shader-effect.qml

import QtQuick 2.0

Row {
  Image {
    id: image
    width: 200
    height: 200
    source: "usagi-logo.png"
  }

  ShaderEffect {
    width: 300
    height: 300
    property var source: image
    property real frequency: 20
    property real amplitude: 0.05
    property real time
      NumberAnimation on time {
        from: 0
        to: Math.PI * 2
        duration: 1000
        loops: Animation.Infinite
      }
    fragmentShader:
    "
      varying highp vec2 qt_TexCoord0;
      uniform sampler2D source;
      uniform lowp float qt_Opacity;
      uniform highp float frequency;
      uniform highp float amplitude;
      uniform highp float time;
      void main() {
        highp vec2 p = sin(time + frequency * qt_TexCoord0);
        gl_FragColor = texture2D(source, qt_TexCoord0
          + amplitude * vec2(p.x, -p.y)) * qt_Opacity;
      }
    "
  }
}