main.qml Example File

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  ** This file is part of the examples of the Qt Toolkit.
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  import QtQuick 2.0

  import SceneGraphRendering 1.0

  Item {
      width: 400
      height: 400

      // The checkers background
      ShaderEffect {
          id: tileBackground
          anchors.fill: parent

          property real tileSize: 16
          property color color1: Qt.rgba(0.9, 0.9, 0.9, 1);
          property color color2: Qt.rgba(0.85, 0.85, 0.85, 1);

          property size pixelSize: Qt.size(width / tileSize, height / tileSize);

          fragmentShader:
              "
              uniform lowp vec4 color1;
              uniform lowp vec4 color2;
              uniform highp vec2 pixelSize;
              varying highp vec2 qt_TexCoord0;
              void main() {
                  highp vec2 tc = sign(sin(3.14152 * qt_TexCoord0 * pixelSize));
                  if (tc.x != tc.y)
                      gl_FragColor = color1;
                  else
                      gl_FragColor = color2;
              }
              "
      }

      Renderer {
          id: renderer
          anchors.fill: parent
          anchors.margins: 10

          // The transform is just to show something interesting..
          transform: [
              Rotation { id: rotation; axis.x: 0; axis.z: 0; axis.y: 1; angle: 0; origin.x: renderer.width / 2; origin.y: renderer.height / 2; },
              Translate { id: txOut; x: -renderer.width / 2; y: -renderer.height / 2 },
              Scale { id: scale; },
              Translate { id: txIn; x: renderer.width / 2; y: renderer.height / 2 }
          ]
      }

      // Just to show something interesting
      SequentialAnimation {
          PauseAnimation { duration: 5000 }
          ParallelAnimation {
              NumberAnimation { target: scale; property: "xScale"; to: 0.6; duration: 1000; easing.type: Easing.InOutBack }
              NumberAnimation { target: scale; property: "yScale"; to: 0.6; duration: 1000; easing.type: Easing.InOutBack }
          }
          NumberAnimation { target: rotation; property: "angle"; to: 80; duration: 1000; easing.type: Easing.InOutCubic }
          NumberAnimation { target: rotation; property: "angle"; to: -80; duration: 1000; easing.type: Easing.InOutCubic }
          NumberAnimation { target: rotation; property: "angle"; to: 0; duration: 1000; easing.type: Easing.InOutCubic }
          NumberAnimation { target: renderer; property: "opacity"; to: 0.5; duration: 1000; easing.type: Easing.InOutCubic }
          PauseAnimation { duration: 1000 }
          NumberAnimation { target: renderer; property: "opacity"; to: 0.8; duration: 1000; easing.type: Easing.InOutCubic }
          ParallelAnimation {
              NumberAnimation { target: scale; property: "xScale"; to: 1; duration: 1000; easing.type: Easing.InOutBack }
              NumberAnimation { target: scale; property: "yScale"; to: 1; duration: 1000; easing.type: Easing.InOutBack }
          }
          running: true
          loops: Animation.Infinite
      }

      Rectangle {
          id: labelFrame
          anchors.margins: -10
          radius: 5
          color: "white"
          border.color: "black"
          opacity: 0.8
          anchors.fill: label
      }

      Text {
          id: label
          anchors.bottom: renderer.bottom
          anchors.left: renderer.left
          anchors.right: renderer.right
          anchors.margins: 20
          wrapMode: Text.WordWrap
          text: "The blue rectangle with the vintage 'Q' is an FBO, rendered by the application on the scene graph rendering thread. The FBO is managed and displayed using the QQuickFramebufferObject convenience class."
      }

  }