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    • SOLVED Render image from hsv color
      General and Desktop • qwidget qpainter rendering python3 drawpixmap • • Adam V  

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      I have found a solution that kind of does the job, although takes three times as much memory. Every update I calculate the difference between the new and the old saturation matrix, this eliminates 60% of the nonzero values, which means it gets drawn that much faster. As a second layer of optimization I call repaint with a rectangle describing the most important zone, and call update every 60ms.
    • UNSOLVED Bug in Qt >= 5.4 when drawing QPixmap onto QOpenGLPaintDevice
      General and Desktop • opengl qpixmap bug drawpixmap glbindtexture • • matejtomcik  

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      @SGaist Hi, I'm running Windows 10, OpenGL 4.5.0