1 files changed, 8 insertions, 2 deletions
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index 604c1ab..754b16e 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -6335,10 +6335,16 @@ static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, const
 
     QLineF line(pos.x(), pos.y(), pos.x() + width, pos.y());
 
-    const qreal underlineOffset = fe->underlinePosition().toReal();
+    qreal underlineOffset = fe->underlinePosition().toReal();
+    qreal y = pos.y();
+    // compensate for different rounding rule in Core Graphics paint engine,
+    // ideally code like this should be moved to respective engines.
+    if (painter->paintEngine()->type() == QPaintEngine::CoreGraphics) {
+        y = qCeil(y);
+    }
     // deliberately ceil the offset to avoid the underline coming too close to
     // the text above it.
-    const qreal underlinePos = pos.y() + qCeil(underlineOffset);
+    const qreal underlinePos = y + qCeil(underlineOffset);
 
     if (underlineStyle == QTextCharFormat::SpellCheckUnderline) {
         underlineStyle = QTextCharFormat::UnderlineStyle(QApplication::style()->styleHint(QStyle::SH_SpellCheckUnderlineStyle));