qt-everywhere-src-5.15.1/qtquick3d/src/imports/effectlib/GaussianBlur.qml

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import QtQuick 2.15
import QtQuick3D 1.15
import QtQuick3D.Effects 1.15

Effect {
    property real amount: 2 // 0 - 10
    Shader {
        id: vertical
        stage: Shader.Vertex
        shader: "shaders/blurvertical.vert"
    }
    Shader {
        id: horizontal
        stage: Shader.Vertex
        shader: "shaders/blurhorizontal.vert"
    }
    Shader {
        id: gaussianblur
        stage: Shader.Fragment
        shader: "shaders/gaussianblur.frag"
    }

    Buffer {
        id: tempBuffer
        name: "tempBuffer"
        format: Buffer.RGBA8
        textureFilterOperation: Buffer.Linear
        textureCoordOperation: Buffer.ClampToEdge
        bufferFlags: Buffer.None // aka frame
    }

    passes: [
        Pass {
            shaders: [ horizontal, gaussianblur ]
            output: tempBuffer
        },
        Pass {
            shaders: [ vertical, gaussianblur ]
            commands: [
                BufferInput {
                    buffer: tempBuffer
                }
            ]
        }
    ]
}