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  1. Qt
  2. QTBUG-24628

Text Rendering produces different results for different PaintDevices ( QPixmap and QImage )

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    • Icon: Bug Bug
    • Resolution: Invalid
    • Icon: P3: Somewhat important P3: Somewhat important
    • None
    • 4.7.0, 5.1.1
    • GUI: Painting
    • None
    • Windows 7 64 bit

      I've attached the results. When using QImage as PaintDevice, no antialiasing or sub pixel rendering is performed.

      Here is the code
      You can just change the commented line to test with the other PaintDevice.

      QApplication app(argc, argv);

QImage img( 128 , 32 , QImage::Format_ARGB32 );
//	QPixmap img( 128 , 32 );
QPainter p( &img );

p.fillRect(0,0,128,32, Qt::white );

QFont font( "Courier New" , 10 );
QPen pen( QColor( 128 , 0 , 0 ) );

p.setPen( pen );
p.setFont( font );

p.drawText(  18 , 18 , "Sample Text");

img.save( "asdf.png" );

        1. qimage.png
          qimage.png
          0.4 kB
        2. qpixmap.png
          qpixmap.png
          0.8 kB
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            sletta Gunnar Sletta
            mserdarsanli Mustafa Serdar Şanlı
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              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes