diff options
Diffstat (limited to 'src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp')
-rw-r--r-- | src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp | 42 |
1 files changed, 30 insertions, 12 deletions
diff --git a/src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp b/src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp index fc66f2f2cc..a67c659c99 100644 --- a/src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp +++ b/src/quick/scenegraph/qsgdistancefieldglyphnode_p.cpp @@ -38,7 +38,6 @@ ****************************************************************************/ #include "qsgdistancefieldglyphnode_p_p.h" -#include <QtQuick/private/qsgdistancefieldutil_p.h> #include <QtQuick/private/qsgtexture_p.h> #include <QtGui/qopenglfunctions.h> #include <QtGui/qsurface.h> @@ -58,7 +57,7 @@ public: protected: void initialize() override; - void updateAlphaRange(ThresholdFunc thresholdFunc, AntialiasingSpreadFunc spreadFunc); + void updateAlphaRange(); void updateColor(const QVector4D &c); void updateTextureScale(const QVector2D &ts); @@ -98,7 +97,31 @@ QSGDistanceFieldTextMaterialShader::QSGDistanceFieldTextMaterialShader() setShaderSourceFile(QOpenGLShader::Fragment, QStringLiteral(":/qt-project.org/scenegraph/shaders/distancefieldtext.frag")); } -void QSGDistanceFieldTextMaterialShader::updateAlphaRange(ThresholdFunc thresholdFunc, AntialiasingSpreadFunc spreadFunc) +static float qt_sg_envFloat(const char *name, float defaultValue) +{ + if (Q_LIKELY(!qEnvironmentVariableIsSet(name))) + return defaultValue; + bool ok = false; + const float value = qgetenv(name).toFloat(&ok); + return ok ? value : defaultValue; +} + +static float thresholdFunc(float glyphScale) +{ + static const float base = qt_sg_envFloat("QT_DF_BASE", 0.5f); + static const float baseDev = qt_sg_envFloat("QT_DF_BASEDEVIATION", 0.065f); + static const float devScaleMin = qt_sg_envFloat("QT_DF_SCALEFORMAXDEV", 0.15f); + static const float devScaleMax = qt_sg_envFloat("QT_DF_SCALEFORNODEV", 0.3f); + return base - ((qBound(devScaleMin, glyphScale, devScaleMax) - devScaleMin) / (devScaleMax - devScaleMin) * -baseDev + baseDev); +} + +static float spreadFunc(float glyphScale) +{ + static const float range = qt_sg_envFloat("QT_DF_RANGE", 0.06f); + return range / glyphScale; +} + +void QSGDistanceFieldTextMaterialShader::updateAlphaRange() { float combinedScale = m_fontScale * m_matrixScale; float base = thresholdFunc(combinedScale); @@ -169,8 +192,7 @@ void QSGDistanceFieldTextMaterialShader::updateState(const RenderState &state, Q updateRange = true; } if (updateRange) { - updateAlphaRange(material->glyphCache()->manager()->thresholdFunc(), - material->glyphCache()->manager()->antialiasingSpreadFunc()); + updateAlphaRange(); } Q_ASSERT(material->glyphCache()); @@ -334,7 +356,7 @@ public: protected: void initialize() override; - void updateOutlineAlphaRange(ThresholdFunc thresholdFunc, AntialiasingSpreadFunc spreadFunc, int dfRadius); + void updateOutlineAlphaRange(int dfRadius); int m_outlineAlphaMax0_id; int m_outlineAlphaMax1_id; @@ -355,9 +377,7 @@ void DistanceFieldOutlineTextMaterialShader::initialize() m_outlineAlphaMax1_id = program()->uniformLocation("outlineAlphaMax1"); } -void DistanceFieldOutlineTextMaterialShader::updateOutlineAlphaRange(ThresholdFunc thresholdFunc, - AntialiasingSpreadFunc spreadFunc, - int dfRadius) +void DistanceFieldOutlineTextMaterialShader::updateOutlineAlphaRange(int dfRadius) { float combinedScale = m_fontScale * m_matrixScale; float base = thresholdFunc(combinedScale); @@ -381,9 +401,7 @@ void DistanceFieldOutlineTextMaterialShader::updateState(const RenderState &stat if (oldMaterial == 0 || material->fontScale() != oldMaterial->fontScale() || state.isMatrixDirty()) - updateOutlineAlphaRange(material->glyphCache()->manager()->thresholdFunc(), - material->glyphCache()->manager()->antialiasingSpreadFunc(), - material->glyphCache()->distanceFieldRadius()); + updateOutlineAlphaRange(material->glyphCache()->distanceFieldRadius()); } |