OSG和osgQt编译教程，实测通过 

一、下载OpenSceneGraph

OpenSceneGraphhttps://github.com/openscenegraph/OpenSceneGraph

 二、使用CMAKE编译OpenSceneGraph

1.打开cmake，配置源代码目录

2. CMAKE_INSTALL_PREFIX设置为install文件夹，生成VS工程

3. 使用VS2022打开工程，编译ALL_BUILD和INSTALL，在OpenSceneGraph-master\install目录下生成头文件、lib文件和动态库 

三、下载osgQt

osgQthttps://github.com/openscenegraph/osgQt

四、使用CMAKE编译osgQt

1.修改osgQt-master/CMakeLists.txt，配置OSG和QT依赖（重点，不修改cmake会报错）

找到以下的行，在FIND_PACKAGE(OpenSceneGraph...上面添加一行，set(CMAKE_PREFIX_PATH  "path1;paht2")，注意path1和ath2使用分号分隔，path1为上面的OSG生成目录，即OpenSceneGraph-master/install，path2为QT的安装目录，本案例为Qt/5.15.2/msvc2019_64。版本号3.7.0为OSG的版本号

如下：

PROJECT(osgQt)

set(CMAKE_PREFIX_PATH "C:/Users/115627/Desktop/OpenSceneGraph-master/OpenSceneGraph-master/install;C:/Qt/5.15.2/msvc2019_64")
FIND_PACKAGE(OpenSceneGraph 3.7.0 REQUIRED osgDB osgGA osgUtil osgText osgViewer osgWidget)
SET(OPENSCENEGRAPH_SOVERSION 145)

SET(OSG_PLUGINS osgPlugins-${OPENSCENEGRAPH_VERSION})

SET(OSG_PLUGIN_PREFIX "")

IF (CYGWIN)
    SET(OSG_PLUGIN_PREFIX "cygwin_")
ENDIF()

IF(MINGW)
    SET(OSG_PLUGIN_PREFIX "mingw_")
ENDIF()

2..打开cmake，配置源代码目录

3. CMAKE_INSTALL_PREFIX设置为install文件夹，生成VS工程

4. 使用VS2022打开工程，编译ALL_BUILD和INSTALL，在install目录下生成头文件、lib文件和动态库 

 五、配置环境变量

将OSG和osgQt的动态库加入到系统环境变量，方便后续测试测序找到

六、Qt 测试程序

启动qt creator，新建测试项目，配置头文件路径， lib路径即lib文件，pro配置如下：

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17 opengl

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    main.cpp \
    widget.cpp

HEADERS += \
    widget.h

FORMS += \
    widget.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target


INCLUDEPATH += C:/Users/115627/Desktop/OpenSceneGraph-master/OpenSceneGraph-master/install/include \
                C:/Users/115627/Desktop/OpenSceneGraph-master/osgQt-master/install/include



CONFIG(debug,debug|release){
    LIBS += -LC:\Users\115627\Desktop\OpenSceneGraph-master\OpenSceneGraph-master\install\lib \
    -LC:\Users\115627\Desktop\OpenSceneGraph-master\osgQt-master\install\lib \
    -lOpenThreadsd \
    -losgd \
    -losgDBd \
    -losgGAd \
    -losgUtild \
    -losgViewerd \
    -losgQOpenGLd
}else {
    LIBS += -LC:\Users\115627\Desktop\OpenSceneGraph-master\OpenSceneGraph-master\install\lib \
    -LC:\Users\115627\Desktop\OpenSceneGraph-master\osgQt-master\install\lib \
     -lOpenThreads \
    -losg \
    -losgDB \
    -losgGA \
    -losgUtil \
    -losgViewer \
    -losgQOpenGL
}

 头文件：

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>

#include <osgQOpenGL/osgQOpenGLWidget>

QT_BEGIN_NAMESPACE
namespace Ui {
class Widget;
}
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();

protected slots:
    void initOSG();

private slots:
    void on_pushButton_clicked();

private:
    Ui::Widget *ui;
    osgQOpenGLWidget* osgWidget;
};


#endif // WIDGET_H

CPP文件

#include "widget.h"
#include "ui_widget.h"
#include <osgViewer/Viewer>
#include <osg/Node>
#include <osgDB/ReadFile>
#include <osgGA/TrackballManipulator>
#include <osg/MatrixTransform>
#include <osg/ShapeDrawable>

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);

    osgWidget = new osgQOpenGLWidget(ui->widget);          // 指定osg窗口显示位置
    osgWidget->setGeometry(ui->widget->geometry());        // 指定osg窗口显示大小


    // connect(osgWidget, SIGNAL(initialized()), this, SLOT(initOSG()));
}

Widget::~Widget()
{
    delete ui;
}

void Widget::initOSG()
{
    osgViewer::Viewer* pViewer = osgWidget->getOsgViewer();
    pViewer->setCameraManipulator(new osgGA::TrackballManipulator);

    auto root = new osg::Group;
    auto transform = new osg::MatrixTransform;

    osg::Cylinder* cylinder    = new osg::Cylinder( osg::Vec3( 0.f, 0.f, 0.f ), 1.f, 1.f );
    osg::ShapeDrawable* sd = new osg::ShapeDrawable( cylinder );
    sd->setColor( osg::Vec4( 0.8f, 0.5f, 0.2f, 1.f ) );

    osg::ref_ptr<osg::Geode> geode = new osg::Geode();
    geode->addDrawable(sd);

    pViewer->setSceneData(geode);
}

void Widget::on_pushButton_clicked()
{
    initOSG();
}

运行结果