// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

import QtQuick3D
import QtQuick

Rectangle {
    width: 400
    height: 400
    color: Qt.rgba(0, 0, 0, 1)

    View3D {
        id: v3d
        anchors.fill: parent

        environment: SceneEnvironment {
            clearColor: "#444845"
            backgroundMode: SceneEnvironment.Color
        }

        camera: camera

        InstanceList {
            id: manualInstancing
            instances: [
                InstanceListEntry {
                    position: Qt.vector3d(0, 0, 0)
                    scale: Qt.vector3d(0.5, 0.5, 0.5)
                },
                InstanceListEntry {
                    position: Qt.vector3d(50, 200, 50)
                    scale: Qt.vector3d(0.5, 0.5, 0.5)
                    color: "#7f7f7f"
                }

            ]
        }

        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)
        }

        property real time: 10
        property real amplitude: 20

        // just vertex, just fragment, both

        Node {
            id: rootNode
            Model {
                source: "#Sphere"
                instancing: manualInstancing
                instanceRoot: rootNode
                scale: Qt.vector3d(2, 2, 2)
                x: -200
                materials: [
                CustomMaterial {
                    property alias time: v3d.time
                    property alias amplitude: v3d.amplitude
                    vertexShader: "customsimple.vert"
                }
                ]
            }

            Model {
                source: "#Sphere"
                instancing: manualInstancing
                instanceRoot: rootNode
                scale: Qt.vector3d(2, 2, 2)
                materials: [
                CustomMaterial {
                    fragmentShader: "customsimple.frag"
                }
                ]
            }

            Model {
                source: "#Sphere"
                instancing: manualInstancing
                instanceRoot: rootNode
                scale: Qt.vector3d(2, 2, 2)
                x: 200
                materials: [
                CustomMaterial {
                    property alias time: v3d.time
                    property alias amplitude: v3d.amplitude
                    vertexShader: "customsimple.vert"
                    fragmentShader: "customsimple.frag"
                }
                ]
            }

            // Vertex shaders variant that do not override POSITION value
            Model {
                source: "#Sphere"
                instancing: manualInstancing
                instanceRoot: rootNode
                scale: Qt.vector3d(2, 2, 2)
                x: -200
                y: -200
                materials: [
                CustomMaterial {
                    property alias time: v3d.time
                    property alias amplitude: v3d.amplitude
                    vertexShader: "customsimple_no_position.vert"
                }
                ]
            }

            Model {
                source: "#Sphere"
                instancing: manualInstancing
                instanceRoot: rootNode
                scale: Qt.vector3d(2, 2, 2)
                x: 200
                y: -200
                materials: [
                CustomMaterial {
                    property alias time: v3d.time
                    property alias amplitude: v3d.amplitude
                    vertexShader: "customsimple_no_position.vert"
                    fragmentShader: "customsimple.frag"
                }
                ]
            }
        }
    }
}