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

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import QtQuick 2.15
import QtQuick3D 1.15
import QtQuick3D.Effects 1.15

Effect {
    property real vignetteStrength: 15 // 0 - 15
    property vector3d vignetteColor: Qt.vector3d(0.5, 0.5, 0.5)
    property real vignetteRadius: 0.35 // 0 - 5

    Shader {
        id: vignette
        stage: Shader.Fragment
        shader: "shaders/vignette.frag"
    }

    passes: [
        Pass {
            shaders: vignette
        }
    ]
}