Qt Quick 3D - Custom Materials Example

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 import QtQuick
 import QtQuick3D
 import QtQuick.Controls
 import QtQuick.Layouts

 Window {
     id: window
     width: 1280
     height: 720
     visible: true
     title: "Custom Materials Example"

     MouseArea {
         anchors.fill: parent
         hoverEnabled: screenSphere.visible
         onPositionChanged: {
             screenSphere.x = (mouse.x / window.width * 2.0 - 1.0) * 200
             screenSphere.y = (mouse.y / window.height * 2.0 - 1.0) * -200
         }
     }

     View3D {
         id: v3d
         anchors.fill: parent

         camera: camera

         environment: probeCb.checked ? probeEnv : env

         SceneEnvironment {
             id: env
             clearColor: "#444845"
             backgroundMode: SceneEnvironment.Color
         }

         SceneEnvironment {
             id: probeEnv
             clearColor: "#444845"
             backgroundMode: SceneEnvironment.Color
             probeExposure: 10
             lightProbe: Texture {
                 source: "maps/OpenfootageNET_garage-1024.hdr"
             }
         }

         PerspectiveCamera {
             id: camera
             position: Qt.vector3d(0, 0, 600)
         }

         DirectionalLight {
             position: Qt.vector3d(-500, 500, -100)
             color: Qt.rgba(0.2, 0.2, 0.2, 1.0)
             ambientColor: Qt.rgba(0.1, 0.1, 0.1, 1.0)
             scope: probeCb.checked ? dummy : null
         }

         PointLight {
             position: Qt.vector3d(0, 500, 0)
             color: Qt.rgba(0.1, 1.0, 0.1, 1.0)
             ambientColor: Qt.rgba(0.2, 0.2, 0.2, 1.0)
             brightness: 5
             castsShadow: true
             shadowMapQuality: Light.ShadowMapQualityHigh
             scope: probeCb.checked ? dummy : null
         }

         Node {
             id: dummy
         }

         property url fragShaderSrc: probeCb.checked ? "material_lightprobe.frag" : (builtinSpecularCb.checked ? "material_builtinspecular.frag" : "material.frag")

         Model {
             source: "#Rectangle"
             y: -200
             scale: Qt.vector3d(5, 5, 5)
             eulerRotation.x: -90
             materials: [
                 CustomMaterial {
                     shadingMode: CustomMaterial.Shaded
                     vertexShader: "material.vert"
                     fragmentShader: v3d.fragShaderSrc
                     property real uTime: 0.0
                     property real uAmplitude: 0.0
                     property color uDiffuse: "white"
                     property real uShininess: 50
                 }
             ]
         }

         WeirdShape {
             customMaterial: CustomMaterial {
                 shadingMode: CustomMaterial.Shaded
                 vertexShader: "material.vert"
                 fragmentShader: v3d.fragShaderSrc
                 property real uTime: 0.0
                 property real uAmplitude: 0.0
                 property color uDiffuse: "purple"
                 property real uShininess: 50
             }
             position: Qt.vector3d(150, 150, -100)
         }

         Model {
             position: Qt.vector3d(-100, 0, -50)
             eulerRotation.x: 30
             NumberAnimation on eulerRotation.y {
                 from: 0; to: 360; duration: 5000; loops: -1
             }
             scale: Qt.vector3d(1.5, 1.5, 1.5)
             source: "#Cylinder"
             materials: [
                 CustomMaterial {
                     shadingMode: CustomMaterial.Shaded
                     vertexShader: "material.vert"
                     fragmentShader: v3d.fragShaderSrc
                     property real uTime: 0.0
                     property real uAmplitude: 0.0
                     property color uDiffuse: "yellow"
                     property real uShininess: 50
                     SequentialAnimation on uAmplitude {
                         loops: -1
                         NumberAnimation { from: 0.0; to: 200.0; duration: 5000 }
                         NumberAnimation { from: 200.0; to: 0.0; duration: 5000 }
                     }
                 }
             ]
         }

         Model {
             id: screenSphere
             source: "#Sphere"
             visible: screenTexCb.checked
             scale: Qt.vector3d(4, 4, 4)
             z: 100
             materials: [
                 CustomMaterial {
                     shadingMode: CustomMaterial.Shaded
                     sourceBlend: uKeepAlpha ? CustomMaterial.SrcAlpha : CustomMaterial.NoBlend
                     destinationBlend: uKeepAlpha ? CustomMaterial.OneMinusSrcAlpha : CustomMaterial.NoBlend
                     fragmentShader: "screen.frag"
                     property bool uKeepAlpha: screenTexAlphaCb.checked
                 }
             ]
         }
     }

     Rectangle {
         color: "lightGray"
         width: controls.implicitWidth
         height: controls.implicitHeight
         ColumnLayout {
             id: controls
             RadioButton {
                 checked: true
                 text: "Lights, custom diffuse and specular"
             }
             RadioButton {
                 id: builtinSpecularCb
                 checked: false
                 text: "Light, custom diffuse, built-in specular"
             }
             RadioButton {
                 id: probeCb
                 checked: false
                 text: "Light probe, metalness (disables directional/point lights)"
                 onCheckedChanged: if (checked) screenTexCb.checked = false
             }
             RowLayout {
                 CheckBox {
                     id: screenTexCb
                     enabled: !probeCb.checked
                     checked: false
                     text: "Emboss Sphere"
                 }
                 CheckBox {
                     id: screenTexAlphaCb
                     checked: false
                     text: "Keep alpha"
                 }
             }
         }
     }
 }