EffectGaussianBlur.qml Example File

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 // Based on http://www.geeks3d.com/20100909/shader-library-gaussian-blur-post-processing-filter-in-glsl/

 import QtQuick 2.0

 Item {
     id: root
     property bool divider: true
     property real dividerValue: 0.5
     property ListModel parameters: ListModel {
         ListElement {
             name: "radius"
             value: 0.5
         }
     }

     property alias targetWidth: verticalShader.targetWidth
     property alias targetHeight: verticalShader.targetHeight
     property alias source: verticalShader.source

     Effect {
         id: verticalShader
         anchors.fill:  parent
         dividerValue: parent.dividerValue
         property real blurSize: 4.0 * parent.parameters.get(0).value / targetHeight
         fragmentShaderFilename: "shaders/gaussianblur_v.fsh"
     }

     Effect {
         id: horizontalShader
         anchors.fill: parent
         dividerValue: parent.dividerValue
         property real blurSize: 4.0 * parent.parameters.get(0).value / parent.targetWidth
         fragmentShaderFilename: "shaders/gaussianblur_h.fsh"
         source: horizontalShaderSource

         ShaderEffectSource {
             id: horizontalShaderSource
             sourceItem: verticalShader
             smooth: true
             hideSource: true
         }
     }
 }