qml中怎么使用egl配置，并使用opengles画一个矩形，给出完整代码

以下是使用 QML 和 OpenGL ES 画一个矩形的完整代码：

import QtQuick 2.0
import QtQuick.Window 2.0
import QtQuick.Controls 2.0
import QtQuick.Scene3D 2.0
import QtQuick.Shapes 1.0
import QtQuick.Particles 2.0
import QtQuick.Particles.Emitter 2.0
import QtQuick.Particles.ParticleSystem 2.0

Window {
    visible: true
    width: 640
    height: 480
    title: "OpenGL ES Rectangle"

    Scene3D {
        anchors.fill: parent

        // Configure the OpenGL context
        OpenGLConfiguration {
            // Set the surface format to use EGL
            surfaceFormat: OpenGLSurfaceFormat {
                redBufferSize: 8
                greenBufferSize: 8
                blueBufferSize: 8
                alphaBufferSize: 8
                depthBufferSize: 24
                stencilBufferSize: 8
                samples: 4
                profile: OpenGLProfile {
                    api: OpenGLProfile.Core
                    majorVersion: 3
                    minorVersion: 0
                }
                swapInterval: 1
                swapBehavior: OpenGLSurfaceFormat.DoubleBuffer
                renderableType: OpenGLSurfaceFormat.OpenGL_ES
            }
        }

        Camera {
            id: camera
            position: Qt.vector3d(0.0, 0.0, 10.0)
            viewCenter: Qt.vector3d(0.0, 0.0, 0.0)
        }

        Entity {
            id: root

            // Create the rectangle geometry
            RectangleMesh {
                id: rectangleMesh
                width: 2.0
                height: 1.0
            }

            // Create the material for the rectangle
            Material {
                id: material
                shader: ShaderEffect {
                    vertexShaderCode: "\
                        attribute highp vec4 vertexCoord;\
                        uniform highp mat4 modelViewProjectionMatrix;\
                        void main() {\
                            gl_Position = modelViewProjectionMatrix * vertexCoord;\
                        }"
                    fragmentShaderCode: "\
                        uniform lowp vec4 color;\
                        void main() {\
                            gl_FragColor = color;\
                        }"
                    property var color: Qt.rgba(1.0, 1.0, 1.0, 1.0)
                }
            }

            // Create the entity for the rectangle
            Entity {
                id: rectangleEntity
                components: [
                    rectangleMesh,
                    material
                ]
            }

            // Rotate the rectangle
            Rotate {
                id: rectangleRotation
                axis: Qt.vector3d(0.0, 1.0, 0.0)
                angle: 0.0
                origin: Qt.vector3d(0.0, 0.0, 0.0)
            }

            // Animate the rotation of the rectangle
            NumberAnimation {
                id: rectangleRotationAnimation
                target: rectangleRotation
                property: "angle"
                from: 0.0
                to: 360.0
                duration: 2000
                loops: Animation.Infinite
                running: true
            }

            // Add the rectangle entity to the root entity
            components: [
                camera,
                rectangleRotation,
                rectangleEntity
            ]
        }
    }
}

这里我们使用了 `OpenGLConfiguration` 组件来配置 OpenGL 上下文，将其设置为使用 EGL，同时使用 OpenGL ES 画一个矩形。这个矩形由 `RectangleMesh` 组件创建，使用 `Material` 组件来定义其外观。我们还添加了一个 `Rotate` 组件和一个 `NumberAnimation` 组件来使矩形旋转。