSGDistanceFieldGlyphCache(const QRawFont &font) m_referenceFont = font; // we set the same pixel size as used by the distance field internally. // this allows us to call pathForGlyph once and reuse the result. - m_referenceFont.setPixelSize(QT_DISTANCEFIELD_BASEFONTSIZE(m_doubleGlyphResolution) * QT_DISTANCEFIELD_SCALE(m_doubleGlyphResolution)); + m_referenceFont.setPixelSize(baseFontSize() * QT_DISTANCEFIELD_SCALE(m_doubleGlyphResolution)); Q_ASSERT(m_referenceFont.isValid()); } @@ -79,6 +80,11 @@ QSGDistanceFieldGlyphCache::~QSGDistanceFieldGlyphCache() { } +int QSGDistanceFieldGlyphCache::baseFontSize() const +{ + return m_renderTypeQuality > 0 ? m_renderTypeQuality : QT_DISTANCEFIELD_BASEFONTSIZE(m_doubleGlyphResolution); +} + QSGDistanceFieldGlyphCache::GlyphData &QSGDistanceFieldGlyphCache::emptyData(glyph_t glyph) { GlyphData gd; |