- Qt 5.5
- Qt Multimedia
- QML Video Shader Effects Example
- EffectGaussianBlur.qml Example File
- Qt 5.5.1 Reference Documentation

# EffectGaussianBlur.qml Example File

video/qmlvideofx/qml/qmlvideofx/EffectGaussianBlur.qml

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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: "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: "gaussianblur_h.fsh"
            source: horizontalShaderSource

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